Patents by Inventor Pierre Andre

Pierre Andre 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).

  • Method and apparatus for regulating the internal pressure of a ventilated, closed space subjected to variations in external pressure
    Patent number: 5984773
    Abstract: A regulating apparatus and a regulating method for regulating the internal pressure P.sub.i of a ventilated, closed volume subjected to variations in external pressure P.sub.e, the apparatus including at least two compensation circuits enabling the intake air flow rate q.sub.1 and the extraction air flow rate q.sub.2 to be adjusted in real time so that the difference between these two flow rates algebraically compensates for the leakage flow rate q.sub.f, and maintains the internal pressure P.sub.i inside the volume at a constant level.
    Type: Grant
    Filed: July 22, 1997
    Date of Patent: November 16, 1999
    Assignee: GEC Alsthom Transport SA
    Inventors: Yves Gervais, Gilles Mariaux, Gerard Mineaud, Alain Guinot, Pierre Andre
  • Work-post console for semi automatic machines
    Patent number: 4101084
    Abstract: Semi automatic machines such as relay coil winders are mounted in cabins arranged in a semi circle around an operator position. Each machine is normally closed inside its cabin during automatic operation, but is caused to leave its cabin and move towards the operator when it needs manual attention. Particularly applicable to noisy machines which need intermittent manual attention since the cabins provide soundproofing during operation.
    Type: Grant
    Filed: May 5, 1977
    Date of Patent: July 18, 1978
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel
    Inventors: Pierre Andre, Robert Caretti, Michel Depoutot, Gerard Mercet