Patents Assigned to Vacuumschmelze GmbH & Co. KG
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Patent number: 7578893Abstract: A material for electrical contacts comprising a martensitic cobalt-nickel-iron alloy with a high strength, a high bendability and a high electrical conductivity, with a cobalt content of 12.0?Co?60.0% by weight, a nickel content of 10.0?Ni?36.0% by weight, remainder iron and an impurity content of less than 0.2 atomic percent, with a martensite temperature Ms of 75° C.?Ms?400° C. in the case of the martensitic variant and ?50° C.?Ms?25° C. in the case of the variant which is naturally hard as a result of cold-forming.Type: GrantFiled: August 18, 2005Date of Patent: August 25, 2009Assignee: Vacuumschmelze GmbH & Co. KGInventors: Hartwin Weber, Waldemar Döring, Matthias Schierling
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Patent number: 7570223Abstract: An antenna core comprises a flexible stack of a plurality of oblong soft-magnetic strips consisting of an amorphous or nanocrystalline alloy. The strips of said antenna core are separated from one another by an electrically insulating film each. The amorphous or nanocrystalline alloy has a magnetostriction value lambdas in the range of +4 <·>10<?6> to ?4<·>10<?6> and a linear BH loop. The coefficient of induction L of the antenna core changes at 60 kHz at a center distortion by 25% of its length by less than 10% and the quality Q of the antenna core is >=10 at 60 kHz.Type: GrantFiled: July 21, 2005Date of Patent: August 4, 2009Assignee: Vacuumschmelze GmbH & Co. KGInventors: Giselher Herzer, Franz Till, Harald Hundt
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Publication number: 20090184790Abstract: A soft magnetic alloy consists essentially of 5 percent by weight?Co?30 percent by weight, 1 percent by weight?Cr?20 percent by weight, 0.1 percent by weight?Al?2 percent by weight, 0 percent by weight?Si?1.5 percent by weight, 0.017 percent by weight?Mn?0.2 percent by weight, 0.01 percent by weight?S?0.05 percent by weight where Mn/S is >1.7, 0 percent by weight?O?0.0015 percent by weight, und 0.0003 percent by weight?Ce?0.05 percent by weight, 0 percent by weight?Ca?0.005 percent by weight and the remainder iron, where 0.117 percent by weight?(Al+Si+Mn+V+Mo+W+Nb+Ti+Ni)?5 percent by weight.Type: ApplicationFiled: July 24, 2008Publication date: July 23, 2009Applicant: Vacuumschmelze GmbH & Co. KGInventors: Witold Pieper, Joachim Gerster
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Patent number: 7563331Abstract: The invention relates to a method and to a device for carrying out a manufacturing process in which all magnet cores to be produced are first continuously crystallized. Depending on whether the required hysteresis loops should be round, flat or rectangular, the magnet cores are either immediately finished, that is enclosed in housings, conditioned to a rectangular hysteresis loop in a direct-axis magnetic field or to a flat hysteresis loop in a magnetic cross-field and then finished.Type: GrantFiled: July 11, 2002Date of Patent: July 21, 2009Assignee: Vacuumschmelze GmbH & Co. KGInventors: Jörg Petzold, Volker Kleespies, Hans-Rainier Hilzinger
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Publication number: 20090145522Abstract: Disclosed are soft magnetic alloys that consist essentially of 10% by weight?Co?22% by weight, 0% by weight?V?4% by weight, 1.5% by weight?Cr?5% by weight, 1% by weight?Mn?2% by weight, 0% by weight?Mo?1% by weight, 0.5% by weight?Si?1.5% by weight, 0.1% by weight?Al?1.0% by weight, rest iron. Also disclosed are methods of making the alloys, and products containing them, such as actuator systems, electric motors, and the like.Type: ApplicationFiled: July 27, 2007Publication date: June 11, 2009Applicant: Vacuumschmelze GmbH & Co. KGInventors: Witold Pieper, Joachim Gerster
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Publication number: 20090130483Abstract: An amorphous, ductile brazing foil is produced with a composition of FeaNibCrcSidBeMofPg with 25?a?50 atomic %; 30?b?45 atomic %; 5<c?15 atomic %; 4?d?15 atomic %; 4?e?15 atomic %; 0?f?5 atomic %; 0?g?6 atomic %; and any impurities, wherein 10?d+e+g?28 atomic % with a+b+c+d+e+f+g=100. Excellent brazing joints can be produced with these brazing foils.Type: ApplicationFiled: July 18, 2006Publication date: May 21, 2009Applicant: Vacuumschmelze GmbH & Co. KGInventors: Thomas Hartmann, Dieter Nuetzel
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Publication number: 20090127493Abstract: A method for the production of pressed permanent magnets comprises the following steps: A mixture of at least one magnetic powder and a thermosetting binder is provided and pressed to produce a moulded body. In order to obtain a permanent and particularly reliable protection against oxidation and corrosion, the moulded body is impregnated with an acid and solvent mixture in an impregnating bath before the cure of the thermosetting binder, whereby the entire surface of the permanent magnet is coated with a reaction layer [FIG. 1].Type: ApplicationFiled: April 25, 2007Publication date: May 21, 2009Applicant: Vacuumschmelze GmbH & Co. KGInventors: Georg Werner Reppel, Volker Zellmann
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Patent number: 7532099Abstract: The invention relates to an inductive component (10) whose soft-magnetic core (11) consists of a powder composite. Said powder composite is produced by mixing a ferromagnetic amorphous or nanocrystalline alloy powder with a ferromagnetic dielectric powder and a thermoplastic or duroplastic polymer. Unlike conventional injection-molded or cast soft-magnetic cores, cores from a composite comprising a dielectric ferromagnetic powder allow for packing densities of substantially more than 55% by volume.Type: GrantFiled: April 26, 2002Date of Patent: May 12, 2009Assignee: Vacuumschmelze GmbH & Co. KGInventor: Markus Brunner
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Publication number: 20090110955Abstract: Disclosed is an amorphous, ductile brazing foil with a composition consisting essentially of NirestCraBbPcSid with 2 atomic percent ?a?30 atomic percent; 0.5 atomic percent ?b?14 atomic percent; 2 atomic percent ?c?20 atomic percent; 0 atomic percent ?d?14 atomic percent; incidental impurities ?0.5 atomic percent; rest Ni, where c>b>c/15 and 10 atomic percent ?b+c+d?25 atomic percent. Also disclosed is amorphous, ductile Ni-based brazing foil having a composition consisting essentially of NirestCraBbPcSidCeXfYg wherein a, b, c, d, e, f, and g are numbers such that 2 atomic percent ?a?30 atomic percent; 0.5 atomic percent ?b?14 atomic percent; 2 atomic percent ?c?20 atomic percent; 0 atomic percent ?d?14 atomic percent; 0 atomic percent ?e?5 atomic percent; 0 atomic percent ?f?5 atomic percent; 0 atomic percent ?g?20 atomic percent; wherein incidental impurities are present, if at all, in amounts ?0.Type: ApplicationFiled: October 14, 2008Publication date: April 30, 2009Applicant: Vacuumschmelze GmbH & Co. KGInventors: Thomas Hartmann, Dieter Nuetzel
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Patent number: 7508350Abstract: A highly bendable antenna core (8) which is highly bendable for high-frequency identification systems substantially retains its soft-magnetic properties when bending occurs. The antenna core is produced by using specific amorphous or nanocrystalline alloys having a very low magnetostriction value. The antenna core (8) is embodied in the form of a laminate with/or without insulating layers placed therebetween. An antenna can be provided with one such antenna core.Type: GrantFiled: July 22, 2005Date of Patent: March 24, 2009Assignee: Vacuumschmelze GmbH & Co. KGInventors: Herbert Hein, Wulf Guenther, Harald Hundt, Achim Kipper, Matthias Reidel
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Publication number: 20090039994Abstract: A soft magnetic alloy consists essentially of 10 percent by weight ?Co?22 percent by weight, 0 percent by weight ?V?4 percent by weight, 1.5 percent by weight ?Cr?5 percent by weight, 0 percent by weight <Mn<1 percent by weight, 0 percent by weight ?Mo?1 percent by weight, 0.5 percent by weight ?Si?1.5 percent by weight, 0.1 percent by weight ?Al?1.0 percent by weight and the remainder iron, the content of the elements chromium and manganese and molybdenum and aluminium and silicon and vanadium being 4.0 percent by weight ?(Cr+Mn+Mo+Al+Si+V)?9.0 percent by weight.Type: ApplicationFiled: July 24, 2008Publication date: February 12, 2009Applicant: Vacuumschmelze GmbH & Co. KGInventors: Witold Pieper, Joachim Gerster
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Publication number: 20080318082Abstract: Disclosed are amorphous, ductile brazing foils with a composition consisting essentially of FeRestNiaCrbSicBdPe, wherein 0 atomic %?a<25 atomic %; 0 atomic %?b?15 atomic %; 1 atomic %?c?10 atomic %; 4 atomic %?d?15 atomic %; 1 atomic %?e?9 atomic %; any impurities?0.5 atomic %; rest Fe, wherein 2 atomic %?c+e?10 atomic % and 15 atomic %?c+d+e?22 atomic %, or consisting essentially of FeRestNiaCrbMofCugSicBdPe, wherein 0 atomic %?a<25 atomic %; 0 atomic %?b?15 atomic %; 1 atomic %<c?10 atomic %; 4 atomic %?d?15 atomic %; 1 atomic %?e?9 atomic %; 0 atomic %<f?3 atomic %; 0 atomic %?g?3 atomic %; any impurities?0.5 atomic %; rest Fe, wherein 2 atomic %?c+e?10 atomic % and 15 atomic %?c+d+e?22 atomic %. Also disclosed are brazed objects formed using these foils, particularly exhaust gas recirculation coolers and oil coolers, and methods for making the brazing foils and for making the brazed parts.Type: ApplicationFiled: June 3, 2008Publication date: December 25, 2008Applicant: Vacuumschmelze GmbH & Co. KGInventors: Thomas Hartmann, Dieter Nuetzel
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Patent number: 7461770Abstract: The invention proposes a brazing alloy, which can be produced in particular as a homogenous, ductile, amorphous brazing foil and consists of 2 to 20 atom % of nickel, 2 to 12 atom % of tin, 0.5 to 5.0 atom % of zinc, 6 to 16 atom % of phosphorus, remainder copper and incidental impurities. The total amount of copper, nickel, tin and zinc is between 80 and 95 atom %. The addition of more than 0.5 atom % of zinc produces excellent resistance to surface oxidation in air and/or atmospheric humidity. These brazing alloys can be used to produce excellent brazed joints.Type: GrantFiled: April 1, 2005Date of Patent: December 9, 2008Assignee: Vacuumschmelze GmbH & Co. KGInventors: Thomas Hartmann, Dieter Nuetzel
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Patent number: 7442263Abstract: The invention relates to a transductor regulator with a magnetic core which is made up of a nanocrystalline alloy which is almost free of magnetorestriction. The core has as low cyclic magnetization losses as possible and as rectangular a hysterisis cycle as possible. Said alloy has the composition: FeaCobCucM?dSixByM?z, M? representing an element from the group V, Nb, Ta, Ti, Mo, W, Zr, Hf or a combination of these and M? representing an element from the group C, P, Ge, As, Sb, In, O, N or a combination of these and the following conditions applying: a+b+c+d+x+y+z=100%, with a=100%?b?c?d?x?y?z, 0?b?15, 0.5?c?2, 0.1?d?6, 2?x?20, 2?y?18, 0?z?10 and x+y>18. The inventive transductor regulators are particularly advantageously used in motor vehicle voltage supplies, rail power supplies or in aircraft power supplies.Type: GrantFiled: September 7, 2001Date of Patent: October 28, 2008Assignee: Vacuumschmelze GmbH & Co. KGInventors: Wulf Günther, Roman Klinger, Werner Loges, Jörg Petzold
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Patent number: 7432790Abstract: The invention relates to a superconductor assembly comprising a metallic superconductor and a ceramic superconductor, which are mechanically and electrically interconnected to form a one-piece hybrid superconductor.Type: GrantFiled: March 19, 2002Date of Patent: October 7, 2008Assignee: Vacuumschmelze GmbH & Co KGInventors: Thomas J. Arndt, Bernhard Fischer, Martin Munz, Andreas Szulczyk, Manfred Thoner
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Patent number: 7432815Abstract: Disclosed are a marker for a magnetic theft protection system, comprising: (a) at least one oblong alarm strip comprising an amorphous ferromagnetic alloy; and (b) at least one oblong activation strip comprising an alloy consisting essentially of formula NiaMobXcFeRest, wherein X is one or more of the elements from the group including Cr, W and V, and wherein a, b, and c are weight percentages, such that 15% by weight?a?25% by weight, 0% by weight?b?2.8% by weight, 0% by weight?c?8% by weight; and, wherein said activation strip has a coercitive force Hc of 10 A/cm to 25 A/cm and a remanence Br of at least 1.0 T; the activation strip itself, a tag containing the activation strip and/or marker, articles containing the marker or tag, methods for making the activation strip, and methods for making the marker.Type: GrantFiled: October 1, 2007Date of Patent: October 7, 2008Assignee: VACUUMSCHMELZE GmbH & Co. KGInventors: Ottmar Roth, Hartwin Weber
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Patent number: 7400131Abstract: A current sensor comprises a magnetic module, whereby a primary conductor, a compensating winding and a magnetic field probe are magnetically coupled to each other. The primary conductor carries a current to be measured, with a driving circuit, for producing a triangular current, injected into the compensating winding. An evaluation circuit switches the output signal thereof from a first to a second output level and vice versa by a zero crossing of a signal, provided by the magnetic field probe, whereby the output signal is pulse-width modulated, depending on the intensity of the current to be measured.Type: GrantFiled: October 30, 2006Date of Patent: July 15, 2008Assignee: Vacuumschmelze GmbH & Co. KGInventor: Norbert Preusse
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Publication number: 20080099106Abstract: Disclosed are soft magnetic alloys that consist essentially of 10% by weight?Co?22% by weight, 0% by weight?V?4% by weight, 1.5% by weight?Cr?5% by weight, 1% by weight?Mn?2% by weight, 0% by weight?Mo?1% by weight, 0.5% by weight?Si?1.5% by weight, 0.1% by weight?Al?1.0% by weight, rest iron. Also disclosed are methods of making the alloys, and products containing them, such as actuator systems, electric motors, and the like.Type: ApplicationFiled: July 27, 2007Publication date: May 1, 2008Applicant: Vacuumschmelze GmbH & Co. KGInventors: Witold Pieper, Joachim Gerster
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Publication number: 20080088451Abstract: Disclosed are markers for a magnetic theft protection system, which markers contain at least one oblong alarm strip made of an amorphous ferromagnetic alloy and at least one activation strip made of a molybdenum-free semi-hard magnetic alloy consisting essentially of NiaMbFeRest, wherein M is one or more of the elements from the group including Cr, W and V, and wherein a and b are weight percentages such that 15% by weight?a?25% by weight, and 2% by weight?b?8% by weight. The activation strip has a coercive force Hc of 10 A/cm to 25 A/cm and a remanence Br of at least 0.Type: ApplicationFiled: September 7, 2007Publication date: April 17, 2008Applicant: Vacuumschmelze GmbH & Co. KGInventors: Ottmar Roth, Hartwin Weber
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Patent number: 7358716Abstract: A measuring method for measuring currents with a large dynamic range by means of a magnetic measuring module has the steps of switching into a high-current mode when a current threshold value is exceeded, and switching into a low-current mode otherwise, wherein the low-current mode has the following steps:—Feeding a first current pulse to a compensation coil, which drives a magnetic core in a first direction until magnetic saturation occurs,—measuring a first primary current value I1 after the current pulse is disconnected,—feeding a second current pulse to the compensation coil, which drives the magnetic core in a counter second direction until magnetic saturation occurs,—measuring a second primary current value I2 after the second current pulse is disconnected,—determining the corrected primary current value subsequently as an average value I=(I1+I2)/2 from the first and the second primary current values.Type: GrantFiled: January 12, 2006Date of Patent: April 15, 2008Assignee: Vacuumschmelze GmbH & Co. KGInventors: Norbert Preusse, Stefan Schaefer, Friedrich Lenhard