Anti-theft device
First Claim
1. In a motor-driven vehicle having a rotatable selector switch and having an electrical starter circuit including said selector switch and including a starter, and wherein said starter circuit is arranged to normally energize said starter when said selector switch has been rotated to a predetermined position at which said selector switch may close said starter circuit, the improvement which comprises:
- an anti-theft device arranged to normally interrupt said starter circuit to prevent said starter from being energized, and operable to complete said starter circuit only when said selector switch has been rotated to said predetermined position, said device includingpressure means operatively arranged to convert rotational movement of said selector switch toward said predetermined position into a flow of hydraulic fluid;
pressure responsive means arranged to interrupt said starter circuit and operatively arranged to receive such flow of hydraulic fluid, said pressure responsive means having two spaced terminals operatively arranged in said starter circuit and having a movable member biased to move away from said terminals but operable to move toward said terminals in response to said flow of hydraulic fluid; and
contact means mounted on said movable member and arranged to complete said starter circuit between said terminals only when said selector switch has been rotated to said predetermined position;
whereby said starter may not be energized unless said selector switch has been rotated to said predetermined position.
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Accused Products
Abstract
An automotive anti-theft device is operatively arranged to interrupt a vehicle'"'"'s starter circuit until the key-operated ignition selector switch has been physically rotated to the "start" position. The anti-theft device includes a mechanical device adapted to convert rotational movement of the selector switch into linear motion, a hydraulic piston arranged to convert such linear motion into a flow of hydraulic fluid, and a pressure responsive device mounted on the vehicle'"'"'s starter. The pressure responsive device has a movable member operatively arranged to move in response to such flow of hydraulic fluid, and is adapted to complete the starter circuit between two terminals thereof only when the selector switch has been rotated to the "start" position.
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Citations
9 Claims
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1. In a motor-driven vehicle having a rotatable selector switch and having an electrical starter circuit including said selector switch and including a starter, and wherein said starter circuit is arranged to normally energize said starter when said selector switch has been rotated to a predetermined position at which said selector switch may close said starter circuit, the improvement which comprises:
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an anti-theft device arranged to normally interrupt said starter circuit to prevent said starter from being energized, and operable to complete said starter circuit only when said selector switch has been rotated to said predetermined position, said device including pressure means operatively arranged to convert rotational movement of said selector switch toward said predetermined position into a flow of hydraulic fluid; pressure responsive means arranged to interrupt said starter circuit and operatively arranged to receive such flow of hydraulic fluid, said pressure responsive means having two spaced terminals operatively arranged in said starter circuit and having a movable member biased to move away from said terminals but operable to move toward said terminals in response to said flow of hydraulic fluid; and contact means mounted on said movable member and arranged to complete said starter circuit between said terminals only when said selector switch has been rotated to said predetermined position; whereby said starter may not be energized unless said selector switch has been rotated to said predetermined position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification