Vertically Disposed Patents (Class 310/157)
  • Patent number: 11293517
    Abstract: A flywheel assembly 10 comprises at least one flywheel mass support 14 that has a shaft 19 that extends along a rotational axis 18 about which the support 14 can rotate in use and a flywheel mass 12. The support 14 comprises a plurality of openings 24 that are each offset from the rotational axis 18. The flywheel mass 12 comprises a plurality of openings 16 that are each arranged to align with a corresponding opening in the support. The flywheel mass 12 is coupled to the support 14 so that the mass 12 can rotate with the support 14 in use. The flywheel mass 12 comprises a plurality of generally planar flywheel mass elements sandwiched together to form a stack of elements by fixing elements 23 that extend through the aligned openings in the mass elements and the support 14.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: April 5, 2022
    Assignee: City, University of London
    Inventor: Keith Robert Pullen
  • Patent number: 11274717
    Abstract: A brake rotor assembly includes a rotor member and a cooling member. The rotor member has a first exterior surface and a second exterior surface. The cooling member is coupled to at least one of the first and second exterior surfaces of the rotor member.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: March 15, 2022
    Assignee: Shimano Inc.
    Inventor: Kazuki Koshiyama
  • Patent number: 10675104
    Abstract: A surgical assembly includes an electromechanical instrument and an instrument drive unit. The electromechanical instrument includes a housing portion and a shaft. The instrument drive unit includes an outer shell, an inner hub, a first motor, and a second motor. The outer shell is configured to be selectively coupled to a robotic arm. The inner hub is rotatably disposed within the outer shell and configured to be non-rotatably coupled to the housing portion of the electromechanical instrument. The second motor is disposed within the outer shell and includes an outer stator fixedly coupled to the outer shell, and an inner rotor rotatably disposed within the outer stator. The inner rotor has an inner surface that defines a longitudinal channel having the inner hub non-rotatably disposed therein. Actuation of the second motor rotates the inner hub to effect rotation of the electromechanical instrument along a longitudinal axis thereof.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: June 9, 2020
    Assignee: Covidien LP
    Inventor: Jaimeen Kapadia
  • Patent number: 10670137
    Abstract: An oil cooling system for a motorized pump is described. The motorized pump includes an oil sump and oil flow path, the oil sump and oil flow path containing oil to lubricate and remove heat from a bearing assembly and drive shaft. A motor coupling housing attached to a bearing box holding the bearing assembly includes an interior space that houses an oil cooling system. The oil cooling system includes a finned cooling tube connected to an outlet of an oil flow path in the bearing box. A fan is connected to the drive shaft of the motorized pump, and is situated to force air over the cooling tube and plurality of fins such that hot oil received by the cooling system is cooled and the cooled oil is returned to the oil flow path in the bearing box.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: June 2, 2020
    Assignee: Sundyne, LLC
    Inventors: Brian R. Allbritten, Christopher L. Linrud
  • Patent number: 10560001
    Abstract: The present invention is directed to a cooling tower that has a cooling tower structure having fill material supported by the cooling tower structure and configured to receive heated process fluid and a motor mounted to the cooling tower structure. The motor has a casing and a rotatable shaft and is sealed to prevent fluids, moisture, foreign particles and contaminants from entering the casing. A fan is connected to the rotatable shaft of the motor. Rotation of the rotatable shaft rotates the fan thereby inducing an upward moving mass flow of cool air through the fill material. A basin is attached to the cooling tower structure for collecting cooled fluid. A fluid distribution system distributes the cooled fluid in the basin.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: February 11, 2020
    Assignee: Prime Datum Development Company, LLC
    Inventors: Patrick M. Rollins, George Lucas
  • Patent number: 10404135
    Abstract: An electric motor is disclosed, comprising a stator and a rotor mounted relative to the stator to form a gap between a surface of the stator and a surface of the rotor, the gap having a width. One of the stator and the rotor is mounted for movement relative to the other of the stator and the rotor about a central axis, and one of the stator and the rotor is mounted for movement relative to the other of the stator and the rotor along the central axis in response to thermal expansion of at least one of the stator and the rotor to maintain the width of the gap.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: September 3, 2019
