Patents Examined by Robert O. Baldwin
  • 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