EP0518934A1 - Dispositif de tension de fil. - Google Patents

Dispositif de tension de fil.

Info

Publication number
EP0518934A1
EP0518934A1 EP91905550A EP91905550A EP0518934A1 EP 0518934 A1 EP0518934 A1 EP 0518934A1 EP 91905550 A EP91905550 A EP 91905550A EP 91905550 A EP91905550 A EP 91905550A EP 0518934 A1 EP0518934 A1 EP 0518934A1
Authority
EP
European Patent Office
Prior art keywords
thread
shielding surface
axis
braking device
holder
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.)
Granted
Application number
EP91905550A
Other languages
German (de)
English (en)
Other versions
EP0518934B1 (fr
Inventor
Kurt Arne Gunnar Jacobsson
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.)
Iro AB
Original Assignee
Iro AB
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 Iro AB filed Critical Iro AB
Publication of EP0518934A1 publication Critical patent/EP0518934A1/fr
Application granted granted Critical
Publication of EP0518934B1 publication Critical patent/EP0518934B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34Handling the weft between bulk storage and weft-inserting means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00Guides for filamentary materials; Supports therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00Guides for filamentary materials; Supports therefor
    • B65H57/28Reciprocating or oscillating guides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/20Co-operating surfaces mounted for relative movement
    • B65H59/22Co-operating surfaces mounted for relative movement and arranged to apply pressure to material
    • B65H59/225Tension discs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/30Handled filamentary material
    • B65H2701/31Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a thread broaching device of the type specified in the preamble of claim 1 and a shielding surface according to independent claim 16.
  • a thread supplier When a thread is fed from a supply spool to a consumer, for example a weaving machine or a knitting machine, a thread supplier is used to eliminate changes in the thread tension and to offer the thread to the consumer under optimal conditions. Thanks to the thread feeder, the processing speed could be increased extraordinarily without increasing the strength of the thread.
  • the thread supplier for example a thread storage and delivery device, is aligned with its axis to the entry point of the thread into the consumer, for example into the compartment of the weaving machine, in order to ensure the least possible deflection in the thread path to the consumer.
  • One or more thread supply bobbins from which the thread feeder pulls out cannot normally be aligned with the axis of the thread feeder then defined.
  • a thread braking device is provided on the feed side of the thread supplier.
  • a shielding surface which is either a flat plate or a spherical cap, is fixedly arranged on the thread braking device. The shielding surface should be perpendicular to the direction of the thread in order to shield with as large an area as possible.
  • the thread braking device must be inclined relative to the axis of the thread supplier.
  • this leads to an undesired deflection of the thread between the thread braking device and the thread supplier, ie at a point in the thread path before which the braking device generates a tension in the thread.
  • this leads to an increase in tension increases and in particular tension peaks which arise from the unwinding from the supply reel. This results in the risk of thread breaks.
  • At least one thread opening has to be arranged stationary in the way from the supply spool to the consumer for thread guidance. So that the thread that is alive during its run (balloon formation) and that sometimes sags when the speed changes, does not get caught on the obstacle formed by the thread opening, the thread opening is arranged in a large-area shielding surface that is transverse to the direction of the thread and prevents the thread from becoming caught.
  • the invention has for its object to provide a thread braking device or a shielding surface with which the aforementioned disadvantages are avoided become.
  • a thread braking device on the inlet side of a thread supplier the number of thread breaks is to be reduced.
  • a shielding surface for general thread guiding tasks an optimal shielding effect which prevents thread breaks in this area should always be guaranteed.
  • the thread braking device intended for the feed side of the thread supplier can be aligned with the axis of the thread supplier in such a way that there is no deflection downstream of the thread brake which increases the risk of thread breaks.
  • the risk of the thread jamming on the thread braking device is also reduced because the shielding surface can be adjusted in each case to the feed direction of the thread, so that the largest possible shielding surface becomes effective.
  • the shielding surface ensures an optimal shielding effect by its adjustment to the feed direction. In both cases it is important to be able to set the shielding surface at least approximately transversely to the feed direction, which is made possible by the direction setting means.
  • the shielding surface need not be oversized, as has often been the case up to now, because it can be individually adjusted to the thread feed direction. In the mostly cramped space conditions for thread processing, this is essential, as often - 4 -
  • the embodiment of claim 2 is advantageous because the form-fitting direction setting means ensure a precise setting of the shielding surface and precisely reproducible setting positions, while the non-positive means for fixing the shielding surface absorb unavoidable reaction forces from vibrations during operation.
  • the embodiment of claim 4 is also structurally expedient, in which the shielding surface also has part of the direction setting means.
