US3724708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-vacuum relief fuel filler cap
Assignee: F AND E Manufacturing CO
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Filing: 1971-08-25
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Granted: 1973-04-03
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Expires: 1991-08-25
Abstract
Abstract A pressure-vacuum relief fuel filler cap assembly comprising a cover, a locking cup fixed to said cover, and a valve assembly fixed on said locking cup. The valve assembly comprises interfitting upper and lower valve body members made of plastic. A pressure relief valve and associated seat and a vacuum relief valve and associated seat are provided within the valve assembly. The pressure relief valve and vacuum relief valve include a common valve member.
Inventors
- 👤 R Burgess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:38
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/04; B60K15/0406; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7771
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
223 words
A pressure-vacuum relief fuel filler cap comprising a cover, a downwardly opening locking cup fixed to the lower face of said cover generally centrally thereof, a gasket and diaphragm ring interposed between said cover and said locking cup for providing a resilient force on the end of a filler neck, a valve assembly fixed in said locking cup, said valve assembly comprising a hollow upper valve body having A downwardly extending peripheral wall, a hollow lower valve body having an upwardly extending peripheral wall, means frictionally holding said lower valve body peripheral wall on said upper valve body peripheral wall, a pressure relief valve and associated valve seat within said valve assembly, and a vacuum relief valve and associated valve seat within said valve assembly, said relief and vacuum valves including a diaphragm-like valve member having an annular outer valving portion and an annular inner valving portion connected by a flexible intermediate annular portion, said lower valve body having a first valve seat against which the outer annular portion of said valve member is seated, means yieldingly urging said first valving portion against said first valve seat, said upper valve body having a second valve seat radially inwardly from its peripheral wall which is engaged by said second valving portion, and means yieldingly urging said second valving portion against said second valve seat.
Claim 2
Dependent Claim
223 words
A pressure-vacuum relief fuel filler cap comprising a cover, a downwardly opening locking cup fixed to the lower face of said cover generally centrally thereof, a gasket and diaphragm ring interposed between said cover and said locking cup for providing a resilient force on the end of a filler neck, a valve assembly fixed in said locking cup, said valve assembly comprising a hollow upper valve body having A downwardly extending peripheral wall, a hollow lower valve body having an upwardly extending peripheral wall, means frictionally holding said lower valve body peripheral wall on said upper valve body peripheral wall, a pressure relief valve and associated valve seat within said valve assembly, and a vacuum relief valve and associated valve seat within said valve assembly, said relief and vacuum valves including a diaphragm-like valve member having an annular outer valving portion and an annular inner valving portion connected by a flexible intermediate annular portion, said lower valve body having a first valve seat against which the outer annular portion of said valve member is seated, means yieldingly urging said first valving portion against said first valve seat, said upper valve body having a second valve seat radially inwardly from its peripheral wall which is engaged by said second valving portion, and means yieldingly urging said second valving portion against said second valve seat.
Claim 3
Dependent Claim
18 words
The combination set forth in claim 1 wherein said means interconnecting said valve bodies comprises interfitting telescoping portions.
Claim 4
Dependent Claim
20 words
The combination set forth in claim 2 wherein said telescoping portions include interengaging peripheral beads which snap over one another.
Claim 5
Dependent Claim
19 words
The combination set forth in claim 1 wherein said upper and lower valve bodies are made of plastic material.
Claim 6
Dependent Claim
29 words
The combination set forth in claim 1 including a spring member engaging said locking cup and said lower valve body to retain said valve assembly within said locking cup.
Claim 7
Dependent Claim
31 words
The combination set forth in claim 1 wherein said intermediate flexible annular portion has a lesser thickness than said outer and inner first and second valving portions of said valve member.
Claim 8
Dependent Claim
57 words
The combination set forth in claim 1 including means on the periphery of said first valving portion, said means yieldingly urging said valving portion against said first valve seat comprising a compression spring interposed between said upper valve body and said valving portion, and means on the periphery of said first valving portion laterally locating said spring.
Claim 9
Dependent Claim
18 words
The combination set forth in claim 7 wherein said means for guiding said spring comprises an annular member.
Claim 10
Dependent Claim
52 words
The combination set forth in claim 1 wherein said means yieldingly urging said second valving portion against said second valve seat comprises a compression spring interposed between said lower valve body and the second valving portion, and means on the inner periphery of said second valving portion for guiding the spring laterally.
Claim 11
Dependent Claim
22 words
The combination set forth in claim 9 wherein said means for guiding said spring comprises an integral portion of said valve member.
Claim 12
Dependent Claim
17 words
The combination set forth in claim 1 wherein said valve member is made of uniformly thick material.
Claim 13
Dependent Claim
37 words
The combination set forth in claim 1 including an annular spring member frictionally engaging the inner portion of said locking cup and said lower valve body and holding said valve assembly in position in said locking cup.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |