Stack chair

Claim 1

A STACK CHAIR COMPRISING: A RIGID CHAIR STRUCTURE INCLUDING A SEAT, A BACK REST, FRONT LEGS, AND REAR LEGS, SAID REAR LEGS BEING DISPOSED LATERALLY OUTBOARD OF AND RIGIDLY JOINED AT THEIR UPPER ENDS TO OPPOSITE SIDES, RESPECTIVELY, OF SAID BACK REST AT THE BASE THEREOF, SAID REAR LEGS HAVING UPPER TIPS LOCATED AT THE APPROXIMATE LEVEL OF SAID SEAT AND DEFINING UPPER, UPWARDLY PRESENTED STACKING SHOULDERS DISPOSED LATERALLY OUTBARD OF AND SUBSTANTIALLY FLUSH WITH THE FRONT SIDE OF THE BASE OF SAID BACK REST, SAID REAR LEGS HAVING FRONT AND REAR SIDES, A PAIR OF STACKING BRACKETS SECURED TO THE REAR SIDES OF SAID REAR LEGS, RESPECTIVELY, A DISTANCE BELOW SAID UPPER TIPS THEREOF, SAID STACKING BRACKETS EXTENDING REARWARDLY FROM THE REAR SIDES OF SAID REAR LEGS AND DOWNWARDLY TOWARD THE LOWER ENDS OF SAID REAR LEGS TO DEFINE WITH THE REAR SIDES OF SAID REAR LEGS DOWNWARDLY OPENING RECESSES TERMINATING AT THEIR UPPER ENDS IN DOWNWARDLY PRESENTED LOWER STACKING SHOULDERS, SAID UPPER STACKING SHOULDERS GENERALLY COMPLEMENTING SAID RECESSES, PROJECTING SPACERS MOUNTED ON ONE OF SAID SIDES OF SAID REAR LEGS BELOW SAID STACKING BRACJETS, AND THE VERTICAL SPACING BETWEEN SAID UPPER AND LOWER STACKING SHOULDERS BEING GREATER THAN THE THICKNESS OF SAID SEAT, WHEREBY SAID CHAIR IS ADAPTED TO BE STACKED WITH OTHER LIKE CHAIRS ON ONE TOP OF THE OTHER TO FORM A CHAIR STACK WHEREIN THE REAR LEGS ON EACH CHAIR STRADDLE THE SEAT OF THE ADJACENT LOWER CHAIR DIRECTLY IN FRONT OF THE REAR LEGS OF THE LATTER CHAIR, THE STACKING BRACKETS ON EACH CHAIR STRADDLE THE BACK REST OF THE ADJACENT LOWER CHAIR AND REST ON THE UPPER TIPS OF THE REAR LEGS OF THE LATTER IN THE RECESSES OF THE ADJACENT UPPER CHAIR TO INTERLOCK THE ADJACENT CHAIRS AGAINST RELATIVE FORE AND AFTER MOVEMENT, AND THE SPACERS ON THE REAR LEGS OF EACH CHAIR ENGAGE THE REAR LEGS OF AN ADJACENT CHAIR, THEREBY TO LOCATE EACH CHAIR IN A STACKED POSITION RELATIVE TO THE ADJACENT LOWER CHAIR WHEREIN THE SEAT OF EACH CHAIR IS VERTICALLY SPACED FROM AND INCLINES UPWARDLY RELATIVE TO THE SEAT OF THE ADJACENT LOWER CHAIR IN A FORWARD DIRECTION OF THE CHAIR SEATS.