Patents by Inventor Jean Collard

Jean Collard 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 manufacturing metal parts by free forging and drop forging in a press
    Patent number: 5615465
    Abstract: The process for manufacturing parts of revolution which are made from a high-density metal with great regularity of reproducibility, especially as regards the homogeneity of the matter.It consists in carrying out the following steps:forging in three dimensions by successive upsetting and drawing-out operations carried out in three perpendicular directions;closed-die forging; andrecrystallisation heat treatment.Application to the manufacture of hollow-charged coatings made of tantalum.
    Type: Grant
    Filed: May 7, 1993
    Date of Patent: April 1, 1997
    Assignees: Commissariat a l'Energie Atomique, Thomson-Brandt Armements
    Inventors: Dominique Broussoux, Jean Collard, Marie-Therese Daumas
  • Process for obtaining parts made of copper of very fine texture from a billet made by continuous casting
    Patent number: 5039355
    Abstract: The process according to the invention makes it possible to form parts from copper of high purity and fine structure.Beginning with a billet (1) made by continuous casting, it includes the following main phases:a kneading of the billet (1, 4) comprising upsetting and drawing cycles;cutting of the billet into blanks (8) each intended to form one finished part;an operation of die forging (9, 12) at ambient temperature; anda recrystallization heat treatment to obtain a grain size of the copper of less than 40 micrometers.The invention is applicable to the production of internal liners for shaped charges.
    Type: Grant
    Filed: March 20, 1990
    Date of Patent: August 13, 1991
    Inventors: Marie T. Daumas, Jean Collard, Gerard Tost
  • Floating electric generator using the driving energy of water
    Patent number: 4239976
    Abstract: Electric power is produced from flow of water by means of a floating rotor, journalled on a non-rotating shaft, which is moored in place. The rotor is turned by peripheral vanes, which engage the flow. Inside the rotor are mounted energy conversion means which change the energy of rotation into electric or hydraulic power, delivered to a distribution system through the non-rotating shaft.
    Type: Grant
    Filed: March 29, 1978
    Date of Patent: December 16, 1980
    Inventor: Louis-Jean Collard