Dirt, Moisture Or Explosion Proof Patents (Class 310/88)
  • Patent number: 10756582
    Abstract: A stator for an electric motor, the stator comprising a back-iron having a first surface and a heat sink having a second surface, wherein the first surface of the back-iron includes a plurality of keying features arranged to retain the heat sink to the back-iron, wherein the heat sink is arranged to provide cooling to the back-iron via the second surface, and wherein the second surface has complementary keying features to the plurality of keying features on the first surface that are formed by casting the heat sink on the first surface of the back-iron.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: August 25, 2020
    Assignee: PROTEAN ELECTRIC LIMITED
    Inventor: Gareth Roberts
  • Patent number: 10720811
    Abstract: An electric motor for vehicle including a stator; a stator support member; a rotation shaft; a rotor including a bottom wall and a peripheral wall, in which the peripheral wall is provided with a magnet and the bottom wall is configured to be combined with the rotation shaft; and a bearing holder including a tube part, and a water drip hole is formed on a vertically lower side of the tube part, the stator support member being provided with a bearing holder insertion part including a boss part into which the tube part is configured to be inserted, wherein a water drain structure configured to drain a water drop from the water drip hole is provided along a circumferential direction of an inner circumferential surface of the boss part in a vertically lower area of the inner circumferential surface of the boss part.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: July 21, 2020
    Assignee: Mitsuba Corporation
    Inventors: Keiichi Hosoi, Shuichi Tsujiyama, Mikio Kawamura, Shingo Watanabe, Hiroki Masuyama, Takeshi Tonegawa, Minoru Ota
  • Patent number: 10260510
    Abstract: A fan includes: a casing including a substantially cup-shaped base portion connected to an outer frame through a rib, the base portion having a top surface located on a upper side of an axial direction and a lower opening located on a lower side of the axial direction; a bearing housing hanging down from a center of the top surface of the base portion toward the lower opening; a stator housing portion formed by the base portion and the bearing housing; a stator having a circuit board disposed in the stator housing portion by being fitted to an outer peripheral surface of the bearing housing; bearings fitted to an inner peripheral surface of the bearing housing; an impeller rotating around a shaft as a central axis, shaft being rotatably supported by the bearings; and an insulating material filling the stator housing portion to cover the stator and the circuit board.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: April 16, 2019
    Assignee: MINEBEA CO., LTD.
    Inventor: Toru Narita
  • Patent number: 10243421
    Abstract: A motor vehicle auxiliary assembly electric motor includes a motor stator with stator coils. The motor stator is electronically commutated. A control electronics system drives the stator coils and is potted in a cast body. An electronics chamber is closed-off and has the control electronics system and the cast body arranged therein. A gas chamber is arranged adjacent to the cast body. A pressure equalization element ventilates and vents the gas chamber. An aeration shaft is arranged to pass through the cast body and fluidically connects the gas chamber to the atmosphere. The pressure equalization element is fluidically associated with the aeration shaft.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: March 26, 2019
    Assignee: PIERBURG PUMP TECHNOLOGY GMBH
    Inventors: Wolfgang Haensch, Maik Waberski, Michael Weinert, Joerg Hartzendorf, Ronald Rathke, Thomas Wienecke
  • Patent number: 10199899
    Abstract: Disclosed herein are pressure attenuator devices for rotating electrical machines, The pressure attenuation device contains a screen with a plurality of openings, wherein the screen is positioned within the internal cavity and configured to segregate a flame front propagating from an ignition source formed by a combustion process originated in the cavity. Thus, with the use of the pressure attenuation device, an expressive reduction of pressure inside the cavity of the rotating electrical machine is obtained.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: February 5, 2019
    Assignee: WEG EQUIPMENTOS ELÉTRICOS S.A.
    Inventor: Cassiano Antunes Cezario
  • Patent number: 10164498
    Abstract: A fan device includes: a stator core having a plurality of salient poles that protrude outwards in a radial direction; a rotor magnet that is rotatably provided outside the stator core; and a dustproof cover mounted to the stator core and positioned between the stator core and the rotor magnet, wherein the dustproof cover has a cylindrical part having an inner surface being provided with one or more convex part, the convex part being fitted into a slot gap between distal ends of adjacent two of the salient poles.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: December 25, 2018
    Assignee: Minebea Co., Ltd.
    Inventor: Shuichi Otsuka
  • Patent number: 10145380
    Abstract: A thrust bearing suspension system and apparatus is described. A thrust bearing suspension system includes an electric submersible pump including at least two impellers, each of the at least two impellers paired with a diffuser, a thrust bearing set between two of the at least two impellers, the thrust bearing set comprising a bushing moveable axially between the two impellers and pivotable along a bushing-to-diffuser pivot key, and a retaining ring on a rim of the bushing constraining the axial movement of the bushing, the retaining ring extending across a radial tolerance between the bushing and at least one of the diffusers.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: December 4, 2018
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Gregory Austin Davis, Larry James Parmeter
  • Patent number: 10102876
    Abstract: In a spindle motor, a cup portion of a base member includes a cylindrical portion coaxial or substantially coaxial with a central axis extending in a vertical direction and a bottom plate portion defined integrally with the cylindrical portion, and located to close a lower portion of the cylindrical portion. The bearing mechanism is inside of the cup portion and an outer circumferential surface of the bearing mechanism and an inner circumferential surface of the cylindrical portion include a first adhesive layer located therebetween. The base member includes a communicating hole that passes through the bottom plate portion in an axial direction. The communicating hole includes a second adhesive layer located therein.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: October 16, 2018
    Assignee: NIDEC CORPORATION
    Inventors: Tomohiro Yoneda, Takeshi Ohiro, Takayuki Ishino
  • Patent number: 9876408
    Abstract: An electric machine includes an electric machine having a housing defining a cavity in the housing. The housing has an internal wall of the housing defining an aperture extending from an exterior of the housing to the cavity. The machine also includes a stator secured to the housing and a rotor. The rotor is rotatably secured to the housing. The machine also includes a component positionable in the aperture and a sealing member. The sealing member is operably associated with the component. At least a portion of the sealing member is made of a conformable material and adapted for engagement with the housing. The internal wall of the housing is adapted to radially engage the conformable portion of the sealing member.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: January 23, 2018
    Assignee: Regal Beloit America, Inc.
    Inventors: Mark Lyon Klopp, Zachary Joseph Stauffer, Edward Lewis Drye
  • Patent number: 9837870
    Abstract: A water-resistant electric motor having an end bell with a passage that prevents the formation of a vacuum between the shaft seal and the shaft bearing. The passage extends from the interior region of the motor through the end bell bypassing the bearing to communicate with a gap between the seal and the bearing. The motor housing includes a vent to expose the motor's interior region and the gap to atmospheric pressure or to a source of higher-pressure air or gas to prevent water from being sucked into the motor's interior.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: December 5, 2017
    Assignee: Laitram, L.L.C.
    Inventor: Christopher G. Greve
  • Patent number: 9722469
    Abstract: A housing of a driving device, in particular an electric motor adjustment drive for a motor vehicle, has a housing opening, which is covered by a gas-permeable membrane, in particular a membrane that is impermeable to liquid. The housing opening is surrounded by a collar contour, which is interrupted locally at the circumference and within which the membrane lies.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: August 1, 2017
    Assignee: Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Wuerzburg
    Inventors: Andreas Schweichart, Peter Klingler
  • Patent number: 9634536
    Abstract: An enclosure system includes a stator enclosure defining an enclosure opening, and an adapter having a first entry port, and defines a center cavity having a first volume. Enclosure system includes a conduit enclosure coupled to one or more of stator enclosure and adapter. Conduit enclosure includes a base member having at least one side wall, a rear wall coupled to side wall and defining a second entry port, an interior cavity, and a terminal connection block coupled to base member and having at least one terminal. Enclosure system includes at least one electrical lead extending from the stator enclosure through first enclosure opening, through first entry port, through center cavity, through second entry port, and into the interior cavity. Electrical lead occupies a portion of first volume and leaves a remaining volume. Enclosure system includes sealing compound coupled with adapter such that substantially all of remaining volume is occupied.
