EP 0042886 A1 19820106 - Electronic locking device.
Title (en)
Electronic locking device.
Title (de)
Elektronisches Schlossystem.
Title (fr)
Dispositif électronique de verrouillage.
Publication
Application
Priority
JP 9107180 A 19800701
Abstract (en)
An electronic locking device having a memory circuit (14) for memorizing intrinsic codes and a digital watch (6) to indicate variable codes as time goes. The input-code for unlocking an object is given by calculation of the intrinsic figure and the variable figure. In the control unit (13) the variable figure is deduct from the input-code, and the remainder is identified if it is in agreement with the intrinsic figure. Unlocking is made only when the remainder agrees with the intrinsic figure.
IPC 1-7
IPC 8 full level
E05B 49/00 (2006.01); G07C 9/00 (2006.01)
CPC (source: EP)
G07C 9/00698 (2013.01); G07C 9/33 (2020.01)
Citation (search report)
- US 4093870 A 19780606 - EPSTEIN LAWRENCE J
- US 3587051 A 19710622 - HOVEY JOHN MORRIS
- US 3893073 A 19750701 - ANGELLO PAUL S
- US 3812403 A 19740521 - GARTNER K
Designated contracting state (EPC)
CH DE FR GB IT
DOCDB simple family (publication)
EP 0042886 A1 19820106; EP 0042886 B1 19841003; DE 3069363 D1 19841108; JP S5715779 A 19820127; JP S6221954 B2 19870515
DOCDB simple family (application)
EP 80105971 A 19801002; DE 3069363 T 19801002; JP 9107180 A 19800701