Electro-mechanical actuator
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United States of America Patent
Stats
-
Nov 28, 2006
Grant Date -
Apr 7, 2005
app pub date -
Nov 23, 2004
filing date -
Jan 19, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electro-mechanical actuator for a window lift mechanism including a plurality of motors for driving an output shaft. The actuator may be incorporated into a window lift mechanism including a dual rack and pinion assembly, for driving the pinions along the racks. According to another aspect of the invention there is provided a variety of anti-back-drive mechanisms, e.g. clutches. A clutch according to one embodiment includes locking pawls that resist back-drive. In another embodiment, locking cams rotate relative to a carrier to resist back-drive. An actuator consistent with the invention may incorporate an impact mechanism including a flexible carrier. The carrier flexes to prevent impact forces at an output gear train from coupling to an input gear train.
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