DESC:FIELD
The present disclosure relates to a field of cable seals.
DEFINITIONS
Locked configuration of the cable seal: In the locked configuration, the cable seal is fully engaged and secured. The cable is completely inserted through the cable seal housing and the internal locking chamber, passing through the locking assembly. This engagement prevents any unauthorized retraction of the cable, ensuring the seal remains intact.
Unlocked configuration of the cable seal: The unlocked configuration describes a state where the cable seal is not fully engaged and secured. This can occur either when the cable is not inserted into the housing or when it has been removed or compromised. In this state, the locking mechanism is disengaged, allowing the cable to be freely inserted or removed without significant resistance.
BACKGROUND
The background information herein below relates to the present disclosure but is not necessarily prior art.
Cable seals are commonly used to secure cargo, containers, and other assets by preventing unauthorized access. Traditional cable seals typically include a locking mechanism that allows the cable to pass through in one direction while restricting retraction. However, conventional cable seals are vulnerable to various tampering techniques, including shim insertion to disengage the locking mechanism, twisting of the cable to manipulate the locking mechanism, and cutting the cable near the lock to reinsert an unused section, making the seal appear intact. In electronic versions, tamperers may also attempt to bypass detection by establishing an external circuit connection to mimic an unbroken state.
The first method of tampering involves directly manipulating the internal locking mechanism of the cable seal by inserting a shim to disengage the locking wheel. Some conventional cable seal configurations use friction-based locking elements that engage with the cable to prevent its withdrawal. However, a shim or a thin pin may be inserted through small gaps or access points in the housing to disengage the locking mechanism. As a result, the cable can be removed without cutting the seal, allowing unauthorized access to the secured contents. This method is particularly problematic because it does not leave obvious physical signs of tampering, making it difficult to detect.
Another method of tampering involves rotational manipulation, wherein the cable is twisted along its longitudinal axis to manipulate the locking mechanism. This reduces the effective diameter of the cable and alters its mechanical engagement with the locking mechanism. This causes the internal gripping elements to momentarily disengage, allowing the cable to be withdrawn. This method is especially concerning as it does not require any specialized tools and can be performed discreetly in a short period. Furthermore, after tampering, the cable may return to its original state, leaving little to no visible evidence of a security breach.
Furthermore, a particularly sneakier form of tampering is by taking advantage of excess cable length after sealing. When a cable seal is applied, it is common for users to leave extra cable extending beyond the locked position. This configuration flaw can be exploited in the following manner: first, the cable is cut at a hidden location, selecting a point along the looped cable that is not immediately visible, such as near the secured object. Once severed, the loop can be opened, allowing unauthorized access. After accessing the secured contents, the cut-cable is trimmed or re-inserted into the locking mechanism, effectively re-securing the seal. If excess cable length was initially left available, the re-insertion compensates for the removed portion, making the seal appear unchanged.
This technique is particularly dangerous because the tampered cable seal remains visually intact. Security personnel may inspect the seal and, seeing no apparent damage, mistakenly believe it is still providing effective protection. This method can be employed to breach security in cargo shipments, supply chain operations, and tamper-evident packaging in critical industries. The lack of effective tamper indicators in conventional seals means that unauthorized access may go unnoticed until it is too late.
These tampering vulnerabilities undermine the fundamental purpose of cable seals preventing unauthorized access while providing clear evidence of any breach. The consequences of these security flaws are particularly severe in applications such as international cargo shipments, where customs officials rely on seals to ensure goods have not been accessed during transit, and in banking and cash handling, where secure transport of money bags and ATM cassettes is essential. Similar concerns arise in pharmaceutical and medical supply chains, where contamination or theft could have serious consequences, and in critical infrastructure security, where unauthorized access to restricted areas or equipment must be strictly controlled.
There is, therefore, felt a need of a cable seal, that alleviates the above-mentioned drawbacks.
OBJECTS
Some of the objects of the present disclosure, which at least one embodiment herein satisfies, are as follows:
It is an object of the present disclosure to ameliorate one or more problems of the prior art or to at least provide a useful alternative.
An object of the present disclosure is to provide a cable seal with a double locking mechanism.
Another object of the present disclosure is to provide a cable seal that discourages theft attempt by incorporating enhanced security mechanisms resistant to conventional tampering techniques.
Yet another object of the present disclosure is to provide a cable seal that provides a clear and immediate indication of any tampering attempt.
Still another object of the present disclosure is to provide a cable seal that is less prone to damage during a theft attempt.
Yet another object of the present disclosure is to provide a cable seal that offers increased security against theft attempts by preventing unauthorized release through cable twisting, pin insertion, or re-sealing with excess cable length.
Still another object of the present disclosure is to provide a lock cable seal with reinforced housing that prevents direct access to internal locking components.
Yet another object of the present disclosure is to provide a cable seal that ensures one-way engagement of the cable, preventing retraction in the opposite direction.
Still another object of the present disclosure is to provide a cable seal ensuring that external tools cannot be used to manipulate internal locking components.
Yet another object of the present disclosure is to provide a cable seal that prevents rotational manipulation of the cable.
Still another object of the present disclosure is to provide a cable seal that continuously monitors the electrical continuity of the cable and generates an immediate tamper alert upon severing or unauthorized removal.
Yet another object of the present disclosure is to provide a cable seal that allows real-time tracking, status updates, and permanent logging of tamper events.
Other objects and advantages of the present disclosure will be more apparent from the following description, which is not intended to limit the scope of the present disclosure.
SUMMARY
The present disclosure envisages a cable seal. The cable seal comprises a housing, a cable, a first locking assembly, and a second locking assembly. The housing defines an internal locking chamber with a channel extending therethrough. The cable extending through the housing. The first locking assembly configured in the locking chamber. The first locking assembly comprises a first sloped guideway, a first locking wheel, and a first biasing means. The first sloped guideway has an increasing slope in the direction of the cable insertion. The first locking wheel is configured to be movably disposed in the first sloped guideway, and is further configured to receive and engage the cable. The first biasing means urging the first locking wheel toward the cable to facilitate movement in the direction of cable insertion and restrict movement in a retraction direction.
The second locking assembly is configured in the locking chamber. The second locking assembly comprises a second sloped guideway, a second locking wheel, and a second biasing means. The second sloped guideway has an increasing slope in an operative direction. The second locking wheel is configured to be movably disposed in the second sloped guideway in the path of the cable. The second locking wheel is configured to receive and engage the cable at a position distinct from the first locking wheel. The second biasing means urges the second locking wheel toward the cable to facilitate movement in the insertion direction and restrict movement in the retraction direction.
The first locking assembly and the second locking assembly operate in a mirrored configuration, such that any attempt to disengage any one of the locking wheels is counteracted by the engagement force of the respective opposing locking wheel to prevent simultaneous disengagement of both of the wheels from the cable.
In an embodiment, each of the first and second locking wheels is configured with a serrated or textured outer surface, to grip and prevent slippage of the cable.
In an embodiment, each of the first and second locking wheels is configured to be rotatably mounted within the respective sloped guideway to allow the locking wheels to rotate when the cable is inserted and wedge against the cable when an attempt is made to retract the cable.
In an embodiment, the sloped guideways are integrally formed within the locking chamber of the housing to provide an engagement path for the locking wheels.
In an embodiment, each of the sloped guideways is inclined in the direction of insertion of cable to allow the locking wheels to move in a same direction when the cable is pushed in while remaining under the restoring force of the biasing means.
In an embodiment, the locking wheels move opposite along the sloped guideways when the cable is pulled in a retraction direction, thereby reducing the clearance between the wheels and the wall of the locking channel, to facilitate increase in frictional engagement, and sequentially double locking the cable in place to prevent unauthorized removal.
In an embodiment, the sloped guideways are angled between 2.5° and 30° relative to the plane of the locking chamber.
In an embodiment, the channel has a first opening configured to receive the cable and a second opening configured for the exit of the cable. The channel is configured to guide the cable into engagement with the locking assembly while preventing misalignment during insertion.
In an embodiment, a closure cap, configured at the cable exit and further configured to extend at least partially to accommodate at least an extended portion of the cable in the locked configuration.
In an embodiment, the first and second locking wheels are disposed on different planes within the locking chamber, such that the second locking wheel engages the cable at a position downstream of the first locking wheel, to provide double locking of the cable.
Further, the present disclosure envisages a cable seal with electronic tamper detection. The cable seal is configured to secure a cable and detect unauthorized removal, the cable seal comprises a housing, a cable, at least one locking assembly, and a tamper detection module. The housing defines an internal locking chamber with a channel extending therethrough. The cable extends through the housing. The locking assembly is configured in the locking chamber. The locking assembly comprises at least one locking wheel and at least one biasing means. The locking wheel is configured to engage the cable and restrict its movement in a retraction direction. The biasing means urging the locking wheel toward the cable to maintain engagement.
The tamper detection module comprises a first conductive terminal, a second conductive terminal, and a tamper monitoring unit. The first conductive terminal is disposed in the locking chamber and is configured to establish electrical contact with a first end of the cable. The second conductive terminal is disposed in the locking chamber and is configured to establish electrical contact with a second end of the cable, wherein insertion of the cable completes an electrical circuit. The tamper monitoring unit is electrically connected to the first and second conductive terminals. The tamper monitoring unit is configured to detect a disruption in electrical continuity upon unauthorized removal or severing of the cable and generate a corresponding tamper indication. The locking assembly and the tamper detection module operate in conjunction, such that the removal of the cable is physically restricted by the locking assembly and any severing or unauthorized disengagement or removal of the cable results in an immediate disruption in electrical continuity, causing the tamper monitoring unit to detect the disruption and generate a corresponding tamper indication.
In an embodiment, the locking assembly includes a first locking assembly and a second locking assembly, the second locking assembly is configured in a mirrored configuration relative to the first locking assembly, such that any attempt to disengage one of the locking assemblies is counteracted by the engagement force of the respective opposing locking assembly, to prevent simultaneous disengagement of both locking assemblies from the cable.
In an embodiment, the first locking assembly includes a first sloped guideway, a first locking wheel, and a first biasing means. The first sloped guideway has an increasing slope in the direction of the cable insertion. The first locking wheel is movably disposed within the first sloped guideway. The first locking wheel is configured to receive and engage the cable upon insertion. The first biasing means urging the first locking wheel toward the cable, wherein the first locking wheel moves along the first sloped guideway during cable insertion and moves opposite during cable retraction, for reducing clearance and increasing engagement force against the cable.
In an embodiment, the second locking assembly includes a second sloped guideway, a second locking wheel, and a second biasing means. The second sloped guideway has an increasing slope in the direction of the cable insertion. The second locking wheel movably disposed within the second sloped guideway. The second locking wheel is configured to receive and engage the cable at a position distinct from the first locking wheel. The second biasing means urging the second locking wheel toward the cable. The second locking wheel moves along the second sloped guideway during cable insertion and moves opposite during the cable retraction, for reducing clearance and increasing engagement force against the cable.
In an embodiment, the first and second locking wheels are disposed on different planes within the locking chamber, such that the second locking wheel engages the cable at a position downstream of the first locking wheel, to provide sequential double locking of the cable.
In an embodiment, the first and second locking wheels are rotatably mounted within the locking chamber, such that the wheels rotate in the insertion direction of the cable and wedge against the cable during retraction to restrict the movement of the cable.
In an embodiment, the tamper detection module includes a non-resettable memory unit, the memory unit is configured to store a tamper status upon detection of unauthorized cable removal or severing.
In an embodiment, the tamper detection module includes a timestamping unit, the timestamping unit is configured to record the exact time of cable severing or unauthorized removal.
In an embodiment, a visual tamper indicator, being configured to be in communication with the tamper detection module to provide a visible mark or change in colour upon detection of unauthorized access or disengagement of the cable.
In an embodiment, the tamper monitoring unit is configured to transfer the tamper indication to a RFID upon detection of unauthorized access or disengagement of the cable.
In an embodiment, the RFID further includes an integrated antenna, the antenna configured to wirelessly communicate the tamper status upon interrogation.
In an embodiment, the tamper detection module includes a wireless communication module, the wireless communication module is selected from Bluetooth Low Energy, Near-Field Communication, RFID, or GSM transceiver, and is configured to transmit tamper status data upon interrogation.
In an embodiment, the wireless communication module is integrated with a battery-powered microcontroller, the microcontroller enabling real-time tamper alerts via GSM, IoT-based platforms, or remote monitoring systems.
In an embodiment, the locking chamber is constructed from an electrically insulating material, the material being selected from a polymeric composite, high-strength polycarbonate, or a ceramic-based dielectric, the material prevents unintended electrical connections or short circuits between the conductive terminals and other internal components.
In an embodiment, the locking chamber having an internal partition structure, the partition structure includes a first compartment, a second compartment, a third compartment and a fourth compartment. The first compartment is configured to enclose the locking assembly. The first compartment is configured to prevent physical interference between the locking components and the conductive terminals. The second compartment is configured to enclose the tamper detection module. The second compartment is configured to be electromagnetically shielded to mitigate electromagnetic interference. The third compartment is configured to enclose the first lock assembly. The fourth compartment is configured to enclose the second lock assembly. The insulating barrier is disposed between the second compartment and the fourth compartment. The insulating barrier is configured to electrically isolate the conductive terminals from the locking components to ensure controlled electrical contact with the cable.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
A cable seal of the present disclosure will now be described with the help of the accompanying drawings, in which:
Figure 1A illustrates an isometric view of a cable seal in unlocked configuration in accordance with the present disclosure;
Figure 1B illustrates an isometric view of the cable seal in locked configuration of Figure 1A;
Figure 1C illustrates a front view of the cable seal in unlocked configuration of Figure 1A;
Figure 1D illustrates a front view of the cable seal in locked configuration of Figure 1A;
Figure 2 illustrates a sectional view of a housing Figure 1A;
Figure 3A illustrates a sectional view of the cable seal in unlocked configuration of Figure 1A;
Figure 3B illustrates an enlarged view of a first locking assembly of Figure 3A;
Figure 3C illustrates an enlarged view of a second locking assembly of Figure 3A;
Figure 4 illustrates a sectional view of the cable seal in locked configuration of Figure 3A;
Figure 5 illustrates a sectional view of the cable seal with a tamper detection module in unlocked configuration in accordance with an embodiment of the present disclosure;
Figure 6A illustrates a sectional view of the cable seal with the tamper detection module in locked configuration of Figure 5; and
Figure 6B illustrates an enlarged view of the tamper detection module of Figure 6A.
LIST OF REFERENCE NUMERALS
1000 - Cable seal
2000 - Cable seal (with tamper detection module)
205 - Housing
210 - Channel/Chamber wall
215 - Cable
220 - First compartment
225 - Second compartment
230 - Insulating barrier
235 - Closure cap
240 - Third compartment
245 - Fourth compartment
300 - First locking assembly
305 - First sloped guideway
310 - First locking wheel
315 - First biasing means
400 - Second locking assembly
405 - Second sloped guideway
410 - Second locking wheel
415 - Second biasing means
500 - Tamper detection module
505 - First conductive terminal
510 - Second conductive terminal
515 - Tamper monitoring unit/RFID tag
520 - Integrated antenna
DETAILED DESCRIPTION
The present disclosure relates to a field of cable seals.
Embodiments are provided so as to thoroughly and fully convey the scope of the present disclosure to the person skilled in the art. Numerous details are set forth, relating to specific components, and methods, to provide a complete understanding of embodiments of the present disclosure. It will be apparent to the person skilled in the art that the details provided in the embodiments should not be construed to limit the scope of the present disclosure. In some embodiments, well-known processes, well-known apparatus structures, and well-known techniques are not described in detail.
The terminology used, in the present disclosure, is only for the purpose of explaining a particular embodiment and such terminology shall not be considered to limit the scope of the present disclosure. As used in the present disclosure, the forms "a,” "an," and "the" may be intended to include the plural forms as well, unless the context clearly suggests otherwise. The terms "comprises," "comprising," “including,” and “having,” are open ended transitional phrases and therefore specify the presence of stated features, integers, steps, operations, elements, modules, units and/or components, but do not forbid the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The particular order of steps disclosed in the method and process of the present disclosure is not to be construed as necessarily requiring their performance as described or illustrated. It is also to be understood that additional or alternative steps may be employed.
When an element is referred to as being "mounted on", “engaged to”, “connected to”, or “coupled to” another element, it may be directly on, engaged, connected or coupled to the other element. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed elements.
The terms first, second, third, etc., should not be construed to limit the scope of the present disclosure as the aforementioned terms may be only used to distinguish one element, component, region, layer or section from another component, region, layer or section. Terms such as first, second, third, etc., when used herein do not imply a specific sequence or order unless clearly suggested by the present disclosure.
Terms such as “inner,” “outer,” "beneath," "below," "lower," "above," "upper," and the like, may be used in the present disclosure to describe relationships between different elements as depicted from the figures.
Embodiments, of the present disclosure, will now be described with reference to the accompanying drawing.
A cable seal (1000, 2000) of the present disclosure will now be described in detail with reference to Figure 1A through Figure 6B. The present disclosure relates to a cable seal (1000) configured to provide enhanced security for various applications, including logistics, transportation, and asset protection. The cable seal (1000, 2000) is configured to prevent unauthorized access and tampering by incorporating a robust locking mechanism.
Referring to Figures 2-4, the cable seal (1000) comprises a housing (205), a cable (215), and a first locking assembly (300) and a second locking assembly (400). The housing (205) defines an internal locking chamber with a channel (210) extending therethrough. The internal locking chamber is further divided into a first compartment (220), a second compartment (225), a third compartment (240), and a fourth compartment (245). The channel (210) includes a first opening configured to receive the cable (215) and a second opening for the cable (215) exit after passing through the channel (210). The channel (210) extends from the first opening through the third compartment (240) and continues to the second opening, traversing between the fourth compartment (245) and the second compartment (225) extending across the length of the housing (205).
