US3989083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire with specially designed multiple carcass plies
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1974-06-24
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Granted: 1976-11-02
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Expires: 1994-06-24
Abstract
Abstract A tire for a racing vehicle characterized by multiple carcass plies in which both tension and shear stresses are shared equally by the carcass plies and cord reinforcements of the plies, this being accomplished by varying the pathways and end counts of the reinforcement cords from ply-to-ply and the gauge of the plies.
Inventors
- 👤 Dennis S. Chrobak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:17
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/02; B60C9/04; B60C9/06; B60C2009/0269; B60C2009/0284
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
152 words
A tire comprising a plurality of carcass plies surrounded by a tread and sidewalls terminating at a pair of beads and characterized in that each carcass ply has: a. a higher end count per inch of reinforcement cords than that of the next adjacent carcass ply closer the tread; b. a smaller gauge of rubbery material than that of the next adjacent carcass ply closer the tread; and c. lower reinforcement cord angles, measured relative to the centerplane of the tire, than those of the next adjacent carcass ply closer the tread, the gauge of rubbery material of the carcass plies and the end count and cord angles of the reinforcement cords of the carcass plies being such that the reinforcement cords of the carcass plies are uniformly stressed when the tire is mounted on a wheel rim and inflated to the normal inflation pressure recommended by the manufacturer of the tire.
Claim 2
Dependent Claim
152 words
A tire comprising a plurality of carcass plies surrounded by a tread and sidewalls terminating at a pair of beads and characterized in that each carcass ply has: a. a higher end count per inch of reinforcement cords than that of the next adjacent carcass ply closer the tread; b. a smaller gauge of rubbery material than that of the next adjacent carcass ply closer the tread; and c. lower reinforcement cord angles, measured relative to the centerplane of the tire, than those of the next adjacent carcass ply closer the tread, the gauge of rubbery material of the carcass plies and the end count and cord angles of the reinforcement cords of the carcass plies being such that the reinforcement cords of the carcass plies are uniformly stressed when the tire is mounted on a wheel rim and inflated to the normal inflation pressure recommended by the manufacturer of the tire.
Claim 3
Dependent Claim
24 words
The tire of claim 1, wherein the pathways of the reinforcement cords of the carcass plies between the beads are substantially equal in length.
Claim 4
Dependent Claim
11 words
The tire of claim 1, including at least four carcass plies.
Claim 5
Dependent Claim
33 words
The tire of claim 3, wherein the reinforcement cords of the carcass plies are in the range of from 25° to 35° measured in relation to the centerplane of the tire, when uninflated.
Claim 6
Dependent Claim
21 words
The tire of claim 3, wherein the reinforcement cords of the carcass plies are identical and have the same overall diameter.
Claim 7
Dependent Claim
36 words
The tire of claim 1, wherein the spacing between the reinforcement cords of a pair of adjacent plies is equal to the spacing between the cords of the adjacent ply closer the tread of the tire.
Claim 8
Dependent Claim
19 words
The tire of claim 1, which includes a fluid impervious innerliner covering the innermost carcass ply of the tire.
References Cited (Backward Citations)
US778496A
Cited
US1374505A
Cited
US1493674A
Cited
US1616069A
Cited
US2006315A
Cited
US2432630A
Cited
US3452800A
Cited
US3299934A
Cited
US3311152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |