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. 06, 1998
Filed:
Jan. 16, 1997
Applicant:
Inventors:
Satoshi Kadokawa, Fujisawa, JP;
Dai Kinno, Fujisawa, JP;
Assignee:
NSK Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L / ; F01L / ;
U.S. Cl.
CPC ...
123 9042 ; 123 905 ; 123 9051 ;
Abstract
A surface treatment layer for reducing friction is formed either on the outer peripheral surface of the shaft or on the inner peripheral surface of the roller opposed to the outer peripheral surface of the shaft with a small gap between them, wherein surface damages are prevented by the surface treatment layer from occurring on the outer peripheral surfaces immediately after the engine starts and before the engine oil is supplied.