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. 20, 2021

Filed:

Jun. 12, 2020
Applicant:

Toshihiro Shimada, Tokyo, JP;

Inventor:

Toshihiro Shimada, Tokyo, JP;

Assignee:

RICOH COMPANY, LTD., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 21/16 (2006.01); E05B 65/00 (2006.01);
U.S. Cl.
CPC ...
G03G 21/1619 (2013.01); E05B 65/006 (2013.01); G03G 21/1633 (2013.01);
Abstract

A holding mechanism for an opening and closing detection device includes a cam, a torsion coil spring, and a pressing member. The cam is rotatably supported in a housing. The torsion coil spring is attached to the cam or an inside of the housing and includes two ends extending in two directions. The pressing member biases one end of the two ends of the torsion coil spring and bring the other end of the two ends of the torsion coil spring into contact with the cam to apply a load to the torsion coil spring. The pressing member is attached to an outside of the housing while biasing the other end of the two ends of the torsion coil spring through an opening of the housing.


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