Devices for converting rotary movement into linear movement
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United States of America Patent
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-
Jan 12, 1988
Grant Date -
N/A
app pub date -
May 25, 1983
filing date -
May 28, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device is composed of relatively rotatable cylindrical components one of which has a groove forming a raceway or track of part-helical form containing a set of balls in contact with a plain surface of the other component. The raceway wedges with the balls to resist direct axial motion between the components. Rotation of one component causes the balls to move around the raceway and be guided from the end to the start thereof under sufficient traction to cause linear motion of the other component.
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