EP 0757144 A1 19970205 - Combination lock
Title (en)
Combination lock
Title (de)
Kombinationsschloss
Title (fr)
Serrure à combinaisons
Publication
Application
Priority
EP 95305501 A 19950804
Abstract (en)
A combination lock includes a dial shaft (22) adapted to be rotated with a user's hand, a fore lock plate (38a), at least one intermediate lock plate (38b,c) and a rear lock plate (38d) arranged in parallel with each other, and a driving plate (33) integrally fitted to the rear end of the dial shaft (22). A plurality of unlocking cutouts (35,41a,b,c,d) are formed on the outer peripheries of the driving plate (33) and all the lock plates (38a-d) so as to allow a lock pawl (A) to be received in the unlocking cutouts when the latter are located in alignment with each other. A driving gear (36) having a large diameter is formed in the driving plate (33), and a follower gear (43) having a small diameter is formed on the fore lock plate (38a). Both the gears mesh with each other at a gear ratio via an idle gear (44) so as to allow both the gears (36,43) to be rotated in the opposite direction. The gear ratio is determined such that all the lock plates (38a-d) are followably rotated as a dial knob is turned with a user's hand. Usually, the number of lock plates is four, and the gear ratio of the driving gear (36) to the follower gear (43) is set 3 : 1. <IMAGE>
IPC 1-7
IPC 8 full level
E05B 37/08 (2006.01)
CPC (source: EP)
E05B 37/08 (2013.01)
Citation (search report)
- [A] US 1513230 A 19241028 - DONOHUE NORMAN E
- [A] US 1366868 A 19210125 - BRAUN ANDREW J, et al
- [A] DE 667249 C 19381107 - HERMANN BODE
- [A] FR 1226470 A 19600713
- [A] PATENT ABSTRACTS OF JAPAN vol. 14, no. 583 (M - 1064) 26 December 1990 (1990-12-26)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0757144 A1 19970205; EP 0757144 B1 20001102; DE 69519291 D1 20001207; DE 69519291 T2 20010712
DOCDB simple family (application)
EP 95305501 A 19950804; DE 69519291 T 19950804