FORM 2
THE PATENTS ACT, 197C (39 OF 1970)
THE PATENT RULES, 2003 COMPLETE SPECIFICATION
(See Section 10 & Rule 13)
TITLE OF THE INVENTION: FLUID CONTROL VALVE FOR BRAKE SYSTEM
APPLICANT: ADVIK HI-TECH PVT LTD
An Indian Entity Having Address As:
PLOT NO.B-5, CHAKAN INDUSTRIAL AREA, PHASE II, VILLAGE: VASULI, TALUKA: KHED, DIST.: PUNE - 410 501, MAHARASHTRA,
INDIA.
The following specification particularly describes the invention and the manner in which it is to be performed.

CROSS-REFERENCE TO RELATED APPLICATIONS AND PRIORITY
[0001 ] The present application claims priority from Indian provisional application having application number 202421007915 and filed on 6th day of February, 2024.
TECHNICAL FIELD
[0002] The present disclosure relates to the field of fluid control systems and, in particular, relates to a fluid control valve for brake system.
BACKGROUND
[0003] This section is intended to introduce the reader to various aspects of art, which may be related to various aspects of the present disclosure that are described or claimed below. This discussion is believed to be helpful in providing the reader with background information to facilitate a better understanding of the various aspects of the present disclosure. Accordingly, it should be understood that these statements in this background section are to be read in this light, and not as admissions of prior art. Similarly, a problem mentioned in the background section or associated with the subject matter of the background section should not be assumed to have been previously recognized in the prior art. The subject matter in the background section merely represents different approaches, which in and of themselves may also correspond to implementations of the claimed technology.
[0004] Fluid control systems (or valves) are widely used for various applications. In automotive industry, the fluid control valves are used in braking systems thereof. Traditional braking systems on two-wheeled vehicles typically involve independent operation of the front and rear brakes. For instance, in scooters, the rear brake is activated via a lever on the left handlebar, while in motorcycles, it is operated through a foot pedal. In such conventional systems, the application of the rear brake alone results in deceleration limited to the rear wheel. During high-force braking, the weight transfer to the front wheel reduces the rear wheel's traction, potentially

causing the rear wheel to lock. This wheel lock-up can lead to skidding and accidents.
[0005] To address these challenges, synchronized braking systems have been developed, facilitating simultaneous application of the front and rear brakes. Various synchronized braking systems with mechanical or hydraulic actuation mechanisms are known in the prior art. Existing hydraulic brake systems are typically divided into separate circuits for controlling the front and rear wheels. However, when only the rear hydraulic brake is activated, the vehicle may become unstable, leading to issues such as shaking or tail flicking, which increase the risk of accidents.
[0006] In existing designs/systems, activation of the front brake lever causes a single piston within a valve body of the fluid control valve to move, creating the necessary braking action. However, these designs/systems exhibit limitations such as when the front brake lever is activated, the entire piston slides within the valve body, which can result in inefficient operation. Further, only two of three seals on the piston come into contact with a bore face, reducing friction and impacting the braking force. Furthermore, this reduced contact area decreases the piston sliding force and minimizes seal wear, leading to longer component life but reduced overall braking performance.
[0007] In light of the foregoing discussion, there exists a need for an improved fluid control valve for brake system which can address at least one of the above discussed challenges.
SUMMARY
[0008] Before the present system and method and its components are summarized, it is to be understood that this disclosure is not limited to the system and its arrangement as described, as there can be multiple possible embodiments which are not expressly illustrated in the present disclosure. The present disclosure overcomes one or more shortcomings of the prior art and provides additional advantages

