EP 0033261 B1 19840516 - PERMUTATION SECURITY LOCKS
Title (en)
PERMUTATION SECURITY LOCKS
Publication
Application
Priority
FR 8001673 A 19800125
Abstract (en)
[origin: US4340925A] The opening order of this safety lock causes the following operations to occur successively: application, to the key, of a coded sequence of angular solicitations in both directions, then the free rotation of this key in a given direction. The decoding is ensured electrically by comparing, with a previously memorized reference sequence, the train of electrical pulses generated by two electromechanical transducers actuated, according to the sequence applied to the key, by a cam itself driven by this key.
IPC 1-7
IPC 8 full level
E05B 49/00 (2006.01)
CPC (source: EP US)
E05B 49/004 (2013.01 - EP US); Y10T 70/7079 (2015.04 - EP US); Y10T 70/7124 (2015.04 - EP US)
Citation (examination)
- US 3979052 A 19760907 - DETTLING JOSEPH R, et al
- US 3660729 A 19720502 - JAMES CHARLES FITZHUGH, et al
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0033261 A1 19810805; EP 0033261 B1 19840516; AT E7525 T1 19840615; CA 1230234 A 19871215; DE 3163542 D1 19840620; FR 2474574 A1 19810731; FR 2474574 B1 19820212; US 4340925 A 19820720
DOCDB simple family (application)
EP 81400056 A 19810116; AT 81400056 T 19810116; CA 368911 A 19810120; DE 3163542 T 19810116; FR 8001673 A 19800125; US 22676181 A 19810121