US3674078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic tire with polyester casing, nylon breaker and stereo regular polybutadiene
Assignee: Toyo Tire Corp
•
Filing: 1968-12-02
•
Granted: 1972-07-04
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Expires: 1988-12-02
Abstract
Abstract A tire comprising a polyester casing ply cord, a nylon breaker or cap ply cord, the breaker or cap ply consisting of at least two layers, the rubber used in the above plies being vulcanizable and comprising at least 20 percent stereo-regular polybutadiene or stereo-regular styrene-butadiene containing carbon black. The tread is formed of a vulcanizable rubber containing specific proportions of stereo-regular polybutadiene or stereo-regular styrene-butadiene rubber containing carbon black with a maximum particle size. High speed durability is greatly improved.
Inventors
- 👤 Shiro Sasaki
- 👤 Narajiro Shibata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:16
CPC Classifications
B; B60; B60C; B60C1/00; B60C1/0016; C; C08; C08L; C08L21/00; B60C2001/0066; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10765; Y10T152/1081
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
31 words
The tire of claim 1 in which the tread rubber compound comprises a rubber component containing from about 70 to about 100 percent by weight of a stereo regular cis-styrene-butadiene rubber.
Claim 2
Dependent Claim
42 words
The tire of claim 1 in which the rubber compound utilized in the casing ply and the breaker or cap ply comprises a rubber component containing from about 20 to about 70 percent by weight of a stereo regular cis-styrene butadiene rubber.
Claim 3
Dependent Claim
28 words
The tire of claim 1 in which all rubber compounds comprise a rubber component containing from about 20 to about 60 percent by weight of a cis-polybutadiene rubber.
Claim 4
Dependent Claim
30 words
The tire of claim 1 in which all rubber compounds comprise a rubber component containing from about 20 to about 100 percent by weight of a stereo regular cis-styrene-butadiene rubber.
Claim 5
Dependent Claim
46 words
The tire of claim 1 in which the rubber compound utilized in the tread comprises a rubber component comprising from about 20 to about 60 percent by weight of a cis-polybutadiene rubber and from about 80 to about 40 percent by weight of a cis-styrene-butadiene rubber.
Claim 6
Dependent Claim
65 words
The tire of claim 1 in which the rubber compound utilized to form the casing ply and the breaker or cap ply comprises a rubber component comprising from about 20 to about 70 percent by weight of a member selected from the group consisting of cis-polybutadiene rubber and a stereo regular cis-styrene-butadiene rubber, and from about 80 to about 30 percent by weight natural rubber.
References Cited (Backward Citations)
US3363659A
Cited
US3157218A
Cited
US3400099A
Cited
US3363660A
Cited
US3280876A
Cited
US3548910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |