Patent US3708709A successfully refreshed from Google Patents.
Patent US3717191A successfully refreshed from Google Patents.
US3717191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic tire with a breaker of variable stiffness
Assignee: Dunlop Co Ltd
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Filing: 1970-09-08
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Granted: 1973-02-20
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Expires: 1990-09-08
Abstract
Abstract A PNUEMATIC TIRE OF THE KIND HAVING A CARCASS, TREAD AND BREAKER ASSEMBLY. THE BREAKER ASSEMBLY COMPRISES AT LEAST ONE LAYER OF CORDS OF HIGH BIAS ANGLE AND AT LEAST TWO LAYERS OF CORDS OF LOW BIAS ANGLE. A LAYER OF RUBBER COMPOUND OF WIDTH LESS THAN THE ADJACENT BREAKER LAYERS IS INTERPOSED BETWEEN A PAIR OF THE BREAKER LAYERS, PREFERABLY BETWEEN THE HIGH BIAS ANGLE LAYER AND AN ADJACENT LOW BIAS ANGLE LAYER.
Inventors
- 👤 W Harrington
- 👤 A Grossett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:08
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/18; B60C9/20; B60C2009/1871; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10765; Y10T152/10792; Y10T152/1081
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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |