Patents by Inventor Gian Guido Ravellini

Gian Guido Ravellini 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).

  • Device for hydraulically actuating winches in a pipe-laying machine
    Patent number: 6164627
    Abstract: The actuating device, in particular for a pipe-laying machine, according to the present invention comprises a first winch (4) and a second winch (5) for respectively operating a movable gripping element along a side arm of said machine and the side arm itself. A main oil-hydraulic circuit (1a) is also provided for actuating a first hydraulic motor (6) and a second hydraulic motor (7) respectively associated with said first winch (4) and with said second winch (5), said first hydraulic motor (6) comprising a friction clutch (14) actuated by a secondary oil-hydraulic circuit (1b) for controlled free descent.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: December 26, 2000
    Assignee: VER. POMP. di Felloni Vincenza
    Inventor: Gian Guido Ravellini