Patent ID: 7722490

Claim:
A transmission comprising: a) first and second positive engagement belts; b) first and second transmission pulleys each comprising of a plurality of teeth and an axis of rotation, wherein said first and second transmission pulleys rotate about a common axis of rotation; and wherein said first transmission pulley engages with said first positive engagement belt and wherein said second transmission pulley engages with said second positive engagement belt; c) first and second cones, wherein each said first and second cones consists of: a smooth conical body having a large diameter end and a small diameter end, each said conical body rotates about an axis of rotation; a projection of the form of a single tooth projecting radially outwards from the outer surface of its said conical body and extending in a straight line from said larger diameter end to said smaller diameter end of its said conical body such that the axial alignment of each said tooth is parallel to said axis of rotation of its said conical body; wherein said tooth of said first cone engages said first positive engagement belt and said tooth of said second cone engages said second positive engagement belt; and wherein said first and second cones rotate about a common axis of rotation and said first and second cones are constrained from rotation relative to each other in a manner such that said tooth of said first cone is disposed substantially 180 degrees out of phase with said tooth of said second cone; d) first and second support pulleys; wherein said first support pulley engages said first positive engagement belt and is positioned to control the coverage of said first positive engagement belt on said first cone; and wherein said second support pulley engages said second positive engagement belt and is positioned to control the coverage of said second positive engagement belt on said second cone.