Slip Rings Patents (Class 310/232)
  • Patent number: 10424889
    Abstract: A wire brush for a slipring includes a contact section, from which a stabilizer arm is extending backwards towards the brush block of the slipring. The stabilizer arm holds a friction section, which is in friction contact with the contact section at a friction contact area. Such contact, in operation, generates internal friction within the brush when the brush is moved and, therefore, suppresses oscillations of the brush.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: September 24, 2019
    Assignee: SCHLEIFRING GMBH
    Inventor: Robert Geyer
  • Patent number: 10407948
    Abstract: The invention relates to a detection device for detecting mechanical functional states of a motor vehicle lock, in which at least two binary signal outputs are provided which define a logical state of the detection device through the respective electrical potentials present there. It is proposed that the functional state of the motor vehicle lock is determined on the basis of the logical state of the signal outputs and of the electrical resistance between the predetermined signal outputs.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: September 10, 2019
    Assignee: Brose Fahrzeugtelle GmbH & Co. KG, Hallstadt
    Inventors: Paul Lapok, Joerg Reinert, Abdelali El-Hamoumi
  • Patent number: 10363671
    Abstract: A horizontal multi-joint robot includes: a first joint capable of swiveling around a first axis; a second joint capable of swiveling around a second axis that is parallel to and spaced apart from the first axis; and a duct connected between the first joint and the second joint. The first joint has a first connecting portion forming a predetermined angle relative to the first axis. The second joint has a second connecting portion forming a predetermined angle relative to the second axis. The duct has a first end and a second end. The first end is connected to the first connecting portion. The second end is connected to the second connecting portion.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: July 30, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Masatoshi Ono
  • Patent number: 10320267
    Abstract: A rotary electric machine includes a rotating shaft 18 rotatably supported by a housing, a stator including armature windings, a rotor including field cores and field windings, slip rings electrically connected to the field windings, brushes contacted and electrically connected to the slip rings, and a brush holder including the brushes and terminals. The rotor is provided with one or more fans. The terminals include exposed portions exposed at least partially from the brush holder, and the exposed portion are disposed on a ventilation path of a cooling airflow W generated by rotation of the fans. Accordingly, since the exposed portion are disposed on the ventilation path of the cooling airflow, heat caused by an energization can be efficiently dissipated, and heat generated in the brushes due to the interfacial friction is dissipated from the exposed portions.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: June 11, 2019
    Assignee: DENSO CORPORATION
    Inventor: Hiroyuki Tsuchiya
  • Patent number: 10252402
    Abstract: Provided are: an impact fastening tool which prevents a torque detector from missing a signal and extends service life by adopting a fixed connector that prevents the trouble of being instantaneously separated (bounced) from a rotating electrode by intermittent impacts and has a shape allowing the progression of friction to be delayed structurally; and a torque tester. Both end portions of the fixed connector are fixed, and at least two protrusion portions are formed between the both end portions. The rotating electrode is disposed between one protrusion portion and the other protrusion portion such that the rotating electrode contacts the fixed connector at two or more points or in a line form. A signal required for the torque detecting means is transmitted through the contact between the rotating electrode and the fixed connector.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: April 9, 2019
    Assignee: YOKOTA INDUSTRIAL CO., LTD.
    Inventors: Kentarou Fujisawa, Hiroaki Inamori
  • Patent number: 10256704
    Abstract: A slip ring device includes an insulating molded body in which a pair of slip rings and a pair of connecting conductors are provided. The insulating molded body includes a molded body main body portion disposed in a position further from a rotor main body than a bearing provided on a shaft, the slip rings being provided in the molded body main body portion, an opposing portion disposed between the bearing and the rotor main body, and a pair of beam portions that connect the molded body main body portion to the opposing portion, the connecting conductors being provided respectively in the beam portions. A pair of shaft grooves respectively accommodating the pair of beam portions are provided in the shaft. A spreading suppression portion for preventing resin with which a field coil is impregnated from spreading into the shaft grooves is provided in the opposing portion.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: April 9, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shinichiro Minami, Kazunori Tanaka
  • Patent number: 10230279
    Abstract: In a rotary electric machine, a first pole core body and a second pole core body are produced using solid cores, and first slits are formed on outer circumferential surfaces of a first boss portion and a second boss portion at a uniform pitch in a circumferential direction so as to have groove directions oriented in an axial direction to disrupt pathways of eddy currents that flow on the outer circumferential surfaces of the first boss portion and the second boss portion.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: March 12, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Toshiyuki Yoshizawa, Moriyuki Hazeyama
  • Patent number: 10109970
    Abstract: The disclosed invention is a slip ring assembly that provides electrical power transfer to centrifugal turbomachinery while minimizing or eliminating the presence of wires in the flow path. The device transfers electrical power through a set of wires connected to a plurality of brushes that are held rotationally stationary, but allowed to displace axially or radially through a set of springs. The brushes make contact with conductive busbar rings, transferring electricity to the busbar rings. The busbar rings rotate with the centrifugal turbomachine with a set of wires that connect the busbar rings to the blades or other aerodynamic surfaces of the centrifugal turbomachine.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: October 23, 2018
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Michael E. Slipper, Tristan M. Wolfe, Daniel J. Simmons
  • Patent number: 10033145
    Abstract: The disclosed invention is a slip ring assembly that provides electrical power transfer to centrifugal turbomachinery while minimizing or eliminating the presence of wires in the flow path. The device transfers electrical power through a set of wires connected to a plurality of brushes that are held rotationally stationary, but allowed to displace axially or radially through a set of springs. The brushes make contact with conductive busbar rings, transferring electricity to the busbar rings. The busbar rings rotate with the centrifugal turbomachine with a set of wires that connect the busbar rings to the blades or other aerodynamic surfaces of the centrifugal turbomachine.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: July 24, 2018
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Michael E. Slipper, Tristan M. Wolfe, Daniel J. Simmons
  • Patent number: 10014755
    Abstract: A method of securing a fan member to a rotor assembly of an electric machine. The method includes positioning the fan member adjacent the rotor, aligning at least two mounting members extending radially outwardly of the central hub of the rotor assembly with a corresponding at least two mounting elements extending radially inwardly of a hub portion of the fan member, and securing the at least two mounting members to the corresponding at least two mounting elements.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: July 3, 2018
    Assignee: BORGWARNER INC.
    Inventors: Kirk Neet, David Maley, Scott Bitzer, Chad Zook
  • Patent number: 9960560
    Abstract: An electric motor with contact commutation may include an external stator and an internal, rotatably mounted rotor. A magnet arrangement including at least one permanent magnet may be arranged fixedly on the rotor. A coil arrangement including at least one electric coil may be arranged fixedly on the stator. A contact commutation assembly may be in communication with the coil arrangement.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: May 1, 2018
    Assignee: Mahle International GmbH
    Inventors: Marcel Froebel, Martin Helmis, Bernd Mack, Peter Wieske
  • Patent number: 9812749
    Abstract: A radio frequency rotary coupler with its power dividers/couplers separated among multiple circuit layers that are axially stacked and interconnected using coaxial feeds. This architecture allows for multiple layers of circuits with minimal outside diameter and while minimizing increase in axial length. The coupler includes a stator, rotor, and dynamic capacitive ring. The stator includes at least a first stator circuit layer with a primary stator power divider (SPD), a second stator circuit layer with at least one secondary SPD, and stator coaxial feeds coupling the primary SPD and the secondary SPD(s). The rotor includes a first rotor circuit layer with a primary rotor power divider (RPD), a second rotor circuit layer with at least one secondary RPD, and rotor coaxial feeds coupling the primary RPD and the secondary RPD(s). The dynamic capacitive ring couples the stator and the rotor via the secondary SPD(s) and RPD(s).
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: November 7, 2017
    Assignee: Continental Microwabe and Tool Co., Inc.
    Inventor: Glenn David Faulkner
  • Patent number: 9793669
    Abstract: The disclosed invention is a slip ring assembly that provides electrical power transfer to centrifugal turbomachinery while minimizing or eliminating the presence of wires in the flow path. The device transfers electrical power through a set of wires connected to a plurality of brushes that are held rotationally stationary, but allowed to displace axially or radially through a set of springs. The brushes make contact with conductive busbar rings, transferring electricity to the busbar rings. The busbar rings rotate with the centrifugal turbomachine with a set of wires that connect the busbar rings to the blades or other aerodynamic surfaces of the centrifugal turbomachine.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: October 17, 2017
    Assignee: The United States of America Department of the Navy
    Inventors: Michael E. Slipper, Tristan M. Wolfe, Daniel J. Simmons
  • Patent number: 9780513
    Abstract: The lifetime of sliding contact surface(s) of a precious metal or a precious metal alloy can be enhanced by embedding at least one nano-particle in the layer forming the sliding contact surface(s).
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: October 3, 2017
    Assignee: SCHLEIFRING UND APPARATEBAU GMBH
    Inventors: Christian Holzapfel, Norica Godja
  • Patent number: 9767692
    Abstract: An apparatus is adapted to be in electro-mechanically communication with a vehicle and configured to record information related to crash investigation and early warning. The device records and stores information as well as analyzes it to provide an occupant of the vehicle early warning as to potential hazards that arise.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: September 19, 2017
    Inventor: Louvena Vaudreuil
  • Patent number: 9705272
    Abstract: A restricting member is provided that is in contact with respective bent lead portions of a long-sized lead and a short-sized lead and imparts a tension to linear lead portions thereof in a mold for insert molding. The restricting member reliably prevents the leads from displacement and deformation resulting from the pressure of the resin at the time of insert molding, and allows the long-sized lead and the short-sized lead to be disposed at proper positions in a molded body.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: July 11, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masayuki Sakaguchi, Shintaro Shimizu
  • Patent number: 9640928
    Abstract: A slip ring arrangement comprises a brush with a first contact material on the surface, which rests on a slideway with a second contact material on the surface. The slideway further comprises a layer with a third contact material beneath the second contact material. In this case, the abrasion of the brush is lower than that of the second contact material in the case of a sliding contact between the brush and the second contact material. In the case of a sliding contact between the brush and third contact material, the abrasion of the brush is higher than that of third contact material. As a result, the second contact material of the slideway is degraded first, which corresponds to the normal service life of a slideway. Subsequently, the brush is worn off relative to the third contact material, by means of which a further considerable extension in the service life is achieved.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: May 2, 2017
    Assignee: SCHLEIFRING UND APPARATEBAU GMBH
    Inventor: Christian Holzapfel
  • Patent number: 9608395
    Abstract: A medical apparatus (600) including: a magnetic resonance imaging system (602), a medical device (634), and a slip ring assembly (400, 500) for supplying electrical power to the medical device. The slip ring assembly includes: a cylindrical body (100), a rotating member (402) for rotating the medical device, a first cylindrical conductor attached to the cylindrical body, a second cylindrical conductor (108), a first set of conductive elements (112, 712) connected to the second cylindrical conductor; and a brush assembly (406) comprising a first brush (302) and a second brush (304). The first brush is operable to contact the first cylindrical conductor. The second brush is operable to contact the set of conductive elements. The first and second cylindrical conductive elements overlap at least partially. The second cylindrical conductor is connected to the cylindrical body. The first cylindrical conductor and the second cylindrical conductors are electrically isolated.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: March 28, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventor: Johannes Adrianus Overweg
  • Patent number: 9577495
    Abstract: A rotary electric machine including a brush used to supply a field current to a field winding of a rotor, a brush holder holding the brush, a power circuit portion connected to a heat sink having fins, and a case covering the power circuit portion and the brush holder. An air passage is provided between the brush holder and the fins of the heat sink, and an opening is provided to the case so as to cover component members of the brush holder in a shape conforming to an outer peripheral portion of the brush holder, from which cooling air is allowed to pass through the air passage.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: February 21, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuya Fukase, Masahiko Fujita, Dai Nakajima, Hitoshi Isoda, Naohide Maeda
  • Patent number: 9484697
    Abstract: A brush holder assembly for an alternator having a rotational axis includes a pair of brushes each having a contacting surface defining a width and a height, and each having a shunt wire extending laterally from the brush in the widthwise direction. The brush holder assembly includes a housing having first and second brush chambers, corresponding first and second wire cavities each defining a cavity height, and first and second slots respectively interposed between the corresponding chamber and cavity. The respective shunt wires extend through the first and second slots then through the first and second wire cavities. The cavity heights are each at least approximately 0.9 times the height of one of the brushes. The height of the first wire cavity is less than approximately 0.97 times ((A/2) plus B), wherein A is the brush height and B is the distance between the brushes.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: November 1, 2016
    Assignee: Remy Technologies, LLC
    Inventors: Kirk Neet, Scott Bitzer
  • Patent number: 9484787
    Abstract: A voltage regulator device provided in a bearing of a rotary electric machine of a motor vehicle. The regulator device comprises a support and at least one electronic component configured to participate in the control of the electric machine. The support comprises a first part on which the at least one electronic component is mounted. The first part having an edge equipped with a brush holder provided with at least one brush-holder receptacle configured to accommodate a brush for making an electrical connection with a rotor of the electric machine. The device is configured to allow air to flow through the first part of the support, in contact with the brush holder. The device includes at least one air circulation slot provided through the support between the first part and the brush-holder. The support covers an air opening in the bearing.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: November 1, 2016
