Patents Assigned to The John Bunn Company
  • Portable low profile DC oxygen concentrator
    Patent number: 4826510
    Abstract: A portable PSA device having a combination of features including a demand device to thereby limit the necessary size of the PSA unit itself; an improved spring loaded bed to permit horizontal use, and an arrangement of parts overall to produce a low profile, low center of gravity compact unit particularly suitable for use in automobiles and of sufficiently low power demand to be powered by the cigarette lighter socket of automobiles.
    Type: Grant
    Filed: January 13, 1988
    Date of Patent: May 2, 1989
    Assignee: The John Bunn Company
    Inventor: Norman R. McCombs
  • Flow controller
    Patent number: 4784130
    Abstract: An oxygen flow controller for use in administering oxygen from a pressure-regulated source on demand to a patient through a nasal cannula is disclosed. A flow path is opened by a solenoid valve in response to the negative pressure created in the nasal canula by the patient's inhalation. The valve is opened for the interval needed to maintain an inhalation to exhalation ration of one-to-two, and the timing cycle and the open and closed duration times of the valve are made to automatically match the patient's breathing.
    Type: Grant
    Filed: December 4, 1986
    Date of Patent: November 15, 1988
    Assignee: The John Bunn Company
    Inventors: Franklin D. Kenyon, John W. Puckhaber