Patents by Inventor David Chambon

David Chambon 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).

  • Checking apparatus for checking operation of a densimeter for medium-voltage and high-voltage electrical equipment, and a method of checking operation of a densimeter
    Patent number: 7937985
    Abstract: Checking apparatus for checking operation of a densimeter for medium-voltage or high-voltage equipment having metal casing (4) that is filled with a dielectric gas under pressure; the apparatus comprises a closed chamber (8) suitable for being put into communication with an internal space (5) of the casing (4), and isolation means (10) for isolating the chamber (8) in gastight manner from the internal space (5), in which apparatus said closed chamber (8) has a volume that can be caused to vary, and in which apparatus the densimeter is suitable for detecting at least one pressure threshold in said chamber.
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: May 10, 2011
    Assignee: Areva T&D SA
    Inventor: David Chambon
  • CHECKING APPARATUS FOR CHECKING OPERATION OF A DENSIMETER FOR MEDIUM-VOLTAGE AND HIGH-VOLTAGE ELECTRICAL EQUIPMENT, AND A METHOD OF CHECKING OPERATION OF A DENSIMETER
    Publication number: 20080078237
    Abstract: Checking apparatus for checking operation of a densimeter for medium-voltage or high-voltage equipment having metal casing (4) that is filled with a dielectric gas under pressure; the apparatus comprises a closed chamber (8) suitable for being put into communication with an internal space (5) of the casing (4), and isolation means (10) for isolating the chamber (8) in gastight manner from the internal space (5), in which apparatus said closed chamber (8) has a volume that can be caused to vary, and in which apparatus the densimeter is suitable for detecting at least one pressure threshold in said chamber.
    Type: Application
    Filed: September 24, 2007
    Publication date: April 3, 2008
    Inventor: David CHAMBON