Chair with Slotted Hinge Folding Mechanism

Abstract

A folding chair assembly with an improved folding mechanism. The folding chair assembly has a backrest structure, a seat structure, and an armrest structure that are all made from shaped tube forms. The tube form of the armrest structure is attached to the tube form of the backrest structure with a pivot connection. The tube form of the armrest structure is also attached to the tube form of the seat structure at a pivot connection. A slotted linkage is provided that extends between the tube form of the backrest and the tube form of the seat. The slotted linkage is pivotably connected to either the backrest structure or to the seat structure. The slotted linkage defines a slot. The slot engages a fixed pin on either the seat structure or the backrest structure. The fixed pin reciprocally moves within the slot as the folding chair assembly is manipulated.

1 . A folding chair assembly, comprising:
 a backrest structure;   a seat structure having a fixed pin extending therefrom;   an armrest structure that is attached to said backrest structure with a first pivot connection and is attached to said seat structure with a second pivot connection;   a slotted linkage pivotably connected to said backrest structure, wherein said slotted linkage defines a slot, and wherein said fixed pin from said seat structure extends into said slot and reciprocally moves within said slot as said folding chair assembly is manipulated between a folded configuration and an open configuration.   
     
     
         2 - 13 . (canceled) 
     
     
         14 . A folding chair assembly, comprising:
 a backrest tube form having a fixed pin extending therefrom;   a seat tube form;   an armrest tube form that attaches to said backrest tube form with a first pivot connection and attaches to said seat tube form at a second pivot connection;   a slotted linkage pivotably connected to said seat tube form, wherein said slotted linkage defines a slot, and wherein said fixed pin from said backrest tube form extends into said slot and reciprocally moves within said slot as said folding chair assembly is manipulated between a folded configuration and an open configuration.   
     
     
         15 - 20 . (canceled)