Patents by Inventor Mark Wayne Glassford

Mark Wayne Glassford 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).

  • All wheel drive for motor grades
    Patent number: 6508328
    Abstract: A full hydrostatic transmission is used as part of an all wheel drive system of a motorgrader. Each front wheel includes its own drive system comprising a pump, a hydraulic motor and a bypass valve. The bypass valve protects the motor automatically from cavitation conditions and allows the hydrostatic transmission avoid hydrostatic braking.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: January 21, 2003
    Assignee: Champion Road Machinery Limited
    Inventors: David John Kenyon, Mark Wayne Glassford