FORM 2
THE PATENTS ACT 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
(See Section 10; rule 13)
TITLE OF THE INVENTION
Overhead bar locking assembly for vehicles and method of assembly thereof
APPLICANTS
TATA MOTORS LIMITED, an Indian company
Having its registered office at Bombay House,
24 Homi Mody Street, Hutatma Chowk,
Mumbai 400 001 Maharashtra, India
INVENTORS
Mr Sourabh Karmakar and Mr Mukesh Kumar
both Indian Nationals of TATA MOTORS LIMITED,
An Indian company having its registered office at
Bombay House, 24 Homi Mody Street,
Hutatma Chowk, Mumbai 400 001
Maharashtra, India
PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the invention and the manner in
which it is to be performed.

FIELD OF INVENTION
The present invention is related to the locking assembly for vehicles and more particularly it relates to the overhead bar locking assembly for vehicles and method of assembling thereof.
BACKGROUND OF INVENTION
Generally use of overhead bar is frequent in load body. In general overhead bar is fitted on the body of vehicle with both end bolted to the load body or by welding some box section on overhead bar. Rod is also used to lock the overhead bar but the fixing of this type of rod with loose component increases the damage and loss of component which is considerably major problem faced in overhead bar locking system and also the user needs to have special equipments and tools for operating the overhead bar locking system like mounting and dismounting overhead bar locking system needs special tools and more than one operator which is considerably time consuming process.
OBJECTS OF INVENTION
The main object of the present invention is to provide overhead bar locking assembly for vehicles.
Another object of the present invention is to provide method of assembling overhead bar locking assembly.
Yet another object of the present invention is to provide overhead bar locking assembly which is fool proof locking mechanism, easy to operate by single person, less time consuming.
Still another object of the present invention is to provide overhead bar locking assembly which is simple in construction and having no loose component to prevent the loss and damage of the component.

SUMMARY OF INVENTION
The present invention relates to an overhead bar locking assembly for vehicles comprises, box section portion at one end of overhead bar which is fixedly mounted on the side body upper bar, at the other end of said overhead bar comprising at least two holes at opposite surfaces of said overhead bars for locking of said overhead bar, bracket member having holes provided therein which is in perfect alignment with the holes of said overhead bar configured to be adopted to dispose said overhead bar, base plate member fixedly connected on said side body upper bar adjacent to said bracket member, rod member configured to be fitted into the base plate which comprises open recess to house stopper member fixedly connected to said rod member through the hole provided at the centre of said stopper member, said stopper member comprises slot portions for engaging the open recess edges of said base plate along which said stopper member and said rod member is movable longitudinally on said base plate member, bush member fitted on one side of said bracket member for guiding said rod member through which said rod member passes for locking said overhead bar assembly.
According to one aspect of the present invention, said base plate member comprises grooves at both side of recess edge of said base plate member at the both end for engaging with said stopper member.
According to another aspect of the present invention, said stopper member comprises at least two slot portions substantially opposite to each other for engaging with the open recess edge of said base plate.
Preferably, said stopper member is circular in shape fixedly connected to the rod member at outer end.
According to another aspect of the present invention, said bush member is fixedly attached to said bracket member adjacent to the base plate member.

According to yet another aspect of the present invention, said bracket member comprises at least two holes which are in alignment with the holes of said overhead bar for guiding said rod member.
According to a further aspect of the present invention, said open recess is provided longitudinally in said base plate member which is configured to be adopted to facilitate movement of said stopper member.
According to still further aspect of the present invention, a method of assembling overhead bar locking assembly comprises: selecting a box section portion , attaching said box portion on a side body upper bar, selecting a bracket member, attaching said bracket member on said side body upper bar opposite to said box section is attached, attaching a bush member on one side of said bracket member after aligning the hole of said bush member and holes of said bracket member, selecting a base plate member comprising an open recess and groove provided therein , attaching said base plate member on said side body upper bar adjacent to said bush member attached on said bracket member and opposite to said box section portion is attached, selecting a stopper member having atleast two slot portion situated opposite to each other and a hole provided at the centre of said stopper member, selecting a rod member, inserting said rod member through the hole provided at the centre of said stopper member, fixedly attaching said stopper member at one end of said rod member, disposing an assembly of said rod member and said stopper member to the open recess of said base plate member to engage the slot portion of said stopper member with an open recess edge of said base plate member so that the other end of said rod member will be in alignment with the hole of said bush member.
BRIEF DESCRIPTION OF INVENTION
An overhead bar locking assembly for vehicles comprises, box section portion at one end of overhead bar which is fixedly mounted on the side body upper bar, at

the other end of said overhead bar comprising at least two holes at opposite surfaces of said overhead bars for locking of said overhead bar, bracket member with holes provided on said bracket in perfect alignment to the holes of said overhead bar to dispose said overhead bar, base, plate member fixed on the side body upper bar, rod member configured to be adopted to be fitted in to said base plate which comprises open recess to accommodate stopper member movably connected to said rod member through the hole provided at the centre of said stopper member, said stopper comprises at least two slot portion substantially opposite to each other for engaging the open recess edges of said base plate along which said stopper is movable longitudinally on said rod member, bush member fitted on one side of said bracket through which said rod member passes in the locked position.
BRIEF DESCRIPTION OF DRAWINGS
Figure-1 shows the perspective view of fixed box section at one end of overhead
bar assembly in accordance with this invention.
Figure-2 shows the perspective view of the locking assembly of said overhead bar
assembly.
Figure-3 shows the perspective view of the locking assembly of said overhead bar
assembly at partially locked position.
Figure-4 shows the perspective view of the locking assembly of the overhead bar
assembly at fully locked position.
Description of reference numbers for the major component in the drawings:
1- Box section portion
2- Overhead bar member
3- Side body upper bar
4- Holes of overhead bar
5- Bracket member
6- Base plate member
7- Rod member

8- Stopper member
9- Bush member
10-Open recess edge of base plate member 11-Open recess of base plate member 12-Slot member of stopper member
DETAILED DESCRIPTION OF INVENTION
Referring now to the drawings wherein the showings are for the purpose of illustrating a preferred embodiment of the invention only, and not for the purpose of limiting the same,
Now referring to figure -1 to 4, overhead bar locking assembly for vehicles comprises; box section portion(l) at one end of overhead bar (2)which is fixedly mounted on the side body upper bar(3), at the other end of said overhead bar(2) comprising at least two holes(4) at opposite surfaces of said overhead bars for locking of said overhead bar(2), bracket member(5) with holes provided on said bracket in perfect alignment to said holes(4) of said overhead bar to dispose said overhead bar, base plate member(6) fixed on the said side body upper bar(3), rod member(7) configured to be adopted to be fitted in to said base plate member(6) which comprises open recess (11) to accommodate stopper member(8) movably connected to said rod member through the hole provided at the centre of said stopper member(8), said stopper member(8) comprises at least two slot portion(12) substantially opposite to each other for engaging the open recess edges(lO) of said base plate member (6) along which said stopper member is movable longitudinally on said rod member, bush member(9) fitted on one side of said bracket member(5) through which said rod member(7) passes in the locked position.
Said bush member (9) is welded to said bracket member (5). Said bush member is used to guide said rod member (7) and hold said rod member at right position when it is in unlock condition.

Said rod member (7) and stopper member (8) are welded together. At least two slots are made in said stopper member substantially opposite to each other so that it can slide in said base plate member (6) along the open recess edge(10) provided on said base plate member.
Said base plate member is welded to body side upper bar after aligning said rod member in the hole of said stopper member and inserting said stopper slot in the base plate. Position of said base plate member is adjusted before welding it to said side body upper bar to make sure smooth sliding of said rod member along said open recess provided in said base plate member.
Said rod member (7) is touching to upper edge of said base plate member (6) in the locking position. After placing said overhead bar in said bracket, said rod member is to be moved inside to lock said overhead bar.
At extreme end said stopper member will touch the surface of said bush member for locking said rod member.
The rod member is then rotated downwards for locking said overhead bar. In the locked position, end portion of said rod member will touch the lower edge of said base plate member and said end portion of said rod member will rest on the edge of said base plate. For unlocking, operation is followed in reverse manner.
An assembling method of overhead bar locking assembly of a vehicle involves various steps. A box section portion (1) is selected and it is attached on a side body upper bar (3). Selecting of a bracket member (5) and attaching it on said side body upper bar (3) opposite to said box section (1) is attached. A bush member (9) is attached on one side of said bracket member (5) after aligning the hole of said bush member (9) and holes of said bracket member (5). Selecting of a base plate member (6) comprising an open recess (11) and groove provided therein. The base plate

member (6) is attached on said side body upper bar (3) adjacent to said bush member (9) which is attached on said bracket member (5) and opposite to said box section portion (1) is attached, Selecting of a stopper member (8) having at least two slot portion (12) situated opposite to each other and a hole provided at the centre of said stopper member (8) and a rod member (7). The rod member (7) is inserted through the hole provided at the centre of said stopper member (8). The stopper member (8) is fixedly attached at one end of said rod member (7). The disposing of an assembly of said rod member (7) and said stopper member (8) to the open recess (11) of said base plate member (6) to engage the slot portion (12) of said stopper member (8) with an open recess edge (10) of said base plate member (6) so that the other end of said rod member (7) will be in alignment with the hole of said bush member (9).
The foregoing description is a specific embodiment of the present invention. It should be appreciated that this embodiment is described for purpose of illustration only, and that numerous alterations and modifications may be practiced by those skilled in the art without departing from the spirit and scope of the invention. It is intended that all such modifications and alterations be included insofar as they come within the scope of the invention as claimed or the equivalents thereof.

WE CLAIM
1. An overhead bar locking assembly for vehicles comprising: box section portion (1) at one end of overhead bar (2) which is fixedly mounted on the side body upper bar (3), at the other end of said overhead bar comprising at least two holes (4) at opposite surfaces of said overhead bar (2) for locking of said overhead bar (2), bracket member (5) having holes provided therein which is in perfect alignment with the holes of said overhead bar (2) configured to be adopted to dispose said overhead bar (2), base plate member (6) fixedly connected on said side body upper bar (3) adjacent to said bracket member (5), rod member (7) configured to be fitted into said base plate (6) which comprises open recess (11) to house stopper member (8) fixedly connected to said rod member (7) through the hole provided at the centre of said stopper member (8), said stopper member comprises slot portions (12) for engaging the open recess edges (10) of said base plate member (6) along which said stopper member (8) and said rod member (7) is movable longitudinally on said base plate member (6), bush member (9) fitted on one side of said bracket member (5) for guiding said rod member (7) through which said rod member (7) passes for locking said overhead bar assembly.
2. The overhead bar locking assembly for vehicles as claimed in claim 1, wherein said base plate member (6) comprises grooves at both side of recess edge (10) of said base plate member (6) at the both end for engaging with said stopper member (8).
3. The overhead bar locking assembly for vehicles as claimed in claim 1, wherein said stopper member (8) comprises at least two slot portions (12) substantially opposite to each other for engaging with the open recess edge (10) of said base plate (3).

4. The overhead bar locking assembly for vehicles as claimed in claim 1, wherein said stopper member (8) having rounded shape fixedly connected to said rod member (7) at outer end.
5. The overhead bar locking assembly for vehicles as claimed in claim 1, wherein said bush member (9) is fixedly attached to said bracket member (5) adjacent to said base plate member (6).
6. The overhead bar locking assembly for vehicles as claimed in claim 1, wherein said bracket member (5) comprises at least two holes (4) which are in alignment with the holes of said overhead bar (2) for guiding said rod member (7).
7. The overhead bar locking assembly for vehicles as claimed in claim 1, wherein said open recess (11) is provided longitudinally in said base plate member (6) configured to be adopted to facilitate movement of said stopper member (8).
8. A method of assembling overhead bar locking assembly comprises:

- selecting a box section portion (1),
- attaching said box portion (1) on a side body upper bar (3),
- selecting a bracket member (5),
- attaching said bracket member (5) on said side body upper bar (3) opposite to said box section (1) is attached,
- attaching a bush member (9) on one side of said bracket member (5) after aligning the hole of said bush member (9) and holes of said bracket member (5),
- selecting a base plate member (6) comprising an open recess (11) and groove provided therein,

- attaching said base plate member (6) on said side body upper bar (3) adjacent to said bush member (9) attached on said bracket member (5) and opposite to said box section portion (1) is attached,
- selecting a stopper member (8) having at least two slot portion (12) situated opposite to each other and a hole provided at the centre of said stopper member (8),
- selecting a rod member (7) ,
- inserting said rod member (7) through the hole provided at the centre of said stopper member (8),
- fixedly attaching said stopper member (8) at one end of said rod member (7),
- disposing an assembly of said rod member (7) and said stopper member (8) to the open recess (11) of said base plate member (6) to engage the slot portion (12) of said stopper member (8) with an open recess edge (10) of said base plate member (6) so that the other end of said rod member (7) will be in alignment with the hole of said bush member (9).