US4067372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radial tire having sidewalls reinforced with a rubbery mixture having a high modulus
Assignee: Pneumatiques Caoutchouc Manufacture et Plastiques Kleber Colombes SA
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Filing: 1975-02-26
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Granted: 1978-01-10
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Expires: 1995-02-26
Abstract
Abstract A tire with a radial carcass and a top belt under the tread, has sidewalls which are reinforced by layers of a rubbery mixture exhibiting a high modulus of elasticity and extending over the entire height of the sidewalls. The upper edges of these reinforcement layers are inserted between the carcass and the lateral edges of the belt.
Inventors
- 👤 Yves Masson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:47
CPC Classifications
B; B60; B60C; B60C15/00; B60C15/0009; B60C15/0018; B60C13/00; B60C17/00; B60C17/0009; B60C9/00; B60C9/02; B60C9/0207; B60C9/12; B60C9/14; B60C9/18; B60C9/26; B60C9/28; B29; B29D; B29D30/00; B29D30/06; B29D30/72; B29D2030/722; B29D2030/724; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10513; Y10T152/10855; Y10T152/10864
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
163 words
A tire comprising a tread, a radial carcass formed of at least one of cord fabric, a top belt located under the tread of the tire, and sidewalls having external sidewall strips, said sidewalls including at least two reinforcing layer comprised of a reinforced rubber mixture exhibiting anisotropy of at least 2:1 with a modulus of elasticity of at least 200 kg/cm 2 at 100% elongation in the direction of the strongest resistance to elongation, the directions of the strongest resistance of each of the reinforcing layers being crossed at angles on the order of 20°-70° with respect to the cords of the radial carcass, said reinforcing layers being more extensible than said radial carcass and being placed under said sidewall strips and extending over the entire height of each of the sidewalls and the upper end portions of said reinforcing layers being inserted between the carcass and the lateral edges of the belt for a distance of approximately 15 to 35 mm.
Claim 2
Dependent Claim
163 words
A tire comprising a tread, a radial carcass formed of at least one of cord fabric, a top belt located under the tread of the tire, and sidewalls having external sidewall strips, said sidewalls including at least two reinforcing layer comprised of a reinforced rubber mixture exhibiting anisotropy of at least 2:1 with a modulus of elasticity of at least 200 kg/cm 2 at 100% elongation in the direction of the strongest resistance to elongation, the directions of the strongest resistance of each of the reinforcing layers being crossed at angles on the order of 20°-70° with respect to the cords of the radial carcass, said reinforcing layers being more extensible than said radial carcass and being placed under said sidewall strips and extending over the entire height of each of the sidewalls and the upper end portions of said reinforcing layers being inserted between the carcass and the lateral edges of the belt for a distance of approximately 15 to 35 mm.
Claim 3
Dependent Claim
59 words
A tire according to claim 1, wherein said belt has edges that are reinforced by folding the edges of at least one of the layers forming the belt over the edges of another layer forming the belt, the upper end portions of the rubber reinforcing layers being inserted between the carcass and the reinforced lateral edges of the belt.
Claim 4
Dependent Claim
32 words
A tire according to claim 1, wherein the lower edges of the reinforcing layers of the sidewalls are inserted between the filler sections of the beads of the tire and the carcass.
Claim 5
Dependent Claim
30 words
A tire according to claim 1, wherein the reinforcing layers of the sidewalls consist of two superimposed layers of the reinforced rubbery mixture, said reinforced rubbery mixture containing reinforcing fibers.
Claim 6
Dependent Claim
57 words
A tire according to claim 1, wherein the direction of the strongest resistance to elongation of the reinforcing layers form with the parallel circles of the tire, angles which are decreasing from the lower portions of these layers adjoining the beads of the tire to the upper portions of the layers adjoining the ends of the belt.
Claim 7
Dependent Claim
39 words
A tire according to claim 1, wherein a lower portion of each of the sidewalls is also stiffened by means of a section of hard rubber that is placed between the carcass and the reinforcing layers of the sidewalls.
Claim 8
Dependent Claim
38 words
A tire according to claim 2, wherein a lower portion of each of the sidewalls is stiffened by means of a section of hard rubber that is placed between the carcass and the reinforcing layers of the sidewalls.
Claim 9
Dependent Claim
39 words
A tire according to claim 3, wherein a lower portion of each of the sidewalls is also stiffened by means of a section of hard rubber that is placed between the carcass and the reinforcing layers of the sidewalls.
Claim 10
Dependent Claim
20 words
A tire according to claim 1, wherein said reinforced rubbery mixture contains reinforcing particles of a higher molcular weight polyolefin.
References Cited (Backward Citations)
US3192984A
Cited
US3052275A
Cited
US3301303A
Cited
US3404721A
Cited
US3481386A
Cited
US3480065A
Cited
US3509930A
Cited
US3717190A
Cited
US3904463A
Cited
US3888292A
Cited
US3911987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |