Solenoid And Core Type Patents (Class 310/14)
  • Patent number: 10109939
    Abstract: An electronic system includes first and second circuit boards and a flexible circuit connector. The flexible circuit connector is configured to electrically connect the first and second circuit boards. The flexible circuit connector includes first and second connectors and a spiral portion. The first connector is configured to connect to the first circuit board. The second connector is configured to connect to the second circuit board. The spiral portion is connected between the first and second circuit boards and includes a circumferential portion that extends around the second connector.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: October 23, 2018
    Assignee: Rosemount Aerospace Inc.
    Inventor: Neal R. Whatcott
  • Patent number: 10014966
    Abstract: A linear fader includes a slider that is configured to slide along a rail. The slider includes a magnet. The linear fader also includes a plurality of coils spaced along a length of the rail, one or more sensors configured to detect a position of the slider along the rail, and control circuitry operatively coupled to the plurality of coils and the one or more sensors. The control circuitry is configured to receive a signal corresponding to a first location of the slider from at least one of the one or more sensors, receive a desired location of the slider, and cause a first electrical current to pass through the plurality of coils, thereby generating a force on the slider in a direction toward the desired location.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: July 3, 2018
    Assignee: Sound Devices, LLC
    Inventors: Matt Anderson, Steven Popovich, Paul Isaacs, Jason McDonald
  • Patent number: 9969023
    Abstract: Solder housed in flow tank 20 is ejected from nozzle 22 by a pump provided inside flow tank 20. Jet motor 26 that drives the pump is provided outside flow tank 20, and cooling device 30 is provided between flow tank 20 and jet motor 26. Cooling device 30 includes cooling pipe 52 that is formed folded back on itself. Nitrogen gas is supplied from an upper end of cooling pipe 52, flows along cooling pipe 52, and flows out of a lower end of cooling pipe 52 so as to be supplied to flow tank 20. The temperature of the nitrogen gas increases due to heat dissipated from jet motor 26, thus lowering the temperature of jet motor 26. Heat is transferred from jet motor 26 to the nitrogen gas, and jet motor 26 is cooled satisfactorily.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: May 15, 2018
    Assignee: FUJI MACHINE MFG. CO., LTD.
    Inventors: Nobuyuki Ishikawa, Katsunori Tanaka, Mitsuhiro Nishibori
  • Patent number: 9912277
    Abstract: In one embodiment, a control circuit for a linear vibration motor may be configured to drive the linear vibration motor to vibrate using a closed loop run mode followed by an open loop run mode, and may be configured to control the linear vibration motor to stop vibrating using an anti-drive signal wherein the frequency is adjusted to be near to an estimated value of the natural frequency of the linear vibration motor.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: March 6, 2018
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventor: Tsutomu Murata
  • Patent number: 9899132
    Abstract: An actuator can include a housing, core assembly, and first and second electromagnets. The housing can have a first pole piece, second pole piece, and central pole piece disposed between the first and second pole pieces. The central pole piece can have a central body and a bridge. The bridge can be between the first and second pole pieces and axially movable relative thereto. The core assembly can be received in the housing. The core assembly can be movable along a first axis between a first core position and a second core position. The core assembly can include a permanent magnet, a first core, and a second core. The first and second cores can be coupled to the permanent magnet for common axial movement. The first and second electromagnets can be spaced axially apart by the central body and can have opposite polarities.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: February 20, 2018
    Assignee: American Axle & Manufacturing, Inc.
    Inventor: Curt D. Gilmore
  • Patent number: 9857972
    Abstract: An operation device for performing an operation input on a play machine has an operation unit, a support that rotatably supports the operation unit, a first magnetic member that rotates integrally with the operation unit, a second magnetic member in which a magnetic force acts between the first magnetic member and the second magnetic member, and a switching unit that switches a distance between the first magnetic member and the second magnetic member.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: January 2, 2018
    Assignee: OMRON Corporation
    Inventor: Hiroyuki Onitsuka
  • Patent number: 9837884
    Abstract: A linear motor includes an excitation unit including a shaft and a plurality of permanent magnets located in the shaft, and an armature including a plurality of coils surrounding the excitation unit and a magnetic cover covering the coils. The plurality of coils of the same phase group are continuously wound over a plurality of insulative bobbins. A tap conductor, a jumper wire between the coils, and a terminal wire of the coils in different phase groups that are continuously wound are separately disposed in different corner portions in the magnetic cover, and the terminal wire of each phase is connected to a circuit board.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: December 5, 2017
    Assignee: Sanyo Denki Co., Ltd.
    Inventors: Yuqi Tang, Takashi Matsushita
  • Patent number: 9787169
    Abstract: An embodiment of an electromagnetic actuator, such as a moving magnet actuator (MMA), includes a back iron, a first coil winding, a second coil winding, a mover, and a permanent magnet. The first and second coil windings are connected to the back iron, and have generally annular shapes. The mover moves relative to the back iron during use of the MMA. The permanent magnet is connected to the mover and moves with the mover during use of the MMA. The permanent magnet has a generally annular shape.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: October 10, 2017
    Assignee: The Regents of the University of Michigan
    Inventors: David Hiemstra, Gaurav Parmar, Cory Welch, Shorya Awtar
  • Patent number: 9711245
    Abstract: A magnetic jack type control element drive mechanism for precision position control of a control element assembly, satisfies the following conditions: D1=D2=P+D5; D3=P×2; D4=D3×(N?½), (N is an arbitrary natural number), wherein D1 represents a lift gap of the upper motor assembly; D2 represents a lift gap of the lower motor assembly; D3 represents a space width between tips of adjacent teeth of the drive shaft; D4 represents a gap between an upper latch and a lower latch; P represents pitch that is a distance of ascent or descent of the drive shaft; and D5 represents a margin which is a separation space between the teeth and the upper latch or the lower latch when the upper latch or the lower latch is inserted into the teeth of the drive shaft.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: July 18, 2017
    Assignee: KEPCO ENGINEERING & CONSTRUCTION COMPANY, INC.
    Inventors: Jin Seok Park, Yong Tae Jang, Myoung Goo Lee, Sang Gyoon Chang, Dae Hee Lee
  • Patent number: 9653980
    Abstract: An object of the invention is to provide a cheap, efficient and polyvalent energy harvesting system able to exploit several energy sources. The invention proposes an energy harvesting system (100) including a frame, at least one permanent magnet (101) having a North/South direction, and at least one winding (107, 108) wound according to a winding direction around a core (103a-103b) including a high magnetic permeability material, at least said at least one permanent magnet being mounted on the frame to be able to oscillate relatively to the winding, characterized in that the system includes a magnetic flux divider arranged between said at least one permanent magnet and said at least one winding in order to concentrate the magnetic flux at discrete positions of maximum magnetic flux then forming equilibrium positions where the winding faces one of the said discrete positions of maximum magnetic flux.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: May 16, 2017
    Assignee: UNIVERSITE DE LIEGE
    Inventor: Philippe Laurent
  • Patent number: 9584000
    Abstract: A method and device of torque generation based on electromagnetic effect is provided. An electromagnetic torque whose direction is opposite to the motor driving direction is generated in a magnetic field when a motor-drive armature winding is adopted based on the electro-magnetic induction principle. Meanwhile, a reverse electromagnetic torque which is reverse to the armature winding with the same magnitude, is applied on a magnet set and is transmitted to an underactuated system so as to provide required torque for the underactuated system. Advantageously, the provided torque is in direct ratio to speed, difficulty in control is significantly reduced, two-stage electromagnetic variable speed can be achieved, the design of the system is simple and reliable with a concise and clear structure, and the device may be employed in a wide variety of applications.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: February 28, 2017
    Assignee: BEIJING UNIVERSITY OF TECHNOLOGY
    Inventors: Xiaogang Ruan, Xiaoqing Zhu, Rongyi Sun, Ruoyan Wei, Naigong Yu, Daoxiong Gong, Guoyu Zuo
  • Patent number: 9478339
    Abstract: An actuator can include a housing, plunger, core assembly, biasing member, and first and second electromagnets. The housing can have two end poles, and a central pole therebetween. The plunger can be configured for axial translation relative to the housing. The core assembly can move between first and second positions and can be coupled to the plunger. The core assembly can include first and second cores spaced apart by a permanent magnet. The first and second electromagnets can be spaced apart by the central pole and can have opposite polarities. The biasing member can bias the plunger toward a first plunger position when the core assembly is in the first position, and can bias the plunger toward a second plunger position when the core assembly is in the second position.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: October 25, 2016
    Assignee: American Axle & Manufacturing, Inc.
    Inventor: Curt D. Gilmore
  • Patent number: 9455076
    Abstract: A solenoid locking mechanism connects a solenoid body to a male coupling member. The male coupling member surrounds a housing at the end of the solenoid. A pair of ball bearings is retained in the housing and extends into the coupling member. Movement of the ball bearings by the plunger control locking or releasing the coupling member. In an alternate embodiment the solenoid locking mechanism secures the coupling mechanism to a lockable rod that has a ball nose at one end. The locking mechanism has a locking chamber or socket with a ball bearing mounted in the chamber wall. The ball bearing is moveable between a position in which it extends into the locking chamber or can be moved out from the locking chamber. The movement of the ball bearing is controlled by a plunger in the solenoid body. The ball nose is selectively locked in the locking chamber or released from the locking chamber depending on the position of the plunger which controls the position and movement of the ball bearing.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: September 27, 2016
    Assignee: Magnet-Schultz of America, Inc.
    Inventor: Anthony Cascolan
  • Patent number: 9424972
    Abstract: A solenoid for a vehicle starter includes at least one coil with a passage extending through the coil in an axial direction. The solenoid further includes a plunger configured to move in the axial direction within the passage. The plunger includes a cylindrical outer surface with a substantially uniform diameter and a circumferential notch. The cylindrical outer surface includes a first portion with a first diameter on one side of the circumferential notch, and a second portion with the first diameter on an opposite side of the circumferential notch. The circumferential notch includes a portion with a second diameter that is less than the first diameter.
    Type: Grant
    Filed: May 1, 2014
    Date of Patent: August 23, 2016
    Assignee: Remy Technologies, LLC
    Inventors: Stephen P. Santichen, Michael D. Bradfield
  • Patent number: 9407129
    Abstract: A brushless DC motor comprises a plurality of magnets positioned at a distance from one another on a circular structure, and a plurality of solenoids provided each around a static solenoid housing, wherein said solenoid housing is structured with a void portion through which said plurality of magnets can pass when the circular structure comprising said plurality of magnets rotates around its axis.
    Type: Grant
    Filed: March 19, 2013
    Date of Patent: August 2, 2016
    Assignee: VASTECH HOLDINGS LTD.
    Inventors: Victor Shlakhetski, Alexander Mostovoy, Sergey Zatsarinin, Simen Shoikhedbrod
  • Patent number: 9373993
    Abstract: A haptic actuator (20(X)) provides compact mounting for a haptically-actuated assembly by mounting at least a portion of the haptically-actuated assembly to magnetic circuit members of the haptic actuator. The haptic actuator comprises a first magnetic member (62); a second magnetic member (60); a field generator (30); and a resilient connector (70). The first magnetic member (62) is configured to have a driven part (124) of the haptically-actuated assembly mounted to the first magnetic member (62). The second magnetic member (60) is selectively separated by at least one air gap from the first magnetic member (62) and is configured to have a stationary part of the haptically-actuated assembly (122) connected to the second magnetic member (62). The second magnetic member (60) is positioned at least partially within the field generator (30) and the first magnetic member (62) is positioned externally to the field generator (30).
    Type: Grant
    Filed: July 5, 2013
    Date of Patent: June 21, 2016
    Assignee: SAIA-BURGESS, INC.
    Inventor: James C. Irwin
  • Patent number: 9343218
    Abstract: An assembly includes an electromagnetic actuator (80) and a voltage response arrangement (26) to enable the position of the armature (1) within the actuator to be monitored. The actuator includes two coils (4) joined together in series, the armature being switchable between at least two magnetically latched stable rest positions by passing a current pulse through the coils, and an output contact (82) electrically coupled to the junction (24) between the coils to facilitate monitoring of the voltage at the junction. The voltage response arrangement (26) is electrically coupled to the output contact (82) so as to provide an output signal giving an indication of the position of the armature (1) in response to the voltage generated on the output contact when a current pulse is passed through the coils (4). A method of monitoring the armature position is also provided.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: May 17, 2016
    Assignee: Camcon Oil Limited
    Inventor: Ian Lamprell
  • Patent number: 9323023
    Abstract: A lens focusing device includes a lens holder, a winding fitted around the lens holder, and an outer case enclosing the lens holder therein. The outer case includes an outer wall portion, and multiple inner wall portions connected to the outer wall portion via multiple connecting portions. The inner wall portions are located between the lens holder and the winding, and respectively include an inner surface, an outer surface, and a first and a second side surface. The lens holder is formed on an outer face with confining areas, each of which includes a main surface and a first and a second raised side surface respectively facing against the inner surface and the first and second side surfaces, so that the inner wall portions are limited to move relative to the lens holder only within the confining areas. Therefore, the lens focusing device is impact-resistant and undue-twisting protected.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: April 26, 2016
    Assignee: TDK TAIWAN CORPORATION
    Inventors: Shang-Yu Hsu, Kun-Shih Lin, Fu-Yuan Wu
  • Patent number: 9260954
    Abstract: A method for pumping production fluid from a wellbore includes deploying a downhole assembly of an artificial lift system (ALS) into the wellbore. The downhole assembly includes a linear electric motor (LEM) and a pump. The method further includes operating the LEM, thereby reciprocating the pump and lifting production fluid from the wellbore to surface. The LEM includes a stator and a reciprocating head having permanent magnets. The production fluid leaks through an interface formed between the head and the stator.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: February 16, 2016
    Assignee: Oilfield Equipment Development Center Limited
    Inventors: Alexandr Vasilievich Filippov, Salikhyan Shakirianovich Sharipov, Vladimir Iosifovich Sagalovskiy, Andrei Vladimirovich Sagalovskiy
  • Patent number: 9172291
    Abstract: A vertical actuator drive having gravity compensation has a first subassembly and a second subassembly, one of the two subassemblies being stationary and the other of the two subassemblies being movable in the vertical direction. The first subassembly has a first magnetic yoke provided with a coil, and the second subassembly has a second magnetic yoke provided with at least one magnet which is oriented toward the coil. A horizontal gap between the first and second magnetic yoke in the region of the at least one magnet is variable in the vertical direction, so that a reluctance force acts between the first and second subassemblies in an operating range of the actuator drive, the reluctance force opposing the weight force of the movable one of the two subassemblies.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: October 27, 2015
    Assignee: ETEL S.A.
    Inventor: Vincent Cardon
  • Patent number: 9048718
    Abstract: A linear vibrator is disclosed. The linear vibrator includes a housing having a base and a cover, a number of elastic members connected to the housing, a vibrating unit suspended in the housing by the elastic members, and a coil positioned in the housing. The vibrating unit includes a pole plate received in a recess formed in the vibrating unit, and a damper positioned on the pole plate by magnetic flux.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: June 2, 2015
    Assignees: AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO., LTD., AMERICAN AUDIO COMPONENTS INC.
    Inventor: Yu-Qing Zhang
  • Patent number: 9035502
    Abstract: A multifunctional voice coil motor is disclosed, the motor including a rotor including a bobbin and a plurality of magnets arranged at a periphery of the bobbin, a stator including a housing wrapping each magnet and a plurality of coil blocks each arranged at a position corresponding to that of each magnet, a base coupled to the housing, and an elastic member elastically supporting the rotor.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: May 19, 2015
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Sangok Park
  • Patent number: 9025796
    Abstract: A vibration generator includes a coil arranged to generate magnetic fields, a ring-shaped yoke arranged to amplify an electromagnetic force generated by the magnetic fields in cooperation with the coil, a vibrating body arranged radially inward of the coil to move in a thrust direction, a ring-shaped magnet arranged in an outer peripheral portion of the vibrating body and opposed to the coil, and a spring arranged to support the vibrating body on at least one side of the vibrating body in thrust-direction.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: May 5, 2015
    Assignee: Nidec Seimitsu Corporation
    Inventors: Keisuke Furuichi, Tomohiro Akanuma
  • Patent number: 8994235
    Abstract: An electric motor for operating a small electric device is disclosed. The electric motor includes at least one first oscillatory motor component; an inductor for producing a magnetic field; and a first magnet arrangement including a first permanent magnet that generates a force for activating a rotatory oscillating movement (R) of the at least one first oscillatory motor component around a rotating axis (z). The at least one first oscillatory motor component and the first magnet arrangement are configured such that a magnetic reluctance torque acting between the first oscillatory motor component and the first permanent magnet operates as a righting moment for the rotatory oscillating movement (R).
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: March 31, 2015
    Assignee: Braun GmbH
    Inventors: Alexander Doll, Uwe Schober, Frank Kressman
  • Publication number: 20150076930
    Abstract: An inner diameter of a third stator core is greater than an inner diameter of a second stator core. When a first stator core, the second stator core, and the third stator core are placed in an inner periphery of a coil, a jig is inserted from an inner-periphery opening of a first end side of the third stator core into the third stator core to directly position the first stator core, the second stator core, and the third stator core in a radial direction. Therefore, a side force generated by an axis deviation between the first stator core, the second stator core, and the third stator core can be reduced.
    Type: Application
    Filed: September 15, 2014
    Publication date: March 19, 2015
    Inventor: Jiro KONDO
  • Publication number: 20150061417
    Abstract: A device for powering interactive appliances in moving playground equipment includes an electrical generator mounted onto the moving element of the playground equipment, characterized by the design of the electrical generator, which includes a case (1) inside of which there is fixed a tube (7) made out of insulating material, on the tubes periphery surface there are fixed n number of coils (4). n is greater or equal to one. The coils (4) are divided from each other by separating insolating elements (3). Inside the tube it is placed a permanent cylindrical magnet (5) allowing for its sidestep movement along the tube. At the two ends of the tube (7) there are fixed rebound elements (6) The terminals of single coils or a group of connected coils (4) are terminals of the powering device, connected to the interactive appliances.
    Type: Application
    Filed: August 30, 2013
    Publication date: March 5, 2015
    Applicant: PLAYGROUND ENERGY LTD
    Inventors: Hristo Buryanov Aleksiev, Ilian Vladimirov Milinov
  • Patent number: 8957558
    Abstract: A linear vibration generator is disclosed. The linear vibration generator in accordance with an embodiment of the present invention includes a stationary part, which has a polygonal-prism-shaped coil and in which the polygonal-prism-shaped coil induces a magnetic field by having an electric current supplied, a vibrating part, which has a polygonal-prism-shaped magnet and in which a portion of the polygonal-prism-shaped magnet is inserted into the coil, an elastic member, which is coupled to the stationary part and elastically supports the vibrating part such that the vibrating part can move linearly, and a lubricating band, which is formed on an outer circumferential surface of the magnet.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: February 17, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Jun-Kun Choi
  • Patent number: 8946947
    Abstract: A linear stepper motor is used for the displacement of an armature parallel to a stator having N steps. The stator includes (N+2) stator pole pieces which are enclosed by a magnetic guiding element and are each approximately the same distance from neighboring stator pole pieces. Furthermore, at least one coil is located between two stator pole pieces. The armature is enclosed by the stator in the radial direction and has a permanent magnet magnetized parallel to the stator which is disposed between two armature pole pieces. As a result of the reluctance forces, the armature occupies stable idle positions inside the stator in which the stator pole pieces lie opposite the armature pole pieces. By energizing the coils with a short current pulse, the armature can be displaced inside the stator between the different stable idle positions.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: February 3, 2015
    Assignee: Karl Storz GmbH & Co. KG
    Inventor: Martin Kelp
  • Patent number: 8922069
    Abstract: Provided is a linear motor actuator capable of oscillating a mover without using mechanical resilience of an elastic body. A first permanent magnet 3a and a second permanent magnet 3b magnetized in an axis direction are disposed in a mover 4 in the direction of the axis. A first coil 1a and a second coil 1b are disposed in a stator 2 so as to surround the first permanent magnet 3a and the second permanent magnet 3b, respectively. Alternating currents having the same phase are applied to the first coil 1a and the second coil 1b such that the phase of thrust generated in the first coil 1a and that of thrust generated in the second coil 1b are shifted from each other. At this moment, a center-to-center pitch LC1 between the center of the first coil 1a and that of the second coil 1b in the axis direction differs from a pole-to-pole pitch LM1 of the mover.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: December 30, 2014
    Assignee: THK Co., Ltd.
    Inventor: Junichiro Iwaki
  • Patent number: 8901783
    Abstract: Techniques for providing directional force induction in a handheld device for use in, e.g., personal navigation applications. In an exemplary embodiment, a magnetic element is provided on a mechanical support fixedly attached to a chassis of the handheld device. One or more conducting coils surround the support. Current is generated in the one or more conducting coils to accelerate the magnetic element relative to the support, causing a tactilely perceptible force to a user of the handheld device due to the recoil of the chassis from the movement of the magnetic element. In an exemplary embodiment, passive movement of the magnetic element due to, e.g., physical jostling of the handheld device, may be used to deliver energy back to the system for energy harvesting.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: December 2, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Sherman A. Gregory, Martin H. Renschler
  • Patent number: 8890378
    Abstract: An electrical power supply device (10) for electrically powering equipment on a rotary rotor (2) of an aircraft (1), which rotor is driven by a shaft (5), said device (10) comprising a removable stick (11). The stick (11) includes an upper alternator (20) and an upper tube (12) secured to said shaft (5) so as to be constrained in rotation therewith, said upper alternator (20) having a plurality of upper coils (21) fastened to an upper inside peripheral surface (12?) of said upper tube (12), said stick (11) having a rod (13) carrying an upper permanent magnet (22), said device (10) having a mechanism (30) so that said rod (13) and said upper tube (12) move with distinct rotary movements, said mechanism (30) having connection means (31) so as to be connectable to a reference member (8, 9) of an aircraft (1).
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: November 18, 2014
    Assignee: Airbus Helicopters
    Inventors: Vincent Bourget, Serge Giordano, Nicolas Imbert, Charles Chuc
  • Patent number: 8866349
    Abstract: A solenoid includes a stationary member, a movable member being movable relative to the stationary member and spring disposed between the stationary member and the movable member. The stationary member includes a housing with an end wall and a side wall, a first permanent magnet attached to the end wall, a second permanent magnet attached to the side wall and a magnetic flux concentrator configured to concentrate a magnetic field generated by the second permanent magnet with a magnetic field generated by the first permanent magnet. The movable member includes a head inserted into the housing. The head is made of magnetically conductive material. The stationary member further includes a coil surrounding the head of the movable member. When the coil receives a pulse current, the movable member is driven from an extended/retracted position to a retracted/extended position.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: October 21, 2014
    Assignee: Johnson Electric S.A.
    Inventors: Yue Li, Jin Yun Gan, Chui You Zhou, Yong Wang, Xiao Ning Zhu
  • Patent number: 8826646
    Abstract: A fluid delivery device, in particular for delivering exhaust gas posttreatment media, such as a urea-water solution, for an internal combustion engine, includes a movable work wall, in particular a work diaphragm. A work chamber is provided for a fluid that is to be delivered via at least one fluid connection. The work chamber is capable of being increased and decreased in size by means of the movable work wall, the at least one fluid connection, and at least one mechanism for moving the work wall upon an intake stroke and a compression stroke. The at least one mechanism is embodied such that the force for moving the work wall both in the intake stroke and in the compression stroke includes a Lorentz force.
    Type: Grant
    Filed: April 2, 2010
    Date of Patent: September 9, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Christoph Waletzek, Peter Holek, Ralph Schmidt
  • Patent number: 8786143
    Abstract: A magnetically actuated reciprocating motor utilizes the stored energy of permanent magnets and an electromagnetic field to reciprocally drive a magnetic actuator. A converting mechanism converts the reciprocating motion of the magnetic actuator to rotary motion for powering a work object. A solenoid, comprising a nonferromagnetic spool having a tubular center section with a coil of wire wrapped around the center section, is connected to a source of power and a switching mechanism. The magnetic actuator has permanent magnets disposed inside a tubular shaft at each end thereof. The switching mechanism switches the magnetic polarity at the ends of the solenoid to alternatively repel and attract the permanent magnets. The shaft is reciprocatively received through the center section of the solenoid. A controlling mechanism interconnects an output shaft, rotatably powered by the magnetic actuator, and the switching mechanism to switch the polarity of the solenoid to drive the magnetic actuator.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: July 22, 2014
    Inventor: Kendall C. Gosvener
  • Patent number: 8742632
    Abstract: A linear motor includes an assembly of two magnets separated by a non-magnetic spacer wherein the assembly is coaxially affixed inside of a housing, which results in an air gap therebetween. The magnets are positioned to have a same direction of magnetization. A first embodiment of the motor includes a coil carrier having a single electrical coil of two sections wound in the same direction and positioned into the corresponding two winding areas of the carrier. The coil carrier is movably positioned into the air gap and further to surround the assembly, thereby moving along an axial direction of the motor. A second embodiment includes two coils that wound in a same direction with the respective separated wires and positioned into the respective two winding areas of the coil carrier.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: June 3, 2014
    Assignee: Moticont
    Inventors: Fariborz Aaron Eghbal, Joseph Benjamin Hanukaai, Vahid David Hannani
  • Patent number: 8729747
    Abstract: A method and apparatus for motional/vibrational energy harvesting are disclosed. Embodiments of the subject invention utilize the non-resonant chaotic behavior of a free-rolling magnet to generate power. In one embodiment, the magnet can be spherical, cylindrical, or elliptical. The magnet can roll about a linear, cylindrical, helical, or cage-like track. The changing magnetic flux due to the magnet rolling about the track induces current in surrounding coils. The coils can be provided around the track using a continuous winding placement, segmented winding placement, or fractional winding placement. Multiple coil phases are also possible. For embodiments utilizing multiple magnets, spacers can be used to maintain a separation between magnets.
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: May 20, 2014
    Assignee: University of Florida Research Foundation, Inc.
    Inventors: David P. Arnold, Benjamin James Bowers
  • Publication number: 20140132089
    Abstract: Disclosed herein is a linear vibration motor. The present invention relates to improvement of a magnetic circuit system of the related art in which a magnet is disposed at a central part of an inner space through a yoke and a weight and a coil is disposed centered on the magnet. The linear vibration motor according to the present invention removes the yoke by disposing the weight at the central part of the inner space and horizontally disposing the magnet and the coil centered on the weight to maximally secure the inner space, thereby facilitating the increase in a volume of the magnet, maximizing electromagnetic force, and remarkably improving a response speed.
    Type: Application
    Filed: March 14, 2013
    Publication date: May 15, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventor: Young Jae JEON
  • Patent number: 8688345
    Abstract: An electric motor includes one or more separate coil sets arranged to produce a magnetic field of the motor. The electric motor also includes a plurality of control devices coupled to respective sub-sets of coils for current control. A similar arrangement is proposed for a generator. A coil mounting system for an electric motor or generator includes one or more coil teeth for windably receiving a coil for the motor and a back portion for attachably receiving a plurality of the coil teeth. A traction control system and method for a vehicle having a plurality of wheels independently powered by a respective motor. A suspension control system and method for a vehicle having a plurality of wheels, each wheel being mounted on a suspension arm of the vehicle and being independently powered by a respective motor.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: April 1, 2014
    Assignee: Protean Electric Limited
    Inventor: Martin Boughtwood
  • Patent number: 8680723
    Abstract: A linear actuator includes a stationary part, a movable part moveably supported by the stationary part, and at least one elastic member disposed between the movable part and the stationary part. The stationary part includes a stator core with a pair of teeth extending inwardly there from, and a winding wound on each of the teeth. The movable part disposed between the teeth includes two pairs of permanent magnetic poles respectively facing the teeth and an output shaft projecting in a first direction. When the windings are electrified, the stationary part generates a magnetic field which interacts with the permanent magnetic poles to reciprocate the movable part relative to the stationary part in a second direction perpendicular to the first direction.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: March 25, 2014
    Assignee: Johnson Electric S.A.
    Inventors: Arunkumar Subramanian, HongTao Wang, JinHui Huang
  • Patent number: 8680724
    Abstract: A linear generator has a fluid pressure cylinder structure for reciprocating a piston in a cylinder in the axial direction by applying alternately a fluid pressure in a left fluid pressure chamber in contact with the left end wall of the cylinder and a fluid pressure in a right fluid pressure chamber in contact with the right end wall of the cylinder to the piston. A permanent magnet band is formed between the left and right pressure receiving surfaces of the piston, and an electromotive coil band provided over the left and right fluid pressure chambers is formed on the cylindrical wall between the left and right end walls of the cylinder so that power generation in the electromotive coil band is induced by the reciprocating movement in the axial direction of the piston having the permanent magnet band.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: March 25, 2014
    Inventor: Takaitsu Kobayashi
  • Patent number: 8659176
    Abstract: A system for electromagnetically harvesting waste kinetic energy. A wound electrical coil having a hollow bobbin abuts an opening in ring magnet. An actuator plunger extends through the opening. Fixed magnets are located at the opposite end of the bobbin. Floating magnets are disposed within the bobbin, arranged with their magnetic field opposing that of the fixed magnets but not that of the ring magnet. Axial force on the actuator plunger moves the floating magnets toward the fixed magnets. When the actuator is released, the floating magnets are repelled by the fixed magnets and attracted by the ring magnet, causing the floating magnets to pass rapidly through the coil, thereby generating an electric current in the coil. In one application, the harvester is actuated by a keeper in a door latch release mechanism. In a second application the harvester is actuated by a latch bolt of a lock set.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: February 25, 2014
    Assignee: Hanchett Entry Systems, Inc.
    Inventor: Leland J. Hanchett, Jr.
  • Publication number: 20140042833
    Abstract: A linear vernier motor includes a stator and a mover. The stator extends in a first direction. The mover extends in the first direction and a pole interval is different from that of the stator. At least one of the stator and the mover includes: a plurality of permanent magnets arranged in the first direction and a plurality of yokes arranged in the first direction. Each of the plurality of yokes is arranged between adjacent permanent magnets. The plurality of permanent magnets is magnetized to the first direction and magnetization orientations of adjacent permanent magnets are opposite to each other.
    Type: Application
    Filed: May 16, 2012
    Publication date: February 13, 2014
    Inventors: Ryota Hiura, Katsuhiro Hirata, Hiroshi Ishiguro, Yoshihiro Nakata
  • Publication number: 20140026836
    Abstract: A housing is molded from a resin material, and a first flange portion of the bobbin forms a fusing protrusion, which is joined and fused with the housing. The housing includes through-holes, which are located on a radially inner side of the fusing protrusion and extends through a portion of the housing in the axial direction. A yoke includes at least one pressure reducing part, which is configured to reduce a pressure exerted to a projection of the bobbin by a flow of the resin material at a time of molding the housing.
    Type: Application
    Filed: July 30, 2013
    Publication date: January 30, 2014
    Applicant: DENSO CORPORATION
    Inventors: Koichiro MATSUMOTO, Yoshiyuki MURAO
  • Publication number: 20140014863
    Abstract: A direct acting solenoid actuator includes an armature and associated push pin that are suspended from certain fixed solenoid components, such as a pole piece and/or flux sleeve, by a fully floating cage of rolling elements. The fixed solenoid component may comprise a pole piece and/or a flux sleeve. The pole piece may include stops to limit movement of the cage of rolling elements in the axial direction.
    Type: Application
    Filed: July 11, 2013
    Publication date: January 16, 2014
    Inventors: Hamid NAJMOLHODA, Matthew S. Peterson
  • Patent number: 8610320
    Abstract: A linear generator has a fluid pressure cylinder structure for reciprocating a piston in a cylinder in the axial direction by applying alternately a fluid pressure in a left fluid pressure chamber in contact with the left end wall of the cylinder and a fluid pressure in a right fluid pressure chamber in contact with the right end wall of the cylinder to the piston. A permanent magnet band is formed between the left and right pressure receiving surfaces of the piston, and an electromotive coil band provided over the left and right fluid pressure chambers is formed on the cylindrical wall between the left and right end walls of the cylinder so that power generation in the electromotive coil band is induced by the reciprocating movement in the axial direction of the piston having the permanent magnet band.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: December 17, 2013
    Inventor: Takaitsu Kobayashi
  • Patent number: 8604647
    Abstract: A linear actuating device includes a track unit having an insulating sleeve made of non-metallic material and surrounding an axis, a plurality of coils mounted spacedly and sleevingly on the insulating sleeve along the axis, and a shell containing the insulating sleeve and the coils. The linear actuating device also includes a forcer unit having an elongate member extending through the insulating sleeve, having a segment configured for connecting to a vehicle shaft, and being movable along the axis relative to the insulating sleeve. The forcer unit also includes a plurality of magnets mounted spacedly relative to the axis and sleevingly on the elongate member.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: December 10, 2013
    Assignee: Automotive Research & Testing Center
    Inventors: Tsung-Hsien Hu, Chih-Jung Yeh
  • Publication number: 20130241320
    Abstract: An electromagnetic control device has a coil with a central axis and an interior space, and a control element that moves along the axis and is arranged at least partially within an interior space of the coil. The control element comprises an armature that axially moves to a desired position when the coil is energized. The coil is divided into at least two separate portions that are arranged axially behind one another and connected electrically in series with one another. An electric central tap is provided, between two adjacent coil portions, by which a sensor current, provided for determining an axial position of the armature, can be fed into a subset of the coil portions. When the armature is in a defined axial position, an axial end face of the armature is located within an axial area determined by an axial separation zone provided between two adjacent coil portions.
    Type: Application
    Filed: December 14, 2012
    Publication date: September 19, 2013
    Applicant: ZF Friedrichshafen AG
    Inventors: Florian WEINL, Michael LINDER
  • Publication number: 20130240642
    Abstract: A magnetic actuator includes: a coil, an internal pole, an armature, and a magnetic return path system having a magnetic return path element made from a material having a two-phase structure.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 19, 2013
    Applicant: Robert Bosch GmbH
    Inventors: Anna Salvat MASSONI, Joerg ABEL
  • Publication number: 20130236337
    Abstract: A magnetomotive device has an embedded electromagnetic coil formed of multiple printed conductor segments on multiple lamina of a multilayer PCB. A shaft extends through an opening in the PCB, and a permanent magnet with axially opposed poles is secured to the shaft. Energizing the embedded electromagnet generates a magnetic field that attracts or repels the permanent magnet, driving the shaft to do useful work. A pair of embedded PCB coils may be employed, the shaft extending through both coils with the permanent magnet disposed therebetween, and the coils energized so that one repels the permanent magnet while the other attracts it, and the shaft may be driven reversibly to do useful work.
    Type: Application
    Filed: February 23, 2013
    Publication date: September 12, 2013
    Inventors: Mark A. Gummin, Howard Cohen, William Donakowski
  • Patent number: 8450886
    Abstract: There is provided a linear vibrator including: a housing having an internal space formed therein; a magnetic field unit including a yoke disposed in the internal space and having a magnet and a magnet insertion part formed therein, and interacting with a coil to which power is applied to linearly move in the internal space, the magnet insertion part determining an insertion position of the magnet; and an elastic member disposed in a space between the housing and the magnetic field unit and elastically supporting linear movement of the magnetic field unit.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: May 28, 2013
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jong Hyun Yoon, Seung Hyeon Jeong, Joon Choi, Jun Kun Choi