Patents by Inventor Adolfo Papi

Adolfo Papi 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: 4873421
    Abstract: A liquid-filled electric radiator has a rectangular, vertically disposed radiator body with an upper horizontal distribution duct connected to a lower horizontal collection duct by a plurality of vertical connecting ducts within the radiator body. An angularly bent uniform cross section pipe has its free ends connected to the upper and lower ducts at diagonally opposite positions on the radiator body and includes a first section arranged parallel and level with the lower duct in series with a second section parallel to a vertical side of the radiator body. An electric immersion heater housed in the first section heats the liquid filling the ducts, vessel and pipe for circulation through the radiator body and pipe and is controlled by a thermostat positioned in a casing arranged at the lower corner of the radiator body and protected from radiation from the radiator body by a partition protruding from the casing.
    Type: Grant
    Filed: October 27, 1986
    Date of Patent: October 10, 1989
    Assignee: AB Fellingsbro Verkstader
    Inventors: Roland Brehmer, Adolfo Papi