Patents by Inventor David Brawner

David Brawner 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).

  • Portable electronic spirometer
    Patent number: 7063669
    Abstract: A spirometer having a housing with an elongated flow chamber open at one end, a pressure sensing end opposite the open end and an outlet passageway intercepting the flow chamber at an angle ? and proximate the pressure sensing end. A differential pressure sensor is coupled to the pressure sensing end from a port at an angle ? to an axis of the flow chamber. The angle ? is substantially greater than 0° but substantially less than 180° while the angle ? may range from 90° to 180°, such that a significantly increased measured air pressure results over that measured when ?=180° and ?=90°.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: June 20, 2006
    Assignee: Dynamic MT AG
    Inventors: David Brawner, Christopher Hegarty
  • Portable electronic spirometer
    Publication number: 20030216659
    Abstract: A spirometer having a housing with an elongated flow chamber open at one end, a pressure sensing end opposite the open end and an outlet passageway intercepting the flow chamber at an angle &agr; and proximate the pressure sensing end. A differential pressure sensor is coupled to the pressure sensing end from a port at an angle &bgr; to an axis of the flow chamber. The angle &agr; is substantially greater than 0° but substantially less than 180° while the angle &bgr; may range from 90° to 180°, such that a significantly increased measured air pressure results over that measured when &agr;=180° and &bgr;=90°.
    Type: Application
    Filed: July 15, 2002
    Publication date: November 20, 2003
    Inventors: David Brawner, Christopher Hegarty