EP0207270A2 - Dispositif de commutation fonctionnant sans contact par détecteur de proximité - Google Patents

Dispositif de commutation fonctionnant sans contact par détecteur de proximité Download PDF

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Publication number
EP0207270A2
EP0207270A2 EP86106629A EP86106629A EP0207270A2 EP 0207270 A2 EP0207270 A2 EP 0207270A2 EP 86106629 A EP86106629 A EP 86106629A EP 86106629 A EP86106629 A EP 86106629A EP 0207270 A2 EP0207270 A2 EP 0207270A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
proximity
switch
switching device
permanent magnet
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
EP86106629A
Other languages
German (de)
English (en)
Other versions
EP0207270A3 (en
EP0207270B1 (fr
Inventor
Walter Dipl.-Ing. Brausfeld
Helmut Göttling
Rudolf Ing. grad. Möller
Peter Müller
Gerhard Ing. Grad. Scharnowski
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.)
Aventics GmbH
Original Assignee
Mannesmann Rexroth Pneumatik GmbH
Wabco Westinghouse Steuerungstechnik and Co 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 Mannesmann Rexroth Pneumatik GmbH, Wabco Westinghouse Steuerungstechnik and Co GmbH filed Critical Mannesmann Rexroth Pneumatik GmbH
Priority to AT86106629T priority Critical patent/ATE84910T1/de
Publication of EP0207270A2 publication Critical patent/EP0207270A2/fr
Publication of EP0207270A3 publication Critical patent/EP0207270A3/de
Application granted granted Critical
Publication of EP0207270B1 publication Critical patent/EP0207270B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2892—Means for indicating the position, e.g. end of stroke characterised by the attachment means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/008—Change of magnetic field wherein the magnet and switch are fixed, e.g. by shielding or relative movements of armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/16—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/0207—Adjustable mounting of casings

Definitions

  • the invention relates to a non-contact proximity switch device according to the preamble of claim 1.
  • a proximity switching device which consists of a reed contact element, the switching elements designed as contact tongues can be brought into contact with one another by means of the magnetic field of a permanent magnet which can be moved relative thereto.
  • This known proximity switch device is arranged on the jacket of a working cylinder.
  • a permanent magnet attached to the piston of the working cylinder is used to actuate the reed contact element. If the piston provided with the permanent magnet approaches the reed contact element, the switching elements of the reed contact element reach the area of the magnetic field of the permanent magnet and are brought into contact with one another by the magnetic force.
  • the invention has for its object to provide a non-contact proximity switch device of the type mentioned, which is simple in construction and does not require any significant changes to the device having the component to be sensed.
  • the proximity switch device has the particular advantage that it can be used in all devices in which the reaching of a predetermined position of a movably arranged component is to be recognized or used as a switching criterion, without having to make changes to the components of the devices.
  • This advantage has an effect in particular in the case of commercially available working cylinders which are to be subsequently provided with a device for switching valves which control the pressure medium acting on the working cylinder as a function of the piston position.
  • the piston or the piston rod no longer has to be provided with a permanent magnet, no changes need to be made to the components in the cylinder.
  • the strength of the magnetic field can be quickly and easily adapted to the respective requirements by exchanging the permanent magnet or by arranging a plurality of permanent magnets.
  • the proximity switch device can be attached to each cylinder, regardless of its diameter, according to an advantageous embodiment of the invention specified in the subclaims, without having to use different holding devices. This ensures that the permanent magnet or the permanent magnets of the proximity switch device always the same required for proper functioning Predeterminable position and the same distance to the outer surface of the working cylinder.
  • the holding device as releasable on a part of the cylinder, for. B. a tie rod, attachable lever, at the end of the tie rod facing away from the proximity switch by means of a hinge around the parallel to the longitudinal axis of the cylinder longitudinal axis of the proximity switch rotatably, a simple and secure positional alignment of the proximity switch to the cylinder jacket and thus to the ferromagnetic Partial piston allows.
  • both the part of the lever forming a hinge point with a bearing bolt arranged on the cylinder and the part of the lever forming a hinge point with a pin arranged on the housing of the proximity switch device are of a mouth-shaped design, so that the switch can be easily and quickly mounted on the cylinder is.
  • FIG. 1 shows a cylinder (1) with a cylinder cover (2), the cylinder cover (2) being connected via four tie rods (16) to a cylinder base (not shown here).
  • a tie rod (16) there is a housing (3), open to the cylinder (1), of a non-contact proximity switch device, which contains a magnetic field-dependent switch (11) for sensing the relative approach or distance of a body to or from the switch , fixed by means of a clamping screw (15).
  • the housing (3) is arranged in relation to the cylinder (1) such that it sits on the cylinder (1) with its walls delimiting the housing interior (8).
  • the proximity switch device is provided by the switch (11), which is designed as a reed contact element and is arranged in the housing interior (8) and has two contact tongues serving as switching elements (9) and (12), as well as one that is stationary with respect to the switch (11) in the housing interior (8 ) arranged permanent magnets (14) formed.
  • the permanent magnet (14) is used to generate a magnetic field that actuates the switch (11).
  • One switching element (9) is connected to the cylinder (1) via a connecting wire (5), preferably in such a way that the connecting wire (5) is clamped between the cylinder (1) and a wall of the housing (3). From the connecting wire (5) branches off another connecting wire (4), which leads to a connection (6) designed as a knife contact for z. B. leads a connector.
  • the other switching element (12) is connected via a connecting wire (13) to a pole, in this exemplary embodiment to the pole "N" of the permanent magnet (14). From the same pole of the permanent magnet (14) leads a connecting wire (17) to a further connection (10) designed as a knife contact.
  • the two connections (6) and (10) are arranged on the housing (3) and connected with a plug (7).
  • Fig. 2 shows a working cylinder with two proximity switching devices.
  • the components that are the same as the components shown in FIG. 1 are provided with the same reference numerals.
  • a piston is arranged in a sealed, displaceable manner.
  • the piston consists of a double-pot sleeve (22) and a disc-shaped body (23) serving as a carrier for the double-pot sleeve (22) made of a ferromagnetic material, e.g. B. a soft iron disc.
  • the piston (22, 23) is connected to a piston rod (24) by means of a screw (21).
  • Each of the two proximity switch devices (3, 11) and (17, 19) is provided with a connection (7) and (18).
  • the connections (7, 18) are connected to magnetic valve devices (not shown here) for controlling the pressurization of the pressure medium for the pressure medium chambers (25) and (26) of the working cylinder (1).
  • the switches (11, 17) are connected in a circuit which connects a voltage source to the solenoid valve devices.
  • the function of the proximity switch device is explained in more detail below with reference to FIGS. 1 and 2.
  • the magnetic valve device switches over in such a way that the pressure medium supply to the pressure medium chamber (25) is interrupted, the pressure medium chamber is vented and the pressure rod chamber (26) on the piston rod side is aerated.
  • the piston (22, 23) is moved to the right by the pressure building up in the pressure medium chamber (26) on the piston rod side.
  • the magnetic flux in the switch (11) becomes weaker again and the switching elements (9, 12) move away from each other.
  • the circuit in which the switch (11) and the solenoid valve device are located is now interrupted.
  • the solenoid valve device switches over again in such a way that the pressure medium supply to the piston rod-side pressure medium chamber (26) is interrupted, the piston rod-side pressure medium chamber (26) is vented and the pressure medium chamber (26) opposite the piston rod-side pressure medium chamber (26) is vented.
  • FIG. 3 shows a proximity switch device which is fastened to a tie rod of a working cylinder by means of a lever serving as a holding device.
  • a proximity switch device which is fastened to a tie rod of a working cylinder by means of a lever serving as a holding device.
  • a proximity switch device which is enclosed by a housing, which is composed of the upper housing part (7) and lower housing part (3), is arranged on a cylinder (1).
  • the lower housing part (3) On its side facing the cylinder (1), the lower housing part (3) has two nose-like projections (29, 28) which are arranged parallel to one another and with which the housing (3, 7) rests on the cylinder (1).
  • the lower housing part (3) has a pivot pin (30), which extends parallel to the longitudinal axis of the cylinder (1) and extends outwards on two opposite sides.
  • a lever serving as a holding device for the proximity switch device has at its end facing the housing (3, 7) a bearing eye (32) which serves to receive the free end region of the bearing journal (30).
  • the bearing journal (30) and the bearing eye (32) serve as a joint, which makes it possible to rotate the proximity switching device about its longitudinal axis running parallel to the longitudinal axis of the cylinder (1).
  • the end region (34) of the lever (33, 34) facing away from the housing (3, 7) of the proximity switch device has a recess (35) formed in this embodiment, which partially encloses a bearing pin formed by a tie rod (16) of the working cylinder.
  • the tie rod (16) and three further tie rods, not shown here, serve as a connection between a cylinder cover (31) and a cylinder bottom, not shown here, which limit the cylinder (1) on its end faces.
  • a screw (36) serving as a clamping device is screwed in, which comes into contact with the tie rod (16) and thus the tie rod (16) and the Lever (34,33) braced against each other.
  • the proximity switch device is installed in such a way that first the lever (34, 33) with its end (33) provided with the bearing eye (32) is placed on the pivot pin (30) of the lower housing part (3) of the proximity switch device and then with the proximity switch device hinged lever (34, 33) with its mouth-like recess (35) is suspended in the tie rod (16).
  • the housing (7, 3) of the proximity switch device is then aligned with the cylinder (1) so that it rests on the cylinder (1) with its nose-like projections (28, 29).
  • the lever (34) connected to the proximity switch device is , 33) and the tie rod (16) are connected to one another in a rotationally fixed manner. If a different position is desired for the proximity switch, the screw (36) is loosened and the lever (34, 33) connected to the proximity switch on the tie rod (16) is moved in the direction of the longitudinal axis of the cylinder (1).
  • the lever (34, 33) serving as a holding device for the proximity switch device is articulated by means of a first joint (30, 32) with the proximity switch device and by means of a second joint, which in this exemplary embodiment is connected by the tie rod (16) and the mouth-like recess (35 ) of the part (34) of the lever (33, 34) is formed, articulated with the cylinder (1) or with a part arranged on the cylinder, such as. B. the tie rod (16), articulated, the proximity switch can be attached to each working cylinder without changes to the proximity switch or to the holding device. Regardless of the diameter of the respective cylinder, the proximity switch takes device always the same position required for their function to the cylinder and to the piston provided with the ferromagnetic part.
  • the part (33) of the lever (33, 34) which is articulated to the housing (3, 7) of the proximity switch device can also have a mouth-like recess instead of the bearing eye (32) in order to simplify assembly.
  • FIG. 4 shows a top view of the holding device for the proximity switching device shown in FIG. 3.
  • 4 consists of a lever (38, 39) provided with a slot (42) running transversely to the longitudinal axis of a tie rod (16).
  • the two parallel arms (38, 39) of the lever (38, 39) formed by the slot (42) are narrower in the area of the proximity switch device than in the area of the part of the lever (38, 39) surrounding the tie rod (16) and thus form a fork-like part, on the free end region of which recesses are provided for receiving bearing journals arranged on the housing (7, 3) of the proximity switch device.
  • the joint formed in this way between the housing (7, 3) of the proximity switch device and the holding device (38, 39) enables the proximity switch device to be rotated relative to the holding device (38, 39) about an axis of the housing (7, 3) running parallel to the longitudinal axis of the cylinder ).
  • the end area (40) of the two-armed lever (38, 39) facing away from the housing (7, 3) of the proximity switch device like the lever shown in FIG. 3, has a mouth-like recess which partially surrounds the tie rod (16).
  • two screws (41, 36) are screwed into the part of the lever (40) which has the mouth-like recess.
  • the use of the proximity switch device described above is of course not limited to the exemplary embodiment.
  • the proximity switch can be used wherever the position of one of two relatively movable parts is detected and z. B. to be used as a switching criterion.
  • the part of the body consisting of the ferromagnetic material in the exemplary embodiment part '23' of the piston "22, 23 ') is designed and guided in such a way that it is that of the permanent magnet magnetic field exerted and acting on the switch can increase if the body is in the vicinity of the switch, which means that the pole of the permanent magnet not connected to a switching element must face the body to be guided past the permanent magnet and not always with the another pole of the permanent magnet connected switching element, a conductor made of a ferromagnetic material should be provided, which also faces the body Magnetic flux and thus also the strengthening of the magnetic field takes place in the switch (11) according to the exemplary embodiment predominantly in the area of the switching element (9) which is not constantly connected
  • the switch is biased at its connections with the corresponding magnetic field strength by the magnetic field generated by the two permanent magnets arranged opposite to each other.
  • Two nose-like projections which are connected in a magnetically conductive manner to the permanent magnets, can be provided on the housing and come to rest on the outer surface of the cylinder when the proximity switch device is mounted on a cylinder.
  • a proximity switch device of the type described above operates as follows. Since on both sides of the switch the field strength of the magnetic field generated by the two permanent magnets has the opposite polarity but the same amount, the switch is not excited to switch.
  • Switching of the contacts can only be achieved if the switch is either moved closer to one or the other of the two permanent magnets, or if the magnetic field of one of the two permanent magnets is disturbed and the other permanent magnet gains influence. Will the one with the Piston provided ferromagnetic part moved in the working cylinder and thereby comes close to one of the permanent magnets, so the field lines take the path of smaller resistance (via the ferromagnetic part provided on the piston) and shift out of their earlier course. The magnetic field disturbance thus caused causes the contacts of the switch to switch. The shifting of the field lines causes an intensification of the magnetic field in the area of the contacts of the switch.
  • field plates can also be arranged in the proximity switch described.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Push-Button Switches (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Massaging Devices (AREA)
  • Switches With Compound Operations (AREA)
EP86106629A 1985-06-29 1986-05-15 Dispositif de commutation fonctionnant sans contact par détecteur de proximité Expired - Lifetime EP0207270B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86106629T ATE84910T1 (de) 1985-06-29 1986-05-15 Beruehrungslos arbeitende naeherungsschalteinrichtung.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3523371 1985-06-29
DE3523371 1985-06-29
DE19863609537 DE3609537A1 (de) 1985-06-29 1986-03-21 Beruehrungslos arbeitende naeherungsschalteinrichtung
DE3609537 1986-03-21

