Patents by Inventor Klaus Schwerdtfeger

Klaus Schwerdtfeger 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: 9194612
    Abstract: A stand for supporting solar panels on a flat roof is disclosed. The stand has a foot part, which has a base plate for support on the flat roof, and a head part, which has a support area for solar panels, wherein the head part and the foot part are two separate parts. The foot part has integral lock bars and the head part has integral lock bars. The lock bars connect the head part and the foot part to one another in a form-fitting manner.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: November 24, 2015
    Assignee: Hilti Aktiengesellschaft
    Inventors: Elio Bragagna, Berndt Trebo, Klaus Schwerdtfeger, Gerald Schreiber
  • Publication number: 20140366465
    Abstract: A stand for supporting solar panels on a flat roof is disclosed. The stand has a foot part, which has a base plate for support on the flat roof, and a head part, which has a support area for solar panels, wherein the head part and the foot part are two separate parts. The foot part has integral lock bars and the head part has integral lock bars. The lock bars connect the head part and the foot part to one another in a form-fitting manner.
    Type: Application
    Filed: June 6, 2014
    Publication date: December 18, 2014
    Applicant: Hilti Aktiengesellschaft
    Inventors: Elio BRAGAGNA, Berndt Trebo, Klaus Schwerdtfeger, Gerald Schreiber
  • Patent number: 6585032
    Abstract: A strip casting plant with side limits arranged closely adjacent to a carrying belt. The side limits, and preferably the supply device for molten metal, are capable of vibrating and are connected to a device for producing vibrations. The adhesion of solidified material can thus be prevented.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: July 1, 2003
    Assignee: Mannesmann AG
    Inventors: Klaus Schwerdtfeger, Karl-Heinz Spitzer, Paul Freier, Thomas Von Hinrichs, Wolfgang Reichelt, Ulrich Urlau, Ewald Feuerstacke, Joachim Kroos, Michael Brühl
  • Publication number: 20020079084
    Abstract: A strip casting plant with side limits arranged closely adjacent to a carrying belt. The side limits, and preferably the supply device for molten metal, are capable of vibrating and are connected to a device for producing vibrations. The adhesion of solidified material can thus be prevented.
    Type: Application
    Filed: November 5, 2001
    Publication date: June 27, 2002
    Applicant: Mannesmann AG
    Inventors: Klaus Schwerdtfeger, Karl-Heinz Spitzer, Paul Freier, Thomas Von Hinrichs, Wolfgang Reichelt, Ulrich Urlau, Ewald Feruerstacke, Joachim Kroos, Michael Bruhl
  • Publication number: 20010047856
    Abstract: The invention relates to a strip casting plant with side limits arranged closely adjacent to a carrying belt. The side limits, and preferably the supply device for molten metal, are capable of vibrating and are connected to a device for producing vibrations. The adhesion of solidified material can thus be prevented.
    Type: Application
    Filed: August 2, 1999
    Publication date: December 6, 2001
    Inventors: KLAUS SCHWERDTFEGER, KARL-HEINZ SPITZER, PAUL FREIER, THOMAS VON HINRICHS, WOLFGANG REICHELT, ULRICH URLAU, EWALD FEUERSTACKE, JOACHIM KROOS, MICHAEL BRUHL
  • Patent number: 6206083
    Abstract: A strip casting plant with a circulating belt. In the cooling area, the belt is sucked against carriers by a negative pressure in the cooler. The carriers are arranged so that, with given mechanical properties of the circulating belt, a deflection that compensates for the thermal elongation takes place between the supporting surfaces of the carriers.
    Type: Grant
    Filed: January 26, 1999
    Date of Patent: March 27, 2001
    Assignee: Mannesmann AG
    Inventors: Klaus Schwerdtfeger, Karl-Heinz Spitzer, Wolfgang Reichelt, Ulrich Urlau, Joachim Kroos, Heino Buddenberg
  • Patent number: 6192973
    Abstract: The cast steel strip must be supported, particularly after the casting device, to reduce stresses and mechanical deformations. A flexible support element, in particular, a chain with rolls, whose length can be changed by suitable adjustment devices, is arranged for the purpose of support after the casting device.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: February 27, 2001
    Assignee: Mannesmann AG
    Inventors: Klaus Schwerdtfeger, Karl-Heinz Spitzer, Ulrich Urlau, Dietmar Franke, Bernfried Stache, Joachim Kroos, Heino Buddenberg
  • Patent number: 6123186
    Abstract: A supporting arrangement for the transport belt in thin strip casting plants. The liquid steel is cast onto the circulating transport belt. On its underside, the transport belt has devices for generating a negative pressure and for supporting the belt as well as for cooling. In the past, rollers were used for supporting the belt. Between the supporting points of the belt on the rollers, upward curvatures of the belt may occur. This is avoided by the use of supports of which the spacings measured transversely to the transporting direction are greater than the lengths of the supports in this direction.
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: September 26, 2000
    Assignee: Mannesmann AG
    Inventors: Klaus Schwerdtfeger, Karl-Heinz Spitzer, Wolfgang Reichelt, Ulrich Urlau, Ewald Feuerstacke, Joachim Kroos
  • Patent number: 6112954
    Abstract: A nozzle for thin strip casting plants, especially for steel strip. In casting plants of this type, the liquid steel must be applied on a carrier from the nozzle forming a casting gap. At least one primary coil and a secondary coil are arranged at the nozzle, wherein the secondary coil is water-cooled and projects into the area of the casting gap.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: September 5, 2000
    Assignee: Mannesmann AG
    Inventors: Klaus Schwerdtfeger, Karl-Heinz Spitzer, Wolfgang Reichelt, Ulrich Urlau, Joachim Kroos, Michael Bruhl
  • Patent number: 4836271
    Abstract: In a process for casting metal strip, in particular steel strip, the liquid metal is discharged from a casting nozzle which has the same width as the strip onto a continuously moving, cooled conveyor belt, and the plane of the nozzle mouth is set for the thickness of the metal strip to be cast, i.e. at an acute angle to the plane of the conveyor belt. To maintain the casting speed at the nozzle mouth on the conveyor belt, i.e. to prevent shearing forces of the flow layers and thus a speed profile with negative components, the invention proposes that with a conveyor belt running at an inclination to the horizontal in the casting direction, the inclination of the conveyor belt in the casting direction is set as a function of the casting speed, which should be equal to the conveyor belt speed, and as a function of the material parameters of the liquid metal.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: June 6, 1989
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Wolfgang Reichelt, Matthias Scheulen, Klaus Schwerdtfeger, Peter Voss-Spilker, Ewald Feuerstacke
  • Patent number: 4721152
    Abstract: An apparatus for continuously casting metal for obtaining a substantially flat casting includes a vessel having a bottom opening defined by side walls and by a rear wall and a tiltable front wall, the rear and front walls ending at different levels so that the bottom opening has a horizontal as well as a vertical component; a planar metal, endless belt is disposed underneath the opening and defines a casting gap together with the front wall, the more downwardly extending rear wall in conjunction with that casting gap deflects casting material from a down flow directly into the horizontal; a meniscus seals the rear wall against the belt; the belt is spray cooled from below.
    Type: Grant
    Filed: November 7, 1986
    Date of Patent: January 26, 1988
    Assignee: Mannesmann AG
    Inventors: Wolfgang Reichelt, Klaus Schwerdtfeger, Peter Voss-Spilker