Patents by Inventor Jacques G. M. du Parc

Jacques G. M. du Parc 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: 4489373
    Abstract: Non-dissipative snubber for a D.C. power switching circuit comprising a main inductance connected in series with a load, a controlled switch, an inductance, and a D.C. voltage source. The snubber includes a branch circuit including a capacitor, a first diode, and an auxiliary inductance in series, mounted in parallel across the switch, with one terminal of the capacitor directly connected to the junction of the switch and the main inductance. The other terminal of the capacitor is connected through a second diode to a point of constant potential having a value about half that withstood by the switch. The snubber permits the use of a capacitor of lower voltage rating than heretofore required.
    Type: Grant
    Filed: December 8, 1982
    Date of Patent: December 18, 1984
    Assignee: Societe Nationale Industrielle Aerospatiale
    Inventor: Jacques G. M. du Parc