Patent ID: 6033026
Filing Date: 2000-03-07
Classification: A47C

Abstract:
A chair frame assembly comprising:a first lateral frame formed with a plurality of first mounting holes;a second lateral frame formed with a plurality of second mounting holes aligned respectively with said first mounting holes; anda plurality of linking units extending between said first and second lateral frames, each of said linking units including;a tubular positioning sleeve mounted securely on said first lateral frame, said positioning sleeve having an open first end disposed adjacent to a respective one of said first mounting holes, an open second end distal to said first lateral frame, and an axis aligned with an axis of the respective one of said first mounting holes;a connecting rod extending into and mounted non-rotatably on said positioning sleeve, said connecting rod having a first section which is proximate to said first lateral frame and which is formed with an internally threaded fastening hole aligned with the respective one of said first mounting holes, and an externally threaded second section distal to said first lateral frame;a first screw bolt extending through the respective one of said first mounting holes and into said positioning sleeve, and engaging threadedly said internally threaded fastening hole in said first section of said connection rod for fastening said connecting rod to said first lateral frame;a linking rod having a first end which extends into said positioning sleeve and which is formed with an internally threaded first engaging hole that engages threadedly said second section of said connection rod, and a second end which extends to said second lateral frame and which is formed with an internally threaded second engaging hole aligned with a corresponding one of said second mounting holes; anda second screw bolt extending rotatably through the corresponding one of said second mounting holes in said second lateral frame and engaging threadedly said second engaging hole of said linking rod for mounting said second end of said linking rod rotatably on said second lateral frame;axial rotation of said linking rod resulting in linear movement of said linking rod with respect to said connecting rod so as to permit adjustment of a distance between said first and second lateral frames.