Patents by Inventor Fulvio Filippini

Fulvio 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).

  • Patent number: 4335336
    Abstract: A function generator (25) receives the signal (svm) representing the speed of rotation of a motor (13) and works out EN=CN+f (vm), f (vm) being a single-valued and monotonic function of the real speed vm of the motor and CN being worked out by computer means (24) so that: CN=EN-f (VM), VM being the nominal value of the speed of rotation of the motor. The latter is fed by a signal which is a function of EN. The reference information f (VM)=IC is worked out from an item of error information which is a function of the deviation between the real speed (vb) and reference speed (vp) of a tape (10) driven by the motor, the rate of variation of IC having a maximum value limited in absolute value.The device is suitable for subordinating the rate of travel of a tape carrying sound to the frequency of a pilot signal.
    Type: Grant
    Filed: May 21, 1980
    Date of Patent: June 15, 1982
    Assignee: Enertec
    Inventor: Fulvio Filippini