Drive for pedal cycle - has cam controlling crank arms via rollers to remove dead points in force application

摘要

The drive for a pedal cycle has a cam mounted rotatably on ball bearings which can move toward the front on guides. The cam is mounted via rollers which are diametrically opposed and each connected to a slide on a crank arm. The assembly is fixed to the frame by a mounting with a stop and has two rods which carry the roller slides.