Patent US3247038A successfully refreshed from Google Patents.
US3247038A
Expired / Lapsed
US
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Method of vulcanizing belts
Assignee: Goodyear Tire and Rubber Co
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Filing: 1962-05-04
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Granted: 1966-04-19
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Expires: 1982-05-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Louis Seelbach Kraft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:43
CPC Classifications
B; B29; B29D; B29D29/00; B29C; B29C43/00; B29C43/22; B29C43/32; B29C43/44; B29C43/48; B29D29/06; B29K; B29K2021/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A METHOD OF MANUFACTURING A BELT MADE OF RUBBER AND HEAT-SHRINKABLE NYLON CORD WHICH COMPRISES, FORMING A RUBBER BELT CARCASS REINFORCED WITH AT LEAST ONE PLY OF PARALLEL NYLON CORDS WHICH EXTEND LONGITUDINALLY OF THE BELT, CURING SAID BELT UNDER HEAT AND PRESSURE WHILE THE BELT IS STRETCHED BETWEEN 2 AND 18 PERCENT OF ITS ORIGINAL LENGTH AND THEREAFTER COOLING THE BELT TO A TEMPERATURE AT WHICH SAID CORDS HAVE NO APPRECIABLE SHRINKAGE, SAID BELT BEING STRETCHED DURING SAID COOLING OPERATION TO AT LEAST THE SAME EXTENT AS DURING THE VULCANIZING OPERATION.
Claim 2
Independent Claim
92 words
A METHOD OF MANUFACTURING A BELT MADE OF RUBBER AND HEAT-SHRINKABLE NYLON CORD WHICH COMPRISES, FORMING A RUBBER BELT CARCASS REINFORCED WITH AT LEAST ONE PLY OF PARALLEL NYLON CORDS WHICH EXTEND LONGITUDINALLY OF THE BELT, CURING SAID BELT UNDER HEAT AND PRESSURE WHILE THE BELT IS STRETCHED BETWEEN 2 AND 18 PERCENT OF ITS ORIGINAL LENGTH AND THEREAFTER COOLING THE BELT TO A TEMPERATURE AT WHICH SAID CORDS HAVE NO APPRECIABLE SHRINKAGE, SAID BELT BEING STRETCHED DURING SAID COOLING OPERATION TO AT LEAST THE SAME EXTENT AS DURING THE VULCANIZING OPERATION.
References Cited (Backward Citations)
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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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |