Patents by Inventor Costantino Vinciguferra

Costantino Vinciguferra 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).

  • Key for operating ball valves
    Patent number: 4480814
    Abstract: A rectangular steel key on the control stem for operating the cast iron ball of a ball valve, wherein the key is provided with two large cylindrical steel joint pieces which are idly fitted onto the two ends of the key, and which are inserted into corresponding cylindrical cavities in the seat present in the pivot of the ball.
    Type: Grant
    Filed: August 26, 1982
    Date of Patent: November 6, 1984
    Assignee: Nuovo Pignone S.p.A.
    Inventor: Costantino Vinciguferra