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:
May. 05, 1992
Filed:
Mar. 12, 1990
Applicant:
Inventors:
Kenichi Okamoto, Itami, JP;
Hidekazu Nakata, Itami, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D02G / ; B60C / ;
U.S. Cl.
CPC ...
57212 ; 57210 ; 57232 ; 57902 ; 152451 ;
Abstract
An improved steel cord for reinforcing rubber is formed of three steel filaments, one having a smaller diameter than the other two, twisted together. The thinner filament is twisted with the two filaments at least partially in contact with them and with the same pitch. When the steel cord is cut at both ends, the thinner filament is retracted inwardly from the ends of the two filaments. This improves the penetration of rubber into the cord and prevents edge separation.