CPC F16H 25/20 (2013.01) [A63G 31/02 (2013.01); A63J 25/00 (2013.01); F16H 2025/2031 (2013.01); F16H 2025/2075 (2013.01)] | 16 Claims |
1. A linear actuator comprising:
a motor for producing a bi-directional rotational output;
a casing connected to the motor at a proximal end, the casing having an inner cavity defining a joint surface;
a shaft within the inner cavity of the casing and actuated by the motor for rotation;
a sliding tube at least partially in the inner cavity of the casing for moving in translation in an axial direction relative to the casing;
at least one travelling member connected to the sliding tube assembly for moving with the sliding tube in the axial direction, the travelling member being operatively engaged to the shaft for converting a rotational motion of the shaft into a translation of the sliding tube; and
a liner between the sliding tube and the joint surface of the inner cavity, an inner surface of the liner defining longitudinal contact surfaces separated by longitudinal grooves, the longitudinal contact surfaces contacting the sliding tube.
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