Patents by Inventor Jean-Charles Delwarde

Jean-Charles Delwarde 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).

  • Process for providing gradual deployment of an airbag and a pyrotechnic charge for its implementation
    Patent number: 6322649
    Abstract: The invention relates to the field of protecting the occupants of a motor vehicle by an inflatable airbag. The invention relates to a process consisting in inflating an airbag (1) by a pyrotechnic generator (2) containing a double-composition charge (9) formed around a main charge having a linear burning rate V1 and at least part of the ignition faces of which are covered with a skin of moderate pyrotechnic composition having a linear burning rate V2 satisfying the relationship: 0.05 V1≦V2≦0.5 V1. The invention thus makes it possible to inflate the airbag gradually during the first milliseconds of deployment of the latter.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: November 27, 2001
    Assignee: Livbag SNC
    Inventors: Benoît Marsaud, Christian Perotto, Jean-Charles Delwarde, Daniel Duvacquier
  • Process for providing gradual deployment of an airbag and a pyrotechnic charge for its implementation
    Patent number: 6129023
    Abstract: The invention relates to the field of protecting the occupants of a motor vehicle by an inflatable airbag.The invention relates to a process consisting in inflating an airbag (1) by a pyrotechnic generator (2) containing a double-composition charge (9) formed around a main charge having a linear burning rate V.sub.1 and at least part of the ignition faces of which are covered with a skin of moderate pyrotechnic composition having a linear burning rate V.sub.2 satisfying the relationship:0.05 V.sub.1 .ltoreq.V.sub.2 .ltoreq.0.5 V.sub.1.The invention thus makes it possible to inflate the airbag gradually during the first milliseconds of deployment of the latter.
    Type: Grant
    Filed: April 10, 1998
    Date of Patent: October 10, 2000
    Assignee: Livbag SNC
    Inventors: Benoit Marsaud, Christian Perotto, Jean-Charles Delwarde, Daniel Duvacquier