| 摘要 |
PROBLEM TO BE SOLVED: To provide a crime prevention tool for preventing illicit intrusion using a spare key or the like without needing any work to a door itself in an entrance or gateway. SOLUTION: A cylinder stopper which butts against a cylinder key to disable locking and unlocking by the cylinder key and a cylinder are attached to a lever handle of an existing lever handle lock, and a rubber hand with a hook is laid over among two upper and lower suction cups attached to the door inner surface, the cylinder stopper, and the cylinder. COPYRIGHT: (C)2008,JPO&INPIT
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