Ignition interlock system

Details Ignition interlock system Ignition interlock system

1990-06-11

1991-11-19

Wolfe, Robert L.

Locks

Special application

For automotive vehicles

248252, B60R 2500

Patent

active

050656040

ABSTRACT:
The ignition interlock system prevents movement of the ignition switch of a motor vehicle from the "Off" position to the "Lock" position unless the transmission selector is in the "Park" position. The ignition interlock system includes a locking lever spring biased to lock the reciprocable slide of the ignition switch mechanism when the transmission selector is not in the "Park" position. The locking lever is unlocked from the reciprocable slide by energization of a solenoid in response to the transmission selector being placed in the "Park" position with the ignition key inserted in the ignition switch. A control circuit energizes or deenergizes the solenoid in response to input signals representing the transmission selector position and the ignition key in/out position.

REFERENCES:
patent: 3827526 (1974-08-01), Smith
patent: 4232538 (1980-11-01), Detloff, Jr.
patent: 4232571 (1980-11-01), Kimberlin
patent: 4235123 (1980-11-01), Simancik
patent: 4270624 (1981-06-01), Jessop
patent: 4520640 (1985-06-01), Kramer
patent: 4596303 (1986-06-01), Tremblay
patent: 4884423 (1989-12-01), Fancher
patent: 4936158 (1990-06-01), Livshits et al.
patent: 4959982 (1990-10-01), Mauz
patent: 4967889 (1990-11-01), Kito
patent: 4982584 (1991-01-01), Takeda

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