With Relatively Movable Coil And Permanent Magnet (e.g., D'arsonval Type) Position On The Cathode Ray Tube) Patents (Class 335/222)
  • Patent number: 11705788
    Abstract: The present disclosure envisages an electromagnetic drive unit. The drive unit comprises a magnet having a north pole surface, a south pole surface, an operative top surface and an operative bottom surface. A coil having a pair of terminals is assembled on the magnet and hingeably coupled to the magnet, wherein a hingeable movement of the coil with respect to the magnet provides a reciprocating mechanical drive to the magnet. The hingeable movement of the coil is facilitated by providing an alternating supply to the pair of terminals of the coil. A hinge is provided on a base supporting the magnet for facilitating the pivotal movement of coil with respect to the magnet. A resilient band is provided adjacent the operative top surface of the magnet for securing the coil to the magnet.
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: July 18, 2023
    Inventor: Michael Robert Maurice
  • Patent number: 11255912
    Abstract: An electrical switching device including an input connection land, an output connection land, and a connection member that is capable of switching between a closed position allowing an electric current to flow between the input and output connection lands and an open position preventing the flow of the current between the input and output connection lands. The electrical switching device includes an accelerometer that is capable of measuring a component of an acceleration of the switching device when switching the connection member between the closed and open positions and a control configured to estimate, on the basis of an acceleration measurement signal delivered by the accelerometer, a duration of switching of the connection member between the closed and open positions, and to determine wear on the switching device on the basis of the estimated switching duration.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: February 22, 2022
    Assignee: Schneider Electric Industries SAS
    Inventors: Christophe Lapiere, Lionel Urankar
  • Patent number: 11218811
    Abstract: A loudspeaker and method of operating a loudspeaker are provided. The loudspeaker has a motor assembly with at least one planar coil. First and second magnets are magnetized in a magnetized direction perpendicular to a direction of coil movement and perpendicular to a central axis of radiation of the loudspeaker. The central axis of radiation is generally parallel to a direction of coil movement and parallel to the plane of the planar coil. The first and second magnets each have upper and lower large surface faces separated by a narrowest dimension. The first and second magnets are magnetized across the narrowest dimension in first and second magnetized directions being opposite.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: January 4, 2022
    Assignee: HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
    Inventors: Gilles Milot, Marc-Olivier Chauveau, Ludovic Fournier, Guenther Weber, Armin Prommersberger
  • Patent number: 11202516
    Abstract: A mattress made of natural latex foam has at least four layers. Each of the layers having a density that is different than the density of the adjacent layers. The mattress may also have on the first layer a plurality of magnets and infrared elements. The mattress may also have massage elements and/or a low frequency energy element between the second and third layers.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: December 21, 2021
    Inventor: Vanderlei Goncalves
  • Patent number: 11043888
    Abstract: Disclosed is a vibration motor including: a housing having an accommodating space, a first vibrator accommodated in the housing and having a coil, a first elastic component elastically supporting the first vibrator, and a circuit board electrically connected to outside. The first elastic component includes a first fixed portion, an elastic arm bending and extending from the first fixed portion, and a second fixed portion bending and extending from the elastic arm. The first elastic component includes substrate layers located on two sides and a damping layer sandwiched therebetween. A lead is disposed in the damping layer. The lead extends along the first elastic component and respectively extends out of the first and second fixed portion to form a first and second electrical conductive terminal. The first electrical conductive terminal is electrically connected to the circuit board. The second electrical conductive terminal is electrically connected to the coil.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: June 22, 2021
    Assignee: AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO., LTD.
    Inventors: Yun Tang, Lubin Mao
  • Patent number: 10716898
    Abstract: A device has a hollow guide shell including an injection end and a longitudinal axis. An actuator magnet is disposed in the hollow guide shell. An injection pin is coupled to the actuator magnet. A driver magnet is positioned on the device radially outward from the actuator magnet. A fluid cartridge is disposed in the injection end of the hollow guide shell, the fluid cartridge including a needle and a plunger. The driver magnet selectively exerts an injection force on the actuator magnet in a direction oriented towards the injection end of the hollow guide shell to engage the injection pin with the fluid cartridge. A liquid, gas or other agent can selectively be ejected from the cartridge by the device to inject the fluid, gas or other agent into another object.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: July 21, 2020
    Assignee: Dynamic Magnetics, LLC
    Inventor: Richard C. Paschal
  • Patent number: 10637340
    Abstract: A linear vibration generating device. The linear vibration generating device includes a vibrator including an annular magnet and a weight surrounding the magnet; a stator including a coil disposed at a center of the magnet and a yoke surrounding the coil; an elastic member disposed between the vibrator and the stator to elastically support the vibrator; and an anti-tilting unit coaxially coupled to a top of the yoke in a predetermined height. The anti-tilting unit is a non-magnetic body with a cylindrical shape having an outer diameter equal to or greater than a diameter of an outermost portion of the yoke and smaller than an inner diameter of the magnet.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: April 28, 2020
    Assignee: JAHWA electronics Co., Ltd.
    Inventors: Soon Koo Shim, Young Bin Chong, Nam Jin Choi
  • Patent number: 10637339
    Abstract: A linear vibration motor, comprising a motor housing, a stator, a vibrator and at least two sets of elastic support components which suspend the vibrator within the motor housing and which are used to support the vibrator and to provide elastic restoring force; the elastic support components are positioned between the inner wall of the motor housing and the vibrator, each set of elastic support components comprising at least two elastic supports; the elastic supports comprise each a first connection point fixedly connected to the vibrator and a second connection point fixedly connected to the inner wall of the motor housing; the structure of the elastic supports is such that same extends in a coiled manner in the direction of vibration of the vibrator, said linear vibration motor thereby providing a streamlined structure, and the elastic support components having a good vibratory effect so as to give users a favorable tactile experience.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: April 28, 2020
    Assignee: Goertek Inc.
    Inventors: Chunfa Liu, Fenglei Zu
  • Patent number: 10609496
    Abstract: Methods and apparatus are described herein related to improving the sound quality of a bone conduction speaker. The sound quality of the bone conduction speaker is adjusted in the sound generation, sound transferring, and sound receiving of the bone conduction speaker by designing vibration generation manners and vibration transfer structures.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: March 31, 2020
    Assignee: SHENZHEN VOXTECH CO., LTD.
    Inventors: Fengyun Liao, Jinbo Zheng, Qian Chen, Hao Chen, Xin Qi
  • Patent number: 10381144
    Abstract: Disclosed herein are linear actuators and haptic actuators for providing haptic output on an electronic device. In some embodiments, the linear actuator comprises two linear arrays of permanent magnets within and fixed to a housing. The linear arrays are arranged in parallel planes oriented toward, and located on opposites sides of, a moveable assembly comprising a shaft having a ferritic core. The shaft comprises a set of conducting coils, each conducting coil being located between a magnet from each of the two linear arrays. The linear actuator comprises a support mechanism that is attached to both the housing and to the moveable assembly and is configured to pivot. An electromagnetic force can arise from a current in the coils to cause the moveable assembly to move linearly between the two linear arrays.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: August 13, 2019
    Assignee: Apple Inc.
    Inventor: Brett W. Degner
  • Patent number: 10143802
    Abstract: A device has a hollow guide shell including an injection end and a longitudinal axis. An actuator magnet is disposed in the hollow guide shell. An injection pin is coupled to the actuator magnet. A driver magnet is positioned on the device radially outward from the actuator magnet. A fluid cartridge is disposed in the injection end of the hollow guide shell, the fluid cartridge including a needle and a plunger. The driver magnet selectively exerts an injection force on the actuator magnet in a direction oriented towards the injection end of the hollow guide shell to engage the injection pin with the fluid cartridge. A liquid, gas or other agent can selectively be ejected from the cartridge by the device to inject the fluid, gas or other agent into another object.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: December 4, 2018
    Assignee: DYNAMIC MAGNETICS, LLC
    Inventor: Richard C. Paschal
  • Patent number: 10097075
    Abstract: A linear actuator for linearly positioning a recording head in a data storage mechanism. The disclosed linear actuator includes an electrically conductive coil having first and second parts that are both wound in the same rotary direction about an axis, and a magnet spaced from the electrically conductive coil by an air gap. Transmission of an electric current through the first part of the electrically conductive coil in a first current flow direction about the axis and through the second part of the electrically conductive coil in an opposite second current flow direction about the axis induces linear movement of one of the electrically conductive coil and magnet relative to the other of the electrically conductive coil and magnet.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: October 9, 2018
    Assignee: Oracle International Corporation
    Inventors: Darryl Wayne Yeakley, Frank A. Goodknight
  • Patent number: 10095310
    Abstract: An input apparatus includes an input device, a support device, a reaction force generator and an adjustment structure. The reaction force generator includes a magnetic pole formation part, a coil, and a magnetic flux induction part, and that exerts electromagnetic force, which is generated by an application of current to the coil, on the input device as operation reaction force in a direction along the operation plane. The adjustment structure causes pressing force to increase or decrease in a direction where the input device intersects the operation plane by adjusting a total of magnetic attraction force obtained by the magnetic pole formation part attracting the magnetic flux induction part.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: October 9, 2018
    Assignee: DENSO CORPORATION
    Inventor: Shinsuke Hisatsugu
  • Patent number: 9866981
    Abstract: A micro speaker is disclosed. The micro speaker includes a vibration system including a diaphragm and a voice coil for driving the diaphragm, the diaphragm including a conductive dome and a suspension surrounding the conductive dome; a magnetic circuit system including a lower plate, a first magnetic part on the lower plate, a second magnetic part on the lower plate, a pole plate attached to the first magnetic part, one of the first and second magnetic part being a permanent magnet for forming a magnetic gap. The conductive dome includes a number of units for forming capacitors together with the pole plate for outputting electrical signals according to vibrations of the diaphragm and for detecting real-time replacement of the diaphragm.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: January 9, 2018
    Assignee: AAC TECHNOLOGIES PTE. LTD.
    Inventor: Yang Zhang
  • Patent number: 9866982
    Abstract: A micro speaker is disclosed. The micro speaker includes a vibration system including a diaphragm and a voice coil for driving the diaphragm, the diaphragm including a conductive dome a suspension surrounding the conductive dome; a magnetic circuit system including a lower plate, a first magnetic part on the lower plate, a second magnetic part on the lower plate, a pole plate attached to the first magnetic part and including a plurality of units, one of the first and second magnetic part being a permanent magnet for forming a magnetic gap; capacitors formed by the conductive dome and the units of the pole plate for outputting electrical signals according to vibrations of the diaphragm and for detecting real-time replacement of the diaphragm.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: January 9, 2018
    Assignee: ACC TECHNOLOGIES PTE. LTD.
    Inventor: Yang Zhang
  • Patent number: 9859778
    Abstract: An energy harvesting device comprises a semiconductor device, and a first magnet core. The semiconductor device, disposed in a housing, includes planar inductors. The first magnet core, having a first surface over the planar inductors, is configured to move with respect to the semiconductor device in a first direction that reduces a first vertical distance between the plane and the first surface.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: January 2, 2018
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: En-Hsiang Yeh, Monsen Liu, Chuei-Tang Wang
  • Patent number: 9826326
    Abstract: A micro speaker is disclosed. The micro speaker includes a vibration system including a diaphragm and a voice coil for driving the diaphragm, the diaphragm including a conductive dome a suspension surrounding the conductive dome; a magnetic circuit system including a lower plate, a first magnetic part on the lower plate, a second magnetic part on the lower plate, a pole plate attached to the first magnetic part, one of the first and second magnetic part being a permanent magnet for forming a magnetic gap; a capacitor formed by the conductive dome and the pole plate for outputting electrical signals according to vibrations of the diaphragm and for detecting real-time replacement of the diaphragm.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: November 21, 2017
    Assignee: AAC TECHNOLOGIES PTE. LTD.
    Inventor: Yang Zhang
  • Patent number: 9607490
    Abstract: There is provided a haptic device including a small-size haptic unit. The haptic device includes a weight, a magnet fixed to the weight, a coil that generates a magnetic field to reciprocate the magnet along a predetermined direction, and a current control unit that presents a haptic sensation to a user by controlling a current flowing in the coil to vibrate the weight.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: March 28, 2017
    Assignees: Sony Corporation, Sony Interactive Entertainment Inc.
    Inventors: Hiroshi Osawa, Takeshi Yamagishi
  • Patent number: 9423609
    Abstract: An actuator includes: a movable plate; a first axial member adapted to swingably support the movable plate around a first axis; a reflecting section fixed to the movable plate, and having a reflecting surface adapted to reflect light; and a coil disposed on an opposite surface of the reflecting section to the reflecting surface.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: August 23, 2016
    Assignee: Seiko Epspon Corporation
    Inventors: Emi Mizuno, Yasushi Mizoguchi
  • Patent number: 9407184
    Abstract: An energy harvesting device comprises a semiconductor device, a first magnet core, and at least one second magnet core. The semiconductor device, disposed in a housing, includes a plurality of first sensors and a plurality of second sensors. The first magnet core, disposed over the semiconductor device, is configured to establish a magnetic field between the first sensors and move with respect to the semiconductor device. The at least one second magnet core, disposed between an inner wall of the housing and the semiconductor device, is configured to establish a magnetic field between the second sensors and move with respect to the semiconductor device.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: August 2, 2016
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: En-Hsiang Yeh, Monsen Liu, Chuei-Tang Wang
  • Patent number: 9348043
    Abstract: An apparatus and a method for detecting vibration are disclosed. The apparatus comprises a housing, a magnetic structure forming a magnetic field in the housing, and a coil structure in the magnetic field, concentric of the magnetic structure. In response to external vibration, the coil structure and the magnetic structure are movable with respect to each other. The coil structure comprises at least two sets of coils overlapped in space, of which a first coil set is for detecting vibration and a second coil set is for applying control in accordance with a control signal.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: May 24, 2016
    Assignee: SAS E&P LTD.
    Inventors: Zhentang Fu, Chunhua Gao, Du Chen
  • Patent number: 9238251
    Abstract: An apparatus and a method for detecting vibration are disclosed. The apparatus comprises a housing, a magnetic structure forming a magnetic field in the housing, and a coil structure in the magnetic field, concentric of the magnetic structure. In response to external vibration, the coil structure and the magnetic structure are movable with respect to each other. The coil structure comprises at least two sets of coils overlapped in space, of which a first coil set is for detecting vibration and a second coil set is for applying control in accordance with a control signal.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: January 19, 2016
    Assignee: SAS E&P Ltd.
    Inventors: Zhentang Fu, Ming Zhou, Biao Guo, Jiaen Song, Hailong Wang, Qiang Ma, Qiang Guo
  • Patent number: 9214267
    Abstract: An electromagnetic actuator device, comprising a coil unit, which surrounds a first yoke section of a stationary yoke unit and is activated by energizing the coil unit, and armature elements, which are guided so as to be movable relative to the yoke unit and which interact with an output-side actuating partner and are driven in order to perform an actuating movement, the armature elements interact with at least one second yoke section of the yoke unit to form an air gap lying outside of the first yoke section for a magnetic flux produced by the activated coil unit.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: December 15, 2015
    Assignee: ETO Magnetic GmbH
    Inventors: Raphael Bory, Jonas Boll, Daniela Haerter, Robert Steyer, Philipp Terhorst, Thomas Schiepp, Markus Laufenberg
  • Patent number: 9201528
    Abstract: The disclosure relates to a method of manufacturing vibratory elements, comprising forming on a substrate a multilayer structure by an integrated circuit manufacturing method, the multilayer structure comprising an element susceptible of vibrating when it is subjected to an electrical signal, and electrodes for transmitting an electrical signal to the vibratory element, the vibratory element comprising a mechanical coupling face that is able to transmit to control element vibrations perceptible by a user.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: December 1, 2015
    Assignees: STMicroelectronics SA, STMicroelectronics (Grenoble 2) SAS
    Inventors: Cedrick Chappaz, Pascal Ancey, Yves Gilot, Serge Laffont, Olivier Girard
  • Patent number: 9059625
    Abstract: A linear vibration device may comprise a stator assembly including a plate and a case, and a vibrator assembly including a yoke and a spring. The case of the stator assembly and the spring of the vibrator assembly may be coupled to each other. The case may be provided with a protrusion, the spring may be provided with a groove, and the protrusion and the groove may be coupled to each other.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: June 16, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Jung Taek Hong
  • Patent number: 8774430
    Abstract: A linear interleaved magnetic motor in which the B-field flows between a plurality of motor cell elements, creating a long, serpentine gap. The motor is used with at least one flex circuit as a drive coil. The motor can be used as a drive motor for a loudspeaker transducer. Multiple loudspeaker transducers can be connected together to make a loudspeaker frame or system.
    Type: Grant
    Filed: December 2, 2012
    Date of Patent: July 8, 2014
    Inventor: Thomas Paul Heed
  • 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: 8682396
    Abstract: Disclosed is a vibration module for a portable terminal that includes a housing, a magnetic moving part movable in a first direction within the housing; an elastic member supported between the opposite ends of the magnetic moving part and inner walls of the housing, and a solenoid coil provided in the housing. The vibration module is positioned at one end of the moving section by the magnetic force of the magnetic moving part and an object around the magnetic moving part, allowing the vibration module to provide a user with a feeling similar to a click feeling via the acceleration produced at a stopping instant. In addition, when vibrating, the vibration module generates sufficient vibration power through acceleration at the instant of changing moving direction at the ends of the moving section, to provide an alarm function, such as an incoming call notification.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: March 25, 2014
    Assignees: Samsung Electronics Co., Ltd, Korea Advanced Institute of Science and Technology
    Inventors: Tae-Heon Yang, Yu-Dong Bae, Dong-Soo Kwon, Young-Min Lee, Eun-Hwa Lee, Jeong-Seok Lee, Dong-Bum Pyo, Young-Jun Cho
  • Patent number: 8575878
    Abstract: An energy converter includes a magnetism generation mechanism unit that generates a magnetic field when connected to an AC electrical power source, and a rotating mechanism unit having a single turn coil array member in which a plurality of single turn coils is disposed at a predetermined interval and a soft magnetic metal plate disposed on a side of the single turn coil array member opposite to the magnetism generation mechanism unit. The rotating mechanism unit is structured such that the single turn coil array member faces the magnetism generation mechanism unit across a predetermined magnetic gap and rotary driven by the magnetic field. Here, a drive signal period of the electrical power source is a period that maximizes an eddy current generated in the soft magnetic metal plate.
    Type: Grant
    Filed: November 26, 2009
    Date of Patent: November 5, 2013
    Assignee: TBK Co., Ltd
    Inventors: Tetsuo Sekiya, Kiyotsugu Narita
  • Patent number: 8531062
    Abstract: A linear motor includes an assembly of three magnets in series coaxially affixed inside of a housing, which results in an air gap therebetween, wherein the assembly includes a middle magnet whose direction of magnetization is opposite to that of the rest of the magnets. 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. The carrier is movably positioned into the air gap and further surrounds the assembly, thereby moving along an axial direction of the motor. A second embodiment includes two coils that are 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: September 10, 2013
    Assignee: Moticont
    Inventors: Fariborz Aaron Eghbal, Joseph Benjamin Hanukaai, Vahid David Hannani
  • Patent number: 8497754
    Abstract: The electromagnetic actuator is a linear electromagnetic actuator in which the relative position between a slide table that supports permanent magnets thereon and a guide rail that supports a coil, which is arranged in confronting relation to the permanent magnets, is displaced by means of a thrust force generated by a current flowing through the coil. The coil is disposed on the guide rail through a low coercive force magnetizable material body, the coercive force of which is lower than a predetermined value. Consequently, generation of residual magnetization can be suppressed, and an influence on the thrust force caused by such residual magnetization can also be suppressed.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: July 30, 2013
    Assignee: SMC Kabushiki Kaisha
    Inventors: Nobuhiro Fujiwara, Hisashi Yajima
  • Patent number: 8421564
    Abstract: The electromagnetic actuator is a linear electromagnetic actuator in which the relative position between a slide table that supports permanent magnets thereon and a guide rail that supports a coil, which is arranged in confronting relation to the permanent magnets, is displaced by means of a thrust force generated by a current flowing through the coil. The coil is disposed on the guide rail through a low coercive force magnetizable material body, the coercive force of which is lower than a predetermined value. Consequently, generation of residual magnetization can be suppressed, and an influence on the thrust force caused by such residual magnetization can also be suppressed.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: April 16, 2013
    Assignee: SMC Kabushiki Kaisha
    Inventors: Hisashi Yajima, Nobuhiro Fujiwara
  • Patent number: 8415838
    Abstract: A linear motor includes an assembly of two or more sets of magnets and pole pieces wherein the assembly is coaxially affixed inside of a housing, which results in an air gap therebetween. The magnets are positioned so that each magnet has opposite directions of magnetization relative to its adjacent magnet. The embodiment of the motor includes a coil carrier having a single electrical coil of two or more sections with each section wound in the opposite direction to the adjacent section and positioned into the corresponding 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 when electricity is applied to the coil.
    Type: Grant
    Filed: July 19, 2010
    Date of Patent: April 9, 2013
    Assignee: MOTICONT
    Inventors: Fariborz Aaron Eghbal, Joseph Benjamin Hanukaai, Vahid David Hannani
  • Patent number: 8360392
    Abstract: A valve control device, in particular for control pods or similar equipment used in the mining and/or production of mineral oil/natural gas, comprises a valve housing in which hole or boring sections are arranged, and a valve slide movable relative to the hole sections, with at least a first and a second flow hole for the alternative connection of a feed line from a fluid pressure hose with at least one actuator or of the actuator to return line for leading the fluid away, wherein in each case one of the connections is made and the other is interrupted.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: January 29, 2013
    Assignee: Cameron International Corporation
    Inventors: Klaus Biester, Peter Kunow
  • Patent number: 8339224
    Abstract: A vibration device according to an embodiment of the present invention includes upper and lower cases combined with each other to form a case, a magnetic force generating unit provided on at least one surface of the upper and lower cases, a vibrating unit including at least one magnet disposed to be opposite to the magnetic force generating unit, and a weight, and at least one elastic unit configured to support the vibrating unit elastically, the elastic unit having a first portion directly contacting the upper case and a second portion contacting the vibrating unit. Further, the first portion is arranged on a first circumference and the second portion is arranged on a second circumference, and wherein a diameter of the first circumference is larger than a diameter of the second circumference.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: December 25, 2012
    Assignee: LG Innotek Co., Ltd.
    Inventor: Sang Jin Kim
  • Patent number: 8218956
    Abstract: A driving system is provided. The driving system includes a fixed substrate, a coil unit which generates an electromagnetic force if an electric current applied, a magnet unit formed on the fixed substrate to face the coil unit, and a plurality of driving units which are interconnected with each other on the fixed substrate, and which are moved respectively in parallel direction with respect to a surface of the fixed substrate in accordance with an interaction between the electromagnetic force and a magnetic force of the magnet unit, if the electric current is applied. As a result, a non-contact driving is provided.
    Type: Grant
    Filed: April 22, 2008
    Date of Patent: July 10, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hee-moon Jeong, Sung-hee Lee
  • Patent number: 8183720
    Abstract: A magnetic circuit system includes a T-shaped yoke, a magnet, and a top plate. The top plate has a center hole, an internal end around the center hole thereof, and two projecting elements provided separately on upper surface and lower surface of the internal end, which improves non-linear distortion of a transducer using the magnetic circuit system.
    Type: Grant
    Filed: January 30, 2010
    Date of Patent: May 22, 2012
    Assignees: AAC Acoustic Technologies (ShenZhen) Co. Ltd., American Audio Components Inc.
    Inventor: Xu-Dong Yan
  • Patent number: 8174345
    Abstract: A vibration generator 1 has an attachment structure of a spring by which the attachment error of the spring elastically supporting a mover composed of a magnet and a yoke does not become the error of the span of the spring to make it possible to improve the ease and yield of manufacture. The vibration generator 1 includes a mover which is composed of a magnet 5 and yokes 4, 7a and 7b, and a spring 6 which is composed of an integrally molded article made of an elastomeric material and elastically supports the mover to allow the mover to vibrate in the central axis direction C. The spring is arranged on the outside of a coil 3 in a radial direction thereof and extends along the radial direction.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: May 8, 2012
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Masaharu Kagami, Kazutaka Sakaguchi, Yuki Takahashi, Shigenori Inamoto
  • Patent number: 8174344
    Abstract: First and second projections are formed to protrude toward a guide rail from both sides of a slide table. Third and fourth projections are formed to protrude toward the slide table from both sides of the guide rail. A plurality of balls are arranged in clearances between the first and second projections and the third and fourth projections.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: May 8, 2012
    Assignee: SMC Kabushiki Kaisha
    Inventors: Hisashi Yajima, Nobuhiro Fujiwara
  • Patent number: 8134438
    Abstract: The present invention is directed to an inductively driven electromagnetic linear actuator arrangement employing eddy currents induced in an armature by a drive coil to drive the armature. Eddy current focusing fields (Lorentz force) are employed to direct the induced eddy currents to maximize armature speed. The armature includes a shorted driven coil in a DC magnetic field that focuses eddy currents induced by the drive coil in the driven coil. The DC magnetic field can be supplied by one or more permanent magnets. When current is applied to the drive coil, a force is felt by the driven coil in a direction perpendicular to the magnetic field, causing armature movement. Such an actuator is well suited for electrical switching applications including transfer switching applications, circuit breaker applications, and ground fault interrupter applications.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: March 13, 2012
    Assignee: PowerPath Technologies LLC
    Inventor: Elliot Brooks
  • Patent number: 8134437
    Abstract: The present invention is directed to an inductively driven electromagnetic linear actuator arrangement employing eddy currents induced by a fixed drive coil to drive its armature. Eddy current focusing fields are employed to direct the eddy currents using Lorentz forces to maximize armature speed. The armature includes a shorted driven coil in a DC magnetic field. This can be supplied by a permanent magnet. When current is applied, a force is felt by the coil in a direction perpendicular to the magnetic field. Such an actuator is well suited for electrical switching applications including transfer switching applications, circuit breaker applications, and ground fault interrupter applications.
    Type: Grant
    Filed: May 20, 2006
    Date of Patent: March 13, 2012
    Assignee: PowerPath Technologies LLC
    Inventor: Elliot Brooks
  • Patent number: 8129870
    Abstract: An asymmetric folded spring flexure suspension system can enable an ultra-compact linear reciprocative device wherein a reciprocative mass suspended from a base by a single folded flexure assembly extends in a single generally radial direction perpendicular to the intended travel path. The folded flexure assembly can be configured as three side-by-side stacks of flexure strips of spring material, tied together at a “yoke-idler” end; at the opposite “working” end, a central stack of nominal width is tied to the mass, and, flanking the central stack, a pair of half-width stacks are tied to opposite sides of the base. In an embodiment for active vibration control, a cylindrical enclosure, of magnetically-permeable material and attached to the working end of the flexure assembly, contains a driver system including an internally-mounted pair of permanent magnets that provide a magnetic flux gap and also constitute the main portion of the mass.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: March 6, 2012
    Inventor: Kenneth E. Pusl
  • Publication number: 20110257626
    Abstract: A needle-free transdermal transport device for transferring a substance across a surface of a biological body includes a reservoir for storing the substance, a nozzle in fluid communication with the reservoir and a controllable electromagnetic actuator in communication with the reservoir. The actuator, referred to as a Lorentz force actuator, includes a stationary magnet assembly and a moving coil assembly. The coil assembly moves a piston having an end portion positioned within the reservoir. The actuator receives an electrical input and generates in response a corresponding force acting on the piston and causing a needle-free transfer of the substance between the reservoir and the biological body. The magnitude, direction and duration of the force are dynamically controlled (e.g., servo-controlled) by the electrical input and can be altered during the course of an actuation cycle. Beneficially, the actuator can be moved in different directions according to the electrical input.
    Type: Application
    Filed: October 18, 2010
    Publication date: October 20, 2011
    Applicant: Massachusetts Institute of Technology
    Inventors: Ian W. Hunter, Andrew J. Taberner, Brian D. Hemond, Dawn M. Wendell, Nora Catherine Hogan, Nathan B. Ball
  • Patent number: 8022799
    Abstract: A magnetic circuit unit includes a pole piece, a magnet, and a yoke and a suspension made of a magnetic material. A magnetic gap is formed between an inner circumferential side surface of the suspension and a circumference of the pole piece. Accordingly, it is possible to allow the magnet in the magnetic circuit unit to be thinly constructed. In addition, it is possible to implement a multi-function vibration actuator having a thin structure and capable of obtaining a sufficiently sensible vibration.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: September 20, 2011
    Assignee: Namiki Seimitsu Houseki Kabushiki Kaisha
    Inventors: Minoru Ueda, Shoichi Kaneda, Kenji Ueno
  • Patent number: 7932797
    Abstract: An electromagnetic drive includes a drive plate disposed in a magnetic field. The drive plate includes a non-conductive medium with a first plurality of linear conductive elements arranged parallel to a first axis. The first plurality of linear conductive elements connects first and second electrical terminals supported by the non-conductive medium. The drive plate may be driven in the magnetic field along a second axis that is substantially perpendicular to the first axis when an electrical current of sufficient magnitude is passed through the first plurality of linear conductive elements.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: April 26, 2011
    Assignee: Harman Becker Automotive Systems GmbH
    Inventors: Tsuneo Suzuki, Rolf Dupper
  • Patent number: 7924127
    Abstract: An electromagnetic force driving actuator and a circuit breaker using the same is disclosed. The actuator comprises a casing that forms two paths having a certain length in longitudinal direction, and forms a middle wall by the two paths; a main magnetic field generation element that is allocated on the both face wall of the two paths of the casing; and a moving element that, as the middle wall is located in the center, a coil, which is bound in the orthogonal direction to longitudinal direction of the paths, is in a body that its left and right sides passes through the paths and its front and back side are exposed to outside, when forward direction or reverse direction current is provided in the coil, moves forward and backward along the longitudinal direction of the paths.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: April 12, 2011
    Assignee: Ematech Inc.
    Inventors: Hyun-Kyo Jeong, Jong-Ho Kang
  • Patent number: 7889037
    Abstract: A low friction and stable sliding structure for an electronic device is provided. The sliding structure includes a first sliding member comprising at least one guide portion, a second sliding member including a receiving portion receiving the guide portion so as to slide along the first sliding member, a first magnet portion disposed in the guide portion, such that magnetic poles of the first magnet portion are arranged across a sliding direction, and a second magnet portion disposed in the receiving portion so that a repulsive force can act between the first magnet portion and the second magnet portion.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: February 15, 2011
    Assignee: Samsung Techwin Co., Ltd.
    Inventor: Se-hoon Cho
  • Publication number: 20100308244
    Abstract: A liner solenoid comprising: liner solenoid portion, comprising: a coil; a cylindrical movable core which is attracted toward a fixed core when the coil is energized; and a cylindrical yoke which surrounds an outer circumference surface of the movable core, wherein the movable core has a shaft-less structure, a first plain bearing and a second plain bearing for slidably supporting both ends of the movable core are provided respectively at both ends of a cylindrical yoke along its axis, and the first plain bearing and the second plain bearing are provided to be projected from the inner circumference surface of the cylindrical yoke by a predetermined length T toward the movable core.
    Type: Application
    Filed: May 10, 2010
    Publication date: December 9, 2010
    Applicant: KEIHIN CORPORATION
    Inventors: Naoki OIKAWA, Shigeto Ryuen, Takashi Yokoyama
  • Patent number: 7834726
    Abstract: A small balancer coil for cold-cathode florescent lamps having sufficient shunt/balance effects, comprises a discharge lamp, a conductor located close to the discharge lamp, and two coils whose magnetic fluxes face each other. The magnetic fluxes generated in the coils face and cancel each other. Lamp currents of the discharge lamps are balanced by making the sum of the reactances of the mutual inductance of the balancer coil larger than the negative resistance of the discharge lamp. Section winding is applied to each coil of the balancer coil so as to maintain shunt and balance effects even in a small/flat balancer coil by making self-resonance frequency of each of the coils higher.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: November 16, 2010
    Assignees: Hong-Fei Chen
    Inventor: Masakazu Ushijima
  • Patent number: 7777600
    Abstract: The present invention is directed to an inductively driven electromagnetic linear actuator arrangement employing eddy currents induced by a fixed drive coil to drive its armature. Eddy current focusing fields are employed to direct the eddy currents using Lorentz forces to maximize armature speed. The armature includes a shorted driven coil in a DC magnetic field. This can be supplied by a permanent magnet. When current is applied, a force is felt by the coil in a direction perpendicular to the magnetic field. Such an actuator is well suited for electrical switching applications including transfer switching applications, circuit breaker applications, and ground fault interrupter applications.
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: August 17, 2010
    Assignee: PowerPath Technologies LLC
    Inventor: Elliot Brooks