EP0587713B1 - Unite de balayage - Google Patents

Unite de balayage Download PDF

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Publication number
EP0587713B1
EP0587713B1 EP92912344A EP92912344A EP0587713B1 EP 0587713 B1 EP0587713 B1 EP 0587713B1 EP 92912344 A EP92912344 A EP 92912344A EP 92912344 A EP92912344 A EP 92912344A EP 0587713 B1 EP0587713 B1 EP 0587713B1
Authority
EP
European Patent Office
Prior art keywords
sweeping
unit according
guide
belts
sweeping unit
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.)
Expired - Lifetime
Application number
EP92912344A
Other languages
German (de)
English (en)
Other versions
EP0587713A1 (fr
Inventor
Kurt Zachhuber
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.)
Innoserve Schutzrechtmanagement und Consultin GmbH
Original Assignee
ZACHHUBER Kurt
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 ZACHHUBER Kurt filed Critical ZACHHUBER Kurt
Publication of EP0587713A1 publication Critical patent/EP0587713A1/fr
Application granted granted Critical
Publication of EP0587713B1 publication Critical patent/EP0587713B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4044—Vacuuming or pick-up tools; Squeegees
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/02—Floor surfacing or polishing machines
    • A47L11/20—Floor surfacing or polishing machines combined with vacuum cleaning devices
    • A47L11/204—Floor surfacing or polishing machines combined with vacuum cleaning devices having combined drive for brushes and for vacuum cleaning
    • A47L11/206—Floor surfacing or polishing machines combined with vacuum cleaning devices having combined drive for brushes and for vacuum cleaning for rotary disc brushes
    • A47L11/2065—Floor surfacing or polishing machines combined with vacuum cleaning devices having combined drive for brushes and for vacuum cleaning for rotary disc brushes having only one disc brush
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4047—Wound-up or endless cleaning belts
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4052—Movement of the tools or the like perpendicular to the cleaning surface
    • A47L11/4058—Movement of the tools or the like perpendicular to the cleaning surface for adjusting the height of the tool

Definitions

  • the present invention relates to a sweeping unit, in particular as an additional device for a scrubber drier, with at least one driven sweeping device arranged on a guide, the guide consisting of several elements, one part of which is fixed, another part for changing the sweeping width of the sweeping unit is.
  • Such a sweeping unit is known from FR-2 652 100 A1. It has two sweeping devices, each of which comprises a band covered with bristles, which rotates around two rollers forming the respective guide with a vertical axis of rotation. One of the rollers is fixed, the other is pivotable. To reduce the working width, the two positionally variable rollers of the sweeping devices are aligned in the known sweeping unit with the working direction, i. H. swung forward, inward.
  • Another sweeping unit known from DD 269 549 has a transverse brush belt which is guided around rollers with a horizontal axis each side of a centrally positioned suction mouth.
  • the two brush belts can be swiveled in a horizontal plane into a V position that is open to the front so that the sweeping unit can pass through narrow passages.
  • the guide elements of the two brush belts, each related to a belt guide, are not changeable with respect to one another.
  • the known sweeping units are not provided as an additional device for a scrubber drier.
  • the present invention has for its object to provide a sweeping unit, which allows mechanical sweeping with variable working width in the interior and exterior, so that its contour can be adjusted automatically.
  • the sweeping unit should expediently be able to be used in connection with any scrubber-drier.
  • a particular object of the present invention is to use the sweeping unit in connection with a scrubber drier with a variable working width, which is the subject of the German patent P 41 03 087. Just like the working width of the scrubber drier, the working width of the sweeping unit should also be variable.
  • the stated object is achieved in a generic sweeping unit in that the position-changing guide elements can be pivoted or displaced inward in relation to the fixedly arranged guide elements associated with the sweeping device in question, with the sweeping width being reduced in the direction opposite to the working direction.
  • “guidance” of the sweeping device is understood to mean the sum of the individual elements that serve to guide and adjust the width of the sweeping device; deflection, pressure, guide rollers, sliding surfaces, guide rails and the like are particularly suitable as guide elements.
  • the sweeper can be hand-held or powered by various brooms the field of cleaning machines of known designs include, for example, disc brooms rotating about vertical axes or roller brooms rotating about horizontal axes or endless brush strips covered with bristles.
  • endless sweeping belts are used, it is expedient that at least two endless sweeping belts (1) are provided which are arranged in an upright arrangement on the elements of the guide.
  • the position of the guide can be changed within the sweeping unit in a variety of ways; for example, the position-changing elements of the guide can be pivoted so that they enclose a variable angle with the working direction; furthermore, in the event that several guides provided with sweeping belts are provided, these can be moved sideways on the sweeping unit be stored; Finally, the position of the guide can be changed by the fact that it is deformable in itself, ie the position of the individual elements of the guide can be changed with respect to one another, so that the path of the revolving sweeping belt has a different shape (straight, inward / outward or forward) / curved backwards).
  • the components connecting the elements of the guide can consist, for example, of a flexible material or can be made up of articulated members.
  • the formation of the broom as a revolving sweeping belt is particularly advantageous if a guide which is deformable in itself is provided; because in this way, the position of the guide and the broom can be adapted to the desired working width in a particularly simple manner.
  • the design of the broom as a sweeping belt has the particular advantage that the detected dirt - more directly than with a roller broom (sweeping roller) and plate broom - is conveyed to a narrowly limited area, namely the deflection point of the sweeping belt; the suction can thus be limited to this narrowly limited area, ie the suction mouth can be dimensioned accordingly small, which leads to a low suction air throughput and thus in turn leads to a low power requirement of the suction unit.
  • the sweeping unit according to the invention is also to be operated in combination with a mains-independent scrubber drier with a correspondingly limited battery capacity.
  • the sweeping unit according to the invention preferably has at least two endless sweeping belts rotating in an upright arrangement on the elements of the guide, with associated guides.
  • at least one pair of sweeping belts is preferably provided, in which the sweeping belts are rotated in opposite directions with respect to one another and convey the dirt to a suction mouth arranged between the two sweeping belts of a pair of suction devices receiving the sweepings. Accordingly, a deflection point of the two sweeping belts of the pair are adjacent to each other and arranged near the common suction mouth.
  • the pair of sweeping belts in particular are followed by two further sweeping belts in a staggered arrangement, the two front sweeping belts being fixed and the downstream sweeping belts being laterally displaceable and / or pivotable are suspended from the sweeping unit; this makes it possible to form each individual guide rigidly, that is to say in particular to build up all the elements of a guide on a common rigid support which is suspended either fixedly or in a positionally variable manner within the sweeping unit.
  • the guides as such can also be deformable, ie the individual elements of the guides can change their position with respect to one another.
  • the contour of the sweeping belt rotating around the guide elements changes.
  • the carrier connecting the guide elements to one another expediently consists of a plurality of sections which are connected to one another in an articulated manner.
  • a suction mouth is provided at each deflection point of the sweeping belts. Because not only the front section of the sweeping belt in the working direction picks up dirt, but also the rear section to a certain extent conveys dirt to the corresponding deflection point, after a 100% sweeping performance is technically not feasible through the front sweeping belt section.
  • a scraper hook against which the bristles of the sweeping belts run is expediently provided in the area of each suction mouth. They have the effect that the dirt loosens better from the bristles and can be absorbed by the suction mouths of the suction device.
  • the sweeping performance can be further increased in that the bristles of the sweeping belts are inclined against their direction of rotation, i.e. that the bristles point obliquely forward in the direction of rotation of the sweeping belts.
  • a scraper is provided in the area of the suction mouths and / or directly along the rear of the sweeping belt. This is conveniently a usual over Bottom surface sliding band-shaped elastic bar, which is changeable in position together with the sweeping belt
  • a deflector bar is expediently arranged in the working direction in front of the sweeping belts, which, when encountering an obstacle, changes the position of the carrier in the sense of reducing the sweeping width.
  • the deflector bar can be designed as a button which, when hitting an obstacle, actuates a switch which in turn controls an electrical, pneumatic, hydraulic or similar adjusting device for pivoting or shifting the corresponding, assigned reversing belt guide.
  • the deflector bracket particularly in the case of smaller sweeping units, can be designed so that it immediately shifts or swivels the associated sweeping belt guide if it encounters an obstacle, i.e. the corresponding guide is moved or moved as far as possible by the obstacle hitting the deflector bracket . pivoted until the obstacle can be passed through the sweeping unit.
  • the sweeping unit can have an additional fog system.
  • the liquid to be atomized is drawn off from a storage container by means of a pump and sprayed via pressure lines which are laid along the sweeping belts and have a plurality of atomizing nozzles.
  • the sweeping unit according to the invention can be built on a chassis and thus forms an independent sweeper.
  • a scrubber-drier unit with a variable working width in accordance with German patent P 41 03 087 and a sweeper unit according to the invention on a common chassis, so that a combined sweeper and scrubber-drier machine is created.
  • the working width of the sweeping unit and the scrubbing suction unit are coordinated with one another, ie the parts of both units that are variable in position are coupled to one another.
  • the fasteners to be used for the quick attachment of the sweeping unit to the scrubber drier are known as such in the prior art.
  • the scrubber drier after not being the subject of the present application, is shown with thin lines, while the sweeping unit according to the invention is shown with bold lines.
  • the sweeping unit shown in the drawing has two endless sweeping belts 1, which have bristles 2 at their lower edges are equipped.
  • the sweeping belts consist of a flexible, stretch-resistant band material or of articulated, chain-like elements.
  • Each of the two sweeping belts runs between a drive roller 3 and a deflection roller 4, which define the two deflection points.
  • a drive motor 5 is provided in a lying arrangement, which is connected to the respective drive roller 3 via an angular gear 6.
  • Two guide rollers 7 and guide surfaces 8 are additionally provided for guiding the sweeping belt.
  • the suction unit comprises the suction tank 9 on which the suction motor 10 driving a suction fan (not shown) is constructed.
  • a filter is installed on the suction tank as a separating device 11, which separates the dirt absorbed by the suction air from it and retains it in the suction tank.
  • the front, central suction mouth 13 is between the two front ends of the sweeping belts, where they rotate around the drive rollers 3, arranged.
  • the rear suction mouths 14 are arranged immediately behind the deflection points of the sweeping belts, which are defined by the deflection rollers 4.
  • the naturally aspirated motor is powered by a power source (not shown).
  • tension levers 19 pivotable with respect to the handlebars 18 about a vertical axis.
  • a spring 20 arranged between each link 18 and the associated tensioning lever 19 pretensions the tensioning lever to such an extent that the sweeping belt 1 has its optimal tension.
  • a strut 21 is provided on each tensioning lever 19 and serves to hold the respective outer, rear suction mouth 14.
  • the drive motors 5, guide rollers 7 and guide surfaces 8 of each sweeping belt 1, as well as the suction tank 9 and the front suction mouth 13 are constructed on a common mounting plate 22 which is fastened on the cover 23 of the main brush 15 of the scrubber-suction unit.
  • the mounting plate in FIG. 1 is drawn broken on the right side of the sweeping unit.
  • the sweeping device of the sweeping unit can be driven by motor or by hand.
  • a gear can be provided for this purpose, which is coupled in the usual way to the wheels of the pushed sweeping unit.
  • a battery for the electric motor drive of the suction fan for the suction unit be provided.
  • another pick-up device for the sweepings can be considered, such as a bristle-covered pick-up roller, which conveys the swept goods backwards, preferably via a ramp that ends near the floor or grazes on the floor surface, into a sweeping-goods bin connected to it.
  • a bristle-covered pick-up roller which conveys the swept goods backwards, preferably via a ramp that ends near the floor or grazes on the floor surface, into a sweeping-goods bin connected to it.
  • Fig. 4 shows a top view of the front half of a sweeper whose sweeping unit does not require a suction unit. Instead, it has a sweeping roller 25 which rotates about a horizontal axis 26 which runs transversely to the longitudinal axis 27 of the sweeper.
  • the sweeping roller 25 conveys the sweepings detected between the front ends of the two sweeping belts 1 from bottom to top via a scraper strip 29 which ends at the bottom with its end edge 28 and rises from there into a sweeping hopper 30 connected to it.
  • this is in the The upper drawing level is shown in the extended position, the lower one is shown in the pivoted position.
  • Deflection roller 32 can be pivoted in accordance with double arrow P, as a result of which the variable sweeping width of the sweeper is realized.
  • a scraper 33 is also drawn in with a dashed line, which moves with the pivotable rear section of the sweeping belt.

Landscapes

  • Cleaning In General (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Polarising Elements (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)
  • Vehicle Body Suspensions (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Pinball Game Machines (AREA)
  • Physical Deposition Of Substances That Are Components Of Semiconductor Devices (AREA)
  • Massaging Devices (AREA)

Claims (20)

  1. Unité de balayage pour une machine de balayage, notamment utilisée en tant que dispositif auxiliaire pour une machine aspirante de nettoyage, comportant au moins un dispositif entraîné de balayage (1,2), disposé sur un guide (3,4,7), le guide étant constitué de plusieurs éléments, une partie des éléments étant fixes et une autre partie étant montée de manière que sa position puisse être modifiée, afin de modifier la largeur de balayage de l'unité de balayage, caractérisée en ce que les éléments de guidage (3,4), dont la position peut être modifiée, peuvent être pivotés ou déplacés vers l'intérieur dans une direction opposée à la direction de travail, par rapport aux éléments de guidage ( 7) montés fixes et associés au dispositif de balayage considéré, lors d'une réduction de la largeur de balayage.
  2. Unité de balayage selon la revendication 1, caractérisée en ce que le ou les dispositifs de balayage comportent des balais à patin, des balais-brosses et/ou des bandes d'essuyage garnies de poils.
  3. Unité de balayage selon la revendication 2, caractérisée par le fait qu'il est prévu au moins deux bandes sans fin de balayage (1), qui circulent, en étant disposées de chant devant les éléments des guides.
  4. Unité de balayage selon la revendication 3, caractérisée en ce que les bandes de balayage (1) et les guides associés sont disposés par couples, d'une manière symétrique entre eux par rapport à leur direction de travail.
  5. Unité de balayage selon la revendication 4, caractérisée en ce qu'on peut modifier les positions des guides, indépendamment l'un de l'autre.
  6. Unité de balayage selon la revendication 4, caractérisée en ce que chaque guide présente une partie rigide, qui est disposée en avant dans la direction de balayage, et une partie disposée en aval dans la direction de balayage et qui peut pivoter latéralement.
  7. Unité de balayage selon la revendication 3, dans laquelle au moins une embouchure d'aspiration d'un dispositif d'aspiration recevant la matière balayée est associée au dispositif de balayage, caractérisée en ce que deux bandes de balayage (1) sont disposées symétriquement l'une par rapport à l'autre en amont dans la direction de balayage et sont entraînées de manière à tourner dans des sens opposés et qu'entre les points de renvoi avant, voisins, associés, des deux bandes de balayage, est disposée une embouchure commune centrale d'aspiration (13).
  8. Unité de balayage selon la revendication 3, caractérisée en ce qu'une embouchure d'aspiration (13,14) est prévue au niveau de chaque point de renvoi des bandes de balayage (1).
  9. Unité de balayage selon la revendication 3, caractérisée en ce que dans la zone des embouchures d'aspiration (13,14) sont disposés des crochets de raclage, contre lesquels circulent les poils (2) des bandes d'essuyage (1).
  10. Unité de balayage selon la revendication 3, caractérisée en ce que les poils des bandes de balayage sont inclinés obliquement vers l'avant par rapport à leur direction de circulation (A).
  11. Unité de balayage selon la revendication 3, caractérisée en ce qu'en amont de chaque dispositif de balayage dans la direction de travail est disposé un étrier de refoulement, qui, lors de la rencontre contre un obstacle, déclenche une modification de la position du guide dans le sens d'une réduction de la largeur de balayage de l'unité de balayage.
  12. Unité de balayage selon la revendication 1, caractérisée en ce qu'il est prévu un système de projection de brouillard comportant de buses de projection de brouillard disposées dans la zone du dispositif d'essuyage.
  13. Unité de balayage selon la revendication 1, caractérisée en ce qu'elle est montée sur un châssis.
  14. Unité de balayage selon la revendication 1, caractérisée en ce qu'elle comporte des moyens de fixation pour un montage rapide sur une machine aspirante de nettoyage.
  15. Unité de balayage selon la revendication 1, caractérisée en ce qu'elle est montée sur un châssis, qui porte simultanément une unité aspirante de nettoyage possédant une largeur de travail variable, les largeurs de travail de l'unité de balayage et de l'unité aspirante de nettoyage sont associées entre elles.
  16. Unité de balayage selon la revendication 15, caractérisée en ce qu'il est prévu deux bandes de balayage (1), dont les points arrière de renvoi sont accouplés mécaniquement respectivement à une brosse de nettoyage, dont la position est variable, de l'unité aspirante de nettoyage.
  17. Unité de balayage selon la revendication 16, caractérisée en ce que les galets de renvoi (4) sont disposés sur des leviers de serrage (19), qui sont articulés sur des leviers articulés, qui portent les deux brosses de nettoyage, dont la position peut être modifiée, de l'unité aspirante de nettoyage.
  18. Unité de balayage selon la revendication 6, caractérisée en ce que les éléments du guide, qui sont disposés de telle sorte que leur position ne peut pas être modifiée, ainsi que les composants de l'unité d'aspiration, dont les positions ne peuvent pas être modifiées, sont disposés sur une plaque de montage commune.
  19. Unité de balayage selon la revendication 3, caractérisée en ce que les éléments du guide sont formés respectivement par des galets de guidage (3,4,7) ou des surfaces de guidage (8), qui tournent autour d'axes verticaux.
  20. Unité de balayage selon la revendication 3, caractérisée en ce qu'une racle (33) est prévue au voisinage des embouchures d'aspiration (13,14) et/ou directement le long de la face arrière de la bande de balayage (1).
EP92912344A 1991-06-07 1992-06-09 Unite de balayage Expired - Lifetime EP0587713B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4118708 1991-06-07
DE4118708A DE4118708C1 (fr) 1991-06-07 1991-06-07
PCT/EP1992/001294 WO1992021275A1 (fr) 1991-06-07 1992-06-09 Unite de balayage

