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, 2012
Filed:
Jul. 27, 2005
Seigou Urakami, Fujisawa, JP;
Yoichi Matsumoto, Fujisawa, JP;
Seigou Urakami, Fujisawa, JP;
Yoichi Matsumoto, Fujisawa, JP;
NSK Ltd., Tokyo, JP;
Abstract
A rotation-support apparatus having construction in which large force is not applied to continuous sections between column sectionsand rim sectionseven when needlespush in the circumferential direction against the side surfaces in the circumferential direction of the column sections, thus making it possible to improve the durability of a retainer Of both side surfaces in the circumferential direction of a straight sectionon the inner-radial side in the middle section in the axial direction of the column sections, the portion near the outer-radial side of the retaineris more recessed than the portion near the inner-radial side of the retainer. Moreover, this portion near the inner-radial side is located within the pitch circle P of the needles. Furthermore, there is no contact between the rolling surfaces of the needlesand the straight sectionon the inner-radial side. As a result, it is possible to reduce the moment load applied to the column sectionsfrom the needles