Patents by Inventor Harald MITTERMAIER

Harald MITTERMAIER 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).

  • Aircraft propeller drive system
    Patent number: 10780989
    Abstract: An aircraft propeller drive system has a gear to be driven by an engine and having a first plurality of teeth. A torsion bar has a first end driven by the gear and a second end rotatable relative to the first end about a torsion axis by a torsion angle. An output shaft is driven by the second end and is adapted for connection to a propeller. A clutch has a driven member rotationally fixed to the output shaft and a driving member having a second plurality of teeth. The first and second pluralities of teeth engage each other when a variation in the torsion angle from a mean torsion angle is greater than a predetermined angle. Torque is transferred between the gear and the output shaft via the clutch when the first and second pluralities of teeth engage each other.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: September 22, 2020
    Assignee: BRP-ROTAX GMBH & CO. KG
    Inventors: Harald Mittermaier, Johann Bayerl, Michael Dopona, Thomas Baumgartner
  • AIRCRAFT PROPELLER DRIVE SYSTEM
    Publication number: 20180016021
    Abstract: An aircraft propeller drive system has a gear to be driven by an engine and having a first plurality of teeth. A torsion bar has a first end driven by the gear and a second end rotatable relative to the first end about a torsion axis by a torsion angle. An output shaft is driven by the second end and is adapted for connection to a propeller. A clutch has a driven member rotationally fixed to the output shaft and a driving member having a second plurality of teeth. The first and second pluralities of teeth engage each other when a variation in the torsion angle from a mean torsion angle is greater than a predetermined angle. Torque is transferred between the gear and the output shaft via the clutch when the first and second pluralities of teeth engage each other.
    Type: Application
    Filed: July 28, 2017
    Publication date: January 18, 2018
    Inventors: Harald MITTERMAIER, Johann BAYERL, Michael DOPONA, Thomas BAUMGARTNER
  • Aircraft propeller drive system
    Patent number: 9745074
    Abstract: An aircraft propeller drive system has a gear to be driven by an engine and having a first plurality of teeth. A torsion bar has a first end driven by the gear and a second end rotatable relative to the first end about a torsion axis by a torsion angle. An output shaft is driven by the second end and is adapted for connection to a propeller. A clutch has a driven member rotationally fixed to the output shaft and a driving member having a second plurality of teeth. The first and second pluralities of teeth engage each other when a variation in the torsion angle from a mean torsion angle is greater than a predetermined angle. Torque is transferred between the gear and the output shaft via the clutch when the first and second pluralities of teeth engage each other.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: August 29, 2017
    Assignee: BRP-POWERTRAIN GMBH & CO KG
    Inventors: Harald Mittermaier, Johann Bayerl, Michael Dopona, Thomas Baumgartner
  • AIRCRAFT PROPELLER DRIVE SYSTEM
    Publication number: 20170088283
    Abstract: An aircraft propeller drive system has a gear to be driven by an engine and having a first plurality of teeth. A torsion bar has a first end driven by the gear and a second end rotatable relative to the first end about a torsion axis by a torsion angle. An output shaft is driven by the second end and is adapted for connection to a propeller. A clutch has a driven member rotationally fixed to the output shaft and a driving member having a second plurality of teeth. The first and second pluralities of teeth engage each other when a variation in the torsion angle from a mean torsion angle is greater than a predetermined angle. Torque is transferred between the gear and the output shaft via the clutch when the first and second pluralities of teeth engage each other.
    Type: Application
    Filed: September 30, 2015
    Publication date: March 30, 2017
    Inventors: Harald MITTERMAIER, Johann BAYERL, Michael DOPONA, Thomas BAUMGARTNER