Patents Examined by R. Skudy
  • Patent number: 5955809
    Abstract: An improvement in a generator having a rotor, a stator, a magnetic field structure disposed on one of the rotor and the stator and an armature winding disposed on the other end of the rotor and the stator wherein the armature winding is disposed in a useful flux path comprises an additional armature winding disposed in a leakage flux path wherein auxiliary power is developed by the additional armature winding for one or more electrical loads.
    Type: Grant
    Filed: August 11, 1994
    Date of Patent: September 21, 1999
    Assignee: Intellectual Property Law Department Sundstrand Corporation
    Inventor: Mahesh J. Shah
  • Patent number: 5625245
    Abstract: A thermoelectric generator for producing electric power for a motor vehicle from the heat of the exhaust gasses produced by the engine of the motor vehicle. The exhaust gasses pass through a finned heat transfer support structure which has seat positions on its outside surface for the positioning of thermoelectric modules. A good contact cylinder provides a framework from which a spring force can be applied to the thermoelectric modules to hold them in good contact on their seats on the surface of the heat transfer support structure.
    Type: Grant
    Filed: October 19, 1993
    Date of Patent: April 29, 1997
    Inventor: John C. Bass
  • Patent number: 5567999
    Abstract: A bobbin for use in an electric motor is formed in the nature of a clam shell, having two semi-cylindrical side portions which are joined together by a flexible hinge portion. Each of the side portions includes a plurality of smaller diameter regions which are separated from one another by larger diameter regions. When the two side portions of the bobbin are closed together by bending of the hinge portion, the smaller diameter regions cooperate to define respective cylindrical surfaces upon which coils of an electrical conductor can be wound. A pair of outwardly extending tabs can be formed on each of the larger diameter regions of the bobbin. When the two side portions of the bobbin are folded together, the two pairs of tab are disposed adjacent to one another. The upper and lower halves of the stator have respective pairs of recesses formed therein. The recesses are sized and positioned so as to receive the cooperating pairs of tabs therein.
    Type: Grant
    Filed: December 30, 1994
    Date of Patent: October 22, 1996
    Assignee: Dana Corporation
    Inventors: Richard A. Baronosky, Martin Kaplan, Peter Senak, Jr.
  • Patent number: 5563463
    Abstract: A permanent magnet rotor for an electronically commutated motor (ECM) has a core, a plurality of magnetizable elements spaced around the core, and a thin-walled retaining shell which has been stretched around the core and magnetizable elements to hold the elements in position. The rotor is made by an inventive method which involves axially aligning the core and surrounding magnetizable elements with the retaining shell, and cold-pressing the retaining shell over the core and elements to sandwich the elements between the shell and core. The core and magnetizable elements serve as a mandrel about which the shell is reformed in a cold working operation. Other aspects of the invention include the fixturing apparatus used to align the core and magnetizable elements with the retaining shell, and apparatus which is used to evenly space the magnetizable elements around the core and hold the elements in position during at least a portion of the cold-pressing operation.
    Type: Grant
    Filed: April 23, 1992
    Date of Patent: October 8, 1996
    Assignee: General Electric Company
    Inventor: William H. Stark
  • Patent number: 5563466
    Abstract: This invention incorporates micro-machining fabrication techniques to achieve practical electrostatic actuation forces over a length change of the order of 20 to 50 percent. It constitutes an improvement over the prior art by virtue of array designs which yield a more versatile and stronger actuator. One basic design utilizes diamond-shaped attractive elements to transmit transverse forces for longitudinal, two-way actuation. Another basic design features interlocking, longitudinally attractive elements to achieve longitudinal, two-way actuation. Other improvements include means for locking the actuator at an arbitrary displacement as well as means for amplification of either the actuation force or length change.
    Type: Grant
    Filed: June 7, 1993
    Date of Patent: October 8, 1996
    Inventors: Brian G. Rennex, Stephen M. Bobbio
  • Patent number: 5559380
    Abstract: An air-cooled motor having cooling-air passages each formed by a plurality of small ventilation passages extending through a front housing, a stator, and a rear housing, constructed in one piece. Cuttings are prevented from being accumulated at inlets of cooling-air passages. For example, the cooling-air passages are formed of ten small ventilation passages, each defined between adjacent ones of eleven ribs each forming part of the stator. All the eleven ribs are provided with respective front housing ribs. End faces of the front housing ribs on the cooling-air inlet side are uniform in height, and positioned in an identical plane. Cooling air flows into the small ventilation passages in the direction of an arrow.
    Type: Grant
    Filed: December 12, 1994
    Date of Patent: September 24, 1996
    Assignee: Fanuc Ltd.
