Patent ID: 6193314
Filing Date: 2001-02-27
Classification: A47C

Abstract:
A chair comprising:a backrest including a plurality of pairs of vertically spaced positioning grooves defined therein,a chair seat,a connecting means including a first end for engaging with the backrest and a second end for securely engaging with the chair seat, the first end of the connecting means including a compartment, an inner wall defining the compartment including a slot with two spaced horizontal sections,two slider members each including a locking member for releasably engaging with an associated said positioning groove of the backrest and a sliding rod slidably received in an associated said horizontal section of the slot in the connecting means,an actuator mounted in the compartment of the connecting means and slidable in a vertical direction, the actuator including two inclined faces, said sliding rod of each said slider member abutting against an associated said inclined face such that vertical movement of the actuator causes horizontal movements of the slider members along the slot,an elastic member attached between the sliding rods for biasing the locking members of the slider members to securely engage with an associated said pair of the positioning grooves, thereby retaining the backrest in a desired level relative to the chair seat, anda manually operable adjusting button securely attached to the actuator for urging the actuator to move in the vertical direction, such that the sliding rods of the slider members move away from each other to disengage the locking members of the slider members from the associated said pair of the positioning groove, thereby allowing the backrest to be movable in the vertical direction relative to the chair seat.