Publications (3)

Publication Number Publication Date
EP0207270A2 true EP0207270A2 (fr) 1987-01-07
EP0207270A3 EP0207270A3 (en) 1988-09-14
EP0207270B1 EP0207270B1 (fr) 1993-01-20

Family

ID=25833593

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86106629A Expired - Lifetime EP0207270B1 (fr) 1985-06-29 1986-05-15 Dispositif de commutation fonctionnant sans contact par détecteur de proximité

Country Status (5)

Country Link
US (1) US4680436A (fr)
EP (1) EP0207270B1 (fr)
AT (1) ATE84910T1 (fr)
BR (1) BR8603000A (fr)
DE (2) DE3609537A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2664946A1 (fr) * 1990-07-03 1992-01-24 Festo Kg Verin moteur.
EP0824196A1 (fr) * 1996-08-13 1998-02-18 Honeywell Lucifer Sa Tête de commande électro-pneumatique pour actuateurs
CN109530652A (zh) * 2018-11-08 2019-03-29 贵州华昌汽车电器有限公司 一种压铸模具用的接插式不锈钢感应油缸
DE102018105255B4 (de) 2018-03-07 2023-01-26 Sick Ag Vorrichtung zur Befestigung eines Sensors an einem Hygienezylinder

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4752657A (en) * 1987-05-07 1988-06-21 Allied Automation Systems, Inc. Proximity switch mounting apparatus
EP0297150B1 (fr) * 1987-06-27 1990-08-29 Pulsotronic Merten GmbH & Co. KG Détecteur de position pour la part mobile d'un servomoteur actionné par fluide
FR2620530B1 (fr) * 1987-09-16 1991-04-12 Celduc Dispositif de capteur a effet electrique
DE3734525A1 (de) * 1987-10-13 1989-04-27 Festo Kg Insbesondere in abhaengigkeit von bestimmten kolbenstellungen eines kolben-zylinder-aggregates betaetigbare schaltanordnung
US4800241A (en) * 1987-11-16 1989-01-24 Allied Automation Systems, Inc. Proximity switch mounting plate
US5219068A (en) * 1991-07-16 1993-06-15 Cincinnati Milacron, Inc. Adjustable proximity switch mounting assembly
US5285652A (en) * 1993-04-08 1994-02-15 General Electric Company Sensor for pressure controlled switching valve for refrigeration system
US5704813A (en) * 1995-12-13 1998-01-06 Namco Controls Corporation Proximity sensor housing and arrangement
US8375801B2 (en) * 2010-12-20 2013-02-19 Sondex Limited Sensitive differential pressure sensor and method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1590157B2 (de) * 1966-09-29 1973-03-29 Robert Bosch Gmbh, 7000 Stuttgart Magnetisch gesteuerte schaltvorrichtung
DE7430805U (de) * 1974-09-13 1976-03-25 Robert Bosch Gmbh, 7000 Stuttgart Ansatzkörper, insbesondere Magnetfeldschalter
US4086456A (en) * 1976-10-04 1978-04-25 Cincinnati Milacron Inc. Mounting for magnetic switch
DE2819818A1 (de) * 1977-12-05 1979-06-07 Scovill Manufacturing Co Magnetabtastvorrichtung
DE2917232A1 (de) * 1978-05-03 1979-11-08 Hydro Pneumatic Ab Druckmittelbetaetigter arbeitszylinder
DE3516346C1 (de) * 1985-05-07 1986-04-30 Daimler-Benz Ag, 7000 Stuttgart Klemmvorrichtung zur Befestigung eines Lagegebers an den Zuganker eines Druckmittelzylinders

