Patent US3800978A successfully refreshed from Google Patents.
US3800978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid tank provided with de-gasing means
Assignee: Automobiles Peugeot SA
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Filing: 1972-09-29
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Granted: 1974-04-02
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Expires: 1992-09-29
Abstract
Abstract Liquid tank structure in which the filling piping connected to the bottom part of the tank is connected to the top part of the tank by a venting pipe having an upper portion, a lower portion constituting a liquid trap and a generally upwardly extending portion. A chamber is inserted in the upwardly extending portion of the venting pipe and a conduit including a constricted passage connects the lower part of the chamber to the tank. The volume of the part of the chamber below the points of connection of the chamber to the upwardly extending portion of the venting pipe is equal to at least the volume of the lower portion of the venting pipe which constitutes the trap.
Inventors
- 👤 J Sigwald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:41
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/035; B60K15/073; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86292; Y10T137/86324
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
146 words
A liquid tank structure comprising a tank having an upper part and a lower part, a filling piping connected to the lower part of the tank, a venting pipe which is connected to the upper part of the tank, the venting pipe having an upper portion adjacent the tank, a lower portion constituting a liquid trap and a generally upwardly extending portion communicating with the atmosphere, a chamber inserted in the upwardly extending portion of the venting pipe, the chamber having a lower part, and a conduit including a constricted passage connecting the lower part of the chamber to the tank, the volume of a part of the chamber located below parts of the upwardly extending portion of the venting pipe between which the chamber is inserted being equal to at least the volume of the lower portion of the venting pipe which constitutes the trap.
Claim 2
Dependent Claim
146 words
A liquid tank structure comprising a tank having an upper part and a lower part, a filling piping connected to the lower part of the tank, a venting pipe which is connected to the upper part of the tank, the venting pipe having an upper portion adjacent the tank, a lower portion constituting a liquid trap and a generally upwardly extending portion communicating with the atmosphere, a chamber inserted in the upwardly extending portion of the venting pipe, the chamber having a lower part, and a conduit including a constricted passage connecting the lower part of the chamber to the tank, the volume of a part of the chamber located below parts of the upwardly extending portion of the venting pipe between which the chamber is inserted being equal to at least the volume of the lower portion of the venting pipe which constitutes the trap.
Claim 3
Dependent Claim
27 words
A liquid tank structure as claimed in claim 1, wherein the constricted passage is disposed in the vicinity of the connection between the conduit and the tank.
Claim 4
Dependent Claim
68 words
A liquid tank structure as claimed in claim 1, wherein the constricted passage has such cross-sectional area relative to the cross-sectional area of the filling piping that the amount of fuel which can rise in said conduit during the time it takes to fill the tank is insufficient to fill said part of the chamber located below said parts of said upwardly extending portion of the venting pipe.
Claim 5
Dependent Claim
164 words
A liquid tank structure comprising a tank having an upper part and a lower part, a filling piping having a bottom end connected to the lower part of the tank and a top inlet end, a venting pipe which is connected to the upper part of the tank, the venting pipe having an upper portion adjacent the tank, a lower portion constituting a liquid trap and a generally upwardly extending portion communicating with the interior of the filling piping adjacent said top inlet end, a chamber inserted in the upwardly extending portion of the venting pipe, the chamber having a lower part, and a conduit including a constricted passage connecting the lower part of the chamber to the tank, the volume of a part of the chamber located below parts of the upwardly extending Portion of the venting pipe between which the chamber is inserted being equal to at least the volume of the lower portion of the venting pipe which constitutes the trap.
Claim 6
Dependent Claim
164 words
A liquid tank structure comprising a tank having an upper part and a lower part, a filling piping having a bottom end connected to the lower part of the tank and a top inlet end, a venting pipe which is connected to the upper part of the tank, the venting pipe having an upper portion adjacent the tank, a lower portion constituting a liquid trap and a generally upwardly extending portion communicating with the interior of the filling piping adjacent said top inlet end, a chamber inserted in the upwardly extending portion of the venting pipe, the chamber having a lower part, and a conduit including a constricted passage connecting the lower part of the chamber to the tank, the volume of a part of the chamber located below parts of the upwardly extending Portion of the venting pipe between which the chamber is inserted being equal to at least the volume of the lower portion of the venting pipe which constitutes the trap.
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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |