US3682345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Threaded container closure
Assignee: Graham Packaging Plastic Products Inc
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Filing: 1970-06-15
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Granted: 1972-08-08
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Expires: 1990-06-15
Abstract
Abstract A threaded container closure assembly having at least one element made of a resilient plastic material. Threads are provided on one element which are received in corresponding recesses provided on the other closure element. A plurality of integrally formed projections are provided on one of the elements to provide increased frictional engagement between the closure elements.
Inventors
- 👤 William A Baugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:04
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/02; B65D1/0223; B65D1/023; B65D1/0246; B65D41/00; B65D41/02; B65D41/04; B65D41/0471
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
In a container and closure therefor, the combination comprising: a hollow upstanding neck portion on said container; a spiral screw thread integrally formed on said neck portion; a plurality of integrally formed, triangularly shaped projections having an included angle of from about 45* to about 90* projecting from the underside of said spiral screw thread, said projections having an arcuate shaped outer end; a closure member having a top portion and a depending skirt portion, said skirt portion having a continuous spiral groove in its interior wall adapted to receive said spiral screw thread and said projections; and at least one of the group consisting of said container and said closure member being formed of a resilient plastic material whereby either said projections or said spiral groove in said closure member are deformed by cold flow to produce an interlocking between said container and said closure member thereby preventing leakage between said container and said closure member.
Claim 2
Dependent Claim
157 words
In a container and closure therefor, the combination comprising: a hollow upstanding neck portion on said container; a spiral screw thread integrally formed on said neck portion; a plurality of integrally formed, triangularly shaped projections having an included angle of from about 45* to about 90* projecting from the underside of said spiral screw thread, said projections having an arcuate shaped outer end; a closure member having a top portion and a depending skirt portion, said skirt portion having a continuous spiral groove in its interior wall adapted to receive said spiral screw thread and said projections; and at least one of the group consisting of said container and said closure member being formed of a resilient plastic material whereby either said projections or said spiral groove in said closure member are deformed by cold flow to produce an interlocking between said container and said closure member thereby preventing leakage between said container and said closure member.
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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |