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Title:
UNAUTHORIZED UNLOCKING PREVENTING DEVICE AND DOOR EQUIPPED WITH THE SAME
Document Type and Number:
Japanese Patent JP2002227475
Kind Code:
A
Abstract:

To provide an unauthorized unlocking preventing device adopted into a cylinder lock excellent in not only burglar-proof properties but also operability.

This device is provided with an operation part 6 for making an opening/closing member 5 for opening/closing a key inserting port of the cylinder lock locked in a closing state. The member 5 is formed with an approximately circular closing part 19 for closing/opening an opening 11 of a case 4. The operation part 6, which is urged to protrude from a through hole 13 of the case 4 and made capable of a push-in operation, is made to have a function of holding the member 5 in order to keep the key inserting port in an opened state after an operation makes the member 5 put into an opening state.


Inventors:
YAMAMOTO TETSUYA
FUKUHARA ATSUSHI
KAMESHITA TAKASHI
HOZUMI RYOICHI
Application Number:
JP2001000023587
Publication Date:
August 14, 2002
Filing Date:
January 31, 2001
Export Citation:
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Assignee:
YUSHIN SEIKI KOGYO KK
TOSTEM CORP
International Classes:
E05B45/06; E05B13/00; E05B17/18; (IPC1-7): E05B45/06; E05B13/00; E05B17/18
Attorney, Agent or Firm:
青山 葆 (外2名)



 
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