Patents by Inventor Gilbert B. Carlson

Gilbert B. Carlson 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: 5421904
    Abstract: New nozzles and methods for cleaning debris from drain pipes are disclosed. In one embodiment, the present nozzle comprises a nozzle body including a peripheral sidewall having a plurality of spaced apart peripheral through holes positioned to cause fluid from the interior space defined by the nozzle body to pass through the peripheral through holes in a direction substantially perpendicular to the longitudinal axis of the nozzle body. In addition, the nozzle body preferably includes a distal end wall having at least one longitudinal through hole positioned to cause fluid from the internal space to flow through the longitudinal through hole in a direction substantially parallel to the longitudinal axis of the nozzle body.
    Type: Grant
    Filed: January 7, 1994
    Date of Patent: June 6, 1995
    Inventor: Gilbert B. Carlson