The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 08, 1991
Filed:
Nov. 02, 1990
Issey Nakakita, Hiratsuka, JP;
Hisao Kato, Hiratsuka, JP;
The Yokohama Rubber Co., Ltd., Tokyo, JP;
Abstract
A pneumatic radial tire having at least one steel belt layer disposed at a tread portion, wherein each steel belt layer is constituted by mixing and arranging at random a plurality of steel cords having a 1.times.2 twist structure of an S twist and a plurality of steel cords having a 1.times.2 twist structure of a Z twist, and has a mixing ratio of the steel cords having the 1.times.2 twist structure of the S twist to the steel cords having the 1.times.2 twist structure of the Z twist within a range of 4:6 to 6:4 and a difference in the twist pitch of at least 1.5 mm.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile