Patent ID: 6390945
Filing Date: 2002-05-21
Classification: F16H

Abstract:
A friction gearing transmission, comprising:driving and driven means; a friction gearing planetary; said planetary includes a rotatable ring, a rotatable sun wheel and at least two rotatable planet wheels, a support for said sun wheel, and a support for said planet wheels; a disc interposed between the sun wheel and a first planet wheel of said at least two planet wheels; said disc being rotatably mounted about an axis transverse to the axes of the sun wheel and the at least two planet wheels, and in friction contact with said sun wheel and said first planet wheel; means to cause normal forces to exist between adjacent rotatable members of said planetary and of said disc; and, whereby, power may be transmitted in either direction between the ring and the disc, and in either direction of rotation, at a ratio substantially determined by the size of the ring and the position of the disc.