Patents by Inventor Glenn Forsythe

Glenn Forsythe 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: 4273202
    Abstract: A drilling bit for blast furnace tap holes and the like which facilitates rapid drilling of clay within the tap hole and which can be readily and easily machined to accommodate tap holes of different diameters. The bit is characterized in having inclined cutting edges which converge into a point and are separated by flutes into which compressed air is forced to rapidly dislodge the drilled clay from between the cutting edges. By virtue of the convergence of the cutting edges into a point, the bit becomes self-centering during the drilling operation.
    Type: Grant
    Filed: February 5, 1979
    Date of Patent: June 16, 1981
    Assignee: Woodings Industrial Corporation
    Inventors: Paul S. Phillips, Glenn Forsythe