FORM 2
THE PATENT ACT 1970 (as amended)
[39 OF 1970]
&
The Patents Rules, 2003
COMPLETE SPECIFICATION
[See Section 10 and Rule 13]
TITLE: “AN ADJUSTABLE TWIST BEAM OF A VEHICLE AND
METHOD THEREOF”
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 nature of the invention and the manner in which it is to be performed.

TECHINCAL FIELD
Embodiments of the present disclosure relates to a twist beam of a vehicle. More particularly, embodiments relates to an adjustable twist beam of a vehicle in which various elements of the twist beam can be adjusted depending on the vehicle requirement.
BACKGROUND OF DISCLOSURE
Presently, there are many types of rear suspension of the passenger cars classified into rigid axle suspension, independent suspension and semi independent suspension. Of all the types of suspension, semi independent suspension is most widely used vehicles. Twist beam or torsion beam suspension is a semi independent suspension. Many Other Engineering Manufactures (OEM’s) try to commonise the various underbody components of existing vehicle into the new vehicles to reduce the cost of manufacturing and increase the profitability. But this carryover of the parts to the new vehicle should not deteriorate the performance of the part and the performance of the vehicle when fitted on the new vehicle. A twist beam suspension which is designed to perform in a particular vehicle may not perform to the same level in the other vehicle. Also twist beam cannot be packaged as it is in the new vehicle due to the different wheel base and track of the vehicle.
The presently available twist beam of a vehicle is rigid and it is welded to the chassis of the vehicle. The twist beam designed for one vehicle cannot be used for other vehicle because of different wheel base and track of the vehicle. Further, in presently available twist beam if there is slight change in the wheel base entire beam is to be newly designed.
Further, in the presently twist beam angle of pivot bracket adapter bracket cannot be changed with respect to change in axis of trailing arm of the twist beam. And also longitudinal movement of cross beam is not possible.
Further, in the presently available twist beam cannot accommodate stabilizer bar of variable diameter.

In light of forgoing discussion, there is a need for an adjustable twist beam to overcome the limitations stated above.
STATEMENT OF THE DISCLOSURE
Accordingly the present disclosure provides an adjustable twist beam (100) of a vehicle comprising; a pivot bracket adapter plate (101) mounted on a chassis of the vehicle, wherein said plate (101) comprises plurality of holes (101a and 101b) at predetermined locations on its surface (101c); a pivot bracket (102) mounted on the pivot bracket adapter plate (101), wherein said pivot bracket (102) comprises plurality of holes (102a and 102b) on its top surface (102c), and said holes (102a and 102b) matches with the holes (101a and 101b) of the plate (101) for fastening the pivot bracket (102) with the plate (101) at predetermined angle; a trailing arm adapter (103) pivoted to the pivot bracket (102) side wall (102e), wherein said trailing arm adapter (103) comprises a sleeve (103a) at its end and plurality of holes (103b and 103c) on its surface (103d), and said trailing arm adapter (103) is fastened to the pivot bracket (102) through holes (102d) and sleeve (103a); and a trailing arm (104) connected to the trailing arm adapter (103), wherein said trailing arm comprises plurality of holes (104a and 104b) on its surface (104c), and said holes (104a and 104b) matches with the holes (103b and 103c) for fastening the trailing arm (104) with the trailing arm adapter (103) at predetermined angle, and also provides for a method of adjusting an angle of the twist beam (100), said method comprising acts of; adjusting an angle of trailing arm adapter bracket (103) by matching a holes (103b and 103c) of the trailing arm adapter bracket (103) with holes (104a and 104b) of a trailing arm (104); and adjusting an angle of pivot bracket (102) with respect to change in angle of the trailing arm adapter bracket (103) by matching holes (102a and 102b) of the pivot bracket (102) with holes (101a and 101b) of a pivot bracket mounting adapter (101) which is mounted to the chassis of the vehicle, and also provides for an adjustable twist beam (100) of a vehicle comprising; a trailing arm (104) connected to a chassis of the vehicle, wherein said trailing arm (104) comprises plurality of holes (104d) on its side face; a first plate (106) joined to the trailing arm (104) on its top edge, wherein said plate (106) comprises tooth (106a) at its end; and a second plate (107) mounted on side face of the trailing arm (104), wherein said plate (107) comprises

tooth (107a) on its top surface matching the tooth (106a) of the first plate (106) and plurality of slots (107b) on its face for fastening the second plate (107) with the trailing arm (104), and also provide for a method of adjusting twist beam in a longitudinal direction, said method comprising acts of; moving a second plate (107) on a trailing arm (104) to a predetermined distance; engaging tooth (107a) of the second plate (107) with tooth (106a) of a first plate (106); and fastening a second plate (107) to the trailing arm (104) through a slots (107b) and holes (104d).
OBJECTS OF THE DISCLOSURE
One object of the present disclosure is to provide a master twist beam that can be used as an instrument to quickly fix the best configuration of the elements of the twist beam to give the best suspension performance for the vehicle.
One object of the present disclosure is to commonise the twist beam between different vehicles and maintain the best performance on each of the vehicle.
One object of the present disclosure is to provide the twist beam with varying inclination of the pivot mounting bracket with the longitudinal axis of the vehicle.
One object of the present disclosure is to provide a mechanism for changing the location of the cross beam in forward and backward direction.
One object of the present disclosure is to provide a mechanism for changing the stabilizer bar diameter inside the cross beam with minimum number of changes in parts.
One object of the present disclosure is to provide the movement of the spring seat in forward and backward direction of the vehicle to suit to the different Body In White (BIW) of different vehicles on which the said twist beam is intended to be fitted.
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 complete assembly of an adjustable twist beam.
FIG. 2 illustrates enlarged view of twist beam assembly having pivot bracket adapter plate, pivot bracket, trailing arm adapter and trailing arm.
FIG. 3 illustrates pivot bracket of the present disclosure.
FIG. 4 illustrates trailing arm adapter of the present disclosure.
FIG. 5 illustrates trailing arm of the present disclosure.
FIG. 6 illustrates enlarged view of twist beam assembly having pivot bracket adapter plate, pivot bracket, trailing arm adapter and trailing arm which is turned to a predetermined angle with respect to longitudinal axis of vehicle.
FIG. 7 illustrates assembly of cross beam and stabilizer bar with the second plate.
FIG. 8illustrates stabilizer bar adapter of the present disclosure.
FIG. 9 illustrates spring seat of the present disclosure.
FIG. 10 illustrates assembly of spring seat, damper mounting bracket and wheel mounting bracket with the trailing arm.
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
In the following detailed description, reference is made to the accompanying figures, which form a part hereof. In the figures, similar symbols typically identify similar components, unless context dictates otherwise. The illustrative embodiments described in the detailed description, figures, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented herein. 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.
This disclosure is drawn, inter-alia, to a twist beam of a vehicle. More particularly, embodiments relates to an adjustable twist beam of a vehicle in which various elements of the twist beam can be adjusted depending on the vehicle requirement.
One embodiment of the present disclosure provides an adjustable twist beam (100) of a vehicle comprising; a pivot bracket adapter plate (101) mounted on a chassis of the vehicle, wherein said plate (101) comprises plurality of holes (101a and 101b) at predetermined locations on its surface (101c); a pivot bracket (102) mounted on the pivot bracket adapter plate (101), wherein said pivot bracket (102) comprises plurality of holes (102a and 102b) on its top surface (102c), and said holes (102a and 102b) matches with the holes (101a and 101b) of the plate (101) for fastening the pivot bracket (102) with the plate (101) at predetermined angle; a trailing arm adapter (103) pivoted to the pivot bracket (102) side wall (102e), wherein said trailing arm adapter (103) comprises a sleeve (103a) at its end and plurality of holes (103b and 103c) on its surface (103d), and said trailing arm adapter (103) is fastened to the pivot bracket (102) through holes (102d) and sleeve (103a); and a trailing arm (104) connected to the trailing arm adapter (103), wherein said trailing arm comprises plurality of holes (104a and 104b) on its surface (104c), and said holes (104a and 104b) matches with the holes (103b and 103c) for

