Patent ID: 6604792
Filing Date: 2003-08-12
Classification: A47C

Abstract:
A seat assembly, comprising:a chair frame with spaced supports for holding a diaphragm to said frame, said diaphragm having one edge connected to one of said spaced supports of said chair frame, and an opposite edge of said diaphragm adjacent to another of said spaced supports of said chair frame; and an over center linkage for releasably coupling said opposite edge of said diaphragm to said another of said spaced supports of said chair frame for stretching said diaphragm between said spaced supports of said chair frame, said over center linkage including a pin coupled with said another of said spaced supports for pivotal movement, and a lever arm having a pivot end coupled to said pin for pivotally opening and dosing said over center linkage, and said lever arm having a free end for coupling to said diaphragm, wherein said lever arm moves between a closed position for stretching said diaphragm, and an open position for releasing said diaphragm, wherein said diaphragm is held in the stretched position by mechanical forces.