Patents by Inventor Fred Trackwell

Fred Trackwell 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: 5516119
    Abstract: This invention involves an apparatus for vapor containment and recirculation for use in fluid systems, including pumps and valves. More specifically, this invention provides a closed loop recirculation system for ensuring that vapor does not escape from fluid systems. The invention comprises a vapor containment gland comprising a vapor channel; a suction manifold attached to the vapor containment gland and comprising a suction channel, a fluid injection channel, and a suction nozzle bore; a suction nozzle insertable in said suction nozzle bore and comprising a flow channel in fluid communication with said fluid injection channel and said suction channel; and a fluid injection recirculation line attachable to said suction nozzle.
    Type: Grant
    Filed: February 8, 1994
    Date of Patent: May 14, 1996
    Assignee: Environmental Seals & Services, Inc.
    Inventors: Fred Trackwell, Joe King