Electrical transmission or interconnection systems – Vehicle mounted systems – Automobile
Patent
1996-08-30
1997-12-09
Elms, Richard T.
Electrical transmission or interconnection systems
Vehicle mounted systems
Automobile
180287, B60R 2504
Patent
active
056964080
ABSTRACT:
A secondary ignition switch system that connects to a conventional ignition switch system of a vehicle to provide a security function. The secondary ignition system includes a dashboard mounted double-pole-double-throw (DPDT) switch and a key operated secondary ignition switch. The DPDT switch controls the operation of the primary and secondary ignition switches. To start the engine the DPDT is set to a position to power the secondary ignition switch, such that the engine can be started by turning a secondary key. However, based on the interconnection of the ignition switches the steering column of the vehicle remains locked. Only until the operator uses the primary key to unlock the steering assembly can the car be driven. This system enables the engine of a vehicle to run including powering the accessory circuit (for heating/cooling and power accessories) to warm a vehicle in cold climates with minimized risk since the steering assembly remains locked. In addition, when the secondary key is removed from the secondary ignition switch no current flows to the primary ignition switch rendering the entire system disabled.
REFERENCES:
patent: 3968666 (1976-07-01), MacKinnon
patent: 4107543 (1978-08-01), Kaplan
patent: 4313520 (1982-02-01), Chester
patent: 4335370 (1982-06-01), Scalley et al.
patent: 4403675 (1983-09-01), Cardwell
patent: 4452197 (1984-06-01), Weber
patent: 4596303 (1986-06-01), Tremblay
patent: 5079435 (1992-01-01), Tanaka
patent: 5115145 (1992-05-01), Westberg et al.
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