EP0276665A2 - Distributeur par compression pour cartouches doubles - Google Patents

Distributeur par compression pour cartouches doubles Download PDF

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Publication number
EP0276665A2
EP0276665A2 EP88100224A EP88100224A EP0276665A2 EP 0276665 A2 EP0276665 A2 EP 0276665A2 EP 88100224 A EP88100224 A EP 88100224A EP 88100224 A EP88100224 A EP 88100224A EP 0276665 A2 EP0276665 A2 EP 0276665A2
Authority
EP
European Patent Office
Prior art keywords
piston
cylinder
discharge device
longitudinal
cartridge
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
EP88100224A
Other languages
German (de)
English (en)
Other versions
EP0276665A3 (en
EP0276665B1 (fr
Inventor
Wilhelm A. Keller
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.)
Mixpac Systems AG
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 EP0276665A2 publication Critical patent/EP0276665A2/fr
Publication of EP0276665A3 publication Critical patent/EP0276665A3/de
Application granted granted Critical
Publication of EP0276665B1 publication Critical patent/EP0276665B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/015—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with pneumatically or hydraulically actuated piston or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00553—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with means allowing the stock of material to consist of at least two different components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/01—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like
    • B05C17/014—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like comprising means for preventing oozing

Definitions

  • the invention relates to a discharge device for operating double cartridges provided with delivery pistons, with a pressure medium-operated cylinder / piston unit, in the region of the cylinder base arranged holding means for exchangeable reception of the cartridges, and from the piston outgoing, through the cylinder bottom mentioned rams for the propulsion of the delivery pistons.
  • the double cartridges intended for operation by the discharge device are used in a known manner for processing so-called two-component masses, the two components of which are stored in separate, cylindrical containers and are discharged through the cartridge mouth when acting on the delivery pistons.
  • the components are usually brought together in a flow mixer adjoining the cartridge mouth and mixed intimately.
  • the object of the invention is to design a discharge device of the type mentioned so that even very different reaction forces on the part of the two plungers during the piston advance do not have a disadvantageous effect on the function and handling of the device.
  • the cylinder space contains a rigid longitudinal guide connecting both cylinder bottoms and penetrating the piston, on which the piston is slidably supported by means of a guide bore extending in the longitudinal direction.
  • the cylinder / piston unit is denoted overall by 1.
  • the device is “pistol-shaped” with a handle 30 which, for example, is molded onto a cylinder base 2 or is in any case firmly connected to it.
  • the double cartridge has two cylindrical ones Reservoir 41 on, each with a delivery piston 42.
  • the cartridge contents - the two components of a two-component system - are discharged from the cartridge; This discharge is usually carried out step by step in several "batches” with waiting times in between.
  • the discharge device has two plungers 7 which start from the device piston and pass through the cylinder base 2. 1 shows the situation when the cartridge is still approximately full, that is to say after the plungers have only covered a small part of the entire stroke.
  • the pneumatic cylinder of the cylinder / piston unit 1 is composed of the already mentioned cylinder base 2, the opposite cylinder base 4 and the cylinder wall 3.
  • the piston which is displaceable in the cylinder essentially consists of the piston plate 5 and a hub 6 which is firmly connected to it and in which the two plungers 7 are inserted.
  • What is essential in the present discharge device is a rigid longitudinal guide 10 present in the cylinder space, which preferably connects the two cylinder bases 2 and 4 coaxially to the cylinder axis and penetrates the piston 5, 6.
  • the piston is slidably supported on this longitudinal guide, which is designed here as a round rod, by means of a guide bore 9 which extends in the longitudinal direction (in the present case divided into two sections).
  • the longitudinal guide 10 is screwed to the cylinder base 2 on the one hand.
  • the other end of the longitudinal guide protrudes through a through hole 13 in the cylinder base 4, which is held by means of a cap nut 11 tightened on the longitudinal guide 10 and rests axially on the cylinder wall 3 with an annular surface 12 on the circumference.
  • the other end of the cylinder wall 3 is received by a recess 18 in the cylinder base 2; of course it could be axially supported analogously to the cylinder base 4 or also firmly with the cylinder base be connected to the 2.
  • the two plungers 7 - and thus the two cartridge containers 41 - do not necessarily have to lie vertically one above the other (as shown in the drawing plane in FIG. 1) with their longitudinal axes, but also depending on the position of the double cartridges in the Discharge device, for example, can be arranged horizontally next to one another.
  • the longitudinal guide 10 in the central axis of the cylinder wall 3 and the two plungers are arranged symmetrically on both sides thereof, deviating, that is, asymmetrical arrangements are also possible, especially if unequal reaction forces are to be expected from the plungers from the outset , especially if the cross sections of the two cartridge containers are unequal.
  • double cartridges are understood to mean both cartridges made in one piece with two containers and those with containers of two-component systems which are manufactured separately or are to be inserted into the device.
  • the longitudinal guide can perform 10 other tasks in connection with the discharge device: it has a longitudinal channel 20 in order to guide the pressure medium into the cylinder space 15 on the side of the piston facing away from the plungers 7.
  • the compressed gas for the piston feed is fed through a line 33 in the handle 30 of the device and metered by a control valve 34 to be operated by means of a hand lever 35. From the valve 34, the compressed gas passes through a line 26 arranged in the cylinder base 2 into the longitudinal bore 20 and in this behind the pistons 5, 6, where one or more radial bores 21 establish the connection to the cylinder space 15.
  • a quick exhaust valve controlled by the pressure medium for example a shuttle valve, consisting of the piston 23 and the valve spring 24.
  • the control valve 34 When the control valve 34 is actuated, the compressed gas in the longitudinal channel 20 displaces the valve piston 23 against the spring 24 so far to the right (in FIG. 1) that it can enter the cylinder space 15 via the bore 21 and advance the device piston 5, 6.
  • a so-called 2/3-way valve which at the same time ensures the venting of the line 26 and the bore 20 - the valve piston 23 is returned by the spring 24 to the rest position shown, whereby it is a previously blocked Vent opening 22 for the cylinder space 15 releases.
  • the piston plate 5 is relieved of pressure each time the control valve 34 is not actuated (bore 20 depressurized).
  • a changeover valve with a multiple control piston 31 and valve spring 32 is also provided, which is connected between the outlet of the control valve 34 and the cylinder chamber 14, which is located on the tappet side of the device piston 5, 6.
  • the control piston 31 can, if necessary, be operated simultaneously with the hand lever 35, for example with the thumb of the hand holding the carrying handle 30. In the illustrated rest position of the changeover valve, the piston 31 releases the pressure medium line 26 on the one hand and a ventilation line 28 on the other hand, via which the air can escape from the cylinder space 14 during the advance of the device piston 5, 6.
  • the switching valve 31, 32 serves to return the device pistons 5, 6 with the plungers 7 to the starting position (on the right in FIG. 1) in order to prepare for a replacement of the cartridges 40.
  • the tappets 7 are lifted from the delivery piston 42 by a small amount each time the pressure in the cylinder space 15 is released: for this purpose there are in a recess 37 housed inside the piston hub 6, an annular return member 38 and one or more return springs 39.
  • the return element 38 can be moved in a frictionally locking manner along the longitudinal guide 10.
  • the return springs 39 are supported between the return member 38 and the piston plate 5, and between the return member and the A limited axial relative movement is possible for the piston.
  • the compression springs 39 are tensioned first, and then when the piston has moved somewhat axially relative to the return element and the spring force overcomes the friction of the return element on the longitudinal guide 10, the return element becomes inside the hub 6 taken away.
  • the return element 38 remains on the longitudinal guide 10, while the springs 39 relax and move the piston back against the feed direction by the previously traveled spring travel; it is assumed that the frictional force of the return member on the longitudinal guide 10 is greater than the overall frictional forces acting on the pistons 5, 6.
  • the return arrangement 38, 39 being arranged axially between longitudinal sections of the guide bore 9, the axial length of the device piston 5, 6 is expediently utilized.
  • FIG. 2 A variant of the return arrangement described is shown in FIG. 2, parts which correspond to one another being identified by the same reference numbers.
  • the cylinder inner surface 17 is used instead of the longitudinal guide 10 as a friction surface for the likewise annular, but correspondingly larger return member 38 ⁇ .
  • Return springs 39 ⁇ are in turn clamped between the return member 38 ⁇ and the piston 5 ⁇ , a stop 36 ensuring the precise limitation of the possible axial movement between the parts 38 ⁇ and 5 ⁇ .
  • the piston plate 5 ⁇ and the hub 6 ⁇ can be in one piece and the guide bore 9 can be load-bearing over its entire length. 2 is the same as in the arrangement according to FIG. 1.
  • the present device is therefore provided with an expedient display element, which is shown, for example, in FIG. 1 and which can easily recognize the cartridge fill level at any time during the discharge.
  • the display element has a push rod 61, which is here directly connected to the piston plate 5 and which penetrates the cylinder bottoms 2 on the cartridge side and carries a pointer 60 outside the same. This slides in a guideway 62 which adjoins the cylinder base 2 and can be provided, for example, with a fill level scale.
  • the guideway 62 is provided here in a strut 47 of the dispenser connected to the cylinder base 2, however, if the strut is omitted, the guideway and / or scale can also be provided directly on the cartridges 40.
  • the display element with the return element instead of with to connect the device piston directly.
  • FIG. 2 An embodiment which is analogous in terms of mode of operation in the case of a return element 38 sliding along the longitudinal guide 10 according to FIG. 1 can be seen from FIG. There, the push rod 61 ⁇ is angled within the cylinder and connected to the return element 38, a radial bore 59 in the hub 6 ensuring sufficient freedom of movement in the axial direction.
  • the relative movement between the piston unit 5, 6 and the return element 38 can be limited exactly according to FIG. 3 by stops 36 ⁇ .
  • a display element that can be moved through one of the cylinder bottoms depending on the movement of the device piston - as described above - could also be used for dispensing devices with only one plunger (for single carto be used with advantage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Actuator (AREA)
  • Accessories For Mixers (AREA)
EP88100224A 1987-01-26 1988-01-11 Distributeur par compression pour cartouches doubles Expired - Lifetime EP0276665B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH252/87 1987-01-26
CH25287 1987-01-26