In an embodiment, at least a portion of the channel (210) is provided with a non-conductive sleeve (not shown in the figures).
The cable (215) is configured to be securely received within first compartment (220) such that one end of the cable (215) is securely anchored within a groove (not shown) configured in the first compartment (220) and other end of the cable (215) is configured to be received within the first opening of the channel (210) as shown in Figure 3A and 4. A second opening is configured for the exit of the cable. The channel is configured to guide the cable into engagement with the locking assembly while preventing misalignment during insertion.
In an embodiment, the cable seal (1000) includes a closure cap (235), configured at the cable exit and further configured to extend at least partially to accommodate at least an extended portion of the cable (215) in the locked configuration. Thus, the closure cap (235) enhances tamper resistance by ensuring that any attempt to manipulate or remove the cable requires direct interaction with the cap (235) itself, making unauthorized access immediately detectable. Since the cap (235) partially encloses the extended portion of the cable, any tampering attempt would result in visible damage, thereby serving as a clear tamper-evident feature. Additionally, the closure cap protects the exposed cable end. This combination of tamper indication and physical protection strengthens the overall security and reliability of the cable seal.
Further, the first locking assembly (300) is configured to be disposed of within the third compartment (240) of the locking chamber in communication with the channel (210). The first locking assembly (300) comprises a first sloped guideway (305), a first locking wheel (310), and a first biasing means (315).
The first sloped guideway (305), defining a cavity within the first locking assembly (300), has an increasing slope in the direction of the insertion of the cable as shown in Figure 3B. The increasing slope in the allows the first locking wheel (310) to move in the same direction of the insertion of the cable (215).
In an embodiment, the first sloped guideway (305) is integrally formed within the third compartment (240) of the locking chamber of the housing (205) to provide an engagement path for the locking wheels (310).
The first locking wheel (310) is movably disposed within the cavity of the first sloped guideway (305) and is configured to receive and engage the cable (215) Figure 3B and Figure 4.
The first biasing means (315) is configured to be movably disposed in the cavity of the first sloped guideway (305) urging the first locking wheel (310) toward the cable (215). The first biasing means (315) is configured to facilitate movement in an insertion direction and restrict movement in a retraction direction as shown in Figure 3B.
In an embodiment, the first locking wheel (310) is configured to be rotatably mounted within the cavity of the first sloped guideway (305) to allow the first locking wheel (310) to rotate when the cable (215) is inserted and wedge against the cable (215) when an attempt is made to retract the cable (215).
Further, the second locking assembly (400) is configured to be disposed of in the fourth compartment (245) of the locking chamber in communication with the channel (210) as shown in Figure 3A and Figure 4. The second locking assembly (400) comprises a second sloped guideway (405), a second locking wheel (410), and a second biasing means (415). The second sloped guideway (405), defining a cavity within the second locking assembly (400), has an increasing slope in the direction of the cable insertion. The increasing slope allows the second locking wheel (410) to move in the direction of the cable when the cable (215) is inserted.
In an embodiment, the second sloped guideway (405) is integrally formed within the third compartment (240) of the locking chamber of the housing (205) to provide an engagement path for the second locking wheels (410).
The second locking wheel (410) is configured to be movably disposed of in the cavity of the second sloped guideway (405) in the path of the cable (215). The second locking wheel (410) is configured to receive and engage the cable (215) at a position distinct from the first locking wheel (310).
The second biasing means (415) is configured to be movably disposed in the cavity of the second sloped guideway (405) urging the second locking wheel (410) toward the cable (215). The second biasing means (415) is configured to facilitate movement in the insertion direction and restrict movement in the retraction direction.
In an embodiment, the second locking wheel (410) is configured to be rotatably mounted within the cavity of the second sloped guideway (405) to allow the second locking wheel (410) to rotate when the cable (215) is inserted and wedge against the cable (215) when an attempt is made to retract the cable (215).
Both locking assembly or the locking wheels (310, 410) operate in a mirrored locking configuration, such that any attempt to disengage one of the locking wheels or the locking assembly (310, 410) is counteracted by the engagement force of the opposing locking wheel (310, 410) or the opposing locking assembly. When the cable (215) is pulled in the retraction direction, the locking wheels (310, 410) move along the respective sloped guideways (305, 405), thereby reducing clearance between the locking wheels (310, 410) and the walls of the channel (210). This mechanism increases frictional engagement, thereby sequentially double locking the cable (215) in place to prevent unauthorized removal.
In an embodiment, each of the locking wheels (310, 410) is provided with a serrated or textured outer surface to enhance grip and prevent slippage.
In an embodiment, each of the sloped guideways (305, 405) is inclined in the direction of insertion of the cable (215) to allow the locking wheels (310, 410) to move in the same direction (direction of insertion of the cable (215)) when the cable (215) is pushed in while remaining under the restoring force of the biasing means (315, 415).
In an embodiment, the sloped guideways (305, 405) are angled between 2.5° and 30° relative to the plane of the locking chamber.
In an embodiment, the locking wheels (310, 410) move along the sloped guideways (305, 405) when the cable (215) is pulled in a retraction direction. This movement reduces the clearance between the wheels (310, 410) and the wall of the channel (210), to facilitate increase in frictional engagement, thereby sequentially double locking the cable (215) in place to prevent unauthorized removal.
In an embodiment, the first and second locking wheels (310, 410) are disposed on different planes within the locking chamber, such that the second locking wheel (410) engages the cable (215) at a position downstream of the first locking wheel (310), to provide double locking of the cable (215).
In a preferred embodiment, the position of the second locking assembly (400) is lower than the first locking assembly (300) as shown in Figures 3A and 4.
In another embodiment, the second locking assembly (400) is positioned at an angle of inclination with respect to the second locking assembly (400).
In an embodiment, the housing (205) has a length ranging between 55 mm to 65 mm and a thickness ranging between 11 mm to 13 mm.
In an embodiment, the channel (210) has a diameter ranging between 3 mm to 6 mm.
In an embodiment, the both the wheels (310, 410) has a diameter ranging between 5 mm to 6 mm.
In an embodiment, the housing (205) is made of a metal. In another embodiment, the housing (205) is made of a non-metallic material such as plastic, fiber or the likes.
Further, the present disclosure envisages the cable seal (2000) with an electronic tamper detection module (500). Figure 5 illustrates the sectional view of the cable seal (2000) with electronic tamper detection module (500) in unlocked configuration in accordance with an embodiment of the present disclosure; and Figure 6A illustrates the sectional view of the cable seal (2000) with electronic tamper detection module (500) in locked configuration of Figure 5.
The cable seal (2000) is configured for enhanced security and is built upon the configuration of the cable seal (1000). As illustrated in Figures 1A-4, the cable seal (2000) also comprises the housing (205), the cable (215), at least one locking assembly (300, 400). The housing (205) defines an internal locking chamber divided into four different compartments (220, 225, 240, 245), with the channel (210) for cable insertion and exit. The cable (215) is anchored within compartment (220) and extends through the channel (210). The closure cap (235) may be included to secure the cable exit.
The first locking assembly (300), located in the third compartment (240) is configured with the first sloped guideway (305), the first rotatable locking wheel (310), and the first biasing means (315). The sloped guideway (305) allows the first locking wheel (310) to move during cable insertion and wedge against the cable (215) during retraction. Similarly, the second locking assembly (400), positioned in compartment (245), mirrors the first locking assembly (300) with the second sloped guideway (405), the second locking wheel (410), and the second biasing means (415), providing a dual-locking mechanism. These mechanical elements operate in a mirrored configuration.
In addition to the cable seal (1000), the cable seal (2000) incorporates an additional electronic tamper detection module (500) to provide an additional layer of security as shown in Figure 6B. This module (500) is configured to detect and record any unauthorized attempts to remove or sever the cable (215), providing real-time or stored tamper evidence.
Referring to Figures 5-6B, the tamper detection module (500) is configured to be disposed of within the second compartment (225) of the locking chamber of the housing (205). The tamper detection module (500) comprises a first conductive terminal (505), a second conductive terminal (510), and a tamper monitoring unit (515).
Further, an insulating barrier (230) is disposed between the second compartment (225) and the fourth compartment (245). The insulating barrier (230) is configured to electrically isolate the conductive terminals (505, 510) from the locking components to ensure controlled electrical contact with the cable (215).
In an embodiment, the first compartment (220) and the third compartment (240) are separated by a non-conductive material.
The insulation between the two ends of the cable (215) is achieved by splitting the housing (205) into compartments (220, 225, 240, 245) as shown in Figure 2. This is essential to prevent shorting of the cable (215) by the metal housing of the cable seal (2000).
The first conductive terminal (505) is disposed of within the second compartment (225). The first conductive terminal (505) has one end configured to be communication with the first end of the cable (215) and other end in communication with the tamper monitoring unit (515) to establish electrical contact between the first end of the cable (215) and the tamper monitoring unit (515).
The second conductive terminal (505) is disposed of within the second compartment (225). The second conductive terminal (510) having one end configured to be communication with the second end of the cable (215) and other end in communication with the tamper monitoring unit (515) to establish electrical contact between the second end of the cable (215) and tamper monitoring unit (515), thereby completing the electrical circuit between the first end of the cable to the second send of the cable.
In an embodiment, one end of the second conductive terminal (505) is configured to be suspended in the channel (210) to establish electrical contact with a second end of the cable (215).
In an embodiment, both conductive terminals (505, 510) are preferably made of a conductive material such as copper, brass, or a conductive alloy.
In an embodiment, the locations of the first conductive terminal (505) and the second conductive terminal (510), may be adjustable to facilitate ease of operation of the cable seal (2000).
The locking assembly (300, 400) and the tamper detection module (500) are configured to operate in conjunction. The tamper monitoring unit (515) is electrically connected to the first conductive terminal (505) and the second conductive terminal (510). The tamper monitoring unit (515) is configured to detect a disruption in electrical continuity between the terminals (505, 510). When the cable (215) is inserted and securely locked, it completes an electrical circuit between the first conductive terminal (505) and the second conductive terminal (510). Any attempt to sever or unauthorized disengagement or removal of the cable (215) will break this circuit, causing a disruption in electrical continuity.
Upon detecting a disruption in electrical continuity, the tamper monitoring unit (515) generates a corresponding tamper indication. In an embodiment, this indication can be stored in a non-resettable memory unit within the tamper monitoring unit (515), ensuring that the tamper status is permanently recorded.
In an embodiment, the tamper detection module (500) further includes a timestamping unit. The timestamping unit is configured to record the exact time of cable (215) severing or unauthorized removal. The timestamping capability provides valuable information for tracking and investigating tamper events.
In another embodiment, the cable seal (2000) includes a visual tamper indicator. The visual tamper indicator is in communication with the tamper detection module (500) and is configured to provide a visible mark or change in colour upon detection of unauthorized access or disengagement of the cable (215). The visual indicator provides immediate visual confirmation of tampering.
Furthermore, the tamper monitoring unit (515) can be configured to transfer the tamper indication to an RFID tag (515) upon detection of unauthorized access or disengagement of the cable (215). The RFID tag (515) may further include an integrated antenna (520) for wireless communication of the tamper status upon interrogation. Both the conductive terminals (505, 510) are connected to the antenna (520) via the tamper monitoring unit (515).
In an embodiment, the tamper detection module (500) includes a wireless communication module. The wireless communication module can be selected from Bluetooth Low Energy (BLE), Near-Field Communication (NFC), RFID, or GSM transceiver. The tamper detection module (500) is configured to transmit tamper status data upon interrogation.
In an embodiment, the wireless communication module may be integrated with a battery-powered microcontroller. The microcontroller enables real-time tamper alerts via GSM, IoT-based platforms, or remote monitoring systems. This feature allows for immediate notification of tampering, enhancing security and response times.
