Patents by Inventor Norbert J. Hodapp

Norbert J. Hodapp 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).

  • Method of insulating conduit
    Patent number: 4218814
    Abstract: An elongate flexible tubular sheath has a longitudinal slit therethrough from end to end. The sheath is placed over a conduit, having an outside diameter not smaller than the inside diameter of the sheath. Subsequently, the sheath is tightened about the conduit and the edges of the slit forced together in response to helical twisting of the sheath. Means are provided for retaining the sheath in the helically twisted position.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: August 26, 1980
    Assignee: Dart Industries Inc.
    Inventor: Norbert J. Hodapp