Nut for ball screw
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United States of America Patent
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Apr 7, 2015
Grant Date -
Jun 13, 2013
app pub date -
Sep 13, 2012
filing date -
Dec 7, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A nut for a ball screw mainly includes a nut, multiple dual-narrowed paths, multiple micro fans, a control portion, and multiple temperature sensing portions. The nut has a threaded path and the dual-narrowed paths are defined through the central axis of the nut and substantially parallel to the threaded path. Each of the dual-narrowed paths has a high-speed area and the diameter of each of the dual-narrowed paths is gradually reduced from two ends toward the high-speed area. The nut has micro fans which drive the air flows and reduce the temperature to increase the life of use and the precision of positioning.
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