In an embodiment, the locking chamber is constructed from an electrically insulating material. The material is selected from a polymeric composite, high-strength polycarbonate, or a ceramic-based dielectric. The material prevents unintended electrical connections or short circuits between the conductive terminals and other internal components.
In an embodiment, the cable seal (2000) includes the housing (205) is of a plastic material and the compartments (220, 225, 240, 245) are of aluminium that is segmented to create electrical isolation.
In an embodiment, the cable seal (1000, 2000) consisting of the housing (205), the second locking assembly (400) can be used with the conventional cable seal to provide additional strength.
The working principle of the cable seal (1000, 2000) is now explained below:
In the first aspect of the present disclosure, the cable seal (1000) operates on a purely mechanical principle, employing a dual-locking mechanism to secure the cable (215). In its unlocked configuration of the cable seal (1000), the cable (215) is pre-anchored at one end within the housing (205) and is ready for insertion. The insertion process begins by inserting the free end of the cable (215) through the channel (210), which traverses through the housing's (205) internal compartments (225, 240, 245). As the cable progresses, it encounters the first locking wheel (310) and the second locking wheel (410). The wheels (310, 410) are positioned within their respective sloped guideways (305, 405), each having an increasing slope in the direction of the cable insertion. The sloped guideways with the biasing means (315, 415), allow the wheels (310, 410) to compress as the cable is pushed through, facilitating insertion. Once the desired length of cable (215) is passed, the closure cap (235) is engaged.
In the locked configuration of the cable seal (1000), any attempt to retract the cable (215) triggers the locking mechanism. The cable's (215) retraction motion forces the locking wheels (310, 410) to move along the sloped guideways (305, 405). This movement reduces the clearance between the wheels (310, 410) and the walls of the channel (210), creating a wedging effect that significantly increases friction. The mirrored arrangement of the locking assemblies (300, 400) ensures that both wheels (310, 410) engage simultaneously, effectively doubling the locking force. The serrated or textured surfaces of the wheels (310, 410) further enhance grip, preventing slippage.
In the second aspect of the present disclosure, the cable seal (2000) builds upon the mechanical configuration of the cable seal (1000) by incorporating the electronic tamper detection module (500). Similarly, in the unlocked configuration, the electronic cable seal (2000) maintains an identical structure to the cable seal (1000), with the cable (215) positioned for insertion and the locking mechanisms prepared to engage upon insertion. However, the cable seal (2000) also includes two conductive terminals (505, 510) placed within second compartment (225) of the locking chamber of the housing. The first terminal (505) is positioned to make contact with the anchored end of the cable (215), while the second terminal (510) is located to engage with the free end of the cable (215) upon insertion. The tamper monitoring unit (515) is in a standby state, awaiting the completion of an electrical circuit. As the cable (215) is inserted and secured, it bridges the gap between the conductive terminals (505, 510), completing the circuit.
In the locked configuration, if an attempt is made to sever or remove the cable (215), the electrical circuit is disrupted. The tamper monitoring unit (515) immediately detects this disruption and generates a tamper indication. This indication can be stored in a non-resettable memory unit, ensuring a permanent record of the tamper event. Alternatively, or additionally, the tamper indication can trigger a visual indicator or be transmitted wirelessly via an integrated RFID, BLE, NFC, or GSM module. The precise timing of the tamper event can also be recorded via an included timestamping unit. The compartmentalization of the electronic components, and the use of insulating materials, prevents unintended electrical connections and ensures the reliability of the tamper detection system.
In an exemplary embodiment, to counter shim insertion, the dual locking assemblies (300, 400) with their sloped guideways (305, 405) and biasing means (315, 415) create a strong barrier, making it exceedingly difficult to disengage both locking wheels (310, 410) simultaneously. In order to disengage both the first locking assembly (300) and the second locking assembly (400) simultaneously, two metal pins would have to be simultaneously inserted coaxially with the cable (215). However, the arrangement of the closure cap (235) does not leave room for inserting the two pins. Thus, any attempt to tamper with the double lock cable seal (1000) is discouraged. Since the second locking assembly (400) is located lower than the first locking assembly (300), it would be difficult for the pin to reach all the way through the channel (210). Thus, the possibility of theft attempt is discouraged.
The tightly constructed housing (205) further minimizes access points. If someone forces their way in, they'll likely break the parts inside, and even a little movement of the cable will change the electrical signal between the conductive terminals (505, 510), causing the device to record that it's been tampered with. This will trigger a tamper event and will be recorded by the tamper monitoring unit (515). Regarding rotational or twisting manipulation, the mirrored locking configuration inherently resists twisting, as it forces both wheels (310, 410) to wedge more tightly against the channel (210). The serrated surfaces of the wheels (310, 410) enhance grip, preventing slippage. Finally, to address cutting and re-insertion, severing the cable (215) immediately disrupts the electrical circuit between the conductive terminals (505, 510). The tamper monitoring unit (515) logs this disruption in non-resettable memory, ensuring a permanent record, even if the cable (215) is re-inserted.
The foregoing description of the embodiments has been provided for purposes of illustration and not intended to limit the scope of the present disclosure. Individual components of a particular embodiment are generally not limited to that particular embodiment, but, are interchangeable. Such variations are not to be regarded as a departure from the present disclosure, and all such modifications are considered to be within the scope of the present disclosure.
