Patents by Inventor Domenico Vivian

Domenico Vivian 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).

  • Double selectable delivery pump
    Patent number: 4874298
    Abstract: The double delivery pump comprises an impeller with double direction of rotation contained in a body connected to an axial intake conduit and defining a cylindrical seat connected to two tangential rectilinear ducts leading into a distribution seat containing a distribution element. The distribution element can slide in the distribution seat and defines shutters which can cutoff one or the other of two delivery conduits connected to the opposite ends of the distribution seat.
    Type: Grant
    Filed: March 7, 1988
    Date of Patent: October 17, 1989
    Assignee: Nuova Sme S.p.A.
    Inventors: Bruno Mainardi, Domenico Vivian