Bevel gear 1 rotates about fixed axis A and meshes with bevel planet gears 2 which are rigidly attached to bevel planet gears 4. Planet gears 2 and 4 are connected by turning pairs to carrier 6 which rotates about fixed axis B. Gears 2 mesh with fixed bevel sun gear 3; gears 4 mesh with bevel gear 5 which rotates about axis B. The speeds n₁ and n₅ of gears 1 and 5 (in rpm) are related by the equation n₅=-n₁(z₁/z₂)((z₂z₅+z₃z₄)/(z₁z₅+z₃z₅)) where z₁, z₂, z₃, z₄ and z₅ are the numbers of teeth of gears 1, 2, 3, 4 and 5. Gears 1 and 5 rotate in opposite directions.
$2886$CxG,PR$