Patents by Inventor Kenneth L. Welk

Kenneth L. Welk 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).

  • Single-pass tile domer
    Patent number: 4664616
    Abstract: An apparatus for providing a square tile with a domed configuration. The tile passes over a bowed roller which presses upon the center region of the tile while restraining belts hold the four corners of the tile in a depressed condition and the apparatus imparts a domed configuration to the tile.
    Type: Grant
    Filed: May 27, 1986
    Date of Patent: May 12, 1987
    Assignee: Armstrong World Industries, Inc.
    Inventor: Kenneth L. Welk