discussed throughout the present disclosure. Additional features and advantages are realized through the techniques of the present disclosure. It is also to be understood that the terminology used in the description is for the purpose of describing the versions or embodiments only and is not intended to limit the scope of the present disclosure. This summary is not intended to identify essential features of the claimed subject matter nor is it intended for use in detecting or limiting the scope of the claimed subject matter.
[0009] In an example aspect, the present disclosure provides a fluid control valve. The fluid control valve includes a valve body, a first sliding element, a second sliding element, a connecting element and a delay member. In addition, the valve body defines a first inlet port, a first outlet port, a second inlet port and an internal cavity. The first inlet port, the first outlet port, the second inlet port are connected to the internal cavity. Further, the first sliding element and the second sliding element are disposed within the internal cavity. In addition, the connecting element is mounted in a second end of the internal cavity. Furthermore, the delay member is positioned between the second sliding element and the connecting element. The delay member exerts a force on the second sliding element and the first sliding element.
[0010] In an embodiment, the fluid control valve includes a spacer element disposed between the first sliding element and the second sliding element.
[0011] In another embodiment, the fluid control valve includes at least one first sealing element disposed over the first sliding element to establish a fluid-tight seal with the walls of the internal cavity.
[0012] In yet another embodiment, the fluid control valve includes at least one second sealing element and at least one third sealing element disposed over the second sliding element. The at least one second sealing element establishes a fluid-tight seal with the walls of the internal cavity.

[0013] In yet another embodiment, the fluid control valve includes a retaining element mounted at the second end of the internal cavity to restrict lateral movement of the connecting element.
[0014] In yet another embodiment, the fluid control valve includes at least one fourth sealing element positioned between the connecting element and the walls of the internal cavity to establish a fluid-tight seal therebetween.
[0015] In yet another embodiment, the first inlet port is fluidically-connected to a first activation unit. The first outlet port is fluidically-connected to a first actuation unit. Additionally, actuation of the first activation unit facilitates flow of a fluid to the first inlet port to facilitate translation of the first sliding element and elastic-deformation of the at least one third sealing element to enable flow of the fluid to the first outlet port, enabling actuation of the first actuation unit.
[0016] In yet another embodiment, the second inlet port is fluidically-connected with a second fluid circuit. The second fluid circuit includes a second activation unit fluidically-connected to a second actuation unit. Additionally, actuation of the second actuation unit simultaneously facilitates, actuation of the second actuation unit and flow of an excess fluid from the second fluid circuit to the second inlet port to enable translation of the first sliding element and the second sliding element, facilitating a delayed actuation of the first actuation unit with respect to the second actuation unit.
[0017] In yet another embodiment, the valve body defines a passage connected to the internal cavity and to the first inlet port, to facilitate pressure build-up in a first fluid circuit. The first fluid circuit includes the first activation unit fluidically-connected to the first actuation unit.
[0018] In yet another embodiment, the fluid control valve includes a blocking means to clog an end of the passage via exertion of force by tightening a locking means in the passage. The locking means is removably connected to the valve body.

BRIEF DESCRIPTION OF FIGURES
[0019] Having thus described the disclosure in general terms, references will now be made to the accompanying figures, wherein:
[0020] FIG. 1 illustrates a cross-sectional view (100a) of a fluid control valve (100), in accordance with various embodiments of the present disclosure; and
[0021] FIG. 2 illustrates a perspective view (100b) of the fluid control valve (100), in accordance with various embodiments of the present disclosure.
[0022] It should be noted that the accompanying figures are intended to present illustrations of exemplary embodiments of the present disclosure. These figures are not intended to limit the scope of the present disclosure. It should also be noted that accompanying figures are not necessarily drawn to scale.
DETAILED DESCRIPTION
[0023] Reference will now be made in more detail to embodiments, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout the specification. In this regard, the present embodiments may have different forms and should not be construed as being limited to the descriptions set forth herein. Accordingly, the embodiments are merely described below, by referring to the figures, to explain aspects of embodiments of the present description. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. Throughout the present disclosure, the expression "at least one of a, b and c" indicates only a, only b, only c, both a and b, both a and c, both b and c, all of a, b, and c, or variations thereof.
[0024] The subject matter of the present disclosure may include various modifications and various embodiments, and example embodiments will be illustrated in the drawings and described in more detail in the detailed description. Effects and features of the subject matter of the present disclosure, and

implementation methods therefor will become clear with reference to the embodiments described herein below together with the drawings. The subject matter of the present disclosure may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
[0025] Hereinafter, embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. The same or corresponding elements will be denoted by the same reference numerals, and thus, redundant description thereof will not be repeated.
[0026] It will be understood that although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.
[0027] An expression used in the singular may also encompasses the expression of the plural, unless it has a clearly different meaning in the context.
[0028] In the following embodiments, it is to be understood that the terms such as "including," "includes," "having," "comprises," and "comprising," are intended to indicate the existence of the features or elements disclosed in the specification, and are not intended to preclude the possibility that one or more other features or elements may exist or may be added.
[0029] FIG. 1 illustrates a cross-sectional view (100a) of a fluid control valve (100), in accordance with various embodiments of the present disclosure. FIG. 2 illustrates a perspective view (100b) of the fluid control valve (100), in accordance with various embodiments of the present disclosure.
[0030] In an implementation, the fluid control valve (100) includes a valve body (102), a first sliding element (112), a second sliding element (114), a connecting element (116) and a delay member (118).
[0031] In addition, the valve body (102) defines a first inlet port (104), a first outlet port (106), a second inlet port (108) and an internal cavity (110). The first

inlet port (104), the first outlet port (106), the second inlet port (108) are connected to the internal cavity (110). In an example, at least one of the first inlet port (104), the first outlet port (106), the second inlet port (108), and the internal cavity (110) may define variable cross-sectional radius (or width).
[0032] Further, the first sliding element (112) and the second sliding element (114) are disposed within the internal cavity (110). The first sliding element (112) and the second sliding element (114) may be configured to laterally translate within the internal cavity (110). Also, either of the first sliding element (112) and the second sliding element (114) may be referred to as cylinder, piston, or slider, and the like. In an example, length of the first sliding element (112) may be smaller than the second sliding element (114).
[0033] In addition, the connecting element (116) is mounted (or plugged) in a second end (110b) of the internal cavity (110). The connecting element (116) may be referred to as a sealing cap. In an example, the connecting element (116) may be slidably fitted into the second end (110b) of the internal cavity (110). In another example, the connecting element (116) may define a first end (116a).
[0034] Furthermore, the delay member (118) is positioned between the second sliding element (114) and the connecting element (116). The delay member (118) may involve an elastic member. In an example, the delay member (118) may be a spring. The delay member (118) exerts a force on the second sliding element (114) and the first sliding element (112).
[0035] In an embodiment, the fluid control valve (100) includes a spacer element (120) disposed between the first sliding element (112) and the second sliding element (114). In an example, the spacer element (120) may be referred to as a flat washer or a spacer. In another embodiment, the fluid control valve (100) includes at least one first sealing element (122) disposed over the first sliding element (112) to'establish a fluid-tight seal with the walls of the internal cavity (110). In an example, the first sliding element (112) may involve at least one first groove on

surface thereof to accommodate the at least one first sealing element (122) therein. The at least one first sealing element (122) may be referred to as rubber seal.
[0036] In yet another embodiment, the fluid control valve (100) includes at least one second sealing element (124) and at least one third sealing element (126) disposed over the second sliding element (114). The at least one second sealing element (124) may be referred to as rubber seal. The at least one third sealing element (126) may be referred to as a cup-seal. The at least one second sealing element (124) establishes a fluid-tight seal with the walls of the internal cavity (110). In an example, the second sliding element (114) may involve at least two second groove on surface thereof to accommodate the at least one second sealing element (124) and the at least one third sealing element (126) therein. In an example, the at least one second sealing element (124) may be non-collapsible type of seal and the at least one third sealing element (126) may be a collapsible-type of seal.
[0037] In yet another embodiment, the fluid control valve (100) includes a retaining element (128) mounted at the second end (110b) of the internal cavity (110) to restrict lateral movement of the connecting element (116). In an example, the second end (110b) of the internal cavity (110) may involve at least one third groove to accommodate the retaining element (128) therein. The retaining element (128) may facilitate obstruction of the connecting element (116). In another example, the retaining element (128) may be referred to as a circlip.
[0038] In yet another embodiment, the fluid control valve (100) includes at least one fourth sealing element (130) positioned between the connecting element (116) and the walls of the internal cavity (110) to establish a fluid-tight seal therebetween. In an example, the connecting element (116) at least one third groove on surface thereof for accommodating the at least one fourth sealing element (130). In another example, the at least one fourth sealing element (130) may be referred to as an O-ring seal.

