Motor Or Part Encapsulated Patents (Class 264/272.2)
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Patent number: 11890408Abstract: A motorized medical suction pump has a pump assembly for generating an underpressure, a pump assembly carrier for supporting the pump assembly, and a seat for receiving an energy accumulator. The pump assembly arranged in the pump assembly carrier defines a first longitudinal axis, and the seat defines a second longitudinal axis. The pump assembly carrier forms the seat. The second longitudinal axis extends at an angle to the first longitudinal axis. This suction pump is small and compact and has good sound damping.Type: GrantFiled: November 9, 2018Date of Patent: February 6, 2024Assignee: MEDELA HOLDING AGInventors: Regina Marbet, Marcel Muther, Daniela Käppeli, Andreas Walter
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Patent number: 11835392Abstract: An apparatus includes a temperature sensor configured to measure a temperature of a dry-type transformer, and the temperature sensor is arranged on or proximate a conductor of the dry-type transformer and is covered by an insulating layer of the conductor. The apparatus further includes a passive wireless communication module configured to transmit the measured temperature to a reader. The temperature of the dry-type transformer can be measured accurately, thereby improving the reliability and safety of the dry-type transformer. Accordingly, temperature measurement for the dry-type transformer can work appropriately in a cost-effective and efficient way.Type: GrantFiled: January 19, 2018Date of Patent: December 5, 2023Assignee: HITACHI ENERGY LTDInventors: YiBo Zhang, Delun Meng, Jiansheng Chen, Chun Li
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Patent number: 11374451Abstract: A rotor assembly is provided for an electric motor. The rotor assembly includes: a cylindrical magnet member having magnetization in both axial and radial directions, the magnet member being formed from a moldable magnetic material; and an output shaft receivable within the magnet member. An inner surface of the magnet member and an outer surface of the output shaft have complementarily-engagable interface elements thereon to prevent or limit dislocation of the magnet member and output shaft, and at least one of the interface elements is formed by overmolding of the magnet member and output shaft with the other of magnet member and output shaft.Type: GrantFiled: July 5, 2019Date of Patent: June 28, 2022Assignee: JOHNSON ELECTRIC INTERNATIONAL AGInventors: Yvan Bourqui, Daniel Soncini, Bruno Neuhaus
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Patent number: 10998784Abstract: A motor suited for use in a direct drive laundry machine. The described motor has a stator core including an annular ring with an inner diameter between 120 mm and 250 mm, a radial width between 5 mm and 15 mm, and 24 or 27 stator poles projecting outward from the annular ring a distance of between 15 mm and 40 mm. Each stator pole is associated with one of three phase windings. A rotor for the motor has inwardly facing permanent magnet poles whereby the ratio of rotor poles to stator poles is 4:3.Type: GrantFiled: January 18, 2018Date of Patent: May 4, 2021Assignee: Fisher & Paykel Appliances LimitedInventors: Gerald David Duncan, Kerrin Edmund Burnnand, Gregory Paul Hill
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Patent number: 10879748Abstract: A stator of a rotary electric machine comprises: a stator core including multiple slots; multiple coils formed using a winding wound in a distributed fashion so as to pass through the slots; and multiple power lines connected to the coils. The coils have a coil end projecting from an end surface of the stator core. The coils are adjacent to each other in the peripheral direction. A connection between each of the coils and a corresponding one of the power lines is arranged adjacent to a base portion of the coil end on the outer periphery. Each of the power lines starts from the connection to extend along the outer periphery of the coil end to be adjacent to the base portion of the coil end on the outer periphery while extending outwardly in the axis direction from between the coils adjacent to each other in the peripheral direction.Type: GrantFiled: September 20, 2018Date of Patent: December 29, 2020Assignee: FANUC CORPORATIONInventors: Daisuke Hayahi, Naoya Hidaka
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Patent number: 10855151Abstract: A method of balancing a rotor and/or fixing rotor components includes arranging a plurality of generally like laminations side by side in a stack to form at least a part of a rotor. The rotor has a rotational center axis and each of the laminations having a plurality of apertures that cooperate to form passages that extend axially along a length of the stack. In accordance with an aspect of the method, a polymer based fixation material is filled in the passages in a manner to fix the laminations together in the stack. With the fixation material, a sprue is formed, projecting from an axial face of the stack. In accordance with another aspect of the method, a weight of the sprue is adjusted to rotationally balance the rotor about the rotor center axis.Type: GrantFiled: December 20, 2017Date of Patent: December 1, 2020Assignee: ABB Schweiz AGInventors: Elio Alberto Perigo, Cherif Ghoul, Darren Tremelling, Sheng Zhong, Colin Tschida, Giulio Secondo
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Patent number: 10811915Abstract: A rotor (10) for an electric motor has a force-transmission region (11) which is operatively connected to a motor shaft (12). A torque-transmission region (13) which is composed of fibre composite materials is adjacent to the force-transmission region (11). A magnetic connection region (14) and a region (15) for magnetic field guidance with magnets (16) are arranged on that side of the torque-transmission region (13) which is situated opposite the force-transmission region (11). The motor shaft can also be formed from fibre composite materials. Since the magnetic connection region (14) has a plastic which is provided with a magnetic or magnetizable filler, a rotor for an electric motor and also a motor shaft which interacts with said rotor which are of lightweight construction are provided, said rotor and motor shaft meeting the required performance criteria.Type: GrantFiled: March 4, 2016Date of Patent: October 20, 2020Assignee: ARBURG GMBH & CO KGInventors: Werner Faulhaber, Eberhard Dufner, Jan-Peter Jastrzembski, Simon-Frederik Koch, Timo Müller, Marina Mrkonjic, Manuel Peter
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Patent number: 10726983Abstract: A rare earth magnet capable of reducing an eddy current loss by virtue of a low-cost, simple configuration, when mounted in a motor, is to be provided. The rare earth magnet can include a magnet body that includes a rare earth element and iron; and a resistive layer formed on at least one surface of the magnet body, the resistive layer comprising a rare earth element, iron, and oxygen and having an average volume resistivity of 103 ?cm or more and a thickness of from 3 to 25 ?m.Type: GrantFiled: February 23, 2017Date of Patent: July 28, 2020Assignee: TDK CORPORATIONInventors: Jun Hagiwara, Fumitaka Baba, Makoto Iwasaki, Satoshi Koga
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Patent number: 10612545Abstract: A gear pump has a pump body, a pump cylinder connected with the pump body, a driving gear and a driven gear meshed with each other and disposed in the pump cylinder, and a rotor driving the driving gear through a driving shaft, and a sealing member. The pump cylinder is located between the pump body and the sealing member. The driving gear is mounted to or integrally formed with the driving shaft. The open end of the sealing member extends out of the outer housing and is sealingly connected with the pump cylinder so as to form a cavity, and the rotor and the driving gear mounted on the driving shaft are received in the cavity and have a coaxiality with the stator.Type: GrantFiled: April 19, 2019Date of Patent: April 7, 2020Assignee: JOHNSON ELECTRIC INTERNATIONAL AGInventors: Mohanlal Ramadoss, Wu Liu, Chi Hang Ngai
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Patent number: 10581304Abstract: A stator manufacturing apparatus includes an insertion tool that is insertable into a stator core and being configured to dispose a pair of side parts of a stator coil in two holding grooves. A pressing tool has plate-like pushers arranged to correspond to the positions of the holding grooves. The pressing tool pushes out the side parts of the stator coils and inserts the side parts into the corresponding slots. A pair of shaping tools face coil end parts of the stator coils. A plurality of slits through which the pushers are insertable are provided in a principal surface of each shaping tool. A shaping tool moving unit shapes the coil end parts by pressing the pair of shaping tools in an axial direction with the pushers inserted in each of the corresponding holding grooves.Type: GrantFiled: February 29, 2016Date of Patent: March 3, 2020Assignee: NITTOKU CO., LTD.Inventor: Kenichi Muto
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Patent number: 10478268Abstract: An electric motor that enables to promote a further downsizing and performance enhancement, and a dental device that includes the electric motor. A brushless slotless electric motor 10 includes: a stator 3 that includes a stator core 301 and a plurality of coils 31 to 33 disposed inside of the stator core 301; a rotor 2 that includes a shaft 21, the rotor 2 being rotated around the shaft 21 with respect to the stator 3; and a medium pathway 40 through which a medium passes, the medium being supplied for actualizing a function of a dental handpiece 9A to which the electric motor 10 is applied. The plurality of coils 31 to 33 are adjacent to each other in a rotation direction of the rotor 2 so as not to lap mutually. The medium pathway 40 is disposed between the adjacent coils 31 to 33.Type: GrantFiled: July 30, 2015Date of Patent: November 19, 2019Assignee: NAKANISHI INC.Inventor: Akito Nakamura
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Patent number: 10250106Abstract: A stator which prevents deformation of component elements of the stator and which effectively removes heat generated by coils at the time of operation. The stator of a motor comprises a stator core having a cylindrical back yoke and teeth projecting out from the back yoke to the inside in the diametrical direction, coils wound around the teeth, an outer cylinder surrounding the back yoke, and heat conducting parts abutting against both an inner circumferential surface of the outer cylinder and coil ends of the coils.Type: GrantFiled: March 1, 2016Date of Patent: April 2, 2019Assignee: FANUC CORPORATIONInventor: Tatsuya Senoo
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Patent number: 10243434Abstract: A stator of an electric motor includes a core and a covering overmolded on the core. The mold for overmolding the covering on the core includes first and second cavity-defining portions and pluralities of first and second pins extending at least generally toward opposite ones of the cavity-defining portions. The cavity is configured to receive the core therein. The first pins and the second pins are configured to extend into the cavity when the mold is in the closed position to cooperatively at least in part secure the core in the cavity.Type: GrantFiled: June 30, 2015Date of Patent: March 26, 2019Assignee: Nidec Motor CorporationInventors: Michael W. Major, Matthew D. Allen
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Patent number: 10211711Abstract: A rotor of an electric machine includes a plurality of permanent magnets arranged on an exterior of the rotor, and a bandage tape wound around the permanent magnets for fixing the permanent magnets in place. The bandage tape includes a first tape end, which is fastened to a surface of at least one permanent magnet, and a second tape end, which is an end of an outermost tape section of the bandage tape and is fastened to a tape section of the bandage tape disposed below the outermost tape section. The bandage tape is wound around the permanent magnets with a prestress such that in a region of each permanent magnet, at least one tape section of the bandage tape has a predeterminable minimum prestress.Type: GrantFiled: April 26, 2016Date of Patent: February 19, 2019Assignee: Siemens AktiengesellschaftInventors: Rainer Eckert, Andreas Kraus
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Patent number: 10090726Abstract: The motor includes a motor body to rotate a shaft by generating a rotating magnetic field; a bearing supporting the shaft; and a bracket being electrically non-conductive, surrounding an outer periphery of the bearing, and supporting the bearing, wherein the bracket is not in contact with any member formed of conductive material at an outer periphery of the bracket.Type: GrantFiled: July 3, 2013Date of Patent: October 2, 2018Assignee: Mitsubishi Electric CorporationInventors: Yukihiko Kawanori, Hironori Yabuuchi, Nobuaki Miyake, Kazuhiko Baba, Tomoki Hayashi
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Patent number: 10020715Abstract: In a first aspect, a method is provided for manufacturing a permanent magnet module for a generator by using a mold with a resin inlet and a heating system for heating the inside of the mold. The method comprises placing inside the mold a module base with one or more receptacles for receiving permanent magnets, and inserting permanent magnets in the receptacles of the module base. The method further comprises closing the mold having in its inside the module base with inserted permanent magnets, and introducing resin into the closed mold through the inlet of the mold. The method still further comprises causing the heating system to operate for at least partially curing the resin. In a second aspect, permanent magnet modules are provided manufactured by performing any of the previous methods of manufacturing a permanent magnet module.Type: GrantFiled: September 21, 2015Date of Patent: July 10, 2018Assignee: GE Renewable Technologies Wind B.V.Inventors: Adrian Bueno De Santiago, César Muñiz Casais
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Patent number: 9954410Abstract: The motor comprises a rotary unit, a stationary unit disposed around the rotary unit, and a bearing mechanism. The rotary unit comprises a plurality of magnets, a rotor core, a resin portion which covers the plurality of magnets and the rotor core. The rotor core comprises a ring-shaped inner core portion disposed at a radially inner side of the plurality of magnets, an outer core portion, and a plurality of connecting portions which radially connects the plurality of core elements, which are disposed between the plurality of magnets, and the inner core portion. The resin portion comprises an upper resin portion and a lower resin portion. The upper resin portion includes a plurality of gate holes.Type: GrantFiled: August 10, 2015Date of Patent: April 24, 2018Assignee: Nidec CorporationInventor: Eiji Furutachi
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Patent number: 9929628Abstract: A magnet insertion method into a rotor core is to insert an assembly into a magnet insertion hole provided in the rotor core of an electric motor, the assembly being formed by laminating a plurality of members, including at least a plurality of magnet pieces, in a line. According to this magnet insertion method, the assembly is formed by arranging a front member, having a surface surrounded by a chamfered ridge line, to cause the surface to be a front side end surface upon insertion, by laminating, on its rear side in an insertion direction, other members, without having the chamfered ridge line, in a line along the insertion direction to cause the other members to be hidden inside a projection of the front member when being projected from an insertion hole side, and by temporarily holding the front member and the other members.Type: GrantFiled: March 27, 2014Date of Patent: March 27, 2018Assignee: Nissan Motor Co., Ltd.Inventors: Takumi Ohshima, Kiyoshi Hasegawa, Takashi Sekikawa, Yasushi Matsushita, Akihisa Hori, Michito Kishi, Hiroaki Shibukawa
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Patent number: 9843245Abstract: An apparatus is provided for winding a laminated core with a magnet coil for an electric motor in which a conductive, insulated coil wire is wound into one or multiple pole tip grooves of a winding surface of the laminated core. The apparatus comprises a holding device, a counter holding device, and one or multiple clamping elements. The holding device is configured to fix the laminated core to be wound during a winding process. The one or multiple clamping elements are configured to fix an insulating paper to one of the one or multiple pole tip grooves.Type: GrantFiled: January 24, 2013Date of Patent: December 12, 2017Assignee: Robert Bosch GmbHInventors: Wolfgang Brielmaier, Rainer Silberer, Gyoergy Mucsi, Juergen Hagedorn, Edmar Lopes, Heiko Wurster
