Patents by Inventor Christian Gruene

Christian Gruene 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).

  • Process for producing a spacer for the tubes of a heat exchanger
    Patent number: 4979665
    Abstract: A process of manufacturing a spacer element for spaced heat exchange tubes of a heat exchanger in which the tubes are of elliptical cross section and arranged in rows and columns. In the process a band of stranded interwoven fine wires are wound between and on the surfaces of the spaced heat exchange tubes and is fused to the tubes at the regions of contact therewith by a heating operation to form a spacer for holding the tubes in spaced relation. The heating operation can be carried out by heating the tubes and band in an oven, either in a vacuum or with a protective gas.
    Type: Grant
    Filed: August 10, 1989
    Date of Patent: December 25, 1990
    Assignee: MTU Motoren- und Turbinen-Union Munchen GmbH
    Inventors: Christian Gruene, Karl Maier