Patents by Inventor Kent A. Kupferschmid

Kent A. Kupferschmid 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).

  • Control system for diverting oil from a clutch
    Patent number: 5988335
    Abstract: A control system diverts cooling and/or lubricating fluid from a selected one of a plurality of fluid actuated clutches in a transmission in response to the transmission being in a selected gear ratio. A diverter valve is placed between a source of cooling and/or lubricating fluid and the selected one of the fluid actuated clutches and operative to divert fluid therefrom in response to the transmission being placed in the selected gear ratio. A sensor arrangement is operative to sense the transmission gear ratio and deliver a signal to condition the diverter valve.
    Type: Grant
    Filed: June 2, 1998
    Date of Patent: November 23, 1999
    Assignee: Caterpillar Inc.
    Inventors: Kent A. Kupferschmid, Rick A. Laylock, Timothy F. Nusz, Daniel J. Whiting