Patents by Inventor Jean Baumert

Jean Baumert 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).

  • Patent number: 4368877
    Abstract: A steel refining system has a crucible having an upwardly open mouth and containing a steel melt covered by slag, an oxygen lance directed downwardly into the mouth at the melt, a hood fitting downwardly over the mouth and having a hood wall formed by a multiplicity of coolant tubes, and an arrangement for circulating a coolant through these tubes. The tubes form a tubular hood-wall extension that has an outer end and is centered on an axis trained on the melt on the crucible. A holder is mounted on the outer end of this extension and contains a sound transducer carried by the holder and directed along the axis at the melt. A circuit is connected to this transducer for determining slag thickness by means of the sound detected by the transducer. The holder itself comprises a circularly annular hollow cell fixed by means of a collar to the extension and a transducer housing that is fixed to this cell and therethrough to the extension.
    Type: Grant
    Filed: September 18, 1980
    Date of Patent: January 18, 1983
    Assignee: Arbed S.A.
    Inventor: Jean Baumert
  • Patent number: 4359211
    Abstract: A method of and an apparatus for determining the level of slag above a metallurgical melt, especially a steel melt, and for determining a physical characteristic or property of the slag, such as its viscosity or consistency, utilizes a plurality of nozzles opening into the bath-containing vessel at different levels above the melt and supplied with inert gas. The difference in hydrostatic pressures at the nozzles can be ascertained by measurement of the pressures upstream thereof and the measured values are converted into indications of slag level and consistency.
    Type: Grant
    Filed: July 15, 1980
    Date of Patent: November 16, 1982
    Assignee: Arbed S.A.
    Inventor: Jean Baumert
  • Patent number: 4345746
    Abstract: A ferrous melt, e.g. of steel, is refined beneath a slag layer by blowing from above with an oxygen-containing gas through a lance and by bubbling an inert gas through the melt from the bottom. According to the invention, the consistency of the slag layer and/or its level is continuously detected on the one hand and the rate of decarburation of the bath is detected on the other hand and in response to these measurements the volume rate of flow of the bubbling gas is controlled on the one hand to maintain a predetermined spacing of the slag layer from the head of the lance and, on the other hand, a fluid consistency of the slag.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: August 24, 1982
    Assignee: Arbed S.A.
    Inventors: Francois Schleimer, Romain Henrion, Ferdinand Goedert, Lucien Lorang, Jean Baumert
  • Patent number: 4325730
    Abstract: Slag is conditioned during blowing from above with oxygen of an iron melt by bubbling an inert gas into the melt from the bottom of the crucible in response to measurements made of the flowability of the slag layer and the speed of decarburization.
    Type: Grant
    Filed: November 6, 1980
    Date of Patent: April 20, 1982
    Assignee: Arbed S.A.
    Inventors: Francois Schleimer, Romain Henrion, Ferdinand Goedert, Lucien Lorang, Jean Baumert
  • Patent number: 4175612
    Abstract: An apparatus for controlling the level of liquid steel in a continuous-casting mold wherein the position of the molten steel level within the mold is detected by a coil juxtaposed therewith and forming part of a resonant circuit controlling an oscillator. The capacitor portion of this resonant circuit is formed at least in part by a coaxial cable connecting the coil to the balance of the oscillator circuit. The output frequency of the oscillator is combined with the signal of a reference oscillator in a modulator, the low-frequency passband of this signal is then transformed into an analog voltage proportional to frequency and is used to control a servomotor which regulates the feed of molten metal to the mold.
    Type: Grant
    Filed: November 15, 1977
    Date of Patent: November 27, 1979
    Assignee: ARBED Acieries Reunies de Burbach-Eich-Dudelange S.A.
    Inventor: Jean Baumert
  • Patent number: 4098128
    Abstract: An acoustic tube having several resonant frequencies is directed into the mouth of a rafining crucible and is heated to above 100.degree. C. A microphone at the remote end of this tube receives sound passing through the tube and generates an electrical output corresponding to the sound received. This electrical output is linearized over a band width including several of the resonant frequencies of the tube and the signal is then passed through a low pass filter to eliminate parasitic oscillations and through a mixer where it is combined with a signal from a local oscillator. The intermediate-frequency signal thus produced is passed through either of a pair of band-pass filters and is displayed. The signal strength at the output is inversely proportional to the depth of slag in the crucible, as the deeper the slag the more sound is absorbed in the crucible.
    Type: Grant
    Filed: October 29, 1975
    Date of Patent: July 4, 1978
    Assignee: ARBED -- Acieries Reunies de Burbach-Eich-Dudelange S.A.
    Inventor: Jean Baumert