Patents by Inventor Joerg Petzold

Joerg Petzold 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).

  • Publication number: 20130204555
    Abstract: In order to locate a cable fault in a cable, a testing apparatus applies a test signal to the cable so as to induce an electrical oscillation. The testing apparatus includes a voltage source that generates the test signal, which e.g. ignites an electrical arc at the cable fault or applies a voltage surge to the cable, to cause the electrical oscillation. The apparatus further includes a measured signal evaluation device to measure the resulting oscillations in the time domain or the frequency domain, and carry out a spectral analysis in the frequency domain, so as to automatically determine the location of the fault preferably from the total phase rotation of the signal, the phase rotation of the reflection at the first cable end, the phase rotation of the reflection at the cable fault, and the imaginary part of the propagation constant of the signal in the cable.
    Type: Application
    Filed: February 6, 2013
    Publication date: August 8, 2013
    Inventors: Sven SCHEUSCHNER, Matthias HIRTE, Joerg PETZOLD, Thomas GEBHARDT
  • Patent number: 8344830
    Abstract: A magnet core (1) that is suitable for use in a fault current circuit breaker and that is made of a helically wound, magnetically soft band has a top (4) and a bottom (5), the top (4) and the bottom (5) being formed by side surfaces (16) of the magnetically soft band. The magnet core (1) is fixed in a protective housing (6), and there is a contact cement (11) between the bottom (5) of the magnet core (1) and an inside wall (10) of the housing for fixing the magnet core (1).
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: January 1, 2013
    Assignee: Vaccumschmelze GmbH & Co. KG
    Inventors: Joerg Petzold, Markus Brunner
  • Publication number: 20110250039
    Abstract: The invention relates to a modular carrier for receiving, storing and transporting thin planar workpieces/semi-finished products, such as wafers for photovoltaic elements, in vertical positions that are parallel to each other and uniformly spaced. This problem is solved by a modular design of the carrier. The required components are combined into three modules. The first module is the groove plate having the horizontal support arranged beneath in an angled shape. The second module is formed by the two U-shaped end plates. The third module comprises the spacer rods, which are arranged between said two U-shaped end plates and of which two in each case receive a groove plate at the top and the bottom. The groove plates and the spacer rods are used at the length L, wherein the length L is uniformly graduated. In this way, the carrier can be produced in the length L or n×L, with n always being an integer.
    Type: Application
    Filed: December 14, 2009
    Publication date: October 13, 2011
    Applicant: Q-CELLS SE
    Inventors: Joerg Petzold, Frank Wegert
  • Patent number: 7861403
    Abstract: A current transformer core has a ratio of the core outside diameter Da to the core inside diameter Di of <1.5, a saturation magnetostriction ?s of =|4| ppm, a circular hysteresis loop with 0.50=Br/Bs=0.85 and an Hcmax=20 mA/cm. The current transformer core is made of a soft magnetic iron alloy in which at least 50% of the alloy structure is occupied by fine-crystalline particles with an average particle size of 100 nm or less, and the iron-based alloy comprises, in essence, one combination.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: January 4, 2011
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Wulf Guenther, Detlef Otte, Joerg Petzold
  • Publication number: 20100265016
    Abstract: A magnet core (1) that is suitable for use in a fault current circuit breaker and that is made of a helically wound, magnetically soft band has a top (4) and a bottom (5), the top (4) and the bottom (5) being formed by side surfaces (16) of the magnetically soft band. The magnet core (1) is fixed in a protective housing (6), and there is a contact cement (11) between the bottom (5) of the magnet core (1) and an inside wall (10) of the housing for fixing the magnet core (1).
    Type: Application
    Filed: July 17, 2008
    Publication date: October 21, 2010
    Applicant: Vacuumschmelze GmbH & Co. kg
    Inventors: Joerg Petzold, Markus Brunner
  • Publication number: 20080092366
    Abstract: A current transformer core has a ratio of the core outside diameter Da to the core inside diameter Di of <1.5, a saturation magnetostriction ?s of=|4| ppm, a circular hysteresis loop with 0.50=Br/Bs=0.85 and an Hcmax=20 mA/cm. The current transformer core is made of a soft magnetic iron alloy in which at least 50% of the alloy structure is occupied by fine-crystalline particles with an average particle size of 100 nm or less, and the iron-based alloy comprises, in essence, one combination.
    Type: Application
    Filed: October 23, 2007
    Publication date: April 24, 2008
    Inventors: Wulf Guenther, Detlef Otte, Joerg Petzold
  • Patent number: 7358844
    Abstract: A current transformer core has a ratio of the core outside diameter Da to the core inside diameter Di of <1.5, a saturation magnetostriction ?s of =|4| ppm, a circular hysteresis loop with 0.50=Br/Bs=0.85 and an Hcmax=20 mA/cm. The current transformer core is made of a soft magnetic iron alloy in which at least 50% of the alloy structure is occupied by fine-crystalline particles with an average particle size of 100 nm or less, and the iron-based alloy comprises, in essence, one combination.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: April 15, 2008
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Wulf Guenther, Detlef Otte, Joerg Petzold
  • Publication number: 20070126546
    Abstract: A current transformer core has a ratio of the core outside diameter Da to the core inside diameter Di of <1.5, a saturation magnetostriction ?s of=|4| ppm, a circular hysteresis loop with 0.50=Br/Bs 0.85 and an Hcmax=20 mA/cm. The current transformer core is made of a soft magnetic iron alloy in which at least 50% of the alloy structure is occupied by fine-crystalline particles with an average particle size of 100 nm or less, and the iron-based alloy comprises, in essence, one combination.
    Type: Application
    Filed: November 17, 2006
    Publication date: June 7, 2007
    Inventors: Wulf Guenther, Detlef Otte, Joerg Petzold
  • Patent number: 7042310
    Abstract: The invention relates to a high-pass branch (7) of a frequency separating filter for ADSL systems comprising inductive components (11, 14) which dispose of magnet cores made of a soft magnetic amorphous or nanocrystalline. As a result, frequency separating filters are provided which comprise small structural shapes and which have especially beneficial properties in the relevant frequency and temperature range.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: May 9, 2006
    Assignee: Vacuumschmelze GmbH
    Inventors: Joerg Petzold, Johannes Beichler, Dirk Heumann
  • Patent number: 6563411
    Abstract: A current transformer for alternating current with direct current components is proposed, consisting of at least one transformer core with a primary winding and at least one secondary winding to which a burden resistor is connected in parallel and terminates a secondary circuit with low resistance. The transformer core comprises a closed ring core with no air gap produced from a strip made of an amorphous ferromagnetic alloy that is practically free from magnetostriction and has permeability &mgr;<1400. Particularly appropriate alloys for such a strip ring core have been shown to be cobalt-based alloys consisting essentially of the formula Coa(Fe1-xMnx)bNicXdSieBfCg. where X is at least one of the elements V, Nb, Ta, Cr, Mo, W, Ge and P, a-g are given in atomic % and whereby a, b, c, d, e, f, g and x satisfy the following conditions: 40≦a≦82; 2≦b≦10; 0≦c≦30; 0≦d≦5; 0≦e≦15; 7≦f≦26; 0≦g≦3; with 15≦d+e+f+g≦30 and 0≦x<1.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: May 13, 2003
    Assignee: Vacuumschmelze GmbH
    Inventors: Detlef Otte, Joerg Petzold
  • Patent number: 5074932
    Abstract: In an ISDN digital communications system, the transmission between the network termination and the terminal equipment ensues via what is referred to as the S.sub.o interface, on the basis of interface transformers. Since the power supply of the terminal equipment likewise partly ensues via these transformers, a current asymmetry in the lines results in a pre-magnetization of the transformers. Thus, the ISDN demands made of the transformers must also be satisfied given a DC pre-magnetization. Compact transformers having a simple winding format that satisfy the ISDN demands are set forth, the transformers utilizing a magnetic core having a fine-crystalline iron-based alloy with an iron part of more than 60 atomic %, the structure thereof being more than 50% fine-crystalline grains having a grain size of less than 100 nm and having a remanence ratio of less than 0.2 and a permeability in the range from 20,000 to 50,000, and an inductance of less than 100 pF.
    Type: Grant
    Filed: March 23, 1990
    Date of Patent: December 24, 1991
    Assignee: Vacuumschmelze GmbH
    Inventors: Johannes Binkofski, Diemtar Graetzer, Giselher Herzer, Hans-Reiner Hilzinger, Joerg Petzold