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1290223B (de) * 1965-02-19 1969-03-06 Siemens Ag Schaltgeraet mit magnetisch zu betaetigenden Schaltern, insbesondere fuer Aufzugsanlagen
CH460127A (de) * 1967-04-21 1968-07-31 Zellweger Uster Ag Verfahren und Näherungsschalter zum Schalten von Stromkreisen durch ferromagnetische Körper
DE7907415U1 (de) * 1979-03-16 1979-06-13 Martonair Druckluftsteuerungen Gmbh, 4234 Alpen Pneumatischer Zylinder mit einem am Zylinderkolben angebrachten Dauermagneten zur berührungslosen Schaltung eines Magnetschalters
DD209541A1 (de) * 1982-09-16 1984-05-09 Guenter Andres Taste mit schutzrohrkontakten
JPS60178952A (ja) * 1984-02-27 1985-09-12 Mitsubishi Electric Corp 内燃機関の燃料噴射制御装置
DE3411367A1 (de) * 1984-03-28 1985-10-10 Robert Bosch Gmbh, 7000 Stuttgart Druckmittelspeicher

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1590157B2 (de) * 1966-09-29 1973-03-29 Robert Bosch Gmbh, 7000 Stuttgart Magnetisch gesteuerte schaltvorrichtung
DE7430805U (de) * 1974-09-13 1976-03-25 Robert Bosch Gmbh, 7000 Stuttgart Ansatzkörper, insbesondere Magnetfeldschalter
US4086456A (en) * 1976-10-04 1978-04-25 Cincinnati Milacron Inc. Mounting for magnetic switch
DE2819818A1 (de) * 1977-12-05 1979-06-07 Scovill Manufacturing Co Magnetabtastvorrichtung
DE2917232A1 (de) * 1978-05-03 1979-11-08 Hydro Pneumatic Ab Druckmittelbetaetigter arbeitszylinder
DE3516346C1 (de) * 1985-05-07 1986-04-30 Daimler-Benz Ag, 7000 Stuttgart Klemmvorrichtung zur Befestigung eines Lagegebers an den Zuganker eines Druckmittelzylinders

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2664946A1 (fr) * 1990-07-03 1992-01-24 Festo Kg Verin moteur.
EP0824196A1 (fr) * 1996-08-13 1998-02-18 Honeywell Lucifer Sa Tête de commande électro-pneumatique pour actuateurs
CH691003A5 (fr) * 1996-08-13 2001-03-30 Parker Lucifer Sa Tête de commande électro-pneumatique pour actuateurs.
DE102018105255B4 (de) 2018-03-07 2023-01-26 Sick Ag Vorrichtung zur Befestigung eines Sensors an einem Hygienezylinder
CN109530652A (zh) * 2018-11-08 2019-03-29 贵州华昌汽车电器有限公司 一种压铸模具用的接插式不锈钢感应油缸

Also Published As

Publication number Publication date
DE3687547D1 (de) 1993-03-04
US4680436A (en) 1987-07-14
DE3609537A1 (de) 1987-01-08
EP0207270A3 (en) 1988-09-14
BR8603000A (pt) 1987-02-17
EP0207270B1 (fr) 1993-01-20
ATE84910T1 (de) 1993-02-15

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