Folding chair

Claim 1

A FOLDING CHAIR COMPRISING A SUPPORTING BASE STRUCTURE INCLUDING TWO PAIRS OF PIVOTALLY INTERCONNECTED FOLDING LEG MEMBERS EACH INCLUDING AN INNER LEG MEMBER AND AN OUTER LEG MEMBER HAVING AN UPPER END PORTION, A COMBINATION HINGE AND BRACKET UNIT DISPOSED AT THE UPPER END PORTION OF EACH OF SAID LEG MEMBERS, EACH OF SAID UNITS INCLUDING A GENERALLY CHANNEL-SHAPED PORTION EMBRACING THE UPPER END PORTION OF THE ASSOCIATED LEG MEMBER WITH THE CHANNEL-SHAPED PORTION RIGIDLY ATTACHED TO THE UPPER END PORTION OF THE ASSOCIATED LEG MEMBER, EACH OF SAID UNITS INCLUDING A TOP WALL PORTION, SAID CHAIR INCLUDING TWO PAIRS OF SPACED PARALLEL SEAT RAIL SLAT MEMBERS, ONE PAIR OF SAID SLAT MEMBERS BEING DISPOSED ADJACENT ONE ANOTHER AND BEING RIGIDLY SECURED AT SPACED PORTIONS THEREOF TO THE TOP WALL PORTIONS OF A PAIR OF UNITS SECURED TO THE LEG MEMBERS AT ONE SIDE OF THE CHAIR, AND THE OTHER PAIR OF SLAT MEMBERS BEING DISPOSED ADJACENT ONE ANOTHER AND BEING RIGIDLY SECURED AT SPACED PORTIONS THEREOF TO THE TOP WALL PORTIONS OF THE OTHER PAIR OF UNITS SECURED TO THE LEG MEMBERS AT THE OPPOSITE SIDE OF THE CHAIR, WHEREBY THE SLAT MEMBERS PROVIDE A RIGID INTERCONNECTION BETWEEN THE UPPER PORTIONS OF THE LEG MEMBERS AT EACH SIDE OF THE CHAIR, EACH OF SAID SLAT MEMBERS HAVING A DOWNWARDLY AND OUTWARDLY INCLINED INNER EDGE PORTION SUCH THAT EACH ADJACENT PARI OF SLAT MEMBERS PROVIDES AN INVERTED V-SHAPED CHANNEL THEREBETWEEN, A FLEXIBLE SEAT MEMBER HAVING OPPOSITE EDGE PORTIONS EXTENDING THROUGH THE CHANNELS PROVIDED BETWEEN THE SLAT MEMBERS AT OPPOSITE SIDES OF THE CHAIR, A PAIR OF RETAINING RODS EACH OF WHICH EXTENDS SUBSTANTIALLY THROUGHOUT THE LENGTH OF ONE OF THE V-SHAPED CHANNELS AND HAVING AN EDGE PORTION OF THE FLEXIBLE SEAT MEMBER WRAPPED SECURELY THEREAROUND SUBSTANTIALLY THROUGHOUT THE LENGTH THEREOF, THE RETAINING ROD MEMBERS EACH HAVING A DIAMETER GREATER THAN THE OPENING PROVIDED BETWEEN THE SLAT MEMBERS AT THE APEX PORTIONS OF THE V-SHAPED CHANNELS WHEREBY THE OPPOSITE EDGE PORTIONS OF THE SEAT MEMBER ARE HELD IN PLACE WITHIN SAID V-SHAPED CHANNELS AND CANNOT PULL OUT THEREFROM WHEN THE SEAT IS UNDER LOAD, EACH OF SAID UNITS ALSO INCLUDING A HINGE LEAF MEMBER PIVOTALLY INTERCONNECTED WITH THE ASSOCIATED UNIT, A PAIR OF SEAT RAIL MEMBERS DISPOSED AT OPPOSITE SIDES OF THE CHAIR, EACH OF SAID SEAT RAIL MEMBERS BEING RIGIDLY SECURED AT SPACED PORTIONS THEREOF TO A PAIR OF SAID LEAF MEMBERS AT ONE SIDE OF THE CHAIR WHEREBY THE RAIL MEMBERS ARE PIVOTALLY INTERCONNECTED WITH THE LEG MEMBERS, A PAIR OF ARM RESTS AND A BACK REST STRUCTURE SUPPORTED BY SAID SEAT RAIL MEMBERS, EACH OF SAID SEAT RAIL MEMBERS WHEN THE CHAIR IS IN ERECTED OPERATIVE POSITION EXTENDING SUBSTANTIALLY PARALLEL TO AND ADJACENT A PAIR OF SAID SEAT RAIL SLAT MEMBERS IN SPANNING RELATION TO THE CHANNEL THEREBETWEEN SO AS TO CLAMP PORTIONS OF SAID SEAT MEMBER BETWEEN SAID SEAT RAIL MEMBERS AND SAID SEAT RAIL SLAT MEMBERS.