EP0353621A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Steel cord ply and tire using the same
Assignee: Sumitomo Rubber Industries Ltd
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Filing: 1989-07-26
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Granted: —
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Expires: 2009-07-26
Abstract
Abstract A steel cord reinforced ply assembly such as would be used in a tire carcass or breaker. Each cord is made up of a plurality of strands twisted in one direction and the strand of an adjacent parallel cord are twisted in the opposite direction so that the ply assembly will have greater uniformity and ease in bending into proper position in the tire.
Inventors
- 👤 Masatsugu Kohno
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 15:41
CPC Classifications
D; D07; D07B; D07B1/00; D07B1/06; D07B1/0606; D07B1/0613; B; B60; B60C; B60C9/00; B60C9/0007; B60C9/18; B60C9/20; B60C9/2003; B60C9/2006; D07B1/062; D07B1/0626; D07B1/0633
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
41 words
A steel cord enforced ply comprising a layer of elastomer reinforced by a plurality of generally parallel steel cords, each cord comprising a plurality of twisted together strands, with adjacent cords or groups of adjacent cords being of a different twist-direction.
Claim 2
Dependent Claim
41 words
A steel cord enforced ply comprising a layer of elastomer reinforced by a plurality of generally parallel steel cords, each cord comprising a plurality of twisted together strands, with adjacent cords or groups of adjacent cords being of a different twist-direction.
Claim 3
Dependent Claim
17 words
The ply of Claim 1 in which all of the steel cords are of the same size.
Claim 4
Dependent Claim
47 words
The ply of Claim 1 in which the cords are arranged to have a group of five or fewer cords having the same twist-direction adjacent each other and disposed parallel thereto a second group of cords having an equal number of cords but having the opposite twist-direction.
Claim 5
Dependent Claim
14 words
The ply of Claim 1 in which the steel cords have a Lang's structure.
Claim 6
Dependent Claim
73 words
A vehicle tire having a carcass, a belt and a bead reinforcing layer, at least one of said carcass, said belt and said bead reinforcing layer, comprising a steel cord ply having an elastomer reinforced by a plurality of steel cords, said steel cords being generally parallel to each other, each cord comprising a plurality of twisted together strands, with adjacent cords or groups of adjacend cords being of a different twist direction.
Claim 7
Dependent Claim
73 words
A vehicle tire having a carcass, a belt and a bead reinforcing layer, at least one of said carcass, said belt and said bead reinforcing layer, comprising a steel cord ply having an elastomer reinforced by a plurality of steel cords, said steel cords being generally parallel to each other, each cord comprising a plurality of twisted together strands, with adjacent cords or groups of adjacend cords being of a different twist direction.
Claim 8
Dependent Claim
17 words
The tire of Claim 5 in which all of the steel cords are of the same size.
Claim 9
Dependent Claim
48 words
The tire of Claim 5 in which the cords are arranged to have a group of five or fewer cords having the same twist direction adjacent each other and disposed parallel thereto a second group of cords having an equal number of cords but having the opposite twist-direction.
Claim 10
Dependent Claim
15 words
The tire of Claim 5 in which the steel cords have a Lang's lay structure.
References Cited (Backward Citations)
No citation records indexed.
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