Patents by Inventor Richard G. Mathwig

Richard G. Mathwig 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).

  • Solar energy heat exchanger and method for making same
    Patent number: 4085491
    Abstract: A fluted strip of heat conducting material is spirally wound edgewise about a length of pipe and, in combination, define a heat exchanger for receiving solar energy. The lateral edges of the flutes forming the outer edge of the strip define an undulating line superimposed upon a helix. The lateral edges of the flutes forming the inner edge of the strip define an undulating line superimposed upon a sinusoidal curve which, in turn, is superimposed upon a helix. Thereby, cyclically repetitive ones of the flutes become oriented normal to the rays of the sun to effect maximum heat transfer as the angle of incidence to the heat exchanger varies. A method for producing the heat exchanger is also described.
    Type: Grant
    Filed: March 1, 1976
    Date of Patent: April 25, 1978
    Inventor: Richard G. Mathwig