Patents by Inventor Robert J. Eisbrenner

Robert J. Eisbrenner 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: 5199720
    Abstract: A totally split mechanical face seal being installable and replaceable without necessitating breakdown of the shaft and/or housing. The inventive split seal is well suited for replacement of packing or stuffing in heavy duty or inaccessible locations. The inventive seals include a sealing element that seals the primary ring against the shaft and rigidly positions the primary ring in the axial, circumferential and radial directions, and also includes a sealing element which seals the mating ring against the housing and non-rigidly positions the mating ring in the axial direction while simultaneously providing an axial biasing force on the mating ring to provide mating contact of the two rings.
    Type: Grant
    Filed: December 10, 1991
    Date of Patent: April 6, 1993
    Assignee: John Crane, Inc.
    Inventors: Jon J. Radosav, Thomas A. Evans, David M. Dudek, Russell G. Wieser, Brian J. Atwater, Robert J. Eisbrenner
  • Patent number: 5114163
    Abstract: A totally split mechanical face seal being installable and replaceable without necessitating breakdown of the shaft and/or housing. The inventive split seal is well suited for replacement of packing or stuffing in heavy duty or inaccessible locations. The inventive seals include a sealing element that seals the primary ring against the shaft and rigidly positions the primary ring in the axial, circumferential and radial directions, and also includes a sealing element which seals the mating ring against the housing and non-rigidly positions the mating ring in the axial diection while simultaneously providing an axial biasing force on the mating ring to provide mating contact of the two rings.
    Type: Grant
    Filed: May 25, 1990
    Date of Patent: May 19, 1992
    Assignee: John Crane Inc.
    Inventors: Jon J. Radosav, Thomas A. Evans, David M. Dudek, Russell G. Wieser, Brian J. Atwater, Robert J. Eisbrenner