Counterbalance assembly for rotatable robotic arm and the like
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United States of America Patent
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Jul 12, 1988
Grant Date -
N/A
app pub date -
Feb 11, 1987
filing date -
Feb 11, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A counterbalance assembly for use with a rotatable arm in a robotic manipulator, wherein such arm is rotated about a rotation axis. The assembly further includes one or more compression springs for providing resistance to compressive forces, and converting apparatus for translating the rotational movement of the rotatable arm about the rotation axis into linear deflection of such compression spring, whereby resistance of the compression spring to linear deflection in either direction along its longitudinal axis establishes an effective counterbalancing force which reduces the load bearing on the arm drive regardless of the direction in which the rotatable arm is rotated.
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