Patents by Inventor Brad K. McCunn

Brad K. McCunn 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).

  • Patent number: 6223113
    Abstract: In machines having electro-hydraulic transmission controls, it is desirable to ensure that in the event of an electrical malfunction or power failure the transmission responds appropriately. In the subject invention, a system is provided in a transmission which in the event of an individual clutch solenoid fault (short-to-battery, short-to-ground, and open circuit fault) keeps the machine in gear and protects the transmission from damage. A short-to-battery fault will allow shifting to an available gear that utilizes the faulted clutch. If there is a short-to-ground or open circuit fault then the transmission will latch the current gear or shift to a predetermined gear that does not utilize a faulted clutch.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: April 24, 2001
    Assignee: Caterpillar Inc.
    Inventors: Brad K. McCunn, Gregory A. Menke, Kevin G. Meyer