    Inventors: Kosei Nakamura, Yukio Katsuzawa, Yoshinobu Maeda
  • Patent number: 5554902
    Abstract: A lightweight high power electromotive device and a method for making the same is provided.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: September 10, 1996
    Assignee: Libby Corporation
    Inventors: Norman J. Kessens, Douglas M. Bowen, James P. Ceule, Milton W. Rice
  • Patent number: 5554900
    Abstract: An electric motor including a permanent-magnet rotor having embedded magnets held in place by several segments. The embedded magnets are secured by segments including non-circular openings near their centers. Several non-magnetic, non-conductive bars extend through the non-circular openings of the segments to secure the segments in relation to the shaft. The motor is capable of producing high torque while only requiring a minimum amount of space.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: September 10, 1996
    Assignee: Schlenker Enterprises Ltd.
    Inventor: Stephen L. Pop, Sr.
  • Patent number: 5552650
    Abstract: A compact outer-rotor electric motor that can be used for directly driving a disk for recording and reproducing information has an axially deep, tank-form flange and a stationary shaft, upon which the mounting annulus of the flange and the ball bearings of the hub are axially displaced. The hub includes a cover disk for sealing an extremity of the ball bearings and an inverted cup shape rotor providing magnetic shielding. The flange includes a mounting rim substantially aligned with the back surface of the cup-shape rotor. The facing cup-like and tank-form shapes readily enable labyrinth seals, comprising seals of the lower bearings.
    Type: Grant
    Filed: February 25, 1994
    Date of Patent: September 3, 1996
    Assignee: Papst Licensing GmbH
    Inventors: Heinrich Cap, Dieter Elsaesser, Ulrich Koletzki, Georg Papst
  • Patent number: 5552653
    Abstract: In an electric motor, in order to simplify the structure and to remarkably improve the T/N characteristic value, yoke plates mounted on a field magnet are so shaped that the total magnetic flux of the field magnet is collectively extended to the iron core of the armature with its direction repeatedly reversed. That is, in the motor, the multi-polarization is substantially obtained by designing it in such a manner that the total magnetic flux of the field magnet is not dispersed but concentrated. Hence, in the motor, unlike a conventional motor, the field magnet is not subjected to multi-polar magnetization, and the armature side is simplified in structure, and the magnetic flux from the field magnet is maximaly utilized at all times, so that the number of magnetic poles and the effective flux .PHI. are both increased.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: September 3, 1996
    Assignee: Kabushiki Kaisha Sankyo Seiki Seisakusho
    Inventor: Tamotsu Nose
  • Patent number: 5552654
    Abstract: An electrostatic actuator includes a stationary element having a plurality of driving electrodes arranged in a predetermined direction and with predetermined spaces in an isolated state on an insulating supporter, a movable element, disposed in contact with the stationary element, electric wires connected to the driving electrodes of the stationary element, and a driving voltage control section to apply to the driving electrodes voltages which cause a change in the relative position of the first and second members by a Coulomb's force of static electricity between the stationary element and the movable element, which is produced by switching the voltages to the driving electrodes, wherein the driving voltage control section includes a power source of high voltage and direct current, a high voltage switching portion and a driving control portion; the power source including a transformer for raising the voltage of high frequency current signals, and a rectifier for rectifying an output of the transformer to obt
    Type: Grant
    Filed: October 21, 1994
    Date of Patent: September 3, 1996
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Shinji Konno, Takashi Fukuyama, Masahiro Yamamoto
  • Patent number: 5550418
    Abstract: An alternator for use in an automobile comprises a first frame, a second frame, a stator, a shaft, a rotor, a current supply system and fans. The shaft is rotatably coupled to the first frame and the second frame, and extends outwardly beyond the first frame. The current supply system has a pair of slip rings, a pair of brushes and a brush holder. The slip rings are fixed to the shaft, and are electrically connected to a coil of the rotor. The brushes are urged against and in slidable contact with the slip rings, respectively. The brush holder is fixed to the first frame for retaining the brushes; and has a slip ring shield portion for covering and protecting the slip rings. The slip ring shield portion has openings which allow dust produced by the wearing of the brushes to be blown by the action of fans.
    Type: Grant
    Filed: December 28, 1994
    Date of Patent: August 27, 1996
    Assignee: Mando Machinery Corp. Ltd.
    Inventor: Jong-Won Chung
  • Patent number: 5548168
    Abstract: A superconductive rotor, such as an electric generator rotor, has a cylindrical-shaped solid (e.g., iron) core having a pair of diametrically-opposed and longitudinally-extending slots. A longitudinally-extending, racetrack-shaped superconductive coil surrounds the solid core and has straight portions located in the slots. A longitudinally extending, racetrack-shaped thermal shield generally encloses the superconductive coil and has generally straight portions located in the slots. The thermal shield is generally spaced apart from the superconductive coil and from the solid core. A pair of end shafts are each attached to the solid core and are spaced apart from the thermal shield. One end shaft has a cryogen transfer coupling for cooling the superconductive coil, preferably with gaseous helium.
    Type: Grant
    Filed: June 29, 1994
    Date of Patent: August 20, 1996
    Assignee: General Electric Company
    Inventors: Evangelos T. Laskaris, Kenneth G. Herd
  • Patent number: 5548169
    Abstract: A motor with a built-in capacitor is proposed. The capacitor is formed into a ring so that a shaft of the motor penetrates a center portion of the capacitor and is disposed in the motor so that the shaft of the motor penetrates the center portion. The capacitor is mounted at the same time as the motor is mounted and the mounting work of the capacitor is easy. The external shape of the motor itself is the same as that of a conventional motor. The whole structure of the motor is compact as compared with the conventional motor. The motor can be applied to a motor with a capacitor directly connected to a gear mechanism such as a transmission.
    Type: Grant
    Filed: February 22, 1995
    Date of Patent: August 20, 1996
    Assignee: Oriental Motor Co., Ltd.
    Inventors: Takao Iwasa, Takaji Kambayashi
  • Patent number: 5548171
    Abstract: A direct-current motor is provided with a field pole including a main magnetic pole having an axial length of Lm and an auxiliary magnetic pole; and an armature core which is rotatably supported opposite to the inner peripheral side of the main magnetic pole and rotated by the excitation force of the field pole and has an axial length of Lc. The direct-current motor which satisfies the relation of Lm>Lc is such that the corner portions of the main magnetic pole are formed so that the relation between the axial length Ln of the straight section of the main magnetic pole and Lc satisfies 1.15 Lc>Ln.gtoreq.Lc. Therefore, a direct-current motor can be made more lightweight without changing its output characteristics by cutting down the corner portions of the main magnetic pole.
    Type: Grant
    Filed: February 9, 1995
    Date of Patent: August 20, 1996
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yoshihiro Ogawa, Keisaku Zenmei, Shuzo Isozumi
  • Patent number: 5548172
    Abstract: A rotor for use in a line start permanent magnet motor comprises a rotor core having a shaft and including teeth defining slots; a rotor cage, at least a portion of which extends through the slots; and a layer of composite permanent magnet material at least partially coating the rotor core.
    Type: Grant
    Filed: October 27, 1995
    Date of Patent: August 20, 1996
    Assignee: General Electric Company
    Inventors: Gerald B. Kliman, Mark A. Preston, Donald W. Jones
  • Patent number: 5545939
    Abstract: A winding end restrainer for a rotary electrical component comprises a hollow body, location member for locating the body against rotation relative to the component and an insert locatable in the body so as to be non-rotatable relative thereto. Chambers are defined between the insert and the body for receiving respective sections of the winding ends. By preventing rotation of the hollow body and the insert relative to the rotary component, stresses which would otherwise be imparted to the winding ends are greatly reduced.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: August 13, 1996
    Assignee: Lucas Industries plc.
    Inventor: John Cooper
  • Patent number: 5543674
    Abstract: A variable-reluctance rotating dynamoelectric machine is provided with, for each single-phase structure A, B, and C, two rows of airgaps 5-27, 6-28 having the same radius Re connected to each other by means of angular sectors, one of which surrounds stator conductors 8 in the shape of a torus. The sectors are arches 9, 22 each constituted by a stack of strips of sheet metal which are bent along axes X perpendicular to the axis of rotation Z. A pair of arches 9, 22 is formed by cutting a wound and bonded ring of thin magnetic sheet having oriented grains. Cutting by wire-type spark erosion results in the formation of several pairs of teeth per arch. A rotor winding in the shape of a torus or a rotor permanent magnet can complete the machine. The machine is applicable to reluctance motors for vehicle traction, which can also recharge a storage battery.
    Type: Grant
    Filed: June 29, 1993
    Date of Patent: August 6, 1996
    Assignee: Radio Energie
    Inventor: Gerard Koehler
  • Patent number: 5543677
    Abstract: In a slipring-less generator having magnetic coupling rotors embodied in claw pole fashion, it is proposed that the two additional air gaps, which are embodied by annular magnetic flux guide elements, are extended obliquely at an angle to the longitudinal axis of the generator and extend at least in part above or below the field winding, so that with a corresponding enlargement of the further two air gaps present in addition to the working air gap and a resultant reduction of magnetic voltage in these air gaps, either higher power or a shorter structural length with a corresponding weight reduction is obtained.
    Type: Grant
    Filed: September 19, 1994
    Date of Patent: August 6, 1996
    Assignee: Robert Bosch GmbH
    Inventor: Bernhard Fakler
  • Patent number: 5543678
    Abstract: A flat motor. The flat motor comprises a substrate, a cantilevered, resilient lever arm mounted, by a passive end, on the substrate; and a shape-memory transducer acting on the lever arm wherein movement of the transducer deflects the lever arm.
    Type: Grant
    Filed: May 11, 1993
    Date of Patent: August 6, 1996
    Inventor: Dane A. Hoiberg