Patents by Inventor Paul Dumon

Paul Dumon 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 manufacturing a part having a mechanically weakened area forming a hole or a hole precursor
    Patent number: 6419872
    Abstract: A method of manufacturing a part having at least one mechanically weakened area includes a step of producing a thermoplastics material part and at least one cycle of steps entailing forming a localized opening through an area of the part, heating the part locally by means of a heating probe so as to render the aforementioned area of the part plastic, and using a punch to modify the geometry of the area rendered plastic so as to delimit in the part a mechanically weakened area constituting a hole or hole precursor.
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: July 16, 2002
    Assignee: Plant Wattohm
    Inventors: Jean-Jacques Claisse, Christophe Albert, Paul Dumon
  • Method of manufacturing a part having a mechanically weakened area forming a hole or a hole precursor, and section obtained in this way
    Publication number: 20020076519
    Abstract: A method for making a part with at least a mechanically weakened zone, including a step of producing a thermoplastic part (10), and at least a cycle of steps which include: locally producing a through recess in a zone of the part having a constant thickness; locally heating the part using a heat probe (15) so as to make the zone of the part plastic; modifying with a punch (15) the geometry of the resulting plastic zone so as to define in the part a mechanically weakened zone constituting a hole or a hole outline.
    Type: Application
    Filed: September 24, 2001
    Publication date: June 20, 2002
    Applicant: Planet WATTOHM
    Inventors: Jean-Jacques Claisse, Christophe Albert, Paul Dumon