Patents by Inventor Ray E. Harwood

Ray E. Harwood 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).

  • Apparatus for cleaning sub-surface electrical enclosures and the like
    Patent number: 5547514
    Abstract: An apparatus mounted on a vehicle frame for cleaning liquids and solids from a sub-surface enclosure. The apparatus comprises a water tank having a drain valve and a feed valve. A water pump is connected to the feed valve that supplies water to a high pressure cleaning device used for loosening waste solids in the sub-surface enclosure. A suction pump connected to a suction hose removes the waste from the sub-surface enclosure and directs it to either of two waste tanks through a valve configuration comprising an inlet valve connected to one waste tank and a second inlet valve connected to the other waste tank. The two inlet valves selectively allow the waste removed from the sub-surface enclosure to enter either the first waste tank, the second waste tank or both. A method for cleaning the sub-surface enclosure is also provided.
    Type: Grant
    Filed: September 28, 1994
    Date of Patent: August 20, 1996
    Assignee: Pacific Gas and Electric Company
    Inventors: Stephen W. Ward, Ray E. Harwood