[go: up one dir, main page]

FR2513338A1 - ELECTROMAGNETIC SAFETY BRAKE - Google Patents

ELECTROMAGNETIC SAFETY BRAKE Download PDF

Info

Publication number
FR2513338A1
FR2513338A1 FR8216147A FR8216147A FR2513338A1 FR 2513338 A1 FR2513338 A1 FR 2513338A1 FR 8216147 A FR8216147 A FR 8216147A FR 8216147 A FR8216147 A FR 8216147A FR 2513338 A1 FR2513338 A1 FR 2513338A1
Authority
FR
France
Prior art keywords
armature
annular
coil
electromagnetic safety
safety brake
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR8216147A
Other languages
French (fr)
Inventor
Bernard Guidat
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of FR2513338A1 publication Critical patent/FR2513338A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D59/00—Self-acting brakes, e.g. coming into operation at a predetermined speed
    • F16D59/02—Self-acting brakes, e.g. coming into operation at a predetermined speed spring-loaded and adapted to be released by mechanical, fluid, or electromagnetic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/24—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
    • F16D55/26—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member without self-tightening action
    • F16D55/28—Brakes with only one rotating disc
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/38—Slack adjusters
    • F16D65/40—Slack adjusters mechanical
    • F16D65/42—Slack adjusters mechanical non-automatic
    • F16D65/46—Slack adjusters mechanical non-automatic with screw-thread and nut
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
    • H02K7/1021—Magnetically influenced friction brakes
    • H02K7/1023—Magnetically influenced friction brakes using electromagnets
    • H02K7/1025—Magnetically influenced friction brakes using electromagnets using axial electromagnets with generally annular air gap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/0058—Fully lined, i.e. braking surface extending over the entire disc circumference
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/18—Electric or magnetic
    • F16D2121/20—Electric or magnetic using electromagnets
    • F16D2121/22—Electric or magnetic using electromagnets for releasing a normally applied brake

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention relates to an electromagnetic safety brake with a fixed electric annular coil and an axially displaceable annular armature and, furthermore, with spring means acting annularly on this armature so as to move the armature into its braking position in the de-energised condition of the coil, these means being designed as resilient annular diaphragms and exerting on the armature a force uniformly distributed in a ring and acting approximately on the same diameters in relation to the brake linings, or the said means being in the form of annular pistons for pneumatic or hydraulic actuation.

Description

FREIN ELECTROMAGNETIQUE DE SECURITE
La présente invention concerne un frein électromagnétique de sécurité comprenant une bobine électrique annulaire fixe et un induit de forme annulaire déplaçable axialement, ainsi que des moyens pour amener l'induit dans sa position de freinage en l'absence de courant dans la bobine.ELECTROMAGNETIC SAFETY BRAKE
The present invention relates to an electromagnetic safety brake comprising a fixed annular electric coil and an armature of annular shape movable axially, as well as means for bringing the armature into its braking position in the absence of current in the coil.

Dans l'industrie, les freins électromagnétique de sécurité courants exercent une action de freinage en l'état d'absence de courant. Lors du passage du courant, le freinage est supprimé et l'arbre est libéré en rotation. Dans l'état d'absence de courant, dans ces agencements de l'art antérieur, un certain nombre de ressorts hélicoidaux, normalement entre 6 et 12, pressent le disque de l'induit contre des garnitures de friction et la paroi de la machine (voir par exemple les freins de sécurité mis sur le marché sous le nom de MAYR). In industry, the current electromagnetic safety brakes exert a braking action in the state of no current. When the current flows, the braking is removed and the shaft is released in rotation. In the state of absence of current, in these arrangements of the prior art, a certain number of helical springs, normally between 6 and 12, press the disc of the armature against friction linings and the wall of the machine (see for example the safety brakes put on the market under the name of MAYR).

La pratique a montré qu'en l'absence du courant et conjointement lors du déclenchement du freinage, les garnitures de frein viennent s'appliquer, au moins dans un premier instant, de façon inégale sur la pièce rotative corresponSante, qu'elles s'usent par suite de façon inégale et ne développent pas immédiatement la force de freinage entiere. Practice has shown that in the absence of current and jointly during the initiation of braking, the brake linings are applied, at least in a first instant, unevenly on the corresponding rotating part, that they as a result wear unevenly and does not immediately develop the entire braking force.

