Rotary actuator with tailored torque output

Details Rotary actuator with tailored torque output Rotary actuator with tailored torque output

1988-06-20

1989-01-17

Ostrager, Allen M.

Power plants

Motor operated by expansion and/or contraction of a unit of...

Mass is a solid

60529, F03G 706

Patent

active

047980516

ABSTRACT:
A rotary actuator with tailored torque output comprises a shape memory alloy rod or tube encased within or filled with a burnable chemical grain. In its initial state, the rod or tube has zero degree rotation about its longitudinal axis. The rod or tube is then rotated or twisted about its longitudinal axis when the shape memory alloy is in a malleable state. The rod or tube may be progressively, selectively heated by the burning of the chemical grain to cause the shape memory alloy to return locally to its original shape with the consequence that a free end of the rod or tube is rotated.

REFERENCES:
patent: 3381469 (1968-05-01), Schwartz

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