Adjustable chair

Details Adjustable chair Adjustable chair

A - Human Necessities

47

C

155/49

A47C 7/14 (2006.01) A47C 1/024 (2006.01) A47C 3/02 (2006.01)

Patent

CA 1242379

ADJUSTABLE CHAIR Abstract Of The Invention An adjustable chair (10) includes a seat portion (12) having a convex undersurface (22) and a base portion (14) having a concave upper surface (20). Low profile roller assemblies (28, 30) are fixed in a spaced apart relation along the convex undersurface (22). Tracks (24, 26) are affixed along the concave upper surface (20) of the base portion (14). The roller assemblies (28, 30) are adapted for rolling contact with the tracks (24, 26). A power transmission assembly (62, 66, 68, 70) has a first end which is pivotably coupled to the seat portion (12) and has a second end which pivotably connects to the base portion (14). The power transmission assembly (62, 66, 68, 70) moves the seat portion (12) along an arcuate path defined by the base portion (14). A noise dampening pre- load spring (74) is associated with the second end of the power transmission assembly (62, 66, 68, 70).

511380

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