Patents by Inventor Charles Frederick Roark

Charles Frederick Roark 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).

  • Combination solar collector and heat exchanger
    Patent number: 4084580
    Abstract: A solar collector is provided with parallel spaced glass or plastic windows with a hermetic seal for the space between them, the inner window being spaced from a collector plate having a heat exchanger plate contiguous with the back, unlighted side of the collector plate. A pump provides circulation of absorber fluid in the collector plate and exchanger plate, while another pump provides circulation of a utilization fluid through the exchanger plate to the exterior of the assembly.
    Type: Grant
    Filed: July 28, 1976
    Date of Patent: April 18, 1978
    Inventor: Charles Frederick Roark