Patent ID: 8668614

Claim:
A method of transferring rotational mechanical energy between a shaft and a ring gear comprising: obtaining a shaft having a shaft traction surface; obtaining rollers having inner roller sloped surfaces and outer roller traction surfaces; connecting traction rings to opposite sides of said ring gear, said traction rings having sloped ring surfaces that mate with said inner roller sloped surfaces of said rollers; coupling planet gears to said rollers, said planet gears disposed to engage an inner gear mesh on said ring gear so that rotational mechanical energy is transferred between said rollers and said ring gears through said planet gears; forcing said rollers towards said traction rings to create a force against said inner roller sloped surfaces of said rollers and said sloped ring surfaces of said traction rings that creates a sloped pressure interface, forcing said rollers towards said shaft, which forces said outer roller traction surfaces of said rollers against said shaft traction surface of said shaft, to create pressure on a shaft traction interface that is created between said shaft traction surface of said shaft and said outer roller traction surface of said rollers, that increases friction in said shaft traction interface, which causes said rotational mechanical energy to be transferred between said shaft and said rollers.