    Assignee: Indiana University Research and Technology Corporation
    Inventor: Matthew J. Rubin
  • Patent number: 9863476
    Abstract: The preferred embodiments of the present invention provide two advantageous features, which are especially beneficial in combination, but which can be advantageously and beneficially employed independently of one another: (1) firstly, a self-cooling motor bearing system; and (2) secondly, a self-lubricating motor bearing system. In the preferred embodiments, one or both of these two advantageous features are integrated inside an electric motor (e.g., within the electric motor's enclosure housing) in such a manner as to greatly enhance bearing operating conditions (e.g., maintaining adequate bearing lubrication and/or bearing operating temperature) without the use of external lubrication units and/or external cooling units.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 9, 2018
    Inventors: James W. Gray, Chetan Channapatana, Sergio Hernandez
  • Patent number: 9803691
    Abstract: A rotating electrical machine includes an outer housing; a drive shaft rotatably mounted within the outer housing; a bearing supporting the drive shaft relative to the outer housing, wherein the outer housing includes a support surface confronting the bearing and the bearing includes a bearing surface confronting the support surface, and further wherein a region defined between the support surface and the bearing surface has a lubrication layer; and a lubrication flow path configured to direct a lubricant to the bearing, wherein the lubrication flow path is in fluid communication with the region between the support surface and the bearing surface so as to replenish the lubrication layer. A method of lubricating a bearing for a rotating electrical machine is also disclosed. The rotating electrical machine may be a generator for a wind turbine.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: October 31, 2017
    Assignee: Vestas Wind Systems A/S
    Inventor: Peter Mongeau
  • Patent number: 9752583
    Abstract: Appliances, such as dishwasher appliances, and pump assemblies for appliances are provided. A pump assembly includes a conduit, the conduit including a casing extending between an inlet and an outlet and defining an inner passage between the inlet and the outlet. The pump assembly further includes an impeller disposed within the inner passage, and a motor connected to the impeller and operable to rotate the impeller, the motor disposed within the inner passage. Fluid flowing within the inner passage is flowable past the motor.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: September 5, 2017
    Inventor: Hanping Xu
  • Patent number: 8978242
    Abstract: A connector device includes a pair of connectors and a lever jig. The lever jig includes: an opening/closing door configured to be displaced between an open position where the opening/closing door allows a connector to be attached to the lever jig and a close position where the opening/closing door prevents the connector positioned at an attachment position from being detached from the lever jig; a door holding portion configured to hold the opening/closing door at the close position; and an automatic door opening portion configured to move the opening/closing door at the close position to the open position against a holding force of the door holding portion at a point in time when a manipulation from a fitting manipulation start position to a fitting manipulation completion position is completed.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: March 17, 2015
    Assignee: Yazaki Corporation
    Inventors: Hiroshi Aoki, Osamu Oshita, Akihiro Tsuruta
  • Patent number: 8669682
    Abstract: A synchronous rotating electrical machine is disclosed, of the type including a stator (10) and a rotor (11). The rotor is of the flux concentration type and includes a plurality of alternate North and South poles formed from permanent magnets (PM). The magnets are housed in slots (E1) arranged in the magnetic body of the rotor. The rotor includes, for each permanent magnet, a magnetic circuit allowing the circulation of a defluxing magnetic flux. This magnetic circuit has a magnetic reluctance of the defluxing circuit (Rf) determined as a function of an internal magnetic reluctance of the magnet (Ra) such that the ratio (Rf/Ra) of the magnetic reluctance of the defluxing circuit on the internal magnetic reluctance of the magnet (Ra) is within a range of predetermined values guaranteeing the magnet against a risk of demagnetization. This range of predetermined values is from approximately 0.3 to approximately 3 depending on the type of magnet.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: March 11, 2014
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Jean-Claude Matt, Jérome Legranger
  • Patent number: 8575800
