Sliding displacement detecting apparatus
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United States of America Patent
Stats
-
Apr 15, 1986
Grant Date -
N/A
app pub date -
May 31, 1983
filing date -
May 31, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a disclosed displacement detecting apparatus, a nut member retains a plurality of balls to circulate therein while in engagement with a helical groove of a screw shaft. The nut member is unrotatable and linearly movable, and the screw shaft is rotatable and linearly immovable. A rotation detector and a brake are attached to the screw shaft. The nut member may act as a piston of a cylinder in which the nut member is mounted, or may be connected to a separately provided piston of the cylinder.
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