Patents by Inventor Kevin L. Vaughters

Kevin L. Vaughters 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).

  • Transmission shuttle shift deceleration method
    Patent number: 5353662
    Abstract: A powershift transmission includes a plurality of clutches, including a final or directional set of clutches. The clutches are controlled by electro-hydraulic direct acting valves and two electro-hydraulic proportional or pressure modulating valves. The pressure modulating valves modulate the pressure supplied to the direct acting valves associated with the three directional clutches. Vehicle deceleration during a shuttle shift is achieved by releasing (unpressurizing) all clutches, then gradually pressurizing only two clutches in the final or directional set.
    Type: Grant
    Filed: January 29, 1993
    Date of Patent: October 11, 1994
    Assignee: Deere & Company
    Inventor: Kevin L. Vaughters