Abstract: A chair has side units including support members 7, 8 articulated to arm rests 9, 10, respectively pivotally mounted at their distal ends to a horizontal rod 11 disposed below a seat 1 and to a back rest 3. The ends of the support members are bent at an angle of 70.degree. to 90.degree., and the units can be moved between raised and collapsed positions.

Abstract: The armrests and base feet of a chair are encased by a soft cushioning layer of foamed plastic, such as polyurethane, to provide bumping and impact protection and to enable the structural support members of the chair to be fabricated from rough and unfinished metal stock.

Abstract: The seat 10 of a chair consists of a four piece frame 20-23, with inserts 24-27 in the corners each consisting of a tube piece cut in half lengthwise. A nut 29 is attached to each insert. A mesh grid 28 is mounted between the shanks of the frame. The entire seat with the desired contours is formed from molded polyurethane foam which pads all hard parts. The backrest 12 comprises a bent core tube 44 on which nuts 43 are attached, and given the desired shape by molded polyurethane foam. The columnar legs 11 each have an axially extending upper screw 33 which screws into the nuts 43 on the backrest tube. The legs are fastened to the seat by screws 34 extending diametrically through the legs.