Vehicle anti-theft alarm system
First Claim
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1. An alarm system for a vehicle or trailer comprising:
- input means adapted for connection to an electrical power source;
time delay means having an input and an output for applying electrical power to said output after electrical power has been applied to said input for a preset time;
a vibration-responsive switch coupled to said time delay means input and to said input means and responsive to vibration for coupling said time delay means input to said input means; and
a first alarm circuit connected to said time delay means output and adapted for connection to a first alarm device for applying electrical power from said time delay means output to the first alarm device.
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Abstract
An alarm system for a vehicle or trailer, the system comprising an alarm circuit which is energizable after a predetermined time period responsively to actuation of a control circuit of the system, and switch means for controlling the operating state of the control circuit.
7 Citations
23 Claims
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1. An alarm system for a vehicle or trailer comprising:
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input means adapted for connection to an electrical power source; time delay means having an input and an output for applying electrical power to said output after electrical power has been applied to said input for a preset time; a vibration-responsive switch coupled to said time delay means input and to said input means and responsive to vibration for coupling said time delay means input to said input means; and a first alarm circuit connected to said time delay means output and adapted for connection to a first alarm device for applying electrical power from said time delay means output to the first alarm device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification