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Leonard J. Sieghartner

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  • Coal Valley, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Rotary seal assembly having grooved seal facing
    • Patent number 5,934,683
    • Issue date Aug 10, 1999
    • Roy E. Roth Company
    • Leonard J. Sieghartner
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Hermetically sealed magnetic drive pump
    • Patent number 5,525,039
    • Issue date Jun 11, 1996
    • Roy E. Roth Company
    • Leonard J. Sieghartner
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Regenerative turbine flow inducer for double or tandem mechanical s...
    • Patent number 5,238,253
    • Issue date Aug 24, 1993
    • Roy E. Roth Company
    • Leonard J. Sieghartner
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Floating self-centering turbine impeller
    • Patent number 5,137,418
    • Issue date Aug 11, 1992
    • Roy E. Roth Company
    • Leonard J. Sieghartner
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Multi-stage pump
    • Patent number 4,479,756
    • Issue date Oct 30, 1984
    • Roy E. Roth Company
    • Leonard J. Sieghartner
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Multi-stage pumps
    • Patent number 4,299,536
    • Issue date Nov 10, 1981
    • Roy E. Roth Company
    • Leonard J. Sieghartner
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Centrifugal impellers
    • Patent number 4,248,571
    • Issue date Feb 3, 1981
    • Roy E. Roth Company
    • Leonard J. Sieghartner
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Centrifugal impellers
    • Patent number 4,178,131
    • Issue date Dec 11, 1979
    • Roy E. Roth Company
    • Leonard J. Sieghartner
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Floating seals
    • Patent number 4,173,350
    • Issue date Nov 6, 1979
    • Roy E. Roth Company
    • Leonard J. Sieghartner
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Deformable seal for rotary mechanism
    • Patent number 4,155,559
    • Issue date May 22, 1979
    • Leonard J. Sieghartner
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Multi-stage pump
    • Patent number 3,963,371
    • Issue date Jun 15, 1976
    • Roy E. Roth Company
    • Leonard J. Sieghartner
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...