FORM 2
THE PATENTS ACT 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
(See Section 10; rule 13)
TITLE OF THE INVENTION
Split type bullet proof radiator grill assembly for vehicles
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 Subhankar Banerjee
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 relates to bullet proof vehicles and more particularly it relates to split type bullet proof radiator grill assembly for vehicles.
BACKGROUND OF INVENTION:
Generally bullet proof vehicles are used by army and security forces to protect the drivers and other occupants by bullet proof steel sheet and bullet proof glass placed all around the vehicle body. But for radiator, in the front side of the vehicle, cannot be made up of flat steel sheet because sufficient amount of air flow is must for the radiator as well as for the engine to work properly. So grill type protection is normally required for the radiator front which allows air to flow but resist any projectile to pass through especially bullets. But this type of constructions suffers one major drawback is that by virtue of its construction, it becomes very heavy which poses a big problem for regular routine maintenance and checking of the radiator coolant and engine oil.
OBJECT OF INVENTION:
The main object of the present invention is to provide split type bullet proof radiator grill assembly for vehicles.
Another object of the present invention is to provide split type bullet proof radiator
grill assembly for vehicles which is simple in construction and easy to operate for
maintenances.
Yet another object of the present invention is to provide split type bullet proof
radiator grill assembly for vehicles which facilitates ease in checking radiator
coolant and engine oil.


STATEMENT OF INVENTION:
Split type bullet proof radiator grill assembly for vehicles comprises; radiator grill portions splited in to at least two halves comprising lower radiator grill portion mounted to the front structure frame of the vehicles and upper radiator grill portion mounted on said front structure frame of the vehicles, wherein at least one of said radiator grill portions are movably mounted on the said front structure frame through fulcrum means which facilitates said radiator grill portions to be opened by rotating about said fulcrum means , said fulcrum means comprises first hinge portion with hole provided therein connected with said front structure frame and second hinge portion with hole provided therein connected to the said radiator grill, and pin member which is inserted vertically in upright direction in to said holes of said first and second hinge portions, fins are configured to be fitted in to the front structure frame of the vehicles.
Split type bullet proof radiator grill assembly for vehicles, in accordance with this invention, wherein said lower radiator grill portion is detachably mounted through at least four brackets to the said front structure frame of the vehicles.
Split type bullet proof radiator grill assembly for vehicles, in accordance with this invention, wherein said brackets fixedly connected to the said radiator grill and detachably mounted to the said front structure frame.
Split type bullet proof radiator grill assembly for vehicles, in accordance with this invention, wherein said upper radiator grill portion at one end connected to the said fulcrum means which can be opened by rotating it about said fulcrum means.


Split type bullet proof radiator grill assembly for vehicles, in accordance with this invention, wherein said upper radiator grill portion at other end comprises locking means provided on said front structure frame of vehicle for locking said radiator grill in closed position.
Split type bullet proof radiator grill assembly for vehicles, in accordance with this invention, wherein material selected for said radiator grills and fins is bullet proof materials.
Split type bullet proof radiator grill assembly for vehicles, in accordance with this invention, wherein said bullet proof material selected for said radiator grill is at least 8mm thickness armored steel sheet.
Split type bullet proof radiator grill assembly for vehicles, in accordance with this invention, wherein said bullet proof material selected for said fins is at least 6.5 mm thickness armored steel sheet.
BRIEF DESCRIPTION OF INVENTION:
Split type bullet proof radiator grill assembly for vehicles comprises; radiator grill mounted on the front structure frame of vehicles, fins fitted on said front structure frame of vehicle wherein said grill is splited in to at least two halves which comprises lower portions of said grill which is connected with the frame of vehicles and upper or top portions which is connected to the hinge portions at its one end and is operable through hinge mountings which in turn is connected to the said frame of vehicle and other end of said top portion of said grill comprises locking means to lock the said grill. Said upper portion of said radiator grill is connected to the front structure frame of vehicles through fulcrum means which


facilitates top portion of the said radiator grill assembly to be opened by turning or rotating about said fulcrum means for the maintenances works. Lower portions or bottom portion of said radiator grill is mounted to front structure of vehicles with at least four brackets. The said brackets are welded with the radiator grill and nut bolted with the said front structure of the vehicles so that it can be easily removed when required for elaborate maintenance of engine components and radiator.
BRIEF DESCRIPTION OF DRAWINGS
Figure-1 shows the front view the lower portion and top portion of said radiator grill in closed position to be fitted on the front of the vehicle structure. Figure-2 shows the hinge portions with fulcrum means.
Figure-3 shows the top portions of the radiator grill which can be opened about the said fulcrum means.
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 3 , split type bullet proof radiator grill assembly for vehicles comprises; grill mounted on the front structure of vehicle, fins fitted on said front structure of vehicle wherein said radiator grill is splited in to at least two halves which comprises lower radiator grill portion(2) which is connected with the frame of vehicles and upper radiator grill portion (l)which is connected to fulcrum means (3) at its one end and is openable by rotating about said fulcrum means, wherein at least one of said radiator grill portion is movably mounted to the said front structure of vehicles, said fulcrum means(3) comprises first hinge portions


which is connected to the said front structure frame of vehicle and second hinge portion which is connected to the said radiator grill, and other end of said upper portion of said radiator grill comprises locking means to lock the said radiator grill.
Fulcrum means(3) comprises first hinge portion with hole provided therein which is connected to the said front structure frame and second hinge portion with hole provided therein, which is connected to the said radiator grill and pin member which is inserted vertically in upright direction in to the said holes of said first and second hinge portions. Said fulcrum means which facilitates upper portion of the said radiator grill assembly to be opened by turning or rotating about said fulcrum means for the maintenances works.
Lower radiator grill portions is mounted to front structure of vehicles with at least four brackets (4). The said brackets(4) are welded with the front structure of the vehicles and nut bolted with the said radiator grill so that it can be easily removed when required for elaborate maintenance of engine components and radiator.
Said upper radiator grill portions is approximately one third of the total height of said radiator grill and said lower portion of said radiator grill is approximately two third of the total height of the said radiator grill.
Said upper radiator grill portion at other end comprises locking means(6) for locking said radiator grill in closed position.
Said bullet proof radiator grills are made of 8mm thick armored steel sheet for outer periphery and said fins are made up of 6.5 mm thickness armored steel sheet plate configured in such a way that it will not allow bullet to pass through and provides considerable amount of passage for airflow.


The lower radiator grill portion of said bullet proof radiator grill is mounted to the said front structure of the vehicles through at least four brackets (4) which are welded with the said radiator grill and nut bolted with the said front structure of the said vehicles, which can be opened and removed for elaborate maintenance of engine components and radiator.
Said fulcrum means comprises first hinge portion with holes provided therein which is bolted with the said front structure frame of the vehicles and second hinge portion with holes provided therein which is welded to the said radiator grill, pin member (5) which is inserted vertically in upright direction in to the said holes of said first and second hinge portions. Said fulcrum means configured to be adapted which facilitates upper portion of the said radiator grill assembly to be opened by turning or rotating about said fulcrum means.
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. Split type bullet proof radiator grill assembly for vehicles comprises; radiator grill portions splited in to at least two halves comprising lower radiator grill portion mounted to the front structure frame of the vehicles and upper radiator grill portion mounted on said front structure frame of the vehicles, wherein at least one of said radiator grill portions are movably mounted on the said front structure frame through fulcrum means which facilitates said radiator grill portions to be opened by rotating about said fulcrum means , said fulcrum means comprises first hinge portion with hole provided therein connected with said front structure frame and second hinge portion with hole provided therein connected to the said radiator grill, and pin member which is inserted vertically in upright direction in to said holes of said first and second hinge portions, fins are configured to be fitted in to the front structure frame of the vehicles.
2. Split type bullet proof radiator grill assembly for vehicles as claimed in claim 1, wherein, said lower radiator grill portion is detachably mounted through at least four brackets to the said front structure frame of the vehicles.
3. Split type bullet proof radiator grill assembly for vehicles as claimed in claim 1, wherein, said brackets are fixedly connected to the said front structure frame and detachably mounted to the said radiator grill.
4. Split type bullet proof radiator grill assembly for vehicles as claimed in claim 1, wherein, said upper radiator grill portion at one end connected to the said fulcrum means which can be opened by rotating it about said fulcrum means.
5. Split type bullet proof radiator grill assembly for vehicles as claimed in claim 1, wherein, said upper radiator grill portion at other end comprises locking means for locking said radiator grill in closed position.


6. Split type bullet proof radiator grill assembly for vehicles as claimed in claim 1, wherein, material selected for said radiator grills and fins is bullet proof materials.
7. Split type bullet proof radiator grill assembly for vehicles as claimed in claim 1, wherein, said bullet proof material selected for said radiator grill is at least 8mm thickness armored steel sheet.
8. Split type bullet proof radiator grill assembly for vehicles as claimed in claim 1, wherein, said bullet proof material selected for said fins is at least 6.5 mm thickness armored steel sheet.
9. Split type bullet proof radiator grill assembly for vehicles substantially as herein described with reference to accompanying drawings.





ABSTRACT
Split type bullet proof radiator grill assembly for vehicles
This invention relates to split type bullet proof radiator grill assembly for vehicles which can protect the driver and other occupants by resisting the bullet to pass through radiator grill when fired from the front to the vehicles. Said split type bullet proof radiator grill assembly for vehicles comprises; radiator grill portions which is splited in to at least two halves comprising lower radiator grill portion which is connected to the front structure frame of the vehicles and upper radiator grill portion mounted in front structure frame of the vehicles , wherein at least one of said radiator grill portion is movably mounted on said front structure frame of vehicles, fulcrum means which facilitates said radiator grill portion to be opened about said fulcrum means ,said fulcrum means comprises first hinge portion with hole provided therein connected with said front structure frame and second hinge portion with hole provided therein connected to the said radiator grill, pin member which is inserted vertically in upright direction in to said holes of said first and second hinge portions, fins are configured to be fitted in to the front structure frame of the vehicles. Said radiator grill will protect the radiator and engine from bullet firing and associated damage which could lead to malfunction of the engine and radiator of the vehicles and said split type bullet proof radiator grill also facilitates the eases in inconvenience of maintenance due to heaviness of component.