Vehicle intruder detection system
AssigneeThe Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland
InventorJohn Connolly
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Abstract
A vehicle intruder detection system including at least one pressure operated switch which comprises a first, movable, conductive strip contact and a second, fixed, conductive strip contact. The second contact is attached to a fixed surface located within a vehicle interior so that the first contact is located in proximity, but not fixedly attached, to an internal face of a vehicle window. Each switch is connected into a circuit which incorporates an alarm, which is then triggered by application of a force to the external surface of a window sufficient to bring the first and second contacts together to close one of the switches.
Claims9
A vehicle intruder detection system comprising at least one pressure operated switch connected into a circuit with an electrical source and detection means capable of detecting variations in the state of the circuit, wherein each switch has a first, movable contact and a second, fixed contact, each contact comprising a strip of electrically conductive material, and at least one spacer element of electrically insulating material located between the first contact and the second contact whereby contacts are spaced apart from one another, the second contact being attached to a fixed surface located within a vehicle interior so that the first contact is located in proximity, but not fixedly attached, to an internal face of a vehicle window, such that the application of a predetermined force to the external surface of the protected window causes the first and second electrical contacts to be brought into contact by displacement of the first electrical contact thereby actuating the switch.
Dependencies are inferred from the claim text.