Patents by Inventor Michael W. Fohl

Michael W. Fohl 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 forming an expanded foam form liner including a contoured surface
    Patent number: 4536145
    Abstract: An apparatus for use in cutting a contoured surface in the face of a polystyrene foam block for use in casting concrete, wherein the contoured surface will form the mold surface. The apparatus comprises means for supporting a block of polystyrene foam material, a generally rigid wire having opposite ends, and means for heating the helical wire such that the wire can cut through the polystyrene foam block. The apparatus also comprises means for supporting the heated wire for controlled vertical and horizontal movement with respect to the polystyrene foam block, and with respect to a reference position.
    Type: Grant
    Filed: May 7, 1984
    Date of Patent: August 20, 1985
    Assignee: Tom Sawyer Supply & Equipment
    Inventors: Robert D. Sawyer, Michael W. Fohl