Patent ID: 6736346
Filing Date: 2004-05-18
Classification: B65H,H04M

Abstract:
An apparatus for winding a cord, comprising:a bobbin for storing cord, the bobbin having a bottom and a sidewall extending from the bottom, the bottom including an exterior surface; a plate which secures the bobbin and permits a biased rotation of the bobbin relative to the plate, the plate having a first surface facing the exterior surface of the bobbin, the first surface and the exterior surface forming channels which permit movement of a ball in accordance with the rotation of the bobbin; the channels including: an internal circular groove for guiding the ball in a direction along which the cord is wound when the bobbin is rotated to wind the cord; an external circular groove for guiding the ball in a direction along which the cord is released when the bobbin is rotated to release the cord; and a transition mechanism, which permits the ball to move between the internal circular groove and the external circular groove when the bobbin motion is changed.