Patents Assigned to Powerlung, Inc.
  • Pulmonary exercise device
    Patent number: 6726598
    Abstract: A pulmonary exercise device includes a tubular body with an air inlet, an air outlet and a mouthpiece. The air inlet is closed by a one-way valve arrangement which is resiliently biased using a spring. The air outlet is closed by a one-way valve arrangement which is resiliently biased closed by using a spring. In another aspect, the inlet and outlet are closed off by respective one way valves which prevent airflow in one direction and allow only a restricted flow in the other.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: April 27, 2004
    Assignee: Powerlung, Inc.
    Inventors: Barry M. F. Jarvis, Carolyn E. Morse