DESC:A PIPE JOINER ASSEMBLY
TECHNICAL FIELD
[001] The present subject matter described herein, in general, relates to repairing defects in pipes, and more particularly to a pipe joiner assembly used to repair a damaged pipe in an efficient and economical way without excavation or digging a longer trench.

BACKGROUND
[002] The pipes are used for various purposes, including domestic and industrial purposes. Piping Design is an engineering discipline related to the science of piping engineering involving development of efficient piping processes that safely transport fluids from one location to another. Along with core industrial applications of pipes, piping is widely used in agriculture, including irrigation water supply, Potable water supply, municipal water supply system, drainage lines etc. Pipes are widely used in large and small projects such as indoor and outdoor water supply in urban and rural areas, rural water improvement, farmland irrigation, brine pipelines in the salt and chemical industry, water delivery in aquaculture, mining, ventilation, water supply and drainage and landscaping sprinkler irrigation etc.

[003] In such widespread usage of piping, in case of large pipe networks, repairing a damaged pipe becomes a very crucial task. A pipe gets damaged due to several reasons. Various methods of coupling/joining have been employed to repair damaged pipes efficiently in a pipe network. A coupling (or coupler) is a very short length of pipe or tube, with a socket at one or both ends that allows two pipes or tubes to be joined, welded (steel), brazed or soldered (copper, brass etc.) together. Following are a few examples of existing couplers: ring type repair coupler, solvent type repair coupler, one end long repair coupler, mechanical joint type repair coupler, groove type couplers, two half sleeve type coupler, spool pipe repairing method etc.

[004] However, there are various issues with all the above-mentioned existing types of couplers. For example, to-and-fro sliding of the joiner over the pipe results in poor joints and requires more effort. Generally, while installing any coupler, a longer length of excavation / trenching has to be performed, and the existing pipes need to be moved sideways to insert the joiner. The length of excavation depends on the diameter of pipe, i.e., bigger the pipe diameter, longer the excavation length (say 6 meter or more even if damage is only 150mm long). Thus, more effort is required to insert the joiner in a short span of time. As more components are involved with complicated mechanisms of jointing, and longer length of excavation/ trenching, result in high cost and more time consumption.

[005] Therefore, there is a need to develop a pipe joiner, having a compact size, simple to use, inexpensive and economical in cost, time saving, eliminating requirements of sideways movement of the damaged pipe, eliminating movement of joiner to-and-fro over the pipe (i.e., to have only single direction insertion), eliminating requirement of longer length of excavation / trenching and suitable for pressure line application.
SUMMARY
[006] The present invention discloses a compact pipe joiner assembly to make a continuous coaxial connection between the two separated sections of the damaged pipe. The pipe joiner assembly comprises a first adaptor, a central housing pipe, a second adaptor, and an axially movable pipe. Further, the pipe joiner assembly may comprise a coupler adapted to join with a section of the damaged pipe and the axially movable pipe. The first adaptor, the central housing pipe, the second adaptor, the axially movable pipe, and the coupler, respectively are coaxially aligned in the order. The axially movable pipe may comprise an integral socket. The fist adapter is configured to connect directly and coaxially with the first section of the damaged pipe, and the axially movable pipe is configured to connect coaxially with the second section of the damaged pipe either through the integral socket or the coupler. The axially movable pipe is configured to elongate axially/ longitudinally to connect with the second section of the damaged pipe either through the integral socket or the coupler.

