Angularly Movable Patents (Class 336/120)
  • Patent number: 10352326
    Abstract: The invention relates to an assembly on an engine, which comprises a first and a second piece mounted so as to rotate relative to one another. A connecting device is provided between such pieces. It comprises a first annular part defining a flange fixed to the first piece a second annular part extending substantially parallel with the axis of rotation of the engine and studs connecting the first and second annular parts together. An interface for the rotational sliding about said axis is positioned between the second annular part and the second piece. The second annular part is sectorized.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: July 16, 2019
    Assignee: Safran Aircraft Engines
    Inventors: Grégory Nicolas Gérald Gillant, Aline Bourdais, Olivier Lefebvre
  • Patent number: 10186373
    Abstract: In a first aspect, the disclosure features apparatuses for wireless power transfer, the apparatuses including a plurality of magnetic elements joined together to form a magnetic component extending in a plane, where discontinuities in the magnetic component between adjacent magnetic elements define gaps in the magnetic component, a coil including one or more loops of conductive material positioned, at least in part, on a first side of the plane. The apparatuses include a conductive shield positioned on a second side of the plane and which includes one or more openings positioned relative to the gaps.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: January 22, 2019
    Assignee: WiTricity Corporation
    Inventor: Andre B. Kurs
  • Patent number: 10165685
    Abstract: In a printed circuit board (1) comprising a plurality of insulating layers and conductive layers, and comprising at least one cavity (7) at least one electromagnetic coil (8) is arranged on an outer layer (4) of the printed circuit board (1) and cooperates with a permanent magnet (6) arranged inside the at least one cavity (7).
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: December 25, 2018
    Inventors: Markus Leitgeb, Johannes Stahr
  • Patent number: 10147539
    Abstract: A magnetic core for a rotary transformer, the core including bars arranged along a longitudinal axis of the core and at least two cheeks that are axially spaced apart from each other and that extend radially from the bars in order to cooperate with the bars to define at least one annular groove for receiving a toroidal coil, each cheek being made up of a packet of circular magnetic laminations that are arranged radially, and each bar being made up of a plurality of stacks of magnetic laminations, the stacks of laminations forming the bars being arranged axially and being assembled to the packets of circular laminations while being angularly spaced apart from one another around the longitudinal axis of the core.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: December 4, 2018
    Assignee: Safran Electrical & Power
    Inventors: Jean-Michel Chastagnier, Frederic Meer
  • Patent number: 10088502
    Abstract: A test assembly adapted to test a semiconductor device is provided. The test assembly includes a main circuit board, a space transformer, an intermediary supporting element, an adhesive element, a plurality of electrical connection elements and a plurality of test probes. The space transformer is disposed on the main circuit board and has a first surface and a second surface opposite to the first surface. The first surface faces the main circuit board. The intermediary supporting element is disposed between the main circuit board and the first surface. The adhesive element is disposed between the intermediary supporting element and the first surface. The space transformer is attached to the intermediary supporting element through the adhesive element. The electrical connection elements are disposed between the main circuit board and the first surface.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: October 2, 2018
    Assignee: STAR TECHNOLOGIES, INC.
    Inventors: Ho Yeh Chen, Choon Leong Lou
  • Patent number: 10078026
    Abstract: A multi-component force-torque sensing device contains force- and torque-sensitive elements mounted on a common base so that the axis of rotation of the measured torque coincides with the direction of action of the force being measured. The force and the torque are applied to a test specimen holder simultaneously. For reducing cross-talk between the sensitive elements installed on the base the test specimen holder is connected to the sensitive elements via a cross-talk reducing member with respective adapters which translate the force and the torque to the sensitive elements independently, without affecting or disturbing each other measurements.
    Type: Grant
    Filed: December 31, 2016
    Date of Patent: September 18, 2018
    Inventor: Michael Vinogradov-Nurenberg
  • Patent number: 10029791
    Abstract: A weapon interface system, and methods of operating the same. The weapon interface system is coupled to an electrical interconnection system of a delivery platform and a weapon system coupled to a rack system. The weapon interface system includes a translation interface configured to provide an interface between the electrical interconnection system and an inductive power and data circuit. The weapon interface system also includes a weapon coupler, coupled to the translation interface, configured to provide an inductive coupling to the weapon system to provide mission information thereto.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: July 24, 2018
    Assignee: Lone Star IP Holdings, LP
    Inventors: Steven D. Roemerman, John P. Volpi, Joseph Edward Tepera
  • Patent number: 10008899
    Abstract: An electric motor includes a stator; an annular end cap, fastened at a first end of the stator; a threaded seat that is mounted at an outward end face of the annular end cap for receiving a first gas foil thrust bearing; a shaft, inserted through the stator, through the annular end cap, and through the threaded seat; a thrust runner mounted at an end of said shaft adjacent the threaded seat; a first gas foil thrust bearing that is mounted into the threaded seat, adjacent a face of the thrust runner facing the stator; a bearing cap that has a threaded fitting by which it is attached onto the threaded seat; and a second gas foil thrust bearing that is mounted into the bearing cap adjacent to a face of the thrust runner opposite the first gas foil thrust bearing.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: June 26, 2018
    Assignee: R&D Dynamics Corporation
    Inventors: Alexander R. Nelson, Charles W. Buckley, Giridhari L. Agrawal
  • Patent number: 9912167
    Abstract: A system is provided for inductive power transmission. The system includes a primary unit having a primary coil and a secondary unit having a secondary coil. The primary coil generates a magnetic transmission field in a transmission area between the primary unit and the secondary unit. The system includes a metal detector, and the metal detector is suitable for the detection of a metallic object situated in the transmission area.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: March 6, 2018
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Josef Krammer, Jens Berger
  • Patent number: 9892849
    Abstract: In a first aspect, the disclosure features apparatuses for wireless power transfer, the apparatuses including a plurality of magnetic elements joined together to form a magnetic component extending in a plane, where discontinuities in the magnetic component between adjacent magnetic elements define gaps in the magnetic component, a coil including one or more loops of conductive material positioned, at least in part, on a first side of the plane. The apparatuses include a conductive shield positioned on a second side of the plane and which includes one or more openings positioned relative to the gaps.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: February 13, 2018
    Assignee: WiTricity Corporation
    Inventor: Andre B. Kurs
  • Patent number: 9607758
    Abstract: A three-phase transformer including a primary portion and a secondary portion, the primary portion including a first body made of ferromagnetic material and primary coils, the secondary portion including a second body made of ferromagnetic material and secondary coils, the first body defining a first annular slot of axis A and a second annular slot of axis A. The primary coils include a first toroidal coil of axis A in the first slot, a second toroidal coil of axis A in the first slot, a third toroidal coil of axis A in the second slot, and a fourth toroidal coil of axis A in the second slot, the second coil and the third coil being connected in series.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: March 28, 2017
    Assignee: LABINAL POWER SYSTEMS
    Inventor: Cedric Duval
  • Patent number: 9424978
    Abstract: A three-phase transformer including a primary portion and a secondary portion, the primary portion including a first body made of ferromagnetic material and primary coils, the secondary portion including a second body made of ferromagnetic material and secondary coils, the first body defining a first annular slot of axis A and a second annular slot of axis A, the primary coils including a first toroidal coil of axis A in the first slot, a second toroidal coil of axis A in the second slot, and one or more third toroidal coils connected in series, the third coils being wound around one of the legs, and passing via slots in the leg.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: August 23, 2016
    Assignee: LABINAL POWER SYSTEMS
    Inventor: Cedric Duval
  • Patent number: 9424987
    Abstract: A three-phase/two-phase rotary transformer, includes a first single-phase rotary transformer and a second single-phase rotary transformer, the first transformer including a first body defining a first slot, a first coil in the first slot, a second body defining a second slot, and a second coil in the second slot, the second transformer including a third body defining a third slot, a third coil in the third slot, a fourth body defining a fourth slot, and a fourth coil in the fourth slot, wherein one terminal of the first coil is connected to the midpoint of the third coil, the first body, the first coil, the third body, and the third coil forming a three-phase portion of the transformer, the second body, the second coil, the fourth body, and said fourth coil forming a two-phase portion of the transformer.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: August 23, 2016
    Assignee: LABINAL POWER SYSTEMS
    Inventor: Cedric Duval
  • Patent number: 9178442
    Abstract: A three-phase/two-phase rotary transformer including a three-phase portion and a two-phase portion that are movable in rotation relative to each other about an axis A. The three-phase portion includes a first body made of ferromagnetic material and three-phase coils, the two-phase portion including a second body made of ferromagnetic material and two-phase coils. The second body defines a first annular slot of axis A and a second annular slot of axis A, the two-phase coils including a first toroidal coil of axis A in the first slot, a second toroidal coil of axis A in the first slot, a third toroidal coil of axis A in the second slot, and a fourth toroidal coil of axis A in the second slot, the first coil and the fourth coil being connected in series, the second coil and the third coil being connected in series.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: November 3, 2015
    Assignee: LABINAL POWER SYSTEMS
    Inventor: Cedric Duval
  • Patent number: 9067684
    Abstract: An electrical power supply device (10) comprising a pole (11), said pole (11) having a non-rotary casing (15) and a rotary casing (12) provided with fastener means (14) for fastening to a mast. The pole (11) includes a non-rotary converter (20) fastened to the non-rotary casing (15) and generating AC at a frequency higher than one kilohertz. The pole also includes a rotary transformer (25), said rotary transformer (25) having a primary member (26) secured to the non-rotary casing (15) and a secondary member (27) secured to the rotary casing (12), the primary member (26) being connected to the non-rotary converter (20) to receive said AC, and the secondary member (27) being suitable for electrically powering equipment (100) of a rotor (2).
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: June 30, 2015
    Assignee: Airbus Helicopters
    Inventors: Serge Giordano, Vincent Bourget
  • Publication number: 20150116067
    Abstract: A rotary three-phase transformer with free linked fluxes including a first portion and a second portion that are movable in rotation relative to each other about an axis A. A first body defines a first annular slot of axis A, a second annular slot of axis A, a third annular slot of axis A, and a fourth annular slot of axis A. The coils of the first portion include a first toroidal coil of axis A in the first slot, a second toroidal coil of axis A in the second slot, a third toroidal coil of axis A in the second slot, a fourth toroidal coil of axis A in the third slot, a fifth toroidal coil of axis A in the third slot, and a sixth toroidal coil of axis A in the fourth slot.
    Type: Application
    Filed: May 3, 2013
    Publication date: April 30, 2015
    Applicant: LABINAL POWER SYSTEMS
    Inventor: Cedric Duval
  • Patent number: 8963669
    Abstract: Power swivel for transmitting electrical power from a first terminal to a second terminal, includes a central part with a huh and an outer ring of a magnetic material, coaxial with and surrounding the hub, the outer ring and central part being rotatable relative to one another around a vertical axis, at least two radial arms of a magnetic material projecting from the hub or from the outer ring, adjacent arms being spaced-apart, each arm carrying a conductor wound around the arm to form a coil for generating a magnetic flux along a radial flux path through the arm, the conductors being connected to the first terminal, wherein the outer ring or the hub has a cylindrical surface at close proximity to free ends of the arms, a plurality of axially extending conductors being distributed along the circumference of the outer ring or hub at or near the cylindrical surface.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: February 24, 2015
    Assignee: Single Buoy Moorings Inc.
    Inventor: Mauro Bedini
  • Publication number: 20140340185
    Abstract: A rotor is rotatable on an axis within a stator. The rotor and stator each have facing coupled magnetic fields formed by electric coils positioned to produce axial force and radial magnetic filed. Stacked laminations are positioned to extend along the length of the rotor axis and the planes of the laminations lie parallel to the axis. There are several lamination packs arranged around both the rotor and the stator so as to shape the inter-engaging magnetic fields for maximum coupling across the rotor/stator airgap with minimum eddy current losses in the laminations. In this way, electric power is transmitted across a rotating coupling without rubbing or other wear contact to provide a long life.
    Type: Application
    Filed: August 15, 2012
    Publication date: November 20, 2014
    Inventors: Pierce Verleur, Alexander Ghibu, Saeed Alipour
  • Patent number: 8854168
    Abstract: Power swivel for transmitting electrical power from a first terminal to a second terminal, includes a central part with a hub and an outer ring of a magnetic material, coaxial with and surrounding the hub, the outer ring and central part being rotatable relative to one another around a vertical axis, at least two radial arms of a magnetic material projecting from the hub or from the outer ring, adjacent arms being spaced-apart, each arm carrying a conductor wound around the arm to form a coil for generating a magnetic flux along a radial flux path through the arm, the conductors being connected to the first terminal, wherein the outer ring or the hub has a cylindrical surface at close proximity to free ends of the arms, a plurality of axially extending conductors being distributed along the circumference of the outer ring or hub at or near the cylindrical surface.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: October 7, 2014
    Assignee: Single Buoy Moorings Inc.
    Inventor: Mauro Bedini
  • Publication number: 20140102202
    Abstract: The rotary transformer 5 includes a plate-shaped stator 51 having a coil arranged on one surface thereof, and a plate-shaped rotator 52 having a coil arranged on one surface thereof, in which the respective coil-arranged surfaces are disposed to face with each other so that signal transmission in a frequency range of 1 to 10 MHz is performed between the coils. The stator includes a substrate 512 on which a plurality of one-turn coils are formed into a concentric shape, and a supporting member 513. The rotator includes a substrate 522 on which one-turn coils 521 of same number are formed into a concentric shape, and a supporting member 523. Air or a material M which is an insulator and has a relative magnetic permeability substantially equal to 1 is lying between the substrate 512 and the supporting member 513, and between the substrate 522 and the supporting member 523.
    Type: Application
    Filed: April 13, 2012
    Publication date: April 17, 2014
    Inventors: Shoji Shibata, Yoichi Fujikake, Kunihiko Hatabara, Michiaki Ishihara, Sohken Mitsui
  • Patent number: 8567281
    Abstract: A rotating device includes a communication unit including a transmitting portion having a first ring-shaped coil, a first ring-shaped magnetic body covering the first ring-shaped coil and a first terminal connected to the first ring-shaped coil, and a receiving portion having a second ring-shaped coil, a second ring-shaped magnetic body covering the second ring-shaped coil and a second terminal connected to the second ring-shaped coil, and a bearing connecting a hollow fixed portion to a hollow rotating portion.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: October 29, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Takeshi Nakajima
  • Patent number: 8542085
    Abstract: A high frequency rotary transformer for an electrical machine includes a primary transformer component having a primary transformer winding, and a secondary transformer component having a secondary transformer winding. The primary transformer winding is configured to be coupled to a DC power source via a DC to AC converter. The secondary transformer winding is configured to be coupled to a winding of the rotor. Each of the primary and secondary transformer components are mechanically coupled to either the stator or the rotor. The secondary transformer component is configured to rotate with respect to the primary transformer component to produce a magnetic flux via the primary transformer winding and the secondary transformer winding.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: September 24, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Constantin C. Stancu, Peter J. Savagian, Khwaja M. Rahman, Robert T. Dawsey, Erik Hatch
  • Publication number: 20130187740
    Abstract: Rotating power transformer having stationary and rotating parts. At least one of these parts includes a plurality of transformer segments preferably made of plastic material. Rectangularly shaped soft magnetic cores are held within the transformer segments together with at least one winding located in the soft magnetic cores, thereby facilitating simple and efficient assembly of the rotating power transformer.
    Type: Application
    Filed: March 7, 2013
    Publication date: July 25, 2013
    Inventors: Philippe Loiselle, Jurgen Scherber, Nils Krumme
  • Patent number: 8405480
    Abstract: An electrical assembly is provided. The electrical assembly includes a ring having at least two annular segments. Each annular segment includes a first portion and a second portion. The second portion tapers from the first portion toward an end of the second portion to define a circumferential cross-sectional area of the ring that is substantially constant along a radius of the electrical assembly. At least one winding is coupled about the ring.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: March 26, 2013
    Assignee: General Electric Company
    Inventors: Alexander Felix Fiseni, Jan Hemmelmann, Stefan Brandhoff
  • Patent number: 8350655
    Abstract: Axisymmetric solid of revolution derivable from section at FIG. 5 is generally toroidal with electric current(s) in windings 110, 160 preferably flowing circumferentially along major circle(s) during power coupling device operation. Current(s) in windings 110, 160; current(s) in half-shields 120, 170; and the volume of space swept out by shield airgap(s) 101 emerge from plane of paper perpendicularly at FIG. 5 but as these emerge therefrom they curve to follow toroidal major circle(s). Cores 115, 165 preferably shunt and align magnetic flux such that magnetic field lines escape therefrom primarily only in region(s) of core airgap(s) and such that magnetic flux loops lie in planes of toroidal minor circle(s).
    Type: Grant
    Filed: January 29, 2007
    Date of Patent: January 8, 2013
    Assignee: Analogic Corporation
    Inventor: John M. Dobbs
  • Patent number: 8350653
    Abstract: The present invention relates to a connector system that provides the transfer of electrical power and/or data communications signals between two systems. The connector has no conductive electrical connection and can operate independently of angular orientation.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: January 8, 2013
    Assignee: WFS Technologies Ltd.
    Inventors: Mark Rhodes, Brendan Hyland, Alexander Ballantyne
  • Publication number: 20120280777
    Abstract: A rotary transformer configured to be installed about a rotatably movable shaft, the rotary transformer including, an annular inner core and an annular outer core for transmitting electrical energy via electromagnetic induction between the inner core and the outer core, which are coaxially mounted such that an inner surface of the outer core is capable of rotating opposite an outer surface of the inner core, wherein the inner core consists of a plurality of inner-core disjointed portions, which are assembled together by a first attachment, and wherein the outer core consists of a plurality of outer-core disjointed portions which are assembled together by a second attachment.
