Burglarproof device for electronic equipment adapted to be mount

Details Burglarproof device for electronic equipment adapted to be mount Burglarproof device for electronic equipment adapted to be mount

1990-03-12

1992-04-21

Crosland, Donnie L.

Communications: electrical

Land vehicle alarms or indicators

Of burglary or unauthorized use

340457, 307 91, 307 101, 307 102, 455346, 455348, B60R 2510, B60Q 100

Patent

active

051072440

ABSTRACT:
A burglarproof device includes an accessory switch detection circuit for detecting ON/OFF states of an accessory switch provided in a vehicle. An accessory switch detection signal is sent to an alarm generation circuit. The alarm generation circuit generates an alarm signal when the accessory switch is in an OFF state. This alarm signal alarms that a detachable electronic equipment adapted to be mounted in vehicles which has been mounted in a vehicle is actually attached to the vehicle. This alarm informs a driver that he forgets detachment of the electronic equipment adapted to be mounted in vehicles, thus preventing burglarly.

REFERENCES:
patent: 4866416 (1989-09-01), Holzhauer et al.
patent: 4906969 (1990-03-01), Ghazarian
patent: 4945335 (1990-07-01), Kimura et al.

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