Patents by Inventor Ralph G. Beer

Ralph G. Beer 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).

  • Telescopic ventline
    Patent number: 6669552
    Abstract: An apparatus and method for ventilating tunnels and other confined spaces. The apparatus includes a telescopic ventline assembly. The telescopic ventline assembly includes a plurality of tubes wherein each inner tube or first intermediate tube is slidably disposed within an second intermediate tube or an outer tube, in a telescoping type arrangement. One method involves constructing a ventilation system that includes a plurality of ventline assemblies. Another method involves using the telescopic ventline to ventilate a tunnel or other confined space, e.g., a mine.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: December 30, 2003
    Inventor: Ralph G. Beer