Patents by Inventor Jon Fleagle

Jon Fleagle 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).

  • Automatic leveling and synchronization system for counterweight removal and installation
    Patent number: 6050430
    Abstract: The automatic leveling and synchronization system for raising and lowering a counterweight includes at least a primary and secondary cylinder connected in series hydraulic communication. The primary cylinder includes a first rod connected to a first piston, and the first rod is attached to one end of a counterweight. The secondary cylinder includes a second rod connected to a second piston, and the second rod is attached to another end of the counterweight. A surface area of a bottom of the second piston is set equal to a surface area of a top of the first piston.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: April 18, 2000
    Assignee: Grove U.S. L.L.C.
    Inventors: Jon Fleagle, David Young