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:
Mar. 20, 2012
Filed:
Sep. 20, 2005
Tetsuyuki Tsukano, Kanagawa-ken, JP;
Takahiro Okada, Kanagawa-ken, JP;
Tetsuyuki Tsukano, Kanagawa-ken, JP;
Takahiro Okada, Kanagawa-ken, JP;
Alpha Corporation, Yokohama-shi, JP;
Abstract
An electric lock device including a movable member, a cam plate () rotated in an unlocking direction and a locking direction by the driving of a drive source, and a lock member () including a cam contact surface () in contact with a sliding surface () of the cam plate (). The lock member () follows the sliding surface () to be displaced between a locking position for inhibiting the movement of the movable member and an unlocking position for allowing the movement of the movable member. The cam profile of the sliding surface () is set so that the rotary torque of the cam plate () necessary for moving the lock member () from the locking position to the unlocking position can be maintained at approximately a constant value.