US3983919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-modulus rubber composition for pneumatic tires
Assignee: UG Licensing Services Inc
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Filing: 1974-10-09
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Granted: 1976-10-05
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Expires: 1994-10-09
Abstract
Abstract A tire designed for operation both as a pneumatic tire under ordinary conditions, and also without inflation under emergency conditions, has thick sidewalls made of low-hysteresis high-modulus vulcanized natural rubber composition containing reinforcing carbon black and also containing an effective anti-oxidant, together with a cobalt soap to prevent reduction in modulus during service of the tire.
Inventors
- 👤 James W. Messerly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:52
CPC Classifications
B; B60; B60C; B60C1/00; B60C1/0025; C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K5/00; C08K5/04; C08K5/09; C08K5/098; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10855; Y10T152/10864
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
40 words
A high-modulus, low-hysteresis, stable, vulcanized, tire composition consisting essentially of vulcanized cis-polyisoprene rubber containing a high-modulus carbon black, about 4 to 8 parts, per hundred of rubber, of an active cobalt compound, and an effective quantity of an efficient antioxidant.
Claim 2
Dependent Claim
40 words
A high-modulus, low-hysteresis, stable, vulcanized, tire composition consisting essentially of vulcanized cis-polyisoprene rubber containing a high-modulus carbon black, about 4 to 8 parts, per hundred of rubber, of an active cobalt compound, and an effective quantity of an efficient antioxidant.
Claim 3
Dependent Claim
20 words
A tire composition as in claim 1, in which the cobalt compound is a cobalt soap of a fatty acid.
Claim 4
Dependent Claim
15 words
A tire composition as in claim 2, in which the cobalt compound is cobalt stearate.
Claim 5
Dependent Claim
17 words
A tire composition as in claim 1, in which the carbon black is superior processing furnace black.
Claim 6
Dependent Claim
16 words
A tire composition as in claim 1, in which the antioxidant includes an N-substituted p-phenylene diamine.
Claim 7
Dependent Claim
13 words
A tire composition as in claim 1, including a heat setting phenolic resin.
Claim 8
Dependent Claim
17 words
A tire composition as in claim 6, in which the phenolic resin is a resorcinol formaldehyde resin.
Claim 9
Dependent Claim
23 words
A tire composition as in claim 7, in which the cobalt compound is cobalt stearate and the antioxidant includes an N-substituted p-phenylene diamine.
Claim 10
Dependent Claim
18 words
A tire composition as in claim 8, in which the major part of the cis-polyisoprene is natural rubber.
Claim 11
Dependent Claim
21 words
A tire with a sidewall comparable in thickness to the tread, which sidewall consists of the composition defined in claim 1.
Claim 12
Dependent Claim
21 words
A tire with a sidewall comparable in thickness to the tread, which sidewall consists of the composition defined in claim 9.
Claim 13
Dependent Claim
40 words
A tire as in claim 11, containing a ply of reinforcing cords, in which the major part of the thickness of the middle zone of the sidewall is between the reinforcing cord ply and the inner surface of the tire.
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) | 1979-10-05 | 1980-04-05 | 1980-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-05 | 1984-04-05 | 1984-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-05 | 1988-04-05 | 1988-10-05 | $7700.00 | Window Closed / Lapsed |