    Abstract: An electric motor includes an upper housing, a lower housing including a flange for mounting the upper housing thereon and a cone-shaped portion extending away from the flange and the upper housing. The electric motor further includes a stator assembly formed of a first core having a first height and fitted into the upper housing, a rotor assembly rigidly joined to a shaft to rotate therewith within the stator assembly and formed of a second core having a second height, and a hub connected to a lower end of the shaft to rotate therewith in relation to the cone-shaped portion. The hub is configured to secure an operable implement to the electric motor. The second height is greater than the first height.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: November 5, 2013
    Assignee: Hydro-Gear Limited Partnership
    Inventors: Ivan E. Fox, Christopher K. Wyatt, Jim Hendershot
  • Patent number: 8053940
    Abstract: A magnetic motor generator that produces electric power by rotating a one piece magnetic floating flywheel assembly that is operated by a linear induction motor and repelled upward by a stationary natural magnet. The floating flywheel assembly magnetic axel rotates inside magnetic collar bearings, which have repelling stationary magnets to center the axel at speed. The floating flywheel assembly rotors move inside generator stators to generate electric power. The floating flywheel assembly has no physical contact with other components to prevent bearing losses at speed. A timing computer controls the operation of the linear induction motor, assesses the speed of the floating flywheel assembly and fires only when necessary to maintain rotation. The moving components are enclosed in a vacuum chamber to prevent wind resistance, or windage losses at speed. Surplus electric power can ether be stored/used by the system or used to supply a load.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: November 8, 2011
    Inventor: Michael Marion McCulley
  • Patent number: 7960881
    Abstract: An electric motor comprises a stator, a rotor, and an interface plate. The interface plate is fixed to the stator and is configured to couple the electric motor to a pump. The interface plate comprises a shaft opening, a cavity, a ventilation passageway, a fluid discharge portion, a drainage passageway, and an upwardly extending surface. The rotor shaft extends horizontally through the shaft opening. The cavity is in communication with the shaft opening. The ventilation passageway extends upward from the cavity and is in communication with the cavity and with the ambient air. The drainage passageway is in communication with and extends downward from the cavity. The drainage passageway is configured to channel liquid downward from the cavity and to the fluid discharge portion. The upwardly extending surface is positioned where the upwardly extending surface will inhibit liquid from migrating from the fluid discharge portion to the stator.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: June 14, 2011
    Assignee: Nidec Motor Corporation
    Inventor: Stephen J. Burton
  • Publication number: 20090022571
    Abstract: A substrate transport apparatus including a peripheral wall having an inner surface that defines a substrate transport chamber capable of holding an isolated atmosphere, at least one substantially ring shaped motor having at least one stator module located within the peripheral wall, between the inner surface and an adjacent outer surface of the peripheral wall and at least one rotor suspended substantially without contact within the transport chamber such that a surface of the peripheral wall encompassed by the ring shaped motor is configured for attachment thereto of a predetermined device and at least one substrate transport arm connected to the at least one rotor and having at least one end effector configured to hold at least one substrate.
    Type: Application
    Filed: July 17, 2008
    Publication date: January 22, 2009
    Applicant: Brooks Automation, Inc.
    Inventors: Alexander G. Krupyshev, Christopher Hofmeister
  • Patent number: 6942390
    Abstract: A bearing arrangement for the rotor (11) of a rotating machine, in particular of a hydrogenerator (20) rotating about a vertical axis (19), comprises a combined axial and radial bearing (23) which is accommodated in a bearing body (24), on which supporting arms (27) are arranged for absorbing axial forces. The supporting arms (27) are supported with the free ends on a load-bearing base. Tangentially oriented connecting elements (29) are additionally provided between the bearing body (24) and a foundation (21), enclosing the rotor, for absorbing radial forces and for centering the bearing, which connecting elements (29) are fastened at a first end to the foundation (21) and are fastened at a second end to articulation points (31) arranged directly on the bearing body (24). This results in a material-saving construction, optimization of the individual bearing functions, and improved adjustability.
    Type: Grant
    Filed: February 1, 2002
    Date of Patent: September 13, 2005
    Assignee: ALSTOM Technology Ltd.
