Patents Assigned to J. Mulcahy Enterprises Inc.
  • Patent number: 5699850
    Abstract: An induction stirring method wherein molten metal is electromagnetically stirred during continuous casting in a mold includes control of velocity of the stirring motion at the meniscus and the region adjacent to it, either to decrease or enhance the stirring of the molten metal produced by the main electromagnetic stirrer. An A.C. magnetic stirring modifier is positioned adjacent the region of meniscus to produce electromagnetic stirring of the molten metal at the meniscus, either to oppose the rotary motion of the main electromagnetic stirrer and provide a surface free from the stirring motion or to enhance the rotary stirring motion of the main magnetic stirrer. These two alternative modes of operation permit a casting machine to be used for casting molten metals requiring widely varying operating conditions.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 23, 1997
    Assignee: J. Mulcahy Enterprises Inc.
    Inventors: Leonid Beitelman, Joseph A. Mulcahy
  • Patent number: 5197535
    Abstract: Twin-roll casting of molten metal to form a continuous cast metal strand is improved by electromagnetic stirring of molten metal immediately upstream of the nip between the rolls to provide a substantially homogenized melt of substantially uniform temperature upstream of the nip.
    Type: Grant
    Filed: September 17, 1991
    Date of Patent: March 30, 1993
    Assignee: J. Mulcahy Enterprises Inc.
    Inventor: Joseph A. Mulcahy
  • Patent number: 5011528
    Abstract: Liquid metals are centrifugally pumped from a static container without the necessity for employing a mechanical impeller. A powerful rotating magnetic field surrounding the static container causes the metal to be rotated vigorously and the velocity head so created is converted in a volute shaped head into vertical motion to the desired delivery point.
    Type: Grant
    Filed: June 8, 1990
    Date of Patent: April 30, 1991
    Assignee: J. Mulcahy Enterprises Inc.
    Inventor: Joseph A. Mulcahy