Patents by Inventor Enrico Greco

Enrico Greco 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).

  • In-tank fluid filter with valve assembly
    Patent number: 6217755
    Abstract: The filter head and filter housing define a liquid flow inlet path, a first liquid flow outlet path, and a second liquid flow outlet path. A filter media construction is positioned within the housing. The filter media construction, in combination with the housing, defines an unfiltered liquid volume, and a filtered liquid volume. A first liquid flow inlet path directs liquid from the liquid flow inlet to the unfiltered liquid volume. A first liquid flow outlet path directs liquid flow from the filtered liquid volume to the first liquid flow outlet. A second liquid flow outlet path directs liquid flow from the filtered liquid volume to the second liquid flow outlet. A first valve assembly selectively opens the second liquid flow path to passage of liquid therethrough in response to a first selected liquid pressure level within the filtered liquid volume.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: April 17, 2001
    Assignee: Donaldson Company, Inc.
    Inventors: Jack Stifelman, Johan Fobe, Angelo Schiavon, Enrico Greco