    Inventors: Axel Guenter Albert Fuerst, Kamil Matyscak
  • Patent number: 6638019
    Abstract: A ceiling fan has a stator 38 rigidly mounted to a shaft 33 and a rotor 40 rotatably mounted to the same shaft about the stator. The shaft is rigidly mounted to a housing. The rotor is supported upon a thrust bearing.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: October 28, 2003
    Assignee: Hunter Fan Company
    Inventor: Vinay Mehta
  • Patent number: 6376949
    Abstract: An interface for mating a vertically oriented electric motor underneath a gearbox or other motor driven, fluid containing apparatus which substantially isolates the motor rotor and driven shaft from the external environment while facilitating the removal of leaking oil or other fluid from the area between the motor endshield and gearbox housing to the to the outside of the apparatus in order to prevent accidental oil penetration into the motor housing, the invented interface having a base plate component and a flinger component, wherein the flinger projects escaping oil away from the rotor shaft of the attached electric motor, which oil then drains through exit ports to the outside of the invented interface, such interface being connectable between electric motors and motor driven equipment through use of standardized C-face connection means.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: April 23, 2002
    Inventor: Richard R. Hayslett
  • Patent number: 6174149
    Abstract: A counterweight is attached to a rotating shaft by a slip fit, combined with two axially abutting surfaces to hold the counterweight. The counterweight is preferably held at one face by a ledge formed on the shaft, and at the opposed face by a portion of the motor rotor. Circumferentially spaced abutting surfaces also hold the counterweight to cause the counterweight to rotate with the rotor. The present invention eliminates the need for separately attaching the counterweight to the shaft, and thus reduces both the complexity of assembly, and also the need for precise manufacturing tolerances for the counterweight.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: January 16, 2001
    Assignee: Scroll Technologies
    Inventor: James W. Bush
  • Patent number: 6129176
    Abstract: A hydraulic pump-motor having an end shield which deadens the sound generated by the pump-motor do thereby result in a quieter unit. The present invention provides a conventional hydraulic pump-motor having an electric motor coupled to a pumping mechanism wherein the motor includes an improved sound attenuating end shield design. Through the use of acoustically deadening materials such as cast iron and polypropylene plastic, the end plates of the present invention deaden the sounds stemming from the vibration of the pump-motor. In addition, the present invention provides an end shield design which allows the stator to be secured to the motor housing and the air gap between the rotor and the stator to be precisely measured prior to the installation of the end shield. The present invention therefore results in not only a quieter pump-motor but also a pump-motor with higher machining tolerances, improved efficiency, and lower production and maintenance costs.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: October 10, 2000
    Assignee: Suntec Industries, Inc.
    Inventors: Dale Hunsberger, Julie Harwath, Frank Harwath
  • Patent number: 6097129
    Abstract: An electronically commutated external rotor motor has an external rotor having a cup-shaped housing and a radially magnetized permanent magnet connected in the cup-shaped housing. An interior stator is positioned in the cup-shaped housing. The interior stator has a laminated core having grooves. Windings are provided within the grooves. The windings have first end turns proximal to a bottom of the cup-shaped housing and second end turns positioned distal to the bottom. The first and second end turns electrically connect the windings to one another. The permanent magnet has an end face remote from the bottom of the cup-shaped housing. At least one galvano-magnetic rotor position sensor is arranged opposite the end face of the permanent magnet so as to be located within a magnetic leakage of the permanent magnet and within a magnetic leakage of the interior stator. The at least one rotor position sensor is designed to control current within at least a portion of the windings.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: August 1, 2000
    Assignee: Papst-Motoren GmbH & Co. KG
    Inventors: Patrick Furtwangler, Hermann Rappenecker, Harald Reich, Gabor Szondi
  • Patent number: 6031304
    Abstract: A motor structure including a rotor 1 having a permanent magnet 10 where north poles and south poles are alternately disposed in a moving direction of the rotor, a stator 5a including at least two stator yokes having stator pole teeth 3a, 4a respectively which face to the permanent magnet at a distance and are respectively positioned side by side in the moving direction to bear north poles or south poles respectively due to an electric current flowing through a coil 2a to thereby form at least one phase, wherein the stator pole teeth 3a, 4a are different from each other with respect to an effective area through which magnetic flux passes, whereby high harmonic wave phases generated from the pole teeth 3a, 4a are different from each other by 180 degrees in electric angle to thereby be canceled mutually, therefore an induced electromotive force wave containing hardly high harmonic wave is obtained to thereby reduce a motor vibration.
    Type: Grant
    Filed: January 16, 1998
    Date of Patent: February 29, 2000
    Assignee: Minebea Co. Ltd
    Inventors: Yuzuru Suzuki, Sakae Fujitani, Haruyoshi Hino, Hideki Sakiyama
  • Patent number: 6011337
    Abstract: A double-sided, non-iron core, brushless, axial magnetic field permanent-magnet type DC motor includes a shaft, two electromagnet units parallelly mounted on the shaft, and a permanent magnet unit mounted on the shaft between the electromagnet units and having its direction of magnetization disposed in parallel to the shaft. The permanent magnet unit is allowed to rotate relatively around the electromagnet units by being forced by magnetic repulsion force from both sides. Electromagnetic areas at the electromagnet units are arranged in a staggered manner, enabling permanent steel magnets at the permanent magnet unit to be alternatively fully induced from its two opposite sides to provide a high torsion output. The electromagnetic areas of the two electromagnet units are caused to change the phase alternatively at a phase difference, so that vibration and dead section problems are eliminated during the operation of the DC motor.
