Patents by Inventor Ronnald J. Funk

Ronnald J. Funk 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).

  • Graphite packing
    Patent number: 5299812
    Abstract: A fluid valve graphite packing assembly with graphite packing rings and thin PTFE disc rings surrounding an operating valve member. Softer graphite packing rings on the interior are bounded by progressively harder graphite packing rings. A PTFE disc ring is inserted between the graphite packing rings. The packing is subjected to sufficient packing stress to cause the PTFE disc rings to extrude onto the operating valve member. A laminated packing ring formed of alternating sheets of flexible graphite and PTFE which is die cut to provide a crown shaped cross-section aiding in enabling PTFE extrusion to enhance valve operating member lubrication and sealing.
    Type: Grant
    Filed: December 15, 1992
    Date of Patent: April 5, 1994
    Assignee: Fisher Controls International, Inc.
    Inventors: Ronald R. Brestel, Ronnald J. Funk, William C. Scheffert, Wilbur D. Hutchens, Virgil W. Pepper, Frank E. Jensen