Patents by Inventor Willem J. Van Leeuwen

Willem J. Van Leeuwen 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).

  • Patent number: 4898167
    Abstract: The system includes a remote variable volume bellows that is pumped by the rescuers weight, a suction collection option, an oxygen enrichment venturi valve, and a face mask AIDS Protector Valve that is opened and closed by the rescuer's hand. The system, in its normal configuration, allows for a rescuer to pump ventilation air through an air delivery tube into a valve and through the valve into the face mask and lungs of a victim. The pump is a variable volume spring loaded bellows that works for either an infant, child or adult. It can utilize a venturi tube oxygen connector that insures that maximum supplemental oxygen is fed into the air delivery tube. It also has a pressure relief valve to insure that excess pressure is not placed on the victims lungs. When ventilating, an air delivery tube connects to a valve which is opened or closed by the rescuer placing a hand over the exhaust port. This valve can be used by itself, but it has optional inserts for improved performance.
    Type: Grant
    Filed: May 13, 1988
    Date of Patent: February 6, 1990
    Assignee: Pakam Data Systems Inc.
    Inventors: Richard S. Pierce, Willem J. Van Leeuwen