    Type: Grant
    Filed: April 9, 2013
    Date of Patent: April 25, 2017
    Assignee: General Electric Company
    Inventors: Sasidharan Nair, Praveen Kumar Garlapati
  • Patent number: 9618136
    Abstract: A rotary valve position indicator is disclosed. An example apparatus includes an actuator housing defining an explosion-proof enclosure boundary. An actuator output shaft has a first shaft portion and a second shaft portion. The first shaft portion is partially disposed within the explosion-proof enclosure boundary, and the second shaft portion is disposed outside of the explosion-proof enclosure boundary. A visual position indicator is disposed on the second shaft portion of the actuator output shaft and indicates the rotational position of the actuator output shaft relative to the actuator housing.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: April 11, 2017
    Assignee: Fisher Controls International LLC
    Inventor: Brandon Wayne Bell
  • Patent number: 9601965
    Abstract: An enclosure system for isolating a conduit enclosure for an explosion proof motor is provided. The enclosure system includes a stator enclosure defining a first enclosure opening. The enclosure system also includes a conduit enclosure coupled to the stator enclosure. The conduit enclosure comprises at least one side wall, a rear wall coupled to the side wall, and an interior cavity. The rear wall defines a first entry port having a first volume. The enclosure system further includes at least one electrical lead. The at least one electrical lead extends through the first enclosure opening, through the first entry port, and into the interior cavity. The at least one electrical lead occupies a portion of the first volume and leaves a remaining volume. The enclosure system also includes sealing compound. The sealing compound is coupled with the first entry port such that substantially all of the remaining volume is occupied.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 21, 2017
    Assignee: General Electric Company
    Inventors: Praveen Kumar Garlapati, Sachin Vitthal Mahajan, Sasidharan Nair
  • Patent number: 9593761
    Abstract: A system for venting a hybrid electric powertrain includes a module defining a first volume containing a clutch and an electric machine, a housing defining a second volume containing an automatic transmission, and lines producing mutual pneumatic connections among the first volume, the second volume and ambient atmosphere.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: March 14, 2017
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Steven A. Frait, John E. Brevick
  • Patent number: 9400054
    Abstract: A mechanical seal device includes a rotary ring 7 which is fixed to a rotary shaft 300, a fixed ring 4 which is slidably in contact with the rotary ring 7 and forms an annular seal surface S, a bellows 5 which supports the fixed ring 4 so as to bias the fixed ring 4 toward the rotary ring 7, a spring 6 which biases the fixed ring 4 toward the rotary ring 7, and a seal cover 2 which is attached to a housing 200, supports the bellows 5 such that an outer peripheral surface of the bellows 5 is on the inside A of the housing 200 relative to the seal surface S, and supports the spring 6 at a position located on the outside B of the housing 200 relative to the seal surface S and side by side with the bellows 5.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: July 26, 2016
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventor: Yoshihiro Suefuji
  • Patent number: 9366262
    Abstract: A fan motor includes a motor; an impeller; a motor control board; an AC/DC converter board; electronic components mounted on the AC/DC converter board; and a housing arranged to contain the motor, the impeller, the motor control board, and the AC/DC converter board. The housing includes a base portion arranged to hold a stationary portion of the motor on an axially upper side thereof; and a case portion arranged to extend to assume a tubular shape on an axially lower side of the base portion. The AC/DC converter board is arranged in an interior space of the case portion. At least a portion of the interior space is filled with a resin material. Surfaces of the AC/DC converter board and the electronic components are covered with the resin material. The fan motor further includes a projecting portion arranged to project into the interior space.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: June 14, 2016
    Assignee: NIDEC CORPORATION
    Inventors: Yoshiaki Oguma, Masamune Hiraki, Ryota Hayashida, Makoto Kobayashi, Shinsuke Hamano
  • Patent number: 9255784
    Abstract: The contactless angular position detection device includes a main casing (1) having a through opening (2) formed about a geometric axis (E) and a rotary element (3) to which a permanent magnet (4) is fixed. The rotary element (3) is mounted inside the main casing (1) to rotate with respect thereto about the geometric axis (E) Further, an electronic circuit 5 is mounted inside the main casing (1) and which includes a sensor (7) capable of detecting variations in the magnetic field produced by the permanent magnet (4) when rotating with respect to the main casing (1), a secondary casing (9) coupled to the main casing (1), and plug connection housed in or supported by the secondary casing (9) for connecting said electronic circuit 5 to the outside. The main casing (1) and secondary casing (9) are permanently and tightly attached.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: February 9, 2016
    Assignee: PIHER SENSORS & CONTROL S.A.
    Inventor: César Bueno Palacios
  • Patent number: 9099896
    Abstract: A stator for an electric motor, in particular for an external rotor motor, has a basic body (3) with a laminated stator core and with stator coils arranged on the laminated stator core. Each of the stator coils has a winding wire start and a winding wire end. Each winding wire start is attached to contact pins. The basic body (3) is extrusion-coated with a sleeve made from plastic, from which contact pins at least partially protrude. In order to reduce the manufacturing costs, a contact holder (2) encased in the sleeve together with the basic body (3) is pushed via the free ends of the contact pins onto the basic body (3), wherein the contact holder (2) encases the contact pins with a sealing section (11) in a gap-free, sealing manner.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: August 4, 2015
    Assignee: EBM-PAPST MULFINGEN GMBH & CO. KG
    Inventors: Walter Hofmann, Rolf Bickel
  • Publication number: 20150145355
    Abstract: A prime mover assembly is suitable for use in a hazardous environment. The prime mover assembly includes a hazardous rated enclosure, a non-hazardous rated prime mover disposed in the enclosure, and a gland assembly extending through the enclosure in communication with the prime mover. The gland assembly provides power and instrumentation through the enclosure to the prime mover.
    Type: Application
    Filed: May 16, 2013
    Publication date: May 28, 2015
    Inventors: Jesse Kincaid, John Siggelkow
  • Publication number: 20150130310
    Abstract: A motor includes a housing, a back cover, a brush card, and a brush. The brush card is disposed in a casing defined by the housing and the back cover. The brush is disposed on a front side of the brush card. The back cover includes a through-hole in the vicinity of a lower end portion of a first circumferential wall portion. The back cover and the brush card are in contact with each other in an annular or substantially annular shape, in a radially inner side of an inner circumferential surface of the first circumferential wall portion via a gap. The contact portion is disconnected, or the brush card is radially penetrated, at a position that radially overlaps with the through-hole.
    Type: Application
    Filed: May 17, 2013
    Publication date: May 14, 2015
    Inventors: Takashi Shiraishi, Takahiro Hiwa, Shohei Osuga
  • Publication number: 20150115755
    Abstract: A rotating electric machine includes a cover formed in a cylindrical shape and extending in an axial direction to cover the controller section, a lid section disposed inside of the cover body to seal the cover body, a first sealing member compressed between the lid section and the cover, and a second sealing member compressed in a different direction than the first sealing member between the cover and the first frame or the second frame. The rotating electric machine also includes a tab formed on an outer periphery of the first frame or the second frame, and a claw extending from the one end of the cover body and engageable with the tab to hold the sealing members in a compressed state. As a result, the rotating electric machine is sealed from dust and water.
    Type: Application
    Filed: October 28, 2014
    Publication date: April 30, 2015
    Inventors: Masashi YAMASAKI, Daisuke YAMASHITA
  • Publication number: 20150115754
    Abstract: A rotating electric machine includes a motor section and a controller section. The motor section includes an annular stator, a winding wire wound on the stator, and a rotor rotatably disposed inside the stator. The controller section is positioned in an axially non-overlapping position with the stator and controls an electric power supply to the winding wire for a drive control of the motor section. The rotating electric machine also includes a cover having a cylindrical shape which seamlessly covers the controller section and the motor section. The rotating electric machine further includes a lid section for sealing of an end part of the cover. As a result, the rotating electric machine is sealed from dust and water.
    Type: Application
    Filed: October 28, 2014
    Publication date: April 30, 2015
    Inventor: Masashi YAMASAKI
  • Patent number: 9018806
    Abstract: The present invention proposes a generator for arrangement on a shaft of an accessory gearbox of an engine with a stator and with a rotor which can be coupled to a shaft of the accessory gearbox of the engine and which is rotatably mounted relative to the stator, where a stator area receiving the stator can be separated from a rotor area receiving the rotor. The rotor can be supplied with cooling medium in the rotor area. It furthermore proposes an accessory gearbox of an engine with a drive shaft operatively connectable to a main shaft of the engine and with at least one generator arranged on a shaft of the accessory gearbox.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: April 28, 2015
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventors: Juergen Beier, Soeren Braun
  • Patent number: 9000643
    Abstract: Provided with a sealed rotational output unit (3) which includes a tubular shaft (12) having an outer circumferential surface sealed with a ferrofluidic seal (13); a rotating output shaft (14) disposed inside the tubular shaft (12); and an O-ring (17, 18) that seals between the tubular shaft (12) and the rotating output shaft (14). When the rotating output shaft (14) is directly coupled to a hollow motor shaft (9), shaking thereof is absorbed by the O-ring (17, 18), causing no excessive stress to be produced on the bearing side of the hollow motor shaft (9) or on a bearing (15, 16) side of the ferrofluidic seal (13). Since the tubular shaft (12) rotates in conjunction with the rotating output shaft (14), the O-ring (17, 18) that seals therebetween does not degrade in sealing capability due to wear by sliding. The sealed rotational output unit can be used with high rotational accuracy by directly coupling to a hollow motor (2) without any joint.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: April 7, 2015
    Assignee: Harmonic Drive Systems Inc.
    Inventor: Manabu Kino
  • Patent number: 8987958
    Abstract: A waterproof motor stator structure includes a circuit board; a stator mounted on one face of the circuit board; a lower shell forming an open-topped annular recess for receiving the circuit board therein and having an central opening communicable with the annular recess; an upper shell fitted around an outer side of the stator; and a protective layer formed in the annular recess of the lower shell to encapsulate the circuit board and an open lower end of the upper shell, so that the lower shell and the upper shell are joined into an integral unit. With these arrangements, the stator located in between the lower and upper shells can be effectively protected against external moisture and salt spray with reduced time, labor and material costs while enabling extended service life a fan using same.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: March 24, 2015
    Assignee: Asia Vital Components Co., Ltd.
    Inventors: Wei-Cheng Chen, Ping-Chi Kuo, Chu-Hsien Chou, Shih-Chieh Lin
  • Publication number: 20150076947
    Abstract: An electrical machine has a machine housing, which encloses a machine interior, and a flange bearing shield formed with a shaft feedthrough for a machine shaft. A leakage space that communicates with at least one drain opening is provided in the region of the shaft feedthrough.
    Type: Application
    Filed: November 24, 2014
    Publication date: March 19, 2015
    Inventor: MICHAEL VEEH
  • Publication number: 20150069886
    Abstract: A motor structure is provided. The motor structure has: a motor; a circuit board including a driver circuit for controlling the motor; an upper shell; a base; a lower shell; an outlet, wherein wires of the circuit board is connected to the exterior of the motor structure through the outlet; a first tight chamber, formed by closing the upper shell and the base together, wherein the motor is disposed in the first tight chamber; and a second tight chamber, formed by closing the base and the lower shell together, wherein the circuit board is disposed in the second tight chamber.
    Type: Application
    Filed: May 15, 2014
    Publication date: March 12, 2015
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Chin-Chu HSU, Cheng-Chia HSIAO, Hsiu-Wei WU
  • Publication number: 20150048698
    Abstract: An apparatus includes a first component and a second component. The second component is located at a first position. The second component includes a first connection to the first component. The first position and the first connection are configured to stiffen an electric motor assembly.
    Type: Application
    Filed: August 13, 2013
    Publication date: February 19, 2015
    Inventors: Timothy E. Langlais, Matthew M. McConnell, Paco G. Flores
  • Patent number: 8957552
    Abstract: A can of a drive motor is provided for a pump assembly, wherein the can (22) is manufactured at least partly of plastic (52). At least in a part of the can (22) the plastic (52) is reinforced by individual fibers (32) distributed in the plastic (52). The fibers (32) in at least one layer (35) of the can (32) are aligned in a defined manner in the peripheral direction with respect to the longitudinal axis (Z) of the can (22). A method for manufacturing such a can is also provided.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: February 17, 2015
    Assignee: Grundfos Management a/s
    Inventors: Jørn Toftegaard Hansen, Tom Eklundh Larsen, Finn Mathiesen HøJ
  • Patent number: 8946948
    Abstract: A motor includes a cover made of a resin material. The cover includes a first annular portion arranged to extend in an annular shape above coils, a side wall portion arranged to extend downward from an outer circumferential portion of the first annular portion, and a second annular portion arranged to extend radially outward or radially inward from a lower end portion of the side wall portion along an upper surface of a circuit board. The side wall portion is arranged to extend in an axial direction while filling in gaps between teeth on a radially inner side of radially outer end surfaces of the teeth. The coils are covered by the cover to be protected from dust, water droplets, etc. The radially outer end surfaces of the teeth are exposed from the cover, and are thus arranged to be in radial proximity to a rotor magnet.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: February 3, 2015
    Assignee: Nidec Corporation
    Inventors: Masaki Adachi, Yoshiaki Oguma, Yasuyuki Kaji
  • Publication number: 20140339939
    Abstract: An electric motor having a housing with a housing interior and also with an electronics compartment for a motor electronics system is provided. The housing has a housing base and a housing wall. The electronics compartment is arranged between the housing wall and a housing cover. The housing cover has a ventilation opening for venting the housing interior. The electronics compartment has a ventilation channel which is routed into the housing interior via the housing wall and has a channel connection piece which issues into the ventilation opening of the housing cover and is closed by an air-permeable diaphragm.
    Type: Application
    Filed: October 31, 2013
    Publication date: November 20, 2014
    Applicant: Brose Fahrzeugteile GmbH & Co. KG Wuerzburg
    Inventors: Richard ILLINGWORTH, Milenko STAMENIC, William BREHMER, Marco BATZNER
  • Publication number: 20140339938
    Abstract: Embodiments of a gas turbine engine actuation system are provided, as are embodiments of a high temperature actuator and methods for the manufacture thereof. In one embodiment, the gas turbine engine actuation system includes an actuated gas turbine engine component and a high temperature actuator, which has a rotor mechanically linked to the actuated gas turbine engine component and a stator surrounding at least a portion of the rotor. The stator includes, in turn, a coil support structure having a plurality of spokes extending radially therefrom. A plurality of pre-formed electromagnetic coils is circumferentially distributed about the coil support structure. Each of the plurality of pre-formed electromagnetic coils is inserted over at least one of the plurality of spokes in a radial direction. The stator further includes an inorganic dielectric material in which each of the plurality of pre-formed electromagnetic coils is at least partially embedded.
    Type: Application
    Filed: March 13, 2013
    Publication date: November 20, 2014
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventor: HONEYWELL INTERNATIONAL INC.
  • Patent number: 8860269
    Abstract: The present invention relates to a watertight apparatus for an underwater motor, comprising a double oil jacket for preventing high-pressure water from entering the underwater motor along a rotary shaft of the underwater motor. According to the present invention, high-pressure water is prevented from entering the underwater motor along the rotary shaft of the underwater motor even in the case of mechanical devices which operate in deep water, thereby preventing failure in the operation of or damage to mechanical devices caused by the ingress of water. In addition, the oil jacket can be easily replaced, thereby enabling the effective performance of maintenance and repair of mechanical devices.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: October 14, 2014
    Assignee: Korea Maritime University R&DB Foundation
    Inventors: Hyeung-sik Choi, Han-il Park
  • Publication number: 20140292127
    Abstract: Spark suppression shield for electric motors relates to universal commutator motors and to permanent magnet DC motors operating in environment containing flammable or explosive gases. The collar shaped as a wall is extending from bearing frame and surrounding commutator in approximately it's total height, where the gap in radial direction between commutator and collar is up to 3 mm and the collar might or might not have collar openings.
    Type: Application
    Filed: March 31, 2014
    Publication date: October 2, 2014
    Applicant: NELA razvojni center d.o.o.
    Inventors: Simon Zgaga, Igor Markic, Martin Arnolj, Matjaz Cemazar
  • Publication number: 20140265682
    Abstract: An enclosure system includes a stator enclosure defining an enclosure opening, and an adapter having a first entry port, and defines a center cavity having a first volume. Enclosure system includes a conduit enclosure coupled to one or more of stator enclosure and adapter. Conduit enclosure includes a base member having at least one side wall, a rear wall coupled to side wall and defining a second entry port, an interior cavity, and a terminal connection block coupled to base member and having at least one terminal. Enclosure system includes at least one electrical lead extending from the stator enclosure through first enclosure opening, through first entry port, through center cavity, through second entry port, and into the interior cavity. Electrical lead occupies a portion of first volume and leaves a remaining volume. Enclosure system includes sealing compound coupled with adapter such that substantially all of remaining volume is occupied.
    Type: Application
    Filed: April 9, 2013
    Publication date: September 18, 2014
    Applicant: General Electric Company
    Inventor: General Electric Company
  • Publication number: 20140271280
    Abstract: An electric pump motor is provided. The motor includes a stator assembly including a magnetic stator component and an overmolded stator casing sealingly encapsulating the magnetic stator component. A rotor assembly that is rotatable about an axis includes a rotor shaft extending along the axis, a magnetic rotor component, and an overmolded rotor casing fixedly interconnecting the rotor shaft and magnetic rotor component. The rotor shaft is connected to an impeller that imparts a thrust load on the rotor shaft. The rotor and stator assemblies are configured so that the magnetic components induce a solenoid force on the rotor shaft opposite the thrust load.
    Type: Application
    Filed: March 17, 2014
    Publication date: September 18, 2014
    Applicant: MERKLE-KORFF INDUSTRIES, INC.
