Title:
INFORMATION DEVICE FOR INSERTION OF KEY
Document Type and Number:
Japanese Patent JP2002201835
Kind Code:
A
Abstract:
To provide a device to prevent a door from being opened by picking and inform us thereof before the door is opened, and protect one's life and property.
A microswitch is mounted in the part of disc tumblers by making use of the movement that a key (foreign matter) vertically or laterally moves in the disc tumblers when inserted, so that a switch is turned on to emit a sound before unlocking.
Inventors:
MAENO MINORU
Application Number:
JP2000404953A
Publication Date:
July 19, 2002
Filing Date:
December 28, 2000
Export Citation:
Assignee:
MAENO MINORU
International Classes:
E05B45/10; E05B17/22; (IPC1-7): E05B45/10; E05B17/22