Patents by Inventor Nils Krumme
Nils Krumme 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: 8299670Abstract: Disclosed is a device having a rotor that is adapted to be rotated relative to a stator, with hydrostatic bearings being used as radial bearings and as axial bearings of the rotor. A motor is provided as a direct drive, having a ring-shaped part and also a plurality of motor segments which are in magnetic engagement with the ring-shaped part. In order to generate additional bearing load force, additional motor segments having permanent magnets are provided. For reasons of safety, axial support rolls are provided which, when the motor has attained a given bearing load force, are spaced from a running face of the rotor, and which, in a case of too low or an absence of load force, prevent a displacement of the rotor away from the axial bearings.Type: GrantFiled: August 10, 2009Date of Patent: October 30, 2012Assignee: Schleifring und Apparatebau GmbHInventor: Nils Krumme
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Patent number: 8242639Abstract: An inductive rotary joint for computer tomographs includes an inverter and an inductive rotary coupler. A primary winding of the inductive rotary coupler is fed by the inverter via a line, with energy transmitted by the inductive rotary coupler being supplied to a load through a secondary winding. The line includes at least two coaxial lines, each coaxial line having an outer conductor or shield with the two outer conductors or shields being interconnected along a major part of their length, and an inner conductor, with the inner conductors being supplied by the inverter with voltages, the sum of which is substantially equal to zero.Type: GrantFiled: October 8, 2009Date of Patent: August 14, 2012Assignee: Schleifring und Apparatebau GmbHInventors: Nils Krumme, Michael Tekloth, Michael Bley, Arno Zimpfer
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Patent number: 8129865Abstract: An inductive rotary joint for non-contact transmission of electrical energy between a stationary part and a rotating part of the rotary joint comprises a power generator for generating an alternating voltage or an alternating current, which feeds a load by means of a rotatable power transmitter. An electrical parameter on the primary side of the power transmitter is determined with a measurement means, and from this, the condition of another electrical parameter at the load is approximated by means of a functional unit. Regulation of the power generator is effected with this approximated value.Type: GrantFiled: May 5, 2009Date of Patent: March 6, 2012Assignee: Schleifring und Apparatebau GmbHInventors: Nils Krumme, Georg Lohr, Herbert Weithmann, Michael Bley
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Publication number: 20110248727Abstract: A method is disclosed for compensation of system tolerances in an inductive coupler which includes a power generator that feeds an alternating current into a series resonance circuit formed by a resonance capacitor and an inductive rotating transmission device. First, a brief sequence of at least one period of an alternating current is fed by the power generator into the series resonance circuit. Then the series resonance circuit is short-circuited. A first resonance frequency is measured. Then a longer sequence having a plurality of periods of an alternating-current voltage is generated by the power generator, so that a given small voltage is built up at the load. Now a second resonance frequency is measured whilst the resonance circuit is short-circuited. Then at least one correcting variable for the power generator is determined from the two resonance frequencies.Type: ApplicationFiled: March 10, 2011Publication date: October 13, 2011Applicant: SCHLEIFRING UND APPARATEBAU GMBHInventors: Nils Krumme, Arno Zimpfer, Stefan Fischer
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Publication number: 20110206319Abstract: A non-contacting rotary joint for transmitting an input signal guided within an input optical waveguide has an electrical transmission line and a probe. The transmission line has an even number N?4 of equal length transmission line segments. The optical waveguide is connected to an optical distribution network which has an optical power splitter for splitting the input signal into N or N/2 individual signals of equal optical power. These signals are forwarded to opto-electrical converters to generate electrical signals for driving the electrical transmission line. The lengths of the optical transmission lines are adjusted so that the propagation time of the optical signal from the end of the input optical waveguide to the end of each individual optical transmission line is approximately the same.Type: ApplicationFiled: February 16, 2011Publication date: August 25, 2011Inventor: Nils Krumme
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Patent number: 7899149Abstract: A non-contacting data path for rotating data transmission of digital data from a data source to a data sink includes at least one clock modulator. A data clock frequency is specifically modulated with the clock modulator to widen a spectrum of data signals and achieve improved EMC properties in measurements according to valid EMC Standards. Owing to use of a plurality of clock modulators along a course of a non-contacting rotary transmission path, signal jitter caused by individual components of the data transmission path is in each case replaced by artificially caused jitter of clock modulation. Thus, data transmission with defined jitter and defined signal quality can be achieved.Type: GrantFiled: September 23, 2009Date of Patent: March 1, 2011Assignee: Schleifring und Apparatebau GmbHInventors: Nils Krumme, Georg Lohr, Stephan Lindorfer
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Patent number: 7880569Abstract: A rotating data transmission device for computer tomographs, for transmission from a rotating part to a stationary part that is rotatably supported relative to the rotating part, comprises at least a rotating high-speed data transmitter unit, a rotating high-speed transmission line, a stationary high-speed data receiver unit. The rotating high-speed data transmitter unit contains a rotating pattern controller and the stationary high-speed data receiver unit contains a stationary data analyzer for analyzing patterns generated by the rotating pattern controller. Furthermore unit controllers are provided to control the units.Type: GrantFiled: November 15, 2006Date of Patent: February 1, 2011Assignees: Schleifring und Apparatebau GmbH, Siemens AktiengesellschaftInventors: Nils Krumme, Stephan Lindorfer, Ulrich Bertl, Stefan Popescu
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Patent number: 7724119Abstract: The invention relates to an inductive rotary joint having at least two component parts which each comprise a coil for introducing power and/or taking-up power. In order that the rotary joint may be able to withstand even high mechanical load, at least one of the component parts is made of a synthetic resin containing soft magnetic particles, and the coil of the one part is at least partially located in the synthetic resin.Type: GrantFiled: May 3, 2006Date of Patent: May 25, 2010Assignee: Schleifring und Apparatebau GmbHInventors: Nils Krumme, Herbert Weithmann, Harry Schilling, Georg Lohr
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Publication number: 20100090536Abstract: An inductive rotary joint for computer tomographs includes an inverter and an inductive rotary coupler. A primary winding of the inductive rotary coupler is fed by the inverter via a line, with energy transmitted by the inductive rotary coupler being supplied to a load through a secondary winding. The line includes at least two coaxial lines, each coaxial line having an outer conductor or shield with the two outer conductors or shields being interconnected along a major part of their length, and an inner conductor, with the inner conductors being supplied by the inverter with voltages, the sum of which is substantially equal to zero.Type: ApplicationFiled: October 8, 2009Publication date: April 15, 2010Inventors: Nils Krumme, Michael Tekloth, Michael Bley, Arno Zimpfer
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Publication number: 20100091935Abstract: A non-contacting data path for rotating data transmission of digital data from a data source to a data sink includes at least one clock modulator. A data clock frequency is specifically modulated with the clock modulator to widen a spectrum of data signals and achieve improved EMC properties in measurements according to valid EMC Standards. Owing to use of a plurality of clock modulators along a course of a non-contacting rotary transmission path, signal jitter caused by individual components of the data transmission path is in each case replaced by artificially caused jitter of clock modulation. Thus, data transmission with defined jitter and defined signal quality can be achieved.Type: ApplicationFiled: September 23, 2009Publication date: April 15, 2010Inventors: Nils Krumme, Georg Lohr, Stephan Lindorfer
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Publication number: 20100034492Abstract: Disclosed is a device having a rotor that is adapted to be rotated relative to a stator, with hydrostatic bearings being used as radial bearings and as axial bearings of the rotor. A motor is provided as a direct drive, having a ring-shaped part and also a plurality of motor segments which are in magnetic engagement with the ring-shaped part. In order to generate additional bearing load force, additional motor segments having permanent magnets are provided. For reasons of safety, axial support rolls are provided which, when the motor has attained a given bearing load force, are spaced from a running face of the rotor, and which, in a case of too low or an absence of load force, prevent a displacement of the rotor away from the axial bearings.Type: ApplicationFiled: August 10, 2009Publication date: February 11, 2010Inventor: Nils Krumme
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Patent number: 7634046Abstract: A computer tomograph system comprises a rotating part for accommodating at least one X-ray tube and a detector arrangement, and a stationary part rotatably supporting the rotating part, and comprising a DC-to-AC converters for generating an alternating current for supplying current to a conductor arrangement. To supply energy to the rotating part, the rotating part comprises at least one inductive coupler for engaging, exclusively in dependence upon position, with a section of the entire length of the conductor arrangement, and for coupling electrical energy out of the conductor arrangement. Alternatively, the conductor arrangement may be disposed on the rotating part, and the inductive coupler may be disposed on the stationary part.Type: GrantFiled: November 27, 2003Date of Patent: December 15, 2009Assignee: Schleifring und Apparatebau GmbHInventor: Nils Krumme
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Publication number: 20090296441Abstract: A semiconductor power switch comprises at least a first IGBT and a second IGBT. The collectors of the first and second IGBTs are connected to each other, and the emitters of the first and second IGBTs are connected to each other. The first IGBT is an IGBT type with a comparatively low collector-emitter on-voltage and a comparatively high turn-on or turn-off switching energy. In contrast thereto, the second IGBT is an IGBT type with a comparatively high collector-emitter on-voltage and a comparatively low turn-on or turn-off switching energy. Both IGBTs receive gate signals from a control circuit for switching the power switch on during a first time interval and switching the power switch off during a second time interval. The control circuit is designed to supply an on-signal to the second IGBT during the whole first time interval and another on-signal to the first IGBT during only a part of the first time interval, which is less than the whole.Type: ApplicationFiled: May 5, 2009Publication date: December 3, 2009Applicant: SCHLEIFRING UND APPARATEBAU GMBHInventors: Michael Klemt, Nils Krumme
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Publication number: 20090279829Abstract: According to one embodiment, an optical rotary joint comprises a first collimator arrangement for coupling-on first light-waveguides, and a second collimator arrangement for coupling-on second light-waveguides, with the latter being rotatably supported relative to the first collimator arrangement about a rotation axis. A Dove prism is provided between the first and second collimator arrangements as a derotating element. The first and second collimator arrangements have at least one micro-lens array on which light-waveguides with associated ferrules are disposed. In order to avoid tensile forces from arising in the arrangement, or as a result of individual ferrules becoming interconnected by an applied adhesive, trenches, barriers, or also coatings are provided between the individual ferrules.Type: ApplicationFiled: May 7, 2009Publication date: November 12, 2009Applicant: Schleifring und Apparatebau GmbHInventors: Gregor Popp, Nils Krumme
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Publication number: 20090276199Abstract: An inductive rotary joint for non-contact transmission of electrical energy between a stationary part and a rotating part of the rotary joint comprises a power generator for generating an alternating voltage or an alternating current, which feeds a load by means of a rotatable power transmitter. An electrical parameter on the primary side of the power transmitter is determined with a measurement means, and from this, the condition of another electrical parameter at the load is approximated by means of a functional unit. Regulation of the power generator is effected with this approximated value.Type: ApplicationFiled: May 5, 2009Publication date: November 5, 2009Applicant: Schleifring und Apparatebau GmbHInventors: Nils Krumme, Georg Lohr, Herbert Weithmann, Michael Bley
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Patent number: 7599445Abstract: A device for transmission of digital signals between two units movable relative to each other, particularly with non-contacting rotating data transmission devices, comprises an encoder on a transmitter side along a signal path for conforming a coding of the digital signals to transmission characteristic of a transmission path, so that a given spectral distribution of signals is attained. An optional decoder on a receiver side restores original signals, so that the coding remains concealed, but a substantially more reliable transmission is achieved.Type: GrantFiled: March 25, 2005Date of Patent: October 6, 2009Assignee: Schleifring und Apparatebau GmbHInventors: Harry Schilling, Nils Krumme, Georg Lohr
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Patent number: 7547212Abstract: A device such as a slide track or a slipring for transmitting electrical energy or signals between at least two units that are rotatable relative to each other along a path of rotation comprises at least one slide track formed as a closed circuit of electrically conducting material disposed along the path of rotation, and at least one tap movable along the slide track for coupling electrical signals into the slide track from one of the units, or coupling electrical signals out of the slide track to one of the units. In order to reduce a superposition of signals that have traveled along different directions along the closed circuit, the at least one slide track is configured to have electric losses resulting in an amplitude of an electrical signal coupled into the slide track being reduced by at least 6 dB, preferably 10 dB, during a passage of the signal along one entire length of the slide track.Type: GrantFiled: October 28, 2005Date of Patent: June 16, 2009Assignee: Schleifring und Apparatebau GmbHInventor: Nils Krumme
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Patent number: 7466794Abstract: A device in accordance with the invention for transmitting data between a rotating part and a stationary part of a computer tomograph comprises at least two couplers and receivers connected therewith for receiving signals from a transmission conductor arrangement. Using an evaluation means, a signal is selected from signals received by the receiver on the basis of at least one given quality criterion.Type: GrantFiled: September 27, 2007Date of Patent: December 16, 2008Assignee: Schleifring und Apparatebau GmbHInventor: Nils Krumme
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Patent number: 7466791Abstract: A device for transmitting data between a rotating part and a stationary part of a computer tomograph, in which the rotating part comprises at least one data source; a conductor structure; and at least one first transmitter for energizing the conductor structure; and the stationary part comprises at least one data sink for evaluating data; at least one receiver; and a receiver coupler for tapping off signals from the conductor structure and supplying the signals to the at least one receiver; is improved to reduce radiation of high-frequency signals.Type: GrantFiled: May 11, 2006Date of Patent: December 16, 2008Assignee: Schleifring und Apparatebau GmbHInventor: Nils Krumme
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Publication number: 20080252336Abstract: A device for non-contacting interrogation, without auxiliary power, of system states of a part that is rotatable relative to a fixed part comprises a coil on the rotatable part and a coil on the fixed part. The coils are mutually coupled, one being fed by a signal generator generating different frequencies, whilst the other coil is supplemented with at least one capacitance to form a resonance circuit. Further impedances can be added by means of switch elements to change a resonance frequency and form an interrogation circuit. By determining a resonance frequency on a signal generator side it is possible to draw conclusions about an impedance on an opposite side and to assign this to a switch element which is closed.Type: ApplicationFiled: May 6, 2008Publication date: October 16, 2008Applicant: SCHLEIFRING UND APPARATEBAU GMBHInventor: Nils Krumme