Patents by Inventor P. Fred Hammers

P. Fred Hammers 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).

  • Method of repairing a water-cooled electrode holder
    Patent number: 4490898
    Abstract: A method of repairing a water-cooled electrode holder for use in electric furnaces, of the type comprising a base and a bowl secured to the base for encompassing and supporting a vertical cylindrical electrode. Such holders suffer deterioration in the region of the inner surface of the bowl which is opposite the base. According to the invention, the outer semi-cylindrical portion of the bowl is cut off on a substantially diametral plane and replaced by a new portion. The new portion is formed from a flat slab of copper. To make the water passageways in the new portion match those in the old, a pattern of the locations of the passageways in the old portion is made and transferred to one end of the slab. The slab is then drilled lengthwise at the locations transferred from the pattern, and the holes are filled with sand and plugged. The slab is then bent to U-shape to comprise a semi-cylindrical portion having two straight ends thereon.
    Type: Grant
    Filed: April 8, 1983
    Date of Patent: January 1, 1985
    Assignee: Wilson Welding Company, Inc.
    Inventors: James G. Wilson, II, P. Fred Hammers
  • Method of making a water-cooled electrode holder
    Patent number: 4393565
    Abstract: A water-cooled electrode holder for use in electric furnaces, comprising a base and a bowl secured to the base for encompassing and supporting a vertical cylindrical electrode, is formed by rolling from a thick copper sheet which has first been drilled with a plurality of intersecting deep holes. The plate is drilled when flat and then bent to horseshoe configuration, the holes being filld with sand to keep their shape during bending. Plugs are then inserted to block the intersections of certain of the holes but to leave a single circuitous passageway through the bowl, for the passage of cooling water.
    Type: Grant
    Filed: June 12, 1981
    Date of Patent: July 19, 1983
    Assignee: Wilson Welding Company, Inc.
    Inventors: James G. Wilson, II, P. Fred Hammers
  • Water-cooled electrode holder
    Patent number: 4342878
    Abstract: A water-cooled electrode holder for use in electric furnaces, comprises a base and a bowl secured to the base for encompassing and supporting a vertical cylindrical electrode. The bowl is formed by rolling from a thick copper sheet which has first been drilled with a plurality of intersecting deep holes. The plate is drilled when flat and then bent to horseshoe configuration, the holes being filled with sand to keep their shape during bending. Plugs are then inserted to block the intersections of certain of the holes but to leave a single circuitous passageway through the bowl, for the passage of cooling water.
    Type: Grant
    Filed: May 9, 1980
    Date of Patent: August 3, 1982
    Assignee: Wilson Welding Company, Inc.
    Inventors: James G. Wilson, II, P. Fred Hammers