Multi-directional body motion stack chair

Abstract

The present invention comprises a chair that allows small, subtle multi-directional motion by the user while maintaining the functionality and space requirements of a stack chair. The chair of the present invention comprises motion that is facilitated by flexible supports mounted to the frame of the chair which suspend and support the chair's seat. A range of motion in the seat is thereby provided which is limited by integrated stopping mechanism built into the chair's frame. Allowing the user to change seating attitude with concomitant motion of the chair seat improves user comfort and prevents or delays user fatigue during long seating sessions while maximizing efficiency of work accomplished during a seating session.

1 - 9 . (canceled) 
     
     
         10 . A stackable chair comprising:
 an upper section comprising:
 a seat having a seat base, the seat base comprising a lower side, and 
 an upper seat plate secured to the lower side of the seat base; 
   a lower section in operative connection with the upper section and comprising:
 a frame comprising chair legs and a lower base plate, wherein the chair legs are secured to the lower base plate; and 
   a plurality of shock absorbing elements interposed between the upper section and the lower section, wherein the upper section is suspended upon the shock absorbing elements.   
     
     
         11 . The stackable chair of  claim 10 , wherein the plurality of shock absorbing elements are disposed between the upper seat plate of the upper section and the lower base plate of the lower section. 
     
     
         12 . The stackable chair of  claim 10 , wherein the plurality of shock absorbing elements consists of four shock absorbing elements. 
     
     
         13 . The stackable chair of  claim 11 , wherein the plurality of shock absorbing elements consists of four shock absorbing elements. 
     
     
         14 . The stackable chair of  claim 12 , wherein the four shock absorbing elements are arranged in a generally square pattern. 
     
     
         15 . The stackable chair of  claim 13 , wherein the four shock absorbing elements are arranged in a generally square pattern. 
     
     
         16 . The stackable chair of  claim 12 , wherein the four shock absorbing elements are arranged in a generally rectangular pattern. 
     
     
         17 . The stackable chair of  claim 13 , wherein the four shock absorbing elements are arranged in a generally rectangular pattern. 
     
     
         18 . The stackable chair of  claim 12 , wherein each of the four shock absorbing elements is capable of independent compression in response to pressure changes on the seat and having an uncompressed height, whereupon a compressed height is achieved by at least one of the shock absorbing elements that is lower than the uncompressed height. 
     
     
         19 . The stackable chair of  claim 13 , wherein each of the four shock absorbing elements is capable of independent compression in response to pressure changes on the seat and having an uncompressed height, whereupon a compressed height is achieved by at least one of the shock absorbing elements that is lower than the uncompressed height. 
     
     
         20 . The stackable chair of  claim 12 , wherein the four shock absorbing elements comprise rubber. 
     
     
         21 . The stackable chair of  claim 13 , wherein the four shock absorbing elements comprise rubber.