Patents by Inventor Dominique Wiencek

Dominique Wiencek 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).

  • Continuous process for solvent-free manufacture of heat-curable composite pyrotechnic products
    Patent number: 5831339
    Abstract: The present invention relates to the field of the continuous manufacture of composite pyrotechnic products.A heat-curable liquid binder (3) is mixed with a thickening filler (4) in a mixer (1) so as to obtain a viscous premix (2) which is unreactive at ambient temperature and which can be subsequently mixed with oxidizing fillers (17) to give, after extrusion and chopping, intermediate products (24) which are not yet crosslinked but which have stable geometrical dimensions. The structure of the products (24) is subsequently set by crosslinking the binder in an oven (26).The invention permits the continuous industrial manufacture in series of small crosslinked composite pyrotechnic charges without any "pot life" constraint since the binder does not change at ambient temperature.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: November 3, 1998
    Assignee: Societe Nationale des Poudres et Explosifs
    Inventors: Alain Lefumeux, Dominique Wiencek