FORM 2
THE PATENTS ACT 1970
[39 OF 1970]
&
The Patents Rules, 2003
COMPLETE SPECIFICATION
[See section 10 and rule 13]
TITLE: “A WHEEL ASSEMBLY FOR A VEHICLE”
Name and address of the Applicant:
TATA MOTORS LIMITED, an Indian company having its registered office at Bombay
House, 24 Homi Mody Street, Hutatma Chowk, Mumbai 400 001, Maharashtra, INDIA.
Nationality: INDIAN
The following specification particularly describes the invention and the manner in which it is to be performed.

TECHNICAL FIELD
Present disclosure in general, relates to the field of automobiles. Particularly, but not exclusively, the present disclosure relates to wheel assembly of a vehicle. Further, embodiments of the present disclosure relate to the constructional configuration of the wheel assembly where a disc of the wheel assembly can be easily removed.
BACKGROUND OF THE DISCLOSURE
Wheel assemblies generally include brake assemblies. The brake assemblies are provisioned in a vehicle for regulating speed at which the vehicle travels and also in order to bring the vehicle to a halt when desired. The brake assemblies of the vehicle are generally operable based on engagement of a disc or a drum, which may be connected to a portion of the wheel of the vehicle for regulating the speed. Such brake assemblies are hydraulically operated, where actuation of a pedal in a cabin of the vehicle allows operation of the brake assemblies.
Generally, discs in disc brake assemblies tend to wear out over a prolonged usage. Further, the discs in brake assemblies have to be serviced or replaced after wear for ensuring the required braking of the vehicle. For replacing of the discs, the wheel has to be initially removed. Further, the brake assembly has to be completely disassembled or removed from the vehicle for accessing the discs in the brake assembly. Components such as brake pads, and calipers are individually disassembled for gaining access to the discs. Furthermore, the discs are replaced with the brake assemblies and all the components including the brake pads and the calipers have to be individually reassembled for assembling the brake assembly and the wheel assembly into an operable condition. The above process of disassembling most of the parts/components in the wheel assembly for gaining access to the discs in the brake assemblies is often tedious and time consuming. Generally, the user/mechanic spends a significant amount of time replacing the discs in the brake assemblies which further increases the service costs. Furthermore, disassembly and re-assembly of a large number of components for replacing discs in brake assemblies may result in errors where few small parts/components are missed out form begin assembled. Consequently, incorrect assembling of the wheel assembly may result in dangerous driving conditions.
The drawbacks/difficulties/disadvantages/limitations of the conventional techniques explained in the background section are just for exemplary purpose and the disclosure would never limit its scope only such limitations. A person skilled in the art would understand that this disclosure

and below mentioned description may also solve other problems or overcome the other drawbacks/disadvantages of the conventional arts which are not explicitly captured above.
SUMMARY OF THE DISCLOSURE
One or more shortcomings of the conventional system are overcome, and additional advantages are provided through the provision of a mount and a vibration dampening system in the present disclosure.
Additional features and advantages are realized through the techniques of the present disclosure. Other embodiments and aspects of the disclosure are described in detail and are considered a part of the claimed disclosure.
In a non-limiting embodiment of the disclosure, a wheel assembly for a vehicle is disclosed. The wheel assembly includes a wheel rim, and a hub connected to the wheel rim. The hub includes at least one first extension extending away from the hub. The assembly includes a disc rotatably receivable by the hub, where the disc is configured to rotate between an engaged position and a disengaged position. The disc includes at least one second extension extending transversely to the at least one first extension, where the first extension and the second extension are aligned to fixedly connect the disc with the hub in the engaged position and the disc in the disengaged position, is disconnected from the hub to remove the disc from the hub.
In an embodiment of the disclosure, the disc is defined with a second hole and the at least one second extension is defined on the disc along the circumferential region of the second hole.
In an embodiment of the disclosure, the assembly includes a protrusion extending from an outer end of the at least one second extension, where the protrusion defines a first surface on the at least one second extension.
In an embodiment of the disclosure, each of the at least one first extension is defined with a first hole and each of the at least one second extension is defined with a second hole to connect the at least one first extension and the at least one second extension.
In an embodiment of the disclosure, the second hole is defined on the first surface of the at least one second extension.

