Mixing and dispensing apparatus

Claim 1

APPARATUS FOR MIXING AND DISPENSING UREATHANE PRODUCTS COMPRISING A DISPENSING HEAD HAVING A BORE THEREIN, A HOLLOW ROTARY VALVE ELEMENT MOUNTED IN SAID BORE, A DISCHARGE NOZZLE AT ONE END OF SAID HOLLOW VALVE CONNECTED TO THE BORE THEREOF, PASSAGES IN SAID HEAD, APERTURES IN SAID HOLLOW ROTARY VALVE OPERABLE IN ONE POSITION TO REGISTER WITH SAID PASSAGES AND IN ANOTHER POSITION TO PASS OUT REGISTRY WITH SAID PASSAGES, METERING DEVICES CONNECTED TO AT LEAST TWO OF SAID PASSAGES, SAID METERING DEVICES CONSISTING OF GATE VALVES HAVING A STRAIGHT-LINE BORE AND A GATE OPERABLE TO INTERCEPT THE BORE OF THE VALVE AND THROTTLE THE FLOW OF MATERIAL THERETHROUGH, SHUTOFF VALVES CONTROLLING THE FLOW OF MATERIAL TO SAID PASSAGES, CONTAINERS CONTAINING PRESSURIZED INGREDIENTS FOR SAID URETHANE PRODUCT CONNECTED TO SAID SHUT-OFF VALVE WHEREBY UPON OPENING OF THE LATTER VALVES AND UPON REGISTRY OF SAID APERTURES WITH SAID PASSAGES, SAID INGREDIENTS FLOW INTO THE INTERIOR OF SAID ROTARY VALVE ELEMENT, AND AN AGITATOR ROTATABLE COAXIALLY WITHIN SAID VALVE AND HAVING A HEAD MOUNTED IN SAID VALVE OPERABLE UPON ROTATION OF SAID AGITATOR TO EFFECT A MIXTURE OF INGREDIENTS IN THE BORE OF SAID HOLLOW ROTARY VALVE.