Title:
CODE MATCHING LOCK
Document Type and Number:
Japanese Patent JP3720207
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent an inadvertent shift to a locked state by providing initial display codes forming an initial code train in an unlocked state on a dial, and prohibiting a locking scan on an unlocking code train including the initial display codes.
SOLUTION: Codes forming an unlocking code train and initial codes 3 not forming the unlocking code train are displayed on the outer periphery of a dial 1. A user operates the dial 1 to set an unlocking code train with the codes forming the unlocking code train other than the initial display codes 3. If the unlocking code train selected by the user includes just one of the initial display codes 3, a locking action is prohibited, and the user is requested to set an optional unlocking code train by operating all dials 1. When the user closes a door and intends to rotatively operate an operation knob in the locking direction without noticing the rotation of any one dial 1, the user cannot rotate the operation knob. An inadvertent locking action can be surely prevented, and the operability is improved.
Inventors:
Junichi Goto
Application Number:
JP5038799A
Publication Date:
November 24, 2005
Filing Date:
February 26, 1999
Export Citation:
Assignee:
Alpha Co., Ltd.
International Classes:
E05B37/02; (IPC1-7): E05B37/02
Domestic Patent References:
| JP9317271A | ||||
| JP84381A |
Attorney, Agent or Firm:
Masao Yamakawa
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