BRIEF DESCRIPTION OF THE DRAWINGS
[007] The detailed description is described with reference to the accompanying figures. In the figures, the leftmost digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the drawings to refer like features and components.
[008] Figure 1 illustrates a damaged pipe (2000).
[009] Figure 2 illustrates the damaged pipe (2000) with a pipe joiner assembly (1000).
[0010] Figure 3 illustrates a first section (2100) and a second section (2200) of the pipe (2000) with the pipe joiner assembly (1000).
[0011] Figure 4 illustrates a front view of the pipe joiner assembly (1000).
[0012] Figure 5 illustrates a sectional view of a first adaptor pipe (100).
[0013] Figure 6 illustrates a sectional view of an integral joint surface section (150) of the first adaptor pipe (100).
[0014] Figure 7 illustrates a sectional view of a central housing pipe (200).
[0015] Figure 8 illustrates a sectional view of a second adaptor pipe (300).
[0016] Figure 9 illustrates a sectional view of a portion (355) of the second adaptor pipe (300).
[0017] Figure 10 illustrates a sectional view of an axially moving pipe (400).
[0018] Figure 11 illustrates a sectional view of the pipe joiner assembly (1000) in a collapsed condition.
[0019] Figure 12 illustrates a sectional view of the pipe joiner assembly (1000) in an axially elongated condition.
[0020] Figure 13 illustrates a sectional view of a coupler unit (500).
[0021] Figure 14 illustrates the second section (2200) connected with the coupler unit (500).
[0022] Figure 15 illustrates the pipe joiner assembly (1000) connected with the first section (2100).
[0023] Figure 16 illustrates the completely connected pipe joiner assembly (1000) with the first section (2100) and the second section (2200).
[0024] Figure 17 illustrates an axially moving pipe (400) with an integral socket (460).
DETAILED DESCRIPTION
[0025] A pipe can be damaged due to several reasons. The damaged portion of the pipe is replaced by a joiner to repair the damaged pipe. Before installing any coupler, the damaged portion is removed from the pipe by cutting. The cutting of the damaged portion results in dividing the damaged pipe into two sections, say ‘a first section’ and ‘a second section’.

[0026] The present invention discloses a compact pipe joiner assembly for making a continuous coaxial connection between the two separated sections of the damaged pipe. The pipe joiner assembly of suitable diameter is selected, depending on the diameter of the damaged pipe. The pipe joiner assembly comprises a first adaptor, a housing pipe, a second adaptor, an axially movable pipe, and a coupler. The first adaptor, the housing pipe, the second adaptor, the axially movable pipe, and the coupler, respectively are coaxially aligned in the order. The first adapter is configured to connect directly and coaxially with the first section of the damaged pipe, and the axially movable pipe is configured to connect coaxially with the second section of the damaged pipe through the integral socket or coupler. The axially movable pipe is configured to elongate axially/ longitudinally to connect with the second section of the damaged pipe. The connections of all the components of the pipe joiner assembly with each other and with the sections of the damaged pipe, may be made by threading, solvent paste, rubber seal or any other suitable method. A solvent cement can be used to form concrete connections between the components of the pipe joiner assembly and between the pipe joiner assembly and the sections of the damaged pipes.

[0027] Referring to Figure 1, illustrates a pipe (2000) with a damage to be repaired with a pipe joiner assembly in accordance with the present disclosure. The pipe (2000) has a crack / damage (2500) on a periphery as shown in Figure 1. The crack / damage (2500) portion is repaired by replacing the cracked/ damaged portion of the pipe (2000) with the pipe joiner assembly in accordance with the present disclosure. The damaged portion (2500) may be cut or removed for mounting the pipe joiner assembly. Referring to Figure 2, illustrates the damaged pipe (2000) with the pipe joiner assembly (1000) in accordance with the present disclosure. After the removal of the damaged portion (2500) from the pipe (2000), the pipe (2000) is divided into two sections, a first section (2100) and a second section (2200). Referring to Figure 3, illustrates the damaged pipe (2000) with two cut sections (2100, 2200) in accordance with the present disclosure.

[0028] In an embodiment of the present disclosure, a pipe joiner assembly for repairing a damaged pipe is disclosed. The pipe joiner assembly comprises a first adaptor pipe having two portions at a front end, a central housing pipe coaxially coupled with the first adaptor pipe along an axis “X”, a second adaptor pipe coaxially coupled with the central housing pipe, and an axially movable pipe coupled with the second adaptor pipe at a rear end. The first adaptor pipe comprises a lower unit and an upper unit integrally coupled with each other. The housing pipe comprises a bottom side and a top side. The second adaptor pipe comprises a lower unit and an upper unit integrally coupled with each other. The axially movable pipe comprises a bottom side and a top side and adapted to fit with the second adaptor pipe. The damaged pipe is cut into a first section and a second section. The central housing pipe is joint with the first adaptor pipe and the second adaptor pipe, the axially movable pipe is configured to enter co-axially at the top side of the upper unit of the second adaptor pipe, slides along a length of the housing pipe at the axis “X”, and continue to slide till the bottom side of the axially movable pipe touches the upper unit of the first adaptor pipe. The lower portion of the first adaptor pipe is adapted to enclose the first section of the damaged pipe and the top side of the axially movable pipe is adapted to enclose the second section of the damaged pipe.

