Patents by Inventor Donald R. Gilbert

Donald R. Gilbert 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).

  • Diver tow compressor unit
    Patent number: 4348976
    Abstract: A floating vessel that is propelled through the water by means of a water pump towing a diver or divers to a desired location, and then converting to an air-pump that delivers air through hoses to divers below. The hull is of fiberglass construction, and designed to be self-righting and water tight. The unit is powered by a three to five horsepower gasoline engine.
    Type: Grant
    Filed: March 11, 1980
    Date of Patent: September 14, 1982
    Inventor: Donald R. Gilbert