TECHNICAL ADVANCES AND ECONOMICAL SIGNIFICANCE
The present disclosure described herein above has several technical advantages including, but not limited to, the realization of a cable seal, that:
• provides a clear and immediate indication of tampering attempt, ensuring that any unauthorized attempt to breach the seal is easily detectable;
• resists common tampering techniques such as pin insertion, cable twisting, and unauthorized re-sealing are eliminated through a mirrored locking assembly configuration, ensuring that disengagement of one locking assembly is counteracted by the engagement force of the opposing one, the rotatable locking wheels with serrated surfaces prevent twisting from altering engagement;
• discourages theft attempt by employing an advanced anti-tamper and anti-twist configuration, making unauthorized removal significantly more difficult, two-stage locking with sequential locking wheels, ensuring that even if one wheel momentarily disengages, the second prevents full retraction;
• increased security to belongings by ensuring that any removal attempt either completely destroys the seal or results in visible, irreversible evidence of tampering;
• prevents re-insertion of a severed cable, eliminating the risk of undetectable re-sealing when excess cable length is available;
• features a robust housing structure that protects internal locking components from direct access and prevents manipulation through external tools;
• ensures ease of application while maintaining high resistance to forced removal, making it suitable for securing high-value shipments, cargo, and restricted access areas;
• prevents unauthorized removal and tampering while ensuring secure engagement of the cable through a dual-locking mechanism with sequential engagement, use of sloped guideways directs the locking wheels into engagement, preventing retraction, while biasing means maintain continuous contact with the cable, restricting its withdrawal;
• continuously monitors the electrical continuity of the cable and generates an immediate alert upon severing or unauthorized removal and triggering a response from the tamper monitoring unit;
• continuously tracks the status of the cable and records tamper events, which are permanently logged and cannot be reset; and
• offers real-time security tracking and physical resistance to tampering, making it suitable for applications such as cargo shipments, banking security, pharmaceutical logistics, and critical infrastructure protection.
The foregoing description of the specific embodiments so fully reveals the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.
Throughout this specification the word “comprise”, or variations such as “comprises” or “comprising”, will be understood to imply the inclusion of a stated element, or step, or group of elements, or steps, but not the exclusion of any other element, or step, or group of elements, or steps.
The use of the expression “at least” or “at least one” suggests the use of one or more elements or ingredients or quantities, as the use may be in the embodiment of the disclosure to achieve one or more of the desired objects or results.
While considerable emphasis has been placed herein on the components and component parts of the preferred embodiments, it will be appreciated that many embodiments can be made and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other changes in the preferred embodiment as well as other embodiments of the disclosure will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the disclosure and not as a limitation. ,CLAIMS:WE CLAIM:
1. A cable seal (1000), comprising:
• a housing (205) defining an internal locking chamber with a channel (210) extending therethrough;
• a cable (215) extending through said housing and received securely within said channel (210);
• a first locking assembly (300) configured in said locking chamber, said first locking assembly (300) comprising:
o a first sloped guideway (305) having an increasing slope in the direction of the cable (215) insertion;
o a first locking wheel (310) configured to be movably disposed in said first sloped guideway (305), and further configured to receive and engage the cable (215);
o a first biasing means (315) urging said first locking wheel (310) toward the cable (215) to facilitate movement in the direction of cable (215) insertion and restrict movement in a retraction direction;
• a second locking assembly (400), configured in said locking chamber, said second locking assembly (400) comprising:
o a second sloped guideway (405) having an increasing slope in the direction of the cable (215) insertion;
o a second locking wheel (410) configured to be movably disposed in said second sloped guideway (405) in the path of the cable (215), said second locking wheel (410) configured to receive and engage the cable (215) at a position distinct from said first locking wheel (310);
o a second biasing means (415) urging said second locking wheel (410) toward the cable (215) to facilitate movement in the insertion direction and restrict movement in the retraction direction; and
wherein said first locking assembly (300) and said second locking assembly (400) operate in a mirrored configuration, such that any attempt to disengage any one of said locking wheel (310, 410) is counteracted by the engagement force of respective said opposing locking wheel (310, 410) to prevent simultaneous disengagement of both of said wheels (310, 410) from the cable (215) in an operative locked configuration.
2. The cable seal (1000) as claimed in claim 1, wherein each of said first and second locking wheels (310, 410) are configured with a serrated or textured outer surface, to grip and prevent slippage of the cable in an operative locked configuration.
3. The cable seal (1000) as claimed in claim 2, wherein each of said first and said second locking wheels (310, 410) is configured to be rotatably mounted within said respective sloped guideway (305, 405) to allow said locking wheels (310, 410) to rotate when the cable (215) is inserted and wedge against the cable (215) when an attempt is made to retract the cable (215).
4. The cable seal (1000) as claimed in claim 3, wherein said sloped guideways (305, 405) are integrally formed within said locking chamber of said housing (205) to provide an engagement path for said locking wheels (310, 410).
5. The cable seal (1000) as claimed in claim 1, wherein each of said sloped guideway (305, 405) is inclined in the direction of insertion of cable (215) to allow said locking wheels (310, 410) to move in the cable (215) is pushed in while remaining under the restoring force of said biasing means (315, 415).
6. The cable seal (1000) as claimed in claim 1, wherein said locking wheels (310, 410) move along said sloped guideways (305, 405) when the cable (215) is pulled in a retraction direction, thereby reducing the clearance between said wheels (310, 410) and the wall of said locking channel (210), to facilitate increase in frictional engagement, and sequentially double locking the cable (215) in place to prevent unauthorized removal.
7. The cable seal (1000) as claimed in claim 6, wherein said sloped guideways (305, 405) are angled between 2.5° and 30° relative to the plane of said locking chamber.
8. The cable seal (1000) as claimed in claim 1, wherein said channel (210) having a first opening configured to receive said cable (215) and a second opening configured for the exit of said cable (215), said channel (210) is configured to guide said cable (215) into engagement with said locking assembly while preventing misalignment during insertion.
9. The cable seal (1000) as claimed in claim 8, includes a closure cap (235), configured at the cable exit and further configured to extend at least partially to accommodate at least an extended portion of the cable (215) in the locked configuration.
10. The cable seal (1000) as claimed in claim 1, wherein said first and second locking wheels (310, 410) are disposed on different planes within said locking chamber, such that said second locking wheel (410) engages the cable (215) at a position downstream of said first locking wheel (310), to provide double locking of the cable (215).
