Patents by Inventor John Demmer

John Demmer 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).

  • Heat exchange assembly for swimming pool
    Patent number: 4406278
    Abstract: A heat exchange assembly comprises a solar heat collector panel adapted to be mounted on a portable support. The panel includes a rigid frame portion, an upper planar surface portion, a bottom planar surface portion and a planar, continuous tubular coil formed by a single, continuous tubular coil formed by a single, continuous tube member disposed between the upper and bottom surface portions. The upper planar surface portion includes a sheet of solar ray penetrating material and the bottom surface portion includes a sheet of rigid backing material. The rigid frame portion extends around the entire periphery of the panel to define the outer profile thereof. The rigid frame portion includes a channel which receives the outer edges of the upper sheet of solar ray penetrating material and the bottom, rigid backing sheet with the tubular coil disposed therebetween to fix the sheet of solar ray penetrating material, the tubular coil and the bottom surface portion into a unitary structural configuration.
    Type: Grant
    Filed: March 31, 1981
    Date of Patent: September 27, 1983
    Inventor: John Demmer
  • Solar collector for a swimming pool
    Patent number: D271129
    Type: Grant
    Filed: March 31, 1981
    Date of Patent: October 25, 1983
    Inventor: John Demmer