Patents by Inventor Charles A. Barefoot

Charles A. Barefoot 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: 5220841
    Abstract: An electromagnetic fluid flow transducer formed from an electromagnetic assembly having two electromagnet units and a tubular flow contact assembly to measure fluid flow velocity and fluid volume in ionic solutions. Each electromagnet unit includes a core and a winding on the core, and a housing maintains the electromagnet units and their cores and windings in a predetermined relationship with each other. A plurality of electrode receptacles are formed in the housing proximate the flux field created by the electromagnetic assembly. The tubular flow contact assembly includes a tubular member, and four conductive electrodes positioned in and extending from the internal surface of the tubular member where fluid flow occurs.
    Type: Grant
    Filed: December 12, 1990
    Date of Patent: June 22, 1993
    Assignee: Carolina Medical Electronics, Inc.
    Inventors: Samuel D. Brown, Charles A. Barefoot, Charles R. Jones, Larry S. Stanley