fastening the trailing arm (104) with the trailing arm adapter (103) at predetermined angle.
In one embodiment of the present disclosure, the pivot bracket adapter plate (101) is mounted on the chassis by a method selected from atleast one of welding, brazing, fusing, fastening and any other method which serve the purpose.
In one embodiment of the present disclosure, the pivot bracket (102) is mounted on the pivot bracket adapter plate (101) at the predetermined angle with respect to longitudinal axis of vehicle.
In one embodiment of the present disclosure, said predetermined angle of the pivot bracket (102) can be varied between 0 degree to 25 degrees in the steps of 5 degrees with respect to longitudinal axis of the vehicle.
In one embodiment of the present disclosure, said sleeve (103a) comprises a bush inserted therein for fastening the pivot bracket (102).
In one embodiment of the present disclosure, said adapter plate (101), pivot bracket (102), trailing arm adapter bracket (103) and trailing arm (104) are connected with the help of plurality of fasteners (105) selected from at least one of nuts and bolts, screws, rivets, socket head cap screws, hex lobular screws and any other fastener which serve the purpose.
The present disclosure is also in relation with a method of adjusting an angle of the twist beam (100), said method comprising acts of; adjusting an angle of trailing arm adapter bracket (103) by matching a holes (103b and 103c) of the trailing arm adapter bracket (103) with holes (104a and 104b) of a trailing arm (104); and adjusting an angle of pivot bracket (102) with respect to change in angle of the trailing arm adapter bracket (103) by matching holes (102a and 102b) of the pivot bracket (102) with holes (101a and 101b) of a pivot bracket mounting adapter (101) which is mounted to the chassis of the vehicle.

In one embodiment of the present disclosure, the trailing arm adapter bracket (103) is fastened with the trailing arm (104) via holes (103b and 104a) and (103c and 104b) wherein the holes (103b and 104a) acts as hinge about which trailing arm adapter is turned and fastened at desired angle through holes (103c and 104b).
In one embodiment of the present disclosure, angle of the pivot bracket (102) and the trailing arm adapter bracket (103) is changed with respect to longitudinal axis of the vehicle, by adjusting angle of the pivot bracket (102) between 0 degree to 25 degrees in the steps of 5 degrees with respect to change in angle of the trailing arm adapter bracket (103).
One embodiment of the present disclosure provides an adjustable twist beam (100) of a vehicle comprising; a trailing arm (104) connected to a chassis of the vehicle, wherein said trailing arm (104) comprises plurality of holes (104d) on its side face; a first plate (106) joined to the trailing arm (104) on its top edge, wherein said plate (106) comprises tooth (106a) at its end; and a second plate (107) mounted on side face of the trailing arm (104), wherein said plate (107) comprises tooth (107a) on its top surface matching the tooth (106a) of the first plate (106) and plurality of slots (107b) on its face for fastening the second plate (107) with the trailing arm (104).
In one embodiment of the present disclosure, said second plate (107) comprises a protruded portion (107c) for mounting a cross beam (108) and a stabilizer bar adapter (109).
In one embodiment of the present disclosure, the stabilizer bar adapter (109) comprises a conical surface (109a) for mounting a variable diameter stabilizer bar (110).
In one embodiment of the present disclosure, a plate (113) is provided perpendicularly to the second plate (107) at its bottom for supporting suspension members of the vehicle.
In one embodiment of the present disclosure, a damper mounting bracket (111) is connected to the second plate (107) for mounting a damping member.

In one embodiment of the present disclosure, a wheel mounting bracket (112) is connected to the trailing arm (104) for mounting wheels of the vehicle.
The present disclosure is also in relation with the a method of adjusting twist beam in a longitudinal direction, said method comprising acts of; moving a second plate (107) on a trailing arm (104) to a predetermined distance; engaging tooth (107a) of the second plate (107) with tooth (106a) of a first plate (106); and fastening a second plate (107) to the trailing arm (104) through a slots (107b) and holes (104d).
In one embodiment of the present disclosure, a tooth (107a) of second plate (107) engages with a tooth (106a) of a first plate (106) to achieve displacement of second plate (107) in longitudinal direction.
In one embodiment of the present disclosure, the engagement of tooth (107a) with tooth (106a) facilitate movement of the second plate (107) to a finite distance in longitudinal direction.
In one embodiment of the present disclosure, slots (107b) of the second plate (107) facilitates in spacing the holes (104d) at a predetermined distance
FIG. 1 is exemplary embodiment illustrating a complete assembly of an adjustable twist beam (100). The said adjustable twist beam (100) comprises a pivot bracket adapter plate (101) which will be mounted on a vehicle chassis and said adapter plate (101) comprises plurality of holes (101a and 101b) at predetermined locations on its top surface (101c). A pivot bracket (102) which is mounted below the pivot bracket adapter plate (101) at predetermined angle. A trailing arm adapter (103) is pivoted to the pivot bracket (102) using a fastener (105). A trailing arm (104) connected to the trailing arm adapter (103) through the holes (103b and 104a) and (103c and 104b) using the fastener. A pair of first plates (106) are joined to the trailing arm (104) and said first plates (106) comprises a tooth (106a) at its one end. Plurality of second plates (107) are mounted on side face of the trailing arm (104) and one of the second plates (107) supports cross beam (108). In another second plate (107) a plate (113) is provided perpendicularly to a second plate

(107) for supporting a suspension member of the vehicle. A wheel mounting bracket (112) is connected to the trailing arm (104) for supporting wheels.
FIG.2-FIG.5 are exemplary embodiments illustrates an adjustable twist beam comprising pivot bracket adapter plate (101), pivot bracket (102), trailing arm adapter (103) and trailing arm (104). A pivot bracket adapter plate (101) is joined to the vehicle chassis and said pivot bracket adapter plate (101) comprises plurality of holes (101a and 101b) at predetermined locations on its top surface (101c). FIG. 3 shows a pivot bracket (102) mounted to the pivot bracket adapter plate (101), and said pivot bracket consists of plurality of holes (102a and 102b). The holes (102a and 102b) matches with the holes (101a and 101b) of the pivot bracket adapter plate (101) to mount the pivot bracket (102) at predetermined angle with respect to longitudinal axis of the vehicle. The pivot bracket (102) comprises another set of holes (102d) on its side faces (102e). A trailing arm adapter (103) is connected to the pivot bracket (102). FIG.4 shows a trailing arm adapter comprises a sleeve (103a) at its end and plurality of holes (103b and 103c) on its top surface (103d). The trailing arm adapter (103) is connected to the pivot bracket (102) using a fastener (105) through the holes (102d) and the sleeve (103a). A trailing arm (104) is connected to the trailing arm adapter (103) at predetermined angle. FIG. 5shows a trailing arm (104) comprises plurality of holes (104a and 104b) on its top surface (104c). The trailing arm adapter (103) is mounted over the trailing arm (104) via holes (104a and 103b) and (104b and 103c) through fasteners. The fastener mounted at the holes (103b and 104a) acts as hinge about which the trailing arm adapter (103) can pivot to a desired angle and gets fastened at the desired angle through the fastening at holes (103c and 104b). The holes (104b) on the trailing arm (104) are arranged such that by matching the suitable hole (103c) with the hole (104b) the desired angle of the trailing arm adapter (103) is obtained.
FIG. 6 is an exemplary embodiment which illustrates a twist beam (100) assembly having pivot bracket adapter plate (101), pivot bracket (102), trailing arm adapter (103) and trailing arm (104) which is turned to a predetermined angle with respect to longitudinal axis of vehicle. The trailing arm adapter (103) is turned into a predetermined angle by hinging the trailing arm adapter at the holes (103b and 104a). After turning to a

predetermined angle the trailing arm adapter is fastened at that angle through the holes (103c and 104b). Since the pivot bracket (102) is pivoted with the trailing arm adapter
(103) the pivot bracket (102) also turns to the same angle as that of trailing arm adapter
(103). Hence, holes (102a and 102b) of the pivot bracket (102) matched with holes (101a
and 101b) of the pivot bracket adapter plate (101) to mount the pivot bracket (102) at
predetermined angle.
In one embodiment of the present disclosure, the pivot bracket (102) holes (102a and 102b) and the holes (101 a and 101b) on the pivot bracket adapter (101) are arranged such that they align with each other at any set angle between 0° and 25° in steps of 5°. The said pivot bracket (102) can be turned with respect to pivot bracket adapter (101) to angle as per the requirement.
In one embodiment of the present disclosure, the fasteners can be selected from a group but not limited to nuts and bolts, screws, hex lobular screws, socket head cap screws, rivets and any other fasteners which serve the purpose.
In one embodiment of the present disclosure, a bush is inserted inside the sleeve (103a) for fastening the pivot bracket (102) with the trailing arm adapter (103).
In one embodiment of the present disclosure, angle of the pivot bracket (102) is varied with the change in angle of the trailing arm adapter bracket (103). The said trailing arm
(104) can be mounted at a predetermined angle with respect to longitudinal axis of the
vehicle.
FIG. 7 and FIG. 8 are exemplary embodiments illustrates assembly of cross beam (108), stabilizer bar (110), with the trailing arm (104) of the twist beam (100). The said assembly comprises a trailing arm (104) having plurality of holes (104d) on its side face. A first plate (106) joined to the trailing arm (104) on its top edge. And said first plate (106) comprises tooth (106a) in its end. A second plate (107) mounted on the side face of the trailing arm (104) and said second plate (107) comprises tooth (107a) on its top edge for engaging with the tooth (106a) of the first plate (106). Plurality of slots (107b) are provided on face for fastening the second plate (107) with the trailing arm (104). FIG.6

shows a second plate (107) comprises a protruded portion (107c) for mounting a cross beam (108) of the twist beam (100). Said cross beam (108) of predetermined shape is joined to the second plate (107) of the trailing arm (104) by predetermined process. The protruded portion (107c) comprises plurality of holes for mounting a stabilizer bar adapter (109). The stabilizer bar adapter (109) comprises a conical edge (109a) on which a stabilizer bar (110) is mounted.
In one embodiment of the present disclosure, the cross beam (108) is joined to the second plate (107) by a process selected from a group but not limited to welding, brazing, fusing and any other process which serve the purpose.
In one embodiment of the present disclosure, the tooth (107a) of the second plate (107) engages with the tooth (106a) of first plate (106) to provide displacement to the cross beam (108) in longitudinal direction. And the second plate (107a) can be moved to a finite distance by engaging with the tooth (106a).
In one embodiment of the present disclosure, the slots (107b) of the second plate (107) are used to fasten the second plate (107) with the trailing arm (104) through holes (104d). And said slots (107b) helps in spacing the holes (104d) at a predetermined distance.
In one embodiment of the present disclosure, stabilizer bar adapter (109) can adapt stabilizer bars (110) of different diameters. This helps in using the same adapter (109) for different diameters of stabilizer bar (110).
In one embodiment of the present disclosure, roll stiffness of the suspension can be varied using the different diameter of stabilizer bar (110).
FIG. 9 and FIG. 10 are exemplary embodiments illustrates assembly of spring seat, damper mounting bracket (111) with the trailing arm (104) of the twist beam (100). Said assembly comprises a first plate (106) joined at the edge of the trailing arm (104) and said first plate consists of tooth (106a) at its end. A second plate (107) mounted on side face of the trailing arm (104) and said second plate (107) consists of tooth (107a) on its top edge for engaging with the tooth (106a) of the first plate (106). Plurality of slots (107b)

are provided on face for fastening the second plate (107) with the trailing arm (104). A third plate (113) is mounted perpendicular to the second plate (107) for supporting suspension members of the vehicle and said suspension members are coil springs. A damper mounting bracket (111) is mounted on the second plate (107) for supporting the damper members.
In one embodiment of the present disclosure, the damper mounting bracket (111) is joined to the trailing arm (104) by a process selected from the group but not limited to welding, brazing, fastening, fusing and any other process which serve the purpose.
In one embodiment of the present disclosure, a wheel mounting bracket (112) is mounted on the trailing arm (104) of the twist beam (100) which supports wheels of the vehicle.
In one embodiment of the present disclosure, the second plate (107) is fastened to the trailing arm (104) through slots (107b) and holes (104d), it helps in changing the spring installation ratio as per packaging of the spring on the vehicle Body In White (BIW).
In one embodiment of the present disclosure, the tooth (107a) of the second plate (107) engages with the tooth (106a) of first plate (106) to provide displacement to the cross beam (108) in longitudinal direction. And the second plate (107a) can be moved to a finite distance by engaging with the tooth (106a).
In one embodiment of the present disclosure, a method of adjusting an angle of the twist beam (100) is disclosed. Said method fallows the steps of; tuning a trailing arm adapter bracket (103) with respect to change in wheel base of the vehicle, wherein said adapter bracket (103) is hinged to the trailing arm through holes (103b and 104a) and then it is turned and fastened at the predetermined angle with respect to longitudinal axis of the vehicle. Then, adjusting an angle of pivot bracket (102) by matching holes (101a and 102a) and (101b and 102b) of pivot bracket adapter plate (101) with respect change in angle of the twist beam adapter bracket (103).

In one embodiment of the present disclosure, the angle of pivot bracket is varied between 0 degree to 25 degrees in steps of 5 degree with longitudinal axis of the vehicle. The said angle is tuned as per the required toe correction specific to the vehicle.
In one embodiment of the present disclosure a method of adjusting a twist beam in longitudinal direction is provided. Said method fallows the steps of, moving a second plate (107) to predetermined distance on the trailing arm (104) by engaging the tooth (107a) of the second plate (107) with a tooth (106a) of a first plate (106), and then fastening the second plate is at the required position through holes (104d) and a slots (107b) using a fastener (105).
In one embodiment of the present disclosure, a method of assembling components such as pivot bracket adapter plate (101), pivot bracket (102), trailing arm adapter bracket (103) and trailing arm (104) of the twist beam (100) is provided. Said method fallows the steps of; joining the pivot bracket adapter plate (101) to a chassis of the vehicle by a predetermined process. Now mounting a pivot bracket (102) at predetermined angle with respect to longitudinal axis of the vehicle by matching the holes (101a and 102a, 101b and 102b). Then pivoting a trailing arm adapter (103) with the pivot bracket (102) through holes (102d) and sleeve (103a). Now mounting a trailing arm (104) on the trailing arm adapter bracket (103) at predetermined angle with respect to longitudinal axis of the vehicle.
In one embodiment of the present disclosure, the pivot bracket adapter plate (101) is joined to the vehicle chassis by a process selected from a group comprising welding, brazing, fusing, fastening and any other process which serve the purpose.
Advantages
The present disclosure provides an adjustable twist beam which is used in different vehicles.
The present disclosure provides an adjustable twist beam in which angle of the twist beam is varied between 0 degree to 25 degrees.

The present disclosure provides an adjustable twist beam in which trailing arm position is adjusted in longitudinal direction.
The present disclosure provides an adjustable twist beam having stabilizer bar adapter on which stabilizer bars of different diameters is mounted.
The present disclosure provides an adjustable twist beam in which position of the spring seat is varied in longitudinal direction. This helps in changing the spring installation ratio as per the packaging of the spring on the vehicle BIW.
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.”
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:

Reference Number Description
100 Twist beam
101 Pivot bracket adapter plate

101a and 101b Holes on Pivot bracket adapter plate
101c Surface of the Pivot bracket adapter plate
102 Pivot bracket
102a and 102b Holes on top surface of pivot bracket
102c Top surface of pivot bracket
102d Holes on side wall of pivot bracket
102e Side wall of the pivot bracket
103 Trailing arm adapter
103a Sleeve
103b and 103c Holes on surface of trailing arm adapter
103d Surface of trailing arm
104 Trailing arm
104a and 104b Holes on surface of the trailing arm
104c Surface of the trailing arm
104d Holes on side face of the trailing arm
105 Fasteners
106 First plate
106a Tooth of first plate
107 Second plate
107a Tooth of second plate
107b Slots of the second plate
107c Protruded portion
108 Cross beam

109
Stabilizer bar adapter
109a Conical surface of stabilizer bar adapter
110 Stabilizer bar
111 Damper mounting bracket
112 Wheel mounting bracket
113 Third plate

We claim:
1. An adjustable twist beam (100) of a vehicle comprising;
a pivot bracket adapter plate (101) mounted on a chassis of the vehicle, wherein said plate (101) comprises plurality of holes (101a and 101b) at predetermined locations on its surface (101c);
a pivot bracket (102) mounted on the pivot bracket adapter plate (101), wherein said pivot bracket (102) comprises plurality of holes (102a and 102b) on its top surface (102c), and said holes (102a and 102b) matches with the holes (101a and 101b) of the plate (101) for fastening the pivot bracket (102) with the plate (101) at predetermined angle;
a trailing arm adapter (103) pivoted to the pivot bracket (102) side wall (102e), wherein said trailing arm adapter (103) comprises a sleeve (103a) at its end and plurality of holes (103b and 103c) on its surface (103d), and said trailing arm adapter (103) is fastened to the pivot bracket (102) through holes (102d) and sleeve (103a); and
a trailing arm (104) connected to the trailing arm adapter (103), wherein said trailing arm comprises plurality of holes (104a and 104b) on its surface (104c), and said holes (104a and 104b) matches with the holes (103b and 103c) for fastening the trailing arm (104) with the trailing arm adapter (103) at predetermined angle.
2. The twist beam as claimed in claim 1, wherein the pivot bracket adapter plate (101) is mounted on the chassis by a method selected from atleast one of welding, brazing, fusing, fastening and any other method which serve the purpose.
3. The twist beam as claimed in claim 1, wherein the pivot bracket (102) is mounted on the pivot bracket adapter plate (101) at the predetermined angle with respect to longitudinal axis of vehicle.

4. The twist beam as claimed in the claim 1, wherein said predetermined angle of the pivot bracket (102) can be varied between 0 degree to 25 degrees in the steps of 5 degrees with respect to longitudinal axis of the vehicle.
5. The twist beam as claimed in claim 1, wherein said sleeve (103a) comprises a bush inserted therein for fastening the pivot bracket (102).
6. The twist beam as claimed in claim 1, wherein said adapter plate (101), pivot bracket (102), adapter bracket (102) and trailing arm (104) are connected with the help of plurality of fasteners (105) selected from at least one of nuts and bolts, screws, rivets, socket head cap screws, hex lobular screws and any other fastener which serve the purpose.
7. A method of adjusting an angle of the twist beam (100), said method comprising acts of;
adjusting an angle of trailing arm adapter bracket (103) by matching a holes (103b and 103c) of the trailing arm adapter bracket (103) with holes (104a and 104b) of a trailing arm (104); and
adjusting an angle of pivot bracket (102) with respect to change in angle of the trailing arm adapter bracket (103) by matching holes (102a and 102b) of the pivot bracket (102) with holes (101a and 101b) of a pivot bracket mounting adapter (101) which is mounted to the chassis of the vehicle.
8. The method as claimed in claim 7, wherein the trailing arm adapter bracket (103) is fastened with the trailing arm (104) via holes (103b and 104a) and (103c and 104b) wherein the holes (103b and 104a) acts as hinge about which trailing arm adapter is turned and fastened at desired angle through holes (103c and 104b).
9. The method as claimed in claim 7, wherein angle of the pivot bracket (102) and the trailing arm adapter bracket (103) is changed with respect to longitudinal axis of the vehicle, by adjusting angle of the pivot bracket (102) between 0 degree to 25 degrees in the steps of 5 degrees with respect to change in angle of the trailing arm adapter bracket (103).

10. An adjustable twist beam (100) of a vehicle comprising;
a trailing arm (104) connected to a chassis of the vehicle, wherein said trailing arm (104) comprises plurality of holes (104d) on its side face;
a first plate (106) joined to the trailing arm (104) on its top edge, wherein said plate (106) comprises tooth (106a) at its end; and
a second plate (107) mounted on side face of the trailing arm (104), wherein said plate (107) comprises tooth (107a) on its top surface matching the tooth (106a) of the first plate (106) and plurality of slots (107b) on its face for fastening the second plate (107) with the trailing arm (104).
11. The twist beam as claimed in claim 10, wherein said second plate (107) comprises a protruded portion (107c) for mounting a cross beam (108) and a stabilizer bar adapter (109).
12. The twist beam as claimed in claim 11, wherein the stabilizer bar adapter (109) comprises a conical surface (109a) for mounting a variable diameter stabilizer bar (110).
13. The twist beam as claimed in claim 10, wherein a plate (113) is provided perpendicularly to the second plate (107) at its bottom for supporting suspension members of the vehicle.
14. The twist beam as claimed in claim 10, wherein a damper mounting bracket (111) is connected to the second plate (107) for mounting a damping member.
15. The twist beam as claimed in claim 10, wherein a wheel mounting bracket (112) is connected to the trailing arm (104) for mounting wheels of the vehicle.
16. A method of adjusting twist beam in a longitudinal direction, said method comprising acts of;

moving a second plate (107) on a trailing arm (104) to a predetermined distance;
engaging tooth (107a) of the second plate (107) with tooth (106a) of a first plate (106); and
fastening a second plate (107) to the trailing arm (104) through a slots (107b) and holes (104d).
17. The method as claimed in claim 16, wherein a tooth (107a) of second plate (107) engages with a tooth (106a) of a first plate (106) to achieve displacement of second plate (107) in longitudinal direction.
18. The method as claimed in claim 16, wherein the engagement of tooth (107a) with tooth (106a) facilitate movement of the second plate (107) to a finite distance in longitudinal direction.
19. The method as claimed in claim 16, wherein slots (107b) of the second plate (107) facilitates in spacing the holes (104d) at a predetermined distance.
20. A vehicle comprising an adjustable twist beam (100) as claimed in claims 1 and 10.
21. An adjustable twist beam (100) of a vehicle, a method of adjusting an angle of the twist beam (100) and a method of adjusting twist beam (100) in a longitudinal direction are substantially as herein above described and as illustrated in accompanying drawings.