    Type: Grant
    Filed: October 20, 1998
    Date of Patent: January 4, 2000
    Inventors: Shou-Mei Lin, Yu-Yen Wang
  • Patent number: 5965999
    Abstract: A vertical generator assembly includes an engine having an engine housing and a vertical drive shaft extending downwardly from the engine housing. A support frame is attached to the bottom of the engine housing, and a stator is attached to the bottom of the support frame. A rotor is mounted within the stator and is attached to the drive shaft. A generator housing is attached to the support frame and encloses the stator and rotor.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: October 12, 1999
    Assignee: Coleman Powermate, Inc.
    Inventor: Kenneth M. Frank
  • Patent number: 5920137
    Abstract: A brushless motor for driving a washing machine includes a stator fixed to a frame and having a shaft holder with a hollow portion and a yoke wound by a coil; a rotor having a shaft rotatably supported within the hollow portion of the shaft holder; and a flange having a passing hole connected to an upper portion of the shaft holder. The shaft protrudes from the upper portion of the shaft holder and includes a stepped portion having a diameter larger than that of the passing hole.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: July 6, 1999
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Bu-hyun Sung, Min-soo Lee
  • Patent number: 5912515
    Abstract: A motor with reduced radial forces includes a first motor part made up of 2P permanent magnet poles surrounding a second motor part formed by a magnetic yoke having a number T of pole teeth and with an air gap between the first and second motor parts. The first and second motor parts are moveable relative to one another. Exciter coils are mounted on the pole teeth and the pole teeth are separated by pole gaps. For a motor with a number 2P magnet poles and a number T of pole teeth which do not have a common submultiple greater than 1, each of the pole teeth have a centrally located auxiliary slot facing the air gap thereby to reduce undesirable radial forces.
    Type: Grant
    Filed: July 21, 1997
    Date of Patent: June 15, 1999
    Assignee: U.S. Philips Corporation
    Inventors: Bernd Ackermann, Leo Honds, Johan C. Compter, Pingh-Shih Wang
  • Patent number: 5757094
    Abstract: A method of improving the airflow through a low to medium speed salient pole dynamoelectric machine DEM is disclosed. The rotor rim on which the salient poles are mounted is shortened in comparison to prior art structures so that the ends of the salient poles (and the rotor windings) protrude a substantial distance beyond the edge of the rim. A stationary or rotating shield is placed in juxtaposed relationship with the rotating ends of the salient poles to provide an enclosure so that the protruding ends of the salient poles can function as a crude radial fan.
    Type: Grant
    Filed: March 28, 1997
    Date of Patent: May 26, 1998
    Assignee: General Electric Canada Inc.
    Inventor: Martin van Duyn
  • Patent number: 5604390
    Abstract: An electric motor with permanent-magnet excitation, particularly an internal-rotor or external-rotor motor, having motor parts which are movable relative to one another. One motor part forms a multi-pole excitation field in an air gap by means of permanent magnets and the other motor part comprises a coil configuration situated in the air gap. The coil configuration is free of soft-magnetic material. The permanent-magnetically excited motor part includes a cylindrical yoke having substantially radial slots which are uniformly spaced about the circumference and in which the permanent magnets are mounted. The permanent magnets are magnetized in a circumferential direction with directions of magnetization which change from magnet to magnet.
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: February 18, 1997
    Assignee: U.S. Philips Corporation
    Inventor: Bernd Ackermann
  • Patent number: 5598047
    Abstract: A cylindrical shielding plate is provided on an inner circumference of the cylindrical recess formed on the bracket of an electric motor of a magnetic disk drive, and an open sector of the stator core is arranged to coincide with the moving direction of read/write head. Or a cylindrical boss is inserted between the stationary shaft and the stator core. Thereby, high frequency electromagnetic noise to the magnetic disk is drastically reduced.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: January 28, 1997
    Assignee: Matsushita Electric Industrial Co., Ltd,
    Inventors: Katsunori Sakuragi, Hideshi Fukutani
  • Patent number: 5396757
    Abstract: A directly motor-driven spindle assembly in a rotary shaft having one end supported on a bearing and the other end connected to a load a, driving apparatus fixed to the rotary shaft to rotate the rotary shaft, and control apparatus for controlling the movement of the rotary shaft toward the side of the load according to the movement of the rotary shaft from a predetermined position. The control apparatus prevents the jumping motion of the rotary shaft which occurs as the load increases to enable the directly motor-driven spindle assembly to operate at a high rotating speed without the jumping motion.
    Type: Grant
    Filed: August 6, 1992
    Date of Patent: March 14, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Hideaki Kobayashi, Takeshi Obata
  • Patent number: 5185544
    Abstract: A ventilation structure in a vertically mounted motor is able to avoid clogging from accumulated brush abrasion dust. A ventilation path adapted to provide ventilation between the interior and the exterior of the motor casing is formed from a communication hole defined in a bottom portion of the motor casing, extending between the exterior of the motor casing and a circular hole defined in the bottom portion of the motor casing; a communication groove defined in an annular rib, extending upwardly from the bottom portion of the motor casing to form a bearing seat and encircling the circular hole to bypass the bearing in the bearing seat; and a gap C defined between the annular rib and a cap member covering the bearing and annular rib.
    Type: Grant
    Filed: March 25, 1992
    Date of Patent: February 9, 1993
    Assignee: Mitsuba Electric Mfg. Co., Ltd.
    Inventor: Shigeru Takada
  • Patent number: 5128574
    Abstract: A brushless motor whose stator keeps hold of coils and is made of either magnetic-power-blended resin by molding techniques, or magnetic powder by sintering techniques.
    Type: Grant
    Filed: April 5, 1990
    Date of Patent: July 7, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shigeki Koizumi, Hiroshi Oka
  • Patent number: 5117140
    Abstract: An electromagnetic rotating machine having an annular stator and a rotor disposed within the stator, the stator including a frame and stator laminations secured to the frame and located radially inwardly of the frame, and the stator being mounted on a rigid foundation such that the rotor has a vertical axis of rotation, and stator shape stabilizing devices connected between the stator frame and the foundation at a plurality of spaced points around the stator frame for imposing outwardly directed radial forces on the frame at the spaced points in a manner to maintain a circular configuration for the frame.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: May 26, 1992
    Assignee: Westinghouse Electric Corp.
    Inventors: John B. Sargeant, Jan W. Seyler
  • Patent number: 5099781
    Abstract: A wafer spinning assembly for use in wafer processing includes a chuck for holding a wafer, a vertically oriented spindle connected to drive the chuck, and a spindle drive motor. The spindle drive motor includes an enclosed cylindrical housing which is enclosed on a top end with a top end cap having an outside surface impermeable to infiltration by wafer processing solutions. A drive shaft is mounted inside the housing for rotational movement and out an unsealed aperture in the top end cap. A motor mounted inside the housing provides electromotive rotational force to the shaft in response to electric power supplied to the motor through a plurality of brush assemblies. The top end cap includes a cylindrical collar portion extending outwardly from the outside surface, oriented generally horizontally, of the top end cap and around the shaft. The motor is deployed so that the shaft is actually aligned with the spindle.
    Type: Grant
    Filed: December 17, 1990
    Date of Patent: March 31, 1992
    Inventor: Craig D. Frank
  • Patent number: 5057730
    Abstract: A dynamic electric machine has a yoke, permanent magnets to be fixed to the inner surface of the yoke and a guide plate disposed in the yoke and capable of guiding tie bolts which are extended axially through the yoke. A structure for locating the permanent magnets includes locating tabs formed on the guide plate and capable of contacting end surfaces of the permanent magnets so as to correctly locate the permanent magnets with respect to the yoke. The locating tabs may have integral adhesive-stopper portions capable of receiving adhesive flowing down along the inner surface of the yoke during bonding of the permanent magnets to the yoke, thereby preventing the adhesive from reaching a bottom portion of the yoke.
    Type: Grant
    Filed: May 22, 1990
    Date of Patent: October 15, 1991
    Assignee: Mitsuba Electric Manufacturing Co., Ltd.
    Inventor: Yasushi Yoshida
  • Patent number: 5010265
    Abstract: A moisture drain bush for use in a moisture drain hole in an engine starter motor housing wall comprises a stem having a first and a second end and an axial length equal to a housing wall thickness and having an axial groove extending between the first and second ends of the stem. A first flange may be frustoconical shape so that its conical circumferential surface guide and assists smooth insertion of the flange into the drain hole, and has a flat inner surface radially extending from the first end of the stem and larger than the drain hole is provided. The first flange also has a first radial groove connected to one end of the axial groove in the stem and radially extending to the outer periphery of the first flange. A second flange having a flat inner surface radially extends from the second end of the stem and larger than the drain hole is provided.
    Type: Grant
    Filed: February 9, 1990
    Date of Patent: April 23, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takao Tanaka, Kazuhiro Odahara
  • Patent number: 4992690
    Abstract: An electric motor for use with a pump has a stator assembly and a rotor assembly. The rotor assembly includes a rotatable shaft and a rotor affixed to and rotatable with the shaft. The stator and rotor assemblies are intended for installation in an appliance. A cover forms an endshield for the motor, as well as a portion of the housing of a pump for the appliance. The cover is constructed so as to align the shaft extending into the pump with operable portions of the pump.
    Type: Grant
    Filed: October 7, 1988
    Date of Patent: February 12, 1991
    Assignee: Emerson Electric Co.
    Inventor: Gerald N. Baker
  • Patent number: 4926541
    Abstract: A method of assembling a wound rotor of a vertical type adjustable speed electric rotating machine at a power house of a hydroelectric power plant, with the method including a layer of a rotor body on its side into a pit in the power house with a top surface of an outer circumference of the rotor body extending from the pit to a height sufficient to facilitate a carrying out of field coiling assembling operations by working personnel from a foundation of the power house whereby it is possible to limit an increase in the height of the power house to a sum of an axial length of the assembled rotor body and a height of a crane lifting jig.
    Type: Grant
    Filed: August 10, 1989
    Date of Patent: May 22, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Shinsaku Hakuta, Yasuhiro Yasaka, Osamu Nagura, Eiji Tsuji, Makoto Suzuki, Hirotaka Akagawa
  • Patent number: 4900961
    Abstract: The shaft 1 of a capstan motor is vertically supported by a pair of relatively rotatable thrust rings 21, 22 disposed between an upper bearing 8 surrounding the shaft and the outwardly projecting flange of an E-ring 20 snapped into an annular groove 1a of the shaft.
    Type: Grant
    Filed: September 26, 1988
    Date of Patent: February 13, 1990
    Assignee: Kabushiki Kaisha Sankyo Seiki Seisakusho
    Inventors: Shinichi Kudo, Yoshito Hirata
  • Patent number: 4886991
    Abstract: A spinning or twisting element is provided with an integral asynchronous motor having a laminate stator and a laminate rotor fixed to the shaft of the element. The individual laminates of the stator and rotor are each less than 0.3 mm in thickness and the stator is provided with at least 24 slots.
    Type: Grant
    Filed: August 6, 1985
    Date of Patent: December 12, 1989
    Assignee: SKF Textilmaschinen-Komponenten GmbH
    Inventor: Ernst Braun
  • Patent number: 4885492
    Abstract: A rotary power module construction especially useful in computer room application. A motor-generator set consisting of an induction motor and synchronous generator is mounted vertically and a direct drive is provided between the components by an electrically insulating coupling. A flywheel is mounted on a shaft of the synchronous generator to provide a maximum ride through condition for short term power outages. A plurality of spider-like leg members envelop the flywheel providing retainment protection for the flywheel as well as providing a suitable support for the synchronous generator. The spider-like leg members are anchored to a plate member which is secured to a non-rotating part of the induction motor. The motor-generator set is encased within a housing that is serviced only from the front of the housing, thereby occupying a minimum amount of space in the computer room.
    Type: Grant
    Filed: December 14, 1988
    Date of Patent: December 5, 1989
    Assignee: United Power Corporation
    Inventor: Robert J. Van Sickle
  • Patent number: 4864838
    Abstract: To avoid impacts on the first pass of the rolled product through a universal rolling mill the vertical rolls of the rolling mill can be provided with their own integral drive according to our invention. In an electrical drive for a vertical roll the vertical roll is the rotor of an electric motor while the stator is a circular collar on a nonrotatable supporting axle for the vertical roll. In a hydraulic drive for a vertical roll a hydraulic motor is either located in a housing side extension of the structural member supporting the vertical roll to drive it from the outside by spur wheel gearing or by a frictional drive or the hydraulic motor is mounted in the nonrotating supporting axle of the vertical roll and engages on an inner cogged drive ring on the vertical roll from the inside by spur gearing positioned on a transverse plane.
    Type: Grant
    Filed: August 14, 1987
    Date of Patent: September 12, 1989
    Assignee: SMS Schloemann-Siemag Aktiengesellschaft
    Inventors: Georg Engel, Hans-Heinrich Hartmann, Peter Koethe, Alexandr Svagr, Bernd Onderka
  • Patent number: 4862581
    Abstract: A dynamoelectric machine, preferably a motor adapted for use in ceiling fan applications, has a conventional rotor assembly mounted within a bore of a stator assembly. A stationary shaft extends through the rotor assembly and provides both a cableway for electrically connecting the motor to a source of electrical energy and for permitting the attachment of additional apparatus on one end of the stationary shaft. A retainer is mounted on the stationary shaft and positions the rotor assembly with respect to the stator. The rotor assembly is attached to a hub which rotates with the rotor and provides means for attaching blades to the motor. The stator is press fit into an end shield and the resulting structure is a compact, light weight, efficient dynamoelectric machine. The end shield is provided with means for attaching a decorative enclosure about the motor, so that the asthetic appearance of the motor can be enhanced substantially.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: September 5, 1989
    Assignee: Emerson Electric Co.
