US Patent 10492611 Dual-purpose work chair

A dual-purpose work chair includes a base frame including a transverse portion, a longitudinal portion vertically located on the transverse portion and a plurality of rollers provided at the bottom side thereof, a first pivoting frame pivotally connected to the transverse portion and protruding beyond the base frame and biasable between a horizontal position and a vertical position, a lower seat cushion located on the first pivoting frame, a second pivoting frame pivotally connected to the longitudinal portion and biasable from a vertical position to a horizontal position across the first pivoting frame, and an upper seat cushion located on the second pivoting frame.