Apparatus for continuously blending latex and a preformed froth

Claim 1

A FOAM BLENDER OF THE TYPE DESCRIBED, COMPRISING A PLURALITY OF MIXING CHAMBERS, A ROTOR DISPOSED IN EACH OF SAID CHAMBERS TO PROVIDE A TORTUOUS FLOW PATH THROUGH THE CHAMBERS ABOUT THE ROTORS, THE DISTANCE BETWEEN THE SURFACES OF SAID ROTORS AND THE WALLS OF SAID CHAMBERS BEING PROGRESSIVELY LESS FROM THE CENTERS OF ROTATION OF SAID ROTORS TO THE PERIPHERIES THEREOF TO PROVIDE A FLOW PATH HAVING A SUBSTANTIALLY CONSTANT CROSS-SECTIONAL AREA THROUGHOUT THE BLENDER, A PLURALITY OF SMOOTH ROUNDED PINS PROJECTING FROM THE SURFACES OF SAID ROTORS AND FROM THE WALLS OF SAID CHAMBERS INTO THE FLOW PATH TO INTERFOLD THE INGREDIENTS WHICH FORM THE BLEND GENTLY WHEN THE ROTORS ARE ROTATED, EACH OF SAID CHAMBERS HAVING AN INLET AND OUTLET THEREIN, THE INLETS OF SAID CHAMBERS BEING SUBSTANTIALLY ALIGNED, THE OUTLETS OF THE CHAMBERS PRECEDING THE FINAL CHAMBER BEING SUBSTANTIALLY ALIGNED AND ALIGNED WITH SAID INLETS, A SHAFT SUSPENDED IN CANTILEVER FASHION PROJECTING INTO ALL OF SAID CHAMBERS THROUGH SAID ALIGNED INLETS AND OUTLETS TO ROTATABLY SUPPORT SAID ROTORS, AND AN UNOBSTRUCTED DISCHARGE CONDUIT ALIGNED