Patents by Inventor Robert D. Dunbar

Robert D. Dunbar 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: 10681867
    Abstract: A zero turning radius mower park brake system includes an over-center pivot member that pivots to a park brake engaged position in response to moving a control arm fully outward, and to a park brake disengaged position in response to moving the control arm fully inward. The control arm is disconnected from the over-center pivot member in the park brake engaged and disengaged positions. An actuator on a lower end of the control arm may contact the over-center pivot member between the park brake engaged and disengaged positions. A biasing spring urges the over-center pivot member to the park brake engaged position and park brake disengaged position.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: June 16, 2020
    Assignee: DEERE & COMPANY
    Inventors: Robert D. Dunbar, Jaimie Pelino, Frank M. Welz
  • Patent number: 10588256
    Abstract: A ZTR mower adjustable toe board includes a one piece sheet metal plate having a rear portion releasably engaged to a cross member extending between left and right longitudinal frame members of a ZTR mower at a plurality of different fore and aft positions. A plurality of tabs may extend rearwardly from the rear portion, each tab having two bends for inserting and securing it in any of a plurality of slots in the cross member. The plate may include an upwardly inclined front portion positioned over a front frame member and resiliently abutting the front frame member at the plurality of different fore and aft positions. A plurality of foot pegs may be mounted to the upwardly inclined front portion.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: March 17, 2020
    Assignee: DEERE & COMPANY
    Inventors: Sebastian Baena, Ivan Jesus Lopez, Robert D. Dunbar, Wesley E. Clontz
  • Publication number: 20190274251
    Abstract: A zero turning radius mower park brake system includes an over-center pivot member that pivots to a park brake engaged position in response to moving a control arm fully outward, and to a park brake disengaged position in response to moving the control arm fully inward. The control arm is disconnected from the over-center pivot member in the park brake engaged and disengaged positions. An actuator on a lower end of the control arm may contact the over-center pivot member between the park brake engaged and disengaged positions. A biasing spring urges the over-center pivot member to the park brake engaged position and park brake disengaged position.
    Type: Application
    Filed: March 8, 2018
    Publication date: September 12, 2019
    Inventors: Robert D. Dunbar, Jaimie Pelino, Frank M. Welz
  • Publication number: 20190098830
    Abstract: A ZTR mower adjustable toe board includes a one piece sheet metal plate having a rear portion releasably engaged to a cross member extending between left and right longitudinal frame members of a ZTR mower at a plurality of different fore and aft positions. A plurality of tabs may extend rearwardly from the rear portion, each tab having two bends for inserting and securing it in any of a plurality of slots in the cross member. The plate may include an upwardly inclined front portion positioned over a front frame member and resiliently abutting the front frame member at the plurality of different fore and aft positions. A plurality of foot pegs may be mounted to the upwardly inclined front portion.
    Type: Application
    Filed: October 3, 2017
    Publication date: April 4, 2019
    Inventors: Sebastian Baena, Ivan Jesus Lopez, Robert D. Dunbar, Wesley E. Clontz