Patents by Inventor Robert H. Elkins

Robert H. Elkins 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: 4333524
    Abstract: A heat exchanger and process having multiple fluidized beds for heat exchange between two gas streams of different temperatures. The apparatus and process provides a compact high efficiency warm air furnace especially adapted for energy conservation for the heating of modern highly insulated residential buildings by gas fired furnaces of relatively low rated gas input.
    Type: Grant
    Filed: February 9, 1981
    Date of Patent: June 8, 1982
    Assignee: Southern California Gas Company
    Inventors: Robert H. Elkins, Gary M. Durkin, Robert A. Macriss
  • Patent number: 4249594
    Abstract: A heat exchanger and process having multiple fluidized beds for heat exchange between two gas streams of different temperatures. The apparatus and process provides a compact high efficiency warm air furnace especially adapted for energy conservation for the heating of modern highly insulated residential buildings by gas fired furnaces of relatively low rated gas input.
    Type: Grant
    Filed: February 28, 1979
    Date of Patent: February 10, 1981
    Assignee: Southern California Gas Company
    Inventors: Robert H. Elkins, Gary M. Durkin, Robert A. Macriss
  • Patent number: 4075313
    Abstract: A process for the production of hydrogen and oxygen from water comprising the steps of forming ferric chloride from ferriferrous oxide by reaction with a chloride ion yielding substance, thermally reducing the ferric chloride to produce ferrous chloride, reducing the ferrous chloride to metallic iron, then oxidizing the metallic iron with water so as to produce hydrogen. The metallic iron may be formed by reducing the ferrous compound with hydrogen. Two specific reactant regenerative closed cycle systems are disclosed utilizing the process of this invention for the production of hydrogen and oxygen.
    Type: Grant
    Filed: March 18, 1976
    Date of Patent: February 21, 1978
    Assignee: American Gas Association
    Inventors: Jon B. Pangborn, John C. Sharer, Robert H. Elkins
  • Patent number: 3998942
    Abstract: A process for the production of hydrogen and oxygen from water comprising the steps of forming ferric chloride from ferriferrous oxide by reaction with a chloride ion yielding substance, reducing the ferric chloride produced with a reducing agent to produce ferrous chloride, thermally reducing the ferric chloride to produce ferrous chloride, then oxidizing either the ferrous compound or metallic iron with water so as to produce hydrogen. The metallic iron may be formed by reducing the ferrous compound with hydrogen. Four specific reactant regenerative closed cycle systems are disclosed utilizing the process of this invention for the production of hydrogen with high energy efficiencies.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: December 21, 1976
    Assignee: American Gas Association, Inc.
    Inventors: Jon B. Pangborn, John C. Sharer, Robert H. Elkins