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:
Aug. 06, 1996
Filed:
May. 31, 1994
Applicant:
Inventors:
Tomoki Muraoka, Kanagawa, JP;
Tsutomu Abe, Kanagawa, JP;
Kazuhiro Kobayashi, Hyogo, JP;
Kenichi Hosoda, Hyogo, JP;
Assignees:
NSK Ltd., Tokyo, JP;
Sanyo Special Steel Co., Ltd., Hyogo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
148330 ; 148333 ;
Abstract
A rail for a linear motion guide bearing is fabricated by using a steel which contains C in a range of from 0.56 to 1.0% by weight, Si in a range of up to 0.15% by weight, Mn in a range from 0.20 to 0.40% by weight, Cr in a range of from 0.30 to 0.70% by weight, and B in a range of from 0.0005 to 0.0035% by weight, whereby the hardness of the track surface of the resultant rail is higher than a Vickers hardness of 700, and the die is not decreased in service 1 life by the cold-drawing of the steel.