Patents by Inventor Jacques Dugray

Jacques Dugray 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 of measuring forces in the presence of an external pressure
    Patent number: 6799469
    Abstract: The invention relates to a method of measuring a force F exerted on a piece in a given direction in the presence of external pressure Pe and temperature T. According to the invention: the response Rcap of a deformation sensor to the total force exerted on the piece is measured; said external pressure Pe and said temperature T are determined; and the force F exerted on the piece in said given direction is determined by a relationship between the response of said deformation sensor (Rcap) and a polynomial function of degree n of the pressure Pe [fn(Pe)], said relationship being such that: F=K.Rcap−fn(Pe) where K is a constant determined by calibration of the sensor.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: October 5, 2004
    Assignee: Schlumberger Technology Corporation
    Inventors: Laurent Demia, Jacques Dugray, Jean-Pierre Trioullier
  • Method of measuring forces in the presence of an external pressure
    Publication number: 20030154037
    Abstract: The invention relates to a method of measuring a force F exerted on a piece in a given direction in the presence of external pressure Pe and temperature T.
    Type: Application
    Filed: February 20, 2003
    Publication date: August 14, 2003
    Inventors: Laurent Demia, Jacques Dugray, Jean-Pierre Trioullier