US2802513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making strain-free gaskets
Assignee: Bridgestone Firestone Inc
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Filing: 1955-12-06
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Granted: 1957-08-13
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Expires: 1975-12-06
Abstract
No abstract record available.
Inventors
- 👤 Chester A Stoeckel
- 👤 Charles E Mudd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:39
CPC Classifications
B; B29; B29C; B29C69/00; B29C35/00; B29C35/02; B29C35/0227; B29C59/00; B29C59/02; B29C59/021; B29D; B29D99/00; B29D99/0053; B29D99/0082; B29C48/00; B29C48/001; B29C48/0022; B29C48/03; B29C48/07; B29C48/08; B29C48/15; B29K; B29K2009/00; B29K2021/00; B29L; B29L2031/00; B29L2031/26; B29L2031/709
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
98 words
A METHOD OF MAKING AN ENDLESS STRAIN-FREE GASKET OF VULCANIZED RUBBERY PLYMERIC MATERIAL COMPRISING THE STEPS OF FORMING A SHEET OF SAID UNVULCANIZED VULCANIZABLE RUBBER MATERIAL HAVING A THICKNESS GREATER THAN THE THICKNESS OF SAID GASKET, WRAPPING SAID SHEET AROUND A MANDREL HAVING AN OUTSIDE DIAMETER OF LESS EXTENT THAN THE INSIDE DIAMETER OF THE ENDLESS GASKET TO FORM A CYLINDER, SAID CYLINDER HAVING AN OUTSIDE DIAMETER GREATER THAN THE OUTSIDE DIAMETER OF THE GASKET, VULCANIZING SAID CYLINDER, REMOVING SAID CYLINDER FROM THE MANDREL AND ALLOWING IT TO COOL AND REMOVE INTERNAL STRAIN, PEELING RUBBER FROM THE OUTER
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) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |