Patents by Inventor Virginia Krapil

Virginia Krapil 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).

  • Exhalation valve for respiratory circuit
    Patent number: 5020532
    Abstract: A valve for the expiratory tubing of a ventilator circuit. The valve assembly includes a valve body, diaphragm, top cap and control tubing. The valve body includes a valve seat, annular surface, sealing ribs, along with other annular members. The diaphragm includes a thick center portion, connected by a thin web to a relatively thick annular rim and surrounding flange. The top cap includes a compression ring which clamps the diaphragm annular flange to the valve annular surface. In the valve open position, the valve body supports the diaphragm only at the diaphragm flange.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: June 4, 1991
    Assignee: Baxter International Inc.
    Inventors: Michael R. Mahoney, Wayne H. Nieman, Douglas J. McDowell, Virginia Krapil