Patents by Inventor Keith E. Daniels

Keith E. Daniels 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).

  • Ball valve lockout mechanism
    Patent number: 5143114
    Abstract: A lockout mechanism for holding a ball valve in a closed condition for prolonged periods, e.g. while machinery that is supplied with pressurized fluid through the valve is being subjected to maintenance operations. The lockout mechanism indirectly provides a safety feature for the workman while he is working on the machinery.
    Type: Grant
    Filed: February 25, 1991
    Date of Patent: September 1, 1992
    Assignee: GTE Valenite Corporation
    Inventor: Keith E. Daniels