Patent ID: 7850239
Filing Date: 2010-12-14
Classification: A61G,Y10S

Abstract:
1. A chair comprising: an identical pair of elongated parallelepiped back frames, each back frame having a vertically extending upper portion and a rearwardly extending lower portion, the lower portion having a lower edge; a parallelepiped connection member extending perpendicularly between and connecting the back frames; an identical pair of parallelepiped front legs in parallel position to each other, each front leg having an upper end, a lower end, a rear edge, a front edge, an inside edge, and an outside edge; a parallelepiped crossbar extending between and connecting the inside edges of the front legs, wherein the crossbar is parallel to the connection member; a pair of identical parallelepiped parallel seat base members having a top edge, each seat base member having a first edge perpendicularly affixed to and extending forwardly from a back frame and an opposite second edge affixed to a front leg rear edge; a parallelepiped connecting member having an upper edge, the connecting member affixed to and extending between the seat base members and further affixed to each of the back frames lower portion; a parallelepiped seat affixed to each of the back frames at a juncture of the upper portion and lower portion, to the top edge of each seat base member, the upper end of each front leg, and the upper edge of the connecting member, the seat having a top portion parallel to the crossbar; a torsion spring assembly comprising: a parallelepiped upper mount member having a front side and a top side affixed to the lower edge of the back frame lower portion; a parallelepiped lower mount member having the same dimensions as and parallel to the upper mount member, the lower mount member having a forward edge and a bottom edge; a securement means to secure the upper mount member to the lower edge of the back frame lower portion; a torsion spring having a first end, a second end, and a single coil therebetween, wherein the first end is movably connected to the upper mount member front side and a second end is movably connected to the lower mount member forward edge via the coil; wherein the torsion spring is selectively positioned into a compressed state and an uncompressed state whereby the seat is selectively tilted downwardly and forwardly; and further wherein the seat is parallel to a floor surface only when the torsion spring is in the compressed state.