Patent ID: 6364774
Filing Date: 2002-04-02
Classification: F16D,F16F,F16H,Y10T

Abstract:
A power transmission mechanism for connecting a first rotor to a second rotor, wherein the second rotor is coaxial to and driven by the first rotor, and the second rotor is fixed to a rotating member, such that the rotating member is driven by the first rotor, the mechanism comprising:a spiral spring for connecting the first rotor to the second rotor, wherein the spiral spring includes: a center section fixed to the second rotor; and a plurality of arms, each of which extends from the center section towards the first rotor in a spiral manner, and each of which has an inner end and an outer end, wherein the inner ends are attached to the center section and the outer ends are attached to the first rotor, wherein the spiral spring is axially compressed.