    Assignee: Valeo Equipments Electriques Moteur
    Inventors: Christophe Dugue, Brice Lecole, Benoit Walme
  • Patent number: 9391417
    Abstract: A slip ring apparatus including a ring assembly having a conductive ring with a conductive ring engagement surface, a contact assembly having a contact element with a contact element engagement surface for engaging with the conductive ring engagement surface, and a surface discontinuity provided in at least one of the conductive ring engagement surface and the contact element engagement surface. An apparatus including the slip ring apparatus, wherein the apparatus includes a housing having an interior and a shaft rotatably extending through the interior of the housing. A method for reducing the potential of a hydroplaning effect in a slip ring apparatus, including providing a surface discontinuity in at least one of a conductive ring engagement surface and a contact element engagement surface.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: July 12, 2016
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Jonathan Peter Zacharko
  • Patent number: 9315260
    Abstract: An electrical swivel system may have a movable swivel member adapted to connect to a landing gear and a fixed swivel member adapted to connect to an airframe. Each may have an interface apparatus whereby electrical signals may be conducted between components of the movable swivel member and the fixed swivel member. In this manner, electrical signals may be conveyed across a mechanically movable joint.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: April 19, 2016
    Assignee: GOODRICH CORPORATION
    Inventor: Derek C Milsom
  • Patent number: 9240660
    Abstract: A slip ring assembly includes a pair of conductive rings consecutively positioned along a center shaft of the slip ring assembly. The pair of conductive rings are electronically coupled to a high frequency signal source via a first twisted wire pair. The pair of conductive rings are electronically coupled to a data processor via a second twisted wire pair. The first and second twisted wire pairs have constant target impedances that are substantially similar. The first and second conductive rings are axially spaced at an axial distance that is sized so as to maintain the constant target impedance across the first and second conductive rings during transmission of a high frequency signal from the high frequency signal source to the data processor. The slip ring assembly provides a method for impedance matching across the conductive rings of the slip ring assembly.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: January 19, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Mario Joseph Arceneaux, Kurt Kramer Schleif, Donald W. Shaw
  • Patent number: 9157419
    Abstract: A lightning protection system is provided for a wind turbine. The wind turbine has an electrically grounded structure part, a main shaft electrically and mechanically connected to the grounded structure part, a blade hub rotationally connected via a main bearing to the main shaft and blades connected to the blade hub. The lightning protection system includes a down-conductor attachable inside one of the blades and a high voltage conductor for guiding lightning current, wherein a first end of the high voltage conductor is in electrical communication with the down-conductor. The lightning protection system also includes a high voltage contact attachable inside the main shaft, wherein a second end of the high voltage conductor is in electrical communication with the high voltage contact. Lightning current is guided from the down-conductor via the high voltage conductor to the high voltage contact.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: October 13, 2015
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Bastian Lewke
  • Patent number: 9039423
    Abstract: A rotary device for providing continuous electrical connections between dynamic, rotationally engaged connector components. The rotary device includes a rotor assembly comprising a plurality of slip ring elements electrically connected to a connector or cable at the rotor end of the device. The rotary device also includes a stator assembly configured to receive the rotor assembly, with slide contacts electrically connected to a connector or cable at the stator end of the device. The rotor assembly is rotationally coupled to the stator assembly, and the slip rings and slide contacts maintain electrical contact during rotation of the rotor assembly relative to the stator assembly. A first electronic device and a second electronic device connected using the rotary device can be freely rotated without twisting of the cable between the two devices. A method for assembling a rotary device configured based on the devices to be connected.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: May 26, 2015
    Assignee: Hypertronics Corporation
    Inventor: Arkady Shinder-Lerner
  • Patent number: 9024503
    Abstract: Electrical machine, in particular AC generator, having a stator (16) and a rotor (20), wherein the rotor (20) has a conductor arrangement for exciting an electromagnetic field, having a device for transmitting electrical energy to the conductor arrangement, wherein the device for transmitting electrical energy comprises at least one sliding contact and at least one mating contact (66) which is fixed to the rotor, having a fitting sleeve (63) in which a roller bearing (28) for supporting a shaft (27) is preferably arranged, said shaft for the most part encasing the at least one mating contact (66) which is fixed to the rotor, wherein a fan (70) is arranged in the fitting sleeve (63).
