Patents by Inventor Vernon McGary

Vernon McGary 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).

  • Pilot control relay valve apparatus
    Patent number: 4559970
    Abstract: An improved pilot control relay valve is disclosed to monitor pressure conditions in a pressurized system and to cause the system to shut down in response to detection of operating pressures excessive of an acceptable pressure range. Accurate monitoring is provided for by dual-piston action, with one of the pistons actuating a visual indicator mounted on the slide valve of the control relay valve, and with the second piston coaxially mounted within the first piston.
    Type: Grant
    Filed: November 16, 1983
    Date of Patent: December 24, 1985
    Assignee: C.S.E. Automation Engineering Services, Inc.
    Inventors: Donald K. Taylor, William Rogers, Vernon McGary, Peter Lenart