Patent ID: 6398679
Filing Date: 2002-06-04
Classification: F16H,Y10S,Y10T

Abstract:
A continuously variable transmission comprising a first shaft supporting two first pulleys, said two first pulleys each comprising a fixed disk portion and a moveable disk portion whereby axial movement of said moveable disk portions along said first shaft relative to said fixed disk portions changes an effective diameter of said two first pulleys, said moveable disk portions of said two first pulleys being interposed along said first shaft between said fixed disk portions of said two first pulleys, a synchronizing member connecting said moveable disk portions such that the effective diameters of said two first pulleys are maintained substantially equal by said synchronizing member, at least a portion of each of said moveable disk portions being axially moveable between said first shaft and at least a portion of each corresponding fixed disk portion of said fixed disk portions, said at least a portion of each of said moveable disk portions being dynamically keyed to said first shaft using a plurality of balls positioned within a substantially cylindrical race formed between said moveable disk portions and said first shaft.