    Type: Application
    Filed: November 30, 2010
    Publication date: November 8, 2012
    Applicant: Hispano-Suiza
    Inventor: Jean-Albert Paul Marc Robert
  • Patent number: 8228010
    Abstract: An apparatus for transmission of electrical power includes an AC voltage source configured to produce AC voltage. A stator includes a primary winding arrangement electrically fed from the AC voltage source, the primary winding arrangement having at least two primary windings. A rotor includes a secondary winding arrangement inductively coupled to the primary winding arrangement of the stator, the rotor being rotatable in a rotation direction about a rotation axis. The rotation axis does not pass through the at least two primary windings, and the at least two primary windings each extend over a predetermined sector with respect to the rotation direction and are disposed offset with respect to one another with in the rotation direction.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: July 24, 2012
    Assignee: Alstom Technology Ltd
    Inventor: Hossein Safari Zadeh
  • Publication number: 20120133468
    Abstract: Power swivel for transmitting electrical power from a first terminal to a second terminal, includes a central part with a hub and an outer ring of a magnetic material, coaxial with and surrounding the hub, the outer ring and central part being rotatable relative to one another around a vertical axis, at least two radial arms of a magnetic material projecting from the hub or from the outer ring, adjacent arms being spaced-apart, each arm carrying a conductor wound around the arm to form a coil for generating a magnetic flux along a radial flux path through the arm, the conductors being connected to the first terminal, wherein the outer ring or the hub has a cylindrical surface at close proximity to free ends of the arms, a plurality of axially extending conductors being distributed along the circumference of the outer ring or hub at or near the cylindrical surface.
    Type: Application
    Filed: July 2, 2010
    Publication date: May 31, 2012
    Applicant: SINGLE BUOY MOORINGS INC.
    Inventor: Mauro Bedini
  • Patent number: 8166844
    Abstract: A rotating device includes a communication unit including a transmitting portion having a first ring-shaped coil, a first ring-shaped magnetic body covering the first ring-shaped coil and a first terminal connected to the first ring-shaped coil, and a receiving portion having a second ring-shaped coil, a second ring-shaped magnetic body covering the second ring-shaped coil and a second terminal connected to the second ring-shaped coil, and a bearing connecting a hollow fixed portion to a hollow rotating portion, which is capable of rotating with respect to the fixed portion, in which the first ring-shaped coil and the second ring-shaped coil are formed so as to be wound around a rotation axis of the bearing, the first ring-shaped magnetic body and the second ring-shaped magnetic body face each other with a gap formed in the direction of the rotation axis, and the communication unit is provided inside the fixed portion and the rotating portion.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: May 1, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Takeshi Nakajima
  • Publication number: 20120038308
    Abstract: An apparatus for transmission of electrical power includes an AC voltage source configured to produce AC voltage. A stator includes a primary winding arrangement electrically fed from the AC voltage source, the primary winding arrangement having at least two primary windings. A rotor includes a secondary winding arrangement inductively coupled to the primary winding arrangement of the stator, the rotor being rotatable in a rotation direction about a rotation axis. The rotation axis does not pass through the at least two primary windings, and the at least two primary windings each extend over a predetermined sector with respect to the rotation direction and are disposed offset with respect to one another with in the rotation direction.
    Type: Application
    Filed: September 12, 2011
    Publication date: February 16, 2012
    Applicant: ALSTOM TECHNOLOGY LTD
    Inventor: Hossein Safari Zadeh
  • Patent number: 8013706
    Abstract: System for contactless energy transmission includes a primary side winding and a secondary side winding that is rotatable relative to the primary side winding, a coil core being provided on the primary side winding, whose sectional view in at least one sectional plane containing the axis of rotation is formed as a U shape or C shape around the winding region of the primary side winding.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: September 6, 2011
    Assignee: Sew—Eurodrive GmbH & Co. KG
    Inventors: Olaf Simon, Jochen Mahlein, Klaus Schwesinger, Leobald Podbielski, Jochen Weber, Bernhard Schneider
  • Publication number: 20110050377
    Abstract: A system for high power transmission on an installation comprising a first part (1, 11) and a second part (2, 12) rotating relative to each other characterized in that the system further comprising a rotary three-phase transformer having primary (U1, V1, W1) and secondary (U2, V2, W2) windings, the first part being provided with one of said primary (U1, V1, W1) or secondary (U2, V2, W2) windings, the second part being provided with the remaining winding of said primary (U1, V1, W1) or secondary (U2, V2, W2) windings, said primary (U1, V1, W1) and secondary (U2, V2, W2) windings are arranged to face each other, and an air gap (6) is provided between the primary (U1, V1, W1) and secondary (U2, V2, W2) windings and their corresponding parts of the transformer cores.
