US3949897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure for container
Assignee: Individual
•
Filing: 1973-08-07
•
Granted: 1976-04-13
•
Expires: 1993-08-07
Abstract
Abstract A closure to be slidably fitted in a container to exclude air from the surface of the material in said container or to be withdrawn to allow access to said material, includes a disc-like closure body, an air vent through said body, a plug to close said vent, a flexible handle attached to said body, characterized by a connection between said plug and said handle whereby force on said handle to withdraw said closure retracts said plug from said vent.
Inventors
- 👤 James Anthony Carpenter Shaw
- 👤 Eva Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:59
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/16; B65D51/1672; B65D51/1683; Y; Y10; Y10S; Y10S220/00; Y10S220/27
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
152 words
A disc-like closure slidable within a container for sealing the same at a level above and adjacent to the contents of the container, including; a closure body in the form of a flat disc integrally formed with an annular peripheral rim the axis of which is perpendicular to the plane of said disc, said rim including a relatively short, downwardly depending skirt, said skirt being formed with an outer annular bead for resiliently engaging the interior of a container body for sealing the closure in the container; an air vent through said disc; a retractable plug to close said vent; a flexible handle attached to said disc to slide the closure upwards in said container; and a connection between said handle and said plug, whereby force on said handle in a direction to raise said closure first retracts said plug from said vent and subsequently raises said closure from within said container.
Claim 2
Dependent Claim
152 words
A disc-like closure slidable within a container for sealing the same at a level above and adjacent to the contents of the container, including; a closure body in the form of a flat disc integrally formed with an annular peripheral rim the axis of which is perpendicular to the plane of said disc, said rim including a relatively short, downwardly depending skirt, said skirt being formed with an outer annular bead for resiliently engaging the interior of a container body for sealing the closure in the container; an air vent through said disc; a retractable plug to close said vent; a flexible handle attached to said disc to slide the closure upwards in said container; and a connection between said handle and said plug, whereby force on said handle in a direction to raise said closure first retracts said plug from said vent and subsequently raises said closure from within said container.
Claim 3
Dependent Claim
23 words
The closure of claim 1 further including a plurality of radial reinforcing ribs interconnecting said disc and said rib to reinforce the same.
Claim 4
Dependent Claim
56 words
A closure as claimed in claim 1, in which said handle includes a flexible strap, an attachment at each end of said strap to said body, said plug being fixed at an intermediate point on said strap, so that with said plug inserted in said vent said strap is flexed on each side of said plug.
Claim 5
Dependent Claim
13 words
A closure as claimed in claim 3, in which said attachments are removable.
Claim 6
Dependent Claim
61 words
A closure as claimed in claim 1, in which said handle in closure-raising position, is arcuate and upstanding from said body, said plug is attached transversely at an intermediate point on said arcuate handle, and said vent is offset from the plane of said handle, so that on said handle being flexed transversely said plug may be inserted in said vent.
References Cited (Backward Citations)
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Cited
DE843350C
Cited
US2657817A
Cited
US2787397A
Cited
FR1086721A
Cited
US2884151A
Cited
US3080088A
Cited
US3212665A
Cited
US3375949A
Cited
US3759416A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |