Patents by Inventor Walter W. Chamberlain, III

Walter W. Chamberlain, III 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).

  • Ceiling board aperture
    Patent number: 5231810
    Abstract: The invention is a ceiling board with a factory cut aperture therein. The edges of the ceiling board and/or the edges of a design cut in the face of the board are of the same or compatible design to that of the edge(s) of the aperture.
    Type: Grant
    Filed: April 23, 1992
    Date of Patent: August 3, 1993
    Assignee: Armstrong World Industries, Inc.
    Inventors: Barry Buhay, Walter W. Chamberlain, III, Donald F. Claussen
  • Method of making perforated vinyl film ceiling board
    Patent number: 3954540
    Abstract: A standard fiber composition ceiling board is provided with an outer laminate of plasticized vinyl film. The holes in the film are smaller than the holes in the fiber composition ceiling board. The product is made by laminating the vinyl film to the ceiling board, then perforating the film and the ceiling board with pin punches. The perforations in the board stay at the size at which they are formed, while the holes in the film shrink in size.
    Type: Grant
    Filed: February 25, 1974
    Date of Patent: May 4, 1976
    Assignee: Armstrong Cork Company
    Inventor: Walter W. Chamberlain, III