Stackable Chair

Abstract

A chair according to the invention is provided. The chair preferably includes a substantially square seat. The seat includes four walls. Each of the walls preferably projects substantially perpendicularly downward from one side of the outer perimeter of the upper surface. Each of the walls preferably includes an interior surface and an exterior surface. Each of the walls preferably includes a stability tab mounted on the interior surface. The stability tab is adapted to engage at least a portion of a chair that is stacked immediately beneath the folding chair. The chair also preferably includes a first rigid portion that is pivotably attached to the seat at a first set of two contact points. The first rigid portion includes a backrest. The second rigid portion is pivotably attached to the seat at a second set of two contact points. Finally, the chair may include a pair of connectors. Each of the pair may be pivotably attached to the first rigid portion and pivotably attached to the second rigid portion.

1 . A folding chair comprising:
 a substantially square seat, said seat comprising four walls, each of said walls that projects substantially perpendicularly downward from one side of the outer perimeter of the upper surface, each of said walls that comprises an interior surface and an exterior surface, each of said walls that comprises a stability tab mounted on the interior surface, each of said stability tabs that is adapted to engage at least a portion of a chair that is stacked immediately beneath the folding chair;   a first rigid portion that is pivotably attached to said seat at a first set of two contact points, said first rigid portion that comprises a backrest;   a second rigid portion that is pivotably attached to said seat at a second set of two contact points; and   a pair of connectors, each of the pair that comprises a first end pivotably attached to the first rigid portion and a second end pivotably attached to the second rigid portion.   
   
   
       2 . The folding chair of  claim 1  wherein the stability tab traverses a plane defined by a bottom edge of the four walls. 
   
   
       3 . The folding chair of  claim 1  said stability tab further adapted to engage at least a seat portion of a chair that is stacked immediately beneath the folding chair. 
   
   
       4 . The folding chair of  claim 1  said stability tab further adapted to engage an upper surface of a chair that is stacked immediately beneath the folding chair. 
   
   
       5 . The folding chair of  claim 1 , said upper surface comprising a recessed top layer that is set back from the perimeter of the upper surface, said recessed top layer that is adapted to engage at least a portion of a chair that is stacked immediately above the folding chair. 
   
   
       6 . The folding chair of  claim 1 , said walls that are joined to form an area enclosed on four sides by the walls and on one side by an underside of the seat. 
   
   
       7 . A folding chair seat comprising:
 a substantially square upper surface; and   four walls, each of said walls that project substantially perpendicularly downward from one side of the outer perimeter of the upper surface, each of said walls that comprises an interior surface and an exterior surface, each of said walls that comprises a stability tab mounted on the interior surface, each of said stability tabs that is adapted to engage at least a portion of a chair that is stacked immediately beneath a chair comprising the folding chair seat.   
   
   
       8 . The folding chair seat of  claim 7  wherein one end of each of the stability tabs traverses a plane defined by a bottom edge of the four walls. 
   
   
       9 . The folding chair seat of  claim 7  each of said stability tabs further adapted to engage at least a seat portion of a chair that is stacked immediately beneath the chair comprising the folding chair seat. 
   
   
       10 . The folding chair seat of  claim 7  each of said stability tab further adapted to engage an upper surface of a chair that is stacked immediately beneath a chair comprising the folding chair seat. 
   
   
       11 . The folding chair seat of  claim 7 , said upper surface comprising a recessed top layer that is set back from the perimeter of the upper surface, said recessed top layer that is adapted to engage at least a portion of a chair that is stacked immediately above the chair comprising the folding chair seat. 
   
   
       12 . The folding chair seat of  claim 7 , said walls that are joined to form an area enclosed on four sides by the walls and on one side by an underside of the seat.