Patents by Inventor Hugh C. Behrens

Hugh C. Behrens 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: 4899592
    Abstract: A device for measuring the flow of molten metal through a conduit using the principles involved in generating electricity. A pair of coil wound fingered core members are positioned about a flattened conduit. Each core member having an odd number of fingers. The odd numbered coils are connected in series to a current source and the even numbered coils are connected to an ammeter. Coil turns and core fingers laminations are separated by specially treated mica.
    Type: Grant
    Filed: June 6, 1985
    Date of Patent: February 13, 1990
    Assignee: The Dow Chemical Company
    Inventor: Hugh C. Behrens
  • Patent number: 4828459
    Abstract: An annular electromagnetic induction pump is disclosed which operates without an external cooling source in pumping molten metals such as magnesium, aluminum, lead, zinc, antimony and their numerous alloys. Also disclosed is an electrical insulation material which is serviceable without degradation at temperatures up to 1500.degree. F. Also disclosed is a six coil version of said annular electromagnetic induction pump which provides reduced size advantages.
    Type: Grant
    Filed: December 16, 1987
    Date of Patent: May 9, 1989
    Assignee: The Dow Chemical Company
    Inventor: Hugh C. Behrens
  • Patent number: 4688431
    Abstract: A device for measuring molten metal flow within a conduit capable of use without external cooling employing principles of magnetic field and electrical current generation therefrom by employing a post manufactured oxidation stabilized thermally treated mica as the electrica insulation between the laminations of the elements of the fingered magnetic laminate and annularly wound coils within the fingered laminate assembly, comprised of a tube and a tube core positioned within the tube forming an annulus therebetween, at least a pair of fingered laminate assemblies having an even number of fingers positioned about the periphery of said tube, each of the spaces between the fingers containing coils annularly wound about the tube, alternating coils being connected to a power source to induce a current in the intermediate coil(s) when metal is flowing in the annulus, which current is proportionate to the metal flow and is measured.
    Type: Grant
    Filed: June 11, 1985
    Date of Patent: August 25, 1987
    Assignee: The Dow Chemical Company
    Inventor: Hugh C. Behrens
  • Patent number: 4635706
    Abstract: There is disclosed a combination of several novel elements in combination with improved designs of existing elements, to provide a relatively simple means for delivering high melting molten metals, such as magnesium and its alloys, to a continuous caster without exposure of the metal to the ambient atmosphere, at reproducible pressures and quantities to enable the advanced casting technologies to be utilized to their fullest potential. Thus in accordance with the present invention there is described a molten metal handling system, particularly useful for delivering high melting temperature metals in their molten state from a melting pot or crucible to a casting machine, e.g. die caster, strip caster, sand molds and the like, remote from the melting pot or crucible without exposure to the ambient atmosphere. The essential elements of the present molten metal handling system are a pump and heated conduits to carry the molten metal to the casting station.
    Type: Grant
    Filed: June 6, 1985
    Date of Patent: January 13, 1987
    Assignee: The Dow Chemical Company
    Inventor: Hugh C. Behrens
  • Patent number: 4633930
    Abstract: There is described a device and process for delivering a predetermined quantity of molten metal to a metal casting operation via metal transfer members, such as thermally heated pipes under a positive head to the shot size and delivery system wherein the device has a metal receiving chamber, a hydraulic ram for metal movement and an inert gas sweep capability. The ram chambers has only a nominal relationship to the volume of metal to be used to fill the mold, the true measurement of the volume being a factor of the pressure of the molten metal being delivered to the chamber and the time the molten metal is allowed to flow into the chamber before the ram is activated to force the metal under a definite predetermined pressure into the mold cavity.
    Type: Grant
    Filed: June 11, 1985
    Date of Patent: January 6, 1987
    Assignee: The Dow Chemical Company
    Inventor: Hugh C. Behrens
  • Patent number: 4617200
    Abstract: There is disclosed a process for the preparation of substantially uniform granules of magnesium coated with a mixed salt composition from a eutectic melt. The process comprises the steps of forming globules of magnesium by shear action in a molten eutectic mixed salt bath which is maintained molten at a temperature of at last ten degrees Centrigrade below the freezing temperature of the magnesium.
    Type: Grant
    Filed: June 6, 1985
    Date of Patent: October 14, 1986
    Assignee: The Dow Chemical Company
    Inventor: Hugh C. Behrens