Patent ID: 6955620

Claim:
In an infinitely variable ratio transmission having a first variable diameter pulley torque input member and a second variable diameter pulley output member, wherein said second variable diameter pulley is oriented with respect to said first variable diameter pulley such that the axis of rotation of said second variable diameter pulley is parallel to the axis of rotation of said first variable diameter pulley wherein torque is transmitted from said first variable diameter pulley to said second variable diameter pulley by an endless, inextensible belt, the improvement comprising: a) a multiplicity of radially extending channels circumferentially spaced over conical surfaces of said variable diameter pulleys, b) a sprocket bar positioned in each of said radially extending channels for engaging said inextensible belt, wherein said sprocket bars are free to move both normal to said pulley's surface and circumferentially within each of said channels, c) resilient means positioned between said sprocket bars and their associated channel bottom whereby said sprocket bars are biased outward toward said pulley's conical surface.