    Inventors: Bruce Ley, Justin Mumaw, Justin Anteau
  • Publication number: 20140265681
    Abstract: An enclosure system for isolating a conduit enclosure for an explosion proof motor is provided. The enclosure system includes a stator enclosure defining a first enclosure opening. The enclosure system also includes a conduit enclosure coupled to the stator enclosure. The conduit enclosure comprises at least one side wall, a rear wall coupled to the side wall, and an interior cavity. The rear wall defines a first entry port having a first volume. The enclosure system further includes at least one electrical lead. The at least one electrical lead extends through the first enclosure opening, through the first entry port, and into the interior cavity. The at least one electrical lead occupies a portion of the first volume and leaves a remaining volume. The enclosure system also includes sealing compound. The sealing compound is coupled with the first entry port such that substantially all of the remaining volume is occupied.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Praveen Kumar Garlapati, Sachin Vitthal Mahajan, Sasidharan Nair
  • Publication number: 20140255224
    Abstract: An electric machine includes an end frame having a shaft bore extending therethrough. The end frame includes a first side and a second side. A shaft extends through the shaft bore. A bearing is supported by the end frame and is coupled to the shaft to support the shaft for rotation about a longitudinal axis. A first seal is fixedly attached to the end frame and includes an internal bore that is sized to cooperate with the shaft to form a seal point therebetween. The first seal is disposed on the first side of the end frame. A second seal is fixedly attached to the second side of the end frame. The second seal includes a movable portion in direct contact with the shaft to define a second seal point. The first seal point is on a first side of the bearing and the second seal point is on a second side of the bearing.
    Type: Application
    Filed: March 8, 2013
    Publication date: September 11, 2014
    Applicant: Regal Beloit America, Inc.
    Inventor: Joseph S. Minogue
  • Publication number: 20140250621
    Abstract: A windshield wiper assembly for a vehicle includes a wiper motor having a casing and an output shaft, a crank arm coupled to the output shaft, and a link cover attached to the casing of the wiper motor by a clasp. The link cover shields the assembly from fluid, such as rain water, melting snow, washing fluid, and the like, and is easily attached to the wiper motor via the clasp without the need for specialized tools or the like.
    Type: Application
    Filed: March 8, 2013
    Publication date: September 11, 2014
    Applicant: MITSUBA CORPORATION
    Inventors: Tetsuya TAJIMA, Takamichi IIZUKA
  • Publication number: 20140252898
    Abstract: A housing for receiving an electronic circuit (4) having a plurality of components (5) having a carrier plate (7) and a housing cover (8) including a circumferentially enclosing wall (9) on the carrier plate (7) and a cover part (10) on the wall (9), which cover part (10) lies opposite the carrier plate (7). A volume compensation element (11) is attached on the carrier plate (7) in an interior (12) of the housing cover (8) which is enclosed in a pressure-tight manner from an external atmosphere. The volume compensation element (11) is elastically formed providing a variable volume for compensation of pressure fluctuations in the interior (12), which variable volume occurs with a change in position of the volume compensation element (11) relative to the carrier plate (7). A gap between the volume compensation element (11) and the carrier plate (7) is connected to the external atmosphere.
    Type: Application
    Filed: October 29, 2012
    Publication date: September 11, 2014
    Applicant: ebm-papst Mulfingen GmbH
    Inventors: Thomas Sauer, Dieter Best, Walter Matter, Joachim Berberich
  • Publication number: 20140233133
    Abstract: There is provided a spindle motor including a base member formed by firing processing a steel plate and provided with a cylindrical installation part, a shaft support part including a sleeve insertedly disposed in the installation part, a shaft rotatably supported by the shaft support part, a rotor hub fixed to an upper end of the shaft and provided with a driving magnet, and a stator core installation member disposed on the base member so as to be disposed outwardly of the installation part in a radial direction and having a stator core, wherein the stator core installation member includes a body part, an installation wall part extending from an upper surface of the body part and a support part, and the rotor hub is provided with an extending wall extending from a bottom surface thereof to form a labyrinth seal with the installation wall part.
