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US 5,660,465 AGranted
Apparatus and system for producing foamed cementitious products
OwnerWalter R. Masoninventor
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OwnerWalter R. Masoninventor
Estimating the term…
An apparatus and method for introducing a metered volume of air into a continuously generated and flowing slurry composed of metered dry cementitious material, metered water and metered air entraining (or foaming) agent and for homogenizing this air into bubbles or cells of relatively small size to produce a uniform cellular product. The apparatus comprises a positive displacement progressive cavity slurry pump driven by a variable speed motor. By driving the pump at a speed in excess of the speed required to accommodate the volume of slurry being generated, the pump will draw air proportionately to this excess of speed. Further elements of the apparatus comprise a closed conduit system for the slurry discharging from the pump, this system communicating with a cylindrical homogenizing apparatus wherein rotating elements homogenize the metered air and slurry with the cooperation of the air entraining agent into a foamed material having relatively small air cells of uniform size. The homogenized slurry material is propelled through and beyond the homogenizing apparatus through a communicating conduit to the point of deposit.
An apparatus for continuously introducing a volume of air into a flowing slurry composed of cementitious material, water and an air entraining agent and for homogenizing said volume of air into bubbles or cells of relatively small and uniform size within said slurry, comprising:
A method for continuously introducing air at a controlled rate into a flowing slurry composed of cementitious material, water and foaming agent, and for homogenizing said introduced air into bubbles or calls of relatively small and uniform size comprising the steps of:
Dependencies are inferred from the claim text.