[0039] In yet another embodiment, the valve body (102) defines a passage (132) connected to the internal cavity (110) and to the first inlet port (104), to facilitate pressure build-up in a first fluid circuit. The first fluid circuit includes a first activation unit fluidically-connected to a first actuation unit.
[0040] In some examples, the first fluid circuit may be referred to as front wheel braking system. The first fluid circuit includes the first activation unit fluidically-connected to the first actuation unit. In another example, the first activation unit may be referred to as a front master cylinder assembly. The front master cylinder assembly may involve a front brake lever connected to a front brake master cylinder. In yet another example, the first actuation unit may be referred to as front brake caliper assembly.
[0041] In yet another embodiment, the first inlet port (104) is fluidically-connected to the first activation unit. In an example, the front brake master cylinder assembly may be connected to the first inlet port (104) via a first hose and/or at least one of an end connector, a banjo bolt, and a washer. The first outlet port (106) is fluidically-connected to the first actuation unit. In an example, the front brake caliper assembly may be connected to the first outlet port (106) via a second hose and/or at least one of an end connector, a banjo bolt, and a washer.
[0042] Additionally, actuation of the first activation unit facilitates flow of a fluid to the first inlet port (104) to facilitate translation of the first sliding element (112) and elastic-deformation, by the flow of the fluid, of the at least one third sealing element (126) to enable flow of the fluid to the first outlet port (106), enabling actuation of the first actuation unit. In an example, actuation of the front brake master cylinder assembly may force brake fluid in the internal cavity (110), via the first inlet port (104), resulting in translation of the first sliding element (112) following the elastic-deformation of the at least one third sealing element (126) for that particular instant. Additionally, the elastic-deformation of the at least one third sealing element (126) may enable the brake fluid to be forced out of the first outlet

port (106) to facilitate actuation of the front brake caliper assembly, resulting in declaration (or stoppage) of at least one front wheel.
[0043] In an aspect, the first inlet port (104) may be used for bleeding purpose, that is removing of air bubbles from the first fluid circuit by actuating the front brake master cylinder followed by opening a bleed-valve to release trapped air from the brake fluid.
[0044] In yet another embodiment, the second inlet port (108) is fluidically-connected with a second fluid circuit. In an example, the second fluid circuit may be referred to as rear wheel braking system. The second fluid circuit includes a second activation unit fluidically-connected to a second actuation unit. In another example, the second activation unit may be referred to as a rear master cylinder assembly. The rear master cylinder assembly may involve a rear brake lever connected to a rear brake master cylinder. In yet another example, the second actuation unit may be referred to as rear brake caliper assembly. In yet another example, the rear brake caliper assembly may be connected to the rear master cylinder assembly via a third hose. The third hose may be connected to the first outlet port (106) via at least one of an end connector, a banjo bolt, and a washer.
[0045] Additionally, actuation of the second actuation unit simultaneously facilitates, actuation of the second actuation unit and flow of an excess fluid from the second fluid circuit to the second inlet port (108) to enable translation of the first sliding element (112) and the second sliding element (114), facilitating a delayed actuation of the first actuation unit with respect to the second actuation unit.
[0046] In an example, actuation of the rear brake master cylinder assembly may simultaneously result in actuation of the rear brake caliper assembly and the delayed actuation of the front brake caliper assembly, with respect to the front brake caliper assembly, resulting in declaration (or stoppage) of the at least one rear wheel followed by declaration (or stoppage) of the at least one front wheel.

