Importance

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Abstract

A rotary drive member includes a longitudinal axis defining a length direction, a curved cam contact surface forming a closed contour around the longitudinal axis and extending in the length direction and a reciprocating member having a carrier movable in the length direction. At least one cam follower wheel is rotatably mounted on the carrier via a cam follower axis that extends in a direction transverse to the length direction. The wheel has a wheel contact surface engaging with the cam contact surface for rolling along the cam contact surface and driving the cam contact surface in rotation around the longitudinal axis. The cam follower axis is oriented at an angle α with respect to the transverse direction for removing play between the wheels and the cam surface and preventing of jamming. In the event of axial loads on the rollers, no radial forces will be induced on the carrier.

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First Claim