US3949720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel container systems
Assignee: Individual
•
Filing: 1974-02-25
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Granted: 1976-04-13
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Expires: 1994-02-25
Abstract
Abstract This invention, in one embodiment useful as a vehicular fuel container, includes as rigid outer tank, a collapsible inner bladder, expansion volumes positioned between said tank and said bladder, and means for causing fuel vapors to be removed from the bladder and injected into the vehicle carburation system for subsequent combustion.
Inventors
- 👤 Charles F. Zipprich
- 👤 Harvey R. Prins
- 👤 Keith M. Gagnier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:33
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/035; B60K15/03504
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
148 words
In a vehicular fuel system, fuel storage apparatus comprising the combination of a rigid outer container having a filler opening, a continuous collapsible liner positioned within said outer container, the interior of which liner is accessible via an opening positioned inside said filler opening, said liner being without flotation material positioned at the underside of the top of said liner that would form pockets. resilient, compressible, expansion volume devices positioned between the outside of the top of said liner and the inside of the top of said outer container, and means for removing vapor from the top of the interior of said collapsible liner which comprises conduit means for conducting vapor away from said collapsible liner, suction producing means connected to said conduit means, and liquid check valve means positioned in the flow path formed by said conduit means between said collapsible liner and said suction producing means.
Claim 2
Dependent Claim
148 words
In a vehicular fuel system, fuel storage apparatus comprising the combination of a rigid outer container having a filler opening, a continuous collapsible liner positioned within said outer container, the interior of which liner is accessible via an opening positioned inside said filler opening, said liner being without flotation material positioned at the underside of the top of said liner that would form pockets. resilient, compressible, expansion volume devices positioned between the outside of the top of said liner and the inside of the top of said outer container, and means for removing vapor from the top of the interior of said collapsible liner which comprises conduit means for conducting vapor away from said collapsible liner, suction producing means connected to said conduit means, and liquid check valve means positioned in the flow path formed by said conduit means between said collapsible liner and said suction producing means.
Claim 3
Dependent Claim
17 words
The apparatus described in claim 1 wherein said suction producing means is the carburetor of said vehicle.
Claim 4
Dependent Claim
18 words
The apparatus described in claim 1 in which said expansion devices comprise at least one air filled bladder.
Claim 5
Dependent Claim
18 words
The apparatus described in claim 2 in which said expansion devices comprise at least one air filled bladder.
Claim 6
Dependent Claim
18 words
The apparatus described in claim 1 in which said expansion devices comprise at least one foam rubber block.
Claim 7
Dependent Claim
18 words
The apparatus described in claim 5 in which said expansion devices comprise at least one foam rubber block.
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) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |