FORM 2
THE PATENTS ACT, 1970
[39 of 1970]
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
[See Section 10 and Rule 13]
TITLE: “A SEAT ASSEMBLY FOR A VEHICLE”
Name and Address of the Applicant: TATA MOTORS PASSENGER VEHICLES LIMITED, of Floor 3, 4, Plot-18, Nanavati Mahalaya, Mudhana Shetty Marg, BSE, Fort, Mumbai, Mumbai City, Maharashtra, 400001 India
[Nationality: INDIAN]
The following specification particularly describes the nature of the invention and the manner in which it is to be performed.

TECHNICAL FIELD
Present disclosure, in general, relates to field of automobile engineering. Particularly, but not exclusively, the present disclosure relates to a seat assembly for a vehicle.
BACKGROUND
Automobiles are generally provisioned with seats to accommodate passengers in ergonomical and upright positions, and preferably facing oncoming traffic. Generally, in vehicles such as cars, seats are positioned in a front portion and a rear portion of a cabin of the vehicle. The seats at the front portion are often adjustable in forward and backward directions, while there is no such flexibility for seats at the rear portion of the cabin.
In case of transporting injured, sick or old persons, the ergonomic upright position of existing seats is not suitable. Further, in certain cases, where arrival of Ambulances is time consuming and difficult, existing seating configuration is not suitable to transport such people. Furthermore, if an injured person needs to be transported in a horizontal manner as opposed to an ergonomic upright position, existing seat fixtures may require additional help and man power to assist the injured person to be positioned in a horizontal position on the rear seat. Such effort may further injure the person due to bumping the injured person on portions of the vehicle or in certain cases dropping the person due to improper lifting resulting in further injury or even death, which is undesired.
The present disclosure is directed to overcome one or more limitations stated above. The background section of the present disclosure should not be considered as a limitation of the present disclosure.
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 design are overcome by configuration of a seat assembly as claimed and additional advantages are provided through the provision of such seat assembly as claimed in the present disclosure.
Additional features and advantages are realized through the design of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered a part of the claimed disclosure.
In one non-limiting embodiment of the disclosure, a seat assembly for a vehicle is disclosed. The seat assembly includes a first frame assembly which includes a pair of first rails disposable on a bottom of the vehicle. Further, the first frame assembly includes a first slider slidably mounted on the pair of first rails and configured to slide along a length of the pair of first rails. Furthermore, the first frame assembly includes a first actuator coupled to one of the pair of first rails and the first slider. The first actuator is configured to displace the first slider along the length of the pair of first rails. The seat assembly includes a second frame assembly disposed on the first frame assembly. The second frame assembly includes a pair of second rails disposed on the first slider. The second rails displace along with the displacement of the first slider upon actuation the first actuator. Further, the second rails include a second slider slidably mounted on the pair of second rails and configured to slide along a length of the pair of second rails. Furthermore, the second frame assembly includes a second actuator coupled to one of the pair of second rails and the second slider. The second actuator is configured to displace the second slider along the length of the second rails. Additionally, the seat assembly includes a seat fixture comprising a bottom foam and a rear foam. The bottom foam is mountable on the second slider and is displaceable along with displacement of the first slider and the second slider.
In an embodiment of the disclosure, the first slider displacing along the length of the pair of first rails corresponds to displacement of the first slider along a lateral width of the vehicle.
In an embodiment of the disclosure, the second slider displacing along the length of the pair of second rails corresponds to displacement of the second slider along a longitudinal length of the vehicle.
In an embodiment of the disclosure, the pair of first rails is defined with a groove along the length of the pair of first rails.

In an embodiment of the disclosure, the pair of first rails comprises a first lead screw positioned along the length of the groove and coupled to the first slider.
In an embodiment of the disclosure, the pair of second rails is defined with a groove along the length of the pair of second rails.
In an embodiment of the disclosure, the pair of second rails comprises a second lead screw positioned along the length of the groove and coupled to the second slider.
In an embodiment of the disclosure, the first actuator and second actuator at least one of rotary actuator or linear actuator.
In an embodiment of the disclosure, the first frame assembly comprises at least one first locking unit configured to selectively lock the displacement of the first slider along the length of the pair of first rails.
In an embodiment of the disclosure, the second frame assembly comprises at least one second locking unit configured to selectively lock the displacement of the second slider along the length of the pair of second rails.
In one non-limiting embodiment of the disclosure, a vehicle is disclosed. The vehicle includes a cabin defined with a front section and a rear section. The vehicle also includes a seat assembly disposed in the rear section. The seat assembly includes a first frame assembly which includes a pair of first rails disposable on a bottom of the vehicle. Further, the first frame assembly includes a first slider slidably mounted on the pair of first rails and configured to slide along a length of the pair of first rails. Furthermore, the first frame assembly includes a first actuator coupled to one of the pair of first rails and the first slider. The first actuator is configured to displace the first slider along the length of the pair of first rails. The seat assembly includes a second frame assembly disposed on the first frame assembly. The second frame assembly includes a pair of second rails disposed on the first slider. The second rails displace along with the displacement of the first slider upon actuation the first actuator. Further, the second rails include a second slider slidably mounted on the pair of second rails and configured to slide along a length of the pair of second rails . Furthermore, the second frame assembly includes a second actuator coupled to one of the pair of second rails and the second slider. The second actuator is configured to displace the second slider along the length of the second rails.

Additionally, the seat assembly includes a seat fixture comprising a bottom foam and a rear foam. The bottom foam is mountable on the second slider and is displaceable along with displacement of the first slider and the second slider.
It is to be understood that the aspects and embodiments of the disclosure described above may be used in combination with each other. Several of the aspects and embodiments may be combined to form a further embodiment of the disclosure.
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 characteristic 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:
Fig. 1 illustrates a perspective view of a seat assembly for a vehicle, in accordance with an embodiment of the disclosure.
Fig. 2a-2c illustrates sequential exploded views of the seat assembly of Fig. 1, in accordance with an embodiment of the disclosure.
Fig. 3 illustrates a perspective view of a first actuation mechanism, in accordance with an embodiment of the disclosure.
Fig. 4 illustrates a magnified perspective view of portion ‘A’ of a first frame assembly, depicting connection of a first slider coupled to a first actuation mechanism, in accordance with an embodiment of the disclosure.
Fig. 5 illustrates a magnified view of the first actuation mechanism of Fig. 4, in accordance with an embodiment of the disclosure.

Fig. 6 illustrates a perspective view of a pinion arrangement of the first actuation mechanism of Fig. 4, in accordance with an embodiment of the disclosure.
Fig. 7 illustrates a sectional view of the first actuation mechanism of Fig.6, in accordance with an embodiment of the disclosure.
Fig. 8a-8c depicts various positions of the seat assembly and corresponding positions of a rear foam and a bottom foam of a seat fixture, in accordance with an embodiment of the disclosure.
Fig. 9 illustrates a front view of the seat fixture depicting a locking unit associated with the seat fixture, accordance with an embodiment of the disclosure.
The figures depict 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 structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.
DETAILED DESCRIPTION
The foregoing has broadly outlined the features and technical advantages of the present disclosure in order that the detailed description of the disclosure that follows may be better understood. Additional features and advantages of the disclosure will be described hereinafter which form the subject of the claims 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 structures for carrying out the same purposes of the present disclosure. It should also be realized by those skilled in the art that such equivalent processes do not depart from the scope of the disclosure as set forth in the appended claims. The novel features which are believed to be characteristic of the disclosure, both as to its organization and method of operation, 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. It will be readily understood that the aspects of the present disclosure, as generally described herein, and illustrated in the figures, can be arranged,

substituted, combined, and designed in a wide variety of different configurations, all of which are explicitly contemplated and make part of this disclosure.
The terms “comprises”, “comprising”, or any other variations thereof used in the specification, are intended to cover a non-exclusive inclusion, such that the system comprises a list of features/elements or steps does not include only those features/elements, but may include other features and elements not expressly listed or inherent to such setup or structure. In other words, one or more features/elements in a system proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the system thereof. Also, the terms like “at least one” and “one or more” may be used interchangeably or in combination throughout the description.
Reference will now be made to the exemplary embodiments of the disclosure, as illustrated in the accompanying drawings. Wherever possible, same numerals will be used to refer to the same or like parts. Embodiments of the disclosure are described in the following paragraphs with reference to Figs. 1 to 9, the same element or elements which have same functions are indicated by the same reference signs.
Fig. 1 is illustrative of a seat assembly (100) of a vehicle [not shown in Figs]. As an example, the vehicle may be but not limiting to passenger vehicles, small commercial vehicles and the like. The seat assembly (100) includes a first frame assembly (10) [best seen in Fig. 2a] and a second frame assembly (30) such that the second frame assembly (30) may be disposed on the first frame assembly (10). Further, the seat assembly (100) may be positioned below a seat fixture (40) such that the second frame assembly (30) may be positioned between the first frame assembly (10) and the seat fixture (40).The first frame assembly (10) may be disposed on a bottom portion of the vehicle. That, the first frame assembly (10) may be disposed on a floor of the vehicle. As apparent from Fig. 2a, the first frame assembly (10) includes a pair of first rails (12), which may be positioned on the floor of the vehicle. The pair of first rails (12) may be positioned on the floor of the vehicle such that, the pair of first rails (12) extends along a lateral width of the vehicle. In an embodiment, a length of the pair of first rails may be less than or equal to a the lateral width of the vehicle. As an example, the pair of first rails (12) may be positioned on the floor by fastening or thermally fusing to the floor of the vehicle. In another example, the pair of first rails (12) may be made of materials such as but not limited to metals such as steel, aluminum etc., polymers, wood or composites. The pair of first rails (12) may also include a groove extending throughout its length.

Referring now to Fig. 2a, , the first frame assembly (10) may further include a first slider (15) which may be slidably mounted on the pair of first rails (12) and configured to slide along the length of the pair of first rails (12). The first slider (15) may include but not limiting to a “H” shaped profile. The “H” shaped first slider (15) may include two strips (19a), each positioned parallelly on and a connecting strip (19b) connecting the two strips (19a). In an embodiment, the two strips (19a) may be joined by the connecting strip (19b) to form other shapes than the “H-shape”. The first frame assembly (10) may also include a first actuator (16) coupled to each of the pair of first rails (12) and first slider (15). As an example, the first actuator (16) is at least one of a rotary actuator or a linear actuator. The first actuator (16) may be configured to displace the first slider (15) along the length of the pair of first rails (12).
Referring now to Fig. 3, the first frame assembly (10) may include a first actuation mechanism (18) configured to assist sliding motion of the first slider (15) along the length of the pair of first rails (12). In an embodiment, the first actuation mechanism (18) may be at least one of lead screw operated mechanism or a rack and pinion mechanism. Embodiments of the present disclosure may relate to a rack and pinion mechanism as an example for the first actuation mechanism (18). However, the same should not be construed as a limitation, rather the example is provided for ease of illustration of working of the first actuation mechanism. In an illustrative embodiment [as seen in Fig. 3], the first frame assembly (10) may include a rack and pinion mechanism positioned flush with the groove of the pair of first rails (12). The first actuation mechanism (18) may include a rack (46) which may be coupled to at least one of the walls of the groove such that the rack (46) defining gear teeth may face towards a central portion of the groove. In an embodiment, two racks (46) may be positioned along the length of each of the pair of first rails (12) and positioned along opposite walls of the groove such that each of the rack (46) defining gear teeth may face each other. Furthermore, the at least one of the rack (46) may be coupled to the first actuator (16). The actuation of the first actuator (16) may enable displacement of the rack (46) in a linear direction corresponding to the length of the pair of first rails (12). Additionally, the pinion (44) of the rack and pinion mechanism may be defined with a pinion shaft (45) towards a first end (49a) [best seen in Fig. 5] of the pinion (44) and a curved profile towards the second end (49b) [best seen in Fig. 5] of the pinion (44). In an embodiment, the pinion (44) may be defined with gear teeth and configured to mesh with the at least one rack (46) of the rack (46) and pinion mechanism. In another embodiment, the grooves may also include guide rods [best seen in Fig. 7] positioned below the rack (46) and

configure to guide the curved profile of the pinion (44) along the length of the pair of guide rails.
Referring to Fig. 4, the first frame assembly (10) may include a shell (43) mounted around the pinion shaft (45) such that the pinion shaft (45) and the shell (43) are in frictionless contact during rotational movement. The shell (43) may be defined with a geometric profile such as but not limited to cylinder, cube, cuboid etc. The shell (43) may be defined with an outer diameter and an inner hole. In an embodiment, the pinion shaft (45) may be rotatably coupled to the shell (43). The inner hole of the shell (43) may be in frictionless contact with the pinion shaft (45) in rotational direction. In an embodiment, the inner hole and the pinion shaft (45) may each be defined with a clearance tolerance to allow easy and frictionless contact between the pinion shaft (45) and the inner hole. In an embodiment, the pinion shaft (45) and the inner hole may each be lubricated to achieve frictionless contact in rotational direction between the pinion shaft (45) and the inner hole. Further, the shell (43) may be coupled to the first slider (15) as shown in Fig. 6. The shell (43) and the first slider (15) may be rigidly coupled to each other by means of thermal fusion or adhesion. When the first actuator (16) is operated, the rack (46) coupled to the first actuator (16) may be displaced in a linear direction as per user requirement. The pinion (44) meshed with the rack (46) may start to rotate and displace in a direction opposite to the direction of displacement of the rack (46) along the length of the guide rods. The pinion shaft (45) may rotate within the inner hole of the shell (43) in a frictionless manner. However, the displacement of the pinion (44) along a linear direction may displace the pinion shaft (45) and thereby enforce a line contact between the pinion shaft (45) and the hole. Such line contact between the pinion shaft (45) and the hole may exert sufficient force on the first slider (15) to displace the first slider (15) along the length of the pair of first rails (12).
In an embodiment,, the first frame assembly (10) may include rollers positioned in between the first slider (15) and the pair of first rails (12) to assist smooth and frictionless movement of the first slider (15) over the pair of first rails (12) during displacement of the first slider (15) in X-direction.
Now referring to Fig. 2b, the seat assembly (100) may include a base plate (17) coupled to the first slider (15). The base plate (17) may be at least one of thermally fused or mechanically fastened to the slider. In an embodiment, the slider may describe a geometric profile such as but not limited to square, rectangle, circular etc. or any other shape so as to distribute load from a seat fixture (40) uniformly across the length of the pair of first rails (12). In an embodiment,

the base plate (17) may be made of material such as but not limited to metals, alloys, polymers, composite etc.
Reference will now be made to the second frame assembly (30). The second frame assembly (30) [best seen in Fig. 1 and Fig 2c] may be disposed on the first frame assembly (10) i.e., over the base plate (17). The second frame assembly (30) may include a pair of second rails (32) disposed on the base plate (17). The pair of second rails (32) may extend along a longitudinal length of the vehicle. The longitudinal length of the pair of second rails (32) is less than or equal to the lateral width of the seat fixture (40) of the vehicle. The pair of second rails (32) may also include a groove extending throughout its length.
Referring now to Fig. 2c, the second frame assembly (30) may further include a second slider (35) which may be slidably mounted on the pair of second rails (32) and configured to slide along the length of the pair of second rails (32). The second slider (35) may include but not limiting to a “H” shape. The “H” shaped second slider (35) may include two strips (39a), each positioned parallelly on and a connecting strip (39b) connecting the two strips (39a)the second frame assembly (30) may also include a second actuator (36) coupled to each of the pair of second rails (32) and second slider (35). As an example, the second actuator (36) is at least one of a rotary actuator or a linear actuator. The pair of second rails (32) may displace along with the displacement of the first slider (15) upon actuation of the second actuator (36) by virtue of coupling between the base plate (17) and the first slider (15). The second actuator (36) may be configured to displace the second slider (35) along the length of the pair of second rails (32). In an embodiment, the second actuator (36) may be a stepper motor and defined with a motor shaft. Further, the second frame assembly (30) may include a second actuation mechanism (38) configured to assist sliding motion of the second slider (35) along the length of the pair of second rails (32).
Embodiments of the second actuation mechanism (38) may be similar to the first actuation mechanism (18), features of which are descried henceforth. In an embodiment, the second actuation mechanism (38) may be at least one of lead screw operated mechanism or a rack and pinion mechanism. Embodiments of the present disclosure may relate to a rack and pinion mechanism as an example for the first actuation mechanism (38). However, the same should not be construed as a limitation, as other type of mechanism may be used as the first actuation mechanism (38). In an illustrative embodiment, [as seen in Fig. 3], the second frame assembly

(30) may include a rack and pinion mechanism positioned flush with the groove of the pair of second rails (32). The racks (46) may be coupled to at least one of the walls of the groove such that the rack (46) defining gear teeth may face towards a central portion of the groove. In an embodiment, two racks (46) may be positioned along the length on the length of each of the pair of second rails (32) and positioned along opposite walls of the groove such that each of the rack (46) defining gear teeth may face each other. Furthermore, the at least one the racks (46) may be coupled to the second actuator (36).The actuation of the second actuator (36) may enable displacement of the rack (46) in a linear direction corresponding to the length of the pair of second rails (32). Additionally, the pinion (44) of the rack and pinion mechanism may be defined with a pinion shaft (45) towards a second end (49b) [best seen in Fig. 5] of the pinion (44) and a curved profile towards the second end (49b) [best seen in Fig. 5] of the pinion (44). In an embodiment, the pinion (44) may be defined with gear teeth and configured to mesh with the at least one rack (46) of the rack (46) and pinion mechanism. The grooves may also include guide rods [best seen in Fig. 7] positioned below the rack (46) and configure to guide the curved profile of the pinion (44) along the length of the pair of guide rails.
Referring to Fig. 4, the second frame assembly (30) may include a shell (43) mounted around the pinion shaft (45) such that the pinion shaft (45) and the shell (43) are in a frictionless contact during rotational movement. The shell (43) may be defined with a geometric profile such as but not limited to cylinder, cube, cuboid etc. The shell (43) may be defined with an outer diameter and an inner hole. In an embodiment, the pinion shaft (45) may be rotatably coupled to the shell (43). The inner hole of the shell (43) may be in frictionless contact with the pinion shaft (45) in rotational direction. In an embodiment, the inner hole and the pinion shaft (45) may each be defined with a clearance tolerance to allow easy and frictionless contact between the pinion shaft (45) and the inner hole. In an embodiment, the pinion shaft (45) and the inner hole may each be lubricated to achieve frictionless contact in rotational direction between the pinion shaft (45) and the inner hole. Further, the shell (43) may be coupled to the second slider (35) as shown in Fig. 6. the shell (43) and the second slider (35) may be rigidly coupled to each other by means of thermal fusion or adhesion. When the second actuator (36) is operated, the rack (46) coupled to the motor shaft may be displaced in a linear direction as per user requirement. The pinion (44) meshed with the rack (46) may start to rotate and displace in a direction opposite to the direction of displacement of the rack (46) along the length of the guide rods. The pinion shaft (45) may rotate within the inner hole of the shell (43) in a frictionless manner. However, the displacement of the pinion (44) along a linear direction may displace

the pinion shaft (45) and thereby enforce a line contact between the pinion shaft (45) and the inner hole. Such line contact between the pinion shaft (45) and the inner hole may exert sufficient force on the second slider (35) to displace the second slider (35) along the length of the pair of second rails (32) along the longitudinal length of the vehicle. Furthermore, the second slider (35) may be coupled to a seat fixture (40) which includes a rear foam (42) and a bottom foam (41). The slider may be fastened to the bottom foam (41) to prevent relative motion between the bottom foam (41) and the rear foam (42) during movement of the vehicle. Additionally, the first frame assembly (10) may include rollers positioned in between the second slider (35) and the repair of second rails (32) to assist smooth and frictionless movement of the second slider (35) over the pair of second rails (32) during displacement of the second slider (35) in longitudinal length of the vehicle.
Referring to Fig. 8a-8c, the figures describe three invariant positions of the seat fixture (40) relative to the displacement of the first slider (15) and second slider (35). In an embodiment, the three invariant positions of the seat fixture (40) may include an ideal position [as seen in Fig. 8a], a front position [as seen in Fig. 8b] and a side position [as seen in Fig. 8c]. Fig. 8a describes an ideal position of the slider assembly and corresponding position of the seat fixture (40) which includes the bottom foam (41) and the rear foam (42). In an ideal position [as seen in Fig. 8a] there is no relative displacement between the rear foam (42) and the bottom foam (41). Further, Fig. 8b describes a front position of the seat fixture (40). During operation of the slider assembly, upon actuation of the second actuator (36), the second slider (35) may move in a forward direction i.e., in YY’ direction [as seen in Fig. 8b]. The YY’ direction may correspond a longitudinal length of the vehicle, thereby resulting in displacement of the bottom foam (41) of the seat fixture (40) relative to the rear foam (42). Such displacement of the bottom foam (41) may be used to sufficiently position the bottom foam (41) of the seat fixture (40) proximal to a door of the vehicle to enable unrestricted movement of the bottom foam (41) from an inside of the vehicle. Furthermore, Fig. 3c discloses the side position of the seat fixture (40). When the first actuator (16) is actuated, the first slider (15) may be displaced in the XX’ direction [As seen in Fig.3c]. The XX’ direction may correspond to a lateral width of the vehicle. Such displacement of the first slider (15) may results in displacement of the second pair of rails (32) and by association the bottom foam (41) in the XX’-direction. The bottom foam (41) of the seat fixture (40) may be displaced at most to about 70% of the length of the pair of first rails (12) outside the vehicle. A patient or an injured person may be easily lowered/seated on the bottom foam (41) of the seat fixture (40) and further the first actuator

(16) and second actuator (36) may be sequentially operated to position the patient or injured person in the ideal position of the seat fixture (40).
Fig. 9 illustrates a locking unit (50) positioned proximal between the rear foam (42) and the bottom foam (41). The locking unit (50) may be configured to restrict relative movement between the rear foam (42) and the bottom foam (41) at an ideal position of the seat fixture (40). The locking unit (50) may be include a locking frame configured to wrap around the pinion (44) associated with the second frame assembly (30) to restrict displacement of the seat fixture (40). In an embodiment, the locking unit (50) may be configure to restrict displacement of the bottom foam (41) in YY’-direction relative to the rear foam (42).
Embodiments of the present disclosure enable easy access to the seat fixture (40) of a vehicle for an injured or sick patient and thereby provide suitable transportation for hard to access geographical locations or even in emergency situations to reach hospitals safely and quickly. Further, the seat assembly (200) of the present disclosure may be retrofittable to existing vehicle to achieve the effect of ease of entry and exit of passengers to and from the vehicle. Furthermore, first frame assembly (10) and the second frame assembly (30) of the present disclosure may be positioned within any vehicle such as but not limiting to passenger vehicles, small commercial vehicles, without displacing components of the vehicle. The displacement of the second slider (35) may assist in aligning the bottom foam (41) of vehicle proximal to the vehicle door to allow unrestricted movement of the bottom foam (41) from an inside of the vehicle. The bottom foam (41) of the seat fixture (40) may be displaced at most to about 70% of the length of the pair of first rails (12) outside the vehicle to accommodate a passenger easily within the vehicle.
EQUIVALENTS
With respect to the use of substantially any plural and/or singular terms herein, 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 herein for sake of clarity.
It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) 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 following appended claims 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, claims, 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.”
In addition, where features or aspects of the disclosure are described in terms of Markush groups, those skilled in the art will recognize that the disclosure is also thereby described in terms of any individual member or subgroup of members of the Markush group.

While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.

Referral numerals:

Referral Numerals Description
100 Seat assembly
10 First frame assembly
12 First rails
15 First slider
16 First actuator
17 Base plate
18 First actuation mechanism
19a, 39a Two strips
19b, 39b Connecting strip
30 Second frame assembly
32 Second rails
35 Second slider
36 Second actuator
38 Second actuation mechanism
40 Seat fixture
41 Bottom foam
42 Rear foam
43 Shell
44 Pinion
45 Pinion shaft
46 Rack
49a First end
49b Second end
50 locking unit

We Claim:
1. A seat assembly (100) for a vehicle, the assembly comprising:
a first frame assembly (10) comprising:
a pair of first rails (12) disposable on a bottom portion of the vehicle;
a first slider (15) slidably mounted on the pair of first rails (12) and configured to slide along a length of the pair of first rails (12); and
a first actuator (16) coupled to one of the pair of first rails (12) and the first slider (15), the first actuator (16) is configured to displace the first slider (15) along the length of the pair of first rails (12);
a second frame assembly (30) disposed on the first frame assembly (10), the second frame assembly (30) comprising:
a pair of second rails (32) disposed on the first slider (15), the second rails (32) displace along with the displacement of the first slider upon actuation the first actuator;
a second slider (35) slidably mounted on the pair of second rails (32) and configured to slide along a length of the pair of second rails (32); and
a second actuator (36) coupled to one of the pair of second rails (32) and the second slider (35), the second actuator (36) is configured to displace the second slider (35) along the length of the second rails (32);
a seat fixture (40) comprising a bottom foam (41) and a rear foam (42), wherein the bottom foam (41) is mountable on the second slider (35) and is displaceable along with displacement of the first slider (15) and the second slider (35).
2. The seat assembly (100) as claimed in claim 1, wherein the first slider (15) displacing along the length of the pair of first rails (12) corresponds to displacement of the first slider along a lateral width of the vehicle.
3. The seat assembly (100) as claimed in claim 1, wherein the second slider (35) displacing along the length of the pair of second rails (32) corresponds to displacement of the second slider (35) along a longitudinal length of the vehicle.
4. The seat assembly (100) as claimed in claim 1, wherein the pair of first rails (12) is defined with a groove along the length of the pair of first rails (12).

5. The seat assembly (100) as claimed in claim 4, wherein the pair of first rails (12) comprises a first actuation mechanism (18) positioned along the length of the groove and coupled to the first slider (15).
6. The seat assembly (100) as claimed in claim 1, wherein the pair of second rails (32) is defined with a groove along the length of the pair of second rails (32).
7. The seat assembly (100) as claimed in claim 6, wherein the pair of second rails (32) comprises a second actuation mechanism (38) positioned along the length of the groove and coupled to the second slider (35).
8. The seat assembly (100) as claimed in claim 5 and claim 7, wherein the first actuation mechanism (18) and second actuation mechanism (38) is at least one of lead screw operated mechanism or a rack and pinion mechanism.
9. The seat assembly (100) as claimed in claim 1, wherein the first actuator (16) and second actuator (36) at least one of a rotary actuator or a linear actuator.
10. The seat assembly (100) as claimed in claim 1, wherein the first frame assembly (10) comprises at least one locking unit (50) configured to selectively lock the displacement of the second slider (35) along the length of the pair of first rails (12).
11. A vehicle comprising:
a cabin defined with a front section and a rear section;
a seat assembly (100) disposed in the rear section, the seat assembly (100) comprising:
a first frame assembly (10) comprising:
a pair of first rails (12) disposable on a bottom portion of the vehicle;
a first slider (15) slidably mounted on the pair of first rails (12) and configured to slide along a length of the pair of first rails (12); and
a first actuator (16) coupled to one of the pair of first rails (12) and the first slider (15), the first actuator (16) is configured to displace the first slider (15) along the length of the pair of first rails (12); a second frame assembly (30) disposed on the first frame assembly (10), the second frame assembly (30) comprising:

a pair of second rails (32) disposed on the first slider (15), the second rails (32) displace along with the displacement of the first slider upon actuation the first actuator;
a second slider (35) slidably mounted on the pair of second rails (32) and configured to slide along a length of the pair of second rails (32); and
a second actuator (36) coupled to one of the pair of second rails
(32) and the second slider (35), the second actuator (36) is configured to
displace the second slider (35) along the length of the second rails (32);
a seat fixture (40) comprising a bottom foam (41) and a rear foam (42),
wherein the bottom foam (41) is mountable on the second slider (35) and is
displaceable along with displacement of the first slider (15) and the second
slider (35).