A chair with a firm structure for overlapping has a body which includes a chair frame and at least one supporting frame; the chair frame having a base, a seat frame and a back frame for supporting the body; the supporting frame being at an outer side of the chair frame; wherein the seat frame has a seat;...http://www.google.com.au/patents/US7396076?utm_source=gb-gplus-sharePatent US7396076 - Chair with firm structure for overlapping
