Communications: electrical – Land vehicle alarms or indicators – Of burglary or unauthorized use
Patent
1989-06-21
1991-01-08
Crosland, Donnie L.
Communications: electrical
Land vehicle alarms or indicators
Of burglary or unauthorized use
340539, 340542, 307 102, 200 6164, 70416, 70DIG49, 70dIG51, 180173, 180287, B60R 2510
Patent
active
049839489
ABSTRACT:
A car theft proofing system includes a sensor attached to or mounted adjacent a cylinder door lock for detecting insertion into the door lock of a door key or other article, an alarm device for giving an alarm, an alarm drive device for driving the alarm device, a control unit for causing the alarm device to give the alarm in response to signals received from the sensor and the alarm drive device, and a radio transmitter for transmitting a radio wave upon insertion of the article. The alarm drive device includes a portable remote control transmitter and a receiver disposed on a car body. The remote control transmitter includes an abnormality alarm for transmitting a theft signal in response to the radio wave transmitted from the radio transmitter.
REFERENCES:
patent: 3936673 (1976-02-01), Kelly et al.
patent: 4628300 (1986-12-01), Amato
patent: 4855710 (1989-08-01), Kikuchi et al.
Crosland Donnie L.
Greigg Edwin E.
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