Title:
CYLINDER LOCK
Document Type and Number:
Japanese Patent JP3729752
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a cylinder lock which employs a lever tumbler, for instance, and is resistant to unauthorized unlocking operation such as picking.
SOLUTION: The cylinder lock is comprised of an outer cylinder, an inner cylinder sheathed by the outer cylinder in a rotatable manner, a tumbler arranged in the inner cylinder, and a locking bar arranged in the inner cylinder and energized in a manner engaging with the outer cylinder. According to the cylinder lock, the tumbler 1 includes an unlocking means 1a which can engage with the locking bar at an unlocking position to release the locking, and further the unlocking means 1a is comprised of dummy means 1b, 1c.
Inventors:
Hiroyuki Minemura
Application Number:
JP2001194670A
Publication Date:
December 21, 2005
Filing Date:
June 27, 2001
Export Citation:
Assignee:
Sanpo Rock Sales Co., Ltd.
International Classes:
E05B15/00; E05B29/00; (IPC1-7): E05B15/00; E05B29/00
Domestic Patent References:
| JP57100268A | ||||
| JP62194374A | ||||
| JP3047386A | ||||
| JP2002188333A |
Attorney, Agent or Firm:
Isao Sasaki
Kyoko Kawamura
Kyoko Kawamura
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