Patents by Inventor Klaus Blumel
Klaus Blumel 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).
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Patent number: 8980397Abstract: A composite sheet comprising two sheets joined by material closure provides on the one hand high global and local bending stiffness, and on the other hand very good forming behavior and very high load capacity in case of great deformations, as in case of a crash for example. Both sheets of the composite sheet comprise an at least partially structured surface and a smooth surface and both sheets are at least partially joined by material closure via the structured surfaces.Type: GrantFiled: August 14, 2007Date of Patent: March 17, 2015Assignee: ThyssenKrupp Steel Europe AGInventors: Lothar Patberg, Klaus Blümel
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Publication number: 20090280348Abstract: A composite sheet comprising two sheets joined by material closure provides on the one hand high global and local bending stiffness, and on the other hand very good forming behavior and very high load capacity in case of great deformations, as in case of a crash for example. Both sheets of the composite sheet comprise an at least partially structured surface and a smooth surface and both sheets are at least partially joined by material closure via the structured surfaces.Type: ApplicationFiled: August 14, 2007Publication date: November 12, 2009Applicant: ThyssenKrupp Steel AGInventors: Lothar Patberg, Klaus Blümel
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Patent number: 6883218Abstract: This invention relates to a procedure for manufacturing cold-formed components (R) out of sheet steel and use of a sheet bar comprising the following steps: Generation of a sheet bar (P) out of a base plate (G), which consists of a first steel material; replacement of at least one section of the base plate (G) with a sheet steel blank (1, 2) whose thickness (D1, D2) or at least one material property differs from the first sheet steel (G), wherein the thickness (D1, D2) and/or deviating material property and the geometry of the sheet steel blank (1, 2) and its position in the sheet bar (P) are determined by the material flow during the ensuing cold forming process; and cold forming of the sheet bar (P) to fabricate the component (R). The procedure according to the invention ensures an improved result of cold forming, or even enables the manufacture of specific component shapes in the first place.Type: GrantFiled: September 4, 2001Date of Patent: April 26, 2005Assignee: Thyssen Krupp Stahl AGInventors: Martin Kibben, Thomas Flehming, Klaus Blümel
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Patent number: 6658912Abstract: The invention relates to a bending mandrel for a bending device and also to a bending method for pipes, more particularly pipes which have a large diameter-to-wall thickness ratio and are to be bent by a small radius, for example, of the order of magnitude of the pipe diameter. To this end use is made of a bending mandrel (5, 6) to whose rigid head (5) assembly (6) of springy sheet metal lamellae (6a, 6b) is attached to improve the bendability of the bending mandrel (5, 6) while maintaining a satisfactory supporting action, the lamellae (6a), with the exception of the outer lamellae (6b), having window-like cutaway portions (6c).Type: GrantFiled: February 27, 2002Date of Patent: December 9, 2003Assignee: Thyssen Krupp Stahl AGInventors: Thomas Flehmig, Uwe Kneiphoff, Klaus Blümel, Klaus Göhler
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Patent number: 6564646Abstract: The invention relates to a method of measuring the biaxial shaping behaviour of metal materials, more particularly sheet metal. In the measuring method a flow locus curve comprehensively describing the shaping behaviour of the material is determined by determining the flow limits under tensile and compressive loading of secondary samples of a primary sample previously subjected to at least tensile, but preferably also to compressive loading. Preferably a number of flow locus curves of different preliminary loading of the primary sample are determined for each material. These flow locus curves, completely ascertained by tests, provide the further processor with a reliable ancillary means of selecting a material required for the particular shaping operation.Type: GrantFiled: January 4, 1999Date of Patent: May 20, 2003Assignee: Thyssen Stahl AGInventors: Jörg Gerlach, Klaus Blümel
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Patent number: 6494360Abstract: An apparatus to produce straight bead welded tubes from flat sheet metal blanks with two parallel longitudinal edges includes two form tool halves. The two form tool halves have outer cylindrical half shells borne by a tool support, and are disposed laterally inverted in relation to one another. They are moved towards one another and out of an opened receiving position for the sheet metal blanks into a closed position, in which the two longitudinal edges are held together by the two form tool halves. The apparatus also includes a welding device, which moves over the two form tool halves along the two longitudinal edges retained in a welding position. The two form tool halves have cylindrical internal mandrel halves which are fixedly associated with the outer cylindrical half shells and which cooperate with the outer cylindrical half shells to produce form gaps for insertion of the sheet metal blanks.Type: GrantFiled: December 22, 2000Date of Patent: December 17, 2002Assignee: Thyssen Krupp Stahl AGInventors: Thomas Flehmig, Klaus Blümel, Thomas Neuhausmann
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Patent number: 6428905Abstract: The invention relates to a double-layered sheet comprising two cover sheets (1, 2) with a space between them, and a fill material (3) which fills the space between said cover sheets. Said fill material is made of plastic, in particular of porous duroplastic plastic, comprising embedded hard bodies (6, 7, 8, 9). In order to obtain the best possible geometrical moment of inertia while keeping the weight per surface area low, and in particular in order to prevent shearing out under pressure, of the cover sheet (1) acting as a compression chord, during pressing together of the double-layered sheet, the fill material is characterised by at least two stress/strain characteristic curves. In particular the fill material comprises pores which are sealed off from each other.Type: GrantFiled: January 10, 2001Date of Patent: August 6, 2002Assignee: Thyssen Krupp Stahl AGInventors: Friedrich Behr, Klaus Blümel, Horst Mittelstädt, Cetin Nazikkol, Werner Hufenbach, Frank Adam
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Publication number: 20020035772Abstract: This invention relates to a procedure for manufacturing cold-formed components (R) out of sheet steel and use of a sheet bar comprising the following steps: Generation of a sheet bar (P) out of a base plate (G), which consists of a first steel material; replacement of at least one section of the base plate (G) with a sheet steel blank (1, 2) whose thickness (D1, D2) or at least one material property differs from the first sheet steel (G), wherein the thickness (D1, D2) and/or deviating material property and the geometry of the sheet steel blank (1, 2) and its position in the sheet bar (P) are determined by the material flow during the ensuing cold forming process; and cold forming of the sheet bar (P) to fabricate the component (R). The procedure according to the invention ensures an improved result of cold forming, or even enables the manufacture of specific component shapes in the first place.Type: ApplicationFiled: September 6, 2001Publication date: March 28, 2002Inventors: Martin Kibben, Thomas Flehming, Klaus Blumel
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Patent number: 6065266Abstract: The invention relates to a light structural steel plate in the form of a hump plate and to a process for its production. The light structural steel plate comprises a mould-pressed steel hump plate (1) and a flat aluminium plate (3) connected thereto substance-to-substance at a the hump end faces. The substance-to-substance connection is produced by the feature that after the surfaces to be interconnected at the hump end faces have been activated by means of a laser beam (5), said surfaces are metallically connected under pressure. The decisive factor is that the material of the plates (1, 2) does not pass into the molten phase during activation by means of the laser beam (5).Type: GrantFiled: July 14, 1998Date of Patent: May 23, 2000Assignee: Thyssen Stahl AGInventors: Friedrich Behr, Klaus Blumel, Hans Pircher
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Patent number: 6063507Abstract: The invention relates to a double-layered sheet metal with a first layer (5) of sheet metal comprising indented knobs (4.sub.I -4.sub.IV ; 4.sub.V -4.sub.VII ; 4.sub.VIII -4.sub.XIII), with several of these knobs forming the corner points of a geometrical segment (8.sub.I, 8.sub.II, 8.sub.III) of the first layer (5) of sheet metal, with a second layer (6) of sheet metal which is connected to the first layer (5) of sheet metal in the area of the tips (4a) of the knobs (4.sub.I -4.sub.IV ; 4.sub.V -4.sub.VII ; 4.sub.VIII -4.sub.XIII), and with a filling (7) made of filling material arranged in the void remaining between the layers (5, 6) of sheet metal. With such a double-layered sheet metal the danger of "total failure" in the case of a load exceeding elastically endured deformation is reduced in that the geometrical segment (8.sub.I, 8.sub.II, 8.sub.Type: GrantFiled: August 14, 1998Date of Patent: May 16, 2000Assignee: Thyssen Stahl AGInventors: Klaus Blumel, Friedrich Behr, Klaus Gohler, Christian Hager, Uwe Kneiphoff
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Patent number: 5953949Abstract: The invention relates to the production of a metal strip having formed-in thinner areas. To this end the strip B is drawn through a drawing nip 1, 2 formed by the end face of a working roll 3 adjusted at an angle and a support roll 4, which can take the form of a working roll. When drawing takes place through the working nip 1, 2, a rolling force and simultaneously a tensile force transversely of the pulling direction are so exerted on the strip B by the two rolls 3, 4 that the displaced material flows practically exclusively transversely of the pulling direction in the areas to be thinned down.Type: GrantFiled: September 25, 1998Date of Patent: September 21, 1999Assignee: Thyssen Krupp Stahl AGInventors: Friedrich Behr, Klaus Blumel, Thomas Flehmig