Communications: electrical – Selective – Having indication or alarm
Patent
1975-09-09
1977-07-05
Caldwell, John W.
Communications: electrical
Selective
Having indication or alarm
307 10AT, 200 617, B60R 2510, H01H 5306
Patent
active
040343375
ABSTRACT:
Vehicle alarm apparatus including a control circuit for energizing the horn of the vehicle upon the unauthorized tampering with selected parts of the vehicle. A reed switch is mounted adjacent the gas tank fill pipe so as to be operated by a magnet mounted in movable relation thereto, as, for example, on the closure door for the fill pipe, and a control circuit is provided which has a plurality of connecting points, each of which can be connected to a variety of existing circuits of selected electrical components of the vehicle including the reed switch circuit. The control circuit is capable of energizing the horn of the vehicle in response to a predetermined change of condition in such circuits, even where the predetermined changes of the circuit conditions for the various circuits are dissimilar.
REFERENCES:
patent: 3422398 (1969-01-01), Rubin
patent: 3549839 (1970-12-01), Hill et al.
patent: 3636485 (1972-01-01), Weathers
patent: 3805231 (1974-04-01), Santoli
patent: 3873966 (1975-03-01), Tanner
patent: 3896404 (1975-07-01), Peterson
patent: 3924086 (1975-12-01), Ochsner
patent: 3930226 (1975-12-01), Plumberg
patent: 3938079 (1976-02-01), Croisier
Caldwell John W.
Electronic Devices, Inc.
Nowicki Joseph E.
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