Publications (3)

Publication Number Publication Date
EP0276665A2 true EP0276665A2 (fr) 1988-08-03
EP0276665A3 EP0276665A3 (en) 1989-08-30
EP0276665B1 EP0276665B1 (fr) 1991-03-06

Family

ID=4182770

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100224A Expired - Lifetime EP0276665B1 (fr) 1987-01-26 1988-01-11 Distributeur par compression pour cartouches doubles

Country Status (6)

Country Link
US (2) US4911328A (fr)
EP (1) EP0276665B1 (fr)
JP (1) JPH0730762B2 (fr)
CA (1) CA1338148C (fr)
DE (1) DE3861858D1 (fr)
ES (1) ES2020583B3 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0408494A1 (fr) * 1989-07-13 1991-01-16 Wilhelm A. Keller Dispositif pour éjection manuelle pour une cartouche double par mélange à deux composants
EP0406113A3 (en) * 1989-06-30 1991-06-26 Illinois Tool Works Inc. Dosage control for adhesive dispenser
EP0443611A3 (en) * 1990-02-23 1991-12-18 Physical Systems Inc. Dual component dispenser gun
WO1992004130A1 (fr) * 1990-08-31 1992-03-19 Elefant-Chemie, Breuhan Gmbh & Co. Kg I.G. Machine a coller industrielle et pour laboratoires
US5137181A (en) * 1990-07-18 1992-08-11 Wilhelm A. Keller Manually operated appliance, in particular for a double dispensing cartridge for two-component substances
WO1997026983A1 (fr) * 1996-01-25 1997-07-31 Stainless Steel Coatings Inc. Dispositif distributeur pour fluides multiconstituants
WO2007039378A1 (fr) * 2005-10-05 2007-04-12 Kraussmaffei Technologies Gmbh Dispositif de dosage d'additifs conçu pour une installation de polyurethanne
DE102011081137A1 (de) * 2011-08-17 2013-02-21 Henkel Ag & Co. Kgaa Ausgabesystem
US8499977B2 (en) 2009-10-22 2013-08-06 P. C. Cox Limited Plunger
US8528793B2 (en) 2010-12-23 2013-09-10 P. C. Cox Limited Actuator
US8607824B2 (en) 2010-12-23 2013-12-17 P.C. Cox Limited Valve and dispenser using the valve
US8616415B2 (en) 2010-12-23 2013-12-31 P.C. Cox Limited Dispenser
RU2523995C2 (ru) * 2006-12-15 2014-07-27 3М Инновейтив Пропертиз Компани Смешивание и подача через диспенсер многокомпонетных отверждаемых материалов
US8870093B2 (en) 2010-12-23 2014-10-28 P.C. Cox Limited Dispenser

