EP0090064B1 - Trancheuse ayant un dispositif d'affûtage pour le couteau circulaire - Google Patents

Trancheuse ayant un dispositif d'affûtage pour le couteau circulaire Download PDF

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Publication number
EP0090064B1
EP0090064B1 EP82102659A EP82102659A EP0090064B1 EP 0090064 B1 EP0090064 B1 EP 0090064B1 EP 82102659 A EP82102659 A EP 82102659A EP 82102659 A EP82102659 A EP 82102659A EP 0090064 B1 EP0090064 B1 EP 0090064B1
Authority
EP
European Patent Office
Prior art keywords
hood
grinding
protective
slicing machine
circular blade
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
Application number
EP82102659A
Other languages
German (de)
English (en)
Other versions
EP0090064A1 (fr
Inventor
Robert T. Escher
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.)
Maatschappij Van Berkels Patent BV
Original Assignee
Maatschappij Van Berkels Patent BV
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 Maatschappij Van Berkels Patent BV filed Critical Maatschappij Van Berkels Patent BV
Priority to DE8282102659T priority Critical patent/DE3271328D1/de
Priority to EP82102659A priority patent/EP0090064B1/fr
Priority to AT82102659T priority patent/ATE19987T1/de
Publication of EP0090064A1 publication Critical patent/EP0090064A1/fr
Application granted granted Critical
Publication of EP0090064B1 publication Critical patent/EP0090064B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/22—Safety devices specially adapted for cutting machines
    • B26D7/225—Safety devices specially adapted for cutting machines for food slicers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/12—Means for treating work or cutting member to facilitate cutting by sharpening the cutting member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/22—Safety devices specially adapted for cutting machines

Definitions

  • the invention relates to a slicer of the type specified in the preamble of claim 1.
  • the protective hood is pivotally connected to the frame of the machine via a pivot axis running approximately parallel to the plane of the circular knife. If pressure is exerted laterally on the protective hood, the grinding tool moves from a rest position, in which it is arranged at a free distance from the circular knife, into a grinding position, in which the grinding tool is effective on the rotating knife.
  • the protective hood is held in the neutral rest position by stops and spring members when no pressure is exerted.
  • the invention has for its object to develop a simple slicer of the type mentioned in the preamble of claim 1, which is easy to clean and excludes injuries from the circular knife. This is achieved according to the invention by the measures specified in the characterizing part of claim 1, which have the following special meaning:
  • connection between the wall part and the hood can be made by a one-way connection.
  • the coupling position between the wall part and the protective hood is then already secured by the connection itself.
  • This version will be used in particular when this wall part is intended to close an opening in the upper area of the hood as a cover.
  • the coupling between the wall part carrying the grinding wheel and the hood can alternatively take place via a push connection. This is particularly preferable if the removable wall part is formed by an entire side wall of the hood.
  • the wall part is then slidably received in sliding fashion in guides on the ceiling of the protective hood.
  • the direction of this pushing movement for mounting the wall part in the hood is expediently chosen in accordance with the direction of the swiveling movement of the hood in order to transfer it between its rest and grinding position. If necessary, latching positions can be provided to secure the mounting positions of the wall part.
  • the circumferential bead As a protective strip separate from the hood, which is fastened to the machine frame and therefore also runs protectively around the cutting edge of the circular knife when the hood is removed. Now the entire circular knife is covered in the circumferential area. In a partial area there is a thickness plate brought into its zero position when cleaning, which determines the slice thickness of the clippings in use. In the entire remaining circumferential area, the protective strip is now arranged according to the invention.
  • the protective strip can also perform other important functions. If, on the inner edge of the protective strip facing the cutting edge of the circular knife, a shape is provided which engages behind the grinding wheel with its upper circumferential area when the wall part carrying the grinding tool is mounted on the protective hood, then this protective strip forms a connection with the wall part carrying the grinding tool Lock that normally precludes releasing the guard from the machine frame. To do this, it is first necessary to detach the wall part carrying the grinding wheel from the hood, which in the case of the aforementioned thrust-like connection requires the wall part to be pulled out. Only then is the protective strip released by the grindstone and enables the hood to be lifted off. This ensures that only experienced people who know this sequence of movements can remove the hood from the machine.
  • the protective strip can be to serve as a support for a spring element which positions the neutral rest position of the protective hood. Now it is also possible to design this spring member very inexpensively and foolproof as a two-leg leaf spring, which includes the blade-shaped protective strip with its spring legs in the case of assembly.
  • the protective strip can interact with guide surfaces on the protective hood during the assembly process, which ensure the correct position of the hood on the machine frame and prevent damage to the circular knife. These guide surfaces can also form stops which interact with the protective strip in the assembled state of the hood and serve to limit the pivoting angle when the hood is to be brought into the grinding position.
  • the slicing machine 10 comprises a machine frame 11, in which a drive motor for rotating a circular knife 12 is provided.
  • Fig. 1 shows the view of the housing part 13 of this drive motor, while on the opposite side of the machine 10 there is a carriage, not recognizable, which serves to hold the material to be cut and which can be moved back and forth in a plane approximately parallel to the circular knife 12 .
  • a thickness plate 14 which can be adjusted by a handle 16 in its parallel spacing with respect to the cutting edge 15 of the circular knife 12 in the sense of the double arrow 17 shown. This setting determines the thickness of the cut product.
  • a hood 18 which, as can best be seen from FIG. 2, surrounds a rank section 19 of the circular knife 12 in a protective manner.
  • the hood 18 is provided with a bead 20 located on it, which surrounds the cutting edge 15 of the knife 12 circumferentially at a distance.
  • the hood 18 also serves to hold an abrasive tool, which here consists of a rotatably mounted grinding wheel 21 and a trimming stone 22. While the deburring stone 22 is fastened on the inside of the one side wall 23 of the hood 18, the grinding wheel 21 sits with its bearing block 24 on a special wall part 25 which closes an opening 26 in the ceiling 27 of the hood 18 in the case of assembly.
  • the wall part 25 here consists of a cover 25 which can be moved via a handle 87 and which requires a special kind of steering movement for its assembly.
  • the hood 18 sits with a bush 33 on an axle bolt 34 and determines the pivot axis 35, indicated by dash-dotted lines in FIG. 2, about which the hood 18 can be pivoted in two alternative grinding positions.
  • the hood 18 is normally held in its rest position shown in FIG. 2 by a spring member 36, the design of which can be seen from the sectional views of FIGS.
  • the block 40 finally has an opening 43 extending transversely to the bore 41 for inserting a pin 42 which is fixedly connected to the machine frame 11 and which ensures that the block 40 is pivoted at this point.
  • the hood 18 is mounted with the machine frame 11 in that on the one hand the sleeve 33 and the axle bolt 34 and on the other hand the plug opening 43 and the pivot 42 are coupled to one another.
  • a monitoring switch 44 indicated in FIG. 2 which is arranged in a safety circuit and interrupts the power supply for driving the circular knife 12 when the hood 18 is removed.
  • a control pin 45 can be longitudinally displaceably received in a longitudinal bore of the axle pin 34, which is supported at one end on an adjusting screw 76 for adjustment purposes in a bush 33 and at the other end rests on a resilient tongue 47, which acts on a key actuator 48 of the switch 44. If the hood 18 is removed, the tongue 47 releases the pushbutton actuator 48, which then moves a monitoring switch 44 into its “off” position. The safety circuit is broken.
  • the drive of the circular knife 12 cannot be switched on. If, on the other hand, the hood 18 is put on, the weight presses via the threaded pin 46 and the control pin 45 onto the tongue 47, which presses the button actuator 48 into the switch 44 and thereby closes the safety circuit. Now the drive of the circular knife 12 can be switched on.
  • FIG. 5 to 11 show another exemplary embodiment of a slicing machine 10 'according to the invention, where, for the sake of a better overview, insofar as there are no fundamental deviations, the same reference numerals as in the previous exemplary embodiment have been used in the machine 10. In this respect, the previous description applies.
  • FIG. 5 a central cover plate 49, which can be seen in the sectional view of FIG. 11, has been removed in order to obtain a view of the circular knife 12 and its surroundings. For the same reason, a hood 51 has been removed here.
  • a circular sector 52 lies in front of the cutting edge 15 of the circular knife 12 in a gap distance 53 an end edge 54 of the thickness plate 14 already mentioned in the first exemplary embodiment.
  • a protective strip 50 which in this exemplary embodiment is designed as a profiled blade, the cross section of which can be seen in FIG. 10, which is in the form of a sickle at a close distance the cutting edge 15 of the knife 12 runs around.
  • This protective strip 50 thus also extends in the upper edge area 56 of the knife 12 used to hold the hood 51, as shown in FIG. 5.
  • the strip, as the strip 50 ' shows in the radial section of FIG.
  • the deep-drawn leg 57 of the angle profile also closes lateral access to the sharp cutting edge 15 in a particularly good manner.
  • the protective strip 50 or 50 ' is firmly connected to the machine frame 11, which is done, for example, by the tab 58 shown in FIG. 1 between the frame and the strip 50.
  • the hood 51 here carries a bolt 59 with a conical end, which, as shown in FIG. 6, can be inserted into a bushing 60 provided on the machine frame 11 and for directional purposes may have a longitudinal groove 61 which, with the shaft end, leads into the interior of the bushing 60 protruding screw 61 or the like cooperates.
