Patents by Inventor Tarek El Gammal

Tarek El Gammal 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: 6153028
    Abstract: A device and a process for producing thin steel metal bars in which an elongated metal product is brought into contact with a molten metal causing the latter to crystallize. Different materials are used for the elongated metal product and the molten metal, whereby one of the materials is a stainless steel. A temperature of the elongated metal product, a temperature of the molten metal and a dwelling time of the elongated metal product in the molten metal are set in such a way that the molten metal crystallizes on the elongated metal product so as to form a layer having a thickness of 2% to 20% of a thickness of the elongated metal product.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: November 28, 2000
    Assignee: Mannesmann AG
    Inventors: Fritz-Peter Pleschiutschnigg, Ingo Von Hagen, Markus Ring, Wolfgang Bleck, Tarek El Gammal, Paul Splinter, Peter Lorenz Hamacher, Oliver Richard Picht
  • Patent number: 6095232
    Abstract: The invention is directed to a process for producing metallic composite material in which there is applied to at least one side of a parent strand a material having different material characteristics. For this purpose, according to the invention, the parent strand is guided through a melt having the same material composition as the parent strand, wherein melt crystallizes on by inversion casting and, at a predefinable distance from the surface of the molten bath, a composite section is fed to the carrier section after it has exited from the molten bath, this composite section being welded with the surface of the carrier section. The invention is further directed to a device for carrying out the process.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: August 1, 2000
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Tarek El Gammal, Gamal Mohamed Megahed, Fritz-Peter Pleschuitschnigg, Ingo Von Hagen
  • Patent number: 5992501
    Abstract: An inversion casting vessel includes a melt-filled container with a hole in the floor through which a metal strip is drawn. As the strip is drawn through the container, crystallization of the melt on the metal strip occurs, thereby forming a metal strand. The hole in the floor is a slit shaped channel through which the strip is run in a low-contact manner. The container also includes a cooling device for cooling the melt in the area of the slit shaped channel. The cooling device maintains the temperature of the melt around the channel to create a two-phase field of the melt, one of the phases being crystal, making up 50%-90% of the two phase field. The metal strip first contacts the melt at the two-phase field of the melt as the strip is run through the melt container.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: November 30, 1999
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Tarek El Gammal, Peter Hamacher, Michael Vonderbank, Fritz-Peter Pleschiutschnigg, Ingo Von Hagen
  • Patent number: 5881441
    Abstract: An apparatus and a process for making semi-finished products in the form of ti metal bars having a width-gauge ratio of over 60 and a maximum sheet metal gauge tolerance of 2%. A metal profile is fed continuously and upwardly through a pool of melt material having the same composition as the metal profile so as to form a coated metal profile. The metal profile is fed at a rate which would result in a coated metal profile having a thickness of at least three times that of the uncoated metal profile. The coated metal profile is subjected to a smoothing pass between a pair of smoothing rolls when the mean temperature in the crystallized layer of the coated metal profile meets a given condition. The smoothing rolls are adjustably disposed inside a housing at a distance of 0.5 to 5 m from the melt pool surface.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: March 16, 1999
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Fritz P. Pleschiutschnigg, Lothar Parschat, Dieter Stalleicken, Tarek El Gammal, Michael Vonderbank, Peter Lorenz Hamacher, Ingo von Hagen, Ulrich Menne, Uwe Schmidt
  • Patent number: 5850869
    Abstract: An inversion casting device with a crystallizer which has a slit-shaped passage for guiding a substrate strip, this passage being arranged in the base and provided with a seal, and which communicates with a melt feed. A collecting tank is provided which passes horizontally about the crystallizer vessel so that the collecting tank communicates with nozzles (23) arranged in the region of the passage. The nozzle orifices are so arranged that the melt flowing out strikes the substrate strip at a flat angle of inclination .alpha. in the strip take-off direction.
    Type: Grant
    Filed: May 22, 1997
    Date of Patent: December 22, 1998
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Fritz-Peter Pleschiutschnigg, Dieter Stalleicken, Lothar Parschat, Ingo von Hagen, Ulrich Menne, Tarek El Gammal, Peter Lorenz Hamacher, Michael Vonderbank
  • Patent number: 5722151
    Abstract: An apparatus and a process for making semi-finished products in the form of thin metal bars having a width-gauge ratio of over 60 and a maximum sheet metal gauge tolerance of 2%. A metal profile is fed continuously and upwardly through a pool of melt material having the same composition as the metal profile so as to form a coated metal profile. The metal profile is fed at a rate which would result in a coated metal profile having a thickness of at least three times that of the uncoated metal profile. The coated metal profile is subjected to a smoothing pass between a pair of smoothing rolls when the mean temperature in the crystallized layer of the coated metal profile meets a given condition. The smoothing rolls are adjustably disposed inside a housing at a distance of 0.5 to 5 m from the melt pool surface.
    Type: Grant
    Filed: January 25, 1996
    Date of Patent: March 3, 1998
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Fritz P. Pleschiutschnigg, Lothar Parschat, Dieter Stalleicken, Tarek El Gammal, Michael Vonderbank, Peter Lorenz Hamacher, Ingo von Hagen, Ulrich Menne, Uwe Schmidt
  • Patent number: 4240496
    Abstract: The invention provides shaped, refractory, heat-insulating articles, for use in a metallurgical vessel, comprising particulate refractory material, binder and particulate de-fibred bagasse or the like. The articles may be made by mixing the ingredients, pressing them in a former and causing or allowing the binder to set. The articles may be slabs for lining the head of a mould for steel ingots.
    Type: Grant
    Filed: May 30, 1979
    Date of Patent: December 23, 1980
    Assignee: Foseco Trading A.G.
    Inventor: Tarek El Gammal
  • Patent number: 4199351
    Abstract: The invention provides a body for introducing a treatment agent into a metal melt e.g. a ferrous metal melt, the body comprising a volatile treatment agent e.g. magnesium dispersed in a matrix comprising refractory, heat-insulating material, a particulate material of high thermal conductivity and a binder. The body enables metal to be treated quickly, reliably and safely.
    Type: Grant
    Filed: July 10, 1978
    Date of Patent: April 22, 1980
    Assignee: Foseco Trading A.G.
    Inventor: Tarek El Gammal