[0029] Referring to Figure 4, illustrates a pipe joiner assembly (1000) in accordance with an exemplary embodiment of the present disclosure. The pipe joiner assembly (1000) comprises a first adaptor pipe (100) having two portions at a front end (1010), a central housing pipe (200) coaxially coupled with the first adaptor pipe (100) along an axis “X”, a second adaptor pipe (300) coupled with the housing pipe (200), an axially movable pipe (400) coupled with the second adaptor pipe (300) at a rear end (1020). The first adaptor (100) and the second adaptor (300) are connected through the housing pipe (200). The housing pipe (200) is configured to enclose at least a portion of the axially movable pipe (400) within the housing pipe (200). The axially movable pipe (400) is configured to slide / move axially along a length of the housing pipe (200).

[0030] Referring to Figure 5, illustrates the first adaptor pipe (100) in accordance with the embodiment of the present disclosure. The first adaptor pipe (100) comprises two portions integrally coupled with each other. The two portions are a lower unit (110) and an upper unit (120). An inner surface of the first adaptor pipe comprises a lower surface section (115) in the lower unit (110), an upper surface section (125) in the upper unit (120), and an integral joint surface section (150) at the joint of the lower unit (110) and the upper unit (120). The inner surface is angled downstream towards the front end (1010) of the pipe joiner assembly (1000). In other words, the inner surface is angled upstream towards the rear end (1020) of the pipe joiner assembly (1000). Further, the inner surface may be slightly protruded in an angle perpendicular to the axis “X” for accommodating the section (2100) of the damaged pipe (2000) (not shown) within the lower unit (110). The diameter of the upper unit (120) is greater than the diameter of the lower unit (110). In another embodiment of the present disclosure, the inner surface is angled downstream towards the rear end (1020) of the pipe joiner assembly (1000).

[0031] In an embodiment, the integral joint surface (150) comprises three portions, a first portion (151) at the lower inner section (115) is slightly protruded towards the flow area of fluid to accommodate the section (2100) of the pipe (2000) for joint, a second portion (152) is angled upstream towards the upper unit (120) and a third portion (153) slightly protruded towards the upper surface section to accommodate the housing pipe (200). Particularly, the first portion (151) is connected with the lower surface section (115) and slightly protruded towards the center of the adaptor (100), the second portion (152) is angled outward towards the upper surface section (125) and the third portion (153) is slightly protruded towards a periphery of the adaptor and connected with the upper surface section (125) to accommodate the housing pipe (3). The first portion (151) and the third portion (153) may be slightly protruded and made perpendicular with respect to the axis “X”. In another embodiment, the first portion and the third portion may be slightly protruded and angled with respect to the axis “X”.

[0032] In another embodiment of the present disclosure as illustrated in Figure 6, the integral joint surface (150) further comprises a fourth portion (154) being configured as a break surface between the first portion (151) and a second portion (152). The fourth portion (154) is aligned with the axis “X” of the pipe joiner assembly, the break surface is substantially made parallel to the axis of the pipe joiner assembly (1000). Upon joining the first section (2100) of the pipe (2000) at the lower unit (110) with the first adaptor pipe (100) and joining the housing pipe (200) at the upper unit (120) of the adaptor pipe (100), a gap or a break (157) between the pipe (2000) and the housing pipe (200) is formed in the fourth portion (154) and a part or whole of the second portion (152).

[0033] In yet another embodiment of the present disclosure, the third portion (153) may be angled at an angle with the axis “X” of the pipe joiner assembly. The angle of third portion (153) may be same or different as the angle of first portion (151) and second portions (152).