[0047] The actuation of the front brake caliper assembly may simultaneously force the brake fluid (or excess brake fluid) to the rear caliper assembly and to the second inlet port (108). The excess brake fluid entering the second inlet port (108) may force the first sliding element (112) and the second sliding element (114) to laterally translate within the internal cavity (110). The lateral translation of the first sliding element (112) and the second sliding element (114) may force the brake fluid to the first outlet port (106), facilitating the delayed actuation of the front brake caliper assembly relative to the rear brake caliper assembly. Additionally, the fluid control valve (100) may facilitate variation of pressure in the rear brake caliper assembly compared to the front brake caliper assembly, when the rear brake master cylinder is actuated. Thus, the actuation of the rear master cylinder assembly may facilitate simultaneous actuation of the rear brake caliper assembly followed by the front brake caliper assembly.
[0048] In yet another embodiment, the fluid control valve (100) includes a blocking means (134) to clog an end of the passage (132) via exertion offeree by tightening a locking means (136) in the passage (132). The locking means (136) is removably connected to the valve body (102). In an example, the locking means (136) may be referred to as a grub screw. In another example, the blocking means (134) may be referred to as a steel ball. The passage (132) may involve a micro hole proximal to the internal cavity (110) to facilitate pressure build-up in the first fluid circuit, enabling to achieve a desired braking force in the front brake caliper assembly. The passage (132) may facilitate drilling the micro hole in the valve body (102). In yet another example, the fluid control valve (100) may involve a third plug (138c) connected on the first inlet port (104), a second plug (138b) connected on the first outlet port (106), and a first plug (138a) connected on the second inlet port (108).
[0049] The at least one first sealing element (122) may isolate the brake fluid of the second fluid circuit from the brake fluid of the second fluid circuit. In an example, the at least one first sealing element (122) may isolate brake fluid of the rear wheel braking from brake fluid of the front wheel braking system.

[0050] During translation of the first sliding element (112), by pressing the rear brake lever, the at least one second sealing element (124) may facilitate pressure build-up in the first fluid circuit to facilitate actuation of the front brake caliper assembly. In an example, during release of the rear brake lever, the first sliding element (112) and the second sliding element (114) may be pushed back to their original position due to stiffness of the delay member (118).
[0051] In some examples, the fluid control valve (100) may be installed in existing hydraulic braking system(s) for two-wheeled vehicles. During actuation of the rear brake master cylinder assembly, by a user, the rear braking system of the vehicle may gradually decelerate the at least one rear wheel(s) and, after some delay, may gradually decelerate the at least one forward wheel(s). The fluid control valve (100) may facilitate the delay of few seconds (or few micro-seconds) in decelerating the at least one front wheel(s) with respect to the at least one rear wheel(s), providing a synchronized deceleration in the existing hydraulic braking system(s) for two-wheeled vehicles. In an example, the hydraulic braking system(s) may be referred to as hydraulic braking system(s), such that the fluid may be pressurized air (or gas). Thus, the fluid control valve (100) facilitates synchronized deceleration of the at least one rear wheel(s) and the at least one front wheel(s) for any vehicle/automobile, preventing the vehicle from shaking and drifting during an event of braking and minimizing risk of accident(s).
[0052] The fluid control valve (100) offer numerous technical advantages, but not limited to the following:
• The fluid control valve (100) provides synchronized deceleration by enabling the front and rear brakes to work together, during actuation of the rear braking system, to ensure safe braking compared to independent/existing braking systems.
• By coordinating braking forces, the fluid control valve (100) achieves reduced stopping distances to enhance braking efficiency of the vehicle.

