Patents by Inventor Danielle Schnellmann

Danielle Schnellmann 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).

  • Machining fluid for electrical discharge machining apparatus
    Patent number: 4891162
    Abstract: An electrical discharge machining fluid consisting principally of de-ionized water and a triethanolamine salt, the latter being at a concentration of 0.2% to 10% by volume.The method for preparing the machining fluid consists in adding to the de-ionized water, under vigorous stirring, from 0.2% to 10% by volume of a mixture of triethanolamine and a fatty acid. The machining fluid of the invention permits to operate at an increased machining speed and to obtain clean machined surfaces.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: January 2, 1990
    Assignee: Charmilles Technologies SA
    Inventor: Danielle Schnellmann
  • Wire electrode for cutting an electrode workpiece by electrical discharges
    Patent number: 4341939
    Abstract: A metallic wire, for cutting a workpiece by electrical discharge machining, coated with at least one layer of a metal having a low temperature of vaporization and a film of a metal oxide on the metal layer. The metallic coating is preferably made of zinc and is subjected to an oxidizing thermal or electrolytic treatment such as to form on the surface of the metallic layer a thin film of zinc oxide.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: July 27, 1982
    Assignee: Ateliers des Charmilles, S.A.
    Inventors: Jean-Paul Briffod, Roland Martin, Jean Pfau, Bernard Bommeli, Danielle Schnellmann