[0034] Referring to Figure 7, illustrates the central housing pipe (200) in accordance with the embodiment of the present disclosure. The housing pipe (200) comprises two sides: a bottom side (210) and a top side (220). The bottom side (210) of the housing pipe (200) is adapted to fit within the upper unit (120) of the first adaptor pipe (100). In other words, the outer diameter section of the housing pipe (200) is fitted within the inner diameter section of the upper unit (120) of the first adaptor pipe (100). The housing pipe (200) and the first adaptor pipe (100) are coupled in such a way that the bottom side (210) of the housing pipe (200) make a contact/ is connected with the third portion (153) of the first adaptor pipe (100). The third portion (153) is configured to work as a stopper for the housing pipe (200) and the hosing pipe (200) adapted to fit within the upper unit (120).

[0035] Referring to Figure 8, illustrates the second adaptor pipe (300) in accordance with one embodiment of the present disclosure. The second adaptor pipe (300) comprises two portions integrally coupled with each other. The two portions: a lower unit (310) and an upper unit (320). An inner surface of the second adaptor pipe (300) comprises a lower surface section (315) in the lower unit (310) and an upper surface section (325) in the upper unit (320). The diameter of the lower unit (310) is greater than the diameter of the upper unit (320). The lower unit (310) and the upper unit (320) are separated by a portion (355) or a stopper portion connected with the upper surface section (325) and the lower surface section (315) to accommodate the housing pipe (200). The top side (220) of the housing pipe (200) is adapted to fit within the lower unit (310) of the second adaptor pipe (300). The portion (355) may be slightly protruded and made perpendicular with respect to the axis “X” as illustrated in Figure 9. The portion (355) is slightly protruded towards a periphery of the adaptor. The axially movable pipe (400) moves along the central axis “X” and contacting the upper surface section (325) of the adaptor. In an alternate embodiment, the second adaptor pipe (300) may be made similar to the first adaptor pipe (100).

[0036] The housing pipe (200) is fitted between the first adaptor pipe (100) and the second adaptor pipe (300). The housing pipe is configured to enter co-axially at the upper unit of the first adaptor pipe (100) along a length of the upper unit. The housing pipe (200) may further continue to move towards the front end and make a contact with third portion (153) of the joint surface (150). Similarly, the housing pipe is configured to enter co-axially at the lower unit (310) of the second adaptor pipe (300) along a length of the lower unit. The housing pipe (200) further may continue to move towards rear end and make a contact with the stopper surface or the portion (355). The housing pipe (200) is fitted between the third portion (153) of the first adaptor and the stopper portion (355) of the second adaptor pipe (300).

[0037] In the exemplary embodiment, the upper unit (320) comprises a plurality of rubber rings (340) integrally mounted on the upper inner section (325). In one embodiment, upper inner section (325) is etched at a plurality of locations and the plurality of rubber rings (340) are mounted within the etched portions of the upper inner section (325). The plurality of rubber rings (340) are mounted at a predefined gap between them, i.e., within the etched portions. In one exemplary implementation of the present disclosure as shown in Figure 8, two rubber rings (340) are coaxially mounted on the upper inner section (325).

[0038] The first adaptor pipe (100), the housing pipe (200), the second adaptor pipe (300) are fixed and joined in the respective order. The length of the housing pipe (200) may vary based on the damaged portion of the damaged pipe (2000). A solvent cement can be used to form concrete connections between the first adaptor pipe (100), the housing pipe (200) and the second adaptor pipe (300). In one of the embodiments of the present disclosure, the first adaptor pipe (100), the housing pipe (200) and the second adaptor pipe (300) are molded as single pieces.

