Patent US3752135A successfully refreshed from Google Patents.
US3752135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle fuel tank venting system
Assignee: Motors Liquidation Co
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Filing: 1971-11-26
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Granted: 1973-08-14
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Expires: 1991-11-26
Abstract
Abstract A venting system for a vehicle fuel tank has a vent line which extends a selected distance above, below, and to either side of the fuel tank to contain liquid fuel against loss to the atmosphere irrespective of the attitude of the vehicle.
Inventors
- 👤 D Peterson
- 👤 F Wyczalek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:52
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/035; B60K15/03504; F; F02; F02M; F02M25/00; F02M25/08; F02M25/089; Y; Y10; Y10S; Y10S261/00; Y10S261/50; Y10S261/67
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
134 words
A venting system for a vehicle fuel tank having an upper wall, a lower wall, and a pair of end walls, said venting system comprising means defining a vent opening in said upper wall and a vent line connected to said vent opening and extending in one direction transverse to the longitudinal axis of the vehicle at least a selected distance beyond one of said end walls, extending in the direction opposite to said one direction at least said selected distance beyond the other of said end walls, extending vertically at least said selected distance above said upper wall, and extending vertically at least said selected distance below said lower wall, said venting system thereby containing liquid fuel against loss to the atmosphere irrespective of the attitude of said vehicle about its longitudinal axis.
Claim 2
Dependent Claim
134 words
A venting system for a vehicle fuel tank having an upper wall, a lower wall, and a pair of end walls, said venting system comprising means defining a vent opening in said upper wall and a vent line connected to said vent opening and extending in one direction transverse to the longitudinal axis of the vehicle at least a selected distance beyond one of said end walls, extending in the direction opposite to said one direction at least said selected distance beyond the other of said end walls, extending vertically at least said selected distance above said upper wall, and extending vertically at least said selected distance below said lower wall, said venting system thereby containing liquid fuel against loss to the atmosphere irrespective of the attitude of said vehicle about its longitudinal axis.
Claim 3
Dependent Claim
27 words
The venting system of cliam 1 wherein said vent line extends to a fuel vapor storage unit to thereby contain fuel vapor against loss to the atmosphere.
Claim 4
Dependent Claim
27 words
The venting system of cliam 1 wherein said vent line extends to a fuel vapor storage unit to thereby contain fuel vapor against loss to the atmosphere.
Claim 5
Dependent Claim
55 words
The venting system of claim 1 which includes a liquid-vapor separator dome member secured to and extending above said upper wall to thereby contain liquid fuel against surging from said tank to said vent line, said dome member defining said vent opening and comprising that portion of said vent line extending above said upper wall.
Claim 6
Dependent Claim
227 words
A venting system for a vehicle fuel tank having an upper wall, a lower wall, a forward wall, a rearward wall, and a pair of end walls, said venting system comprising means defining a vent opening in said upper wall and a vent line connected to said vent opening, said vent line including a horizontal portion forward of and higher than said tank upper wall, a horizontal portion rearward of said tank rear wall and higher than said tank upper wall, a vertical portion forward of said tank front wall, a horizontal portion forward of said tank front wall and lower than said tank lower wall, a vertical portion outwardly of one of said tank end walls, a horizontal portion outwardly of said one tank end wall and higher than said tank upper wall and approximately midway between said tank front and rear walls, another horizontal portion forward of said tank front wall and lower than said tank lower wall, a vertical portion outwardly of the other of said tank end walls, a horizontal portion outwardly of said other tank end wall and higher than said tank upper wall and approximately midway between said tank front and rear walls, and a portion lower than said tank lower wall, said venting system thereby containing liquid fuel against loss to the atmosphere irrespective of the attitude of said vehicle.
Claim 7
Dependent Claim
227 words
A venting system for a vehicle fuel tank having an upper wall, a lower wall, a forward wall, a rearward wall, and a pair of end walls, said venting system comprising means defining a vent opening in said upper wall and a vent line connected to said vent opening, said vent line including a horizontal portion forward of and higher than said tank upper wall, a horizontal portion rearward of said tank rear wall and higher than said tank upper wall, a vertical portion forward of said tank front wall, a horizontal portion forward of said tank front wall and lower than said tank lower wall, a vertical portion outwardly of one of said tank end walls, a horizontal portion outwardly of said one tank end wall and higher than said tank upper wall and approximately midway between said tank front and rear walls, another horizontal portion forward of said tank front wall and lower than said tank lower wall, a vertical portion outwardly of the other of said tank end walls, a horizontal portion outwardly of said other tank end wall and higher than said tank upper wall and approximately midway between said tank front and rear walls, and a portion lower than said tank lower wall, said venting system thereby containing liquid fuel against loss to the atmosphere irrespective of the attitude of said vehicle.
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |