Patents by Inventor Hans W. Boehm

Hans W. Boehm 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 thermally severing glass
    Patent number: 4232809
    Abstract: A method of and apparatus for thermally severing thick glass sheets by applying an energized electrical resistance wire element against the glass surface coincident with the intended line of cut and providing mechanical means adjacent the starting end of the cut to spread the glass portions on opposite sides of the line apart as the cut begins to run from the starting end. A glass spreading arrangement also can be provided at the trailing end of the cut to assure a straight cut along the intended path from end to end.
    Type: Grant
    Filed: April 16, 1979
    Date of Patent: November 11, 1980
    Assignee: Libbey-Owens-Ford Company
    Inventors: Hans W. Boehm, Richard A. Herrington, Waldemar W. Oelke
  • Method of and apparatus for thermally severing glass
    Patent number: 4113162
    Abstract: A method of and apparatus for thermally severing thick glass sheets by applying an energized electrical resistance wire element against the glass surface coincident with the intended line of cut and providing mechanical means adjacent the starting end of the cut to spread the glass portions on opposite sides of the line apart as the cut begins to run from the starting end. A glass spreading arrangement also can be provided at the trailing end of the cut to assure a straight cut along the intended path from end to end.
    Type: Grant
    Filed: February 9, 1977
    Date of Patent: September 12, 1978
    Assignee: Libbey-Owens-Ford Company
    Inventors: Hans W. Boehm, Richard A. Herrington, Waldemar W. Oelke
  • Method of and apparatus for thermally severing glass
    Patent number: 4109840
    Abstract: A method of and apparatus for cutting relatively thick glass sheets by applying surface contact, conductive heat to the glass surface along the desired line of cut. An elongated, heated conductor rod is placed on the glass surface along the desired line of cut for transmitting heat thereto to create a thermal differential line and effect a cut therealong. Pressure means bear against the conductor rod to maintain the same in continuous contact throughout with the glass surface along the length of the desired line of cut.
    Type: Grant
    Filed: April 19, 1976
    Date of Patent: August 29, 1978
    Assignee: Libbey-Owens-Ford Company
    Inventors: Waldemar W. Oelke, Hans W. Boehm, Richard A. Herrington