Patents by Inventor Andrew Hatcher

Andrew Hatcher 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).

  • Variable rate ride control
    Patent number: 6167701
    Abstract: A variable rate ride control is disclosed and adapted to control the ride of a machine having varying load conditions. The variable rate ride control system includes an accumulator arrangement selectively connectable to an actuator arrangement of the machine. The accumulator arrangement has a variable pressure rate so that the accumulator arrangement can adapt to varying load conditions.
    Type: Grant
    Filed: July 6, 1998
    Date of Patent: January 2, 2001
    Assignee: Caterpillar Inc.
    Inventors: Andrew Hatcher, Patrick Quinn