Patents by Inventor Michiel J. Duncker

Michiel J. Duncker 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: 4454864
    Abstract: Solar collector comprising a closed housing of mainly rectangular cross-section, a collector thermally connected to the housing for converting solar rays into heat, a working fluid which, during operation, is partly liquid and partly gaseous, an evaporation space within the housing, a condensation space within the housing, an internal connection between said spaces, and a heat exchanger. An intensive thermal contact between the heat exchanger and the working fluid is obtained by providing the condensation space with a wall profiled inwardly of the housing and forming a space substantially shut off from the surrounding atmosphere, the space being positioned within the outer boundary of the housing but outside the internal portion thereof, and by disposing the heat exchanger within the space and in thermal contact with the wall.
    Type: Grant
    Filed: January 22, 1981
    Date of Patent: June 19, 1984
    Assignee: Akzo N.V.
    Inventors: Michiel J. Duncker, Johan R. Kreetz