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:
Sep. 18, 1990
Filed:
Sep. 08, 1989
Naokatsu Okamura, Aichi, JP;
Noboru Yamaguchi, Aichi, JP;
Shuji Masuda, Aichi, JP;
Noboru Kanou, Aichi, JP;
Kabushiki Kaisha Tokai Rika Denki Seisakusho, Aichi, JP;
Abstract
A locking apparatus with a key comprising a cylindrical body, a cylindrical operation member mounted inside the body, a first spring for returning the operation member to an original position, a key rotor mounted inside the operation member, a second spring for urging the key rotor to rotate to an original position, a limiting member provided in the key rotor, a third spring for urging the limiting member to project outwardly from the key rotor, an engagement portion disposed in the body, the engagement portion being engaged with the limiting member projected outwardly by the third spring when the operation member is pushed inwardly by a predetermined stroke along the axis against the first spring by a manual operation, and a disengagement portion provide in the body, the disengagement portion unlocking the limiting member from the engagement portion thereby returning the operation member and the key rotor to original positions under the elastic forces of the first and second springs in response to rotation of said key rotor.