Patents by Inventor Robert van der Hulst

Robert van der Hulst 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).

  • Method and apparatus for volumetric dosing viscous products
    Patent number: 4671429
    Abstract: A method and apparatus for dosing viscous, aerated material like ice-cream and ice mixes. The method comprises filling a volumetric dosing chamber from a supply, dispensing said amount through a dispensing conduit and returning at least part of the material remaining in said conduit to the supply. The apparatus comprises two preferably coupled three-way valves, the one connecting a dosing chamber with either a supply or a dosing conduit, the other connecting a suction device with either the dosing conduit or the supply.
    Type: Grant
    Filed: November 9, 1984
    Date of Patent: June 9, 1987
    Assignee: Thomas J. Lipton, Inc.
    Inventors: Cornelis Spaanderman, Robert van der Hulst, Abraham W. van Rij