Patent US1728391A successfully refreshed from Google Patents.
US3553307A
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Treatment of polyester tire cord
Assignee: Goodyear Tire and Rubber Co
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Filing: 1968-04-24
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Granted: 1971-01-05
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Expires: 1988-04-24
Abstract
Abstract TREATING POLYESTER CORD REINFORCEMENT FOR TIRES BY SUBJECTING THE TIRE CORD TO A FIRST STAGE OF HEAT TREATMENT AT A TEMPERATURE IN EXCESS OF 440*F. AND FOR A PERIOD OF 30 TO 70 SECONDS WHILE STRETCHING THE CORD FROM 2 TO 10 PERCENT OF ITS ORIGINAL LENGTH, FOLLOWED BY A SECOND STAGE OF HEAT TREATMENT AT A TEMPERATURE ALSO IN EXCESS OF 440*F., AND PREFERABLY HIGHER THAN THE TEMPERATURE OF THE FIRST STAGE, WITH AN EXPOSURE TIME OF 30 TO 70 SECONDS AND WITH THE CORD BEING PERMITTED TO SHRINK BY 30 TO 50 PERCENT OF THE AMOUNT THAT IT WAS STRETCHED IN THE FIRSTSTAGE TREATMENT. AN IMPROVED TIRE CORD RESULTS.
Inventors
- 👤 Frederick J Kovac
- 👤 Grover W Rye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:07
CPC Classifications
D; D06; D06C; D06C29/00; B; B29; B29D; B29D30/00; B29D30/06; B29D30/38; B29D30/40; B29D30/44; B60; B60C; B60C9/00; B60C9/0042; D02; D02G; D02G3/00; D02G3/44; D02G3/48; D02J; D02J1/00; D02J1/22; D02J1/224; D10; D10B; D10B2331/00; D10B2331/04; Y; Y10; Y10S; Y10S57/00; Y10S57/902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |