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:
Nov. 11, 2008
Filed:
Aug. 17, 2004
Hiroshi Ishiguro, Fujisawa, JP;
Nobuhiko Miyake, Fujisawa, JP;
Yukihiro Akabane, Fujisawa, JP;
NSK Ltd., Tokyo, JP;
Abstract
A rotation support device for a compressor pulley, wherein a three-point contact radial ball bearing () is used as a rolling bearing for supporting a driven pulley, the cross sectional shape of an inner ring raceway track () coming into contact, at one point, with the rolling contact surface of each ball () is formed in a composite arc by smoothly and continuously connecting arcs with different radii of curvature Rand Rto each other, and the radius of curvature Ron a center side in the width direction is made smaller and the radii of curvature Ron the both end sides in the width direction are made larger (R<R) whereby the durability of the rolling bearing for supporting the driven pulley can be assured while reducing the size of the rolling bearing.