Title:
CYLINDER LOCK
Document Type and Number:
Japanese Patent JP3664455
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a new cylinder lock which is difficult to pick.
SOLUTION: An inner cylinder of a cylinder lock is divided into an outside end inner cylinder unit 11 having at least one tumbler 3 and a plurality of inner cylinder units which are adjacent to this outside end inner cylinder unit 11 and includes a second inner cylinder 12 having at least one tumbler 3 and a substantially triangle-shaped notched area 14, whose wide area precedes when the inner cylinder is turned in the unlocking direction, is formed on the outer peripheral part of an inner end face of the outside end inner cylinder unit 11. One end of a roller 15 is housed in this notched area 14, thereby constituting one way clutch and forming a recessed area 16 having a pair of end edges which clamps the other end in the circumferential direction at an angle position which substantially matches with the notched area 14 of the outer peripheral part of the outer end face of the second inner cylinder unit 12.
Inventors:
Azumi Waki
Application Number:
JP21421095A
Publication Date:
June 29, 2005
Filing Date:
July 31, 1995
Export Citation:
Assignee:
Miwa Lock Co., Ltd.
International Classes:
E05B29/02; (IPC1-7): E05B29/02
Domestic Patent References:
| JP3125171U | ||||
| JP48025650Y1 | ||||
| JP63188050U |
Attorney, Agent or Firm:
Takeo Iida