[0039] Referring to Figure 10, illustrates the axially movable pipe (400) in accordance with the embodiment of the present disclosure. The axially movable pipe (400) comprises two sides: a bottom side (410) and a top side (420). The bottom side (410) of the axially movable pipe (400) is adapted to fit within the upper unit (320) of the second adaptor (300). In other words, the outer diameter of the axially movable pipe (400) is fitted within the inner diameter of the upper unit (320) of the second adaptor pipe (300). The axially movable pipe (400) comprises a sliding surface (430) extending along the length of the movable pipe (400) and an outer protrusion (450) at the bottom side (410) of the axially movable pipe (400) adapted to act as a stopper and does not allow it to come out of adapter (300) when coupled. The outer protrusion (450) has a diameter greater than the sliding surface (430) of the movable pipe (400). The outer protrusion (450) provides an angled surface preventing a movement of the axially movable pipe (400) to completely come out of the second adaptor pipe (300).

[0040] For making a complete pipe joiner assembly (1000), when the housing pipe (200) is joint with the first adaptor pipe (100) and the second adaptor pipe (300), the axially movable pipe (400) is further adapted to fit with the second adaptor pipe for making configured to enter co-axially at the top side of the upper unit (320) of the second adaptor pipe (300) through rubber rings (340) and slide/move along a length of the housing pipe (200). The axially movable pipe (400) further may continue to move/slide till the bottom side (410) of the axially movable pipe (400) touches the upper unit (120) of the first adaptor pipe (100) and make a contact with third portion (153) of the joint surface (150). The plurality of rubber rings (340) integrally mounted on the upper inner surface (325) of the upper unit (320) of the second adaptor (300) is adapted to grip/hold the sliding surface (430) of the axially movable pipe (400), making the pipe joiner assembly (1000) watertight and pressure tight. The sliding surface (430) slides or moves axially/longitudinally along the length of the housing pipe when a longitudinal force is applied on the axially movable pipe (400) at the upper side. The longitudinal force required to axially slide/move the axially movable pipe (400) is dependent on the friction caused between the plurality of rubber rings (340) and sliding surface (430) of the axially movable pipe (400). As a safety measure, the outer protrusion (450) at the bottom side (410) of the axially movable pipe (400), acts as a locking mechanism and does not allow the axially movable pipe (400) to completely come out of the second adaptor pipe (300).

[0041] The pipe joiner assembly (1000) as disclosed in the present invention is configured to function in two modes / conditions: ‘a collapsed condition’ and ‘an axially elongated condition’. The connection modes are dependent on the position of the axially movable pipe (400) with respect to the housing pipe (200).

[0042] Referring to Figure 11, illustrates a sectional view of the pipe joiner assembly (1000) in the collapsed condition in accordance with the present disclosure. As shown in figure 11, the pipe joiner assembly (1000) is said to be in the collapsed condition, when the axially movable pipe (400) is moved within the housing pipe (200) to a full possible extent i.e., when the outer protrusion (450) of the axially movable pipe (400) makes a contact with third portion (153) of the joint surface (150) at the first adaptor pipe (100). In other words, the collapsed condition of the pipe joiner assembly (1000) is when the axially movable pipe (400) is moved along the entire length of the housing pipe (200).

[0043] Referring to Figure 12, illustrates a sectional view of the pipe joiner assembly (1000) in the axially elongated condition in accordance with the present disclosure. When the axially movable pipe (400) is being axially moved outside from the housing pipe (200), then this condition is termed as ‘an axially elongated condition’. As shown in figure 12, the pipe joiner assembly (1000) is said to be in an axially elongated condition, when the outer protrusion (450) of the axially movable pipe (400) does not make a contact with third portion (153) of the joint surface (150) at the first adaptor pipe (100). In other words, the axially elongated condition of the pipe joiner assembly (1000) is when the axially movable pipe (400) is moved along a length of the housing pipe (200). The length of the movement may vary based on the length of the damaged portion (2500) on the pipe (2000).

[0044] In another embodiment of the present disclosure, the pipe joiner assembly (1000) may be mounted in the fully elongated condition (not shown). The pipe joiner assembly (1000) is said to be in an axially elongated condition when the outer protrusion (450) of the axially movable pipe (400) make a contact with the rubber rings (340) of the upper unit (320) of the second adaptor (300) thereby not coming out from the second adaptor pipe (300).

