SECURITY SYSTEM FOR A VEHICLE

• US 3,735,346 A
• Filed: 09/23/1970
• Issued: 05/22/1973
• Est. Priority Date: 09/23/1970
• Status: Expired due to Term

• Current Assignee: Ralph W. Fox
• Original Assignee: Ralph W. Fox
• Inventors: Fox, Ralph W.
• Primary Examiner(s): Waring, Alvin H.
• Application Number:
  US05/074,728
• Time in Patent Office: 972 Days
• Field of Search: 340/63,64,65,53,274,276,278,309.1,309.4 180/114
• US Class Current: 180/287
• CPC Class Codes: B60R 25/1001 Alarm systems associated with another car fitting or mechanism, e.g. door lock or knob, pedals features related to the general power supply B60R25/1018
• CPC Class Codes: B60R 25/1018 Alarm systems characterised by features related to the general power supply

Abstract

A security system for a vehicle in which the opening of any sealed door establishes an alert signal that is applied to a time delay controller that operates a pair of disabler devices to halt the vehicle at a preselected time interval after initiation of the alert signal. One disabler device shuts off fuel to the vehicle propulsion engine and the other disabler device activates the vehicle brakes.

Claims

1. A security system for a vehicle having a fuel-fed propulsion means and a braking means which comprises a sensor means disposed to sense the opening of any sealed door of the vehicle, said door opening constituting the occurrence of a security hazard event to be counteracted by disabling the vehicles, said sensor including at least one main switch connected to an electric source, and operable to establish an alert signal upon the occurrence of such event;

a signal transmission line connected to said main switch;

means connected to said transmission line responsive to said alert signal for establishing a command signal;

at least one vehicle disabler means coupled to said comMand means operable to effect a predetermined disablement of the vehicle in response to the establishment of said command signal and control means interposed in said transmission line between said switch and said command means, said control means includes a latching relay comprising an armature and a pair of activating coils, one of said coils being connected to said transmission line to cause said armature to move in a first direction on closing of said switch, the other of said coils being connected directly to said electric source and being provided with switch means to cause said armature to move in a direction opposite to said first direction, armature being adapted to close a set of contacts to said command means on movement in said first direction and to open said set of contacts on movement in said opposite direction, and a time delay relay interposed between the armature contacts and said command signal means to delay the transmission of an alert signal from said main switch to said command signal means.

2. A security system according to claim 1 wherein said vehicle disabler means includes a valve operable in response to said command signal to interrupt the feeding of fuel to the vehicle propulsion means.

3. A security system according to claim 1 wherein said vehicle disabler means includes a valve coupled to the braking means of the vehicle and operable in response to said command signal to activate said braking means and thereby halt the vehicle.

4. A security system according to claim 1 including a plurality of vehicle disabler means coupled to said control means for simultaneous control thereby, one of said disabler means including a valve operable in response to said command signal to interrupt the feeding of fuel to the vehicle propulsion means, another of said disabler means including a valve coupled to the braking means of the vehicle and operable in response to said command signal to activate said braking means, whereby upon establishment of the command signal a plurality of distinct disablements are effected upon the vehicle, any one disablement being sufficient to halt the vehicle.

5. A security system according to claim 1 wherein said predetermined disablement of the vehicle occurs while the vehicle is in motion.