Patents by Inventor Romano Gnagnetti

Romano Gnagnetti 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).

  • Rotary expansible chamber device with eccentric rotor assembly including a flexible band
    Patent number: 4456442
    Abstract: A pump consisting in a rotor (3) realized like a housing, placed in an outer housing (2), inside the rotor a cylindrical element (6) coaxially connected thereto by means of an elastic band (23) forming lobate chambers (13,14) between the rotor and the cylindrical element (6). Inside the cylindrical element (6) a solid cylindrical element (9) with a head (10) flared in the shape of a hexagon is rotating inserted, said cylindrical element (9) engaging with an hexagonal pin (11) fixed in an eccentric position on the closing part (12) of the pump. Thus an eccentric rotation of the cylindrical element (6) is caused and, consequently, the compression and the expansion of the chambers for the expulsion and the suction of the liquid (FIG. 1).
    Type: Grant
    Filed: June 4, 1981
    Date of Patent: June 26, 1984
    Inventor: Romano Gnagnetti