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Patent number: 9742230Abstract: A permanent magnet rotor including a rotor core and permanent magnets. The rotor core includes a plurality of magnetic induction blocks. A plurality of radial recesses are formed between every two adjacent magnetic induction blocks for mounting the permanent magnets. The magnetic induction blocks protrude at both sides of the opening of the radial recesses to form hook blocks. The permanent magnets include a first permanent magnet and a second permanent magnet. The first permanent magnet includes a north pole strong magnetic surface and a south pole weak magnetic surface. The second permanent magnet includes a north pole weak magnetic surface and a south pole strong magnetic surface. The first permanent magnet and the second permanent magnet are alternately disposed in the radial recesses.Type: GrantFiled: February 13, 2015Date of Patent: August 22, 2017Assignee: Zhongshan Broad-Ocean Motor Manufacturing Co., Ltd.Inventor: Mingpan Pan
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Patent number: 9705375Abstract: A molded motor made by molding, with a thermosetting resin, a stator, which includes: a stator core formed by stacking magnetic steel plates; an insulation portion applied to the stator core; a winding applied to the insulation portion; and a power supply terminal. On an insulation inner wall provided on an inner diameter side of the insulation portion, a plurality of inner wall protrusions formed at axial ends of the insulation inner wall on a counter wire-connection side of the stator core and abutting on a die, used when the stator is molded, are provided in a circumferential direction of the stator core.Type: GrantFiled: September 2, 2013Date of Patent: July 11, 2017Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Mineo Yamamoto, Mamoru Kawakubo, Hiroyuki Ishii, Hiroki Aso, Junichiro Oya, Yuto Urabe
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Patent number: 9634594Abstract: A method for determining a direction of rotation for an electronically commutated motor (ECM) is described. The motor is configured to rotate a blower and the method comprises rotating the blower using the ECM and determining if the resulting blower rotation is indicative of the desired direction of rotation for the blower.Type: GrantFiled: August 25, 2014Date of Patent: April 25, 2017Assignee: Regal Beloit America, Inc.Inventors: Stephen Solan, Jr., Brian L. Beifus, Roger C. Becerra
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Patent number: 9564790Abstract: A method for manufacturing a laminated core, in which while a laminated core body 10 formed by caulking and with permanent magnets 20 inserted in a plurality of magnet insertion holes 17, 18 is held between a resin injection die 23 and a receiving die 22 opposed to each other, resin is injected into the magnet insertion holes 17, 18 from resin reservoir portions provided to the resin injection die 23 to fix the permanent magnets 20, the method comprising: at a time of resin injection, pressing a flat press surface 24 of the resin injection die 23 against caulking portions 13 protruding from a surface of the laminated core body 10 to apply pressure thereto, thereby allowing the surface of the laminated core body 10 whereon the caulking portions 13 are formed to be pressed against the flat press surface 24 so as to prevent resin leakage.Type: GrantFiled: November 5, 2013Date of Patent: February 7, 2017Assignee: MITSUI HIGH-TEC, INC.Inventors: Akira Nagai, Jin Oda
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Patent number: 9559573Abstract: A method of manufacturing a stator of an electric rotating machine is provided. The stator includes a plurality of teeth radially extended from a yoke portion formed by stacking steel sheets, a stator core having an insulating film on a surface of the teeth, and a winding portion including a plurality of layers of a power generating coil wound around each of the plurality of teeth. The method includes: a step of forming an insulating coating film by impregnating the power generating coil in a lower layer portion of the winding portion with a varnish using a liquid-type thermosetting resin, thereafter covering the power generating coil in a surface portion of the winding portion with a thermally meltable powder resin, and melt-bonding and thereafter curing the powder resin; and a step of curing the varnish that is performed simultaneously with the step of forming an insulating coating film.Type: GrantFiled: April 25, 2013Date of Patent: January 31, 2017Assignee: Mitsubishi Electric CorporationInventor: Shinji Baba
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Patent number: 9515532Abstract: A mold motor includes a mold stator, a rotor, and a bracket. The mold stator includes a first bearing housing section formed of thermosetting resin, one bearing of the rotor fitting in one end in an axial direction of the first bearing housing section, an opening section formed at an end on the opposite side of the bearing housing section, and a bracket press-fitting section formed near the opening section and having a diameter larger than a stator inner diameter. The bracket includes a bracket resin section configuring a second bearing housing section in which the other bearing of the rotor fits and a bracket sheet metal section press-fit into the bracket press-fitting section of the mold stator. In the bracket, the bracket resin section and the bracket sheet metal section are integrally molded.Type: GrantFiled: December 28, 2011Date of Patent: December 6, 2016Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Mineo Yamamoto, Kazunori Sakanobe, Hiroyuki Ishii, Hiroki Aso, Kazuya Omura, Yasumasa Takeuchi, Katsumi Shibayama, Hitoshi Mochizuki
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Patent number: 9364980Abstract: The present disclosure relates to a molding apparatus for fixing a magnet in a rotor core of a permanent magnet synchronous motor. The present disclosure provides a molding process for a rotor of a motor which can reduce manufacturing costs through alleviation of a tolerance of an introduced product and reduction of an error rate of a finished injection-molding product, by applying a lift core which may variably move in a mold during an insert injection molding process for molding a rotor and accordingly a new type of rotor molding method for a permanent magnet synchronous motor which prevents generation of a flash in an injection molding process even when the size and tolerance of the introduced product deteriorate as compared with a mold.Type: GrantFiled: December 12, 2014Date of Patent: June 14, 2016Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Jae Young Kie, Jung Woo Lee, Kwang Keyong Sung
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Patent number: 9178394Abstract: A rotor includes a laminated core, a plurality of magnets, and a resin portion. The laminated core includes a plurality of outer core portions arranged in a circumferential direction. The plurality of outer core portions and the plurality of magnets are alternately arranged in the circumferential direction. In addition, the outer core portion includes a through-hole that penetrates in an axial direction. The resin portion includes a columnar portion that is disposed inside the through-hole. Accordingly, the rigidity of the resin portion is enhanced. In addition, the resin portion includes a gate mark portion. At least a portion of the gate mark portion is positioned farther radially inward than the through-hole.Type: GrantFiled: January 7, 2013Date of Patent: November 3, 2015Assignee: Nidec CorporationInventors: Kyohei Asahi, Kenichiro Hamagishi, Kuniaki Tanaka, Susumu Terada
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Publication number: 20150145351Abstract: The present invention relates to a method for potting a stator of an electric machine, including:—introducing an expandable, preferably elastically deformable, non-metallic shell in a non-expanded state into the stator,—expanding the shell,—pouring a resin around the shell, inside the stator,—retracting and removing the shell after the resin has set.Type: ApplicationFiled: April 26, 2013Publication date: May 28, 2015Applicant: MOTEURS LEROY-SOMERInventors: Sébastien Porcher, Haikel Gherairi, Stéphane Dufau
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Publication number: 20150145353Abstract: A manufacturing method of a stator is a method for manufacturing the stator using molds. The stator is constructed so that a stator main body and resin molded portion are integrated. The stator main body includes a terminal portion and a core. The manufacturing method includes: arranging the stator main body such that the terminal portion is located on a top portion of the molds; and filling a cavity with resin. The terminal portion has a gas discharging port configured to discharge gas out of the cavity from inside the cavity in the molds.Type: ApplicationFiled: November 24, 2014Publication date: May 28, 2015Inventors: Masahiro KINO, Yukihisa YAMAMOTO, Masashige TANAKA
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Patent number: 9028736Abstract: An apparatus for fabricating a semiconductor package may include a mold and a molding plate. The mold may define a mold cavity with the mold being configured to receive a circuit board in the mold cavity, and the circuit board may include a semiconductor chip mounted thereon. A molding plate may be moveable in the mold cavity with the molding plate being configured to adjust a volume of the mold cavity. Related methods are also discussed.Type: GrantFiled: January 31, 2014Date of Patent: May 12, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Youngshin Choi, Kikwon Jeong
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Publication number: 20150048914Abstract: In an ignition coil, a housing has an inner chamber, and a transformer is installed in the inner chamber of the housing. A molded side-core assembly of a transformer includes an arched side core magnetically coupled to first and second ends of a longitudinal center core and located outside a circumferential part of primary and secondary windings. The molded side-core assembly includes an insulation cover molded to cover at least part of the arched side core. The insulation cover has a surface and at least one molding mark formed on the surface thereof. An insulation filler is filled in the inner chamber of the housing while the at least part of the arched side core is exposed from the insulation filler and the at least one molding mark is hermetically sealed in the insulation filler.Type: ApplicationFiled: August 19, 2014Publication date: February 19, 2015Inventor: Yoshitaka SATOH
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Publication number: 20140373658Abstract: A gear box includes a gear box body of a reducer to which a motor is mounted. The gear box body includes a worm, wheel holding section where a worm wheel of the reducer is held, and a motor holding section, where a part of the motor is contained, the motor holding section having a motor mounting opening. The motor holding section is configured such that a bottom of the motor holding section is provided in a region between a line L1 and a line L2. Here, the line L1 passes through the center C of the worm wheel holding section and is perpendicular to the axis line X of a motor shaft. The line L2 is a tangent line passing through an outer edge portion located near a circular outer peripheral wall of the worm wheel holding section on a motor side and is perpendicular to the axis line X of the motor shaft.Type: ApplicationFiled: June 18, 2014Publication date: December 25, 2014Inventors: Takashi Tamaki, Satoshi Kikuchi
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Publication number: 20140339929Abstract: The invention relates to a laminated core, preferably a stator laminated core or a rotor laminated core (2), of an electric machine, in particular an electric fuel pump of a motor vehicle. The laminated core comprises slots (6), each of which has a slot insulation (7), and winding wires of at least one electric winding (10), said wires running in the slots (6). A plastic encapsulation (17) encases the laminated core together with the winding wires which run in the slots (6) at least in some regions. The plastic encapsulation (17) and the slot insulation (7) each consist of a thermoplastic, and the plastic of the slot insulation (7) has a melting point which is equal to, similar to, or lower than the melting point of the plastic of the plastic encapsulation (17) such that the encapsulation process causes the slot insulation (7) to melt, thereby bonding the slot insulation (7) to the plastic encapsulation (17). The invention further relates to a method for producing a laminated core and to an electric machine.Type: ApplicationFiled: December 27, 2012Publication date: November 20, 2014Inventors: Oliver Himmel, Ursula Stucke, Joost Nowak, Ingo Buchholz, Alexis Spinner
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Publication number: 20140319841Abstract: A waste heat utilization system including a generator configured to receive a flow of an organic working fluid and a method of manufacturing the generator component is provided. The method includes preheating the generator component. The method also includes applying a varnish or an encapsulating layer to the generator component. The method further includes baking the generator component with the varnish applied thereto. The method yet further includes cooling the generator component.Type: ApplicationFiled: July 8, 2014Publication date: October 30, 2014Inventors: James Jun Xu, Eric Joseph Blumber, Albert Andreas Scharl
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Patent number: 8869379Abstract: A method of producing a rotor includes crimping and stacking a plurality of core pieces through crimping connecting portions to form a rotor stacked core having a magnet-insertion hole and inserting a permanent-magnet pieces into the magnet-insertion hole. Further, the method also includes clamping the rotor stacked core between an upper die and a lower die, and filling a resin into the magnet-insertion hole from a resin reservoir pot which is formed in the upper die or the lower die. Also, the resin may be filled into the magnet-insertion hole while placing the crimping connecting portions at a center of the resin reservoir pot.Type: GrantFiled: November 9, 2010Date of Patent: October 28, 2014Assignee: Mitsui High-Tec, Inc.Inventors: Hirotoshi Mabu, Kohei Yoshida
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Publication number: 20140151926Abstract: A laminated rotor core (36) wherein permanent magnets (47) are inserted in respective magnet insertion holes (46) is disposed between and pressed by an upper die (37) and a lower die (29). The upper die (37) has resin reservoir pots (50) provided above the laminated rotor core (36) and at positions corresponding to the respective magnet insertion holes (46). Raw resin material put in the resin reservoir pots (50) is heated by the upper die (37). Subsequently, the resin material in a liquefied state is ejected from the resin reservoir pots (50) by plungers (52) that are inserted and moves vertically in the resin reservoir pots (50) and is directly filled in the magnet insertion holes (46). Consequently, the respective magnet insertion holes (46) are filled with the resin material more evenly and highly reliable products can be supplied at low cost.Type: ApplicationFiled: February 4, 2014Publication date: June 5, 2014Applicant: MITSUI HIGH-TEC, INC.Inventors: Satoshi Matsubayashi, Hirotoshi Mabu, Katsumi Amano, Atsushi Shiraishi
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Patent number: 8728375Abstract: A laminated rotor core (36) wherein permanent magnets (47) are inserted in respective magnet insertion holes (46) is disposed between and pressed by an upper die (37) and a lower die (29). The upper die (37) has resin reservoir pots (50) provided above the laminated rotor core (36) and at positions corresponding to the respective magnet insertion holes (46). Raw resin material put in the resin reservoir pots (50) is heated by the upper die (37). Subsequently, the resin material in a liquefied state is ejected from the resin reservoir pots (50) by plungers (52) that are inserted and moves vertically in the resin reservoir pots (50) and is directly filled in the magnet insertion holes (46). Consequently, the respective magnet insertion holes (46) are filled with the resin material more evenly and highly reliable products can be supplied at low cost.Type: GrantFiled: August 20, 2012Date of Patent: May 20, 2014Assignee: Mitsui High-Tec, Inc.Inventors: Satoshi Matsubayashi, Hirotoshi Mabu, Katsumi Amano, Atsushi Shiraishi
