Patent US3722529A successfully refreshed from Google Patents.
US3722529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle fuel tank
Assignee: Individual
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Filing: 1970-08-03
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Granted: 1973-03-27
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Expires: 1990-08-03
Abstract
Abstract A fuel tank is provided which is blow molded for the simultaneous and integral formation of a hollow body including a multi-level bottom wall with pipes depending from different levels of the wall and being integrally formed therewith. Wells are provided which encircle the upper end portion of these pipes. In addition, a charging pipe is provided at the top of the tank. A valve is connected to the pipes depending from the bottom wall for selectively using the same.
Inventors
- 👤 T Arakawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:51
CPC Classifications
B; B62; B62J; B62J35/00; B60; B60K; B60K15/00; B60K15/03; B60K15/06; Y; Y10; Y10T; Y10T137/00; Y10T137/4673; Y10T137/4857; Y10T137/794; Y10T137/8013; Y10T137/8593; Y10T137/87153; Y10T137/87161
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
146 words
A fuel tank for a vehicle comprising a hollow body including a bottom wall with two levels and main and secondary discharge pipes respectively connected to the bottom wall at the different levels and extending downwardly from the bottom wall, said main discharge pipe being connected at the higher of the two levels, said pipes including upper ends terminating, at least substantially, at the bottom wall; said main discharge pipe being located substantially centrally in said bottom wall, said hollow body being completely open in its interior and providing free and unrestricted flow of fuel between said levels so that when the fuel fills the tank to a height above the higher level the fuel will have a common surface at both levels, said body including side walls which are continuous and non-apertured, and a top wall, and an inlet pipe integral with the top wall.
Claim 2
Dependent Claim
146 words
A fuel tank for a vehicle comprising a hollow body including a bottom wall with two levels and main and secondary discharge pipes respectively connected to the bottom wall at the different levels and extending downwardly from the bottom wall, said main discharge pipe being connected at the higher of the two levels, said pipes including upper ends terminating, at least substantially, at the bottom wall; said main discharge pipe being located substantially centrally in said bottom wall, said hollow body being completely open in its interior and providing free and unrestricted flow of fuel between said levels so that when the fuel fills the tank to a height above the higher level the fuel will have a common surface at both levels, said body including side walls which are continuous and non-apertured, and a top wall, and an inlet pipe integral with the top wall.
Claim 3
Dependent Claim
25 words
A tank as claimed in claim 1 wherein said bottom wall includes flat cylindrical well portions encircling said ends of the pipes and integral therewith.
Claim 4
Dependent Claim
24 words
A tank as claimed in claim 2 wherein the bottom wall at said well portions are parallel to one another at said different levels.
Claim 5
Dependent Claim
36 words
A tank as claimed in claim 3 wherein said bottom wall at said well portions have apertures which open directly into the interior of the hollow body and lead directly to said ends of the pipes.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |