Asphalt blending

Claim 1

IN THE METHOD OF PREPARING A CUTBACK ASPHALT FROM A MATERIAL SELECTED FROM THE CLASS CONSISTING OF SEMI-SOLID AND SOLID HYDROCARBONACEOUS MATERIALS AND A LOW VISCOSITY HYDROCARBON OIL WHICH METHOD UTILIZES A TANK PROVIDED WITH DISTRIBUTOR MEANS POSITIONED SUBSTANTIALLY AT THE BOTTOM OF SAID TANK, SAID DISTRIBUTOR MEANS BEING PROVIDED WITH A MULTIPLICITY OF SUBSTANTIALLY UNIFORMLY SPACED ORIFICES, SAID ORIFICES BEING BETWEEN ABOUT 1/4 AND 3/4 INCH IN DIAMETER AND BEING POSITIONED SO THAT FLUID LEAVING SAID ORIFICES IS DIRECTED UPWARDLY IN A DIRECTION, SUBSTANTIALLY PERPENDICULAR TO THE BOTTOM OF SAID TANK, SAID ORIFICES BEING ORDINARILY UTILIZED FOR THE INTRODUCTION OF GASEOUS FLUID TO AFFORD AGITATION OF THE CONTENTS OF SAID TANK TO PRODUCE THE CUTBACK ASPHALT, THE IMPROVEMENT WHICH COMPRISES INTRODUCING SAID HYDROCARBONACEOUS MATERIALS INTO SAID TANK, MAINTAINING SAID MATERIALS AT A TEMPERATURE BETWEEN ABOUT 150*F. AND ABOUT 350* TO AFFORD A SAYBOLT FUROL VISCOSITY OF NOT MORE THAN ABOUT 3000 SECONDS, AND INTRODUCING SAID LOW VISCOSITY HYDROCARBON OIL THROUGH SAID DISTRIBUTOR MEANS AT A RATE CAUSING VIOLENT AGITATION OF THE CONTENTS OF SAID TANK SUCH THAT BY THE TIME ALL OF SAID HYDROCARBON OIL HAS BEEN INTRODUCED INTO SAID TANK THE ENTIRE CONTENTS OF SAID TANK ARE SUBSTANTIALLY COMPLETELY INTERMINGLED TO FORM THE CUTBACK ASPHALT.