Patents by Inventor Volkmar Karge

Volkmar Karge 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: 4580955
    Abstract: Disclosed is an eccentric screw pump for conveying liquids from bore holes, in particular oil well bores. The pump includes an eccentric screw, a stator associated with the screw and located at the lowest point of a riser, and an aboveground drive and bearing unit, the drive shaft of which is connected with a rod linkage by means of a rotating joint which transmits torque and axial force. The rotor is suspended from the rod linkage. For the installation of several conveying units in series and/or of reserve units, several separate stators vertically aligned with each other may be built into the riser and/or several rotors may be placed above each other in the linkage.
    Type: Grant
    Filed: December 10, 1984
    Date of Patent: April 8, 1986
    Assignee: Joh. Heinrich Bornemann GmbH & Co. KG
    Inventor: Volkmar Karge