Patents by Inventor Umberto Filippini

Umberto Filippini 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).

  • Control device for a valve actuator
    Patent number: 4135661
    Abstract: In a control device such as a valve actuator, the improvement comprises means for indicating the number of revolutions undergone by the valve actuator. The rotatable valve actuator drives a plurality of spaced-apart shafts which are geared to each other in suitable driving ratios with each shaft carrying an indicator to indicate the angular position of that shaft. The combination of indicators provides an indication of the number of revolutions by the valve actuator. Means can also be provided to operate one or more sets of electrical contacts when a predetermined digital indication is reached.
    Type: Grant
    Filed: March 19, 1976
    Date of Patent: January 23, 1979
    Assignee: Nuovo Pignone S.p.A.
    Inventors: Umberto Filippini, Pierluigi Bianchini