    Inventor: Neal B. Royer
  • Patent number: 4862026
    Abstract: A motor having a stator and a rotor core rotatable therein and a rotor shaft secured for rotation with the rotor core comprising a motor housing, the stator supported by the motor housing, the rotor core having a counterbore extending partially along the axial length thereof and circumscribing a portion of the rotor shaft, the motor housing including a cylindrical unit bearing tower extending into the counterbore and surrounding the portion of the rotor shaft whereby the portion of the rotor shaft is free to rotate in a bore in the unit bearing tower.
    Type: Grant
    Filed: June 20, 1988
    Date of Patent: August 29, 1989
    Inventor: Richard Riback
  • Patent number: 4859887
    Abstract: A synchronous machine having a rotor with a plurality of salient poles which are supported by a rotor rim. The rotor rim is arranged by means of a hollow annular device in mechanical connection with a rotor hub, cooling gas flowing into the annular device relatively close to the hub and leaving at the rotor rim, flowing through cooling ducts in the rotor and stator, through a cooler and out into a cooling gas space which includes a plurality of guide vanes arranged so that the cooling gas on its way from the cooler to the hollow, annular device passes through the guide vanes and is thus put in rotation around the axis of rotation of the rotor.
    Type: Grant
    Filed: August 6, 1987
    Date of Patent: August 22, 1989
    Assignee: ASEA Aktiebolag
    Inventors: Tage Carlsson, Jan Sandberg
  • Patent number: 4831858
    Abstract: A driving apparatus for a vertical rolling mill comprises a vertical electric motor mounted on a frame which has a hollow rotary shaft therein supported by a bearing and surrounding a portion of an intermediate shaft. The upper end of the intermediate shaft extends through the hollow rotary shaft and connects to a first universal joint disposed axially above the motor, and which engages the upper end of the hollow rotary shaft. The torque of the hollow rotary shaft is transmitted to the vertical roll through the first universal joint of the intermediate shaft, and a second universal joint.
    Type: Grant
    Filed: December 10, 1987
    Date of Patent: May 23, 1989
    Assignees: FEC Co., Ltd., Fuji Electric Co., Ltd.
    Inventors: Isamu Yoshizawa, Ginjiro Yanai, Seiichi Matsuda
  • Patent number: 4822256
    Abstract: In a spherical pump, having a separation wall separating the wet part from the dry part of the pump, the column for the ball of the spherical bearing is made from the same material as the separation wall and is clamped in a cylindrical protrusion of the separation wall.
    Type: Grant
    Filed: June 9, 1986
    Date of Patent: April 18, 1989
    Inventor: Karsten Laing
  • Patent number: 4754182
    Abstract: A link suspension permitting limited rotation of a rotor in response to a magnetic control field uses a permanent magnet and support means having two contacting narrow concave curvilinear surfaces.
    Type: Grant
    Filed: September 28, 1982
    Date of Patent: June 28, 1988
    Inventor: Edward C. Streeter
  • Patent number: 4689512
    Abstract: An electric motor, e.g. for use in a hydraulic elevator, has a stator surrounding a rotor and a stator frame around the stator, to which frame end flanges of the motor are secured. The stator frame is formed by a metal sheet bent into the form of a trough, in which the stator is mounted.
    Type: Grant
    Filed: May 28, 1986
    Date of Patent: August 25, 1987
    Assignee: Elevator GmbH
    Inventor: Ismo Kuivamaki
  • Patent number: 4689511
    Abstract: An improved drain structure for a vertically mounted electric motor to be positioned below a liquid sump into which the rotor shaft of the motor can be connected including a drip pan through which the rotor shaft passes, the pan having peripheral side walls and drain means attached thereto and a liquid slinger above the pan adapted to sling liquid leakage in a radially outward direction below the pan side walls to be drained away from the motor.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: August 25, 1987
    Assignee: Emerson Electric Co.
    Inventors: Gerald N. Baker, Carl R. Fischer