Patent ID: 6141828
Filing Date: 2000-11-07
Classification: A45C,Y10T

Abstract:
A retractable pull-handle system comprising:a pair of inner tubes,a pair of parallely positioned and spaced-apart support tubes, each of said support tubes comprises an open upper end and an interior cavity adapted for accepting an inner tube to slide freely therein when said inner tube is not locked to said support tube,a pull handle connected to upper ends of said pair of inner tubes, anda locking means comprises:an aperture provided in said support tube for receiving a locking pin, anda locking mechanism fixedly positioned in each of said inner tubes comprising a housing member having an open front and a vertical slot, said vertical slot being equipped with an open top and a horizontal slot near its center; a vertical sliding member for sliding in said vertical slot, a center portion of said vertical sliding member being equipped with a slanted rib section adapted for engaging a horizontal sliding member; and the horizontal sliding member for sliding in said horizontal slot equipped with a locking pin on a surface facing said open front of the housing member and a slanted slot having inclined surfaces for intimately engaging said slanted rib section on said vertical sliding member such that a vertical motion of said vertical sliding block is transformed into a horizontal motion of said horizontal sliding block for penetrating or retracting said locking pin into or from said aperture situated in said support tube and thus locking or unlocking said pull-handle system.