Patents by Inventor Theodor Selbach

Theodor Selbach 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).

  • Apparatus for achieving and maintaining an oxygen-deficient inert atmosphere within a treatment chamber
    Patent number: 5154892
    Abstract: A method and apparatus are disclosed for achieving and maintaining an inert atmosphere as oxygen-deficient as possible in a treatment chamber, having a reaction zone, particularly an irradiation chamber, traversed by a length of material, wherein the length of material is supplied to the chamber through an inlet channel and conducted from the chamber through an outlet channel. A circulating inert gas stream, which detaches the entrained gas boundary layer held by the material, is moved countercurrently to the length of material in the inlet channel and is supplemented in a controlled manner with fresh inert gas in such amount that a given maximum oxygen concentration is not exceeded in the reaction zone and the flow rate of the inert gas stream is controlled, so that the pressure before the exit gap of the outlet channel is the same or slightly higher than the surrounding pressure.
    Type: Grant
    Filed: July 17, 1991
    Date of Patent: October 13, 1992
    Assignee: Th. Goldschmidt AG
    Inventors: Gerhard Luhmann, Theodor Selbach, Jurgen Jachmann
  • Method for achieving and maintaining an oxygen-deficient inert atmosphere within a treatment chamber and apparatus for implementing the method
    Patent number: 5079045
    Abstract: A method and apparatus are disclosed for achieving and maintaining an inert atmosphere as oxygen-deficient as possible in a treatment chamber, having a reaction zone, particularly an irradiation chamber, traversed by a length of material, wherein the length of material is supplied to the chamber through an inlet channel and conducted from the chamber through an outlet channel. A circulating inert gas stream, which detaches the entrained gas boundary layer held by the material, is moved countercurrently to the length of material in the inlet channel and is supplemented in a controlled manner with fresh inert gas in such amount that a given maximum oxygen concentration is not exceeded in the reaction zone and the flow rate of the inert gas stream is controlled, so that the pressure before the exit gap of the outlet channel is the same or slightly higher than the surrounding pressure.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: January 7, 1992
    Assignee: Th. Goldschmidt AG
    Inventors: Gerhard Luhmann, Theodor Selbach, Jurgen Jachmann