EP 0081765 A3 19840208 - THEFT PROTECTION DEVICE FOR MOTOR VEHICLES
Title (en)
THEFT PROTECTION DEVICE FOR MOTOR VEHICLES
Publication
Application
Priority
- DE 3149259 A 19811211
- DE 3240945 A 19821105
Abstract (en)
[origin: EP0081765A2] 1. Anti-theft security apparatus for motor vehicles, having a first transmitter for the wire-less and contact-less transmission of a code signal to a receiver situated in or on the vehicle which renders use of the motor vehicle possible in the case of conformity of the code signal with a stored code signal characterised by a second transmitter for a second signal of like nature, the orientation of which is differently selected from that of the transmitter (8) for the code signal (I) in such a way that, if the code signal transmitter (8) is orientated to the receiver (2), the second signal arrives only considerably attenuated or not at all at the receiver (2).
IPC 1-7
IPC 8 full level
G07C 9/00 (2006.01)
CPC (source: EP)
G07C 9/00182 (2013.01); G07C 2009/00785 (2013.01)
Citation (search report)
- [A] DE 2909134 A1 19790920 - NEIMAN GMBH & CO KG
- [A] DE 2911828 A1 19801016 - VDO SCHINDLING
- [AD] DE 2437314 A1 19760212 - SCHUBERT THOMAS
- [AD] DE 2926304 A1 19810129 - DAIMLER BENZ AG
Designated contracting state (EPC)
FR GB IT SE
DOCDB simple family (publication)
EP 0081765 A2 19830622; EP 0081765 A3 19840208; EP 0081765 B1 19860402; EP 0081765 B2 19910703
DOCDB simple family (application)
EP 82111179 A 19821202