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:
Jan. 06, 2009
Filed:
Apr. 04, 2007
Jun Yamaguchi, Aichi-ken, JP;
Toshiharu Katagiri, Aichi-ken, JP;
Jun Yamaguchi, Aichi-ken, JP;
Toshiharu Katagiri, Aichi-ken, JP;
Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho, Aichi-ken, JP;
Abstract
In a key cylinder a stopper plate is pressed into an imposing hole of a rotor, latching to a body and also intruding into engagement grooves of a second sleeve. When an authentic key is inserted into the rotor and rotated, a first sleeve is not rotated, and a second sleeve is rotated through the stopper plate. When a false key is inserted into the rotor the first sleeve rotates and the second sleeve is slid to the rear by slide bars, therefore the stopper plate separates from the engagement grooves, and the second sleeve is not rotated. The stopper plate has the function of being able to stop the movement of the rotor in the forward-rearward direction, and also the function of making the second sleeve rotatable by the rotation of the rotor, and so the construction of the key cylinder is simplified.