US3610220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel tank construction
Assignee: Toyota Motor Corp
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Filing: 1970-05-04
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Granted: 1971-10-05
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Expires: 1990-05-04
Abstract
Abstract Fuel tank construction comprises fuel tank with fuel pipe connected thereto. Fuel reclaim vessel has bottom portion positioned at higher elevation than top of fuel tank. Siphon tube has one end adjacent bottom of fuel tank and other end adjacent bottom of fuel reclaim vessel. Intermediate peak portion of siphon tube is positioned at higher elevation than filling port of fueling pipe. Pressure equalizing tube is between top of fueling pipe and fuel reclaim vessel, and an exhaust pipe is connected to fuel reclaim vessel in order to exhaust air and fuel vapor in the vessel.
Inventors
- 👤 Mitsumasa Yamada
- 👤 Mikio Minoura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:37
CPC Classifications
F; F02; F02M; F02M25/00; F02M25/08; F02M25/089; B; B60; B60K; B60K15/00; B60K15/03; B60K15/035; B60K15/03504; F02M2025/0863; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86187
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
106 words
A fuel tank construction comprising a fuel tank with a fueling pipe connected thereto; fuel reclaim vessel with a bottom portion positioned at a higher elevation than the top of the fuel tank, a siphon tube having one end adjacent the bottom of the fuel tank and the other end adjacent the bottom of the fuel reclaim vessel, the siphon tube having an intermediate peak portion positioned at a higher elevation than the filling port of the fueling pipe, a pressure equalizing tube connected between the top of the fueling pipe and the fuel reclaim vessel, and an exhaust pipe connected to the fuel reclaim vessel.
Claim 2
Dependent Claim
28 words
A fuel tank construction as in claim 1 wherein the end of the exhaust pipe opposite the connection to the fuel reclaim vessel is vented to the atmosphere.
Claim 3
Dependent Claim
45 words
A fuel tank construction as in claim 1 wherein the end of the exhaust pipe opposite the connection to the fuel reclaim vessel is connected to an engine suction line, and a fuel vapor collecting arrangement associated with the exhaust pipe for collecting fuel vapor.
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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |