Patents by Inventor Elvio Tonus

Elvio Tonus 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).

  • Dishwasher with discharge pump and nonreturn valve
    Patent number: 5131432
    Abstract: A dishwasher with a wash tub (3) connected on the bottom to a collection well (4) into which extends the outlet duct (8) of a discharge pump (6) fitted with a nonreturn valve (11) accessible from the inside of the wash tub. The valve consists of a box-like housing (12) made in one piece with the outlet duct (8) which, in turn, is made in one piece with the well (4). The valve (11) has a flat flexible-membrane plug (18) with a tail (19) hooked to a peg (21) made in one piece with the box-like body (12). A protrusion (22) of the cover (13) for the box-like body (12) is in contact with the peg (21) to block the membrane (18) in position.
    Type: Grant
    Filed: December 13, 1991
    Date of Patent: July 21, 1992
    Assignee: Zanussi Elettrodomestici S.p.A.
    Inventors: Gianni Santarossa, Elvio Tonus