Title:
DOUBLE LOCK SYSTEM
Document Type and Number:
Japanese Patent JP2002295075
Kind Code:
A
Abstract:
To provide a double lock device having a master key and an auxiliary key capable of effectively preventing illegal unlocking.
This double lock device 1 is provided with a master lock 2 having a lock plate 5, an auxiliary lock 3 having a timer side cam 9 for regulating the movement of the lock plate 5 and a cylinder cam 10, and a spiral spring type timer 8 for driving the timer side cam 9 according to unlocking of the auxiliary lock 3, moving a part of the timer side cam 9 to a position for regulating the movement of the lock plate 5 after the lapse of a designated time to prevent the master lock 2 from being unlocked.
Inventors:
MARUOKA YOSHIHARU
Application Number:
JP2001105534A
Publication Date:
October 09, 2002
Filing Date:
April 04, 2001
Export Citation:
Assignee:
MARUOKA YOSHIHARU
International Classes:
E05B35/12; E05B43/00; E05B63/14; (IPC1-7): E05B35/12; E05B43/00; E05B63/14
Attorney, Agent or Firm:
Fukami Hisaro (2 outside)