Foam pump system

Claim 1

IN A FOAM PUMP SYSTEM: A PUMP INCLUDING A HOUSING DEFINING A CHAMBER, SAID HOUSING HAVING AN INLET PASSAGE AND AN OUTLET PASSAGE IN COMMUNICATION WITH SAID CHAMBER, CONDUIT MEANS FOR CONDUCTING A LIQUID MIXTURE OF WATER AND FOAM STABILIZER TO SAID INLET PASSAGE OF SAID PUMP, SAID PUMP HAVING MEANS DISPOSED IN SAID CHAMBER FOR CREATING A VACUUM TO DRAW THE FLUID MIXTURE FROM SAID CONDUIT MEANS, THROUGH SAID INLET PASSAGE AND INTO SAID CHAMBER AND FOR DISCHARGING THE LIQUID MIXTURE FROM SAID CHAMBER THROUGH SAID OUTLET PASSAGE UNDER PRESSURE MEANS FOR ENABLING A GASEOUS FLUID TO BE FREELY ADMITTED INTO SAID CHAMBER BETWEEN SAID INLET AND OUTLET PASSAGES, AND RESTRICTING MEANS TO ADMIT A CONTROLLED AMOUNT OF A GASEOUS FLUID INTO SAID CONDUIT MEANS FOR CONTROLLING THE AMOUNT OF LIQUID DRAWN INTO SAID PUMP.