US Patent 7845719 Adjustable height hook on high chair

A hook on high chair that includes a base unit that engages the lip of a table top and a seat unit that engages a seat for a child. The base unit and seat unit slide relative to each other such that the seat of the seat unit is adjustable in height so as to customize the hook on high chair for relatively small children such as infants or relatively large children such as toddlers. The base unit includes a J-shaped lower tube that includes a turn knob and an upper tube that includes a resilient foot for opposing the turn knob. The lower and upper tubes are fixed via a joint. The seat unit includes a vertically extending tube slideably adjustable in the joint via a spring biased pin. The seat unit includes a cantilevered portion that carries the seat.