    Type: Application
    Filed: April 19, 2013
    Publication date: August 21, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Il Geun JEON, Tae Young Choi
  • 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
  • Publication number: 20140175923
    Abstract: A waterproof motor stator structure includes a circuit board; a stator mounted on one face of the circuit board; a lower shell forming an open-topped annular recess for receiving the circuit board therein and having an central opening communicable with the annular recess; an upper shell fitted around an outer side of the stator; and a protective layer formed in the annular recess of the lower shell to encapsulate the circuit board and an open lower end of the upper shell, so that the lower shell and the upper shell are joined into an integral unit. With these arrangements, the stator located in between the lower and upper shells can be effectively protected against external moisture and salt spray with reduced time, labor and material costs while enabling extended service life a fan using same.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 26, 2014
    Applicant: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Wei-Cheng Chen, Ping-Chi Kuo, Chu-Hsien Chou, Shih-Chieh Lin
  • Patent number: 8753077
    Abstract: A slinger shield structure is provided and includes a first annular disc, having a body, opposing faces defining an aperture extending through the body and through-holes extending through the body, which are arrayed around the aperture, a second annular disc having a body and opposing faces defining an aperture extending through the body, a hub for connection with the first and second annular discs at the respective apertures and radial vanes suspended between the first and second annular discs at a distance from the hub to define radial channels between adjacent radial vanes and drainage channels between the radial vanes and the hub.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: June 17, 2014
    Assignee: General Electric Company
    Inventors: Sanjay Gupta, Subbiah Natarajan, Bansidhar Jagannath Phansalkar
  • Patent number: 8742637
    Abstract: A waterproof and salt spray-resistant fan motor structure includes a base, a stator assembly, a case, and at least one circuit board. The base has a bearing cup vertically projected from one side thereof. The stator assembly is externally fitted around the bearing cup, and includes a plurality of silicon steel plates having windings mounted thereon. The case is arranged between the base and the stator assembly and internally defines a closed space, and the circuit board is located in the closed space. With these arrangements, the case protects the circuit board against corrosion by water and salt spray, enabling a fan to have largely extended service life.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: June 3, 2014
    Assignee: Asia Vital Components Co., Ltd.
    Inventor: Wen-Hao Liu
  • Publication number: 20140125173
    Abstract: The rotating electric machine has a motor case, a stator, a winding wire, a wire extension, a rotor, a shaft, a first plate, a second plate, a control unit, and a tubular bush. The first plate seals a first end of the motor case and supports a first end of the shaft. The second plate seals a second end of the motor case, supports a second end of the shaft, and has a through-hole. The control unit is positioned on an opposite side of the second plate that is opposite to the motor case. The control unit is connected with the wire extension to control electricity supplied to the winding wire. The tubular bush is disposed inside the through-hole, or is disposed outside the through-hole between the winging wire and the second plate.
    Type: Application
    Filed: November 5, 2013
    Publication date: May 8, 2014
    Applicant: DENSO CORPORATION
    Inventor: Jirou HAYASHI
  • Publication number: 20140111040
    Abstract: A brushed rotatory device (10) includes a stator, a rotor (14), an impeller (70), and a chamber (48) accommodating the commutator (16) and brushes (52) to contain debris from consumed brushes. The impeller causes air flow to dissipate heat generated by the rotatory device and may further carry the consumed brush debris away. The rotatory device includes flow channel(s) (72) which communicates with the impeller exhaust and accommodates absorbent or filtering materials (88) to trap the debris in the air flow. The commutation area may be double contained by using flange(s) (202) or wall(s) (42) to trap or confine a greater part of the debris in a localized region or to reduce noise from the rotatory device operations.
    Type: Application
    Filed: October 24, 2013
    Publication date: April 24, 2014
    Applicant: JOHNSON ELECTRIC S.A.
    Inventors: Awade BADAFEM, Min LI
  • Publication number: 20140112807
    Abstract: A motor protection structure includes a stator assembly, a casing and a filling material. The stator assembly is coated with a coating and fitted on one side of the casing. The casing has a receiving space for receiving a circuit board. The filling material is filled in the receiving space to enclose the circuit board. The filling material is connected to the coating to fully seal the stator assembly and the casing so as to lower manufacturing cost and shorten working time.
    Type: Application
    Filed: October 23, 2012
    Publication date: April 24, 2014
    Applicant: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Wei-Cheng Chen, Ping-Chi Kuo, Chu-Hsien Chou, Shih-Chieh Lin
  • Patent number: 8692428
    Abstract: A linear actuator having an output shaft with a long moving distance is provided. A linear actuator includes a rotary shaft, a motor portion having a rotor and a stator, a ball screw mechanism including a ball screw nut fixed to a first end of the rotary shaft and a ball screw, a casing assembly including a first end bracket and a second end bracket, an electromagnetic brake device including a rotary brake disc, a stationary brake disc, and an electromagnetic coil, and a brake cover for covering the electromagnetic brake device. The electromagnetic brake device has a hollow structure allowing a second end of the rotary shaft to pass therethrough.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: April 8, 2014
    Assignee: Sanyo Denki Co., Ltd.
    Inventors: Shigenori Miyairi, Koji Nakatake