[0045] Referring to Figure 13, illustrates a sectional view of a coupler unit (500) in accordance with the present disclosure. The coupler unit (500) may coaxially connect the top side (420) of the axially movable pipe (400) with the section (2200) of the pipe (2000). The coupler unit (500) comprises an upper portion (520), an inner protrusion (550) and lower portion (510). The inner protrusion (550) is configured to avoid direct contact of the top side (420) of the axially movable pipe (400) with the section (2200) of the pipe (2000).

[0046] Further, as illustrated in Figure 14, the pipe joiner assembly (1000) is coaxially aligned with the damaged pipe (2000), where the first adaptor (100) faces the first section (2100) of the damaged pipe (2000) and the axially movable pipe (400) faces the second section (2200) of the damaged pipe (2000). Furthermore, the coupler unit (500) is fixed to the second section (2200) of the damaged pipe (2000). The upper portion (520) of the coupler unit (500) is adapted to enclose the second section (2200) of the pipe (2000) within the upper portion (520) of the coupler unit (500), i.e., the outer diameter of second section (2200) of the pipe (2000) is adapted to fit within inner diameter of the upper portion (520) of the coupler unit (500). Similarly, the lower portion (510) of the coupler unit (500) is adapted to enclose the top side (420) of the axially movable pipe (400) within the lower portion (510) of the coupler unit (500) i.e., the outer diameter of the top side (420) of the axially movable pipe (400) is adapted to fit within inner diameter of the lower portion (510) of the coupler unit (500).

[0047] Referring to Figure 15, illustrates the first adaptor pipe (100) of the pipe joiner assembly (1000) coaxially connected to the first section (2100) of the damaged pipe (2000). The lower portion (110) of the first adaptor pipe (100) is adapted to enclose the first section (2100) of the damaged pipe (2000) within the lower portion (110) i.e., the outer diameter of the first section (2100) of the damaged pipe (2000) is adapted to fit within inner diameter of the lower portion (110) of the first adaptor pipe (100). After establishing the connection of the lower portion (110) of the first adaptor pipe (100) with the first section (2100) of the damaged pipe (2000), a gap (800) remains between the top side (420) of the axially movable pipe (400) and lower portion (510) of the coupler unit (500). Further, the axially movable pipe (400) is manually adjusted by axially moving/ sliding the axially movable pipe (400) to fill the gap (800) and to form a complete coaxial connection of the top side (420) of the axially movable pipe (400) with lower portion (510) of the coupler (500). Figure 16 illustrates the completely installed pipe joiner assembly (1000) on the damaged pipe (2000), i.e., when the both the sections (610, 620) of the pipe (2000) are coaxially connected with the pipe joiner assembly (1000), enabling the pipe (2000) to allow fluid to flow within the pipe (2000) without any leakage.

[0048] In one of the embodiments, as illustrated in Figure 17, the axially movable pipe (400) comprises an integral socket (460) at the top side (420) for coupling the top side (420) with the second section (2200) of the damaged pipe (2000). The use of the integral socket (460) eliminates the need for a separate coupler unit (500).

[0049] In alternative embodiment of the present disclosure, the pipe joiner assembly (1000) further comprises a third adaptor pipe to directly form a co-axial connection between the axially movable pipe (400) with the second section (2200) of the damaged pipe (2000) instead of using the coupler unit (500). The third adaptor pipe may be made similar to the first adaptor pipe (100) and the second adaptor pipe (300). Particularly, the third adaptor pipe comprises two portions integrally coupled with each other. The two portions: a lower unit and an upper unit. An inner surface of the second adaptor pipe comprises a lower surface section in the lower unit and an upper surface section in the upper unit. The inner surface further comprises an integral joint surface section at the joint of the lower unit and the upper unit. The inner surface is angled downstream towards the rear end (1020) of the pipe joiner assembly (1000). Further, the inner surface may be slightly protruded in an angle perpendicular to the axis “X” for accommodating the second section (2200) of the damaged pipe (2000) within the upper unit of the third adaptor pipe. The diameter of the lower unit is greater than the diameter of the upper unit.

[0050] The integral joint surface sections (the integral joint surface section (150) of the first adaptor pipe (100), the portion (355) of the second adaptor pipe (300) and the integral joint surface section of the third adaptor pipe) disclosed in the present disclosure, are configured to provide perfect fitting for joining the pipes and restricting the leakage from the assembly. Further, each of the integral joint surface sections is configured to act as a stopper for the adjacent connecting pipes.

