Patent ID: 6315362
Filing Date: 2001-11-13
Classification: A47C

Abstract:
An adjustment mechanism mounted in a chair for releasably locking one chair component in any one of a plurality of positions relative to a seat of said chair, said adjustment mechanism comprising:a tube-like brace having one end secured to underside of said seat;a sliding member slideable in said brace having an upper end secured to one chair component, a lower opening, and a plurality of longitudinally disposed recesses;a guide member coupled to said lower opening of said sliding member;a hook member having a lower end coupled to said guide member and an upper bent end;a first half-cylindrical member secured in said brace including an internal notched member having a plurality of curved members each including a first curve, a stop, and a second curve, and a longitudinal channel in communication with said curved members; anda second half-cylindrical member secured in said brace matingly snapped with said first half-cylindrical member for receiving said sliding member and said hook member, said second half-cylindrical member including a lower hole, a spring-loaded detent having a portion projected from said lower hole into one of said recesses for engaging with said sliding member and other remaining portions concealed in said lower hole in an unused state of said adjustment mechanism, and a fastener secured in said lower hole to compress said spring-loaded detent;wherein one chair component is operative to push down to cause said bent end to move through said channel in response to a disengagement of said detent from said recess and pull up to lock in one of said curved members with said detent engaged with one of said recesses.