Abstract: Variably adjustable chair (100) having adjustable arms for optimal positioning by a user to attain greater comfort and operation with reduced stresses and tensions. Each adjustable arm assembly (198) and (199) includes keyboard supports (195) and (196) and auxiliary supports (145) and (146). Keyboard supports are for use with keyboard sections. Right and left keyboard sections (200) and (300) are divided for independent right- and left-hand actuation. More specifically, a standard computer keyboard, QWERTY keyboard layout, with a numeric data pad, is divided at an optimum location for normal left-and right-hand usage. Each keyboard section includes keys which are optimally positioned for natural orientation actuation by an operator's thumb. Wherein, each adjustable arm assembly and each keyboard section is ergonomically designed for an operator's natural arm-hand-wrist contours for optimal use and comfort with reduced stresses and tensions.

Abstract: Support tables suitable for supporting a computer keyboard in front of a user and adapted for rotatable attachment to the side arms of a chair are provided. Each support table is hingedly attached to the front of each side arm so as to be pivotable about each of two orthogonal axes. The support tables are foldable from a generally horizontal position disposed above the seat of the chair and in front of the chair side arms and the user to a stored position disposed adjacent the outside sides the chair and side arms when the support tables are not in use.