Patents by Inventor Mark J. Mayefske

Mark J. Mayefske 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).

  • Publication number: 20200305341
    Abstract: A riding lawn equipment engine speed control module has user actuated buttons that may be used to select from a plurality of operating modes, each mode having a different non-overlapping range of engine speeds; specify an engine speed within each mode; and continuously increase or decrease engine speed within each mode.
    Type: Application
    Filed: March 29, 2019
    Publication date: October 1, 2020
    Inventors: MARK J. MAYEFSKE, RYAN J. GLOVER, KEVIN ZWIEG, Jesse A. Braun, Matthew Slaughter
  • Patent number: 10696260
    Abstract: A multiple pivot rollover protection structure includes a pair of primary pivot assemblies and a pair of shipping pivot assemblies. The primary pivot assemblies provide a plurality of different operating positions for the upper ROPS legs, and a generally vertical shipping configuration for the upper ROPS legs extending downwardly alongside and not behind a rear mounted engine. The shipping pivot assemblies provide a generally vertical operating position for each of the intermediate ROPS legs and a generally horizontal shipping configuration for each of the intermediate ROPS legs extending rearwardly alongside and not behind the rear mounted engine. A spring loaded plunger is engageable between each upper ROPS leg and intermediate ROPS leg. A latch may be provided between each of the upper ROPS legs and the intermediate ROPS legs to hold the spring loaded plunger in a disengaged position.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: June 30, 2020
    Assignee: DEERE & COMPANY
    Inventors: Mark J. Mayefske, Kyle T. Ressler, Matthew E. Herzmann, Dan Knight
  • Publication number: 20190126876
    Abstract: A multiple pivot rollover protection structure includes a pair of primary pivot assemblies and a pair of shipping pivot assemblies. The primary pivot assemblies provide a plurality of different operating positions for the upper ROPS legs, and a generally vertical shipping configuration for the upper ROPS legs extending downwardly alongside and not behind a rear mounted engine. The shipping pivot assemblies provide a generally vertical operating position for each of the intermediate ROPS legs and a generally horizontal shipping configuration for each of the intermediate ROPS legs extending rearwardly alongside and not behind the rear mounted engine. A spring loaded plunger is engageable between each upper ROPS leg and intermediate ROPS leg. A latch may be provided between each of the upper ROPS legs and the intermediate ROPS legs to hold the spring loaded plunger in a disengaged position.
    Type: Application
    Filed: October 30, 2017
    Publication date: May 2, 2019
    Inventors: Mark J. Mayefske, Kyle T. Ressler, Matthew E. Herzmann, Dan Knight
  • Publication number: 20130263582
    Abstract: A split flow exhaust deflector for a grass moving machine such as a ZTR mower includes a sheet metal body mounted to a lower surface of a muffler of an internal combustion engine, spaced from the lower surface of the muffler to form a pair of channels through which exhaust gasses from the engine pass from the muffler and substantially outwardly through the pair of channels to a pair of locations adjacent a left side surface and a right side surface of the muffler.
    Type: Application
    Filed: April 10, 2012
    Publication date: October 10, 2013
    Inventor: Mark J. Mayefske