US3703165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel tank vent control
Assignee: Motors Liquidation Co
•
Filing: 1971-07-15
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Granted: 1972-11-21
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Expires: 1991-07-15
Abstract
Abstract In an internal combustion engine powered vehicle, fuel vapors are vented from the fuel tank to the engine induction system. The tank vent line is controlled by a valve operated both by a float responsive to the fuel level and by a solenoid energized through the engine ignition switch.
Inventors
- 👤 Kai H Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:09
CPC Classifications
F; F02; F02M; F02M25/00; F02M25/08; F02M25/0836; F02M2025/0845; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/309; Y10T137/3099
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
168 words
A fuel tank vent control valve assembly comprising: means defining an orifice for venting fuel vapor from the top of a tank and a valve seat surrounding said orifice, a vertically reciprocable valve member engageable with said valve seat to prevent fluid flow through said orifice, and means downwardly biasing said valve member out of engagement with said valve seat, a float member responsive to the level of liquid fuel in the tank and having a pivoted float arm extending laterally beneath said valve member whereby upward movement of said float member will cause said float arm to lift said valve member into engagement with said valve seat, and a solenoid having an armature extending beneath said valve member and means upwardly biasing said armature whereby said armature lifts said valve member into engagement with said valve seat, thereby overriding control of said valve member by said float member, said solenoid being energizable to lower said armature and permit control of said valve member by said float member.
Claim 2
Dependent Claim
168 words
A fuel tank vent control valve assembly comprising: means defining an orifice for venting fuel vapor from the top of a tank and a valve seat surrounding said orifice, a vertically reciprocable valve member engageable with said valve seat to prevent fluid flow through said orifice, and means downwardly biasing said valve member out of engagement with said valve seat, a float member responsive to the level of liquid fuel in the tank and having a pivoted float arm extending laterally beneath said valve member whereby upward movement of said float member will cause said float arm to lift said valve member into engagement with said valve seat, and a solenoid having an armature extending beneath said valve member and means upwardly biasing said armature whereby said armature lifts said valve member into engagement with said valve seat, thereby overriding control of said valve member by said float member, said solenoid being energizable to lower said armature and permit control of said valve member by said float member.
Claim 3
Dependent Claim
168 words
A fuel tank vent control valve assembly comprising: means defining an orifice for venting fuel vapor from the top of a tank and a valve seat surrounding said orifice, a vertically reciprocable valve member engageable with said valve seat to prevent fluid flow through said orifice, and means downwardly biasing said valve member out of engagement with said valve seat, a float member responsive to the level of liquid fuel in the tank and having a pivoted float arm extending laterally beneath said valve member whereby upward movement of said float member will cause said float arm to lift said valve member into engagement with said valve seat, and a solenoid having an armature extending beneath said valve member and means upwardly biasing said armature whereby said armature lifts said valve member into engagement with said valve seat, thereby overriding control of said valve member by said float member, said solenoid being energizable to lower said armature and permit control of said valve member by said float member.
Claim 4
Dependent Claim
168 words
A fuel tank vent control valve assembly comprising: means defining an orifice for venting fuel vapor from the top of a tank and a valve seat surrounding said orifice, a vertically reciprocable valve member engageable with said valve seat to prevent fluid flow through said orifice, and means downwardly biasing said valve member out of engagement with said valve seat, a float member responsive to the level of liquid fuel in the tank and having a pivoted float arm extending laterally beneath said valve member whereby upward movement of said float member will cause said float arm to lift said valve member into engagement with said valve seat, and a solenoid having an armature extending beneath said valve member and means upwardly biasing said armature whereby said armature lifts said valve member into engagement with said valve seat, thereby overriding control of said valve member by said float member, said solenoid being energizable to lower said armature and permit control of said valve member by said float member.
Claim 5
Dependent Claim
47 words
The control valve assembly of claim 1 wherein said valve member has a radially outwardly extending flange, wherein said armature surrounds said valve member and has a radially inwardly extending flange disposed beneath said valve member flange, and wherein said solenoid has a coil surrounding said armature.
Claim 6
Dependent Claim
56 words
The control valve assembly of claim 1 wherein said armature extends laterally from a first portion beneath said valve member through a pivot portion to a second portion disposed beneath a solenoid coil and wherein said armature biasing means downwardly biases said second portion of said armature to upwardly bias said first portion of said armature.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |