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:
Dec. 24, 1991
Filed:
Oct. 22, 1990
Young C Kim, Kaepo-Dong, Kangnam-Ku, Seoul, KR;
Young K Kwak, Mok-Dong, Yangchun-Ku, Seoul, KR;
Other;
Abstract
A lock device which includes a permanent magnetic key, a rotary circular cylinder having a key aperture, a plurality of main apertures which each contain a main locking pin with a main coil spring and permanent magnet, respectively, and a tubular cylinder having a plurality of auxiliary apertures for mating with the main apertures which contain an auxiliary locking pin with an auxiliary spring, respectively, whereby in a locked position, the auxiliary locking pins are located between the rotary circular and tubular cylinders, and in an unlocked position, when the permanent magnetic key is inserted into the key aperture, the auxiliary locking pins and the permanent magnets are moved to the tubular and rotary circular cylinders, respectively, so that the lock device is unlocked.