Patent US2750322A successfully refreshed from Google Patents.
US2750322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasket and method of making same
Assignee: Crown Cork and Seal Co Inc
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Filing: 1951-03-20
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Granted: 1956-06-12
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Expires: 1971-03-20
Abstract
No abstract record available.
Inventors
- 👤 Giles B Cooke
- 👤 William C Rainer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:15
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/104; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/1057; Y10T428/00; Y10T428/21; Y10T428/215; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24942; Y10T428/24983; Y10T428/31504; Y10T428/31826; Y10T428/31833; Y10T428/31837; Y10T428/31855; Y10T428/31909; Y10T428/31924; Y10T428/31928
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
58 words
A GASKET PROVIDED WITH A PASSAGE AND HAVING A RELATIVELY HARD UPPER PORTION AND A LOWER RELATIVELY SOFTER PORTION, SAID PORTIONS EACH INCLUDING ESSENTIALLY A RUBBERY POLYMERIC COMPOUND, WAX IN MINOR PORTION OF THE TOTAL COMPOSITION AND FILLER AND BEING VULCANIZED TOGETHER, THE UPPER SURFACE BEING SMOOTH AND ABRASION RESISTANT AND THE LOWER SURFACE BEING SOFT AND COMFORABLE.
Claim 2
Dependent Claim
58 words
A GASKET PROVIDED WITH A PASSAGE AND HAVING A RELATIVELY HARD UPPER PORTION AND A LOWER RELATIVELY SOFTER PORTION, SAID PORTIONS EACH INCLUDING ESSENTIALLY A RUBBERY POLYMERIC COMPOUND, WAX IN MINOR PORTION OF THE TOTAL COMPOSITION AND FILLER AND BEING VULCANIZED TOGETHER, THE UPPER SURFACE BEING SMOOTH AND ABRASION RESISTANT AND THE LOWER SURFACE BEING SOFT AND COMFORABLE.
Claim 3
Independent Claim
154 words
THE METHOD OF MAKING A GASKET PROVIDED WITH A PASSAGE AND WHICH COMPRISES PREPARING LAYERS EACH INCLUDING ESSENTIALLY A RUBBERY POLYMERIC COMPOUND, WAX IN A MINOR PORTION OF THE TOTAL COMPOSITION AND FILLER, AND A PLASTIC, THE AMOUNT OF PLASTIC BEING GREATER IN THE UPPER PORTION THAN IN THE LOWER PORTION, SUPERPOSING SAID LAYERS IN A MOLD WITH ONE OF SAID LAYERS WHICH WILL PRODUCE A RELATIVELY HARD COMPOSITION UPON VULCANIZATION FORMING ONE SURFACE, AND ANOTHER OF SAID LAYERS WHICH UPON VULCANIZATION WILL PRODUCE A RELATIVELY SOFTER CONFORMABLE COMPOSITION FORMING THE OTHER SURFACE, CURING SAID LAYERS IN THE MOLD AT A TEMPERATURE OF BETWEEN ABOUT 280* F. AND ABOUT 325* F. AND A PRESSURE OF ABOUT 1000 POUNDS FOR FROM ABOUT TWENTY-FIVE TO THIRTY MINUTES, TO THEREBY VULCANIZE THE LAYERS TOGETHER INTO A UNITARY STRUCTURE, REMOVING THE STRUCTURE FROM THE MOLD AND IMMEDIATELY COOLING THE SAME, AND FORMING A PASSAGE THROUGH THE UNITARY STRUCTURE.
Claim 4
Independent Claim
154 words
THE METHOD OF MAKING A GASKET PROVIDED WITH A PASSAGE AND WHICH COMPRISES PREPARING LAYERS EACH INCLUDING ESSENTIALLY A RUBBERY POLYMERIC COMPOUND, WAX IN A MINOR PORTION OF THE TOTAL COMPOSITION AND FILLER, AND A PLASTIC, THE AMOUNT OF PLASTIC BEING GREATER IN THE UPPER PORTION THAN IN THE LOWER PORTION, SUPERPOSING SAID LAYERS IN A MOLD WITH ONE OF SAID LAYERS WHICH WILL PRODUCE A RELATIVELY HARD COMPOSITION UPON VULCANIZATION FORMING ONE SURFACE, AND ANOTHER OF SAID LAYERS WHICH UPON VULCANIZATION WILL PRODUCE A RELATIVELY SOFTER CONFORMABLE COMPOSITION FORMING THE OTHER SURFACE, CURING SAID LAYERS IN THE MOLD AT A TEMPERATURE OF BETWEEN ABOUT 280* F. AND ABOUT 325* F. AND A PRESSURE OF ABOUT 1000 POUNDS FOR FROM ABOUT TWENTY-FIVE TO THIRTY MINUTES, TO THEREBY VULCANIZE THE LAYERS TOGETHER INTO A UNITARY STRUCTURE, REMOVING THE STRUCTURE FROM THE MOLD AND IMMEDIATELY COOLING THE SAME, AND FORMING A PASSAGE THROUGH THE UNITARY STRUCTURE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |