Patents by Inventor Holger Hasselmann

Holger Hasselmann 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: 10175066
    Abstract: A system for detecting the absolute rotational angle of a shaft rotatable more than one revolution includes a drive wheel connected to the shaft to rotate therewith. The drive wheel includes measurement sectors adjacent to one another in a circumferential direction. First and second driven wheels are engaged to the drive wheel. First and second sensors monitor rotational positions of the driven wheels to thereby detect an absolute rotational angle of the shaft. A third sensor monitors a relative angular position of the shaft in relation to a detected one of the measurement sectors to thereby detect the relative angular position of the shaft within one revolution of the shaft. The detected absolute rotational angle of the shaft is refined with the detected relative angular position of the shaft to thereby generate the absolute rotational angle of the shaft with more precision.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: January 8, 2019
    Assignee: Leopold Kostal GmbH & Co. KG
    Inventors: Martin Deitmerg, Marco Rutkowski, Stefan Garneyer, Christian Schirp, Oliver Maier, Klaus Hirschfeld, Bernd vom Hedt, Sven Kober, Holger Hasselmann, Stefan Schroeder
  • Publication number: 20120119731
    Abstract: A system for detecting the absolute rotational angle of a shaft rotatable more than one revolution includes a drive wheel connected to the shaft to rotate therewith. The drive wheel includes measurement sectors adjacent to one another in a circumferential direction. First and second driven wheels are engaged to the drive wheel. First and second sensors monitor rotational positions of the driven wheels to thereby detect an absolute rotational angle of the shaft. A third sensor monitors a relative angular position of the shaft in relation to a detected one of the measurement sectors to thereby detect the relative angular position of the shaft within one revolution of the shaft. The detected absolute rotational angle of the shaft is refined with the detected relative angular position of the shaft to thereby generate the absolute rotational angle of the shaft with more precision.
    Type: Application
    Filed: December 28, 2011
    Publication date: May 17, 2012
    Applicant: LEOPOLD KOSTAL GMBH & CO. KG
    Inventors: Martin Deitmerg, Marco Rutkowski, Stefan Garneyer, Christian Schirp, Oliver Maier, Klaus Hirschfeld, Bernd vom Hedt, Sven Kober, Holger Hasselmann, Stefan Schroeder