A rotation device includes an output shaft, at least one rotatable rotary plate member arranged so that its rotation axis and the output shaft are coaxial, at least one weight member fixed to the rotary plate member, for biasing position of the center of gravity from the rotation axis of the rotary plate member, and at least one clutch mechanism arranged between the rotary plate member and the output shaft, for separating the rotary plate member and the output shaft with each other at a predetermined rotation angle. The clutch mechanism connects the rotary plate member with the output shaft when the center of gravity of the weight member descends, and separates the rotary plate member from the output shaft when the center of gravity of the weight member rises.

A gear system for achieving an infinitely variable transmission comprising an input shaft for receiving rotational input into the transmission system and output shaft for delivering rotational output from the transmission system, a flywheel component for applying resistive forces of inertia into the transmission wherein the flywheel stores and stabilizes rotational energy in the transmission system, a high gear reduction mechanism achieved by assembly of one or more epicyclic gears wherein the flywheel accelerates with increasing difference of angular velocity between the input shaft and the output shaft, wherein the high gear reduction mechanism is based on the equation. (a)Z=(n+a)R(n)X, where Z is angular velocity of flywheel, X is angular velocity of input shaft and R is angular velocity of output shaft, n & a are integer constants where a<<n or a<n. The gear ratios vary from 0 to 1, wherein another gear can be meshed with the output shaft to achieve overdrive gear ratios.

A planetary gear type throwing wheel device contains: a central shaft rotatably locked on two rotatable discs, and a transmission gear locked on the central shaft. Each rotatable disc includes three supports and three columns rotatably connect with three throwing force gears. The transmission gear drives the three throwing force gears to rotate. Each throwing force gear includes a defining portion, and multiple counterweight elements are disposed on the defining portion. A generator rotation wheel is fixed on a top rotatable disc, an actuation shaft is connected with the central shaft, and the actuation shaft has a driving wheel, such that the driving wheel drives the transmission gear to rotate the three throwing force gears simultaneously so that the six counterweight elements produce a throwing force, and a large torque is generated from the central shaft to rotate the generator rotation wheel.