Liquid supply and mixing system

Claim 1

A LIQUID SUPPLY AND MIXER DELIVERY SYSTEM COMPRISING IN COMBINATION, A PLURALITY OF VARIABLE VOLUME POWER FLUID PUMPS, POWER MEANS OF VARIABLE SPEED ARRANGED TO DRIVE ALL OF SAID POWER FLUID PUMPS AT THE SAME SPEED RELATIONSHIP, A COMMON SOURCE OF HYDRAULIC POWER FLUID AND MEANS TO SUPPLY SAID HYDRAULIC POWER FLUID TO SAID POWER FLUID PUMPS, POWER FLUID OPERATED MOTORS FOR PUMPING SEPARATE MIXTURE FLUID COMPONENTS, MIXTURE COMPONENT FLUID PUMPS OPERATED BY SAID POWER FLUID MOTORS WHICH DELIVER MIXTURE COMPONENT FLUIDS IN A FIXED VOLUMETRIC RATIO RELATIVE TO THE VOLUME FLOW OF POWER FLUID WHICH OPERATES SAID POWER FLUID MOTORS, MEANS FOR SUPPLYING POWER FLUID FROM SAID POWER FLUID PUMPS TO SAID POWER FLUID MOTORS, A MIXING AND DELIVERY UNIT, MEANS TO SUPPLY MIXTURE COMPONENT FLUIDS FROM SAID PLURALITY OF MIXTURE COMPONENT PUMPS TO SAID MIXING AND DELIVERY UNIT, MEANS FOR SEPARATELY METERING THE FLOW OF POWER FLUID FOR EACH POWER FLUID PUMP, MEANS FOR BY-PASSING THE FLUID DELIVERED FROM ONE OF SAID PLURALITY OF POWER FLUID PUMPS AND MIXTURE FLUID COMPONENT PUMPS BACK TO ITS SOURCE OF SUPPLY, AND TIMING MEANS ACTING SIMULTANEOUSLY TO CONTROL ALL OF SAID BY-PASS MEANS.