Patent ID: 6749549
Filing Date: 2004-06-15
Classification: A63B,Y10S

Abstract:
A quickly collapsible and erectable horizontal and parallel bars combination, comprising two upright assemblies, two U-shaped tubular bases, two side supports, and a top bar;each of said two upright assemblies being a modularized structure and including an upper and a lower crossbar, two upright posts, a U-shaped handgrip, a framed foot member, and a plurality of supporting posts; said upper and lower crossbars being fixedly and transversely connected to and extended between predetermined positions on said two upright posts to form a frame, said U-shaped handgrip being pivotally connected at two ends to two outer ends of said upper crossbar, said framed foot member being pivotally connected at two predetermined positions to two outer ends of said lower crossbar for a first and a second part of said framed foot member to separately locate at two opposite sides of said lower crossbar, and said upright posts being spaced from one another by a predetermined distance to vertically extend between and thereby indirectly connect said handgrip to said first part of said framed foot member; each of said two side supports having lower ends detachably inserted into upper receiving sleeves at upper ends of said two upright posts of each said upright assembly to form a vertical framework; said top bar being transversely and detachably connected to and supported on two upper ends of said two side supports; and said two U-shaped tubular bases being separately detachably connected to front and rear sides of said two upright assemblies to provide said vertical frameworks formed from said upright assemblies and said side supports with a horizontal supporting strength; each of said upright assemblies being collapsible into a flat state to have a largely reduce volume simply by pivotally upward turning said handgrip and said framed foot member about said upper and said lower crossbar, respectively; and said whole horizontal and parallel bars combination being collapsible to occupy a largely reduced space for advantageous packing and storage simply by detaching said top bar, said side supports, and said U-shaped tubular bases from said upright assemblies before collapsing said upright assemblies.