Ignition interlock system
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United States of America Patent
Stats
-
Nov 19, 1991
Grant Date -
N/A
app pub date -
Jun 11, 1990
filing date -
Jun 11, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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