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Patent Searching and Data


Title:
LOCK PROTECTION MECHANISM
Document Type and Number:
Japanese Patent JP2009162040
Kind Code:
A
Abstract:

To provide a lock protection mechanism capable of effectively coping with illegal unlocking of door locks such as picking, bumping or the like.

The lock protection mechanism, while enabling unlocking and locking of the door locks with a proper key, is effective as a countermeasure against the illegal unlocking by breakage by concealing the door lock and the lock hole to minimize their exposure on the outdoor side, and furthermore, by making it hard to recognize the type of the door locks to make operations inside the lock harder of inserting various tools through the key hole.


Inventors:
DOI KEIJI
Application Number:
JP2008000025717
Publication Date:
July 23, 2009
Filing Date:
January 09, 2008
Export Citation:
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Assignee:
DOI KEIJI
International Classes:
E05B17/20; E05B17/18; E05B45/10