Patent ID: 6065803
Filing Date: 2000-05-23
Classification: A47C

Abstract:
A tilt control apparatus for use on a chair having a base and a backrest, the apparatus comprising:a center retainer including a pair of opposed axial ends and defining a longitudinal axis intersecting the ends;a torsion bar segment protruding from each axial end of the center retainer along the longitudinal axis and including a distal end remote from the center retainer;a tubular outer casing received over each torsion bar segment and affixed to the center retainer;an end bar retainer received on the distal end of each torsion bar segment for rotation therewith; anda means for restricting axial and rotational movement of the end retainers relative to the outer casings,wherein the center retainer and outer casings are adapted for securement together to one of the base and backrest, and the end retainers are adapted for securement to the other of the base and backrest such that the backrest can be tilted relative to the base between an upright position and a tilted position, the torsion bar segments biasing the end retainers in a direction adapted to return the backrest to the upright position.