    Type: Application
    Filed: April 14, 2009
    Publication date: March 3, 2011
    Inventors: Ole Johan Bjerknes, Svein Olaf Klemetsen, Jon Liverud
  • Publication number: 20110038190
    Abstract: An inductive coupled power transmission circuit has a rotating transformer, including an AC voltage supply for feeding an AC voltage via a series capacitor into the primary winding of said rotating transformer and a load being coupled to the secondary winding of said rotating transformer. The AC voltage supply includes a line rectifier for receiving AC voltage from a power line and generating a DC voltage. This is fed into a DC/DC converter for converting the DC voltage from the line rectifier into a controlled intermediate DC voltage. An AC generator generates an AC voltage from the intermediate DC voltage and feeds this via a matching transformer into the primary winding of the rotating transformer. A measuring circuit measures voltages and/or currents within the AC voltage supply and a function generator estimates voltage and/or current values at the load based on the measured values and controls the DC/DC converter and/or the AC generator based on the estimated values.
    Type: Application
    Filed: August 17, 2009
    Publication date: February 17, 2011
    Inventor: Arno Zimpfer
  • Publication number: 20110018667
    Abstract: The invention relates to a transponder system for the contactless inductive power transmission of a stationary part having at least one read coil (2) disposed on the stator (1) to a rotating part having at least one transponder coil (4) disposed on a spindle (3). The aim of the invention is to provide a transponder system of the aforementioned kind which can be used for self-sufficient sensor applications even in the vicinity of metal materials and noise fields caused by electric motors conventional in mechanical engineering. For this purpose, the surrounding (5) of the read coil (2), especially the stator is produced from a material having little magnetic permeability and good electrical conductivity, preferably aluminum. The transponder coil (4) and/or the read coil (2) are disposed as flat coil (6) on the inside and/or outside of a cylindrical periphery (9, 10) of the stator and/or rotor (11).
    Type: Application
    Filed: October 18, 2005
    Publication date: January 27, 2011
    Inventors: Thomas Jaeger, Peter Wiese
  • Patent number: 7816828
    Abstract: A magnet wheel and a stator winding which are necessary for an excitation device are included in a synchronous machine. Energy is transferred to the magnet wheel through inductivity, preferably, energy to a super-conductive coil, by the excitation device. Protection against the magnetic field produced by the current in the winding head is provided in the form of a specific system which is used to reduce the corruptions of the interfering fields of stator and rotor winding.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: October 19, 2010
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ralf Cordes, Jan Weigel, Markus Wilke
  • Patent number: 7750507
    Abstract: An electronics support apparatus for rotating electronics is provided that eliminates the need for electrical contact brushes and/or reduces the number of inductive power coupling coil pairs required to provide power to the rotating electronics. With the apparatus, a single inductive power coupling coil pair is utilized in which the coils are oriented at approximately 90 degrees, i.e. at a right angle, to each other, e.g., the “outer” coil (secondary transformer coil) is oriented approximately 90 degrees to the “inner” coil (primary transformer coil). A transformer core, or “elbow core,” having an approximately 90 degree bend is provided for coupling the magnetic energy of the primary transformer coil with the secondary transformer coil, thus imparting or coupling energy simultaneously through 2 axes of motion.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: July 6, 2010
    Assignee: International Business Machines Corporation
    Inventor: Randall R. Heisch
  • Publication number: 20100148505
    Abstract: A transformer is provided comprising a first member upon which a first circuit is wound; a second member upon which a second circuit is wound such that power is transferred to the second circuit in a contact-less manner; and a signal transmitter on the first member in close proximity to an appropriate receiver on the second member together with a signal transmitter on the second member in close proximity to an appropriate receiver on the first member such that said transmitters and receivers exchange signals in a contact-less manner, whereby the circuits are embedded in a high thermal conductivity resin. An exemplary embodiment of the invented transformer is one where the second member rotates relative to the first member.
    Type: Application
    Filed: December 16, 2008
    Publication date: June 17, 2010
    Inventors: Gregory M. Dunlap, Kai Chi Chan, Jason S. Katcha, Thomas A. Spengler, Jeremy A. Miller
  • Publication number: 20090295523
    Abstract: The transformer ensures the transmission of electrical power by electromagnetic induction between the first (11) and second (12) coils concentrically arranged on the first (7) and second (8) tubular parts respectively, which are made of a ferromagnetic material, and coaxially mounted in such a way that an outer surface (13a, 13b, 13c) of one part can rotate in relation to an inner surface (14a, 14b, 14c) of the other. These surfaces each consist of two straight cylindrical rotation surfaces (13a, 13c; 14a, 14c) of different diameters, each extending from one of the axial ends of the part (7; 8) to an intermediate radial shoulder (13b, 14b) for connecting these surfaces. The parts (7; 8) are arranged head-to-foot one inside the other so as to delimit, between the shoulders (13b; 14b), an annular space receiving the coils (11, 12), between two annular gaps each delimited by two (13a, 14a; 13b, 14b) of the facing cylindrical surfaces of the first (7) and second (8) parts.
