Patent US3762458A successfully refreshed from Google Patents.
US3762458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic tire having a glass cord breaker layer
Assignee: Bridgestone Corp
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Filing: 1971-11-22
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Granted: 1973-10-02
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Expires: 1991-11-22
Abstract
Abstract A pneumatic tire having a breaker layer composed of a rubber coated glass cord layer and short cut fiber reinforced rubber layers arranged on both sides of the glass cord layer in the form a sandwich. This tire has an improved abrasion resistance, cornering power and plunger resistance.
Inventors
- 👤 K Harakon
- 👤 N Matsui
- 👤 T Yoshida
- 👤 H Takagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:45
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/18; B60C9/1821; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10513; Y10T152/10765; Y10T152/1081
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
21 words
The tire as claimed in claim 1, wherein said short cut fiber is composed of glass, polyvinyl alcohol, rayon or polyester.
Claim 2
Dependent Claim
34 words
The tire as claimed in claim 1, wherein said short cut fiber is compounded with rubber in an amount of 5 to 100 parts by weight based on the 100 parts of the rubber.
Claim 3
Dependent Claim
34 words
The tire as claimed in claim 1, wherein said short cut fiber has a length of not longer than 30 mm and a ratio of the length to diameter of not less than 10.
Claim 4
Dependent Claim
23 words
The tire as claimed in claim 1, wherein said short cut fiber reinforced rubber layer has a thickness of 0.5 to 10 mm.
References Cited (Backward Citations)
US2960139A
Cited
US3599696A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |