Title:
CYLINDER LOCK
Document Type and Number:
Japanese Patent JP3276241
Kind Code:
B2
Abstract:
PURPOSE: To provide a cylinder lock which is prevented from a destruction attempted by a drill and also caused by application of shock to its plug.
CONSTITUTION: A pressure receiving surface 18 intersecting the inside surface of a case 15 and a large diametric inside circumferential surface 19 extending to the front face of the case 15 farther than the pressure receiving surface 18 are provided ahead of a driver pin furnished on the case 15, and a swell-out part 24 in slide contact with the pressure receiving surface 18 and inside circumferential surface 19 is provided at the peripheral surface of a plug 21 and is equipped with steel ball accommodating chambers 25, 27 which accommodate steel balls 26, 28 positioned on the extension line of the peripheral surface of the plug 21.
Inventors:
Yoshiaki Yanagawa
Application Number:
JP8950694A
Publication Date:
April 22, 2002
Filing Date:
April 27, 1994
Export Citation:
Assignee:
Alpha Co., Ltd.
International Classes:
E04F21/00; B24B27/00; B24D9/08; E05B15/00; E05B15/16; E05B17/00; E05B17/20; E05B27/06; E05B27/10; (IPC1-7): E05B15/16; E05B17/00; E05B27/10
Domestic Patent References:
| JP6200666A | ||||
| JP2164985A | ||||
| JP5835560U | ||||
| JP5500398A |
Attorney, Agent or Firm:
Hideo Takino (3 others)