where one member rotates and both members are allowed to orbit or wobble

Patents Grantslast 30 patents

  • Information Patent Grant

    Eccentric screw pump for the conveying of liquids from bore holes

    • Patent number 4,580,955
    • Issue date Apr 8, 1986
    • Joh. Heinrich Bornemann GmbH & Co. KG
    • Volkmar Karge
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2545626

    • Patent number 2,545,626
    • Issue date Mar 20, 1951
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    2532145

    • Patent number 2,532,145
    • Issue date Nov 28, 1950
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    2525265

    • Patent number 2,525,265
    • Issue date Oct 10, 1950
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents