Patents by Inventor Jonas W. Weisel

Jonas W. Weisel 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).

  • Patent number: 4147464
    Abstract: A hole cutter for hard material such as ceramic tile. The cutter has a cylindrical body which has an axial opening and a pilot drill is mounted therein. The drill and the opening are non-circular, for example, hexagonal, in order to prevent relative rotation between the drill and the body. The body has a plurality of axially extending recesses in its periphery and an axially extending cutting blade which has an arcuate cross-section is positioned in each recess. The drill and the blades have carbide tips. The tips on the blades have beveled outer corners which prevent them from radially spreading when drilling and which minimize chipping the tile or its glaze. Mounting holes through the blades and in the recesses are spaced circumferentially away from their center lines to prevent improper mounting.
    Type: Grant
    Filed: March 16, 1978
    Date of Patent: April 3, 1979
    Assignee: American Olean Tile Company, Inc.
    Inventors: Wayne C. Watson, Jonas W. Weisel