Linear actuator
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United States of America Patent
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Jun 5, 2018
Issued Date -
Jan 21, 2016
app pub date -
Jul 13, 2015
filing date -
Jul 15, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A linear actuator includes: a pinion shaft coaxially coupled to a motor shaft; a driven gear that is engaged with a pinion gear on the pinion shaft; a nut that rotates with the driven gear; a feed screw mechanism that converts rotation movement of the nut into linear movement of a rod; a coupling part allowing an outer peripheral surface of the motor shaft to be serration coupled to an inner peripheral surface of a vertical hole in the pinion shaft; and a pressurizing unit that generates a pressure that axially acts between e motor shaft and the pinion shaft in the coupling part.
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