Patent US3945422A successfully refreshed from Google Patents.
US3945422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire with no ply steer belt
Assignee: UG Licensing Services Inc
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Filing: 1975-01-08
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Granted: 1976-03-23
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Expires: 1995-01-08
Abstract
Abstract A radial ply pneumatic tire has a belt assembly which is constructed so that the laminated layers of rubberized parallel cord material in the belt are arranged in such a way that the lamina stiffnesses of the belt plies are symmetrically arranged with regard to the thickness midplane of the belt.
Inventors
- 👤 Marion G. Pottinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:47
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/18; B60C9/20; B60C9/2003; B60C9/2009; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10765; Y10T152/10792
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
95 words
In a radial ply tire having a belt assembly with an odd number of plies of rubberized mutually parallel cords crossing the circumferential midplane of the tire at an acute angle, the improvement wherein the cords in each of the radially innermost and radially outermost plies of the belt assembly are oriented in the same direction relative to said circumferential midplane while the ply or plies intermediate the radially innermost and radially outermost plies are each characterized by a cord direction and stiffness which effects symmetrical stiffness relative to the thickness midplane of the belt.
Claim 2
Dependent Claim
95 words
In a radial ply tire having a belt assembly with an odd number of plies of rubberized mutually parallel cords crossing the circumferential midplane of the tire at an acute angle, the improvement wherein the cords in each of the radially innermost and radially outermost plies of the belt assembly are oriented in the same direction relative to said circumferential midplane while the ply or plies intermediate the radially innermost and radially outermost plies are each characterized by a cord direction and stiffness which effects symmetrical stiffness relative to the thickness midplane of the belt.
Claim 3
Dependent Claim
60 words
The tire as defined in claim 1 wherein said belt assembly consists of three plies and the ply intermediate said radially innermost and outermost plies is characterized by a stiffness approximately equal to twice that of either of said radially innermost or radially outermost plies and a cord direction opposite to the direction of the radially outermost and innermost plies.
Claim 4
Dependent Claim
48 words
The tire as defined in claim 2 wherein the cord end count of said radially innermost and outermost plies are substantially equal and the cord end count of said intermediate ply is approximately twice that of the cord end count of either said radially innermost or outermost ply.
Claim 5
Dependent Claim
48 words
A radial ply tire as defined in claim 3 wherein said acute angle is less than 25°, the end count of each of the radially innermost and outermost plies is 9 cords per inch and the end count of said intermediate ply is approximately 18 cords per inch.
References Cited (Backward Citations)
US2826233A
Cited
US3392774A
Cited
US3335777A
Cited
US3643723A
Cited
US3516468A
Cited
US3583463A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |