Patents by Inventor Alain Freche

Alain Freche 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).

  • Explosive munition component of low vulnerability, comprising a dual composition explosive charge and process for obtaining a fragmentation effect
    Patent number: 5243916
    Abstract: The present invention relates to an effective and explosive munition component of low vulnerability, consisting of a casing 1 containing an explosive charge consisting of an internal layer 2 made of plastic bonded explosive in which the filler contains at least one organic nitrated explosive, coated with a peripheral adjacent coaxial layer 3 made of less sensitive pyrotechnic composition consisting of a filled polymeric matrix in which the filler contains at least one inorganic oxidizing agent or an organic nitrated explosive.The interface between the two layers 2 and 3 is of star-shaped cross-section.The invention also relates to the process for obtaining a fragmentation effect by detonation of the layer 2, reaction of the layer 3 followed by bursting of the casing due to the pressure of the gases formed.
    Type: Grant
    Filed: June 18, 1992
    Date of Patent: September 14, 1993
    Assignee: Societe Nationale des Poudres et Explosifs
    Inventors: Alain Freche, Bruno Nouguez