Patents by Inventor Willi Schmitzer

Willi Schmitzer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for the continuous production of foam plastic blocks having a rectangular cross-section
    Patent number: 4150075
    Abstract: Continuous foam blocks with rectangular cross-section are produced on a side-limited conveyor band by feeding a foamable mixture to a cover foil travelling with said conveyor band and covering the free surface of the mixture with a bearing layer not earlier than immediately after the supply of the mixture and not later than before the zone in which a skin would be formed on the free surface of the block.
    Type: Grant
    Filed: November 9, 1977
    Date of Patent: April 17, 1979
    Assignee: Maschinenfabrik Hennecke GmbH
    Inventors: Willi Schmitzer, Reiner Raffel, Ferdinand Althausen, Ferdinand Proksa
  • Method for the continuous forming of foam blocks
    Patent number: 4060579
    Abstract: Foam blocks are continuously produced on a conveyor belt having lateral boundaries, the application zone for the mixture being adjustable in its inclination, and a feed means for the cover sheet of the conveyor belt being provided before the point at which the mixture is applied.
    Type: Grant
    Filed: February 11, 1975
    Date of Patent: November 29, 1977
    Assignee: Maschinenfabrik Hennecke GmbH
    Inventors: Willi Schmitzer, Heinz Kisteneich, Ferdinand Proksa
  • Apparatus for producing homogeneous materials or foam from at least two inter-reacting components
    Patent number: 3960506
    Abstract: Apparatus for the production of homogeneous material or foam from a plurality of components. A three-way valve is communicated with supply tanks for the components by pipes having pumps interposed therein. The valve cock has a mixing chamber therein and an outlet for discharge of the mixed components to a mold, and is provided with passageways so that depending on the position of the cock the components can be delivered to the mixing chamber or to return lines for the individual components which lead to the intake side of the pumps. The components are constantly pumped, passing either to the mixing chamber or to the return lines.
    Type: Grant
    Filed: July 9, 1973
    Date of Patent: June 1, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventor: Willi Schmitzer
  • Apparatus for continuous production of elongated foam plastics blocks
    Patent number: 3942925
    Abstract: Continuous foam blocks with rectangular cross-section are produced on a side-limited conveyor band by feeding a foamable mixture to a cover foil travelling with said conveyor band and covering the free surface of the mixture with a bearing layer not earlier than immediately after the supply of the mixture and not later than before the zone in which a skin would be formed on the free surface of the block.
    Type: Grant
    Filed: May 1, 1972
    Date of Patent: March 9, 1976
    Assignee: Maschinenfabrik Hennecke GmbH
    Inventors: Willi Schmitzer, Reiner Raffel, Ferdinand Althausen, Ferdinand Proksa