Invalid's chair construction

摘要

Invalid's chair has a support frame which includes a main support section, a seat support section pivotable on the main frame section and a back frame section, pivotable on the seat support section of the frame. The chair includes a seat cushion mounted on the seat frame and lower and upper back support cushions carried by the back frame and being independently adjustable relative one another. The seat and back frame sections are tiltable on the main frame together and the back frame is also tiltable independently of the seat frame. A tilting control cylinder is disposed between the back support section of the frame and the seat section and another tilt control cylinder is disposed between the seat section and the main support section to enable tilting of the back and seat portions of the chair together and independent tilting the back portion. The back support frame section and seat frame section are each pivotable about pins which are disposed substantially forward of the back edge of the seat cushion. The chair also includes body support pads disposed on the back support frame and each is disposed on a universal mounting fixture having three degrees of movement operable by a single knob. The seat cushion of the chair includes a contour control mechanism for selectively varying its contour. All of the control mechanisms and the operation of the component parts of the chair are disposed on the chair frame to be accessible from a position directly behind the chair.