  • the embodiment of claim 5 is expedient, in which the support of the base body is used for the correct setting of the shielding surface.
  • a particularly expedient, functionally reliable and easy-to-use embodiment is set out in claim 6.
  • the shielding surface is held securely in the slewing ring. Just by hiring rotational movement of the shielding surface to be carried out relative to the base body or of the base body relative to the shielding surface, the shielding surface is adapted to the respective inflow direction.
  • the embodiment according to claim 7 has proven particularly useful in practice because it covers all deviations between the thread passage axis in the thread brake and the direction of feed of the thread between 0 ° and 45 °. If the inlet direction deviates by more than 45 ° from the through axis, then the 45 ° inclined position of the shielding surface also ensures adequate shielding. For larger angular deviations, the inclined angles can also be larger and / or different from one another.
  • a ball or universal joint enables the transverse position of the shielding surface to be easily adapted to any feed direction of the thread.
  • the embodiment according to claim 9 is also expedient, in which the respective setting position of the shielding surface is produced by superimposing a pivoting movement of the shielding surface camouflaging the axis of rotation and a rotational movement of the base body about the pass axis.
  • the embodiment according to claim 10 is expedient, in which the base body can be rotated relative to the support.
  • the spherical cap provides a particularly good protection against curling.
  • a structurally simple and reliable embodiment is also apparent from claim 13.
  • the inclined position of the holder with respect to the through axis and the inclined position of the end side with respect to the shielding surface itself determine the maximum possible inclined position of the shielding surface, which can be adjusted by twisting.
  • the shielding surface is fixed using the lock nut.
  • the individual components are easy to manufacture. The changes can be made quickly and easily using simple tools. Vibrations do not change the selected setting of the shielding surface.
  • the embodiment of claim 14 is important with a view to treating the thread as gently as possible.
  • the incoming thread is essentially deflected at the inlet eyelet. He will only touch the other thread eyelet behind it during extreme transverse movements.
  • the measure according to claim 15 is important.
  • FIGS. 1 and 2 shows a part of the thread braking device of FIG. 1 after an adjustment has been made, FIGS. 1 and 2 each representing limit settings,
  • a stationary shielding surface e.g. a thread braking device
  • FIG. 5 shows a further embodiment of a thread brake device in a side view
  • Fig. 6 is a diagram to illustrate geometric relationships in thread processing.
  • a thread brake device B can be seen from FIGS. 1 and 2, as is arranged on the feed side of a thread feeder F (FIG. 6) during thread processing.
  • a shielding surface A according to FIG. 4 can be integrated into the thread braking device B as in FIGS. 1, 2, 3, 4 and 5.
  • the consumer C is a loom that processes the thread Y as a weft.
  • the thread Y is stored on thread supply spools S provided in a holder H.
  • the threads of thread supply spools S belonging together are linked to one another so that a change from an empty supply spool S to a full one takes place automatically.
  • the thread feeder F is a thread storage and delivery device which pulls the thread Y from the supply spool S, stores it and, with a substantially low thread tension, offers it to the consumer C, who pulls the thread Y as required.
  • the thread feeder F is aligned with its axis approximately at the entry point on the consumer C, e.g. in single-color weaving with a thread feeder F.
  • each thread feeder F may be necessary to incline each thread feeder F with its axis.
  • a shielding element A with a thread opening can also be provided between the thread supplier and the consumer or at another point in the thread path (Fig. 6), e.g. in the case of an intermediate nozzle or a threading nozzle which is used for automatic threading and on which the thread should not become caught despite the formation of a balloon.
  • Thread brake device B On the feed side of the thread feeder F is the Thread brake device B is attached, which has a thread passage axis f.
  • a shielding surface A is attached to the thread brake device B and is to be positioned transversely to the feed direction R in order to prevent it from hanging when sagging or when a balloon is formed.
  • direction setting means M are provided on the thread braking device B, with which the transverse position of the shielding surface A is matched to the respective inflow direction R.
  • the shielding area A can in principle be set to a medium or average inflow direction.
  • the thread brake device B has a bow-shaped base body 1 with a holding part 2, to which a thread brake 3 is attached.
  • the embodiment shown is a disk brake with discs 3a, 3b pressed against one another by a spring 3c, which are movably mounted on a support 3c fixed with a nut 3e.
  • the bias of the spring 3c can be changed by an adjusting screw 3d.
  • a support 4 in the form of a square plate is arranged on the holding part 2 at the lower end and contains fastening means 5, for example elongated holes, by means of which the thread braking device B is fastened to the feed side of the thread feeder F.
  • the elongated holes 5 are arranged concentrically around a central thread eyelet 6, so that the base body 1 can be implemented by 90 ° in the direction of an arrow 21 or a through hole and can also be rotated to a limited extent.
  • the holding part 2 has a tab 7 with an upper side 8 and a lower side 9.
  • the thread braking device B has a fixed thread passage axis f which is aligned with the axis of the thread supplier F in FIG. 6 in order to deflect the thread Y. between the thread brake 3 and the thread supplier.
  • the shielding surface A which is designed as a spherical cap 11 made of plastic or sheet metal, has a shoulder 12 on the back with an end side 15 which is inclined relative to the plane 16 of the shielding surface A and which rests on the side 8 of the tab 7.
  • the tab 7 is inclined relative to the pass axis f.
  • the approach 12 has a hollow threaded projection 17 which protrudes through an opening of the tab 7 which is not highlighted.
  • a counter nut 18 is screwed onto the threaded shoulder 17 and bears against the side 9 of the tab 7.
  • a ceramic thread eyelet 19 is arranged in the threaded attachment 17, the center of which lies in the passage axis F.
  • a ceramic thread eyelet 13 is also arranged on the inlet side of the shielding surface A.
  • a thread opening 22 extends between the two thread eyelets 13 and 19.
  • the extension 12 is fixed with a rotary connection D on the tab 7.
  • the rotary connection D has an axis of rotation 10 which is inclined perpendicular to the plate 7 and crosses the passage axis f.
  • the first axis of rotation 10 is at an angle oC with respect to the pass axis f.
  • an angle ⁇ is provided between the plane 16 of the shielding surface A and one on the first axis of rotation 10 vertical plane 14.
  • the angles ° and ⁇ are approximately 22.5 °.
  • the angles .theta. And .beta. Can be different from one another and their sum can be greater than 45 °.
  • the feed direction R1 of the thread Y deviates from the pass axis f by 45 °.
  • the approach 12 of the shielding surface A is twisted into a maximum limit position relative to the tab 7.
  • the angles C and ß add up.
  • the plane 16 of the shielding surface A is approximately perpendicular to the feed direction R1.
  • Fig. 2 it is indicated that in the other limit rotary position of the shielding surface A, the two angles ⁇ O-un ß cancel each other and there is a straight passage in the direction of the passage axis f for an inlet direction R aligned with the passage axis f.
  • the angle is formed between the first axis of rotation 10 and the pass-through axis f, while the angle ⁇ between the plane of the shielding surface A and a vertical plane 14 on the first axis of rotation 10 is to be measured.
  • the base body 1 is converted by 180 ° about the pass axis f.
  • the support body 1 is correspondingly implemented and rotated in the elongated holes 5, so that the plane 16 of the shielding surface approximately is perpendicular to the feed direction.
  • the shielding surface A according to FIG. 4 is a spherical cap made of plastic or sheet metal.
  • the projection 12 ' is formed with approximately the shape of a ball, which is penetrated by the thread opening 22, in which the thread eyelet 13 and optionally, not necessarily, the further thread eyelet 19 are seated.
  • the spherical surface of the extension 12 ' is surrounded by a spherical retaining ring 22, which is optionally slotted and has clamping projections 24 for a clamping screw 25.
  • a ball joint K is formed between a stationary holder 26, which can also be the holding part 2 of FIG. 1, and the shielding surface A, which adapts the transverse position of the shielding surface A to the respective inflow direction R (aligned with the pass axis f ) or Rl or R2 (each inclined to the inlet axis f).
  • the shielding surface A according to FIG. 4 could also be used by itself for thread-carrying tasks where a thread eyelet or thread opening (13, 22, 19) is needed in the thread path, on which the incoming thread must not get caught.
  • the shielding surface A can be set approximately perpendicular to the feed direction.
  • a universal joint or a carad joint could also be used. If the ball joint K in a thread brake device P according to FIG. 6 is used as the direction setting means M, then the base body 1 does not need to be moved around the pass axis f because the shielding surface A can be adjusted in all directions.
  • part of the direction setting means M is formed between the shielding surface A and the holding part 2 of the base body 1 and another part in the support 4 ′ of the base body 1.
  • the shielding surface A is formed by a circular or oval flat plate 11 'made of plastic or sheet metal, in which the thread eyelet 13 on the inlet side is arranged in the center.
  • the shoulder 12 ′′ arranged on the rear of the shielding surface A has two diametrically opposed axle journals 27 which define a transverse axis 27 crossing the passage axis f.
  • the axle journals 27 are held in a frictionally locking manner in pivot bearings 28, expediently fork-shaped pivot bearings.
  • the pivot bearings 28 are on a fork-shaped one Holding part 29 attached, which is integrally connected to the holding part 2.
  • the outlet-side thread eyelet 6 sits in an opening of a base plate 30.
  • the plate 30 has a circular collar 31 which fits into an opening 34 of a base plate 32, e.g. frictional, engages.
  • the fastening means 5 are provided in the base plate 32.
  • a clamping screw 33 secures the rotational position of the base body 1 about the passage axis F.
  • a similar locking screw could also be provided between the journal 27 and the pivot bearings 28 or in the ball joint K in FIG. 6.
  • the shielding surface A is pivoted about the transverse axis 27a and the base body 1 is rotated about the passage axis f until the shielding surface A is approximately perpendicular to the feed direction of the thread.
  • a multi-disk brake instead of the disk brake 3, a multi-disk brake, a crocodile brake, a wrap-around brake, a thread take-up with braking action, a deflection brake or the like could be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Looms (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Branching, Merging, And Special Transfer Between Conveyors (AREA)

Abstract

Dispositif de tension de fil (B), en particulier pour la face distributrice d'un régulateur de fil (F), qui comporte un tendeur (3), avec un axe traversant fixe (f), doté d'une surface de protection (A) comprenant un trou pour le fil (22) placée transversalement par rapport à la direction de passage (R) du fil (Y). Ledit dispositif est doté d'un mécanisme de réglage de la direction (M) de la surface de protection (A) grâce auquel il est possible de régler la position transversale de la surface de protection (A) selon des directions de passage (R1, R2) du fil (Y) désaxées par rapport à l'axe traversant (f). Ce mécanisme de réglage de la direction (M) est également prévu lorsque l'on a une surface de protection (A), destinée aux processus généraux de guidage du fil, qui est fixée de manière stationnaire et dirigée transversalement par rapport à la direction de passage (R) du fil (Y), afin de régler la position transversale de la surface de protection (A) selon la direction de passage donnée (R1, R2) du fil (Y).
EP91905550A 1990-03-06 1991-03-06 Dispositif de tension de fil Expired - Lifetime EP0518934B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9000808A SE9000808A0 (sv) 1990-03-06 1990-03-06 Ingångsgarnbroms till en fournissör, företrädesvis av lagringstyp
SE9000808 1990-03-06
PCT/EP1991/000414 WO1991014031A1 (fr) 1990-03-06 1991-03-06 Dispositif de tension de fil

Publications (2)

Publication Number Publication Date
EP0518934A1 true EP0518934A1 (fr) 1992-12-23
EP0518934B1 EP0518934B1 (fr) 1994-06-08

Family

ID=20378788

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91905550A Expired - Lifetime EP0518934B1 (fr) 1990-03-06 1991-03-06 Dispositif de tension de fil

Country Status (7)

Country Link
US (1) US5335878A (fr)
EP (1) EP0518934B1 (fr)
JP (1) JP2955955B2 (fr)
KR (1) KR0179646B1 (fr)
DE (1) DE59101884D1 (fr)
SE (1) SE9000808A0 (fr)
WO (1) WO1991014031A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5927629A (en) * 1998-02-23 1999-07-27 Dixon; Tony Anti-static tension device
US6439488B1 (en) 2000-11-27 2002-08-27 Bobby Hunter Tensioning device for circular knitting machine
DE10151780C1 (de) * 2001-10-19 2003-05-22 Dornier Gmbh Lindauer Verfahren und Vorrichtung zur Beeinflussung der Fadenbremskraft einer zwischen einem Garnvorratssystem und einem Fadenspeicher einer Webmaschine angeordneten Schussfadenbremse
WO2004000709A1 (fr) * 2002-06-19 2003-12-31 Texkimp Limited Controleur de tension a disques de compensation
FR2957206B1 (fr) * 2010-03-03 2012-12-28 Abb France Dispositif de bobinage
CN102677383A (zh) * 2012-06-08 2012-09-19 慈溪太阳洲纺织科技有限公司 一种针织输纱机
CN105923464B (zh) * 2016-06-26 2018-12-28 桐乡市正辉针织有限公司 一种双环导纱装置
CN110240010A (zh) * 2019-06-26 2019-09-17 西安工程大学 一种高性能纤维的张力控制器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1906937A1 (de) * 1969-02-12 1970-09-17 Meyer Fa Geb Fadenbremse mit Spannungsausgleich
DE2359550A1 (de) * 1972-11-30 1974-06-06 Du Pont Garnzufuehrungsgatter
GB2027456B (en) * 1978-07-26 1982-09-02 Memminger Gmbh Thread supply apparatus for circular knitting machines
US4471917A (en) * 1982-07-20 1984-09-18 Celanese Corporation Balloon-control guide and yarn rewinding process

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9114031A1 *

Also Published As

Publication number Publication date
JPH05504999A (ja) 1993-07-29
DE59101884D1 (de) 1994-07-14
SE9000808A0 (sv) 1991-09-07
WO1991014031A1 (fr) 1991-09-19
US5335878A (en) 1994-08-09
JP2955955B2 (ja) 1999-10-04
KR930700714A (ko) 1993-03-15
EP0518934B1 (fr) 1994-06-08
SE9000808D0 (sv) 1990-03-06
KR0179646B1 (ko) 1999-02-18

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