• The fluid control valve (100) improves stability and safety by reducing skidding and keeping the vehicle stable during sudden or hard braking to ensure better control and driver comfort.
• The precise and efficient operation of the fluid control valve (100) allows smooth movement of the first sliding element (112) and/or the second sliding element (114), during braking to reduce friction and to improve overall performance.
• The fluid control valve (100) ensures improved responsiveness by minimizing sliding resistance between the walls of the internal cavity (110) and at least one of the first sliding element (112) and the second sliding element (114), enabling faster and more effective braking action.
• The at least one first sealing element (122), the at least one second sealing element (124), and the at least one third sealing element (126) maintains minimal contact with the walls of the internal cavity (110) to ensure extended lifespan, decreased wear and tear and enhanced durability.
• Ease of implementation and manufacturing of the fluid control valve (100) allows it to be integrated into existing vehicles with minimal modifications, while maintaining a compact design.
• Cost-efficient design of the fluid control valve (100) ensures reliable performance at a lower cost, making it suitable for a wide range of applications.
[0053] It should be understood that embodiments described herein should be considered in a descriptive sense only and not for purposes of limitation. Descriptions of features or aspects within each embodiment should typically be considered as available for other similar features or aspects in other embodiments. While one or more embodiments have been described with reference to the figures, it will be understood by those of ordinary skill in the art that various changes in

form and details may be made therein without departing from the scope of the present disclosure as defined by the following claims, and equivalents thereof.

We Claim:
1. A fluid control valve (100) for a brake system, wherein the fluid control valve
(100) comprising:
a valve body (102) defining a first inlet port (104), a first outlet port (106), a second inlet port (108) and an internal cavity (110), wherein the first inlet port (104), the first outlet port (106) and the second inlet port (108) are connected to the internal cavity (110);
a first sliding element (112) and a second sliding element (114) disposed within the internal cavity (110);
a connecting element (116) mounted in a second end (110b) of the internal cavity (110); and
a delay member (118) positioned between the second sliding element (114) and the connecting element (116), wherein the delay member (118) exerts a force on the second sliding element (114) and the first sliding element (112).
2. The fluid control valve (100) as claimed in claim 1, comprises a spacer element (120) disposed between the first sliding element (112) and the second sliding element (114).
3. The fluid control valve (100) as claimed in claim 2, comprises at least one first sealing element (122) disposed over the first sliding element (112) to establish a fluid-tight seal with walls of the internal cavity (110).
4. The fluid control valve (100) as claimed in claim 3, comprises at least one second sealing element (124) and at least one third sealing element (126) disposed over the second sliding element (114), wherein the at least one second sealing element (124) establishes a fluid-tight seal with the walls of the internal cavity (110).

5. The fluid control valve (100) as claimed in claim 4, comprises a retaining element (128) mounted at the second end (110b) of the internal cavity (110) to restrict lateral movement of the connecting element (116).
6. The fluid control valve (100) as claimed in claim 5, comprises at least one fourth sealing element (130) positioned between the connecting element (116) and the walls of the internal cavity (110) to establish a fluid-tight seal therebetween.
7. The fluid control valve (100) as claimed in claim 6, wherein the first inlet port (104) is fluidically-connected to a first activation unit, wherein the first outlet port (106) is fluidically-connected to a first actuation unit, wherein actuation of the first activation unit facilitates flow of a fluid to the first inlet port (104) to facilitate translation of the first sliding element (112) and elastic-deformation of the at least one third sealing element (126) to enable flow of the fluid to the first outlet port (106), enabling actuation of the first actuation unit.
8. The fluid control valve (100) as claimed in claim 6, wherein the second inlet port (108) is fluidically-connected with a second fluid circuit, wherein the second fluid circuit comprises a second activation unit fluidically-connected to a second actuation unit, wherein actuation of the second actuation unit simultaneously facilitates actuation of the second actuation unit and flow of an excess fluid from the second fluid circuit to the second inlet port (108), enabling translation of the first sliding element (112) and second sliding element (114), to facilitate a delayed actuation of a first actuation unit with respect to the second actuation unit.
9. The fluid control valve (100) as claimed in claim 7, wherein the valve body (102) defines a passage (132) connected to the internal cavity (110) and to the first inlet port (104), facilitating pressure build-up in a first fluid circuit, wherein the first fluid circuit comprises the first activation unit fluidically-connected to the first actuation unit.

10. The fluid control valve (100) as claimed in claim 9, comprises a blocking means (134) to clog an end of the passage (132) via exertion of force by tightening a locking means (136) in the passage (132), wherein the locking means (136) is removably connected to the valve body (102).