Patent US1860529A successfully refreshed from Google Patents.
US3303243A
Expired / Lapsed
US
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Process for producing heat-recoverable articles
Assignee: Raychem Corp
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Filing: 1963-02-18
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Granted: 1967-02-07
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Expires: 1983-02-18
Abstract
No abstract record available.
Inventors
- 👤 John R Hughes
- 👤 Richard W Muchmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:48
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C49/00; B29C49/42; B29C49/64; B29C49/6409; B29C49/6418; B29C49/72; B29C61/00; B29C61/06; B29C61/0608; B29C61/08; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/70; B29C66/73; B29C66/737; B29C66/7371; B29C66/73715; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/818; B29C66/8181; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/8351; B29C66/83511; B29C48/00; B29C48/001; B29C48/0022; B29C48/03; B29C48/05; B29C48/06; B29C48/09; B29C48/12; B29C48/13; B29C49/48; B29C49/48185; B29C66/71; B29C66/7377; B29C66/73773; B29C66/73774; B29K; B29K2105/00; B29K2105/04; B29K2105/045; B29K2995/00; B29K2995/0037; B29K2995/0049; B29L; B29L2023/00; B29L2023/001; B29L2023/005; B29L2031/00; B29L2031/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN A PROCESS FOR THE PRODUCTION OF HEAT-SHRINKABLE END CAPS, THE STEPS FOR FORMING A TUBE OF A THERMOPLASTIC POLYMERIC MATERIAL, HEAT-SEALING SPACED WALL PORTIONS OF THE TUBE TO FORM A PLURALITY OF ISOLATED TUBULAR PORTIONS HAVING AN INITIAL DIAMETER, CROSS-LINKING THE POLYMERIC MATERIAL OF SAID TUBULAR PORTIONS, HEATING THE TUBULAR PORTIONS TO A TEMPERATURE ABOVE THE CRYSTALLINE MELTING POINT, EXPANDING BY THE CREATION OF A DIFFERENTIAL PRESSURE BETWEEN THE INSIDE AND OUTSIDE OF THE TUBING, AND COOLING SAID TUBULAR PORTIONS WHILE HOLDING THEM IN THE EXPANDED CONDITION TO PRODUCE HEAT-SHRINKABLE TUBULAR PORTIONS HAVING A FINAL DIAMETER GREATER THAN SAID INITIAL DIAMETER.
Claim 2
Dependent Claim
102 words
IN A PROCESS FOR THE PRODUCTION OF HEAT-SHRINKABLE END CAPS, THE STEPS FOR FORMING A TUBE OF A THERMOPLASTIC POLYMERIC MATERIAL, HEAT-SEALING SPACED WALL PORTIONS OF THE TUBE TO FORM A PLURALITY OF ISOLATED TUBULAR PORTIONS HAVING AN INITIAL DIAMETER, CROSS-LINKING THE POLYMERIC MATERIAL OF SAID TUBULAR PORTIONS, HEATING THE TUBULAR PORTIONS TO A TEMPERATURE ABOVE THE CRYSTALLINE MELTING POINT, EXPANDING BY THE CREATION OF A DIFFERENTIAL PRESSURE BETWEEN THE INSIDE AND OUTSIDE OF THE TUBING, AND COOLING SAID TUBULAR PORTIONS WHILE HOLDING THEM IN THE EXPANDED CONDITION TO PRODUCE HEAT-SHRINKABLE TUBULAR PORTIONS HAVING A FINAL DIAMETER GREATER THAN SAID INITIAL DIAMETER.
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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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |