US Patent 10330347 Positioning foot block

A positioning foot block for the mounting of an upright bar is disclosed to include a support device having a bottom wall, two side walls respectively extended from opposing left and right sides of the bottom wall and a positioning space surrounded by the bottom wall and the side walls for receiving the upright bar. Each side wall of the support device has two side lugs respectively extended from opposing front and rear sides thereof toward the positioning space and respectively clamped on respective corner ends of the upright bar. Thus, the structural design of the positioning foot block can clamp the corner ends of the upright bar firmly, prohibiting the upright bar from vibration and enhancing its positioning stability.