Patents by Inventor William Allen Doerner

William Allen Doerner 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).

  • Cascaded two-fluid rotary closed Rankine cycle engine
    Patent number: 4070862
    Abstract: A cascaded, two-fluid, rotary Rankine cycle engine is provided having improved efficiency and being capable of operating with a power fluid which is solid at ambient temperature.
    Type: Grant
    Filed: September 24, 1976
    Date of Patent: January 31, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: William Allen Doerner, Oral R. Van Buskirk
  • Regenerator for rotary Rankine cycle engines
    Patent number: 4009576
    Abstract: A regenerator for rotary Rankine cycle engines having an annular boiler and an internal coaxial expander for pressure vapor generated in the boiler, comprising at least one annular series of axially extending heat exchange tubes disposed radially inward of the boiler and an array of axially spaced annular fins on each of said tubes which rotate with the engine. A condenser for the exhaust vapor rotates with the engine and means is provided for conducting exhaust vapor to the condenser after passing through the regenerator fins and for returning liquid condensate from the condenser to the regenerator for passage through the tubes thereof in heat exchange relation with the exhaust vapor conveyed between the fins on the tubes.
    Type: Grant
    Filed: December 4, 1975
    Date of Patent: March 1, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: William Allen Doerner, Oral R. Van Buskirk