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:
Jun. 20, 1989
Filed:
Apr. 10, 1987
Motohiro Gotanda, Abiko-shi, Chiba-ken, JP;
Other;
Abstract
The lock device comprises a locking portion and a fixing portion. The locking portion comprises a rotation lever mounted on a door side and turned by rotating a thumbturn or a key, a dead bolt engaging with the rotation lever and performing lock and release of the lock device by turning the rotation lever, a trigger bolt for locking the dead bolt, a rotating plate operating in a direction of draw in the dead bolt to the door side, and a latch bolt drawn in to the door side by the action of the rotating plate. The fixing portion comprises a strike mounted on a frame side of the door, a pressing lever for locking the dead bolt and pressing the trigger bolt onto the strike, means for causing the pressing lever to operate, and means for releasing press operation of the pressing lever and causing the trigger bolt to project to the door frame side.