Power release actuator
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United States of America Patent
Stats
-
Aug 28, 2007
Grant Date -
Aug 25, 2005
app pub date -
Jun 22, 2004
filing date -
Jun 24, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method as disclosed for operating a motor bidirectionally to cinch and release a closure panel of a motor vehicle. The motor is operatively connected to a pawl, ratchet and spring of a latch for the closure panel. The method includes the step of driving the motor in a cinching direction to rotate the ratchet to cinch the closure panel in the closed position. The motor is then returned to a park position by driving the motor in a park direction opposite to the cinching direction. Power is applied to the motor to drive the motor in a release direction to drive the motor past the park position with respect to the cinching direction. In doing so, the motor contracts the spring as it moves in the release direction. Power is then removed from the motor allowing the spring to force the motor to return to the park position as the spring returns to its steady state position.
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