Shifter mounted brake-transmission interlock
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United States of America Patent
Stats
-
Nov 5, 1991
Grant Date -
N/A
app pub date -
Jun 4, 1990
filing date -
Jun 4, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A shifter for an automatic transmission is prevented from shifting out of park position when the ignition switch is on unless the service brake is applied. A solenoid-operated blocking member is positioned to selectively block movement of a detent pin to prevent the shift lever from leaving the park position of the shift gate. A circuit including switches responsive to ignition, service brake application and shift lever position controls solenoid activation. A cam responsive to the shift lever release button and to the lever position controls the shift lever position switch.
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