EP 0030587 A1 19810624 - Electronic locking device.
Title (en)
Electronic locking device.
Title (de)
Elektronische Verriegelungsvorrichtung.
Title (fr)
Dispositif d'immobilisation électronique.
Publication
Application
Priority
- JP 801380 A 19800125
- JP 3838580 A 19800325
- JP 17274979 A 19791228
- JP 17613679 A 19791218
- JP 18102579 A 19791225
Abstract (en)
An unlocking device having a circuit (22) to judge if the voltage of the ordinary power source (11,15) circuit incorporated in a device to operate an electric driver (13) is maintained at a specified level. When the voltage of the said ordinary power source (11,15) circuit is not maintained at the specified level, the said electric driver (13) is conducted for unlocking by an external power source (28) through the circuit (23) having the connection terminals to the said external power source (28).
IPC 1-7
IPC 8 full level
G07C 9/00 (2006.01)
CPC (source: EP)
G07C 9/0069 (2013.01)
Citation (search report)
- DE 2247767 B2 19760812
- GB 1414120 A 19751119 - LEWIS SECURITY SYST LTD
- US 3755718 A 19730828 - NICHOLSON N
- US 3663867 A 19720516 - FISTER LOUIS P
- DE 2548889 A1 19760520 - COMINIERE BRUESSEL SA [BE], et al
- US 4148092 A 19790403 - MARTIN RICKY
- DE 2909134 A1 19790920 - NEIMAN GMBH & CO KG
- RADIO AND ELECTRONICS CONSTRUCTOR, Vol. 29, No. 2, September 1975 London C.K. SELLEN "Parallel S.C.R. combination lock" pages 78 to 81 * Page 80, right column to page 81, paragraph 1 *
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
DOCDB simple family (application)
EP 80105643 A 19800919