Nan Zhou

US Patent:

20100050715, Mar 4, 2010

Filed:

Aug 26, 2008

Appl. No.:

12/198855

Inventors:

Ming Xing Hu - Nanchang, CN
Nan Zhou - Derwood MD, US

International Classification:

E05B 47/00
E05B 29/14

US Classification:

70356, 70413

Abstract:

A magnetic coded lock mechanism which includes a key having a plurality of recesses and a plurality of permanent magnets properly coded around the key body, a cylindrical plug having a keyway aperture, a plurality of main apertures as passages, which contain movable key pins, a plurality of auxiliary apertures as magnetic locking passages corresponding to coded key, which contain movable magnets, a plurality of fixed magnets coded around the cylindrical plug as the way for biasing the magnets and locking pins toward the keyway, and a stationary tubular cylinder having a longitudinal aperture disposed in the center for receiving the cylindrical plug, a plurality of radial main apertures as passages for mating with the main apertures of the cylindrical plug, each passage containing a driver pin with a coil spring, and radial auxiliary apertures as passages for mating with the auxiliary apertures of the cylindrical plug, each passage containing a locking pin, whereby in a locked position, the driver pins and locking pins straddle both passages to prevent relative movement between the cylindrical plug and the tubular cylinder, and in an unlocked position, when the key is insert into the keyway, the key recesses drive the key pins in the main apertures of the cylindrical plug to a predetermined level and the movable magnets in auxiliary apertures of the cylindrical plug are repelled radially outward along the passages to a predetermined level respectively, so as to cause unlocking of the magnetic lock mechanism.