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:
Sep. 09, 2003

Filed:

Sep. 26, 2000
Applicant:
Inventors:

Kou Masuda, Yokohama, JP;

Takeshi Nakamura, Yokohama, JP;

Osamu Ohki, Yokohama, JP;

Assignee:

NHK Spring Co., Ltd., Kanagawa, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47B 9/700 ;
U.S. Cl.
CPC ...
A47B 9/700 ;
Abstract

The engagement between the first and second members is accomplished by the wedging of roller members so that the first and second members can be held rotationally fast to each other in a continuous manner or at any desired angular position. A pair of roller members are received in a chamber defined between the first and second members, and are normally urged into wedging engagement in the circumferential ends of the chamber under the spring force of a spring member, but may be disengaged so as to allow free relative rotation between the first and second members by displacing the roller members toward each other against the spring force of the spring member by using actuation members. Thus, the relative rotation in either direction can be prevented, and the releasing of the first and second members can be accomplished simply by slightly moving the roller members.


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