Le but de l'invention est de réaliser un frein électromagnétique de sécurité, qui attaque immédiatement les surfaces de freinage simultanément sur leur étendue entière, en empêchant ainsi une usure irrégulière des garnitures et une action de freinage initiale médiocre. The object of the invention is to provide an electromagnetic safety brake, which immediately attacks the braking surfaces simultaneously over their entire extent, thereby preventing irregular wear of the linings and poor initial braking action.

L'objectif précité est atteint selon l'invention par le fait que l'on propose un frein électromagnétique de sécurité dans lequel les moyens précités exercent sur l'induit une force d'allure circulaire par rapport à l'axe de déplacement de l'induit et distribuée au moins de façon à peu près régulière. The aforementioned objective is achieved according to the invention by the fact that an electromagnetic safety brake is proposed in which the aforementioned means exert on the armature a force of circular shape relative to the axis of movement of the induced and distributed at least almost regularly.

D'autres caractéristiques et avantages de l'invention ressortiront plus clairement à la lecture de la description qui va suivre d'un exemple de réalisation, donnée à titre indicatif mais nullement limitatif, en référence au dessin annexé, dans lequel
La figure unique représente une vue en coupe selon un plan méridien, du frein électromagnétique de sécurité de l'invention.Other characteristics and advantages of the invention will emerge more clearly on reading the description which follows of an exemplary embodiment, given by way of indication but in no way limiting, with reference to the appended drawing, in which
The single figure shows a sectional view along a meridian plane of the electromagnetic safety brake of the invention.

En se référant à la figure, on peut voir que le frein de sécurité 1 est agencé essentiellement à symétrie de rotation. Dans le milieu se trouve un arbre moteur 3, qui est relié solidaire en rotation à un rotor 4 par l'intermédiaire de 2 bagues oniques 6 et 7.La liaison commandée à force est obtenue par un col?ier tender 10, qui agit sur un anneau cylindrique 8, l'anneau 8 amenant les 2 bagues coniques 6 et 7 à glisser l'une contre l'autre at ayant conjointement pour effet de presser la bague conque 7, doit naturellement être fendue, sur l'arbre moteur 3. te ollicr tendeur 10 est retenu contre le rotor å l'aide de vis 7 réparties sur la périphérie. Referring to the figure, it can be seen that the safety brake 1 is arranged essentially with rotational symmetry. In the middle is a motor shaft 3, which is rotatably connected to a rotor 4 by means of 2 onic rings 6 and 7. The force-controlled connection is obtained by a collar tender tender 10, which acts on a cylindrical ring 8, the ring 8 causing the 2 conical rings 6 and 7 to slide one against the other at having the joint effect of pressing the conch ring 7, must naturally be split, on the motor shaft 3. te ollicr tensioner 10 is retained against the rotor using screws 7 distributed on the periphery.

De l'autre coté du rotor 4 est raccordé audit rotor par l'intermédiaire d'une bague 15 et des vis 16, un disque 12 de support de frein. Dans 13 région périphérique du disque 12 se trouve de part et dwaVltre une garniture de friction respective 17 et 18. On the other side of the rotor 4 is connected to said rotor by means of a ring 15 and screws 16, a disc 12 for the brake support. In 13 peripheral region of the disc 12 there is on each side and a respective friction lining 17 and 18.

Un boiter 20 monté fixe présente un corps de base 22 de forme annulaire, tui est raccordé par l'intermédiaire d'agrafes à une contre-bride 23. Des vis tendeuses d'ancrage 26 réparties périphériq-t;--:nt permettent, par l'intermédiaire d'écrous 27, de maintenir un espacement correspondant. A box 20 fixedly mounted has a base body 22 of annular shape, tui is connected by means of staples to a counter flange 23. Tensioning anchor screws 26 distributed peripherally; -: nt allow, by means of nuts 27, to maintain a corresponding spacing.

Le corps de base 22 de forme annulaire est muni d'une gorge annulaire 28 dans laquelle est insérée une bobine 29. Celleci peut être reliés à un générateur de courant par l'intermédiaire d'une ligne 30 d'alimentation de courant et d'une douille 31 de raccordement. Ledit générateur de courant peut être une source de courant continu ou de courant à alternatif.The base body 22 of annular shape is provided with an annular groove 28 in which a coil 29 is inserted. This can be connected to a current generator via a line 30 for supplying current and a connection socket 31. Said current generator can be a source of direct current or alternating current.

Un corps d'induit 33, engagé axialement à glissement dans le corps de base 22 à l'aide d'un guide 36 de forme annulaire, et chargé dans sa partie médiane par une membrane annulaire 38 à élasticité de ressort, ladite membrane étant reliée dans sa région périphérique extérieure, à l'aide de vis 39, avec le corps de base 22 et dans sa région périphéri que intérieure,à l'aide de vis 40, avec le corps d'induit 33. An armature body 33, axially engaged in sliding in the base body 22 using a guide 36 of annular shape, and loaded in its middle part by an annular membrane 38 with spring elasticity, said membrane being connected in its outer peripheral region, using screws 39, with the base body 22 and in its inner peripheral region, using screws 40, with the armature body 33.

Un couvercle à serrage 42 sert d'organe de fermeture.A clamping cover 42 serves as a closure member.

Ledit frein électromagnétique de sécurité fonctionne comme suit
Le courant étant branché et la bobine 2 excitée, le champ magnétique produit par ladite bobine 29 ar ire le corps d'induit 33, si bien que les garnitures de friction 17 et 18 se trouvent dégagées et que l'arbre 3 entraîné par le moteur peut tourner librement avec le rotor 4, le disque de support 12 et les deux garnitures de friction 7 et 18.The electromagnetic safety brake operates as follows
With the current connected and the coil 2 energized, the magnetic field produced by said coil 29 backs the armature body 33, so that the friction linings 17 and 18 are released and the shaft 3 driven by the motor. can rotate freely with the rotor 4, the support disc 12 and the two friction linings 7 and 18.

Lorsqu'une interruption de courant survient, la bobine 29 ne laisse plus passer de courant, le champ magnétique disparait et avec lui sa force d'attraction sur le corps d'induit 33. Ce dernier ne se trouve plus maintenant que sous l'effet de la force de la membrane annulaire 38 à élasticité de ressort, qui tend à revenir à sa position de repos. Elle déplace par suite l'anneau de guidage 36 du corps d'induit 33 pour l'éloigner de la bobine 29 en direction du disque 12 comportant les garnitures de friction 17 et 18 et pressent ces dernières sur la contre-bride 23 fixe.Du fait de la présence de la membrane annulaire 38 à élasticité de ressort, exerçant une action régulière sur toute la périphérie, la charge des garnitures de friction 17 et 18, et du disque 12 de support ainsi que de la contre-bride 23, s'effectue en même temps sur toute la périphérie avec une force unitaire, si bien que l'action de freinage totale se déclenche immédiatement et qu'il ne se produit pas d'usure inégale des garnitures de friction 17 et 18. When a current interruption occurs, the coil 29 no longer lets current flow, the magnetic field disappears and with it its force of attraction on the armature body 33. The latter is now only under the effect of the force of the spring-elastic annular membrane 38, which tends to return to its rest position. It therefore moves the guide ring 36 of the armature body 33 to move it away from the coil 29 in the direction of the disc 12 comprising the friction linings 17 and 18 and press the latter on the fixed counter-flange 23. made of the presence of the annular membrane 38 with spring elasticity, exerting a regular action over the entire periphery, the load of the friction linings 17 and 18, and of the support disc 12 as well as of the counter-flange 23, s' applies at the same time over the whole periphery with a unitary force, so that the total braking action is immediately activated and there is no uneven wear of the friction linings 17 and 18.

En conséquence de cette charge régulière sur la périphérie, engendrée par la membrane annulaire 38 à élasticité de ressort, le problème initialement défini est résolu selon l'invention, comme le montre des essais approfondis. As a result of this regular load on the periphery, generated by the annular membrane 38 with spring elasticity, the problem initially defined is solved according to the invention, as shown by in-depth tests.

I1 est entendu que l'on peut mettre en oeuvre l'invention selon de nombreuses modifications et variantes sans toutefois s'écarter de son cadre et son esprit, et il est ainsi fondamentalement possible de produire une force agissant de façon régulière sur toute la périphérie par d'autres moyens, par exemple par voie hydraulique ou pneumatique.  It is understood that the invention can be implemented according to numerous modifications and variants without however departing from its scope and spirit, and it is thus fundamentally possible to produce a force acting regularly over the entire periphery. by other means, for example hydraulically or pneumatically.

Claims (3)

REVENDICATIONS 1. Frein électromagnétique de sécurité comportant une bobine électrique annulaire fixe (29) et un induit de forme annulaire (33)déplaçable axialement, ainsi que des-moyens à ressort de forme annulaire (8) agissant sur l'induit pour l'amener dans sa position de freinage, en l'absence de courant dans la bobine, caractérisé en ce que les moyens (38) exercent sur l'induit (33) une force d'allure circulaire par rapport à un axe de déplacement de l'induit, cette force étant répartie au moins de façon sensiblement régulière. 1. Electromagnetic safety brake comprising a fixed annular electric coil (29) and an annularly shaped armature (33) axially displaceable, as well as annularly shaped spring means (8) acting on the armature to bring it into its braking position, in the absence of current in the coil, characterized in that the means (38) exert on the armature (33) a force of circular shape relative to an axis of movement of the armature, this force being distributed at least substantially regularly. 2. Frein selon la revendication 1, caractérisé en ce que les moyens (38) sont agencés sous la forme d'une membrane à élasticité de ressort, notamment de forme annulaire. 2. Brake according to claim 1, characterized in that the means (38) are arranged in the form of a spring-elastic membrane, in particular of annular shape. 3. Frein selon la revendication 1 ou 2, caractérisé en ce que les moyens (38) sont agencés en forme de piston annulaire et sont prévus pour être actionnés par voie pneumatique ou hydraulique.  3. Brake according to claim 1 or 2, characterized in that the means (38) are arranged in the form of an annular piston and are designed to be actuated pneumatically or hydraulically.
FR8216147A 1981-09-24 1982-09-24 ELECTROMAGNETIC SAFETY BRAKE Withdrawn FR2513338A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813137954 DE3137954A1 (en) 1981-09-24 1981-09-24 Electromagnetic safety brake

Publications (1)

Publication Number Publication Date
FR2513338A1 true FR2513338A1 (en) 1983-03-25

Family

ID=6142462

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8216147A Withdrawn FR2513338A1 (en) 1981-09-24 1982-09-24 ELECTROMAGNETIC SAFETY BRAKE

Country Status (3)

Country Link
DE (1) DE3137954A1 (en)
FR (1) FR2513338A1 (en)
IT (1) IT1153972B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1011188A1 (en) * 1998-12-16 2000-06-21 ZF FRIEDRICHSHAFEN Aktiengesellschaft Electrical motor with integrated electromagnetically actuated brakewithout rotational clearence
EP0903273A3 (en) * 1997-09-18 2001-01-31 Still Gmbh Vehicle spring brake actuator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1062208A (en) * 1952-08-26 1954-04-21 Bamag Meguin Ag AC electromagnetic brake
FR1531246A (en) * 1967-07-18 1968-06-28 Zahnradfabrik Friedrichshafen Spring brake coupling with electromagnetic clutch in counteracting elastic force
US3677377A (en) * 1971-03-31 1972-07-18 Bendix Corp Self-adjusting electromagnetic clutch-brake
US4057297A (en) * 1976-06-28 1977-11-08 Beck Henry E Brake mechanism with spring applied fluid pressure released assembly
DE2844925A1 (en) * 1978-10-14 1979-10-25 Moenninghoff Gmbh & Co Kg Masc Release spring for electromagnetic brake - has star shaped profile with sprung release tags and apertures to locate solenoid

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1062208A (en) * 1952-08-26 1954-04-21 Bamag Meguin Ag AC electromagnetic brake
FR1531246A (en) * 1967-07-18 1968-06-28 Zahnradfabrik Friedrichshafen Spring brake coupling with electromagnetic clutch in counteracting elastic force
US3677377A (en) * 1971-03-31 1972-07-18 Bendix Corp Self-adjusting electromagnetic clutch-brake
US4057297A (en) * 1976-06-28 1977-11-08 Beck Henry E Brake mechanism with spring applied fluid pressure released assembly
DE2844925A1 (en) * 1978-10-14 1979-10-25 Moenninghoff Gmbh & Co Kg Masc Release spring for electromagnetic brake - has star shaped profile with sprung release tags and apertures to locate solenoid

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 16, no. 11, avril 1974, New York (US); I.W. BOLTON: "Fail-safe brake", page 3762. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0903273A3 (en) * 1997-09-18 2001-01-31 Still Gmbh Vehicle spring brake actuator
EP1011188A1 (en) * 1998-12-16 2000-06-21 ZF FRIEDRICHSHAFEN Aktiengesellschaft Electrical motor with integrated electromagnetically actuated brakewithout rotational clearence

Also Published As

Publication number Publication date
IT1153972B (en) 1987-01-21
DE3137954A1 (en) 1983-04-14
IT8223389A0 (en) 1982-09-22

Similar Documents

Publication Publication Date Title
FR2470295A1 (en) MECHANICAL ACTUATING DEVICE FOR DISC BRAKE WITH PARTIAL FITTINGS
US4773210A (en) Open-end rotor-spinning device
JPH0127249Y2 (en)
FR2829206A1 (en) SAFETY LOCKING DEVICE FOR ELECTROMECHANICAL EQUIPMENT, AND AIRCRAFT WHEEL BRAKE PROVIDED WITH SUCH A DEVICE
FR2748244A1 (en) ELECTROMECHANICAL ACTUATION DEVICE FOR DISC BRAKES OF VEHICLES ON RAILS
JP3354969B2 (en) Braking mechanism driven by rotation of thread tensioner
FR2513338A1 (en) ELECTROMAGNETIC SAFETY BRAKE
EP0478398B1 (en) Electromechanical control device with a centrifugal structure
EP1454074B1 (en) Dog clutch device
FR2702523A1 (en) Control cylinder, in particular of a control shaft of a gearbox for motor vehicles.
FR2682441A1 (en) INTEGRATED SEALING GUIDE TUBE FOR VEHICLE AUTOMOTIVE GEARBOX RELEASE CLUTCH.
FR2558018A1 (en) ELECTRIC MOTOR, PARTICULARLY FOR VEHICLE ACCESSORY AND MOUNTING METHOD THEREOF
EP0241385A1 (en) Vibrating-blade knife
FR2695765A1 (en) Electrical and mechanical brake for electric motor - has mechanical brake working by centrifugal force operated by rotation of motor and use of brake shoes
FR2460877A1 (en) DEVICE FOR THE WINDING OF TEXTILE MATERIALS
FR2547004A1 (en) BRAKE MOTOR WITH AUTOMATIC ADJUSTMENT
US4235310A (en) Automatic adjuster for hydraulically actuated double disc brake
US4069901A (en) Momentum type electrically controlled torque producing devices
FR2735824A1 (en) FRICTION CLUTCH WITH INTERCHANGEABLE FRICTION DISC
FR2608140A3 (en) Braked manual pay-out support for a reel of stretchable film
FR2521966A1 (en) DEVICE FOR THE WINDING OF TEXTILE MATERIALS COMPRISING A BRAKE MEMBER FOR THE IMMOBILIZATION OF THE WINDING AT THE END OF OPERATION
FR2547805A1 (en) GUIDE-WIRE GALET EQUIPPING THE WIRE FEED DEVICE IN A TEXTILE MACHINE
KR890002675Y1 (en) Disk brasking device
FR2572137A1 (en) Contactorless electric starter engagement system
FR2549027A1 (en) Yarn feed

Legal Events

Date Code Title Description
ST Notification of lapse