Shock/brake unit
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United States of America Patent
Stats
-
Oct 30, 1984
Grant Date -
N/A
app pub date -
Jun 24, 1982
filing date -
Jun 24, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A ball screw brake and stop assembly having an elastomeric compression pad or elastomer member circumferentially surrounding the ball screw and received in a counter bore of a non-rotating assembly having a bore receiving the ball screw with the pad confined on its outer diameter and at one axial end. A striker member, dimensioned to be receivable within an open axial end of the counter bore, functions as a stop member limiting axial movement of the ball nut. Upon projection of the striker member into the counter bore, further movement of the ball nut causes axial compression of the elastomer member providing resistance to further axial movement of the ball nut. At the same time, radial expansion of the elastomer member, caused by compression in the axial direction, causes the inner diameter of the elastomer member to frictionally engage the outer diameter of the ball screw to break rotation of the ball screw.
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