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Publication number: 20140124980Abstract: A method for manufacturing a laminated core, in which while a laminated core body 10 formed by caulking and with permanent magnets 20 inserted in a plurality of magnet insertion holes 17, 18 is held between a resin injection die 23 and a receiving die 22 opposed to each other, resin is injected into the magnet insertion holes 17, 18 from resin reservoir portions provided to the resin injection die 23 to fix the permanent magnets 20, the method comprising: at a time of resin injection, pressing a flat press surface 24 of the resin injection die 23 against caulking portions 13 protruding from a surface of the laminated core body 10 to apply pressure thereto, thereby allowing the surface of the laminated core body 10 whereon the caulking portions 13 are formed to be pressed against the flat press surface 24 so as to prevent resin leakage.Type: ApplicationFiled: November 5, 2013Publication date: May 8, 2014Applicant: MITSUI HIGH-TEC, INC.Inventors: Akira Nagai, Jin Oda
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Publication number: 20140042834Abstract: A rotor includes a laminated core, a plurality of magnets, and a resin portion. The laminated core includes a plurality of outer core portions arranged in a circumferential direction. The plurality of outer core portions and the plurality of magnets are alternately arranged in the circumferential direction. In addition, the outer core portion includes a through-hole that penetrates in an axial direction. The resin portion includes a columnar portion that is disposed inside the through-hole. Accordingly, the rigidity of the resin portion is enhanced. In addition, the resin portion includes a gate mark portion. At least a portion of the gate mark portion is positioned farther radially inward than the through-hole.Type: ApplicationFiled: January 7, 2013Publication date: February 13, 2014Applicant: NIDEC CORPORATIONInventors: Kyohei ASAHI, Kenichiro HAMAGISHI, Kuniaki TANAKA, Susumu TERADA
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Patent number: 8647110Abstract: An apparatus for fabricating a semiconductor package may include a mold and a molding plate. The mold may define a mold cavity with the mold being configured to receive a circuit board in the mold cavity, and the circuit board may include a semiconductor chip mounted thereon. A molding plate may be moveable in the mold cavity with the molding plate being configured to adjust a volume of the mold cavity. Related methods are also discussed.Type: GrantFiled: August 10, 2010Date of Patent: February 11, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Youngshin Choi, Kikwon Jeong
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Patent number: 8623263Abstract: A process for curing a porous muffler preform defined by a plurality of glass fibers and a heat-curing thermoset or thermoplastic materials applied to the plurality of glass fibers is disclosed herein. The process includes the step of enclosing the muffler preform in a chamber. The process also includes the step of surrounding the muffler preform with steam. The process also includes the step of causing steam to enter the muffler preform from multiple directions.Type: GrantFiled: September 21, 2009Date of Patent: January 7, 2014Assignee: OCV Intellectual Capital, LLCInventors: Norman T. Huff, Janakikodandaram Karra
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Patent number: 8623254Abstract: A method for producing a magnetic field sensor for use in drive train of a motor vehicle includes encapsulating an electrical assembly and an end of a connecting cable via injection molding and integrally extruding a fastening tab. After a first injection step in which the electrical assembly and the connecting cable are encapsulated in a core-type first molded part, a second injection molding step in implemented in which a fastening tab is integrally formed via injection molding on the core-type insertion part in a specifiable longitudinal and/or angular position. The core-like insertion part is held in the injection mold in a longitudinally displaceable and/or rotatable manner.Type: GrantFiled: November 26, 2008Date of Patent: January 7, 2014Assignee: Robert Bosch GmbHInventors: Rolf Goetz, Steffen Schulze, Daniel Matthie, Markus Kny, Frank Weishaeutel
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Publication number: 20130307353Abstract: A magnet-type power generator includes a rotor having a bowl-shaped flywheel and plural magnets disposed on an inner circumferential surface of the flywheel so as to be spaced at a predetermined interval, and a stator having plural cores facing the magnets and each having a coil wound therearound. The magnets include a bonded magnet integrally molded with the flywheel.Type: ApplicationFiled: September 13, 2012Publication date: November 21, 2013Applicant: MITSUBISHI ELECTRIC CORPORATIONInventor: Toshio MAEKAWA
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Patent number: 8551384Abstract: A permanent-magnet rotor for external-rotor electric motor (1) particularly for washing machines of unusual silence comprising a cup-shaped support structure (6) having a bottom (7) and a side wall (10) and a plurality of magnetic poles (12) arranged in the support structure (6) and arranged along said side wall (10), with elastomeric material interposed between said magnetic poles (12) which forms with them a massive structure (14) of uniform thickness.Type: GrantFiled: August 24, 2006Date of Patent: October 8, 2013Assignee: Askoll Holding S.r.l.Inventor: Elio Marioni
