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:
Dec. 04, 2007
Filed:
Oct. 24, 2002
Seigou Urakami, Yamato, JP;
Youichi Matsumoto, Yokohama, JP;
Yasuo Murakami, Hadano, JP;
NSK Ltd., Tokyo, JP;
Abstract
To predict a correction rated life at high accuracy. A life predicting device executes step S, step S, step Sfor inputting specification information including a basic dynamic rated load C and basic static rated load C, stepfor computing a dynamic equivalent load P based on the specification information. step Sfor setting a reliability factor a, step Sand step Sfor determining a contact ellipse area S, step Sfor inputting a foreign substance purchasing diameter d('debris' means 'foreign substance'), stepfor determining a standardized foreign substance diameter (d/√ S), step Sfor setting a life correction coefficient abased on the standardized foreign substance diameter, and step Sand step Sfor calculating a correction rated life Lbased on the reliability coefficient, the life correction coefficient, the basic dynamic rated load and the dynamic equivalent load and the like.