US Patent 10507146 Sitting to standing lift chair

The sitting to standing lift chair is useful for the elderly and physically impaired when transitioning from a sitting position to a standing position, or vice versa. The chair includes a seat bottom, a seat back rotatably attached to the rear edge of the seat bottom, armrests attached to side edges of the seat back, hand grips on the armrests, a headrest and a footrest rotatably attached to the front edge of the seat bottom. A base and a bottom elevated platform support the other chair components and provide an adjustable height for the chair. The seat bottom is supported on the bottom elevated platform using a sitting to standing mechanism, which provides for raising and lowering the seat bottom while keeping the seat back vertical. Three control switches operate motors for controlling the height of the chair, the position of the footrest and the sitting to standing mechanism.