Publications (2)

Publication Number Publication Date
EP0587713A1 EP0587713A1 (fr) 1994-03-23
EP0587713B1 true EP0587713B1 (fr) 1995-09-27

Family

ID=6433391

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92912344A Expired - Lifetime EP0587713B1 (fr) 1991-06-07 1992-06-09 Unite de balayage

Country Status (13)

Country Link
US (1) US5495638A (fr)
EP (1) EP0587713B1 (fr)
JP (1) JPH06508046A (fr)
CN (1) CN1051126C (fr)
AT (1) ATE128338T1 (fr)
AU (1) AU667812B2 (fr)
CA (1) CA2110811C (fr)
DE (2) DE4118708C1 (fr)
DK (1) DK0587713T3 (fr)
ES (1) ES2079193T3 (fr)
HU (1) HU217274B (fr)
RU (1) RU2077862C1 (fr)
WO (1) WO1992021275A1 (fr)

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CN102162220B (zh) * 2011-02-15 2012-05-30 石河子大学 一种扫宽可调的小型清扫车
JP5810215B2 (ja) * 2011-07-22 2015-11-11 アルフレッド ケルヒャー ゲーエムベーハー ウント コンパニー カーゲー フィルタ清浄用圧力容器を有する電動掃除機
EP2817104B1 (fr) * 2012-02-20 2023-04-05 Alfred Kärcher SE & Co. KG Tête de nettoyage de surface et élément de résistance à l'écoulement pour tête de nettoyage de surface
FR2993189B1 (fr) * 2012-07-12 2015-05-29 Ecodrop Appareil de nettoyage de parois planes
CN103417164B (zh) * 2013-04-28 2017-04-05 吴晓栋 一种包含擦拭功能的自动清洁装置
CN111603094B (zh) * 2014-02-28 2022-05-13 三星电子株式会社 清扫机器人及远程控制器
EP2954817B1 (fr) * 2014-06-11 2016-10-26 Hako GmbH Machine de nettoyage du sol
CN104209190A (zh) * 2014-08-30 2014-12-17 常州市群星印刷有限公司 空气净化器
CN104235039A (zh) * 2014-10-08 2014-12-24 潘彤彤 一种带扫地功能电风扇
CN104723189B (zh) * 2014-10-31 2017-10-24 杨忠革 全自动石材地面清洗翻新结晶保养机
DE102017118402A1 (de) * 2017-08-11 2019-02-14 Vorwerk & Co. Interholding Gmbh Sich selbsttätig fortbewegendes Bodenbearbeitungsgerät
CN109083064B (zh) * 2018-09-11 2023-05-23 辽宁健德电动环卫车辆科技有限公司 一种吸扫结合式清扫装置
CN113100666B (zh) * 2021-03-24 2022-04-12 安徽工程大学 一种拖布切换式扫地机器人

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Also Published As

Publication number Publication date
DK0587713T3 (da) 1996-01-22
CN1067695A (zh) 1993-01-06
WO1992021275A1 (fr) 1992-12-10
RU2077862C1 (ru) 1997-04-27
AU667812B2 (en) 1996-04-18
EP0587713A1 (fr) 1994-03-23
HU217274B (hu) 1999-12-28
CA2110811A1 (fr) 1992-12-10
ATE128338T1 (de) 1995-10-15
CA2110811C (fr) 1998-12-01
DE4118708C1 (fr) 1992-08-20
US5495638A (en) 1996-03-05
HU9303461D0 (en) 1994-04-28
DE59203856D1 (de) 1995-11-02
AU1976492A (en) 1993-01-08
HUT70117A (en) 1995-09-28
CN1051126C (zh) 2000-04-05
ES2079193T3 (es) 1996-01-01
JPH06508046A (ja) 1994-09-14

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