Patents by Inventor Mario Carbonaro

Mario Carbonaro 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).

  • Tool equipped with a percussive device
    Patent number: 4275794
    Abstract: The invention relates to a tool which incorporates a device insuring the efficient control of a percussive hammer, regardless of the drilling depth. For this purpose, drive sludge arriving in an annular space reaches an inlet of a fluid switching element of single or double stability in which the flow of fluid alternates between two fluid circuits, causing the hammer to strike and return.
    Type: Grant
    Filed: July 31, 1978
    Date of Patent: June 30, 1981
    Assignee: Compagnie Francaise des Petroles
    Inventor: Mario Carbonaro