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: May 5, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Dieter Schurig, Erdogan Dikmenli
  • Patent number: 8986017
    Abstract: What is presented is a method of manufacturing a rotatable electric coupling. The rotatable electric coupling comprises a male connector half and a female connector half. The male connector half comprises one or more male coupling parts, one or more male insulator elements, and a male connector core that has a central burrow. The female connector half comprises a female core base having a channel, one or more female coupling parts that have a channel extender, one or more female core spacers that also have a channel extender, and a female end cap. The method comprises assembling the male connector half, assembling the female connector half, and inserting the male connector half into the female connector half.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: March 24, 2015
    Assignee: OASYS Healthcare Corporation
    Inventor: Vincent A. Borg
  • Publication number: 20140375062
    Abstract: The invention concerns a method of reconditioning a slip ring transmitter of the gold wire type which has a slip ring, in particular a gold ring, for use with a gold wire board as the circuit board, including the steps: removing a gold wire board from the slip ring transmitter, and fitting a multi-brush board as a replacement for the gold wire board.
    Type: Application
    Filed: January 11, 2013
    Publication date: December 25, 2014
    Inventor: Alfred Beekmann
  • Publication number: 20140361658
    Abstract: In a rotor of the present invention, an interference is set to have a relationship so that an inner diameter of a press-fit projecting portion before press-fitting is smaller than a diameter of a shaft, and in the inner wall surface, a non-projecting portion is formed without projecting portions on a portion in which a weld line is generated by the molding.
    Type: Application
    Filed: March 8, 2012
    Publication date: December 11, 2014
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshiro Imazawa, Shinichiro Minami, Hitoshi Shibagaki, Kazunori Tanaka
  • Patent number: 8872406
    Abstract: A slip-ring arrangement of a rotating electrical machine includes a plurality of slip-rings disposed concentrically about an axis of the electrical machine one behind the other in an axial direction, the plurality of slip-rings configured to be self-supporting.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: October 28, 2014
    Assignee: Alstom Renewable Technologies
    Inventors: Alexander Schwery, Naoki Ricardo Okai, Stefan Baumeister
  • Publication number: 20140292136
    Abstract: The invention proceeds from a rotating electric machine, in particular a double-fed induction machine in the power range between 20 MVA and 500 MVA, which comprises a rotor that rotates about a machine axis, is concentrically surrounded by a stator, and has a rotor plate body and a shaft, which rotor plate body bears a rotor winding that is arranged further outwards and is connected by means of connectors to slip rings that are arranged further inwards at the end of the shaft. A flexible and secure connection is achieved in that the connectors have mechanical connectors that run at right angles to the shaft to absorb forces arising owing to centrifugal acceleration, which mechanical connectors are connected on one side to a rotor winding head of the rotor winding and are supported on the other side on an auxiliary rim on the rotor plate body.
    Type: Application
    Filed: June 17, 2014
    Publication date: October 2, 2014
    Inventors: Ricardo Naoki OKAI, Alexander SCHWERY, Hanspeter WALSER
  • Patent number: 8829761
    Abstract: A sliding contact assembly comprises: at least one contact slide track; a brush holder for holding at least one brush contact member and maintaining the at least one brush contact member in sliding contact with the at least one contact slide track during relative movement between the brush contact member and the contact slide track; and a collecting container disposed to collect particles of abraded material from the at least one brush contact member; wherein a cover is provided to surround substantially the brush holder and the at least one brush contact member, the cover having walls extending along a direction of the contact slide track laterally of the brush holder and the brush contact member and along a side of the brush holder remote from the contact slide track; the collecting container is disposed at a downstream end of the cover; and the cover is designed to channel a stream of air, generated within the cover by movement of the contact slide track, towards the collecting container.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: September 9, 2014
    Assignee: Schleifring und Apparatebau GmbH
    Inventor: Harry Schilling
  • Publication number: 20140239766
    Abstract: A system includes a generator. The generator is equipped with a plurality of field coils. A first collector ring is configured to be coupled to an excitation source. A first main lead is configured to direct a current through the plurality of field coils. The first main lead has first and second ends. The first end includes a first gooseneck axially coupled to the plurality of field coils. The second end is configured to axially couple to a first radial terminal of the generator.
    Type: Application
    Filed: February 28, 2013
    Publication date: August 28, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Paul August Quail, Blake Weldon Wilson, Cynthia V. Nous
  • Publication number: 20140184016
    Abstract: A dynamo-electric machine is provided comprising a stator and a rotor assembly which is rotatably mounted relative to the stator and which has a rotor shaft. The rotor assembly also has a rotor winding through which current flows and which is connected to terminals associated with the stator in an electrically conductive manner without interruption via a slip ring arrangement. The slip ring arrangement comprises at least two pairs of slip rings, each pair having a stator slip ring and a rotor slip ring that permanently rest against each other in a ring-shaped non-cylindrical contact zone. The two rotor slip rings are arranged between the two stator slip rings. Furthermore, each rotor slip ring is arranged on a rotor support disk that is rotationally fixed to the rotor shaft. The position of the two stator slip rings can be changed relative to each other in the axial direction.
    Type: Application
    Filed: December 23, 2013
    Publication date: July 3, 2014
    Applicant: KOLEKTOR GROUP D.O.O.
    Inventor: Franc BIZJAK
  • Publication number: 20140183998
    Abstract: The current diverter rings (CDRs), captured CDRs, bearing isolators, and explosion-proof CDRs serve to dissipate an electrical charge from a rotating piece of equipment to ground, such as from a motor shaft to a motor housing. One embodiment of the explosion-proof CDR includes a stator that may be mounted to the equipment housing and a rotor that may be mounted to a shaft. The rotor may rotate with the shaft may be encompassed by stator and a cap, which cap may be secured directly to the stator or the housing. A conductive assembly may be positioned in a radial channel formed in the stator such that the conductive assembly contacts the shaft to conduct electricity from the shaft to the housing. Another embodiment of an explosion-proof CDR does not require a rotor. The explosion-proof CDR may be configured to define a flame path to achieve various explosion-proof certifications.
    Type: Application
    Filed: June 18, 2013
    Publication date: July 3, 2014
    Inventors: Neil F. Hoehle, Dwight A. Vicars, Robert A. Tejano, David C. Orlowski
  • Patent number: 8674581
    Abstract: Systems, methods, and apparatus associated for lifting brushes and shorting slip rings are provided. One embodiment may include a shaft in operable communication with a WRIM rotor; multiple slip rings positioned radially around the shaft and in electrical communication with rotor windings of the WRIM; multiple brushes adapted for selective contact with a respective one of the plurality of slip rings. In addition, the system may include multiple selectively activating electrical contacts in electrical communication with respective terminals of the rotor windings of the WRIM; and an actuating mechanism in operable communication with the brushes and the electrical contacts. When the actuating mechanism is actuated, the electrical contacts create electrical shorts between the slip rings and the rotor windings of the WRIM and the plurality of brushes are lifted from contacting the plurality of slip rings.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: March 18, 2014
    Assignee: General Electric Company
    Inventors: Thiago Arouca Toledo, Nelson Kawasaki, Radhakrishna Darbha
  • Publication number: 20140043027
    Abstract: A medical apparatus (600) including: a magnetic resonance imaging system (602), a medical device (634), and a slip ring assembly (400, 500) for supplying electrical power to the medical device. The slip ring assembly includes: a cylindrical body (100), a rotating member (402) for rotating the medical device, a first cylindrical conductor attached to the cylindrical body, a second cylindrical conductor (108), a first set of conductive elements (112, 712) connected to the second cylindrical conductor; and a brush assembly (406) comprising a first brush (302) and a second brush (304). The first brush is operable to contact the first cylindrical conductor. The second brush is operable to contact the set of conductive elements. The first and second cylindrical conductive elements overlap at least partially. The second cylindrical conductor is connected to the cylindrical body. The first cylindrical conductor and the second cylindrical conductors are electrically isolated.
    Type: Application
    Filed: December 7, 2011
    Publication date: February 13, 2014
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventor: Johannes Adrianus Overweg
  • Patent number: 8558429
    Abstract: Systems, methods, and apparatus associated for lifting brushes and shorting slip rings are provided. One embodiment may include an actuating mechanism in operable communication with multiple brushes and a plurality of electrical contacts. Each of the brushes may be adapted for selective contact with a respective slip ring of an induction motor. The electrical contacts may be in electrical communication with respective terminals of rotor windings of the induction motor. When the actuating mechanism is actuated, at least a portion of the electrical contacts create electrical shorts between at least a portion of the slip rings and the rotor windings of the induction motor. When the actuating mechanism is actuated, at least a portion of the brushes are lifted from contacting the plurality of slip rings.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: October 15, 2013
    Assignee: General Electric Company
    Inventors: Thiago Arouca Toledo, Nelson Kawasaki, Radhakrishna Darbha
  • Patent number: 8531064
    Abstract: In one general aspect, various embodiments are directed to an ultrasonic surgical instrument that comprises a handpiece housing that rotatably supports an ultrasonic transducer assembly therein that may be selectively rotated by various motor configurations. Various slip ring arrangements are disclosed for supplying ultrasonic electrical signals and motor drive signals from a control system. Various forms of blade and cutting implements are disclosed for attachment to the ultrasonic transducer assembly such that such implements may be selectively rotatable within a hollow outer sheath. Vacuum may be applied to the cutting implement or through the outer sheath to draw tissue through an opening in the sheath and into contact with the cutting implement.
    Type: Grant
    Filed: February 11, 2010
    Date of Patent: September 10, 2013
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Galen C. Robertson, Richard W. Timm, Daniel J. Mumaw, Foster B. Stulen, Gregory W. Johnson, Jerome R. Morgan, Kevin L. Houser, Kristi M. Bodin, Mark A. Neurohr, Prasanna Malaviya, Reginald D. Fortson, Sean P. Conlon, William S. Joachim, Jr., William D. Dannaher, Eitan T. Wiener
  • Patent number: 8525383
    Abstract: A first slip ring and a second slip ring are put from both ends of a slip ring shaft, respectively, and are attached by shrink-fitting, the slip ring shaft being provided separately from a rotor shaft; the shaft diameter of a lead connecting portion is formed larger than the shaft diameters of respective slip ring attaching portions; and a coupling, which is attached by shrink-fitting to a shaft end portion on the rotor shaft side of the slip ring shaft after the first slip ring is attached by shrink-fitting, is provided.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: September 3, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshihide Kikuichi, Kiyonori Koga, Sachio Tomita
  • Publication number: 20130147311
    Abstract: A direct current motor has a wound stator, a permanent magnet rotor having a commutator assembly, and brush gear. The brush gear has a first pole brush, a second pole brush and a plurality of commutating brushes. The commutator assembly has a cylindrical insulating base, and first and second members fixed to the base. The first member includes a radially extending first slip ring and a number of axially extending first bars. The second member includes a radially extending second slip ring and a number of axially extending second bars. The first and second pole brushes make continuous sliding contact with the first and second slip rings respectively. The first and second bars are fixed to the outer cylindrical surface of the base and form a cylindrical surface against which the commutating brushes make sliding contact.
    Type: Application
    Filed: December 12, 2012
    Publication date: June 13, 2013
    Applicant: Johnson Electric S.A.
    Inventor: Johnson Electric S.A.
  • Publication number: 20130147310
    Abstract: A slip ring includes a first element and a second element movable relative to each other, a chamber between the first and second elements, a metal or alloy in the chamber. The metal or alloy is liquid or becomes liquid under operating conditions. A passage is connected to the chamber between the first and second element. An outer chamber is connected to the passages. The outer chamber is filled with a sealing fluid for the chamber.
    Type: Application
    Filed: December 7, 2012
    Publication date: June 13, 2013
    Applicant: ALSTOM TECHNOLOGY LTD
    Inventor: ALSTOM TECHNOLOGY LTD
  • Publication number: 20130140940
    Abstract: An electrical machine (1) with a machine housing (5) receiving an electrically excited rotor (2) and a stator (10) of the electrical machine (1) and with an electronics unit (18) fastened to the machine housing (5) and electrically connected to an exciter winding (3) of the rotor (2) via at least one sliding contact (11, 12) consisting of at least one slip ring (13, 14) assigned to the rotor (2) and at least one brush (15, 16) assigned to the electronics unit (18), the brush (15, 16) being arranged displaceably in a brush holder (20). In this case it is provided that the brush holder (20) is fastened exchangeably in a guiding recess (27) of the electronics unit (18).
