Patents by Inventor Karl W. Dienstuhl

Karl W. Dienstuhl 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).

  • Tool for deforming a plurality of groove defining flanges against insulating bars in the grooves
    Patent number: 4213236
    Abstract: Two elongated metallic profiles each formed with two pairs of flanges each of which forms a longitudinally extending groove are positioned with the two grooves of each profile parallel and opening toward the two grooves of another such profile. An elongated bar of insulating material having a pair of longitudinally extending sides is fitted between each groove of each profile and the corresponding groove of the other profile. This forms a longitudinally extending passage defined on two opposite sides by the two insulating bars and on the other two sides by the two profiles. A tool is displaced through this passage so as plastically and permanently to deform the inner flanges outwardly and into intimate tight contact with the bars.
    Type: Grant
    Filed: December 8, 1978
    Date of Patent: July 22, 1980
    Assignees: Otto Fuchs KG, Schuco Heinz Schurmann GmbH & Co.
    Inventors: Manfred Diels, Karl W. Dienstuhl, Tilo Jager, Eitel Hocker
  • Method of making insulated construction element
    Patent number: 4194284
    Abstract: Two elongated metallic profiles each formed with two pairs of flanges each of which forms a longitudinally extending groove are positioned with the two grooves of each profile parallel and opening toward the two grooves of another such profile. An elongated bar of insulating material having a pair of longitudinally extending sides is fitted between each groove of each profile and the corresponding groove of the other profile. This forms a longitudinally extending passage defined on two opposite sides by the two insulating bars and on the other two sides by the two profiles. A tool is displaced through this passage so as plastically and permanently to deform the inner flanges outwardly and into intimate tight contact with the bars.
    Type: Grant
    Filed: January 24, 1978
    Date of Patent: March 25, 1980
    Assignees: Otto Fuchs KG, Schuro Heinz Schurmann GmbH & Co.
    Inventors: Manfred Diels, Karl W. Dienstuhl, Tilo Jager, Eitel Hocker