Patents by Inventor David Patrick BALGAARD

David Patrick BALGAARD 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).

  • Ultra-low-loss transmission brake utilizing a dual-solenoid electro-mechanical actuator
    Patent number: 9657791
    Abstract: An actuator is provided for preventing rotation of a rotary component and includes a first pawl pivotable about a first pivot axis and engageable with the rotary component for preventing rotation of the rotary component in a first rotary direction. A second pawl is pivotable about a second pivot axis and engageable with the rotary component for preventing rotation of the rotary component in a second rotary direction opposite the first rotary direction. The pawls are each biased toward an engaged position with the rotary component by a pawl spring. A first and a second solenoid each include an electrically activated solenoid and an armature movable from a first position for holding the pawls out of engagement with the rotary component to a second position for allowing the pawls to be engaged with the rotary component.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: May 23, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Anthony J. Corsetti, Nicholas Kokotovich, David Patrick Balgaard
  • Ultra-Low-Loss Transmission Brake Utilizing A Dual-Solenoid Electro-Mechanical Actuator
    Publication number: 20160265609
    Abstract: An actuator is provided for preventing rotation of a rotary component and includes a first pawl pivotable about a first pivot axis and engageable with the rotary component for preventing rotation of the rotary component in a first rotary direction. A second pawl is pivotable about a second pivot axis and engageable with the rotary component for preventing rotation of the rotary component in a second rotary direction opposite the first rotary direction. The pawls are each biased toward an engaged position with the rotary component by a pawl spring. A first and a second solenoid each include an electrically activated solenoid and an armature movable from a first position for holding the pawls out of engagement with the rotary component to a second position for allowing the pawls to be engaged with the rotary component.
    Type: Application
    Filed: March 12, 2015
    Publication date: September 15, 2016
    Inventors: Anthony J. CORSETTI, Nicholas KOKOTOVICH, David Patrick BALGAARD