Patent US4800941A successfully refreshed from Google Patents.
US4800941A
Expired / Lapsed
US
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Heavy load radial tire
Assignee: Yokohama Rubber Co Ltd
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Filing: 1987-04-15
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Granted: 1989-01-31
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Expires: 2007-04-15
Abstract
Abstract A heavy load radial tire is disclosed, wherein a sub-carcass layer having a cord angle substantially equal to that of a carcass layer is disposed on the carcass layer, and at least one belt layer whose cords cross at right angles the cords of the sub-carcass layer is disposed on the sub-carcass layer.
Inventors
- 👤 Kazuyuki Kabe
- 👤 Ken Takahashi
- 👤 Masashi Kida
- 👤 Saichi Harada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:04
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/02; B60C9/04; B60C9/08; B60C9/18; B60C9/28; B60C9/20; B60C9/2003; B60C9/2006; B60C9/22; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10765; Y10T152/10801
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
137 words
A heavy duty radial tire having a tread portion and at least one carcass layer disposed inwardly of said tread whose cords are disposed at substantially 90° with respect to a tire circumferential direction, further comprising: (1) a sub-carcass layer having a cord angle substantially equal to that of said carcass layer disposed adjacent to and outwardly of said carcass layer on a tread surface side and having a width of from 50 to 90% of the road contact width of said tread surface; and (2) at least one belt layer whose cords cross at right angles the cords of said sub-carcass layer disposed adjacent to and outwardly of said sub-carcass layer on the tread surface said, the width of said belt layer adjacent to said sub-carcass layer being greater than the width of said sub-carcass layer.
Claim 2
Dependent Claim
137 words
A heavy duty radial tire having a tread portion and at least one carcass layer disposed inwardly of said tread whose cords are disposed at substantially 90° with respect to a tire circumferential direction, further comprising: (1) a sub-carcass layer having a cord angle substantially equal to that of said carcass layer disposed adjacent to and outwardly of said carcass layer on a tread surface side and having a width of from 50 to 90% of the road contact width of said tread surface; and (2) at least one belt layer whose cords cross at right angles the cords of said sub-carcass layer disposed adjacent to and outwardly of said sub-carcass layer on the tread surface said, the width of said belt layer adjacent to said sub-carcass layer being greater than the width of said sub-carcass layer.
Claim 3
Dependent Claim
22 words
A heavy duty radial tire as defined in claim 1, wherein the number of said belt layers is from 2 to 3.
References Cited (Backward Citations)
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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) | 1992-01-31 | 1992-08-01 | 1993-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-31 | 1996-08-01 | 1997-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-31 | 2000-08-01 | 2001-01-31 | $7700.00 | Window Closed / Lapsed |