Patents by Inventor Bruce A. Heyer

Bruce A. Heyer 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).

  • Foundry practices
    Patent number: 4424853
    Abstract: A base metal or alloy in the molten state is further alloyed with readily oxidizable elements in an alloying chamber containing a non-oxidizing protective atmosphere, whereupon a plugged hole in the alloying chamber is opened to allow the alloy to flow into a mold cavity also previously filled with a non-oxidizing atmosphere; consequently, the easily oxidized alloy is cast in the absence of atmospheric oxygen.
    Type: Grant
    Filed: January 6, 1983
    Date of Patent: January 10, 1984
    Assignee: Abex Corporation
    Inventors: Igor Y. Khandros, Bruce A. Heyer
  • Austenitic-manganese steel
    Patent number: 4425169
    Abstract: Fine grained austenite achieved in (12%) manganese steel, without annealing, by a novel combination of carbon and aluminum.
    Type: Grant
    Filed: April 26, 1982
    Date of Patent: January 10, 1984
    Assignee: Abex Corporation
    Inventors: Dilip K. Subramanyam, Henry J. Chapin, Bruce A. Heyer
  • Heat resistant alloy castings
    Patent number: 4236921
    Abstract: A heat resistant ferrous metal alloy casting having improved resistance to thermal fatigue and comprising chromium, nickel, cobalt, tungsten and titanium.
    Type: Grant
    Filed: March 2, 1979
    Date of Patent: December 2, 1980
    Assignee: Abex Corporation
    Inventors: Bruce A. Heyer, Donald L. Huth
  • Erosion and corrosion resistant alloys containing chromium, nickel and molybdenum
    Patent number: 4080198
    Abstract: A cast iron alloy of about (% by weight) 1.6 carbon, 2 nickel, 2 molybdenum, 28 chromium and up to 1 copper, balance iron, and characterized by chromium and molybdenum carbides dispersed in an austenitic matrix.
    Type: Grant
    Filed: February 24, 1977
    Date of Patent: March 21, 1978
    Assignee: Abex Corporation
    Inventors: Bruce A. Heyer, Howard S. Avery
  • Iron-chromium-nickel heat resistant castings
    Patent number: 4077801
    Abstract: Castings of carbon 0.25/0.8, nickel 8/62, chromium 12/32, tungsten 0.05/2, titanium 0.05/1, balance iron (substantially) of austenitic microstructure, essentially free of cobalt and molybdenum, and not requiring heat treatment to develop service properties considerably improved compared to standard ACI alloy grades.
    Type: Grant
    Filed: August 15, 1977
    Date of Patent: March 7, 1978
    Assignee: Abex Corporation
    Inventors: Bruce A. Heyer, Donald L. Huth