Patent ID: 8578999

Claim:
A clutch mechanism, comprising: a first reel rotatably disposed on a first shaft; a second reel rotatably disposed on a second shaft; a biasing element disposed between the first reel and the first shaft such that the first reel is movable in a radial direction relative to the first shaft between a first position and at least a second position and the biasing element biases the first reel into the first position; and a friction element, at least a portion of the friction element disposed between the first reel and the second reel and arranged to generate a first normal force when the first reel is in the first position and a second normal force when the first reel is in the second position wherein the biasing element comprises a hub rotatably disposed on the first shaft and a plurality of flexible fingers extending radially away from the hub, the flexible fingers having proximal ends connected to the hub and distal ends spaced away from the hub, wherein one or more of the distal ends contacts the first reel.