    Type: Application
    Filed: October 24, 2006
    Publication date: December 3, 2009
    Inventors: Denis Schwander, Michel Privat, Francois Dugue, Daniel Sadarnac
  • Publication number: 20080211614
    Abstract: There is described a device for the contactless transfer of energy and data. Said device comprises a primary coil assembly, which is located in a fixed manner on a first support and a secondary coil assembly, which is located in a fixed manner on a second support, the first and second supports being rotatable in relation to one another and the primary and secondary coil assemblies having a respective energy coil for the inductive transfer of electric energy. To achieve a least possible interference of the data transfer caused by the energy transfer, the primary and secondary coil assemblies comprise at least one respective data coil for an inductive data transfer and at least one data winging of said data coil surrounds at least one energy winding of the energy coil in such a way that a first section of the data winding is wound in the wound direction of the energy coil and a second section of the data winding is wound in the opposite direction to the wound direction of said energy coil.
    Type: Application
    Filed: March 23, 2006
    Publication date: September 4, 2008
    Inventors: Rudolf Mecke, Christian Rathge
  • Publication number: 20080204182
    Abstract: System for contactless energy transmission includes a primary side winding and a secondary side winding that is rotatable relative to the primary side winding, a coil core being provided on the primary side winding, whose sectional view in at least one sectional plane containing the axis of rotation is formed as a U shape or C shape around the winding region of the primary side winding.
    Type: Application
    Filed: May 30, 2006
    Publication date: August 28, 2008
    Inventors: Olaf Simon, Jochen Mahlein, Klaus Schwesinger, Leobald Podbielski, Jochen Weber, Bernhard Schneider
  • Patent number: 7355307
    Abstract: A device for supplying electric energy to at least one superconductor, with the superconductor being cooled in a cooled region to at least one predetermined temperature for achieving superconductivity, includes at least one electric energy source, and a transformer for transferring electric energy between the at least one energy source and the superconductor. The transformer has a primary winding electrically connected with the energy source and a secondary winding electrically connected with the superconductor, wherein at least the secondary winding of the transformer is arranged within the cooled region.
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: April 8, 2008
    Assignee: Siemens Aktiengesellschaft
    Inventor: Florian Steinmeyer
  • Patent number: 7199691
    Abstract: A flat resolver, which has a magnetic path forming a magnetic flux effectively linking to a secondary winding and a detection winding and has a uniform gap between a stator portion and a movable portion so that a resolver signal can be output with high precision, is provided. The flat resolver includes: plate portions of a stator core and a movable core, which are made of a magnetic material and are disposed in parallel with each other; a plurality of magnetic pole portions protruding from opposed surfaces of the plate portions; coil arranged-wiring substrates disposed around each of the magnetic pole portions; transformer winding cores disposed on the plate portions; and transformer winding arranged-wiring substrates disposed on the transformer winding cores.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: April 3, 2007
    Assignee: Minebea Co., Ltd.
    Inventor: Taiichi Miya
  • Patent number: 7167068
    Abstract: A transformer has a bar-shaped ferrite core, an inner winding wound directly around the ferrite core, an outer winding wound over the inner winding, and a dielectric shield surrounding the outer winding. The outer winding has its circumference covered by a dielectric sheath, and has an intermediate winding portion between its winding start end and its winding stop end. The dielectric sheath in the intermediate winding portion is spaced from each other along the axis of the ferrite core to leave thereat a gap which is filled with a molding material. By provision of the gap between the dielectric sheath of the outer winding, the molding material forming the dielectric shield can be easy to flow in between the dielectric sheath of the outer winding and the inner winding, avoiding the void from appearing between the inner and outer windings for attaining stable electrical characteristic.
    Type: Grant
    Filed: August 13, 2003
    Date of Patent: January 23, 2007
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Tomoyuki Nakano, Kazuhiko Kinutani, Hiroshi Ogasawara, Mizuto Ida, Yoshiharu Nakamura
  • Patent number: 6950633
    Abstract: A rotary non-contact connector and a non-rotary non-contact connector enable data transmission in a non-contact mode by radio transmitters-receivers by combining rotary transformers or stationary transformers and radio transmitters-receivers, and providing power systems with buffer functions by a storage means to receive supplied electric power. Each of the rotary non-contact connector and the non-rotary non-contact connector has first and second radio transmitters-receivers provided between a rotor and an annular stator of a rotary transformer and between first and second stationary members of a stationary transformer to permit two-way radio data communication in a non-contact mode. Furthermore, storage means are provided to implement a buffering function for a power system.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: September 27, 2005
    Assignees: Tamagawa Seiki Kabushiki Kaisha, Chubu Nihon Maruki Co., Ltd.
    Inventors: Tetsuya Kojima, Akifumi Arai, Hiroyuki Koitabashi
  • Patent number: 6876120
    Abstract: An inner core 62 and a resolver rotor 63 are secured to a rotary shaft 68 so that they are coaxial. A spacer 2, is provided between the inner core 62 and the resolver rotor 63. The spacer 2 and the inner core 62 are formed as a unit with separation, or space, between the spacer 2 and flange 41 of the inner core 62. The thickness of flange 41 is greater than the corresponding width of the corresponding part of the outer core, on which a rotary transformer input winding is wound. The resolver rotor 63 is a separate unit from the spacer 2 and the inner core 62, which facilitates automatic winding of the rotor. Grooves 3, 42 are formed in the spacer 2 and the flange 41 to accommodate a crossover wire 60.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: April 5, 2005
    Assignee: Minebea Co., Ltd.
    Inventors: Taiichi Miya, Mutsumi Matsuura
  • Patent number: 6837644
    Abstract: A dual shaft and rotating machine coupling has a first rotatable shaft, a second rotatable shaft and a rotating machine rotor coupling. The first rotatable shaft has a first shaft connecting flange radially extending outwardly therefrom. The second rotatable shaft is axially aligned with the first rotatable shaft and has a second shaft connecting flange radially extending outwardly therefrom. The second shaft connecting flange is spaced from the first shaft connecting flange. The rotating machine rotor coupling has a rotor spider and a rotor connecting flange radially extending inwardly from the spider securely sandwiched between and in abutting relation with the first and second shaft connecting flanges.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: January 4, 2005
    Assignee: General Electric Canada Inc.
    Inventors: Michael Walter White, Peter Truman
  • Patent number: 6734593
    Abstract: An alternating current generator, comprising: a disc shaped rotor and first and second ring shaped stationary cores, coaxially located with the rotor, the rotor further comprising a non-magnetic disc attached to a shaft, with a plurality of low permeability magnetic blocks fastened to the rim of the disc; the first stationary core being an electromagnet shaped so as to present magnetic poles to the rotor blocks; and, the second stationary core being an armature, further comprising: a low permeability magnetic core wound with a conductive coil, shaped so as to present poles which can be magnetically polarized to the rotor blocks.
    Type: Grant
    Filed: February 9, 2001
    Date of Patent: May 11, 2004
    Inventor: Roland C. Lawes
  • Publication number: 20040012471
    Abstract: A rotary contactless connector and a non-rotary contactless connector enable data transmission in a contactless mode by optical elements by combining a rotary transformer or a stationary transformer and a means for coupling the optical elements, and providing a power system with or without a buffer feature by a storage means to receive supplied electric power. The rotary contactless connector has a rotary transformer (1), a light emitting element (8) or a light receiving element provided in the rotor (3), and a stationary light emitting element or light receiving element (11). Data is transmitted between the light emitting element (8) and the light receiving element (11) while supplying electric power to the rotor (3) through the intermediary of the rotary transformer (1).
    Type: Application
    Filed: August 24, 2001
    Publication date: January 22, 2004
    Applicants: TAMAGAWA SEIKI KABUSHIKI KAISHA, CHUBU NIHON MARUKO CO., LTD.
    Inventors: Tetsuya Kojima, Akifumi Arai, Hiroyuki Koitabashi
  • Patent number: 6512437
    Abstract: An isolation transformer is provided having primary and secondary cores (2, 4) and primary and secondary coils (3, 5) with the primary coil and the secondary coil being disposed with a gap G provided therebetween. Each of the primary coil and the secondary coil is formed of a wire having at least two substantially parallel long sides, and a length of the two long sides in each of the wires is set to be longer than a distance between the two long sides in each of the wires. Each of the wires is wound to have a plurality of turns in a manner such that an outer one of the two long sides of each inner one of the turns is adjacent to an inner one of the two long sides of each respective adjacent outer one of the turns.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: January 28, 2003
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Dongzhi Jin, Fumihiko Abe, Hajime Mochizuki