Patents by Inventor Romano Ballada

Romano Ballada 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).

  • Electrical apparatus for differential current protection
    Patent number: 5309311
    Abstract: An electrical apparatus for magnetothermal and differential protection, of the type comprising a device for sensing differential currents associated with a magnetothermal protection switch, comprises a differential current sensor connected to an input of a controlled gain signal amplifier, in turn connected to a plurality of light indicators arranged to go on progressively in dependence on the sensor. The apparatus provides a quantitative and qualitative measurement of the stray current.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: May 3, 1994
    Assignee: Bassani Ticino S.p.A.
    Inventor: Romano Ballada
  • Electrical apparatus for magnetothermal and differential protection
    Patent number: 4851950
    Abstract: An electrical apparatus for magnetothermal and differential protection, of the type comprising a device for sensing differential currents associated with a magnetothermal protection switch, comprises a differential current sensor connected to an input of a controlled gain signal amplifier, in turn connected to a plurality of light indicators arranged to go on progressively in dependence on the sensor. The apparatus provides a quantitative and qualitative measurement of the stray current.
    Type: Grant
    Filed: May 31, 1988
    Date of Patent: July 25, 1989
    Assignee: Bassani Ticino, S.p.A.
    Inventor: Romano Ballada