Cambridge Mechatronics Limited

René Kist

James Robert Howarth

Andrew Benjamin Simpson Brown

Stephen Matthew Bunting

Alexander Doust

An SMA actuator assembly () for driving or rotating a movable part () in a predetermined direction or sense by a plurality of repeated incremental steps is provided. The SMA actuator assembly comprises the movable part; a first engagement portion () for engaging the movable part; two SMA wires () arranged to move the first engagement portion such that the first engagement portion repeatedly, for each of said incremental steps, is configured to do the following: engage with the movable part from a starting position, exert a force or torque on the movable part in the predetermined direction and disengage from the movable part and return to the starting position. The exertion of the force or torque on the movable part and the engaging or disengaging with the movable part are caused by contraction or relaxation of the two SMA wires.

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Cambridge, United Kingdom

René Kist