Patents Assigned to Asthma International Research Limited
  • Expiratory flow measuring device
    Patent number: 5413112
    Abstract: A device for measuring the maximum flow rate of a single forced expiration, comprises an elongated hollow body with inlet and outlet ends, a vane mounted to a shaft and rotatable within the body from a defined rest position, and an indicator to indicate maximum displacement of the vane from its rest position. The vane is shaped such that airflow from the inlet end past the vane causes the vane to rotate away from the rest position with the plane of rotation preferably being at about 90.degree. to the airflow through the elongated body.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: May 9, 1995
    Assignee: Asthma International Research Limited
    Inventors: Murray L. Jansen, Donald E. Killick, Alexander Lang, Royce T. Pullman, Christopher M. Sutton, Cornelis H. Zwaaneveld