    Type: Application
    Filed: December 6, 2012
    Publication date: June 6, 2013
    Applicant: Robert Bosch GmbH
    Inventor: Robert Bosch GmbH
  • Publication number: 20130099624
    Abstract: The current diverter rings and bearing isolators serve to dissipate an electrical charge from a rotating piece of equipment to ground, such as from a motor shaft to a motor housing. One embodiment of the current diverter is substantially arc shaped with a plurality of radial channels extending there through. A conductive assembly may be positioned in each radial channel such that a contact portion of the conductive assembly is positioned adjacent a shaft passing through the center of the current diverter ring. The arc-shaped body may be particularly useful during installation over certain existing shafts.
    Type: Application
    Filed: December 10, 2012
    Publication date: April 25, 2013
    Applicant: INPRO/SEAL LLC
    Inventor: Inpro/Seal LLC
  • Patent number: 8421286
    Abstract: A method may be used to retroactively install a grounding ring on an electrical motor used with an inverter to reduce the likelihood that shaft currents affect motor bearings. The method includes securing a ring of conductive material to an endplate of an electrical motor at a position that enables a shaft extending through the endplate to pass through the ring, the ring of conductive material includes conductive material that extends from the ring to contact the shaft when the ring is secured to the endplate, and covering the ring of conductive material with a bearing cap that has an opening that enables the shaft to pass through the bearing cap.
    Type: Grant
    Filed: February 3, 2009
    Date of Patent: April 16, 2013
    Assignee: Nidec Motor Corporation
    Inventors: Terry L. Bossaller, Donald W. Conley
  • Publication number: 20130002089
    Abstract: A commutator includes a substantially tubular insulating core, a first slip ring fixed to the core, a plurality of first bars electrically connected to the first slip ring, a second slip ring fixed to the core, and a plurality of second bars electrically connected to the second slip ring. The first bars and the second bars are fixed to the outer surface of the core and are alternately arranged at equally spaced intervals in the circumferential direction of the core. The first slip ring and the second slip ring are arranged on the same side of the first bars and the second bars. The first and second slip rings respectively comprise a contact surface that is substantially perpendicular to the axis of the commutator and is configured for contacting brushes.
    Type: Application
    Filed: July 2, 2012
    Publication date: January 3, 2013
    Inventors: Yue Li, Mao Xiong Jiang, Yong Wang, Hai Hui Xiang, Ya Ming Zhang, Jian Zhao
  • Patent number: 8344583
    Abstract: Provided is an automotive alternator having structure for preventing entry and discharging of foreign matters irrespective of a posture of a brush unit, to thereby allow normalization of the brush unit. The brush unit of the automotive alternator includes a slip ring, a brush, a brush holder, and a slip ring cover coaxially spaced from the slip ring and having an inner peripheral surface surrounding substantially an entire periphery of the slip ring. The inner peripheral surface of the slip ring cover has a tapered surface increasing in diameter from a first end on the frame side toward a second end having a fully-open opening. The fully-open opening is sealed by a sealing member that forms a labyrinth seal with the second end.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: January 1, 2013
    Assignee: Mitsubishi Electric Corp.
    Inventor: Tomonori Yamamoto
  • Publication number: 20120217840
    Abstract: A first slip ring and a second slip ring are put from both ends of a slip ring shaft, respectively, and are attached by shrink-fitting, the slip ring shaft being provided separately from a rotor shaft; the shaft diameter of a lead connecting portion is formed larger than the shaft diameters of respective slip ring attaching portions; and a coupling, which is attached by shrink-fitting to a shaft end portion on the rotor shaft side of the slip ring shaft after the first slip ring is attached by shrink-fitting, is provided.
    Type: Application
    Filed: February 17, 2011
    Publication date: August 30, 2012
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yoshihide Kikuichi, Kiyoniri Koga, Sachio Tomita
  • Publication number: 20120200194
    Abstract: A slip-ring arrangement of a rotating electrical machine includes a plurality of slip-rings disposed concentrically about an axis of the electrical machine one behind the other in an axial direction, the plurality of slip-rings configured to be self-supporting.
    Type: Application
    Filed: February 13, 2012
    Publication date: August 9, 2012
    Applicant: ALSTOM HYDRO FRANCE
    Inventors: Alexander Schwery, Naoki Ricardo Okai, Stefan Baumeister