11. A cable seal (2000) with electronic tamper detection (500), said cable seal (2000) configured to secure a cable and detect unauthorized removal, said cable seal (2000) comprising:
• a housing (205) defining an internal locking chamber with a channel (210) extending therethrough;
• a cable (215) extending through said housing (205);
• at least one locking assembly (300, 400) configured in said locking chamber, said locking assembly (300, 400) comprising:
o at least one locking wheel (310, 410) configured to engage the cable and restrict movement in a retraction direction;
o at least one biasing means (315, 415) urging said locking wheel toward the cable (215) to maintain engagement;
• a tamper detection module (500) comprising:
o a first conductive terminal (505) disposed in said locking chamber and configured to establish electrical contact with a first end of the cable (215);
o a second conductive terminal (510) disposed in said locking chamber and configured to establish electrical contact with a second end of the cable (215), wherein insertion of the cable (215) completes an electrical circuit;
o a tamper monitoring unit (515) electrically connected to said first and second conductive terminals (505, 510), said tamper monitoring unit (515) configured to detect a disruption in electrical continuity upon unauthorized removal or severing of the cable (215) and generate a corresponding tamper indication; and
wherein said locking assembly (300, 400) and said tamper detection module (500) operate in conjunction, such that the removal of the cable (215) is physically restricted by said locking assembly (300, 400) and any severing or unauthorized disengagement or removal of the cable (215) results in an immediate disruption in electrical continuity, causing said tamper monitoring unit (515) to detect the disruption and generate a corresponding tamper indication.
12. The cable seal (2000) as claimed in claim 11, wherein said locking assembly includes a first locking assembly (300) and a second locking assembly (400), said second locking assembly (400) is configured in a mirrored configuration relative to said first locking assembly (300), such that any attempt to disengage one of said locking assemblies (300, 400) is counteracted by the engagement force of the respective opposing locking assembly (300, 400), to prevent simultaneous disengagement of both locking assemblies (300, 400) from the cable (215).
13. The cable seal (2000) as claimed in claim 12, wherein said first locking assembly (300) includes:
• a first sloped guideway (305) having an increasing slope in an operative direction;
• a first locking wheel (310) movably disposed within said first sloped guideway (305), said first locking wheel (310) configured to receive and engage the cable (215) upon insertion; and
• a first biasing means (315) urging said first locking wheel (310) toward the cable (215), wherein said first locking wheel (310) moves along said first sloped guideway (305) during cable (215) insertion and moves opposite during cable (215) retraction, for reducing clearance and increasing engagement force against the cable (215).
14. The cable seal (2000) as claimed in claim 12, wherein said second locking assembly (400) includes:
• a second sloped guideway (405) having an increasing slope in an operative direction;
• a second locking wheel (410) movably disposed within said second sloped guideway (405), said second locking wheel (410) configured to receive and engage the cable (215) at a position distinct from said first locking wheel (310); and
• a second biasing means (415) urging said second locking wheel (410) toward the cable (215), said second locking wheel (410) moves along said second sloped guideway (405) during cable (215) insertion and moves opposite during cable (215) retraction, for reducing clearance and increasing engagement force against the cable (215).
15. The cable seal (2000) as claimed in claim 12, wherein said first and second locking wheels (310, 410) are disposed on different planes within said locking chamber, such that said second locking wheel (410) engages the cable (215) at a position downstream of said first locking wheel (310), to provide sequential double locking of the cable (215).
16. The cable seal (2000) as claimed in claim 12, wherein said first and second locking wheels (310, 410) are rotatably mounted within said locking chamber, such that the wheels (310, 410) rotate in the insertion direction of the cable (215) and wedge against the cable (215) during retraction to restrict the movement of the cable (215).
17. The cable seal (2000) as claimed in claim 11, wherein said tamper detection module (500) includes a non-resettable memory unit, said memory unit is configured to store a tamper status upon detection of unauthorized cable (215) removal or severing.
18. The cable seal (2000) as claimed in claim 17, wherein said tamper detection module (500) includes a timestamping unit, said timestamping unit is configured to record the exact time of cable (215) severing or unauthorized removal.
19. The cable seal (2000) as claimed in claim 11, includes a visual tamper indicator, said indicator being configured to be in communication with said tamper detection module (500) to provide a visible mark or change in colour upon detection of unauthorized access or disengagement of the cable (215).
20. The cable seal (2000) as claimed in claim 11, wherein said tamper monitoring unit (515) is configured to transfer the tamper indication to a RFID (515) upon detection of unauthorized access or disengagement of the cable (215).
21. The cable seal (2000) as claimed in claim 20, wherein said RFID (515) further includes an integrated antenna (520), said antenna (520) configured to wireless communication of tamper status upon interrogation.
22. The cable seal (2000) as claimed in claim 11, wherein said tamper detection module (500) includes a wireless communication module, said wireless communication module is selected from Bluetooth Low Energy (BLE), Near-Field Communication (NFC), RFID, or GSM transceiver, and configured to transmit tamper status data upon interrogation.
23. The cable seal (2000) as claimed in claim 22, wherein said wireless communication module is integrated with a battery-powered microcontroller, said microcontroller enabling real-time tamper alerts via GSM, IoT-based platforms, or remote monitoring systems.
24. The cable seal (2000) as claimed in claim 11, wherein said locking chamber is constructed from an electrically insulating material, said material being selected from a polymeric composite, high-strength polycarbonate, or a ceramic-based dielectric, said material prevents unintended electrical connections or short circuits between the conductive terminals and other internal components.
25. The cable seal (2000) as claimed in claim 11, wherein said locking chamber having an internal partition structure, said partition structure includes:
• a first compartment (220) configured to enclose said locking assembly (300, 400), said first compartment (220) configured to prevent physical interference between the locking components and the conductive terminals;
• a second compartment (225) configured to enclose said tamper detection module (500), said second compartment (225) configured to be electromagnetically shielded to mitigate electromagnetic interference (EMI); and
• a third compartment (240) configured to enclose said first locking assembly (300);
• a fourth compartment (245) configured to enclose said second locking assembly (400);
• an insulating barrier (230) disposed between said second compartment (225) and said fourth compartment (245), said insulating barrier (230) configured to electrically isolate the conductive terminals (505, 510) from the locking components to ensure controlled electrical contact with the cable (215).

Dated this 04th Day of March 2025

_______________________________
MOHAN RAJKUMAR DEWAN, IN/PA – 25
OF R. K. DEWAN & CO.
AUTHORIZED AGENT OF APPLICANT