Screw actuator
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United States of America Patent
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N/A
Issued Date -
Apr 6, 2006
app pub date -
Oct 4, 2005
filing date -
Oct 6, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A screw actuator comprises a sleeve encircling part of an actuator shaft, one of the sleeve and the actuator shaft being rotatable, a drive arrangement for rotating the rotatable one of the sleeve and the actuator shaft, and a friction brake arrangement for applying a braking load to the said rotatable one of the sleeve and the shaft to resist rotation thereof, wherein the drive arrangement is adapted to adjust the axial position of the said rotatable one of the sleeve and the actuator shaft to disengage the friction brake arrangement when the said rotatable one of the sleeve and the actuator shaft is being rotated by the drive arrangement.
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