Stool or chair has support system comprising seat plate connected by vertical column to base plate, system being enclosed in plastic foam, section below base plate being compressed when seat is rocked and producing restoring force

摘要

The stool or chair has a support system comprising a seat plate (3) connected by a vertical column (4) to a base plate (5). The whole system is enclosed in plastic foam (10), the section (6) below the base plate being compressed when the seat is rocked and producing a restoring force.