Lucas Industries Limited

Lucas Industries Public Limited Company

David S Mitchell

Steven J Willacy

An actuator apparatus comprising an actuator member, an actuated element movable by actuation of said actuator member, and a marker device including a marker the position of which can be sensed in use by sensor means, said marker device being secured to said actuator member such that deformation of the actuator member during actuation to move said element causes an adjustment to the change in position of the marker.

Actuator apparatus including a marker device

Thermal expansion within a gearbox causes relative motion of all of the component parts therein. For gearboxes having components made of different materials, differential thermal expansion may alter the clearances between meshing gears and give rise to increased backlash. The gearbox comprises a compensation member arranged to move one end of an axle having a first gear therein in response to changes to temperature so as maintain the first gear in substantially temperature invariant engagement with a second gear.

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Market Drayton, United Kingdom

David S Mitchell