Patents by Inventor Edgar W. Powers

Edgar W. Powers 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).

  • Patent number: 4243177
    Abstract: A chimney heat capturing system comprises a chimney shell (10) having a relatively large chimney passage (20) and a flue liner (12) comprising a plurality of standardized individual liner units (28 b, c, d, and e) anchored in the chimney passage. The liner units are stacked on one another and are spaced from the chimney shell by anchor brackets (26). Each of the liner units (28 b, c, d, and e) includes outer and inner casings (30 and 32) separated by spacers for defining a heat capturing space between them. In one embodiment, each of the units is closed at its ends, and in another embodiment some of the adjacent units have open ends to communicate the heat capturing spaces of adjacent units and thereby form independent heat capturing spaces (54) defined by more than one unit.
    Type: Grant
    Filed: December 8, 1978
    Date of Patent: January 6, 1981
    Inventor: Edgar W. Powers