Patents by Inventor Charles Schepacz

Charles Schepacz 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 electrochemical machining of polyphase alloys
    Patent number: 4163701
    Abstract: An electric current is passed through an electrolyte having a neutral pH, between an inert tool-electrode and the alloy which is to be machined to the shape of the tool-electrode. The electrolyte contains fluoride and/or fluoborate ions as well as complexing ions both for the carbide-phase metal or metals of the alloy and for the metallic-phase metal or metals of the alloy.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: August 7, 1979
    Assignee: Centre Technique des Industries Mecaniques
    Inventor: Charles Schepacz
  • Method of electrochemical machining
    Patent number: 4153524
    Abstract: A pulsating current comprising only positive half-waves separated by zero-current intervals is fed into an electrolyte between two electrodes in which the cathode is constituted by a tool and the anode is constituted by a part to be machined in accordance with the profile of the cathode. The electrolyte is of the passivating type which preferably contains between 30 and 50 grams per liter of sodium nitrate.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: May 8, 1979
    Assignee: Centre Technique des Industries Mecaniques
    Inventors: Andre Roche, Charles Schepacz