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Patent number: 8479378Abstract: Method of manufacturing a stator core includes stacking a plurality of substantially T-shaped teeth obtained from a jigsaw pattern of said teeth into a plurality of stacks. In each said stack, said teeth are substantially aligned with each other. Said method includes winding said stacks with a plurality of windings and placing said stacks along the perimeter of a polygonal outer surface of a ferromagnetic tube having an inner channel. Each side of said outer surface corresponds to each said stack and contacts the bases of said legs of each said stack. Said method includes inserting said stacks and said tube into an inner space defined by an annular inner surface of a mold and a shaft into said channel. Said stacks are stationed along the circumference of said inner surface. Said method includes vacuum encapsulating said inner space in epoxy resin and removing said mold and shaft.Type: GrantFiled: February 9, 2012Date of Patent: July 9, 2013Inventor: John Pairaktaridis
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Patent number: 8347485Abstract: A procedure for centrifugally casting a shorted structure around induction motor rotors is described. The method is commonly applied to a plurality of rotors disposed and arranged for rotational balance and supported on a suitable support, or optionally, on a plurality of supports arranged in layered fashion about a common rotational axis. The method comprises forming a wax representation of the shorted structure around a lamination stack; mounting a plurality of such lamination stacks in a mounting fixture and-attaching a suitable gating and runner system; forming an investment by coating the structure with refractory followed by melting out the wax; casting molten metal into the investment while it is rotating and aligning the mold to allow the centrifugal force generated to promote mold filling; and, continuing to rotate the investment until solidification is substantially complete.Type: GrantFiled: February 12, 2010Date of Patent: January 8, 2013Assignee: GM Global Technology Operations LLCInventors: Scott W. Biederman, Mark A. Osborne, Michael J. Walker, Thomas A. Perry
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Patent number: 8333007Abstract: A fuel pump includes a pump portion for pumping fuel. The fuel pump further includes a magnet having magnetic poles circumferentially alternate with each other. The fuel pump further includes an armature on a radially inside of the magnet. The armature includes a rotor core provided with a coil formed of a wire. The armature is rotatable for driving the pump portion. A commutator, which is in a substantially disc shape, is provided to an axial end of the armature for rectifying electricity supplying to the coil. The rotor core has an axial end having an outer circumferential periphery defining a commutator-side collar portion extending toward the commutator. The coil is formed by winding the wire between an outer circumferential periphery of the commutator and the commutator-side collar portion.Type: GrantFiled: June 15, 2009Date of Patent: December 18, 2012Assignee: Denso CorporationInventors: Kiyonori Moroto, Akira Kuroyanagi, Tadashi Hazama
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Patent number: 8268219Abstract: A laminated rotor core (36) wherein permanent magnets (47) are inserted in respective magnet insertion holes (46) is disposed between and pressed by an upper die (37) and a lower die (29). The upper die (37) has resin reservoir pots (50) provided above the laminated rotor core (36) and at positions corresponding to the respective magnet insertion holes (46). Raw resin material put in the resin reservoir pots (50) is heated by the upper die (37). Subsequently, the resin material in a liquefied state is ejected from the resin reservoir pots (50) by plungers (52) that are inserted and moves vertically in the resin reservoir pots (50) and is directly filled in the magnet insertion holes (46). Consequently, the respective magnet insertion holes (46) are filled with the resin material more evenly and highly reliable products can be supplied at low cost.Type: GrantFiled: January 24, 2011Date of Patent: September 18, 2012Assignee: Mitsui High-Tec, Inc.Inventors: Satoshi Matsubayashi, Hirotoshi Mabu, Katsumi Amano, Atsushi Shiraishi
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Patent number: 8262971Abstract: A method for centralising and retaining a molded end coil (20) in a magnet former (12) which includes an oversleeve (24) for retaining the end coil in position, the radially outer (A2) surface of the end coil being of lesser diameter than the radially inner surface of the oversleeve.Type: GrantFiled: November 16, 2007Date of Patent: September 11, 2012Assignee: Siemens PlcInventor: Simon James Calvert
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Patent number: 8217539Abstract: An electric motor comprising an annular stator core, a resin molding the stator core, a casing member housing the stator core, wherein the casing member has an opening, and the resin is filled into the opening.Type: GrantFiled: September 25, 2009Date of Patent: July 10, 2012Assignee: Sanyo Electric Co., Ltd.Inventors: Tetsuji Ueta, Hiroaki Sagara, Takeshi Nagao, Takashi Uchino, Kenji Taguchi