In an embodiment of the disclosure, the first surface is adapted to receive the at least one first extension of the hub, and a free end of the at least one first extension abuts the protrusion of the at least one second extension, when the disc is in the engaged position.
In an embodiment of the disclosure, the first hole of the at least one first extension is aligned with the second hole of the at least one second extension, when the disc is in the engaged position to fixedly couple the disc to the hub.
In an embodiment of the disclosure, the wheel rim is defined with third holes and the third holes are aligned with the first holes and the second holes, when the disc is in the engaged position.
In an embodiment of the disclosure, the assembly includes a plurality of fasteners extending through the first holes, the second holes, and the third holes to fixedly couple the wheel rim, the hub, and the disc.
The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.
BRIEF DESCRIPTION OF THE ACCOMPANYING FIGURES
The novel features and characteristics of the disclosure are set forth in the appended claims. The disclosure itself, however, as well as a preferred mode of use, further objectives, and advantages thereof, will best be understood by reference to the following detailed description of an illustrative embodiment when read in conjunction with the accompanying figures. One or more embodiments are now described, by way of example only, with reference to the accompanying figures wherein like reference numerals represent like elements and in which:
Figure 1 illustrates an exploded view of a wheel assembly of a vehicle, in accordance with an embodiment of the present disclosure.
Figure 2 illustrates an exploded view of the wheel assembly with a hub and a disc, in accordance with an embodiment of the present disclosure.

Figure 3 illustrates a perspective view of the hub from the Figure 2, in accordance with an embodiment of the present disclosure.
Figure 4 illustrates a perspective view of the hub and the disc oriented in a engaged position, in accordance with an embodiment of the present disclosure.
Figure 5 illustrates a perspective view of the hub and the disc oriented in a disengaged position, in accordance with an embodiment of the present disclosure.
The figure depicts embodiments of the disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the wheel assembly of the vehicle without departing from the principles of the disclosure described.
DETAILED DESCRIPTION
The foregoing has broadly outlined the features and technical advantages of the present disclosure in order that the description of the disclosure that follows may be better understood. Additional features and advantages of the disclosure will be described after which form the subject of the disclosure. It should be appreciated by those skilled in the art that the conception and specific embodiments disclosed may be readily utilized as a basis for modifying or designing other arrangements for carrying out the same purposes of the present disclosure. It should also be realized by those skilled in the art that such equivalent constructions do not depart from the spirit and scope of the disclosure. The novel features which are believed to be characteristic of the disclosure, as to its organization, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures. It is to be expressly understood, however, that each of the figures is provided for the purpose of illustration and description only and is not intended as a definition of the limits of the present disclosure.
In the present document, the word “exemplary” is used to mean “serving as an example, instance, or illustration.” Any embodiment or implementation of the present subject matter described as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

While the disclosure is susceptible to various modifications and alternative forms, specific embodiments thereof have been shown by way of example in the drawings and will be described below. It should be understood, however, that it is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternative falling within the scope of the disclosure.
The terms “comprises”, “comprising”, or any other variations thereof, are intended to cover a non-exclusive inclusion, such that an arrangement that comprises a list of components does not include only those components but may include other components not expressly listed or inherent to such mechanism. In other words, one or more elements in the arrangement proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the mount and the system.
The following paragraphs describe the present disclosure with reference to Figures 1-5. In the figures, the same element or elements which have the same functions are indicated by the same reference signs. One skilled in the art would appreciate the component disclosed in the claims, maybe any component which may be used in any given system but not limiting to vehicle and the like.
Figure 1 depicts an exploded view of a wheel assembly (100). The wheel assembly (100) may include a wheel rim (3) with a wheel (5). The wheel assembly (100) may also include a hub (1) and the hub (1) may be fixedly connected with the wheel rim (3) of the wheel assembly (100). The wheel assembly (100) may further include a disc (2) that is rotatably received by the hub (1). Furthermore, the wheel assembly (100) is provided with calipers (6) and the calipers (6) may be selectively operable to engage with the disc (2) for the selective braking of the vehicle. In an embodiment, the disc (2) may be made of any material including but not limited to ceramic materials. In an embodiment, the configuration of the calipers (6) must not be considered as a limitation and the calipers (6) may be of any type including but not limited to dual piston calipers. In an embodiment, the hub (1) may be fixedly coupled to the rim (3) of the vehicle through a plurality of fasteners (4) and the disc (2) may be rotatably accommodated by the hub (1).
Reference is further made to the Figure 2 which illustrates an exploded view of the hub (1) and the disc (2). The hub (1) may be defined with a first central hole (1c) and the first central hole (1c) may extend along a first axis (A-A). The first axis (A-A) may be defined as an axis that

extends longitudinally or horizontally along the wheel assembly (100). Further, the hub (1) may be defined with a at least one first extension (1a) [hereinafter referred to as the extension]. The first extensions (1a) may be structures that are integral to the hub (1) and the first extensions (1a) may extend outwardly with respect to the first central hole (1c) of the hub (1). In an embodiment, the hub (1) may include four first extensions (1a) that are oriented 90 degrees apart from each other and the first extensions (1a) may be of equal dimensions. In an embodiment, the first extensions (1a) may be defined as elongated structures defined with a free end. Further, each of the first extensions (1a) may be defined with a first hole (1h). The first hole (1h) may be a through hole that extends throughout the width of the first extensions (1a) and the first hole (1h) may be configured to extend along the first axis (A-A) of the wheel assembly (100). In an embodiment, the first hole (1h) may be defined proximal to the free end of each of the first extensions (1a). In an embodiment, each of the first hole (1h) and the first central hole (1c) may be defined with internal threads for receiving fasteners (4) and for engaging with the rim (3) of the vehicle.
Referring to Figure 3, a perspective view of the disc (2) is depicted. The disc (2) may be defined with a second central hole (2c) extending along the first axis (A-A) of the wheel assembly (100). In an embodiment, the radius of the second central hole (2c), measured from the center of the second central hole (2c) may be greater than or equal to the radius of the hub (1), measured from the center of the first central hole (1c) of the hub (1). In an embodiment, the disc (2c) may be made of any material including but not limited to ceramic materials. In an embodiment, the calipers (6) may be configured to engage with a section of the disc (2).
Further, the disc (2c) may be defined with at least one second extensions (2a) [hereinafter referred to as the second extensions]. In an embodiment, the second extensions (2a) may be configured to extend from a circumferential region of the second central hole (2c) of the disc (2). The second extensions (2a) may be configured to extend in a direction that is perpendicular or transverse to the first extensions (1a) of the hub (1). In an embodiment, the second extensions (2a) may be configured to extend along the first axis (A-A) of the wheel assembly (100). In an embodiment, each of the second extensions (2a) may be defined with a profile that is similar to the arc or curvature of the second central hole (2c). In an embodiment, four second extensions (2a) may be defined to the disc (2) and the extensions (2a) may be an integral part of the disc (2). In an embodiment, the angular distance between each of the second extensions (2a) of the disc (2) may be equal to the angular distance between each of the first extensions

(1a) of the hub (1). Furthermore, the free end of the second extension (2a) may be defined with a first surface (2s). The first surface (2s) may be the free end of the disc (2) and the first surface (2s) may be a surface that extends in a direction that is substantially perpendicular to the first ais (A-A) of the wheel assembly (100). In an embodiment the first surface (2s) may be defined with a triangular shape. Further, the first surface (2s) of the second extensions (2a) may be defined with a second hole (2h). The second hole (2h) may extend into the second extension (2a) and the second hole (2h) may extend along the first axis (A-A) of the wheel assembly (100).
The second extensions (2a) may also be defined with a protrusion (2b). The protrusion (2b) may be configured to extend from a free end or outer end of each of the second extensions (2a) and the protrusion (2b) may be an integral part of each of the second extensions (2a). In an embodiment, the protrusion (2b) may extend from an end of the second extension (2a) that lies opposite to the end of the second extension (2a) that is coupled to the disc (2). Furthermore, the protrusion (2b) may extend from an outer end of the second extension (2a) and the protrusion (2b) may be a bordering structure to the second extensions (2a).
The disc (2) may be rotatably coupled with the hub (1). Referring to the Figure 4, the hub (1) and the disc (2) may be oriented in an engaged position (A). The first extension (1a) of the hub (1) may be positioned on the first surface (2s) of the second extension (2a). Further, the first extension (1a) of the hub (1) may be positioned such that the free end of the first extension (1a) abuts the protrusion (2b) of the second extension (2a). The first hole (1h) of the first extension (1a) may be aligned with the second hole (2h) of the second extension (2a) when the hub (1) and the disc (2) are oriented in the engaged position (A). Further, the hub (1) and the disc (2) may be fixedly coupled with each other by fasteners (4) that extend through the first hole (1h) of the first extension (1a) and the second hole (2h) of the second extension (2a). In an embodiment, the positioning of the protrusion (2b) of the second extension (2a) on the first extensions (1a) of the hub (1), ensures that the disc (2) is supported by the hub (1) when the hub (1) and the disc (2) are in the engaged position (A).
In an embodiment, as seen from the Figure 1 and Figure 4, the wheel rim (3) may be defined with a plurality of third holes (3h) [hereinafter referred to as the third holes]. The hub (1) and the disc (2) in the engaged position (A) may be oriented such that the first holes (1h) of the hub (1), the second holes (2h) of the disc (2), and the third holes (3h) of the rim (3) are oriented/aligned together. The fasteners (4) may further be fastened through the first holes (1h),

the second holes (2h), and the third holes (3h) to fixedly couple the wheel rim (3), the hub (1) and the disc (3) together.
Referring to the Figure 5, the hub (1) and the disc (2) being oriented in the disengaged position (B) is depicted. When an operator/mechanic intends to change the disc (2) due to the wear of the disc (2), the operator may remove or loosen the fasteners (4) from the third hole (3h) of the rim (3), the second hole (2h) of the disc (2), and the first hole (1h) of the hub (1). Thus, the rim (3), the disc (2) and the hub (1) are disengaged or disconnected. Further, the operator may rotate the disc (2) in the clockwise direction or the anticlockwise direction to disarrange or dislocate the first extension (1a) of the hub (1) from the first surface (2s) of the second extension (2a) on the disc (2). The first extension (1a) of the hub (1) may be dislodged from the first surface (2s) of the second extension (2a) and the first hole (1h) of the hub (1) may be misaligned/dislocated from the second hole (2h) of the second extension (2a). Rotating the disc (2) in the clockwise direction or the anticlockwise direction with respect to the hub (1) causes the free end of the first extension (1a) form the hub (1) to be dislocated from the protrusion (2b) of the second extension (2a). Thus, the disc (2) and the hub (1) are dislodged from each other. Furthermore, the disc (2) may be removed from the hub (1) by pulling the disc (2) through away from the hub (1) through the second central hole (2c) of the disc (2). Thus, the disc (2) may be easily removed from the hub (1). Furthermore, the operator may align the new disc (2) with the hub (1) by inserting the disc (2) through the hub (1). Subsequently, the operator may rotate the disc (2) in the clockwise direction or the anticlockwise direction for aligning the first extensions (1a) of the hub (1) on the first surfaces (2s) of the second extensions (2a) of the disc (2). The operator may rotate the disc (2) such that the free end of the first extensions (1a) abuts the protrusion (2b) of the second extensions (2a). Further, the fasteners (4) may be fastened through the first holes (1h), the second holes (2h), and the third holes (3h) to fixedly couple the wheel rim (3), the hub (1) and the disc (3).
In an embodiment, the above configuration of the wheel assembly (100) enables the easy removal and replacement of the disc (2) when the disc (2) is worn out. In an embodiment, the disc (2) may be easily removed by loosening the fasteners (4) and removing the rim (3) to access the disc (2). The disc (2) may be removed by merely rotating the disc (2) and the dislocating the disc (2) from the hub (1). Thus, the disc (2) may be easily removed and replaced when the disc (2) is worn out. Thus, the above configuration of the wheel assembly (100) ensures that a small number of components i.e., only the rim (3) has to be disassembled and no

