Patents by Inventor Keith C. Cathey

Keith C. Cathey 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: 5971746
    Abstract: A dual pressure gas supply controller system is disclosed which provides apparatus and methods for supplying gas from a gas supply source to one or more gas-burning apparatus requiring two different gas pressure levels. According to the invention, a first gas pressure is supplied the gas-burning apparatus during a first time period, while a second lower gas pressure is supplied to the gas-burning apparatus during a second time period for the purpose of conserving gas. This is accomplished through the use of first and second gas pressure regulators coupled in parallel between the gas supply source and the gas-burning apparatus. A gas pressure control valve is utilized to stop the flow of gas from the first gas pressure regulator and enable the flow of gas from the second gas pressure regulator during the second time period.
    Type: Grant
    Filed: September 2, 1998
    Date of Patent: October 26, 1999
    Assignee: Arkla
    Inventors: William A. Givens, Geoffrey R. Ford, Davonna L. Ridley, Keith C. Cathey