US3853164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cushioned tread tire
Assignee: PNEU UNIROYAL ENGLEBERT
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Filing: 1973-05-14
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Granted: 1974-12-10
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Expires: 1993-05-14
Abstract
Abstract A radial ply pneumatic vehicle tire, characterized by uniform tread wear is disclosed. The tire includes a radial ply carcass, first and second sidewalls overlying the lateral portions of the carcass, a tread overlying the crown region of the carcass, a breaker positioned between the tread and the crown region of the carcass and a cushion positioned between the breaker and the tread. The cushion is constituted by a nonreinforced rubber compound having a hardness greater than the hardness of the tread. The cushion extends from a point under the tread to the exterior surface of at least one of said sidewalls, thereby providing a relatively stiff support for at least one tread shoulder by at least one of the sidewalls. This abstract is not to be taken either as a complete exposition or as a limitation of the present invention, however, the full nature and extent of the invention being discernible only by reference to and from the entire disclosure.
Inventors
- 👤 H Mirtain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:47
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/18; B60C11/00; B60C11/0041; B60C11/005; B60C19/00; B60C19/001; B60C3/00; B60C3/06; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10504; Y10T152/10765; Y10T152/1081
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
114 words
A pneumatic vehicle tire comprising: a radial ply carcass; first and second sidewalls overlying the lateral portions of said carcass; a tread overlying the crown region of said carcass; a breaker interposed between said tread and said crown region of said carcass in circumferentially surrounding relation to the latter; and a cushion constituted by a non-reinforced rubber compound interposed between said breaker and said tread and extending from a point under said tread to the exterior surface of at least one of said sidewalls; said cushion having a hardness greater than the hardness of said tread, thereby providing for relatively stiff support of the tread shoulder by said at least one of said sidewalls.
Claim 2
Dependent Claim
114 words
A pneumatic vehicle tire comprising: a radial ply carcass; first and second sidewalls overlying the lateral portions of said carcass; a tread overlying the crown region of said carcass; a breaker interposed between said tread and said crown region of said carcass in circumferentially surrounding relation to the latter; and a cushion constituted by a non-reinforced rubber compound interposed between said breaker and said tread and extending from a point under said tread to the exterior surface of at least one of said sidewalls; said cushion having a hardness greater than the hardness of said tread, thereby providing for relatively stiff support of the tread shoulder by said at least one of said sidewalls.
Claim 3
Dependent Claim
21 words
A pneumatic vehicle tire according to claim 1, wherein said cushion is symmetrical about the median equatorial plane of the tire.
Claim 4
Dependent Claim
40 words
A pneumatic vehicle tire according to claim 2, wherein the radial thickness of said cushion is a maximum in the shoulder region of said tread and is a minimum in the area of the median equatorial plane of the tire.
Claim 5
Dependent Claim
40 words
A pneumatic vehicle tire according to claim 3, wherein said cushion is configured, in axial cross-section, by two symmetrical triangles, an apex of one triangle abutting an apex of the other triangle at the median equatorial plane of the tire.
Claim 6
Dependent Claim
44 words
A pneumatic vehicle tire according to claim 4, wherein one side of each of said triangles is positioned at one of the outside walls of said tire, thereby formIng an annular band in each of said outside walls separating said tread from said sidewalls.
Claim 7
Dependent Claim
34 words
A pneumatic vehicle tire according to claim 4, wherein one apex of each of said triangles is positioned at one of the outside walls of said tire, thereby separating said tread from said sidewalls.
Claim 8
Dependent Claim
42 words
A pneumatic vehicle tire according to claim 3, wherein said cushion is configured, in axial cross-section, by two symmetrical curvilinear trapezoidal quadrilaterals, an apex of one quadrilateral abutting an apex of the other quadrilateral at the median equatorial plane of the tire.
Claim 9
Dependent Claim
44 words
A pneumatic vehicle tire according to claim 7, wherein one side of each of said quadrilaterals is positioned at one of the outside walls of said tire, thereby forming an annular band in each of said outside walls separating said tread from said sidewalls.
Claim 10
Dependent Claim
67 words
A pneumatic vehicle tire according to claim 1, wherein said cushion is configured, in axial cross section, as a crescent, one apex of said crescent being positioned at one of the outside walls of said tire and the other apex thereof being positioned in the median equatorial plane of the tire, the radial thickness of said cushion being a maximum in the shoulder region of said tread.
Claim 11
Dependent Claim
75 words
A pneumatic vehicle tire according to claim 1, wherein said cushion is configured, in axial cross-section, as a crescent, one apex of said crescent being positioned at one of the outside walls of said tire and the other apex thereof being positioned in the region of the tread shoulder opposite said one outside wall, the radial thickness of said cushion being a maximum in the region of the tread shoulder adjacent said one outside wall.
Claim 12
Dependent Claim
46 words
A pneumatic vehicle tire according to claim 1, wherein the rubber compound constituting said cushion has a hardness rating of between about 85 and about 88 Shore A* units and said tread has a hardness rating of between about 58 and about 62 Shore A* units.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |