Alarm unit for preventing theft of vehicles

Details Alarm unit for preventing theft of vehicles Alarm unit for preventing theft of vehicles

1981-04-06

1982-06-29

Waring, Alvin H.

Communications: electrical

Selective

Having indication or alarm

340545, 307 10AT, B60R 2510

Patent

active

043374549

ABSTRACT:
An alarm unit is provided which prevents a theft of a vehicle by producing acoustical alarm whenever a third party opens a door of the vehicle. The unit operates by applying a remote control signal from an external signal emitter to a pickup assembly which is mounted inside the vehicle on a front or a rear glass pane. A control circuit connected to the pickup assembly is then set in its standby mode, and conditions the unit to produce an acoustical alarm if the door is opened during such mode. The standby mode is reset by a second application of the remote control signal to the pickup assembly.

REFERENCES:
patent: 3848243 (1974-11-01), Schirmer

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