Patents by Inventor Kjeld Appel

Kjeld Appel 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).

  • Submersible pump unit
    Patent number: 8262369
    Abstract: A submersible pump unit having a wet-running electric motor and only a single impeller can be driven by the electric motor with a rotation speed greater than 20,000 rpm. The rotor of the electric motor has a diameter of less than 25 mm.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: September 11, 2012
    Assignee: Grundfos Management a/s
    Inventors: Kjeld Appel, Eigil D. Andersen, Jan Harding Gliemann, Christian Rasmussen
  • Submersible motor
    Patent number: 7915775
    Abstract: A submersible motor is provided for the drive of a submersible pump, with a rotor (6, 10) which is mounted in the motor housing (2) via a thrust bearing (16). The thrust bearing (16) includes a stationary bearing ring (34) on whose first axial side a thrust bearing surface is situated and whose opposite second axial side (40) has a spherical curvature. The second axial side of the bearing ring (34) bears on a correspondingly spherically curved, annular abutment surface (42) of a bearing carrier (44).
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: March 29, 2011
    Assignee: Grundfos Managements a/s
    Inventor: Kjeld Appel
  • Submersible Motor
    Publication number: 20090267435
    Abstract: A submersible motor is provided for the drive of a submersible pump, with a rotor (6, 10) which is mounted in the motor housing (2) via a thrust bearing (16). The thrust bearing (16) includes a stationary bearing ring (34) on whose first axial side a thrust bearing surface is situated and whose opposite second axial side (40) has a spherical curvature. The second axial side of the bearing ring (34) bears on a correspondingly spherically curved, annular abutment surface (42) of a bearing carrier (44).
    Type: Application
    Filed: February 27, 2009
    Publication date: October 29, 2009
    Applicant: GRUNDFOS MANAGEMENT A/S
    Inventor: Kjeld APPEL
  • SUBMERSIBLE PUMP UNIT
    Publication number: 20090010783
    Abstract: A submersible pump unit having a wet-running electric motor and only a single impeller can be driven by the electric motor with a rotation speed greater than 20,000 rpm. The rotor of the electric motor has a diameter of less than 25 mm.
    Type: Application
    Filed: August 3, 2006
    Publication date: January 8, 2009
    Applicant: GRUNDFOS MANAGEMENT A/S
    Inventors: Kjeld Appel, Eigil D. Andersen, Jan Harding Gliemann, Christian Rasumssen