Patents by Inventor Daniel H. Hickman

Daniel H. Hickman 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).

  • Combination of a gas-filled interrupter and oil-filled transformer
    Patent number: 5661280
    Abstract: A gas-insulated switch for a distribution transformer and its associated electrical connections are located within a tank containing insulating and cooling oil for the transformer.
    Type: Grant
    Filed: August 2, 1995
    Date of Patent: August 26, 1997
    Assignee: ABB Power T&D Company Inc.
    Inventors: Arthur P. Kuss, William J. Book, Daniel H. Hickman
  • Opening apparatus having an alignment system for producing a continuous metal strip from a split-tube
    Patent number: 5485945
    Abstract: Twin metal billets are fed to dual circumferential grooves formed in a rotating wheel. The billets are advanced first to a wedge-shaped gap which deforms the billets and are then advanced to a die. The die has a die opening with a circumferentially discontinuous, annular cross-section. The metal from each billet merges in the die opening and exits therefrom in the form of a slit tube. The tube is then opened and flattened to form a flat strip by advancing the slit tube over a forming member having a progressively increasing width. As the tube is advanced over the forming member, an alignment system maintaining the tube in a centered position. The alignment system includes a light source disposed within the tube and two arrays of photo-transistors arranged to receive light from the light source, the amount of light sensed by each array being a function of the position of the slit in the tube relative to a desired position.
    Type: Grant
    Filed: January 25, 1995
    Date of Patent: January 23, 1996
    Assignee: ABB Power T&D Company Inc.
    Inventors: Thomas L. Linsenbardt, Daniel H. Hickman
  • Opening apparatus having an alignment system for producing a continuous metal strip from a split-tube
    Patent number: 5406818
    Abstract: Twin metal billets are fed to dual circumferential grooves formed in a rotating wheel. The billets are advanced first to a wedge-shaped gap which deforms the billets and are then advanced to a die. The die has a die opening with a circumferentially discontinuous, annular cross-section. The metal from each billet merges in the die opening and exits therefrom in the form of a slit tube. The tube is then opened and flattened to form a flat strip by advancing the slit tube over a forming member having a progressively increasing width. As the tube is advanced over the forming member, an alignment system maintaining the tube in a centered position. The alignment system includes a light source disposed within the tube and two arrays of photo-transistors arranged to receive light from the light source, the amount of light sensed by each array being a function of the position of the slit in the tube relative to a desired position.
    Type: Grant
    Filed: September 15, 1993
    Date of Patent: April 18, 1995
    Assignee: ABB Power T & D Company
    Inventors: Thomas L. Linsenbardt, Daniel H. Hickman