US3896869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radial pneumatic tire having a compensating cord layer
Assignee: Toyo Tire Corp
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Filing: 1973-11-15
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Granted: 1975-07-29
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Expires: 1993-11-15
Abstract
Abstract A pneumatic tire having a carcass comprising one or more rubbercoated cord layers intersecting the equator line of the tire at an angle of 60* to 90* is provided with an even number of low extensible or inextensible rubber-coated cord layers disposed adjacent to the carcass and beneath the tire tread. The low extensible or inextensible cord layers each intersect the equator line of the tire at a constant angle and also intersect one another. An additional compensating rubber-coated low extensible cord layer intersecting the equator line at a constant angle and the adjacent cord layer at an opposite direction to the adjacent cord layer is interposed between the carcass and the even number of cord layers to compensate for any lateral deviating force.
Inventors
- 👤 Hiroyasu Fujishima
- 👤 Kensei Aoe
- 👤 Masahiro Ishigaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:44
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/18; B60C9/28; B60C9/20; B60C9/2003; B60C9/2009; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10765; Y10T152/10792
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
159 words
A pneumatic tire having a tread comprising a carcass having at least one rubber-coated cord layer intersecting the equator line of the tire at an angle of 60* to 90*, two rubber-coated inextensible belt cord layers adjacent to the carcass and beneath the tire tread intersecting the equator line of the tire at an angle of 15* to 35* and arranged symmetrically with respect to the equator line of the tire in opposite directions with respect to each other, and means for compensating for lateral deviating forces including a single additional rubber-coated low extensible cord layer interposed between said carcass and said inextensible belt cord layers, said additional layer intersecting the equator line of the tire at an angle of 10* to 30* and at an opposite direction to the adjacent layer of said inextensible belt cord layers, and said angle of said additional layer is at least 5* smaller than said angle of said inextensible belt cord layers.
Claim 2
Dependent Claim
159 words
A pneumatic tire having a tread comprising a carcass having at least one rubber-coated cord layer intersecting the equator line of the tire at an angle of 60* to 90*, two rubber-coated inextensible belt cord layers adjacent to the carcass and beneath the tire tread intersecting the equator line of the tire at an angle of 15* to 35* and arranged symmetrically with respect to the equator line of the tire in opposite directions with respect to each other, and means for compensating for lateral deviating forces including a single additional rubber-coated low extensible cord layer interposed between said carcass and said inextensible belt cord layers, said additional layer intersecting the equator line of the tire at an angle of 10* to 30* and at an opposite direction to the adjacent layer of said inextensible belt cord layers, and said angle of said additional layer is at least 5* smaller than said angle of said inextensible belt cord layers.
Claim 3
Dependent Claim
44 words
The pneumatic tire as in claim 1, wherein said two inextensible belt cord layers intersect said equator line at an angle of 15* to 25* and wherein said additional low extensible cord layer intersects said equator line at an angle of 10* to 20*.
Claim 4
Dependent Claim
45 words
A peumatic tire as in claim 1, wherein the cord material of said inextensible belt cord layers has a modulus of elasticity of 3,000 to 20,000 Kg/mm2, and the cord material of said additional layer has a modulus of elasticity of 400 and 2,000 Kg/mm2.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |