US4483381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic tire with belt reinforcement
Assignee: Goodyear Tire and Rubber Co
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Filing: 1983-03-07
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Granted: 1984-11-20
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Expires: 2003-03-07
Abstract
Abstract Pneumatic tire having circumferential fabric-reinforced rubber belt positioned between its tread and carcass where the rubber of the belt is comprised of medium vinyl polybutadiene, cis 1,4-polyisoprene and optionally, cis 1,4-polybutadiene. The invention is particularly directed to such tire where the medium vinyl polybutadiene rubber of said belt is a copolymer of 1,3-butadiene and a small amount of divinyl benzene.
Inventors
- 👤 Richard M. Scriver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:06
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/18; B60C9/20; B60C1/00; Y; Y10; Y10S; Y10S57/00; Y10S57/902; Y10T; Y10T152/00; Y10T152/10; Y10T152/10036; Y10T152/10495; Y10T152/10765; Y10T152/1081; Y10T152/10855; Y10T152/10873; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/249933
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
110 words
A pneumatic rubber tire comprised of a toroidal shaped fabric-reinforced rubber carcass and an outer circumferential rubber tread, two spaced substantially inextensible beads and two sidewalls extending radially from and connecting said tread to said beads, said tire characterized by having a circumferential fabric reinforced rubber belt positioned between said tread and supporting carcass where the rubber of said belt is comprised of (A) about 10 to about 45 weight percent medium vinyl polybutadiene rubber, (B) about 55 to about 90 weight percent cis 1,4-polyisoprene rubber selected from at least one of natural rubber and synthetic cis 1,4-polyisoprene and (C) about 0 to about 30 weight percent cis 1,4-polybutadiene rubber.
Claim 2
Dependent Claim
110 words
A pneumatic rubber tire comprised of a toroidal shaped fabric-reinforced rubber carcass and an outer circumferential rubber tread, two spaced substantially inextensible beads and two sidewalls extending radially from and connecting said tread to said beads, said tire characterized by having a circumferential fabric reinforced rubber belt positioned between said tread and supporting carcass where the rubber of said belt is comprised of (A) about 10 to about 45 weight percent medium vinyl polybutadiene rubber, (B) about 55 to about 90 weight percent cis 1,4-polyisoprene rubber selected from at least one of natural rubber and synthetic cis 1,4-polyisoprene and (C) about 0 to about 30 weight percent cis 1,4-polybutadiene rubber.
Claim 3
Dependent Claim
32 words
The tire of claim 1 where said belt extends across the crown portion of the tire and the outer edge portions of the belt terminate in the shoulder region of the tire.
Claim 4
Dependent Claim
50 words
The tire of claim 2 where the rubber of said belt is comprised of (A) about 15 to about 30 weight percent polybutadiene rubber having a vinyl 1,2-content in the range of about 25 to about 50 percent and (B) about 70 to about 85 weight percent cis 1,4-polyisoprene rubber.
Claim 5
Dependent Claim
33 words
The tire of claim 2 where the fabric for said belt is composed of cords of at least one selected from the group of glass, nylon, aramid, polyester and metal alloy-coated steel filament.
Claim 6
Dependent Claim
22 words
The tire of claim 2 where the fabric for said belt is composed of cords of at least one brass-coated steel filament.
Claim 7
Dependent Claim
91 words
The tire of claim 2 where the rubber of said belt is comprised of (A) about 15 to about 30 weight percent medium vinyl polybutadiene rubber having a vinyl 1,2-content in the range of about 25 to about 50 percent, (B) about 70 to about 85 weight percent cis 1,4-polyisoprene rubber and (C) about 10 to about 25 weight percent cis 1,4-polybutadiene rubber and where the fabric for said belt is composed of cords of at least one selected from the group of glass, nylon, aramid, polyester and coated steel filament.
Claim 8
Dependent Claim
48 words
The tire of claim 1 wherein the medium vinyl polybutadiene rubber has a vinyl 1,2-content in the range of about 25 to about 50 and is prepared by copolymerizing 1,3-butadiene and a small amount of divinyl benzene in essentially non-polar aromatic solvent and one or more polar modifiers.
Claim 9
Dependent Claim
87 words
The tire claim 7 wherein the rubber of said belt is composed of (A) said medium vinyl polybutadiene rubber as a copolymer with divinyl benzene and (B) cis 1,4-polyisoprene rubber and where said belt extends across the crown portion of the tire and the outer edge portions of the belt terminate in the shoulder region of the tire and where the fabric of said belt is composed of cords of at least one selected from the group of glass, nylon, aramid, polyester and metal alloy-coated steel filament.
Claim 10
Dependent Claim
22 words
The tire of claim 8 where the fabric of said belt is composed of cords of at least one brass-coated steel filament.
Claim 11
Dependent Claim
57 words
The tire of claim 7 where the rubber of said belt is composed of (A) said medium vinyl polybutadiene copolymer, (B) cis 1,4-polyisoprene rubber and (C) cis 1,4-polybutadiene and where the fabric of said belt is composed of cords of at least one selected from the group of glass, nylon, aramid, polyester and metal alloy-coated steel filament.
References Cited (Backward Citations)
US4192366A
Cited
US4230841A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-20 | 1988-05-21 | 1988-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-20 | 1992-05-21 | 1992-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-20 | 1996-05-21 | 1996-11-20 | $7700.00 | Window Closed / Lapsed |