US4051975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cap for fuel tank
Assignee: Marelli Corp
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Filing: 1977-03-18
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Granted: 1977-10-04
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Expires: 1997-03-18
Abstract
Abstract A cap of a fuel tank comprising a lid member constructed of upper and lower plates to form a passage communicated with the air between both plates, a seating plate underlying said lid member and provided with a plurality of bores circularly arranged in the peripheral portion of the central flat field thereof, a diaphragm of a flexible material underlying said seating plate and provided with a perforation in the central portion thereof and an annular ridge surrounding the perforation on the upside thereof, a valve plate underlying said diaphragm and provided with a perforation in register with the perforation of said diaphragm, a casing disposed at the lowest position in the cap and provided with a perforation in the bottom thereof, the peripheral portion of said diaphragm being fixedly interposed between the peripheral portion or said lower plate with intermediation of said seating plate and the flange portion of said casing, and a coil spring held in said casing and adapted to urge said valve plate upwardly.
Inventors
- 👤 Hidetoshi Ohgida
- 👤 Yoshiharu Sakai
- 👤 Hiroyuki Kawai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:11
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/04; B60K15/0406; Y; Y10; Y10S; Y10S220/00; Y10S220/33
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
168 words
A cap of a fuel tank comprising a lid member constructed of upper and lower plates to form a passage communicated with the air between both plates, a seating plate underlying said lid member and provided with a plurality of bores circularly arranged in the peripheral portion of the central flat field thereof, a diaphragm of a flexible material underlying said seating plate and provided with a perforation in the central portion thereof and an annular ridge surrounding the perforation on the upside thereof, a valve plate underlying said diaphragm and provided with a perforation in register with the perforation of said diaphragm, a casing disposed at the lowest position in the cap and provided with a perforation in the bottom thereof, the peripheral portion of said diaphragm being fixedly interposed between the peripheral portion of said lower plate with intermediation of said seating plate and the flange portion of said casing, and a coil spring held in said casing and adapted to urge said valve plate upwardly.
Claim 2
Dependent Claim
168 words
A cap of a fuel tank comprising a lid member constructed of upper and lower plates to form a passage communicated with the air between both plates, a seating plate underlying said lid member and provided with a plurality of bores circularly arranged in the peripheral portion of the central flat field thereof, a diaphragm of a flexible material underlying said seating plate and provided with a perforation in the central portion thereof and an annular ridge surrounding the perforation on the upside thereof, a valve plate underlying said diaphragm and provided with a perforation in register with the perforation of said diaphragm, a casing disposed at the lowest position in the cap and provided with a perforation in the bottom thereof, the peripheral portion of said diaphragm being fixedly interposed between the peripheral portion of said lower plate with intermediation of said seating plate and the flange portion of said casing, and a coil spring held in said casing and adapted to urge said valve plate upwardly.
Claim 3
Dependent Claim
73 words
A cap according to claim 1, wherein said casing has a flange and a skirt extending from the flange, and the skirt of said casing is fixedly secured with calks to the skirt of said lower plate of said lid member in engagement with the inner face of the latter skirt so that the peripheral edges of the seating plate and the diaphragm are firmly clamped between said casing and said lower plate.
Claim 4
Dependent Claim
47 words
A cap according to claim 1, wherein in the surroundings of the central portion of said lid member at which said upper and lower plates are fixedly secured to each other, an annular packing and an annular spring urging downwardly the packing are interposed between both plates.
Claim 5
Dependent Claim
25 words
A cap according to claim 1, wherein said seating plate is provided in the surroundings of the central flat field thereof with an annular recess.
Claim 6
Dependent Claim
22 words
A cap according to claim 1, wherein said diaphragm is provided in surroundings of said annular ridge thereof with an annular recess.
Claim 7
Dependent Claim
13 words
A cap according to claim 1, wherein said diaphragm is made of rubber.
Claim 8
Dependent Claim
11 words
A cap according to claim 1, wherein said casing is cup-shaped.
Claim 9
Dependent Claim
18 words
A cap according to claim 1, wherein said valve plate has a peripheral skirt for grasping said spring.
References Cited (Backward Citations)
US3724707A
Cited
US3938692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-03 | 1981-04-04 | 1981-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-03 | 1985-04-04 | 1985-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-03 | 1989-04-04 | 1989-10-04 | $7700.00 | Window Closed / Lapsed |