Patents by Inventor Lex A. Mellot

Lex A. Mellot 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).

  • Four-wheel drive assist for electric machines
    Patent number: 6892846
    Abstract: A four-wheel drive assist for electric machines includes an electric drive system for driving wheels at a non-steering end and a selectively operable hydraulic system for driving wheels at a steering end. A controller controls the operation of the drive system according to operator selection and/or by detecting slipping of the electric drive system. Preferably, at least one hydraulically driven operating arm, including boom functions, lift platform, etc., is driven by the same hydraulic pump that drives the steering end hydraulic system. The machine thus is capable of effecting four-wheel drive when necessary, while operating as efficiently as a conventional two-wheel drive full electric machine when the four-wheel drive system is not engaged.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: May 17, 2005
    Assignee: JLG Industries, Inc.
    Inventors: Lex A. Mellot, Ignacy Puszkiewicz
  • Four-wheel drive assist for electric machines
    Publication number: 20040074687
    Abstract: A four-wheel drive assist for electric machines includes an electric drive system for driving wheels at a non-steering end and a selectively operable hydraulic system for driving wheels at a steering end. A controller controls the operation of the drive system according to operator selection and/or by detecting slipping of the electric drive system. Preferably, at least one hydraulically driven operating arm, including boom functions, lift platform, etc., is driven by the same hydraulic pump that drives the steering end hydraulic system. The machine thus is capable of effecting four-wheel drive when necessary, while operating as efficiently as a conventional two-wheel drive full electric machine when the four-wheel drive system is not engaged.
    Type: Application
    Filed: December 9, 2002
    Publication date: April 22, 2004
    Inventors: Lex A. Mellot, Ignacy Puszkiewicz