Patents by Inventor James R. Deppisch

James R. Deppisch 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).

  • Common vent device for positive vent pressure and draft hood equipped gas appliances
    Patent number: 4768444
    Abstract: A vent device is provided for common venting of exhaust gases discharged from separate apparatus at different vent pressures. The vent device provides a passageway and exhaust gas inlets for combining the exhaust gases and conveying them to a single vent stack. The higher vent pressure exhaust gases are discharged within the passageway using a venturi or jet pump effect to provide a zone of reduced pressure in the passageway for inducing the flow of the lower vent pressure exhaust gases into the device.
    Type: Grant
    Filed: September 23, 1987
    Date of Patent: September 6, 1988
    Assignee: Gas Research Institute
    Inventors: Douglas W. DeWerth, James R. Deppisch, Sherwood G. Talbert, Ronald A. Cudnik