Patent ID: 7794346

Claim:
A torque transfer device, comprising: a support structure; a first rotating member having an input shaft concentric with said first rotating member, wherein said first rotating member is rotatably attached to said support structure via said input shaft; a drive unit rotationally coupled to said input shaft opposite said first rotating member along said input shaft for transferring a first rotational force to said input shaft; a second rotating member having an output shaft concentric with said second rotating member, wherein said second rotating member is rotatably attached to said support structure via said output shaft; a receiving unit rotationally coupled to said output shaft opposite said second rotating member along said output shaft for receiving a second rotational force of said output shaft; a connecting arm directly attached to said first rotating member at a first attachment point of and said second rotating member at a second attachment point; wherein said first attachment point is offset from a first rotational axis of said input shaft of said first rotating member and wherein said second attachment point is offset from a second rotational axis of said output shaft of said second rotating member; and a third rotating member rotatably coupled to said first rotating member via an elongated member, wherein said third rotating member is rotatably connected to said support structure; wherein said elongated member is comprised of a chain; wherein said third rotating member is connected to said connecting arm, wherein said connecting arm is comprised of a rigid and straight structure.