Patents by Inventor John K. Bethune

John K. Bethune 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).

  • Cover for pond used to collect solar radiation
    Patent number: 5555877
    Abstract: A cover for withstanding stormy weather and increasing solar heating of a body of water is disposed over the surface of the water. The cover is more transparent to visible radiation from the sun than to infrared radiation, and is anchored and sealed around its periphery over the surface of the body of water. Means are provided for reducing the pressure between the bottom of the cover and the top of the water to subatmospheric, and for flooding the top surface of the cover with a layer of water, and draining the layer of water from the top of the cover.
    Type: Grant
    Filed: April 16, 1993
    Date of Patent: September 17, 1996
    Assignee: George S. Lockwood
    Inventors: George S. Lockwood, John K. Bethune, Andrew W. Lockwood