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.

Date of Patent:
Jul. 26, 2005

Filed:

Jan. 17, 2003
Applicants:

Takashi Ishizaka, Saitama, JP;

Masatoshi Akagi, Saitama, JP;

Kiyotaka Fukui, Kumamoto, JP;

Tadashi Miyamoto, Kumamoto, JP;

Inventors:

Takashi Ishizaka, Saitama, JP;

Masatoshi Akagi, Saitama, JP;

Kiyotaka Fukui, Kumamoto, JP;

Tadashi Miyamoto, Kumamoto, JP;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F16D041/06 ;
U.S. Cl.
CPC ...
Abstract

A one-way clutch includes an inner race, an outer race driven in a specific direction and provided with a plurality of pockets in its inner circumference facing the outer circumference of the inner race and threaded attachment holes to be used for attaching a driven member to the outer race, rollers respectively placed in the plurality of pockets, and elastic members pressing the rollers in a specific direction. A center angular interval between the middle pocket in any three successive ones of the pockets and the adjacent pocket on the forward side of the middle pocket, and an center angular interval between the middle pocket and the adjacent pocket on the backward side of the middle pocket are different from each other. Thus the distance between the front end surface of the pocket and the threaded attachment hole on the forward side of the pocket can be sufficiently large, and reduction of the rigidity of the outer race can be prevented without increasing the diameter of the outer race. The springs may be flat coil springs of a cross section having longer sides parallel to the longitudinal axis of the rollers, and a U-shaped spring caps each having a pair of side walls may be put on end on the side of the rollers of the springs, respectively.


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