OFFSET PRELOAD BALL SCREW WITH EXPANDABLE LOADING AREA
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United States of America Patent
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Issued Date -
Mar 3, 2016
app pub date -
Aug 26, 2014
filing date -
Aug 26, 2014
priority date (Note) -
Abandoned
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Abstract
An offset preload ball screw with expandable loading area includes: a screw, a nut, and a plurality of balls between the screw and the nut. The inner helical groove of the nut includes at least a first section, a second section and a third section which are continuously connected one another. The preload constantly and smoothly changes in the second section, and the balls can be subjected to loads in positive or negative direction in the second section. Therefore, the running smoothness, precision and load capacity of the ball screw of the present invention is enhanced.
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