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. 26, 1996
Filed:
Nov. 29, 1994
Applicant:
Inventors:
Yoshinobu Oyabu, Aichi, JP;
Shozo Kito, Aichi, JP;
Assignee:
Kabushiki Kaisha Tokai Rika Denki Seisakusho, Aichi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E05B / ;
U.S. Cl.
CPC ...
7037 / ; 70422 ;
Abstract
When a key other than a regular key or the like is inserted to forcibly rotate a key rotor, a coupling member is moved in a direction indicated by an arrow by an uncoupling mechanism. This movement uncouples a rear rotor from the coupling member. As a result, the key rotor and a sleeve only rotate idly, and the rear rotor and a lock lever are not rotated. Hence, a cylinder lock is not unlocked, and no damaging force is never applied to components of the cylinder lock such as tumblers.