US3913784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing closure apparatus
Assignee: Individual
•
Filing: 1974-05-15
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Granted: 1975-10-21
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Expires: 1994-05-15
Abstract
Abstract An apparatus is disclosed embodied as a sealing closure structure for a refilling port in a fuel tank. A closure member is supported and guided by an elongated mounting mechanism for aligned motion in relation to the port. A plurality of pairs of pivotally-connected arms are affixed to be urged by a spring means and exert a force on the closure member, the effective component of which varies to compensate the changing spring force. The structure affords an improved spring-closure mechanism to provide a force between any of a variety of relatively-movable members.
Inventors
- 👤 David B Ayres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:15
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/54; B65D90/56; B65D88/00; B65D88/54
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
143 words
A closure structure for a receptacle, as in a fluid tank, comprising: a closure member to be received to close said receptacle; plural pairs of first and second arms, interconnected at a pivot junction for relative pivotal motion; means for connecting each of said first arms to said receptacle at spaced-apart locations removed from said pivot junction; means for coupling each of said second arms to said closure member at spaced-aparat locations removed from said pivot junction; guide means for said closure member, to limit movement thereof in relation to said first member to a single direction whereby to vary the angular relationship between said first and second arms at said pivot junction; and spring means for exerting a force directly between said pairs of arms to provide a position biasing force for moving said closure member into closing relationship with said receptacle.
Claim 2
Dependent Claim
143 words
A closure structure for a receptacle, as in a fluid tank, comprising: a closure member to be received to close said receptacle; plural pairs of first and second arms, interconnected at a pivot junction for relative pivotal motion; means for connecting each of said first arms to said receptacle at spaced-apart locations removed from said pivot junction; means for coupling each of said second arms to said closure member at spaced-aparat locations removed from said pivot junction; guide means for said closure member, to limit movement thereof in relation to said first member to a single direction whereby to vary the angular relationship between said first and second arms at said pivot junction; and spring means for exerting a force directly between said pairs of arms to provide a position biasing force for moving said closure member into closing relationship with said receptacle.
Claim 3
Dependent Claim
28 words
A spring mounting structure according to claim 1 wherein one of said members defines a port and the other of said members defines a closure for said port.
Claim 4
Dependent Claim
27 words
A spring mounting structure according to claim 1 wherein said spring means is integrated between said pair of arms as a unitary structure to provide said interconnection.
Claim 5
Dependent Claim
39 words
A spring mounting structure according to claim 1 wherein said spring means comprises a coil spring affixed to said pivot junction and extending normally to said single direction of movement so as to bisect the angle between said arms.
Claim 6
Dependent Claim
21 words
An apparatus according to claim 1 wherein said spring means is affixed to bisect the angle between said pair of arms.
Claim 7
Dependent Claim
20 words
An apparatus according to claim 5 wherein said spring means comprises a coil spring affixed between pairs of said arms.
Claim 8
Dependent Claim
26 words
An apparatus according to claim 5 wherein one of said members defines a port and the other of said members defines a closure for said port.
Claim 9
Dependent Claim
20 words
A structure according to claim 1 wherein said guide means comprises an elongated rod means extending in said single direction.
Claim 10
Dependent Claim
20 words
A structure according to claim 8 wherein said guide means further includes a bushing disposed on said elongated rod means.
Claim 11
Dependent Claim
16 words
A structure according to claim 9 wherein said bushing is loosely coupled to said second member.
References Cited (Backward Citations)
US1433912A
Cited
US2411505A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |