Patents by Inventor Walter S. Bergquist

Walter S. Bergquist 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).

  • Apparatus for casting a plumbing fixture
    Patent number: 6779996
    Abstract: An apparatus is disclosed for automatically casting separately molded bowl and rim members and then connecting them together while both are in an upside down position. During the connection of the rim to the bowl, the bowl is preferably supported on two opposing sides by the mold. These procedures reduce deformation of the cast bowl while it is still in a “greenware” condition.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: August 24, 2004
    Assignee: Kohler Co.
    Inventors: Walter S. Bergquist, Frank P. Williams, Harold A. Teague
  • Method and apparatus for casting a plumbing fixture
    Patent number: 6428643
    Abstract: A method of casting toilets and the like where the bowl and rim are separately molded and then connected together while both are in an upside down position. During the connection of the rim to the bowl, the bowl is preferably supported on two opposing sides by the mold. These procedures reduce deformation of the cast bowl while it is still in a “greenware” condition. An apparatus for carrying out this method in an automated manner is also disclosed.
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: August 6, 2002
    Assignee: Kohler Co.
    Inventors: Walter S. Bergquist, Frank P. Williams, Harold A. Teague
  • Apparatus for casting a plumbing fixture
    Publication number: 20020100536
    Abstract: An apparatus is disclosed for automatically casting separately molded bowl and rim members and then connecting them together while both are in an upside down position. During the connection of the rim to the bowl, the bowl is preferably supported on two opposing sides by the mold. These procedures reduce deformation of the cast bowl while it is still in a “greenware” condition.
    Type: Application
    Filed: March 22, 2002
    Publication date: August 1, 2002
    Inventors: Walter S. Bergquist, Frank P. Williams, Harold A. Teague