Families Citing this family (25)

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US5058769A (en) * 1990-03-05 1991-10-22 Liquid Control Corporation Self-contained pneumatic gun for dispensing flowable materials
EP0463990B1 (fr) * 1990-06-22 1994-07-20 Wilhelm A. Keller Appareil de distribution entraîné électriquement
US5203839A (en) * 1991-06-14 1993-04-20 Skaggs Kenneth R Apparatus for dispensing adhesive materials
ES2130383T3 (es) * 1993-01-15 1999-07-01 Wilhelm A Keller Aparato dosificador para, por lo menos, dos componentes.
US5390825A (en) * 1993-03-10 1995-02-21 Rockel; Christopher M. Portable, self contained, two-part adhesive dispensing device
DE59407465D1 (de) * 1993-03-17 1999-01-28 Wilhelm A Keller Handbetätigtes Austraggerät für eine Doppelaustragkartusche
US5411180A (en) * 1993-05-07 1995-05-02 Innovative Technology Sales, Inc. Self-contained hydraulic dispensing mechanism with pressure relief regulator
US5400925A (en) * 1993-12-09 1995-03-28 Coltene/Whaledent, Inc. Dispensing device adapted for dispensing more than one material from a cartridge
US5492249A (en) * 1994-02-28 1996-02-20 Grand Soft Equipment Company Apparatus to vent high-pressure air to atmosphere in a frozen confection-dispensing apparatus
US5535922A (en) * 1994-11-29 1996-07-16 Tah Industries, Inc. Caulking gun dispensing module for multi-component cartridge
ATE225209T1 (de) * 1996-01-19 2002-10-15 Johnson Diversey Inc Variable doppelkolbendosieranlage
JP4137281B2 (ja) * 1999-04-28 2008-08-20 株式会社ジーシー 歯科用粘性材料用ディスペンサー
US6135328A (en) * 1999-05-19 2000-10-24 Schneider; Mark C. Pressure relief mechanism for a dispensing device
DE10343575B4 (de) * 2003-09-18 2006-06-29 Hilti Ag Auspressgerät mit Dosiervorrichtung
KR20070101865A (ko) * 2004-12-22 2007-10-17 알콘, 인코퍼레이티드 안과용 약물 전달 장치
TWI451862B (zh) * 2007-10-09 2014-09-11 Alcon Res Ltd 用於眼睛注射的熱係數驅動藥丸尺寸
TWI498136B (zh) * 2007-10-09 2015-09-01 Alcon Res Ltd 用於遞送速率及溫度相依性物質至眼睛的注射器及其製備方法
DE102008037686B4 (de) * 2008-08-14 2012-07-05 Kettenbach Gmbh & Co. Kg Behälter und Kolbenstangenanordnung sowie deren Verwendung
US8632511B2 (en) * 2009-05-06 2014-01-21 Alcon Research, Ltd. Multiple thermal sensors in a multiple processor environment for temperature control in a drug delivery device
US8177747B2 (en) * 2009-12-22 2012-05-15 Alcon Research, Ltd. Method and apparatus for drug delivery
USD660663S1 (en) 2010-12-23 2012-05-29 P.C. Cox Limited Dual trigger dispenser for cartridge
USD660105S1 (en) 2010-12-23 2012-05-22 Richard Brummitt Dispenser for cartridge
USD673020S1 (en) 2010-12-23 2012-12-25 P.C. Cox Limited Single Trigger dispensers for cartridges
EP3251755A1 (fr) 2016-05-31 2017-12-06 Sulzer Mixpac AG Distributeur à deux composants
TW202142279A (zh) * 2020-03-27 2021-11-16 日商帝人製藥股份有限公司 氧濃縮裝置

