Patents by Inventor William R. Wenrich

William R. Wenrich 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).

  • Smoke generator for firefighting trainers utilizing a metering venturi
    Patent number: 5367603
    Abstract: A smoke generator wherein vaporative properties of a liquid smoke agent are activated by a heated air flow through a venturi with the vacuum created in the metering venturi controlling the flow of smoke producing liquid to the heated air. The smoke generator includes an air compressor, a heater, a metering venturi, a side venturi pipe, a smoke fluid reservoir, and a support.
    Type: Grant
    Filed: April 13, 1993
    Date of Patent: November 22, 1994
    Assignee: Symtron Systems, Inc.
    Inventors: William R. Wenrich, James J. Ernst