Having Winding On Center Leg And Magnetically Coupled Poles Patents (Class 310/216.022)
  • Patent number: 11309779
    Abstract: This invention provides a brushless dc dynamo, which is characterized by using semiconductor switches to replace commutators used in conventional brush DC dynamo, wherein the periodically mechanical contact of the armature and different electrodes are replaced with static electronic switching array to periodically switch electrically without any mechanical contact switching between the armature and electrodes. Meanwhile, the armature can work as conventional mode to always maintain the distribution of the armature current such that the magnetic field of the rotator is perpendicular to the magnetic field of the stator during rotating, and the damage of switched contacts caused by mechanical contact of the armature and electrodes can be avoided.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: April 19, 2022
    Inventor: Chun-Jong Chang
  • Patent number: 11015608
    Abstract: An axial flow pump comprises a housing having a bore, a cylindrical permanent magnet within the housing bore, and at least one impeller inside the permanent magnet and adapted to cause fluid to flow within the cylindrical permanent magnet. The permanent magnet is configured to rotate in the bore around its longitudinal axis. A motor lamination stack surrounds the cylindrical permanent magnet. The motor lamination stack is formed substantially as a cuboid, extending in a width and height direction perpendicular to the axis of rotation of the cylindrical permanent magnet. The diameter of the bore is at least 80% of the dimension of the cuboid in the height direction. A coil of the motor lamination is configured to be energized and to create a rotating magnetic field in the lamination stack to rotate the cylindrical permanent magnet around its longitudinal axis. The coil is disposed to one or both sides of the pump.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: May 25, 2021
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: John Paul Franz, Tahir Cader
  • Patent number: 10862383
    Abstract: A transverse flux reciprocating motor and a reciprocating compressor having a transverse flux reciprocating motor are provided. The transverse flux reciprocating motor may include a stator wound with a magnet coil, a mover inserted into the stator and coupled with a magnet having opposite magnetic poles in an orthogonal direction with respect to a magnetic flux generated by the magnet coil, and a magnetic resonance spring that allows the mover to perform a resonance motion with respect to the stator using a force trying to move toward a side with low magnetic resistance between the stator and the mover, whereby the transverse flux reciprocating motor and the reciprocating compressor having a transverse flux reciprocating motor may be reduced in size and weight and obtain high efficiency.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: December 8, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Sangsub Jeong, Jaebeum Kim, Jungsik Park, Susok Lee
  • Patent number: 10186915
    Abstract: A Blushless Direct Current (BLDC) motor may include a motor housing; a stator including a stator core installed within the motor housing and a coil wound in the stator core and that generates a magnetic field by applied power; and a rotor disposed within the stator and in which a magnet that interacts with the magnetic field is installed and that rotates within the stator by an interaction with the magnetic field. The stator core may include a back yoke in which straight portions and curved portions are alternately formed; and teeth protruded from the back yoke toward the magnet. The tooth include a neck protruded from the back yoke, and a shoe protruded from the neck and separated from the magnet and that encloses at least a portion of the magnet. A ratio A/B of a width A of the neck to a width B of a shoe end portion is 2.5 to 3.5. By optimizing a ratio A/B of a width A of the neck to a width B of the shoe end portion constituting the stator core, efficiency of a BLDC motor may be maximized.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: January 22, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Kwangyong Jang, Sangchul Lee, Kyunghoon Lee, Changhum Jo
  • Patent number: 8963396
    Abstract: An electromechanical device includes a rotor and a stator, wherein the stator includes multiple teeth excitable by a coil. The stator is formed from multiple stator sections with one section having a protrusion in spaced relation with a first tooth and a second section having a second protrusion in spaced relation with a second tooth. The protrusions have voids for receiving opposing protrusions in an overlapping manner to integrally form the first stator section with the second stator section. The electrical coil is extended around at least a portion of one tooth before mating the multiple stator sections. The rotor has a diametral magnetized magnet extending into the aperture.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: February 24, 2015
    Assignee: Pangolin Laser Systems, Inc.
    Inventor: William R. Benner, Jr.
  • Patent number: 8772998
    Abstract: The device comprises a single circular row of permanent magnetic poles and a circular row of electromagnets, magnetic-force-conducting elements of which have central polar part and two lateral polar parts connected to the central polar part and spaced from opposing (in the direction which is essentially perpendicular to the rotation axis) sides of the central polar part. Winding is situated upon central polar part. The part of winding positioned between the polar parts of the magnetic-force-conducting element is more than half the length of the whole winding. Central polar part may have at least one groove. The distance between the centers of adjacent polar surfaces of the magnetic-force-conducting element is set depending on the angle between the magnetic poles in the circular row. The angular dimension of the polar surface of the lateral polar part depends on the angular dimension of the polar surface of the central polar part.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: July 8, 2014
    Inventor: Andrei Mikhailovich Maximov
  • Patent number: 8610329
    Abstract: A drive unit for a hair cutting machine comprises a driving motor that includes a substantially U-shaped stator which has a first leg, a second leg, and at least one additional leg located between the first leg and the second leg, at least one field coil which can be disposed on the at least one additional leg, and an armature. Lateral air gap sections are formed between the first and second leg and the armature while central air gap sections are formed between the additional leg and the armature. The central air gap sections and the lateral air gap sections extend at an angle from a longitudinal axis. A first nose, which faces away from the additional leg, is arranged at the end of the first leg, while a notch, which faces the additional leg and corresponds to the first nose, is arranged on the second leg.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: December 17, 2013
    Assignee: Wahl GmbH
    Inventors: Heinrich Schwer, Stefan Müller, Gerhard Kienzler
  • Patent number: 8476794
    Abstract: An in-wheel motor having an inner stationary portion (the stator), and an outer rotating portion (the rotor) that rotates around the stator and drives a wheel directly attached to the rotor. The stator may comprise an inner support structure around which a plurality of magnets having windings are disposed in a circumferential fashion. The rotor circumferentially surrounds the stator, and includes permanent magnets placed at an interval along a surface of the rotor. An intermediate layer between the rotor and the stator is comprised of a bearing that allows movement of the rotor relative to the stator. By attaching a wheel directly to the outer surface of the rotor, a compact and efficient wheel-mounted electrical motor may be provided.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: July 2, 2013
    Assignee: Empire Technology Development LLC
    Inventor: Velayutham Kadal Amutham
  • Patent number: 8461736
    Abstract: An electric motor (100) for operating a shutter or solar protection element in a building, comprising at least two phases (10; 20, 30; 50, 60) and a magnetized rotor (16; 40; 70) common to both phases, each phase being relative to a rotor portion (41, 42; 71; 72) in the direction of the axis of the rotor and comprising two windings (14, 15), wherein each phase comprises an insulating yoke frame (13) on which the two windings are produced and which has a central portion (131) separating the windings, the central portion being provided with a first through-recess (134) able to surround a rotor portion passing through the phase.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: June 11, 2013
    Assignee: Somfy SAS
    Inventors: Serge Bruno, Pierre-Emmanuel Cavarec
  • Publication number: 20130076194
    Abstract: An electromechanical device includes a rotor and a stator, wherein the stator includes multiple teeth excitable by a coil. The stator is formed from multiple stator sections with one section having a protrusion in spaced relation with a first tooth and a second section having a second protrusion in spaced relation with a second tooth. The protrusions have voids for receiving opposing protrusions in an overlapping manner to integrally form the first stator section with the second stator section. The electrical coil is extended around at least a portion of one tooth before mating the multiple stator sections. The rotor has a diametral magnetized magnet extending into the aperture.
    Type: Application
    Filed: April 13, 2012
    Publication date: March 28, 2013
    Inventor: William R. Benner, JR.
  • Patent number: 7911090
    Abstract: A stator of an electrical machine has a cross section, a longitudinal extension, a jacket surface, a plurality of winding holders configured for receiving field windings, the winding holders being distributed inhomogenously around an inner circumference of the cross section, such that a density of the field windings in at least one first region formed around a stator circumference is smaller than in an adjacent second region.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: March 22, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Ludwig Schoen, Florian Esenwein
  • Publication number: 20100270893
    Abstract: An electric motor (100) for operating a shutter or solar protection element in a building, comprising at least two phases (10; 20, 30; 50, 60) and a magnetized rotor (16; 40; 70) common to both phases, each phase being relative to a rotor portion (41, 42; 71; 72) in the direction of the axis of the rotor and comprising two windings (14, 15), wherein each phase comprises an insulating yoke frame (13) on which the two windings are produced and which has a central portion (131) separating the windings, the central portion being provided with a first through-recess (134) able to surround a rotor portion passing through the phase.
    Type: Application
    Filed: December 23, 2008
    Publication date: October 28, 2010
    Applicant: Somfy SAS
    Inventors: Serge Bruno, Pierre-Emmanuel Cavarec
  • Patent number: 7737597
    Abstract: The invention relates to a module (6) for primary parts (12) of synchronous motors (7, 8, 13) which are excited by permanent magnets, which comprise at least one secondary part (9) which is at least sectionally devoid of permanent magnets. Said secondary part (9) is made of an iron structure comprising teeth (11) which leads to the primary part (12). Said module (6) comprises at least one permanent magnet (1, 14) and at least one iron rod (2) which is arranged on the opposite sides. Recesses (3) are arranged between the iron rod (2) on one side and at least one winding (5) is guided about the iron rod (2). An additional module (6) can be secured at least to one side of the module (6) such that the iron rod (2) engages in the recesses (3) of the adjacent module (6) and the modules (6) can be placed together in relation to various predetermined primary parts (12).
    Type: Grant
    Filed: August 11, 2006
    Date of Patent: June 15, 2010
    Assignee: Siemens Aktiengesellschaft
    Inventors: Zeljko Jajtic, Gerhard Matscheko, Stefan Schiele, Wolfgang Wolter
  • Patent number: 7712982
    Abstract: An actuator includes a rotor, a stator containing the rotor, and a bearing to support the rotor to be rotatable with respect to the stator about the central axis of the rotor and an axis perpendicular to the central axis. The rotor includes rotor central magnetic poles, a rotor upper magnetic pole, and a rotor lower magnetic pole. The stator includes stator central magnetic poles larger in number than the rotor central magnetic poles, stator upper magnetic poles, stator lower magnetic poles, central coils to appropriately magnetize the stator central magnetic poles, upper coils to appropriately magnetize the stator upper magnetic poles, and lower coils to appropriately magnetize the stator lower magnetic poles. The length of each stator central magnetic pole along a central axis of the stator is larger than a length of each rotor central magnetic pole along the central axis of the rotor.
    Type: Grant
    Filed: March 11, 2008
    Date of Patent: May 11, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Toshikatsu Akiba
  • Patent number: 7687948
    Abstract: Certain exemplary embodiments comprise a system, which can comprise a radial magnetic bearing static portion. The radial magnetic bearing static portion can comprise a plurality of electromagnets. The radial magnetic bearing static portion can comprise a plurality of pulse width modulated amplifiers, each of which can be adapted to provide electrical energy to a corresponding electromagnet of the plurality of electromagnets.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: March 30, 2010
    Inventors: Christopher K. Sortore, Robert Jett Field, Victor Iannello, Kirk Treubert
  • Publication number: 20090174280
    Abstract: A polyphase motor, for example for applications for driving pumps or ventilators in the automobile industry, including a stator part excited by electric coils and a rotor exhibiting N pairs of poles that are magnetized radially in alternate senses, the stator part exhibiting wide teeth and narrow teeth extending radially from an annular ring. The wide teeth carry the coil windings and the distance between a wide tooth and a narrow tooth is greater than the width of a narrow tooth.
    Type: Application
    Filed: March 28, 2007
    Publication date: July 9, 2009
    Applicant: Moving Magnet Technologies (MMT)
    Inventor: Daniel Prudham
  • Patent number: RE49840
    Abstract: A treble quantum dot strip array comprising a red, a green and a blue photon transparent stationary colloidal epoxy suspension volume strip segment each including a plurality of red photon emitting quantum dots responsive to an electrical signal applied thereon to provide a photon emission in the red wavelength and a uV attenuating filter, wherein each of said red, blue and green segments are disposed to form a parallel treble array of segments are disposed to provide a photon path from a photon source through said uV attenuating filter. Alternate embodiments provide a quantum dot colour electrically conductive strip to emit a selected colour in response to a corresponding electric said signal applied thereacross, and including a COB (chip on board) LED (Light Emitting Diode) array apparatus.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: February 13, 2024
    Assignee: WePower Technologies LLC
    Inventor: David Deak, Sr.