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JPS5953835U (ja) * 1982-09-29 1984-04-09 長沼　周一郎 二液が瞬時に混合する注入器
DE3514428A1 (de) * 1985-04-20 1986-10-23 Hilti Ag, Schaan Geraet zum auspressen von kartuschen
US4690306A (en) * 1985-08-12 1987-09-01 Ciba-Geigy Corporation Dispensing device for storing and applying at least one liquid or pasty substance
US4898302A (en) * 1987-01-12 1990-02-06 Nordson Corporation Apparatus for melting and dispensing thermoplastic material

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0406113A3 (en) * 1989-06-30 1991-06-26 Illinois Tool Works Inc. Dosage control for adhesive dispenser
EP0408494A1 (fr) * 1989-07-13 1991-01-16 Wilhelm A. Keller Dispositif pour éjection manuelle pour une cartouche double par mélange à deux composants
EP0443611A3 (en) * 1990-02-23 1991-12-18 Physical Systems Inc. Dual component dispenser gun
US5137181A (en) * 1990-07-18 1992-08-11 Wilhelm A. Keller Manually operated appliance, in particular for a double dispensing cartridge for two-component substances
WO1992004130A1 (fr) * 1990-08-31 1992-03-19 Elefant-Chemie, Breuhan Gmbh & Co. Kg I.G. Machine a coller industrielle et pour laboratoires
WO1997026983A1 (fr) * 1996-01-25 1997-07-31 Stainless Steel Coatings Inc. Dispositif distributeur pour fluides multiconstituants
WO2007039378A1 (fr) * 2005-10-05 2007-04-12 Kraussmaffei Technologies Gmbh Dispositif de dosage d'additifs conçu pour une installation de polyurethanne
CN100594363C (zh) * 2005-10-05 2010-03-17 克劳斯玛菲科技有限公司 用于聚氨酯设备的添加物定量装置
US11964248B2 (en) 2006-12-15 2024-04-23 3M Innovative Properties Company Mixing and dispensing curable multi-component materials
US9731258B2 (en) 2006-12-15 2017-08-15 3M Innovative Properties Company Mixing and dispensing curable multi-component materials
US11084008B2 (en) 2006-12-15 2021-08-10 3M Innovative Properties Company Mixing and dispensing curable multi-component materials
US10086345B2 (en) 2006-12-15 2018-10-02 3M Innovative Properties Company Mixing and dispensing curable multi-component materials
RU2523995C2 (ru) * 2006-12-15 2014-07-27 3М Инновейтив Пропертиз Компани Смешивание и подача через диспенсер многокомпонетных отверждаемых материалов
US8499977B2 (en) 2009-10-22 2013-08-06 P. C. Cox Limited Plunger
US8528793B2 (en) 2010-12-23 2013-09-10 P. C. Cox Limited Actuator
US8870093B2 (en) 2010-12-23 2014-10-28 P.C. Cox Limited Dispenser
US8616415B2 (en) 2010-12-23 2013-12-31 P.C. Cox Limited Dispenser
US8607824B2 (en) 2010-12-23 2013-12-17 P.C. Cox Limited Valve and dispenser using the valve
DE102011081137B4 (de) * 2011-08-17 2015-03-12 Henkel Ag & Co. Kgaa Ausgabesystem
DE102011081137A1 (de) * 2011-08-17 2013-02-21 Henkel Ag & Co. Kgaa Ausgabesystem

Also Published As

Publication number Publication date
US5123568A (en) 1992-06-23
ES2020583B3 (es) 1991-08-16
EP0276665A3 (en) 1989-08-30
CA1338148C (fr) 1996-03-12
JPH0730762B2 (ja) 1995-04-10
US4911328A (en) 1990-03-27
DE3861858D1 (de) 1991-04-11
JPS63186014A (ja) 1988-08-01
EP0276665B1 (fr) 1991-03-06

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