Torque transmission belt means

Claim 1

A torque transmission belt extending between a drive pulley and a driven pulley and movable to transmit a driving force from said drive pulley to said driven pulley, comprising: a plurality of metallic strips superimposed on each other to form at least one ring; a series of blocks arranged along said ring and shiftably engaged therewith; said series of blocks being composed of two kinds of blocks alternately arranged along said strips; one kind of blocks being made of metal and having opposed side surfaces extending in the direction of movement of the belt, said surfaces including portions which are substantially parallel to one another and remaining portions which are inclined so as to contact surfaces of V-shaped grooves of said pulleys; the other kind of blocks being made of a non-metallic compression-resistant material which is lighter than that of said one kind blocks and having opposed side surfaces extending transversely of the direction of movement of the belt, said surfaces including portions which are inclined so that the distance therebetween is decreased toward the inside surface of said belt, said blocks having additional opposed side surfaces extending in the direction of movement which do not contact said surfaces of the V-shaped grooves of said pulleys.