Title:
SAFETY KEY AND LOCK
Document Type and Number:
Japanese Patent JP2005163504
Kind Code:
A
Abstract:
To solve a problem in a conventional key and lock wherein safety is enhanced by using a plurality of keys and locks with the same basic structure, but the basic structure is comparatively simple and much damage is caused by abuse of technique for unlocking it.
The key and lock of high safety are provided by combining an optical key and lock using infrared rays or light with other wavelength, with the conventional mechanical key and lock.
Inventors:
SAITO HIROSHI
Application Number:
JP2003436036A
Publication Date:
June 23, 2005
Filing Date:
November 28, 2003
Export Citation:
Assignee:
SAITO HIROSHI
MORIJIRI HIROYUKI
MORIJIRI HIROYUKI
International Classes:
E05B35/00; (IPC1-7): E05B35/00