Patents by Inventor Robert Champiau

Robert Champiau 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).

  • Device for detecting cutoff and short circuit defects in at least one electrical circuit portion
    Patent number: 4890183
    Abstract: The invention relates to a device for detecting cutoff and short circuit defects in at least one electrical circuit portion. The detecting device (10) is intended to verify a circuit portion (11) connected to the terminals of a source of direct current (T1) and including a passive element (E, r) interposed between two switch devices (P, Q) comprises on the one hand four differential amplifiers (AD1, AD2, AD3 and AD4) each having one of their inputs connected to the common terminal (F) of the passive element (E, r) and to the first switch device (P) and their other input connected to a reference potential (V3 or V.sub.
    Type: Grant
    Filed: May 2, 1989
    Date of Patent: December 26, 1989
    Assignee: Bull S.A.
    Inventor: Robert Champiau