US3757753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel tanks
Assignee: Peugeot Motor Co PLC
•
Filing: 1971-10-05
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Granted: 1973-09-11
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Expires: 1991-10-05
Abstract
Abstract A fuel tank for a motor vehicle engine has a vent pipe for fuel or vapour overflow leading from an upper end of the tank filler pipe to a liquid separator chamber housed within the tank. The vent pipe extends from the separator chamber to a container holding activated carbon particles for adsorbing fuel vapour and thence to an air cleanser for the engine carburettor.
Inventors
- 👤 A Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:13
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/035; B60K15/03504; F; F02; F02M; F02M25/00; F02M25/08; F02M25/089; F02M2025/0881
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
183 words
A fuel tank for a motor vehicle engine having a filler pipe extending upwardly of the tank, a cap for sealing the filler pipe, an outlet pipe connected to the tank for delivery of fuel from the tank, a vent pipe which opens into the filler pipe above the tank for venting air into the tank and receiving excess liquid and/or vaporized fuel, a device located in the vent pipe for collecting fuel vapour passing along the vent pipe from the filler pipe and a liquid separator located in the vent pipe between the filler pipe and said device for collecting liquid fuel passing along the vent pipe from the filler pipe which separator is housed within the fuel tank, said liquid separator comprising a separate chamber in the fuel tank and the vent pipe from the filler pipe opens into the bottom of the chamber and the vent pipe to the vapour collecting device leads from the top of the chamber so that any liquid collected in the chamber syphons bAck to the filler pipe when fuel is removed from the tank.
Claim 2
Dependent Claim
183 words
A fuel tank for a motor vehicle engine having a filler pipe extending upwardly of the tank, a cap for sealing the filler pipe, an outlet pipe connected to the tank for delivery of fuel from the tank, a vent pipe which opens into the filler pipe above the tank for venting air into the tank and receiving excess liquid and/or vaporized fuel, a device located in the vent pipe for collecting fuel vapour passing along the vent pipe from the filler pipe and a liquid separator located in the vent pipe between the filler pipe and said device for collecting liquid fuel passing along the vent pipe from the filler pipe which separator is housed within the fuel tank, said liquid separator comprising a separate chamber in the fuel tank and the vent pipe from the filler pipe opens into the bottom of the chamber and the vent pipe to the vapour collecting device leads from the top of the chamber so that any liquid collected in the chamber syphons bAck to the filler pipe when fuel is removed from the tank.
Claim 3
Dependent Claim
26 words
A fuel tank as claimed in claim 1 wherein the vent pipe is connected to the air inlet side of a carburettor for the vehicle engine.
Claim 4
Dependent Claim
21 words
A fuel tank as claimed in claim 1 wherein the device for collecting fuel vapour includes means for adsorbing the vapour.
Claim 5
Dependent Claim
37 words
A fuel tank as claimed in claim 3 wherein means are provided for supplying heated air to the vapour collection device to revaporise the fuel and pass the vaporised fuel to the air inlet of the carburettor.
Claim 6
Dependent Claim
78 words
A fuel tank as claimed in claim 4 wherein the means for heating the air comprise a heating jacket encircling a part of an exhaust system for the engine which jacket has an opening for receiving air and is connected to said device for removing fuel vapour so that air is drawn through the jacket past said device to the carburettor inlet when the engine is running and the heated air removes the fuel from said adsorption means.
Claim 7
Dependent Claim
38 words
A fuel tank as claimed in claim 1 wherein a plurality of conduits lead from the top of the tank to the upper end of the filler pipe to deliver vapour from the tank to the filler pipe.
Claim 8
Dependent Claim
34 words
A fuel tank as claimed in claim 6 wherein said plurality of pipes are connected to a manifold and a single pipe leads from the manifold to the upper end of the filler pipe.
References Cited (Backward Citations)
US3191587A
Cited
US2860656A
Cited
US3221724A
Cited
US3542239A
Cited
US3675634A
Cited
US3554175A
Cited
US3698160A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |