US Patent 8191815 Auto-reversible reel

An auto-reversible reel includes a wheel-shaped housing, a rotor rotatably mounted in the housing, a pull rope fastened to and winding round the rotor, a control member fastened to one end of the pull rope outside the housing and operable to pull the pull rope out of the housing, and a power spring adapted for reversing the rotor to take up the pull rope. The rotor has a retaining block located on the inside wall thereof and a stop plate extending over the retaining block. The power spring has a retaining hole located on the outer end thereof and fastened to the retaining block of the rotor in such a manner that the stop plate prohibits disconnection of the outer end of the power spring from the retaining block.