Ricardo UK Limited

Pierre Marc Guern

Jonathan Charles Wheals

A rotary mechanism for incrementally advancing a rotary element () with respect to a ground member () comprises a unidirectional clutch () and a rotary actuator (). Actuation of the actuator is against a resilient bias (), and overcomes friction between the rotary element and the ground member to advance the rotary element with the unidirectional clutch locked. Release of the actuator allows re-setting thereof by the resilient bias, the friction between the rotary element and the ground member resisting further relative movement.

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Warwickshire, United Kingdom

Pierre Marc Guern