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Title:
SAFETY DEVICE
Document Type and Number:
Japanese Patent JP2000145218
Kind Code:
A
Abstract:

To improve safety of a lock by making picking invalid.

This safety device includes a thumb-turn shaft 5 having a deformed cross section part 12 formed in a part thereof along the longitudinal direction, a lock plate 13 which is guided movably in a plane vertical to the thumb-turn shaft 5 and has a cutout engaged with the deformed cross section part 12 to restrict turning of the thumb-turn shaft 5, and an electromagnetic actuator 14 for selectively driving the lock plate 13 to a lock position where the cutout is engaged with the deformed cross section part 12 and an unlock position where it is separated from the deformed cross section part 12.


Inventors:
WAKE MASAO
Application Number:
JP1998000342348
Publication Date:
May 26, 2000
Filing Date:
November 16, 1998
Export Citation:
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Assignee:
MIWA LOCK KK
International Classes:
E05B17/20; E05B35/12; E05B47/00; E05B55/00; (IPC1-7): E05B47/00; E05B17/20; E05B35/12; E05B55/00
Attorney, Agent or Firm:
飯田 岳雄



 
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