[0051] The plurality of rubber rings (340) integrally mounted on the upper inner section (325), are configured to provide perfect fitting with the sliding surface (430) of the movable pipe (400) and restricting the leakage from the assembly. Further, the plurality of rubber rings (340) is configured to act as a stopper for the axially movable pipe (400).

[0052] In one of the embodiments of the present disclosure, all the components of the pipe joiner assembly (1000) including the first adaptor pipe (100), the housing pipe (200), the second adaptor pipe (300), the axially movable pipe (400) and the coupler unit (500) are made of synthetic polymer of plastic, preferably Polyvinyl chloride (PVC).

[0053] In another embodiment of the present disclosure, the adaptor pipes (100, 300, ) may be manufactured or fabricated as a single piece by a suitable molding process.

[0054] The pipe joiner assembly (1000) of the present invention has the following advantages compared to the conventional pipe joiner.
(i) The pipe joiner assembly is compact in size, simple, economic, timesaving, low-cost solution in repairing the damaged pipe,
(ii) The pipe joiner assembly has an expanding characteristic,
(iii) The pipe joiner assembly assembly in same axis and so the assembly eliminates the requirement moving the pipe sideways,
(iv) The pipe joiner assembly can be moved in a single direction insertion,
(v) No requirement of longer lengths of excavation,
(vi) excavation equivalent to compressed length of joiner is enough,
(vii) The pipe joiner assembly is suitable for pressure line application.

[0055] Although the present disclosure has been described in the context of certain aspects and embodiments, it will be understood by those skilled in the art that the present disclosure extends beyond the specific embodiments to alternative embodiments and/or uses of the disclosure and obvious implementations and equivalents thereof. Thus, it is intended that the scope of the present disclosure described herein should not be limited by the disclosed aspects and embodiments above.
,CLAIMS:We Claim:

1. A pipe joiner assembly (1000) for repairing a damaged pipe (2000), comprising:
a first adaptor pipe (100) having two portions at a front end (1010), wherein the first adaptor pipe (100) comprises a lower unit (110) and an upper unit (120) integrally coupled with each other;
a central housing pipe (200) coaxially coupled with the first adaptor pipe (100) along an axis “X”, wherein the housing pipe (200) comprises a bottom side (210) and a top side (220);
a second adaptor pipe (300) coaxially coupled with the central housing pipe (200), wherein the second adaptor pipe (300) comprises a lower unit (310) and an upper unit (320) integrally coupled with each other, and
an axially movable pipe (400) coupled with the second adaptor pipe (300) at a rear end (1020), wherein the axially movable pipe (400) comprises a bottom side (410) and a top side (420) and adapted to fit with the second adaptor pipe (300);
wherein the damaged pipe (2000) is cut into a first section (2100) and a second section (2200),
the central housing pipe (200) is joint with the first adaptor pipe (100) and the second adaptor pipe (300),
the axially movable pipe (400) is configured to enter co-axially at the top side of the upper unit (320) of the second adaptor pipe (300), slides along a length of the housing pipe (200) at the axis “X”, and continue to slide till the bottom side (410) of the axially movable pipe (400) touches the upper unit (120) of the first adaptor pipe (100);
the lower portion (110) of the first adaptor pipe (100) is adapted to enclose the first section (2100) of the damaged pipe (2000) and top side of the axially movable pipe (400) is adapted to enclose the second section (2200) of the damaged pipe (2000).
2. The pipe joiner assembly as claimed in claim 1, wherein the axially movable pipe is configured to elongate axially/ longitudinally to connect with the second section of the damaged pipe.

3. The pipe joiner assembly as claimed in claim 1, wherein the bottom side (210) of the housing pipe (200) is adapted to fit within the upper unit (120) of the first adaptor pipe (100) and the top side (220) of the housing pipe (200) is adapted to fit within the lower unit (310) of the second adaptor pipe (300), wherein the housing pipe (200) encloses at least a portion of the axially movable pipe (400).

