WO2004083679A1 - Low-noise roller chain - Google Patents

Low-noise roller chain Download PDF

Info

Publication number
WO2004083679A1
WO2004083679A1 PCT/EP2004/002813 EP2004002813W WO2004083679A1 WO 2004083679 A1 WO2004083679 A1 WO 2004083679A1 EP 2004002813 W EP2004002813 W EP 2004002813W WO 2004083679 A1 WO2004083679 A1 WO 2004083679A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
chain
roller chain
damping means
damping
Prior art date
Application number
PCT/EP2004/002813
Other languages
German (de)
French (fr)
Inventor
Markus Kern
Ulrich Becher
Original Assignee
Rexnord Kette Gmbh
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 Rexnord Kette Gmbh filed Critical Rexnord Kette Gmbh
Publication of WO2004083679A1 publication Critical patent/WO2004083679A1/en

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
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/02—Driving-chains
    • F16G13/06—Driving-chains with links connected by parallel driving-pins with or without rollers so called open links
    • 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
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
    • 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
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/14—Construction providing resilience or vibration-damping

Definitions

  • the invention relates to a low-noise roller chain. Roller chains interact with sprockets in drive devices. When operating a chain drive, it is desirable to keep the noise level as low as possible.
  • DE 4 331 165 describes a chain drive in which an elastic body which does not touch the chain is arranged on at least one side of a gearwheel.
  • DE 296 21 083 U1 it is also known in the prior art from DE 296 21 083 U1 to arrange a damping ring on the side of the chain wheel as a damping means, which has a wavy profile, the elevations of which are so high that there is overlap contact with the link plates of the chain. This is intended to dampen the momentum when the chain sleeve or roller hits the tooth flank.
  • the invention is therefore based on the problem of providing improved damping.
  • a damping means is arranged in a roller chain between the bush and the roller of the chain links.
  • the damping means arranged between the bushing and roller which is mostly made of steel, largely absorbs the kinetic energy generated by the Running of the roller chain into the sprocket and when the chain rollers hit the tooth flanks of the sprocket is free.
  • the effective damping of the roller chain according to the invention advantageously advantageously reduces the noise level of the chain drive in a simple manner.
  • the damping means can be at least partially elastically deformable, as a result of which the impact pulse is cushioned particularly effectively.
  • the damping agent can be adapted to the respective roller chain and its use.
  • the surface of the damping means is preferably chosen so that the mobility of the roller around the bushing is not restricted as much as possible. To ensure this, the damping means can also consist of different materials.
  • the damping means can be formed as a coating on the outer surface of the bush facing the roller.
  • the impact impulse that occurs when the roller chain enters the chain sprocket is cushioned by the damping coating, thus minimizing the noise level.
  • the damping coating can be formed, for example, from a plastic layer. It is also possible to provide the roller with a damping coating instead of the bush. Furthermore, both bushing and roller can be provided with a damping coating.
  • the damping means preferably consists of a hollow cylinder arranged between the roller and the bushing. This has the advantage that the
  • Movement of the roller around the sleeve is not restricted due to the mobility of the hollow cylinder.
  • the production of the roller chain is possible without having to change existing manufacturing processes or having to modify conventional parts.
  • the invention further relates to a device, in particular a conveyor, with a drive with a chain wheel and a roller chain according to the invention.
  • a device in particular a conveyor, with a drive with a chain wheel and a roller chain according to the invention.
  • Such a device is characterized by a low noise level during operation.
  • a damping means in the form of a plastic bushing 7 is arranged between the steel bushing 5 and the steel roller 6.
  • the plastic bush 7 absorbs the energy of the impact pulse, which is released when the roller enters the sprocket.
  • the plastic bushing 7 also prevents the sleeve 5 and roller 6 from striking against one another.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gears, Cams (AREA)

Abstract

The invention relates to a low-noise roller chain (1), wherein a damping element is arranged between the bushing and the roller of the chain guide in order to dampen noise.

Description

"Geräuscharme Rollenkette" "Low-noise roller chain"
Die Erfindung betrifft eine geräuscharme Rollenkette. Rollenketten wirken mit Kettenrädern in Antriebsvorrichtungen zusammen. Beim Betrieb eines Kettenantriebs ist es wünschenswert, den Geräuschpegel möglichst gering zu halten.The invention relates to a low-noise roller chain. Roller chains interact with sprockets in drive devices. When operating a chain drive, it is desirable to keep the noise level as low as possible.
Im Stand der Technik sind einige Lösungen zur Minderung des Geräuschpegels von Antrieben bekannt. So beschreibt die DE 4 331 165 einen Kettenantrieb, bei dem an mindestens einer Seite eines Zahnrades ein elastischer, die Kette nicht berührender Körper angeordnet ist. Um den Verschleiß zu mindern und das Geräusch zu dämpfen, ist es im Stand der Technik ferner aus der DE 296 21 083 U1 bekannt, seitlich am Kettenrad als Dämpfungsmittel einen Dämpfungsring anzuordnen, der ein wellenförmiges Profil aufweist, wobei dessen Erhebungen so hoch sind, daß sich ein Überdeckungs- kontakt mit den Laschen der Kette ergibt. Dadurch soll der Impuls beim Aufschlagen der Kettenhülse- bzw. -rolle auf die Zahnflanke gedämpft werden.Some solutions for reducing the noise level of drives are known in the prior art. For example, DE 4 331 165 describes a chain drive in which an elastic body which does not touch the chain is arranged on at least one side of a gearwheel. In order to reduce wear and dampen the noise, it is also known in the prior art from DE 296 21 083 U1 to arrange a damping ring on the side of the chain wheel as a damping means, which has a wavy profile, the elevations of which are so high that there is overlap contact with the link plates of the chain. This is intended to dampen the momentum when the chain sleeve or roller hits the tooth flank.
Durch diese Dämpfungsmaßnahmen läßt sich nur bedingt eine Geräuschminderung erzielen. Daher besteht Bedarf an Verbesserungen und Weiterentwicklungen.These damping measures can only partially achieve noise reduction. Therefore there is a need for improvements and further developments.
Der Erfindung liegt daher das Problem zugrunde, eine verbesserte Dämpfung bereitzustellen.The invention is therefore based on the problem of providing improved damping.
Um dieses Problem zu lösen, ist bei einer Rollenkette zwischen der Buchse und der Rolle der Kettenglieder ein Dämpfungsmittel angeordnet. Das zwischen der zumeist aus Stahl bestehenden Buchse und Rolle angeordnete Dämpfungsmittel absorbiert weitestgehend die kinetische Energie, die beim Einlaufen der Rollenkette ins Kettenrad und beim Aufschlagen der Kettenrollen auf die Zahnflanken des Kettenrades frei wird. Durch die effektive Dämpfung der erfindungsgemäßen Rollenkette wird der Geräuschpegel des Kettenantriebes in vorteilhafter Weise auf einfache Weise reduziert.In order to solve this problem, a damping means is arranged in a roller chain between the bush and the roller of the chain links. The damping means arranged between the bushing and roller, which is mostly made of steel, largely absorbs the kinetic energy generated by the Running of the roller chain into the sprocket and when the chain rollers hit the tooth flanks of the sprocket is free. The effective damping of the roller chain according to the invention advantageously advantageously reduces the noise level of the chain drive in a simple manner.
Als Werkstoffe für das Dämpfungsmittel eignen sich insbesondere Kunststoffe und Gummimaterialien. Das Dämpfungsmittel kann zumindest teilweise elastisch verformbar sein, wodurch der Aufschlagimpuls besonders effektiv abgefedert wird. Durch Wahl der Werkstoffhärte kann das Dämp- fungsmittel der jeweiligen Rollenkette und an ihrer Verwendung angepaßt werden. Die Oberfläche des Dämpfungsmittels ist vorzugsweise so gewählt, daß die Bewegungsfähigkeit der Rolle um die Buchse möglichst nicht eingeschränkt wird. Um dies zu gewährleisten, kann das Dämpfungsmittel auch aus verschiedenen Materialien bestehen.Plastics and rubber materials are particularly suitable as materials for the damping agent. The damping means can be at least partially elastically deformable, as a result of which the impact pulse is cushioned particularly effectively. By choosing the material hardness, the damping agent can be adapted to the respective roller chain and its use. The surface of the damping means is preferably chosen so that the mobility of the roller around the bushing is not restricted as much as possible. To ensure this, the damping means can also consist of different materials.
Das Dämpfungsmittel kann als Beschichtung auf der der Rolle zugewandten Außenoberfläche der Buchse ausgebildet sein. Durch die dämpfende Beschichtung wird der beim Einlaufen der Rollenkette in das Kettenrad auftretende Aufschlagimpuls abgefedert und somit der Geräuschpegel mini- miert. Die dämpfende Beschichtung kann beispielsweise aus einer Kunst- stoffschicht gebildet sein. Es besteht auch die Möglichkeit, die Rolle anstatt der Buchse mit einer dämpfenden Beschichtung auszustatten. Ferner können sowohl Buchse als auch Rolle mit einer dämpfenden Beschichtung versehen sein. Diese Ausführungsformen besitzen den Vorteil, daß herkömmli- ehe Teile (Buchse und Rolle) durch geringfügige ModifizierungenThe damping means can be formed as a coating on the outer surface of the bush facing the roller. The impact impulse that occurs when the roller chain enters the chain sprocket is cushioned by the damping coating, thus minimizing the noise level. The damping coating can be formed, for example, from a plastic layer. It is also possible to provide the roller with a damping coating instead of the bush. Furthermore, both bushing and roller can be provided with a damping coating. These embodiments have the advantage that conventional parts (bush and roller) due to slight modifications
(Beschichtungen) derart verändert werden können, daß die erfindungsgemäße Dämpfungswirkung erzielt wird.(Coatings) can be changed so that the damping effect according to the invention is achieved.
Vorzugsweise besteht das Dämpfungsmittel aus einem zwischen der Rolle und der Buchse angeordnetem Hohizylinder. Dies bietet den Vorteil, daß dieThe damping means preferably consists of a hollow cylinder arranged between the roller and the bushing. This has the advantage that the
Bewegung der Rolle um die Hülse aufgrund der Beweglichkeit des Hohlzy- linders nicht eingeschränkt wird. Durch Einsatz eines solchen Zusatzteils ist ferner die Herstellung der Rollenkette möglich, ohne daß bestehende Herstellungsprozesse umgestellt werden oder übliche Teile modifiziert werden müßten.Movement of the roller around the sleeve is not restricted due to the mobility of the hollow cylinder. By using such an additional part furthermore, the production of the roller chain is possible without having to change existing manufacturing processes or having to modify conventional parts.
Die Erfindung betrifft ferner eine Vorrichtung, insbesondere einen Förderer, mit einem Antrieb mit einem Kettenrad und einer erfindungsgemäßen Rollenkette. Eine solche Vorrichtung zeichnet sich durch einen geringen Geräuschpegel im Betrieb aus.The invention further relates to a device, in particular a conveyor, with a drive with a chain wheel and a roller chain according to the invention. Such a device is characterized by a low noise level during operation.
Die Erfindung wird nachfolgend anhand einer zeichnerischen Darstellung erläutert. Sie zeigt den Aufbau einer erfindungsgemäßen Rollenkette 1 mit Innen- 2 und Außenlaschen 3 sowie einem die einzelnen Kettenglieder verbindenden Kettenbolzen 4. Zwischen der Stahlbuchse 5 und der Stahlrolle 6 ist erfindungsgemäß ein Dämpfungsmittel in Gestalt einer Kunststoffbuchse 7 angeordnet. Die Kunststoffbuchse 7 absorbiert die Energie des Aufprallimpulses, die beim Einlaufen der Rolle in das Kettenrad frei wird. Durch die Kunststoffbuchse 7 wird ferner das Aneinanderschlagen von Hülse 5 und Rolle 6 verhindert. Insgesamt wird der Geräuschpegel eines Kettenantriebes, bei dem eine erfindungsgemäße Rollenkette verwendet wird, effektiv gesenkt. Durch Anordnung zusätzlicher Dämpfungsmittel, beispielsweise am Kettenrad selber, kann der Geräuschpegel weiter reduziert werden. The invention is explained below with reference to a drawing. It shows the structure of a roller chain 1 according to the invention with inner 2 and outer plates 3 and a chain pin 4 connecting the individual chain links. According to the invention, a damping means in the form of a plastic bushing 7 is arranged between the steel bushing 5 and the steel roller 6. The plastic bush 7 absorbs the energy of the impact pulse, which is released when the roller enters the sprocket. The plastic bushing 7 also prevents the sleeve 5 and roller 6 from striking against one another. Overall, the noise level of a chain drive in which a roller chain according to the invention is used is effectively reduced. By arranging additional damping means, for example on the chain wheel itself, the noise level can be reduced further.

Claims

Patentansprüche: claims:
1. Rollenkette mit Laschen, Buchsen und Rollen, dadurch gekennzeichnet, daß zwischen Buchse (5) und Rolle (6) der Kettenglieder wenig- stens ein Dämpfungsmittel (7) angeordnet ist.1. Roller chain with plates, bushes and rollers, characterized in that at least one damping means (7) is arranged between the bush (5) and roller (6) of the chain links.
2. Rollenkette nach Anspruch 1 , dadurch gekennzeichnet, daß das Dämpfungsmittel (7) elastisch verformbar ist.2. Roller chain according to claim 1, characterized in that the damping means (7) is elastically deformable.
3. Rollenkette nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Dämpfungsmittel (7) als Beschichtung auf der Außenoberfläche der Buchse (5) und/oder als Beschichtung auf der Innenseite der Rolle (6) ausgebildet ist.3. Roller chain according to claim 1 or 2, characterized in that the damping means (7) is designed as a coating on the outer surface of the bushing (5) and / or as a coating on the inside of the roller (6).
4. Rollenkette nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Dämpfungsmittel (7) als Hohizylinder ausgebildet ist.4. Roller chain according to one of claims 1 to 3, characterized in that the damping means (7) is designed as a hollow cylinder.
5. Rollenkette nach einem der Ansprüche 1 bis 4, daß das Dämpfungsmittel (7) aus Kunststoff oder Gummi besteht.5. Roller chain according to one of claims 1 to 4, that the damping means (7) consists of plastic or rubber.
6. Vorrichtung, aufweisend eine Antriebsvorrichtung mit einer Rollenkette nach einem der Ansprüche 1 bis 5. 6. The device, comprising a drive device with a roller chain according to one of claims 1 to 5.
PCT/EP2004/002813 2003-03-20 2004-03-18 Low-noise roller chain WO2004083679A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003112339 DE10312339A1 (en) 2003-03-20 2003-03-20 Low-noise roller chain
DE10312339.3 2003-03-20

Publications (1)

Publication Number Publication Date
WO2004083679A1 true WO2004083679A1 (en) 2004-09-30

Family

ID=32945999

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/002813 WO2004083679A1 (en) 2003-03-20 2004-03-18 Low-noise roller chain

Country Status (2)

Country Link
DE (1) DE10312339A1 (en)
WO (1) WO2004083679A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009153105A1 (en) * 2008-06-16 2009-12-23 Kone Corporation Drive chain having sliding bushing
DE102015212031A1 (en) 2015-06-29 2016-12-29 Thyssenkrupp Ag Step chain for escalators and passenger conveyor with such a step chain

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4550732B2 (en) 2005-12-20 2010-09-22 株式会社椿本チエイン Solid lubrication oil-free chain
DK2146033T3 (en) * 2008-07-18 2017-08-14 Windowmaster Int As Pull-push chain and actuator
DE102012009330B4 (en) * 2012-05-10 2017-08-24 Remmert Gmbh & Co. Kg Drive chain, drive assembly and thus formed storage unit
DE102012017400A1 (en) * 2012-09-03 2013-12-05 Heidelberger Druckmaschinen Ag Roller chain for e.g. rotary sheet printing machine, has sleeve bearing that is arranged between bush and roller, and is made of noise-damping material such as plastic

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE417971A (en) *
FR808473A (en) * 1935-10-25 1937-02-08 Advanced chain
FR1294264A (en) * 1961-04-13 1962-05-26 Sedis Transmissions Mec Advanced transmission chain
GB922307A (en) * 1961-07-15 1963-03-27 Werner Ruberg Roller chain link
EP0214948A2 (en) * 1985-09-12 1987-03-18 Electrabel Roller chain with bushings
DE4331165A1 (en) 1992-09-14 1994-04-21 Tsubakimoto Chain Co Chain drive device
DE29621083U1 (en) 1996-12-04 1998-04-02 Joh. Winklhofer & Söhne GmbH und Co KG, 81369 München Damped sprocket
US5921880A (en) * 1996-09-02 1999-07-13 Tsubakimoto Chain Co. Low noise roller chain
US6074318A (en) * 1996-03-22 2000-06-13 Tsubakimoto Chain Co. Low-noise roller chain having rollers which include elastic member protrusions to prevent collision of the rollers with inner plates

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB483669A (en) * 1935-10-25 1938-04-25 Ettore Bugatti Improvements in or relating to chains
DE1039319B (en) * 1956-04-04 1958-09-18 Ruberg & Renner Roller chain joint
JPS5735543U (en) * 1980-08-08 1982-02-24
JP3122519B2 (en) * 1992-03-10 2001-01-09 本田技研工業株式会社 Roller chain
JP2587152Y2 (en) * 1993-09-30 1998-12-14 株式会社椿本チエイン A device for preventing free movement of a resin sleeve fitted on the inner peripheral surface of a rotation shaft insertion hole of a member through which the rotation shaft is inserted.
JPH09105443A (en) * 1995-08-07 1997-04-22 Tsubakimoto Chain Co Low noise roller chain
DE19704827A1 (en) * 1997-02-08 1998-08-13 Dornier Gmbh Lindauer Roller chain link and transport chain with roller chain links

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE417971A (en) *
FR808473A (en) * 1935-10-25 1937-02-08 Advanced chain
FR1294264A (en) * 1961-04-13 1962-05-26 Sedis Transmissions Mec Advanced transmission chain
GB922307A (en) * 1961-07-15 1963-03-27 Werner Ruberg Roller chain link
EP0214948A2 (en) * 1985-09-12 1987-03-18 Electrabel Roller chain with bushings
DE4331165A1 (en) 1992-09-14 1994-04-21 Tsubakimoto Chain Co Chain drive device
US6074318A (en) * 1996-03-22 2000-06-13 Tsubakimoto Chain Co. Low-noise roller chain having rollers which include elastic member protrusions to prevent collision of the rollers with inner plates
US5921880A (en) * 1996-09-02 1999-07-13 Tsubakimoto Chain Co. Low noise roller chain
DE29621083U1 (en) 1996-12-04 1998-04-02 Joh. Winklhofer & Söhne GmbH und Co KG, 81369 München Damped sprocket

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009153105A1 (en) * 2008-06-16 2009-12-23 Kone Corporation Drive chain having sliding bushing
CN102066229A (en) * 2008-06-16 2011-05-18 通力股份公司 Drive chain having sliding bushing
DE102015212031A1 (en) 2015-06-29 2016-12-29 Thyssenkrupp Ag Step chain for escalators and passenger conveyor with such a step chain
WO2017001480A1 (en) 2015-06-29 2017-01-05 Thyssenkrupp Elevator Ag Step chain for escalators, and person conveyor device having a step chain of this type
US10464785B2 (en) 2015-06-29 2019-11-05 Thyssenkrupp Elevator Ag Step chain for escalators, and person conveyor device having a step chain of this type

Also Published As

Publication number Publication date
DE10312339A1 (en) 2004-10-07

Similar Documents

Publication Publication Date Title
DE2824104C2 (en) DEVICE FOR DAMPING THE NOISE THAT GENERATES A CHAIN THAT COMES WITH A SPROCKET
DE2920002C2 (en) Device for attenuating the noise produced by a chain meshing with a sprocket
EP2336423B1 (en) Attenuation element for rail construction with sliding layer, railway rail system with attenuation element and method for producing an attenuation element
EP2635825A1 (en) Drive belt for transmitting a drive movement, and method for producing a drive belt
DE3046459A1 (en) SEALING STRIP
DE3122815A1 (en) TOOL HANDLE
EP1843061B1 (en) Chain for a chain drive
WO2004083679A1 (en) Low-noise roller chain
WO2017001480A1 (en) Step chain for escalators, and person conveyor device having a step chain of this type
DE102011109878A1 (en) Rack and pinion steering gear
DE102018202809B4 (en) Roller gear
DE202005017406U1 (en) Sprocket wheel for vehicle`s control chain e.g. roller chain, drives, has teeth deforming buffers and or spring under effect of force/moments in circumferential direction and supported on flanges of arms of hub
DE102017217721A1 (en) Passenger conveyor with roller and roller guide of the step chain and method for guiding a step chain with rollers and protective rollers
EP0942200B1 (en) Chain wheel with damping means
DE102004013207A1 (en) Tension/slide rail for chain drives of IC engines for motor vehicles has core of elastically flexible plastic on end section to dampen chain vibrations
DE20207342U1 (en) Drive wheel for a crawler belt vehicle drive
DE29909603U1 (en) Sprocket for articulated chains and damping device
DE2557109A1 (en) TENSIONING DEVICE FOR THE DISTRIBUTION CHAIN ON COMBUSTION MACHINERY AND THEIR MANUFACTURING PROCESS
EP1816293A2 (en) Locking device for holding a sliding door on a motor vehicle in the open position
DE9012707U1 (en) Flexible band-shaped tension member for tracked vehicle undercarriages
DE10101195C5 (en) slide
DE9407770U1 (en) Drive chain
WO2004083685A1 (en) Chain wheel with damping means
DE4232754C2 (en) Device for a sprocket or the like
DE20111493U1 (en) Sprocket

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase