NASA NTRS · 19900000668
Rotary Ball Locking Mechanism
Abstract
Ball locking mechanism links input drive shaft to output shaft and disengages two shafts from each other when it locks output shaft at either of two fixed angular positions. Part of drive system turning microwave antenna 143.5 degrees between stowage and employment orientations and holds it at either orientation without back-loading drive motor and gears. Angular interval and dimensions modified for use in robotic or other actuators in which desirable to "rest" drive trains while locking actuators at fixed positions.
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Holman, Earl V.. 1990-12-01. Rotary Ball Locking Mechanism. https://ntrs.nasa.gov/citations/19900000668
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