IP Library › Granted Patent US 10,632,791
Granted Patent B2
US 10,632,791 · App. 15/768,719 · Granted Apr 28, 2020

Tire

Inventors: Tetsuya Nakajima (Utsunomiya, JP); Kenichi Yamashita (Utsunomiya, JP); Takashi Tokuyama (Utsunomiya, JP); Shinei Takamura (Itami, JP); Masumi Suzuki (Kobe, JP); Koji Fujisawa (Kobe, JP)
Assignees: Sumitomo Electric Tochigi Co., Ltd.; Sumitomo Electric Industries, Ltd.; Sumitomo Rubber Industries, Ltd.; Nippon Steel Corporation
B60C9/0007B60C1/00B60C9/00D07B1/06D07B1/0666B60C2009/0014D07B2201/2087D07B2201/2092D07B2205/3025D07B2205/3067D07B2205/3071D07B2501/2046D10B2505/022
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Quick Facts
Patent No.
US 10,632,791
App. No.
15/768,719
Granted
Apr 28, 2020
Kind
B2
Abstract

A tire having a rubber body in which a steel cord is embedded, wherein a layer composed of Zn x Co y O is formed at the interface between the steel cord and the rubber body and x+y is 5/6 or more and 1 or less.

Claims (13)

1. A tire having a rubber body in which a steel cord is embedded, wherein a layer composed of Zn x Co y O is formed at the interface between the steel cord and the rubber body and x+y is 5/6 or more and 1 or less.

2. The tire according to claim 1 , wherein the steel cord has a steel wire and a plating layer containing Cu and Zn provided on the steel wire and

Co is contained in the plating layer.

3. The tire according to claim 2 , wherein Co is exposed on the surface of the plating layer of the steel cord.

4. The tire according to claim 1 , wherein Co is contained in the rubber body.

5. The tire according to claim 1 , wherein the layer composed of Zn x Co y O is at least partially in between a ZnO film and a copper sulfide layer.

6. A tire having a rubber body in which a steel cord is embedded,

wherein the steel cord has a steel wire and a plating layer containing Cu and Zn provided on the steel wire,

wherein Co is contained in the plating layer,

wherein a layer of composition which is composed of Zn x Co y O is formed at the interface between the steel cord and the rubber body,

wherein a ZnO film is formed between the rubber body and the plating layer,

wherein a Co component contained in plating layer is oxidized in part under an environment of moist heat deterioration to form Co 2+ or Co 3+ and the composition is formed through the replacement with Zn 2+ in the ZnO film so as to balance the valency, and

wherein x+y is 5/6 or more and 1 or less.

Assignments (3)
MERGER Recorded Aug 20, 2019
From: SUMITOMO (SEI) STEEL WIRE CORP.
To: SUMITOMO ELECTRIC INDUSTRIES, LTD.
Reel/Frame 050108/0421 →
CHANGE OF NAME Recorded May 14, 2019
From: NIPPON STEEL & SUMITOMO METAL CORPORATION
To: NIPPON STEEL CORPORATION
Reel/Frame 049257/0828 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 13, 2018
From: NAKAJIMA, TETSUYA; YAMASHITA, KENICHI; TOKUYAMA, TAKASHI; TAKAMURA, SHINEI; SUZUKI, MASUMI; FUJISAWA, KOJI
To: SUMITOMO ELECTRIC TOCHIGI CO., LTD.; SUMITOMO (SEI) STEEL WIRE CORP.; SUMITOMO RUBBER INDUSTRIES, LTD.; NIPPON STEEL & SUMITOMO METAL CORPORATION
Reel/Frame 046345/0955 →
Priority Claims (1)
JP 2015-204895 · Oct 16, 2015 · national
Continuity (1)
Related Publication 20180304689A1 · Oct 25, 2018