Patents by Inventor Pierre Chappaz

Pierre Chappaz 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).

  • High voltage insulator
    Patent number: 5902963
    Abstract: An improved high voltage insulator includes a central core and an insulating body fitted tightly around the central core. A flexible coating layer is interposed between a part of the central core and the insulating body. The flexible coating layer fills in shrinkage cavities and compensates for a retraction effect caused by injected material used in forming the insulating body. The insulating body is overmolded to the central core previously coated with the flexible coating layer with an injected insulating resin such as a thermoplastic or thermosetting resin. The insulator could be used as a capactive divider or bushing insulator.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: May 11, 1999
    Assignee: Schneider Electric
    Inventors: Pierre Chappaz, Yvan Fedorenko, Jacques Quenin, Fran.cedilla.ois Trichon, Bernard Yvars
  • Manufacturing process of an insulator
    Patent number: 5779963
    Abstract: A process of manufacturing an insulator having a central core and an insulating body fitted tightly around the central core includes interposing a flexible coating layer between a part of the central core and the insulating body. The flexible coating layer fills in shrinkage cavities and compensates for a retraction effect caused by injected material used in forming the insulating body. The insulating body is achieved by overmolding the central core previously coated with the flexible coating layer with an injected insulating resin such as a thermoplastic or thermosetting resin. The insulator could be used as a capacitive divider or bushing insulator.
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: July 14, 1998
    Assignee: Schneider Electric SA
    Inventors: Pierre Chappaz, Yvan Fedorenko, Jacques Quenin, Fran.cedilla.ois Trichon, Bernard Yvars