Gear 1 rotates about fixed axis A and meshes with planet gear 2 which, in turn, meshes with internal gear 4. Gear 4 rotates about axis A. Carrier 5 rotates about axis A and is connected by a turning pair to planet gear 2. Link 3 turns about fixed axis B and has curvilinear slot d and straight slot c. Roller b of gear 1 and roller a of planet gear 2 slide along slots d and c. When gear 1 rotates at uniform velocity, gear 4 has a complex nonuniform rotational motion, determined by the shape of curvilinear slot d.
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