| Title of Invention | BUTTER FLY VALVE FOR FUEL TANK |
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| Abstract | This invention relates to fuel system of vehicles and more particularly it relates to filler neck tube (5) butter fly valve for preventing the fuel spillage from the fuel tank during vehicle dynamic conditions, like vehicles running, turning, toppling and in case of accident. According to the this invention butter fly valve comprises fuel tank (1), filler neck tube (5), hose (3), valve body (9), pivots (13), slots (11), resting means (14) are provided. Valve body (9) is fitted in the filler neck tube (5) from the bottom of said filler neck tube and locked with the help of dimples (7) and grooves (8) provided on the said filler neck tube and said valve body respectively. Said valve body comprises grooves (8) for accommodating the said the said dimples (7), slots (11) for providing the pivots (13) and flaps (10), said flaps are integral with said pivot. Resting means (14) provided on the valve body which is perpendicular to the side wall of the said valve body. Pivots comprises stoppers (12) for preventing the rotation of flaps beyond 75 degree to 90 degree, and least two flaps (10) comprises recess (15) for providing the space for said stopper during the rotation of said flaps about the said pivot axis during the fuel filling. |
| Full Text | FORM 2 THE PATENTS ACT 1970 (39 of 1970) & THE PATENTS RULES, 2003 COMPLETE SPECIFICATION (See Section 10; rule 13) TITLE OF THE INVENTION BUTTER FLY VALVE FOR FUEL TANK 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 SANDIP R GHOLKAR AND RAJESH R JOSHI 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 This invention relates to fuel system of vehicle and more particularly it relates to butter fly valve of fuel tank. BACKGROUND OF INVENTION Generally in existing vehicles filler neck is provided without any butter fly valve. In case of vehicle where fuel filling height is sufficient then there is no fuel spillage. But where the height of fuel filling is less then while vehicle running or in taking turn fuel spills from the fuel tank. In case of vehicle topples or in case of accident fuel spills from the fuel tank and there is possibility of vehicle catching fire. This is not desirable. So in order to prevent fuel from spillage where the fuel filling height is less some provision is required to avoid the fuel spillage. This invention has been developed to prevent the fuel spillage from fuel tank where the fuel filling height is less and during the vehicle running, turning, toppling and in case of accident. OBJECTS OF INVENTION The main object of this invention is to provide a butter fly valve to avoid fuel spillage where height of fuel filling is less. Another object of this invention is to provide a butter fly valve to prevent fuel spillage from fuel tank during vehicle running, turning, toppling or accident. 2 Yet another object of this invention is to provide a butter fly valve to improve fuel efficiency of a vehicle. Yet another object of this invention is to provide a butter fly valve which is simple in construction and easy to use and assemble. STATEMENT OF INVENTION Butter fly valve for a fuel tank comprises valve body adapted to be fitted on filler neck tube of fuel tank, pivot disposed on said valve body which rotates about its axis, slots on said valve body for mounting said pivot, at least two flaps integral with said pivot for preventing the fuel spillage from the fuel tank, resting means provided on said valve body for resting the said flaps in its closed positions due to its own weight. Butter fly valve in accordance with this invention wherein said filler neck tube comprises at least two dimples for fitting said valve body. Butter fly valve in accordance with this invention wherein said valve body comprises grooves for accommodating the said dimples in fitted position. Butter fly valve in accordance with this invention wherein said at least two flaps are semi circular in shape which are integral with said pivot. Butter fly valve in accordance with this invention wherein said resting means are perpendicular to the side walls of the said valve body. 3 Butter fly valve in accordance with this invention wherein said pivot comprises stoppers to prevent the rotation of said flaps beyond 75 degree to 90 degree. Butter fly valve in accordance with this invention wherein said flaps comprises recess to provide space for said stoppers during rotation. Butter fly valve in accordance with this invention wherein said butter fly valve is made of fuel resistant plastic materials, polymer and co-polymer. BRIEF DESCRIPTION OF INVENTION The butter fly valve for fuel tank comprises of filler neck tube (5), butter fly valve assembly (6). Butter fly valve assembly (6) comprises at least two flaps (10) and valve body (9). Butter fly valve comprises at least two flaps integral with the pivot (13). Stoppers (12) are provided on the said pivot to prevent the flap from rotating beyond 75 degree to 90 degree. Butter fly valve is inserted from bottom of said filler neck tube and the dimple (7) provided on filler neck tube (5) to lock butter fly valve in grooves (8) which are provided on valve body (9). The flaps are resting on resting means (14) provided on valve body (9) and the flaps are freely rotated about its pivot (13) axis. The Valve body (9) comprises two slots (11) for disposing of pivot (13), at least two grooves (8) for fitment of said valve body in Filler neck tube (5). Resting 4 means (14) which are perpendicular to side wall of said valve body (9) is provided for resting of flaps (10). Flap (10) is integral with Pivot (13) which is fitted in slot (11) on said valve body (9) and flaps are rotated about said pivot axis by its own weight. Stoppers (12) are provided on said pivot (13) to restrict rotation beyond 75 degree-90 degree after fitment in said valve body. Said flaps (10) comprises recess (15) to provide space for said stoppers during rotation of said flaps while fuel filling. 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. Figure 1- shows the fuel tank mounting on the vehicle Figure 2 - shows the assembly of filler neck of fuel tank. Figure 3 - shows the filler neck tube of fuel tank Figure 4 - shows the assembly of butter fly valve of fuel tank Figure 5 - shows the butter fly valve body of fuel tank Figure 6 - shows the flaps of butter fly valve Now referring to figures 1 to 6 in accordance with this invention fuel tank assembly mounted at its position on vehicle structure (4) comprises fuel tank (1), filler neck assembly (2) and hose (3). 5 Filler neck assembly (2) is connection pipe of said fuel tank (1) and fuel filling opening through which fuel is filled and is fitted on fuel tank assembly of a vehicle. Hose (3) is disposed between fuel tank (1) and filler neck assembly (2) to provide intermediate means to supply fuel to the fuel tank (1) during fuel filling. Filler neck assembly (2) comprises: Filler neck tube (5) is pipe connection to supply the fuel in the fuel tank which is having two ends. At one end fuel tank cap is provided and at other end butter fly valve is fitted where at least two dimples (7) are provided on said filler neck tube(5). Filler neck tube (5) comprises at least two dimples (7) which fits in to the groove (8) provided on the valve body (9). Dimples (7) in the filler neck tube (5) are equal in number to the grooves (8) provided on the valve body (9) where said dimples (7) are accommodated in to the said grooves (8) during assembly of said valve body (9) in to the said filler neck tube (5). Valve Body (9) comprises grooves (8) for fitment of said butter fly valve assembly(6), slot (11) for providing pivot (13) for rotation of said flaps, resting means (14) for preventing the reverse rotation of said flaps (10) and resting said flaps to its closed position. Butter fly valve assembly (6) disposed at the other end of the filler neck tube (5), which comprises at least two flaps (10) to prevent fuel spillage, pivot (13) for 6 rotating said flaps (10) about said pivot axis, stopper (12) for preventing rotation of said flaps beyond 75 degree to 90 degree and for providing sufficient opening for fuel flow during fuel filling, recess (15) for providing space for said stoppers while rotation of said flaps during fuel filling. At least two dimples (7) are provided on filler neck tube (5) opposite to each other for inserting butter fly valve assembly (6) from bottom of said filler neck tube (5) which will be locked in groove (8) which is provided on said valve body (9). Said grooves are same in number as dimples provided on said filler neck tube. Valve Body (9) comprises at least two grooves (8) for fitment of said butter fly valve assembly (6), slot (11) for providing pivot (13) for rotation of said flaps (10) during fuel filling , resting means(14 ) is provided for resting of said flaps on it and for preventing the reverse rotation of said flaps while fuel filling is stopped. Said flaps rests on the said resting means due to its own weight. Resting means (14) provided on the valve body (9) are perpendicular to the side wall of the said valve body (9). Said flaps (10) are semi circular in shape integral with the said pivot (13) and comprises stopper (12) and recess (15). Said flaps (10) which are integral with said pivot (13) are fitted in slot (11) provided on valve body (9). Said flaps (10) are freely rotated about pivot (13) axis due to fluid pressure during fuel filling up to 75 degree to 90 degree to provide sufficient openings for fuel flow supplied during fuel filling. 7 Said flaps (10) are resting on resting means (14) provided on valve body (9) to prevent the reverse rotation of said flaps and for resting said flaps in its closed position. Said flaps (10) rest automatically on said resting means (14) by its own weight due to gravity. The stopper (12) are provided on said pivot (13) for restricting the rotation of said flap beyond 75 degrees to 90 degree to provide enough openings for fuel flow during fuel filling. The recess (15) is provided on the said flaps to provide space for stopper (12) while flap rotation during fuel filling. The butter fly valve is made with fuel resistant plastic material, polymer preferably Polyacetal (Co polymer) IS 7078. So it is easy to assemble or handle and said butter fly valve assembly is less in weight. During fuel filling said flaps (10) will open because of fuel pressure and will rotate about the said pivot (13) axis to provide space for fuel flow during fuel filling. After completion of fuel filling said flaps (10) will be closed by its own weight and will rest on said resting means (14) provided on the said valve body (9). Said flaps (10) are closed by its own weight as the position of the butter fly valve assembly (6) is in such a way that said flaps (10) always remains closed in said valve body while fitted on the filler neck tube (5) of vehicle. So during running or dynamic condition of vehicle fuel does not spill. 8 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. 9 WE CLAIM 1. Butter fly valve for a fuel tank comprises - valve body adapted to be fitted on filler neck tube of fuel tank, - pivot disposed on said valve body which rotates about its axis, - slots on said valve body for mounting said pivot, - at least two flaps integral with said pivot for preventing the fuel spillage from the fuel tank, - resting means provided on said valve body for resting the said flaps in its closed positions due to its own weight. 2. Butter fly valve of fuel tank as claimed in claim 1 wherein said filler neck tube comprises at least two dimples for fitting said valve body. 3. Butter fly valve of fuel tank as claimed in claim 1 to 2, wherein said valve body comprises grooves for accommodating the said dimples in fitted position. 4. Butter fly valve of fuel tank as claimed in claims lto 3, wherein said at least two flaps are semi circular in shape which are integral with said pivot. 5. Butter fly valve of fuel tank as claimed in claims 1 to 4, wherein said resting means are perpendicular to the side walls of the said valve body. 6. Butter fly valve of fuel tank as claimed in claims 1 to 5, wherein said pivot comprises stoppers to prevent the rotation of said flaps beyond 75 to 90 degree. 10 ABSTRACT Butter Fly Valve For Fuel Tank This invention relates to fuel system of vehicles and more particularly it relates to filler neck tube(5) butter fly valve for preventing the fuel spillage from the fuel tank during vehicle dynamic conditions, like vehicles running , turning, toppling and in case of accident. According to the this invention butter fly valve comprises fuel tank(l), filler neck tube(5), hose(3), valve body(9) , pivots (13) , slots(ll), resting means(14) are provided. Valve body (9) is fitted in the filler neck tube(5) from the bottom of said filler neck tube and locked with the help of dimples(7) and grooves(8) provided on the said filler neck tube and said valve body respectively. Said valve body comprises grooves (8) for accommodating the said dimples (7), slots (11) for providing the pivots (13) and flaps (10), said flaps are integral with said pivot. Resting means (14) provided on the valve body which is perpendicular to the side wall of the said valve body. Pivots comprises stoppers (12) for preventing the rotation of flaps beyond 75 degree to 90 degree, and at least two flaps (10) comprises recess (15) for providing the space for said stopper during the rotation of said flaps about the said pivot axis during the fuel filling. Fig 4 |
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2049-MUM-2007-CLAIMS(AMENDED)-(18-9-2012).pdf
2049-MUM-2007-CLAIMS(AMENDED)-(27-10-2011).pdf
2049-MUM-2007-CLAIMS(AMENDED)-(3-10-2012).pdf
2049-MUM-2007-CLAIMS(AMENDED)-(31-10-2012).pdf
2049-MUM-2007-CLAIMS(MARKED COPY)-(18-9-2012).pdf
2049-MUM-2007-CLAIMS(MARKED COPY)-(3-10-2012).pdf
2049-mum-2007-correspondence(22-11-2007).pdf
2049-MUM-2007-CORRESPONDENCE(25-5-2012).pdf
2049-MUM-2007-CORRESPONDENCE(31-10-2012).pdf
2049-MUM-2007-CORRESPONDENCE(31-10-2012).tif
2049-mum-2007-correspondence-received.pdf
2049-MUM-2007-CORRESPONDNECE(3-10-2012).pdf
2049-mum-2007-description (complete).pdf
2049-MUM-2007-DRAWING(3-10-2012).pdf
2049-MUM-2007-FORM 13(27-10-2011).pdf
2049-mum-2007-form 18(22-11-2007).pdf
2049-mum-2007-form 8(22-11-2007).pdf
2049-mum-2007-form 9(22-11-2007).pdf
2049-MUM-2007-GENERAL POWER OF ATTORNEY(27-10-2011).pdf
2049-MUM-2007-REPLY TO EXAMINATION REPORT(27-10-2011).pdf
2049-MUM-2007-REPLY TO HEARING(18-9-2012).pdf
2049-MUM-2007-SPECIFICATION(AMENDED)-(27-10-2011).pdf
2049-MUM-2007-SPECIFICATION(MARKED COPY)-(27-10-2011).pdf
| Patent Number | 254407 | |||||||||
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| Indian Patent Application Number | 2049/MUM/2007 | |||||||||
| PG Journal Number | 44/2012 | |||||||||
| Publication Date | 02-Nov-2012 | |||||||||
| Grant Date | 31-Oct-2012 | |||||||||
| Date of Filing | 15-Oct-2007 | |||||||||
| Name of Patentee | TATA MOTORS LIMITED | |||||||||
| Applicant Address | BOMBAY HOUSE, 24 HOMI MODY STREET, HUTATMA CHOWK, MUMBAI 400 001, | |||||||||
Inventors:
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| PCT International Classification Number | F16K1/22 | |||||||||
| PCT International Application Number | N/A | |||||||||
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PCT Conventions:
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