4. The pipe joiner assembly as claimed in claim 1, wherein an inner surface of each adaptor pipe (100, 300) comprises:
a lower surface section (115, 315) in the lower unit (110, 310);
an upper surface section (125, 325) in the upper unit (120, 320); and
an integral joint surface section (150, 350) at the joint of the lower unit (110, 310) and the upper unit (120, 320).

5. The pipe joiner assembly as claimed in claim 4, wherein the inner surface is angled downstream towards the front end (1010) or the rear end (1020) of the pipe joiner assembly (1000).

6. The pipe joiner assembly as claimed in claim 4, wherein the inner surface is protruded at an angle perpendicular to the axis “X” for accommodating at least one section of the damaged pipe (2000).

7. The pipe joiner assembly as claimed in claim 1, wherein the diameter of the upper unit (120) is greater than the diameter of the lower unit (110) in the first adaptor (100) and the diameter of the lower unit (310) is greater than the diameter of the upper unit (320) in the second adaptor (300).

8. The pipe joiner assembly as claimed in claim 1, wherein the integral joint surface (150) comprises:
a first portion (151) at the lower inner section (115) protruded towards the flow area of fluid to accommodate the section (2100) of the pipe (2000) for joint;
a second portion (152) angled upstream towards the upper unit (120); and
a third portion (153) protruded towards the upper surface section to accommodate the housing pipe (300).

9. The pipe joiner assembly as claimed in claim 8, wherein the integral joint surface (150) further comprises a fourth portion (154) aligned with the axis “X” of the pipe joiner assembly forming a breaking surface between the first portion (151) and a second portion (152).

10. The pipe joiner assembly as claimed in claim 1, wherein the lower unit (310) and the upper unit (320) of the second adaptor (300) are separated by a portion (355), the portion (355) is integrally connected with the upper surface section (325) and the lower surface section (315) to accommodate the housing pipe (200).

11. The pipe joiner assembly as claimed in claim 10, wherein the portion (355) is protruded towards a periphery of the second adaptor and made perpendicular with respect to the axis “X.

12. The pipe joiner assembly as claimed in claim 1, wherein the upper unit (320) comprises a plurality of rubber rings (340) integrally mounted on the upper surface section (325).

13. The pipe joiner assembly as claimed in claim 12, wherein the upper surface section (325) is etched at a plurality of locations and the plurality of rubber rings (340) are mounted within the etched portions of the upper surface section (325).

14. The pipe joiner assembly as claimed in claim 12, wherein the plurality of rubber rings (340) is mounted at a predefined gap within the etched portions of the upper surface section (325).

15. The pipe joiner assembly as claimed in claim 1, wherein the pipe joiner assembly comprises a coupler unit (500) adapted to couple the top side (420) of the axially movable pipe (400) with the second section (2200) of the damaged pipe (2000).

16. The pipe joiner assembly as claimed in claim 15, wherein the coupler unit (500) comprises an upper portion (520), an inner protrusion (550) and a lower portion (510).

17. The pipe joiner assembly as claimed in claim 1, wherein the axially movable pipe (400) comprises:
a sliding surface (430) extending along the length of the movable pipe (400), and
an outer protrusion (450) at the bottom side (410) of the axially movable pipe (400) adapted to act as a stopper and restricts the movement to come out of the adapter (300) when coupled.

18. The pipe joiner assembly as claimed in claim 17, wherein the sliding surface (430) slides axially/longitudinally along the length of the central housing pipe when a longitudinal force is applied on the axially movable pipe at the upper side.

19. The pipe joiner assembly as claimed in claim 17, wherein the outer protrusion (450) forms an angled surface having a diameter greater than the sliding surface (430) of the movable pipe (400).

20. The pipe joiner assembly as claimed in claim 1, wherein the axially movable pipe (400) comprises an integral socket (460) at the top side (420) for coupling the top side (420) with the second section (2200) of the damaged pipe (2000).

Dated this 20th day of July 2023

MAHUA ROY CHOWDHURY
IN/PA - 496
(Authorized Patent Agent for the Applicant)