Patents by Inventor Tapio Haring

Tapio Haring 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).

  • Method and apparatus for measuring bearing currents in an electrical machine
    Patent number: 8587325
    Abstract: The present disclosure relates to a measuring bearing currents in an electrical machine. According to exemplary embodiments, radio frequency signals that are generated by electric discharges are detected by an antenna near the bearing. A synchronizing signal is combined with the origin of the bearing current and signal triggered by the synchronizing signal is measured.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: November 19, 2013
    Assignee: ABB Oy
    Inventors: Jari Pekola, Tapio Haring, Petri Mäki-Ontto
  • METHOD AND APPARATUS FOR MEASURING BEARING CURRENTS IN AN ELECTRICAL MACHINE
    Publication number: 20110169504
    Abstract: The present disclosure relates to a measuring bearing currents in an electrical machine. According to exemplary embodiments, radio frequency signals that are generated by electric discharges are detected by an antenna near the bearing. A synchronizing signal is combined with the origin of the bearing current and signal triggered by the synchronizing signal is measured.
    Type: Application
    Filed: January 18, 2011
    Publication date: July 14, 2011
    Applicant: ABB OY
    Inventors: Jari PEKOLA, Tapio Haring, Petri Mäki-Ontto
  • Squirrel-cage induction motor
    Patent number: 5903081
    Abstract: The present invention relates to a squirrel-cage induction motor for frequency converter use, in particular, which squirrel-cage induction motor comprises a stator, a stator winding arranged in its axial grooves, divided into at least two coil groups for each phase of the supplying alternating current and connected to the supplying alternating current in such a manner that the sum of basic frequency groove currents is substantially zero at each moment. In accordance with the invention, one half of the coil groups of each phase is connected to the supplying alternating current at one end of the stator and the other half of the coil groups of each phase at the other end of the stator.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: May 11, 1999
    Assignee: ABB Motors Oy
    Inventors: Tapio Haring, Jarkko Iisakkala