US3746209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closing device for gas and liquid containers
Assignee: Volkswagen AG
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Filing: 1971-09-02
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Granted: 1973-07-17
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Expires: 1991-09-02
Abstract
Abstract A cap for closing the inlet pipe of a gas and/or liquid container. The cap includes a number of interacting parts which are operative to compress a seal arranged between the cap and the inlet pipe without sliding contact when the cap is closed, and operative to release the seal without sliding contact when the cap is opened.
Inventors
- 👤 N Urban
- 👤 H Richters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:07
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/04; B60K15/0406
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
169 words
A device for closing the inlet pipe of a container, said device including a cap comprising, in combination: a. a closing member having lug means at its outer edge for engaging cutouts in the inlet pipe to hold said closing member on said inlet pipe when said closing member is rotated in a closing direction; b. a screw-shaped insert member, attached to said closing member on the side thereof which faces said inlet pipe when said closing member is engaged with said inlet pipe, said insert member having a thread that turns inward in a direction opposite to said closing direction of said closing member; and c. a seal pressing member, in threaded engagement with said insert member, whereby said seal pressing member is operative to compress a seal arranged between the cap and the inlet pipe without sliding contact when said closing member is rotated in said closing direction and operative to release said seal without sliding contact when said closing member is rotated in said opposite direction.
Claim 2
Independent Claim
169 words
A device for closing the inlet pipe of a container, said device including a cap comprising, in combination: a. a closing member having lug means at its outer edge for engaging cutouts in the inlet pipe to hold said closing member on said inlet pipe when said closing member is rotated in a closing direction; b. a screw-shaped insert member, attached to said closing member on the side thereof which faces said inlet pipe when said closing member is engaged with said inlet pipe, said insert member having a thread that turns inward in a direction opposite to said closing direction of said closing member; and c. a seal pressing member, in threaded engagement with said insert member, whereby said seal pressing member is operative to compress a seal arranged between the cap and the inlet pipe without sliding contact when said closing member is rotated in said closing direction and operative to release said seal without sliding contact when said closing member is rotated in said opposite direction.
Claim 3
Dependent Claim
41 words
The closing device defined in claim 1, wherein said closing member is cup-shaped and has approximately cylindrical vertical sides terminating in said outer edge, and wherein said lug means are arranged on said cylindrical vertical sides adjacent to said outer edge.
Claim 4
Dependent Claim
41 words
The closing device defined in claim 1, wherein said inlet pipe is provided with a closing stop to arrest rotation of said cap in said closing direction and an opening stop to arrest rotation of said cap in said opposite direction.
Claim 5
Dependent Claim
33 words
The closing device defined in claim 1, further comprising a centering pipe arranged within and attached to said inlet pipe; wherein said seal is arranged between said centering pipe and said inlet pipe.
Claim 6
Dependent Claim
44 words
The closing device defined in claim 1, wherein said closing member has vertically extending sides and wherein said seal pressing member is hat-shaped and has a vertically extending outer edge; whereby said vertical outer edge is arranged within and guided by said vertical sides.
Claim 7
Dependent Claim
25 words
The closing device defined in claim 5, wherein said closing member and said seal pressing member each have a lug which provides a mutual stop.
Claim 8
Dependent Claim
20 words
The closing device defined in claim 5, wherein the seal contacting surface of said seal pressing member is conically shaped.
Claim 9
Dependent Claim
21 words
The closing device defined in claim 1, further comprising a spring arranged between said closing member and said seal pressing member.
References Cited (Backward Citations)
US3386611A
Cited
US3640425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |