US3835900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-leak safety valve in filling line for vehicle gasoline tank
Assignee: Individual
•
Filing: 1973-02-27
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Granted: 1974-09-17
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Expires: 1993-02-27
Abstract
Abstract A non-leak safety valve placed in the filling line for a vehicle gasoline tank and comprising a flexible sealing disc that normally extends across the filling line for a vehicle gasoline tank to prevent the escape of gasoline from the tank should the vehicle tip over due to an accident. Novel means is provided for permitting the upper portion of the flexible sealing disc to be bent inwardly by the delivery nozzle of a gasoline pump hose for opening the valve when an operator inserts the end of the nozzle into the tank filling line and presses the nozzle against the flexible sealing disc. Novel means is also provided for guiding the nozzle as it enters the tank filling line so that it will only contact the upper portion of the flexible disc for swinging it inwardly. Spring means returns the disc to closed position when the nozzle is retracted.
Inventors
- 👤 T Godbier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:11
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/04; F; F16; F16K; F16K15/00; F16K15/18; F16K15/182; F16K15/1825
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
236 words
A non-leak safety valve for preventing the accidental leakage of liquid fuel from a vehicle tank and comprising: a. a tubular fuel inlet pipe for the tank and having an inwardly extending annular flange spaced inwardly from the outer end of said pipe; b. a flexible disc valve bearing against the side of said annular flange that faces toward the tank for making a liquid tight seal against the flange for preventing any leakage of liquid fuel from the tank; c. means for holding the lower portion of said flexible disc valve permanently against the adjacent portion of said annular flange, the upper portion of said flexible disc valve being free to swing inwardly when a gasoline filling nozzle is pressed against this portion for opening the upper half of the valve; d. spring means for swinging the upper portion of said flexible disc valve against said annular inwardly extending flange for closing the valve when the gasoline filling nozzle is withdrawn from the fuel inlet pipe; e. a nozzle guiding member positioned in the inlet pipe and in front of the lower fixed portion of said flexible disc valve and having an upwardly inclined surface for guiding the nozzle away from the lower half of said flexible valve and into contact with the upper half of the valve for swinging only the upper valve half inwardly when the nozzle is inserted into the inlet pipe.
Claim 2
Dependent Claim
236 words
A non-leak safety valve for preventing the accidental leakage of liquid fuel from a vehicle tank and comprising: a. a tubular fuel inlet pipe for the tank and having an inwardly extending annular flange spaced inwardly from the outer end of said pipe; b. a flexible disc valve bearing against the side of said annular flange that faces toward the tank for making a liquid tight seal against the flange for preventing any leakage of liquid fuel from the tank; c. means for holding the lower portion of said flexible disc valve permanently against the adjacent portion of said annular flange, the upper portion of said flexible disc valve being free to swing inwardly when a gasoline filling nozzle is pressed against this portion for opening the upper half of the valve; d. spring means for swinging the upper portion of said flexible disc valve against said annular inwardly extending flange for closing the valve when the gasoline filling nozzle is withdrawn from the fuel inlet pipe; e. a nozzle guiding member positioned in the inlet pipe and in front of the lower fixed portion of said flexible disc valve and having an upwardly inclined surface for guiding the nozzle away from the lower half of said flexible valve and into contact with the upper half of the valve for swinging only the upper valve half inwardly when the nozzle is inserted into the inlet pipe.
Claim 3
Dependent Claim
62 words
The combination as set forth in claim 1: and in which a. the upwardly inclined surface in the nozzle guiding member having a semi-circular front edge that contacts with the adjacent inner surface of the inlet pipe; and b. the rear edge of said upwardly inclined surface being in a straight line that contacts the adjacent portion of said flexible disc valve.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |