US3928988A - Magnetic control device for yarn guides - Google Patents

Magnetic control device for yarn guides Download PDF

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Publication number
US3928988A
US3928988A US387517A US38751773A US3928988A US 3928988 A US3928988 A US 3928988A US 387517 A US387517 A US 387517A US 38751773 A US38751773 A US 38751773A US 3928988 A US3928988 A US 3928988A
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United States
Prior art keywords
magnetic
yarn guides
yarn
movable component
stationary
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Expired - Lifetime
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US387517A
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English (en)
Inventor
Claus-Peter Luth
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LUTH CLAUS PETER
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LUTH CLAUS PETER
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/14—Pivoting armatures
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/54—Thread guides
    • D04B15/58—Thread guides for circular knitting machines; Thread-changing devices

Definitions

  • Circular hosiery knitting machines are equipped with a plurality of yarn guides, each of which is selectively movable into and out of yarn feeding position at selected intervals depending on the programming of the machine to knit a desired pattern.
  • yarn guides There are conventionally several yarn guides at each feed station, the number of yarn guides at each feed station depending upon the intended capability of the knitting machine to vary the patterns and structures to be knit thereon.
  • multifeed knitting machines that is circular knitting machines having a plurality of yarn feeds spaced circumferentially around the needle cylinder.
  • the conventional needle cylinder on circular hosiery knitting machines is four inches in diameter and consequently the space on the machine is very limited, particularly when as many as twelve feed stations are employed.
  • each yarn guide is pivotally mounted on the frame of the machine adjacent the cylinder and is movable, usually downwardly, to direct yarn from a source of supply to the knitting needles as they move past the yarn feed station.
  • a separate yarn guide is providedfor each type of yarn to be used at a given feed station and the two-directional movement of each yarn guide from an upward inactive position to a lower active position is controlled through mechanical linkage by a pattern drum, or in some cases by an electronic control device.
  • the mechanical linkage is often cumbersome, occupying valuable space.
  • Another object of the invention is to provide said magnet and electrical coils on and in close proximity to the yarn guide and to connect the electric coils to a source of electrical energy with wiring which occupies a minimum of space.
  • a control device including a stationary portion comprising two opposed and symmetric magnetic circuit fixed components, designed to cooperate alternately with a third magnetic circuit component mounted or formed on a movable portion and arranged to establish the closure of a magnetic circuit on the one or on the other of the fixed components according to the position assumed by the movable portion.
  • Means are provided to establish a constant magnetic bias in said magnetic circuit in order to stabilize the position of the movable portion against one or the other of said fixed components of the magnetic circuit, namely, by magnetic attraction.
  • a permanent magnet serves to generate the constant magnetic bias but the use of a constantly energized electromagnet is not excluded.
  • Solenoid means are so arranged that, when energized, the polarity of 'a magnetic component is reversed to create a magnetic repulsion effect between one of said fixed components and the movable component which is magnetically lodged against said fixed component and thus to repel the movable component away from said one fixed component.
  • the two fixed and symmetric components of the magnetic circuit include respective windings, each of which is designed to generate when energized by current a magnetic field of repulsion of the movable component having a constant magnetic polarization or bias.
  • the means to generate a constant magnetic bias may be borne by the movable component.
  • the means to generate a constant magnetic bias may be borne by a fixed element, which forms one or more pairs of symmetric branches forming the fixed components, the movable component being pivotally linked to said element.
  • the yarn guides may be provided with a permanent magnet (or the like) arranged alternatively on one side and on the other side of the common linkage, to cooperate with corresponding pairs of fixed components.
  • FIG. 1 is a schematic elevation of the invention wherein a yarn guide is the movable component arranged between the two fixed magnetic circuit components and wherein the fixed components are between the tip of the yarn guide and its pivot point;
  • FIG. 2 is a view similar to FIG. 1 but showing the pivot point between the fixed components and the tip of the yarn guide;
  • FIG. 3 perspectively illustrates an arrangement of the permanent magnets with several. yarn-guides placed side by side;
  • FIG. 4 is a schematic elevation of a fourth embodiment wherein the two fixed components are formed by a single ferromagnetic element
  • FIG. 5 is a perspective schematic of a fifth embodiment with two yarn-guides placed side by side.
  • each yarn-guide comprises an elongated yarn finger or rod 1 of non-magnetic material pivotally mounted to the frame of a knitting machine, not shown, by a pivot pin 2 and arranged to reciprocate between the active yarn feeding position shown in solid lines and the raised inactive position shown by the dot-dash lines.
  • the yarn guide includes an eyelet 3 at its operative end through which yarn passes from a source of supply to the knitting needles, not shown.
  • the rod 1 of i the yarn-guide carries a permanent magnet 4 closely adjacent the pivot point 2, the magnet 4 including poles 4N and 48 of opposite polarity.
  • FIG. 1 the magnet 4 is located between pivot point 2 and eyelet 3, while in the embodiment of FIG. 2 the magnet is arranged between the pivot point 2 and the end of the rod opposite the eyelet 3.
  • Fixed magnetic components 5 and 6 form U-shaped stops of ferromagnetic material, and-also include coil cores 7 and 8 which form drive solenoids, receptive of electrical energization and de-energization, or of energizations alternatively in two directions to reverse the polarity at the ends of the U-stops.
  • the operational principle is essentially based on the mutual attraction property of magnetic poles. having opposite polarity and on the mutual repulsion property of magnetic poles having the same polarity.
  • a suitable electric current is sent into the solenoid 8 in the direction wherein the polarity of the stops 6 extending from the ferromagnetic core within coil 8 is changed to the same as that of the poles 4N and 4S of permanent magnet 4, thereby repelling rod 1 and moving it away from stop 6 and toward stop 5 to the inactive position of the yarn guide.
  • coil 7 can be energized in such a manner as to charge its poles 5 with the opposite polarity of that present in the poles 4N and 4S of permanent magnet 4.
  • the two electromagnets 6,8 and 5,7 may be simultaneously energized, in such a manner as to respectively and simultaneously repel and attract the permanent magnet 4.
  • rod 1 ismoved from the position shown in FIGS. 1 and 2 to the opposite'position shown by the dot-dash lines wherein the magnetic 4 is retained against the unit 5,7.
  • the rod 1 is returned to its original position agains stops 6.
  • FIG. 3 a multiple yarn-guides arrangement is shown, with rods 1A, 1B, 1C and 1D pivoted on a common axis 2X.
  • the associated permanent magnets 4A, 4B, 4C, 4D are alternately arranged on opposite sides of the pivot point of their respective rods in the positions of FIGS. 1 and 2, respectively.
  • Their associated electromagnets are correspondingly arranged, there being shown in FIG. 3 only those denoted by 5A, 6A of the yarn-guide rod 1A, 5B and 6B of the rod 18, the one 6C of the rod 1c, and the one 50 of the rod 1D, the other electromagnets being omitted from FIG. 3 for purposes of clarity.
  • the rods of the yarnguides may be closely spaced together and the assembly of multiple yarn-guides desirably compact.
  • a permanent magnet 11 is pivotally connected to a keeper 12 made up of ferromagnetic material and polarized by the magnet 11.
  • Keeper 12 supports the finger or rod of guide 14 and its eyelet 14A.
  • a ferromagnetic element 15 bearing two arms 15A, 15B of the same material is polarized by the magnet 11.
  • the arms 15A, 15B serve as cores for two drive solenoid coils 16A and 16B wound on said arms 15A and 15B.
  • the operational principle is essentially based on the mutual attraction property ofmagnetic poles having an opposite polarity and of repulsion of magnetic poles having the same polarity andon the possibility of neutralizing a first magnetic field with a field generated with an opposite direction by means of a winding on the same ring on which said first magnetic field is induced.
  • a suitable electric current is sent through the solenoid 16B in such a direction as to create on the arm 158 the same polarity'and at least of the same intensity as the polarity present in the keeper.
  • a repulsion force is created between the arm 15B and the keeper 12, causing keeper 12 to pivot upwardly in FIG. 4 toward arm 15A.
  • a suitable electric current is sent through the solenoid 16B in such a direction as to create on the arm 158 the same polarity'and at least of the same intensity as the polarity present in the keeper.
  • a suitable electric current may be sent into the solenoid 16A in such a direction as to reinforce the polarity in arm 15A which is opposite the polarity of the keeper, and thereby increasing the control action on the keeper and thus on the yarn-guide, to change the position.
  • FIG. 5 shows an arrangement of two yarn-guides, with single permanent magnet 21 which induces a polarity on two distinct keepers 22A, 22B coaxially linked by pivot pin 23 and bearing respectively yarn-guide rods 24A, 24B.
  • the opposite polarity is'induced by the magnet 21 to an element 25 which forms two pairs of arms A, 225A, and 1258, 225B designed to cooperate with the two keepers 22A and 22B, respectively.
  • windings 126 and 226 on said arms of the element 25, energized for each pair of arms as alreadydescribed, allows independent control of the two yarn-guides according to a desired program.
  • the invention is capable-of being varied in form and. arrangement without departing from the concept of the invention.
  • a permanent magnet instead of'a permanent magnet one may use a constantly energized electromagnet.
  • a magnetic control device operatively connected withsaid yarn guides and responsive to electrical'energization to selectively actuate said yarn guides
  • said magnetic control device comprising a movable component and two stationary components, characterized in that it includes: on each said stationary component, two opposite and symmetric magnetic circuit components designed to alternately cooperate with a magnetic circuit formed on the movable component in such a manner as to establish the closure of a magnetic circuit on one of the stationary components according to the position assumed by the movable component; means to establish a constant magnetic polarization in said magnetic circuit on the movable component in order to stablize the position of said movable component against one of the stationary components of the magnetic circuit by effect of magnetic attraction, and solenoid means arranged to reverse the polarity to create a magnetic repulson effect between one of said stationary components and the movable component which is located against said stationary
  • a circular knitting machine having a needle cylinder and a plurality of yarn guides arranged about said cylinder and selectively movable into and out of operative positions
  • the combination of magnetic control means operatively connected with said yarn guides and responsive to electrical energization to selectively actuate said yarn guides, several of said yarn guides being placed side by side and coaxially linked, and wherein magnets are arranged alternatly on one side and on the other side of said coaxial linkage to cooperate with corresponding pairs of stationary magnetic components.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Looms (AREA)
  • Electromagnets (AREA)
US387517A 1972-08-12 1973-08-10 Magnetic control device for yarn guides Expired - Lifetime US3928988A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT9639/72A IT974590B (it) 1972-08-12 1972-08-12 Congegno di comando ad impulsi elettrici per guidafili di mac chine da maglieria e per altri impieghi

Publications (1)

Publication Number Publication Date
US3928988A true US3928988A (en) 1975-12-30

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US387517A Expired - Lifetime US3928988A (en) 1972-08-12 1973-08-10 Magnetic control device for yarn guides

Country Status (9)

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US (1) US3928988A (cs)
JP (1) JPS4985348A (cs)
CA (1) CA1006001A (cs)
CS (1) CS168666B2 (cs)
DD (1) DD107495A5 (cs)
DE (1) DE2340341A1 (cs)
FR (1) FR2198497A5 (cs)
GB (1) GB1436219A (cs)
IT (1) IT974590B (cs)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041733A (en) * 1975-04-03 1977-08-16 Elitex Yarn guide control
US4195277A (en) * 1978-06-26 1980-03-25 Xerox Corporation Moving permanent magnet limited motion actuator
US4244290A (en) * 1977-03-29 1981-01-13 Kabushiki Kaisha Suwa Seikosha Miniature printer
US4334748A (en) * 1978-12-09 1982-06-15 Horst Stacklies Photographic camera light controlling apparatus
US4736175A (en) * 1987-02-09 1988-04-05 The United States Of America As Represented By The Secretary Of The Navy Polarized rotary solenoid
US4998420A (en) * 1988-06-20 1991-03-12 Mario Scavino Lever-type yarn guide device operated by a linear motor, for textile machines
US5014031A (en) * 1989-07-21 1991-05-07 Heinz Nusser Ultra precision pressure regulator
GB2247315A (en) * 1990-08-22 1992-02-26 Rolls Royce Mateval Limited An impacting device for testing structures
EP0759625A1 (en) * 1995-08-23 1997-02-26 Rockwell Light Vehicle Systems (UK) Limited Magnetic actuators
FR2849100A1 (fr) * 2002-12-23 2004-06-25 Johnson Controls Tech Co Actionneur electromagnetique monobobine a palette pivotante
WO2004093299A1 (de) * 2003-04-07 2004-10-28 Enocean Gmbh Elektromagnetischer energiewandler
US20070247264A1 (en) * 2004-07-16 2007-10-25 Jean-Paul Yonnet Electromagnetic Control Device Operating By Switching
CN102088236A (zh) * 2009-12-04 2011-06-08 施耐德电器工业公司 电能产生装置以及具备这样装置的远程控制
ITMI20101116A1 (it) * 2010-06-18 2011-12-19 Jim Chih-Neng Chao Metodo per la produzione di maglieria multicolore.
US20180198359A1 (en) * 2017-01-12 2018-07-12 United States Of America As Represented By Secretary Of The Navy Low Profile Kinetic Energy Harvester
CN108360135A (zh) * 2018-05-15 2018-08-03 唐山雾谷机电设备有限公司 剪纱驱动结构
CN108374232A (zh) * 2018-05-15 2018-08-07 唐山雾谷机电设备有限公司 选纱控制结构
IT201700057890A1 (it) * 2017-05-29 2018-11-29 Lonati Spa Dispositivo di alimentazione del filo o dei fili per maglieria o per calzetteria.
CN110565258A (zh) * 2019-10-29 2019-12-13 浙江日发纺机技术有限公司 一种电动导纱杆
CN110923928A (zh) * 2019-12-09 2020-03-27 海盐晨得利时装有限公司 一种用于针织圆机的大孔过纱组件
US11437901B2 (en) * 2017-09-28 2022-09-06 Commissariat A L'energie Atomique Et Aux Energies Alternatives Electromagnetic energy converter
US20220294324A1 (en) * 2019-03-15 2022-09-15 Commissariat A L'energie Atomique Et Aux Energies Alternatives Electromagnetic device
US20230018365A1 (en) * 2021-07-15 2023-01-19 Etalim Inc. Electromechanical transducer apparatus

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CS211688B1 (en) * 1980-03-12 1982-02-26 Jan Ando Thread guide controlling apparatus
IT8120526U1 (it) * 1981-01-20 1982-07-20 Costruzioni Mecc Lonati Spa Dispositivo di comando di guidafili in una macchina circolare per maglieria, in particolare una macchina monocilindrica per calze
CS251880B1 (en) * 1985-04-03 1987-08-13 Jaromir Kucera Circular single-cylinder knitting machine
IT213563Z2 (it) * 1988-01-11 1990-01-22 Santoni & C Spa Dispositivo attuatore elettromagnetico in particolare per la selezione degli aghi in unamacchina per maglieria.
DE29611270U1 (de) * 1996-06-27 1996-09-05 D. Swarovski & Co., Wattens Reißverschluß
DE19945112A1 (de) * 1999-09-21 2001-03-22 Heinz Leiber Elektromagnetischer Aktuator
FR2825186B1 (fr) * 2001-05-23 2003-09-05 Sagem Actionneur electromagnetique
DE102015114734B4 (de) * 2015-09-03 2023-11-16 Baumüller Nürnberg GmbH Aktor für Textil-Legenadeln und andere Verstellobjekte sowie ein Bewegungs- oder Verstellverfahren

Citations (9)

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US1211372A (en) * 1914-07-24 1917-01-02 Scott & Williams Inc Yarn-changing mechanism for knitting-machines.
US1959016A (en) * 1930-10-27 1934-05-15 Lindsay M Applegate Oscillatory motor
US2436354A (en) * 1943-10-11 1948-02-17 Morgan Maree Jr A Electromagnet with armature
US3232079A (en) * 1962-12-24 1966-02-01 Southern Mill Equipment Corp Circular knitting machine
US3274802A (en) * 1963-10-16 1966-09-27 Morat Gmbh Franz Thread selector apparatus
US3418831A (en) * 1967-10-27 1968-12-31 Ertle Williamson Feed control for automatic striper
US3461690A (en) * 1966-02-28 1969-08-19 Mayer & Cie Maschinenfabrik Pattern device for circular knitting machines
US3530686A (en) * 1967-03-06 1970-09-29 Mayer & Cie Maschinenfabrik Pattern device for circular knitting machines having rotary needle carriers
US3550398A (en) * 1968-02-16 1970-12-29 Wildt Mellor Bromley Ltd Patterning mechanism for knitting machines

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1211372A (en) * 1914-07-24 1917-01-02 Scott & Williams Inc Yarn-changing mechanism for knitting-machines.
US1959016A (en) * 1930-10-27 1934-05-15 Lindsay M Applegate Oscillatory motor
US2436354A (en) * 1943-10-11 1948-02-17 Morgan Maree Jr A Electromagnet with armature
US3232079A (en) * 1962-12-24 1966-02-01 Southern Mill Equipment Corp Circular knitting machine
US3274802A (en) * 1963-10-16 1966-09-27 Morat Gmbh Franz Thread selector apparatus
US3461690A (en) * 1966-02-28 1969-08-19 Mayer & Cie Maschinenfabrik Pattern device for circular knitting machines
US3530686A (en) * 1967-03-06 1970-09-29 Mayer & Cie Maschinenfabrik Pattern device for circular knitting machines having rotary needle carriers
US3418831A (en) * 1967-10-27 1968-12-31 Ertle Williamson Feed control for automatic striper
US3550398A (en) * 1968-02-16 1970-12-29 Wildt Mellor Bromley Ltd Patterning mechanism for knitting machines

Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041733A (en) * 1975-04-03 1977-08-16 Elitex Yarn guide control
US4244290A (en) * 1977-03-29 1981-01-13 Kabushiki Kaisha Suwa Seikosha Miniature printer
US4195277A (en) * 1978-06-26 1980-03-25 Xerox Corporation Moving permanent magnet limited motion actuator
US4334748A (en) * 1978-12-09 1982-06-15 Horst Stacklies Photographic camera light controlling apparatus
US4736175A (en) * 1987-02-09 1988-04-05 The United States Of America As Represented By The Secretary Of The Navy Polarized rotary solenoid
US4998420A (en) * 1988-06-20 1991-03-12 Mario Scavino Lever-type yarn guide device operated by a linear motor, for textile machines
US5014031A (en) * 1989-07-21 1991-05-07 Heinz Nusser Ultra precision pressure regulator
GB2247315A (en) * 1990-08-22 1992-02-26 Rolls Royce Mateval Limited An impacting device for testing structures
GB2247315B (en) * 1990-08-22 1995-01-25 Rolls Royce A device for testing structure
WO1997008717A1 (en) * 1995-08-23 1997-03-06 Rockwell Light Vehicle Systems (Uk) Limited Magnetic actuators
EP0759625A1 (en) * 1995-08-23 1997-02-26 Rockwell Light Vehicle Systems (UK) Limited Magnetic actuators
FR2849100A1 (fr) * 2002-12-23 2004-06-25 Johnson Controls Tech Co Actionneur electromagnetique monobobine a palette pivotante
WO2004093299A1 (de) * 2003-04-07 2004-10-28 Enocean Gmbh Elektromagnetischer energiewandler
US20060091984A1 (en) * 2003-04-07 2006-05-04 Enocean Gmbh Electromagnetic energy transducer
US7710227B2 (en) * 2003-04-07 2010-05-04 Enocean Gmbh Electromagnetic energy transducer
US20100194213A1 (en) * 2003-04-07 2010-08-05 Frank Schmidt Electromagnetic Energy Transducer
EP2264875A1 (de) * 2003-04-07 2010-12-22 EnOcean GmbH Elektromagnetischer Energiewandler und Verfahren zum Umwandeln von mechanischer Energie in elektrische Energie
US8704625B2 (en) 2003-04-07 2014-04-22 Enocean Gmbh Electromagnetic energy transducer
US8228151B2 (en) 2003-04-07 2012-07-24 Enocean Gmbh Electromagnetic energy transducer
US20070247264A1 (en) * 2004-07-16 2007-10-25 Jean-Paul Yonnet Electromagnetic Control Device Operating By Switching
US7804386B2 (en) * 2004-07-16 2010-09-28 Peugeot Citroen Automobiles Sa Electromagnetic control device operating by switching
EP2337193A1 (fr) * 2009-12-04 2011-06-22 Schneider Electric Industries SAS Dispositif générateur d'énergie électrique et télécommande pourvue d'un tel dispositif
FR2953659A1 (fr) * 2009-12-04 2011-06-10 Schneider Electric Ind Sas Dispositif generateur d'energie electrique et telecommande pourvue d'un tel dispositif
US20110133975A1 (en) * 2009-12-04 2011-06-09 Schneider Electric Industries Sas Electrical energy-generating device and remote control equipped with such a device
US8624447B2 (en) 2009-12-04 2014-01-07 Schneider Electric Industries Sas Electrical energy-generating device and remote control equipped with such a device
CN102088236A (zh) * 2009-12-04 2011-06-08 施耐德电器工业公司 电能产生装置以及具备这样装置的远程控制
CN102088236B (zh) * 2009-12-04 2014-06-11 施耐德电器工业公司 电能产生装置以及具备这样装置的远程控制
ITMI20101116A1 (it) * 2010-06-18 2011-12-19 Jim Chih-Neng Chao Metodo per la produzione di maglieria multicolore.
US20180198359A1 (en) * 2017-01-12 2018-07-12 United States Of America As Represented By Secretary Of The Navy Low Profile Kinetic Energy Harvester
US10404150B2 (en) * 2017-01-12 2019-09-03 United States Of America As Represented By The Secretary Of The Navy Low profile kinetic energy harvester
US11939710B2 (en) * 2017-05-29 2024-03-26 Lonati S.P.A. Device for feeding yarn or yarns for knitting machines for hosiery or the like
EA038412B1 (ru) * 2017-05-29 2021-08-25 ЛОНАТИ С.п.А. Устройство нитеподачи для вязальных машин для трикотажа
IT201700057890A1 (it) * 2017-05-29 2018-11-29 Lonati Spa Dispositivo di alimentazione del filo o dei fili per maglieria o per calzetteria.
WO2018219806A1 (en) * 2017-05-29 2018-12-06 Lonati S.P.A. Device for feeding yarn or yarns for knitting machines for hosiery or the like
CN110799686B (zh) * 2017-05-29 2022-06-10 罗纳地股份公司 用于对用于袜类或类似物的针织机馈送一根或多根纱线的装置
KR20200013673A (ko) * 2017-05-29 2020-02-07 로나티 에스.피.에이. 양말 등을 위한 편직 기계를 위한 실 공급 장치
CN110799686A (zh) * 2017-05-29 2020-02-14 罗纳地股份公司 用于对用于袜类或类似物的针织机馈送一根或多根纱线的装置
US11437901B2 (en) * 2017-09-28 2022-09-06 Commissariat A L'energie Atomique Et Aux Energies Alternatives Electromagnetic energy converter
CN108374232A (zh) * 2018-05-15 2018-08-07 唐山雾谷机电设备有限公司 选纱控制结构
CN108360135A (zh) * 2018-05-15 2018-08-03 唐山雾谷机电设备有限公司 剪纱驱动结构
US20220294324A1 (en) * 2019-03-15 2022-09-15 Commissariat A L'energie Atomique Et Aux Energies Alternatives Electromagnetic device
US12034348B2 (en) * 2019-03-15 2024-07-09 Commissariat A L'energie Atomique Et Aux Energies Alternatives Electromagnetic device with two conductive coils, first and second yokes, stabilizing magnets and actuating magnets
CN110565258A (zh) * 2019-10-29 2019-12-13 浙江日发纺机技术有限公司 一种电动导纱杆
CN110923928A (zh) * 2019-12-09 2020-03-27 海盐晨得利时装有限公司 一种用于针织圆机的大孔过纱组件
US20230018365A1 (en) * 2021-07-15 2023-01-19 Etalim Inc. Electromechanical transducer apparatus
US12142984B2 (en) * 2021-07-15 2024-11-12 Etalim Inc. Transducer apparatus having magnetic flux generators with pole pieces, reciprocators and closing pieces for channeling magnetic flux

Also Published As

Publication number Publication date
CA1006001A (en) 1977-03-01
IT974590B (it) 1974-07-10
CS168666B2 (cs) 1976-06-29
JPS4985348A (cs) 1974-08-15
GB1436219A (en) 1976-05-19
DD107495A5 (cs) 1974-08-05
FR2198497A5 (cs) 1974-03-29
DE2340341A1 (de) 1974-02-21

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