Patents by Inventor Marc Blancfene

Marc Blancfene 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: 6218636
    Abstract: An electrical arc extinguishing chamber designed to be placed facing separable contacts of a switchgear apparatus and to extinguish the arc generated by separation of the contacts comprises two side walls facing one another and a plurality of spaced apart plates arranged between the side walls and secured by the side walls. The side walls have a stratified composite structure with at least two layers. The layers comprise a polyamide fabric impregnated with thermosetting resin. The chamber thus obtained has advantageous breaking strength properties. The edges of the side walls do not present any dielectric weakness points. The chamber is particularly suitable for low-voltage switchgear of high power ratings.
    Type: Grant
    Filed: December 29, 1999
    Date of Patent: April 17, 2001
    Assignee: Square D Company
    Inventors: Marc Blancfene, Marc Rival
  • Patent number: 6018284
    Abstract: The circuit breaker pole or poles comprise a movable contact means with a support carrier movable with respect to the frame between an open position and a closed position and one or more contact fingers movable with respect to the support carrier between a contact position and a retracted position. Electromagnetic compensation means are designed to apply electromagnetic forces on the contact finger or fingers tending to keep the contact finger or fingers in contact with the stationary contact means. Electromagnetic limiting means are designed to apply electromagnetic forces on the contact finger or fingers tending to drive the finger or fingers to their retracted position.
    Type: Grant
    Filed: July 15, 1999
    Date of Patent: January 25, 2000
    Assignee: Schneider Electric Industries SA
    Inventors: Marc Rival, Marc Blancfene, Claude Grelier