Spherical joint with internal brake
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United States of America Patent
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-
Dec 17, 2013
Grant Date -
Mar 29, 2012
app pub date -
Nov 30, 2011
filing date -
Jun 9, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The spherical joint with internal brake has a controlled actuator that selectively brakes relative motion between interior members and an outer shell of the spherical ball joint. A shaft extending from the internal members can be stopped at any rotational position relative to the shell. The internal members may include a central spherical sectioned member sandwiched by a pair of symmetrically opposed peripheral spherical sectioned members, which selectively act as brakes when an actuator in the central member is energized. The energized actuator has a dual piston that pushes outwardly on the pair of opposed peripheral segments, which increases friction between the peripheral segments and an interior wall of the spherical shell to brake the system. The shaft extends from the central spherical sectioned member through an aperture in the shell. The size of the shell aperture determines the range of rotational motion of the shaft.
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