Pressure mixer and dispenser system

Claim 1

A LIQUID MIXING AND DISPENSING SYSTEM COMPRISING A CONTROL GUN, A LIQUID INLET TO THE CONTROL GUN, LIQUID OUTLET MEANS FROM THE CONTROL GUN, A CONTROL CHAMBER COMMUNICATING THE INLET WITH THE OUTLET, THEREBY ESTABLISHING A LIQUID PASSAGE THROUGH THE GUN FROM THE INLET THROUGH THE CONTROL CHAMBER TO THE OUTLET, VALVE MEANS IN THE LIQUID PASSAGE FOR REGULATING THE FLOW OF LIQUID INTO THE CONTROL CHAMBER, MEANS TO CONTROL THE VALVE MEANS TO INDIVIDUAL SETTINGS TO SELECTIVELY PROVIDE FIRST CLOSED SETTING FOR COMPLETELY BLOCKING THE FLOW OF LIQUID THROUGH THE CONTROL CHAMBER, A SECOND RESTRICTED SETTING FOR PERMITTING RESTRICTED FLOW OF LIQUID THROUGH THE CONTROL CHAMBER, A THIRD RESTRICTED SETTING FOR PROVIDING A GREATER RESTRICTION TO FLOW THAN IS PROVIDED BY THE SECOND SETTING, AND A FOURTH UNRESTRICTED SETTING IN WHICH FLOW OF LIQUID THROUGH THE GUN IS UNRESTRICTED, A FIRST LIQUID SOURCE, A SECOND LIQUID SOURCE, A FLUID MIXER, MEANS TO SUPPLY THE FIRST LIQUID FROM ITS SOURCE TO THE MIXER, MEANS TO SUPPLY THE SECOND LIQUID FROM ITS SOURCE TO THE MIXER, A FIRST PUMP TO PUMP LIQUID FROM THE MIXER TO THE CONTROL GUN INLET, A SECOND PUMP FOR PUMPING LIQUID FROM THE SECOND LIQUID SOURCE TO THE CONTROL GUN INLET WHEN THE SECOND PUMP IS EXPOSED TO PULSATION OF THE FIRST PUMP, MEANS RESPONSIVE TO SETTING OF THE VALVE MEANS TO THE FIRST SETTING FOR DEACTIVATING THE FIRST PUMP, MEANS RESPONSIVE TO SETTING OF THE VALVE MEANS TO THE SECOND SETTING FOR PERMITTING LIQUIDS TO FLOW SERIALLY FROM THE FIRST LIQUID SOURCE, THROUGH THE FIRST PUMP AND THROUGH THE GUN, MEANS RESPONSIVE TO SETTING OF THE VALVE MEANS IN THE THIRD SETTING FOR EXPOSING THE SECOND PUMP TO PULSATIONS OF THE FIRST PUMP AND THEREBY CAUSING LIQUID FROM THE SECOND LIQUID SOURCE TO MIX WITH LIQUID FROM THE FIRST LIQUID SOURCE, AND MEANS RESPONSIVE TO SETTING OF THE VALVE MEANS IN THE FOURTH SETTING FOR TERMINATING EXPOSURE OF THE SECOND PUMP TO PULSATIONS OF THE FIRST PUMP.