Patent ID: 6659560
Filing Date: 2003-12-09
Classification: A47C

Abstract:
An improvement for an office chair, comprising:a connecting element fixedly joined to a lower side of a seat of an office chair for detachably securing a back of the office chair and, a support plate extending from the back of the office chair, the support plate having a plurality of locating holes formed therethrough in longitudinally spaced relationship; the connecting element having a middle recess defined between a pair of side walls and a lateral wall spanning between the side walls, the connecting element having a pair of wing portions respectively extending from the pair of side walls for mounting the connecting element to the lower side of the seat of the office chair, each of the side walls having a plurality of integrally formed tab portions displaced therefrom into the middle recess to define retaining blocks, the plurality of retaining blocks of each side wall forming a channel on a corresponding side of the middle recess between a distal end of each retaining block and the lateral wall for slidably capturing the support plate therein; the connecting element having a locating pin fitted thereto, the locating pin having a control member affixed to a lower end thereof, the locating pin being biased by a spring to a locking position where an upper end thereof extends into the middle recess, and being displaceable against the spring bias to a disengaged position external to the middle recess responsive to the control member being pulled downwardly; whereby the locating pin is selectively engageable with one of the plurality of locating holes of the support plate to securely fix the back to the seat after the support plate is inserted in the channels and adjusted in position relative to the middle recess of the connecting element.