Patents by Inventor Domenico Piazzetta

Domenico Piazzetta 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).

  • Fireplace-heater with full recovery of hot air
    Patent number: 4558688
    Abstract: An improved, full hot air recovery, fireplace-heater is disclosed, wherein the flue gases are forced to follow obliged paths through exchange chambers before being exhausted to the outside. The fireplace comprises a hearth and a plurality of chambers for the circulation of flue gases, which are serially arranged one another on the exterior of the hearth and surrounded by an outer chamber for the circulation of ambient air where the flue gas heat is recovered by exchange at walls. Also provided is a means for forcing the circulation of ambient air through the chamber.
    Type: Grant
    Filed: August 15, 1983
    Date of Patent: December 17, 1985
    Assignee: Piazzetta S.p.A.
    Inventor: Domenico Piazzetta
  • Fireplace for heating indoor spaces and water for sanitary use
    Patent number: 4436079
    Abstract: An improved fireplace for heating indoor spaces and sanitary water comprises a hearth whereon wood can be burned such as to define a heat source, and, adjacent the hearth, an air circulating space and a sanitary hot water generating heat exchanger.
    Type: Grant
    Filed: June 15, 1981
    Date of Patent: March 13, 1984
    Inventor: Domenico Piazzetta