TREA

Donald G. Gruett

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  • Manitowoc, WI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Piston and drive assembly for use in a pump
    • Patent number 6,164,924
    • Issue date Dec 26, 2000
    • Oil-Rite Corporation
    • Donald G. Gruett
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Single-piece piston for use in a pneumatically-activated pump
    • Patent number 6,071,097
    • Issue date Jun 6, 2000
    • Oil-Rite Corporation
    • Donald G. Gruett
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Single-piece piston with central bore for use in a pneumatically-ac...
    • Patent number 5,984,652
    • Issue date Nov 16, 1999
    • Oil-Rite Corporation
    • Donald G. Gruett
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Fluid injector pump with interchangeable reservoir
    • Patent number 5,961,299
    • Issue date Oct 5, 1999
    • Oil-Rite Corporation
    • Donald G. Gruett
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Air tool lubricator
    • Patent number 5,638,920
    • Issue date Jun 17, 1997
    • Oil-Rite Corporation
    • Donald G. Gruett
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Apparatus for dispensing a liquid on a remote object
    • Patent number 5,253,984
    • Issue date Oct 19, 1993
    • Oil-Rite Corporation
    • Donald G. Gruett
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Lubricant metering valve
    • Patent number 4,577,728
    • Issue date Mar 25, 1986
    • Oil-Rite Corporation
    • Donald G. Gruett
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Filter assembly with shut off and filter element therefor
    • Patent number 4,529,514
    • Issue date Jul 16, 1985
    • Oil-Rite Corporation
    • Donald G. Gruett
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Oiler assembly
    • Patent number 4,034,831
    • Issue date Jul 12, 1977
    • Oil-Rite Corporation
    • Donald G. Gruett
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES