Yard and garden spray device

Claim 1

A CHEMICAL SPRAY UNIT INCLUDING, A LIQUID CHEMICAL SPRAY TANK HAVING A SPRAY NOZZLE, A BASE END AND A TOP OPENING FOR FILLING AND EMPTYING THEREOF, A COMPRESSED AIR TANK, A FLUID LINE CONNECTING SAID TANKS TOGETHER INCLUDING A QUICK-DISCONNECT COUPLING, AND MEANS FACILITATING HANDLING OF SAID TANKS INCLUDING A FRAME HAVING AN AXLE AND A PAIR OF GROUND-ENGAGING WHEELS, A HANDLE AT AN END OF THE FRAME REMOTE FROM THE AXLE AND HAVING A TERMINAL END, A TANK-SUPPORTING PLATFORM AT THE LOWER END OF SAID FRAME FOR SUPPORTING THE TANKS IN SIDE-BY-SIDE RELATION, A TANK SUPPORT INTERMEDIATE THE END OF THE FRAME ON WHICH THE TANKS PARTIALLY REST, FIRST FASTENING MEANS INCLUDING A RELEASABLE STRAP FOR SECURING THE CHEMICAL TANK TO THE FRAME, AND SECOND FASTENING MEANS INCLUDING A RELEASABLE STRAP FOR SECURING THE COMPRESSED AIR TANK TO THE FRAME, SAID SPRAY UNIT HAVING A SPRAYING POSITION AND AN EMPTYING POSITION, IN SAID SPRAYING POSITION SAID CHEMICAL TANK BEING SUPPORTED IN A GENERALLY UPRIGHT POSITION, AND IN SAID EMPTYING POSITION, SAID CHEMICAL TANK HAVING ITS BASE END ELEVATED ABOVE ITS TOP AND HAVING THE HANDLE TERMINAL END IN ENGAGEMENT WITH THE GROUND.