Patents by Inventor Erick C. V. Keldmann

Erick C. V. Keldmann 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: 4679617
    Abstract: A ceiling or wall unit comprises a plurality of juxtaposed aluminum plates, whereby one rim of each plate is optionally inserted in a groove of an abutting plate. According to the invention, each aluminum plate is provided with at least one cooling pipe shaped integral with the plate, inner longitudinal ribs being provided in the cooling pipe. In this manner the plate can be used for cooling a room, the temperature of which is too high on account of the outdoor temperature or heat-producing machines, the lighting or like equipment. The inner longitudinal ribs of the cooling pipes increase the inner surface of the cooling pipes whereby the dimensions of the pipes and consequently of the plates can be correspondingly reduced.
    Type: Grant
    Filed: February 6, 1985
    Date of Patent: July 14, 1987
    Assignee: Elpan, Aps
    Inventor: Erick C. V. Keldmann