US Patent 6862776 Positioning structure of a retractable handle

The present invention disclose the positioning structure of a handle comprising a base possessing an axial hole and two hollow spaces mounts on the inner tube; two movable pieces with slanting cambered face provided screw teeth thereon mounts in each of the hollow spaces of the base; a rotating ring mounts on the outer tube; a rotating cone has an axial multilateral hole mounting in the hole of the base and between the two movable pieces, and cone face of the rotating cone provided screw teeth to bite the screw teeth of the movable pieces; and a rotating rod passing through the axial hole of the rotating cone, and one end of the rotating rod is fixed on the rotating ring, so that when rotating the rotating ring can control the retract of the handle.