US3302680A
Expired / Lapsed
US
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Low moisture content pneumatic tire carcass rubberized laminates and vulcanizable rubbery polymers used therein
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1964-07-30
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Granted: 1967-02-07
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Expires: 1984-07-30
Abstract
No abstract record available.
Inventors
- 👤 Frank C Rote
- 👤 Rollin H Spelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:10
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/0042; B29; B29D; B29D29/00; C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; Y; Y10; Y10S; Y10S524/00; Y10S524/925; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31826; Y10T428/31833
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A VULCANIZABLE CARCASS COMPOSITION FOR PNEUMATIC RUBBER TIRES CONTAINING PER 100 PARTS BY WEIGHT OF RUBBERY POLYMER ABOUT 2 TO 12 PARTS BY WEIGHT OF CAO AND AN AMOUNT OF AL2O3 SUBSTANTIALLY GREATER THAN THE AMOUNT OF CALCIUM OXIDE.
Claim 2
Dependent Claim
120 words
IN A METHOD OF MAKING A TIRE WHEREIN TREAD STOCK, INEXTENSIBLE BEADS AND A CARCASS FORMED OF PLY LAYERS ARE ASSEMBLED TO FORM AN UNCURED TIRE WHICH IS THEN EXPANDED AND CURED IN A VULCANIZING MOLD, THE IMPROVEMENT COMPRISING THE STEPS OF: (A) PREPARING A VULCANIZABLE PLY STOCK COMPOSITION COMPRISING RUBBER HAVING DISPERSED THEREIN, BASED ON ABOUT 100 PARTS BY WEIGHT OF SAID RUBBER, ABOUT 2 TO 12 PARTS BY WEIGHT OF FINELY DIVIDED CAO AND ABOUT 3 TO 25 PARTS BY WEIGHT OA AL2O3, THE AMOUNT OF AL2O3 BEING IN EXCESS OF THE AMOUNT OF CAO, (B) COATING A LAYER OF TIRE CORDS, FORMED FROM TEXTILE FIBERS OF THE GROUP CONSISTING OF NYLON AND POLYOLEFINS, WITH SAID COMPOSITION, AND
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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 |