Patents by Inventor Robert D. Knutson

Robert D. Knutson 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).

  • Operator protection for high pressure hose machines
    Patent number: 4944258
    Abstract: An operator protection device for use in connection with the operation of a sewer and/or catch basin cleaner containing a pressurized water hose, wherein the device comprises a first protective enclosure portion and a second enclosure member comprising a tubular sleeve of tough, flexible material slidably containing an exposed portion of the pressurized hose for protection of the lower extremities of an operator in the event of hose rupture or disconnection of a coupling member used to join sections of the pressurized water hose, and for ease in access and visiblity to the sewer and/or catch basin.
    Type: Grant
    Filed: April 17, 1989
    Date of Patent: July 31, 1990
    Assignee: Super Products Corporation
    Inventors: Robert D. Knutson, Bruce Boczkiewicz, James C. Wurster