Patents by Inventor Fritz F. Klein

Fritz F. Klein 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).

  • Electronically controlled pulmonary ventilator
    Patent number: 4011866
    Abstract: Apparatus for effecting automatic inhalation and exhalation by human or animal recipients of air and/or other gases through a tube from a constant pressure gas reservoir by providing in the tube a venting solenoid valve close to the recipient and controlled by an astable multivibrator timer for opening and closing the valve in accordance with the recipient's breathing time schedule, the time being located remotely to the valve and in convenient monitoring relation to an attendant.
    Type: Grant
    Filed: August 26, 1968
    Date of Patent: March 15, 1977
    Assignee: Automatic Breathing Apparatus Co., Inc.
    Inventors: Fritz F. Klein, Oliver C. Morse, III