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:
Jan. 21, 2003
Filed:
Dec. 08, 2000
Applicant:
Inventors:
Shizuo Kashiwagi, Bloomingdale, IL (US);
Tomohiro Imanishi, Saitama, JP;
Yutaka Tsuchida, Saitama, JP;
Hiroaki Fujishiro, Saitama, JP;
Kunio Kawashima, Gunma, JP;
Assignee:
NSK Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16C 2/904 ;
U.S. Cl.
CPC ...
F16C 2/904 ;
Abstract
When working a linear guide rail having one or more raceway grooves on the side surfaces thereof, using rotary dies each including on the circumferential portion thereof a projection-shaped working portion matched in shape to the raceway groove the raceway grooves are rolled onto a rail blank work W. Since the raceway grooves can be rolled with high accuracy by a single working step, the working time of the raceway grooves as well as the working cost thereof can be reduced.