Patents by Inventor Dan E. Mitchell

Dan E. Mitchell 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).

  • Underwater breathing apparatus
    Patent number: 4674493
    Abstract: A floating apparatus for providing pressurized air to a submerged swimmer. A container is sealed and waterproofed so that it will float on the surface of the water and has an inlet above the water and an outlet below the water. The outlet is adapted to be coupled to a hose which will provide air to the submerged swimmer. The inside of the container houses a pump which couples the inlet to the outlet and forces pressurized air through the outlet. The pump is driven by an electric motor within the container.
    Type: Grant
    Filed: June 23, 1986
    Date of Patent: June 23, 1987
    Inventor: Dan E. Mitchell