individual disassembly of other components are required for gaining access to the disc (2). Therefore, the process of disassembling/removing the disc (2) in the wheel assembly (100) consumes less time and is an easier process which also reduces the service and labour costs. Furthermore, disassembly and re-assembly of a large number of components for replacing the disc (2) is not required and the same does not result in any errors for assembling of the disc (2).
Equivalents
With respect to the use of substantially any plural and/or singular terms, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth for sake of clarity.
It will be understood by those within the art that, in general, terms used, are generally intended as "open" terms (e.g., the term "including" should be interpreted as "including but not limited to," the term "having" should be interpreted as "having at least," the term "includes" should be interpreted as "includes but is not limited to," etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding the description may contain usage of the introductory phrases "at least one" and "one or more" to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases "one or more" or "at least one" and indefinite articles such as "a" or "an" (e.g., "a" and/or "an" should typically be interpreted to mean "at least one" or "one or more"); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of "two recitations," without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to "at least one of A, B, and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B, and C" would include but not be limited to systems that have A alone, B alone, C alone, A and

B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to "at least one of A, B, or C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B, or C" would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase "A or B" will be understood to include the possibilities of "A" or "B" or "A and B."
While various aspects and embodiments have been disclosed, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated in the description.
Referral numeral:

Referral numeral Description
1 Hub
1a First extension
1c First central hole
1h First hole
2 Disc
2a Second extension
2b Protrusion
2c Second central hole
2h Second hole
2s First surface
3 Wheel rim
3h Third hole
4 Fasteners
5 Wheel
6 Caliper

100 Wheel assembly

We Claim:
1. A wheel assembly (100) for a vehicle, the wheel assembly (100) comprising:
a wheel rim (3);
a hub (1) connected to the wheel rim (3) the hub (1) includes at least one first
extension (1a) extending away from the hub (1);
a disc (2) rotatably receivable by the hub (1), the disc (2) is configured to rotate
between an engaged position (A) and a disengaged position (B), the disc (2) comprises: at least one second extension (2a) extending transversely to the at least one first extension (1a), wherein, the at least one first extension (1a) and the at least one second extension (2a) are aligned to fixedly connect the disc (2) with the hub (1) in the engaged position (A), and the disc (2) in the disengaged position (B), is disconnected from the hub (1) to remove the disc (2) from the hub (1).
2. The assembly (100) as claimed in claim 1, wherein the disc (2) is defined with a second central hole (2c) and the at least one second extension (2a) is defined on the disc (2) along the circumferential region of the second central hole (2c).
3. The assembly (100) as claimed in claim 1, comprising a protrusion (2b) extending from an outer end of the at least one second extension (2a), wherein the protrusion (2b) defines a first surface (2s) on the at least one second extension (2a).
4. The assembly (100) as claimed in claim 1, wherein each of the at least one first extension (1a) is defined with a first hole (1h) and each of the at least one second extension (2a) is defined with a second hole (2h) to connect the at least one first extension (1a) and the at least one second extension (2a).
5. The assembly (100) as claimed in claim 4, wherein the second hole (2h) is defined on the first surface (2s) of the at least one second extension (2a).
6. The assembly (100) as claimed in claim 1, wherein and the first surface (2s) is adapted to receive the at least one first extension (1a) of the hub (1), and a free end of the at least one first extension (1a) abuts the protrusion (2b) of the at least one second extension (2a), when the disc (2) is in the engaged position (A).

7. The assembly (100) as claimed in claim 1, wherein the first hole (1h) of the at least one first extension (1a) is aligned with the second hole (2h) of the at least one second extension (2a), when the disc (2) is in the engaged position (B) to fixedly couple the disc (2) to the hub (1).
8. The assembly (100) as claimed in claim 1, wherein the wheel rim (3) is defined with third holes (3a) and the third holes (3a) are aligned with the first holes (1h) and the second holes (2h), when the disc (2) is in the engaged position (A).
9. The assembly (100) as claimed in claim 1, comprising a plurality of fasteners (4) extending through the first holes (1h), the second holes (2h), and the third holes (3h) to fixedly couple the wheel rim (3), the hub (1) and the disc (3).