Patents by Inventor Carroll M. Grigsby

Carroll M. Grigsby 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).

  • Remote shifter for vehicle transmissions
    Patent number: 4137824
    Abstract: Primary switches in bus cab, for instance, activate contacts in secondary switch group in rear transmission compartment to energize solenoids selectively pressurizing opposed cylinders to drive transmission shift operation to various positions.
    Type: Grant
    Filed: January 31, 1977
    Date of Patent: February 6, 1979
    Assignee: Scovill Manufacturing Company
    Inventors: Richard G. Boutell, Carroll M. Grigsby