  • the end of the bolt 59 is provided with a widened head 63 which has a gap 64 aligned with the longitudinal groove 61 for the passage of the aforementioned shaft end of the screw 62.
  • the head 63 already precludes the ability to insert the bolt 59 into the bush 60 because the end face of the head 63 abuts the shaft end of the screw 62. Conversely, in any other rotational position of the hood 51, it is not possible to move the head 63 past the shaft end of the screw 62 because this shaft end is against the inside shoulder of the head 63. In the fully inserted state of the bolt 59, the shaft end of the screw 62 finally comes into an extension 65 at the upper end of the longitudinal groove 61, as a result of which a limited pivoting of the hood 51 about the pivot axis 35 indicated by dash-dotted lines in FIG. 6 is possible in a similar manner to that in the first exemplary embodiment the machine 10 recognizable.
  • a spring member which, in the present case, consists of a two-legged leaf spring 66 which, when the hood 51 is in the installed state, receives a section of the protective strip 50 between its two legs 67, as shown by the dot-dash line in FIG indicated position of the protective strip 50 can be seen.
  • the leaf spring 66 is thus supported on both sides of the protective strip 50 and thereby determines the neutral rest position of the hood 51, where both elements 21, 22 of the grinding tool are ineffective with respect to the circular knife 12.
  • the effective grinding position of the grinding tool 21, 22 is achieved in the case of assembly of the complete hood 51 or 18 in both exemplary embodiments of the invention by the same hand movement, which is why this can be illustrated for both machines 10, 10 'with reference to FIG. 1.
  • the hood is pressed in the direction of arrow 68 in FIG. 1, the grinding wheel 21 comes to rest on the edge 15 of the circular knife 12 and sharpens it.
  • the protective strip 50 there is provided with a recess 69 into which the grinding stone 21 fits with its outline in the installed state.
  • the cutting edge 15 of the knife would be accessible for grinding purposes without weakening the protective strip 50 through such cutouts 69 if the strip were deformed in the area of the grinding wheel 21.
  • the movement 68 takes place against the restoring action of the spring member 36 in the machine 10, as a result of which the helical spring compresses between the block 40 there and the receptacle 37 on the pin 38. In the case of the machine 10 ', only the relevant leg 67 of the leaf spring 66 is deformed.
  • the deburring stone 22 of the grinding tool can be put into effect when the hood 18 or 51 is pivoted in the direction of the opposite arrow 70 indicated in FIG. 1. Now the deburring stone 22 comes into contact with the circular knife 12 from the opposite side and deburrs the cutting edge 15.
  • the end of the pin 30 in the receptacle 37 is removed from the block 40 rotatably mounted at 42, as a result of which the coil spring 36 is elongated and tends to contract again.
  • the one leg end 67 of the leaf spring 66 is deformed by being supported on the protective strip 50. If you let go of the hood 18 or 51, it will automatically return to its starting position of the aforementioned rest position due to the spring action at 36 or 66.
  • the hood 51 Apart from a hood extension 72, which allows a channel 73 for the passage of the circular knife 12 against the thickness plate 14, the hood 51 has a rectangular outline. However, apart from the top wall 74, only three side walls 75, 76, 77 are fixedly connected to the actual hood 51, while the fourth side wall, as best shown in FIG. 9, is missing and instead has an opening 78 into which a thrust-like structure 80 is introduced.
  • This consists of a sliding plate 81, which is accommodated in a longitudinally displaceable manner in guides 82 mounted on the underside of the top wall 74, and of an end plate 79 running at right angles thereto, which forms the missing side wall of the hood 51 when this push-like structure 80 is fully inserted, as shown in FIG. 8 emerges.
  • the bearing block 24 mentioned above for the rotary mounting of the grinding wheel 21 is fastened in a specific inclination position.
  • the longitudinal position of the grinding wheel 21 can be readjusted by loosening a screw 87 which engages a bush 88 of the shaft 89.
  • the edge areas of the end plate 79 overlap the contours of the adjacent side walls 75, 77 and the top wall 74 of the hood 51 and come to abut against the associated edges 83, as can be seen from FIGS. 7 and 8.
  • This stop action at 83 fixes the end position of the thrust 80 and the end position of the grinding wheel 21.
  • the insertion direction 86 of the push 80 and the mentioned pressure application 68 for pivoting the hood 51 into its mentioned grinding position have the same direction, as can be seen from FIG.
  • this pressure is exerted 68, the force is transmitted from the end plate 79 to the abutting edges 73 of the walls 74, 75, 77.
  • the thrust 80 In order to be able to remove the hood 51 completely, the thrust 80 must be pulled out in whole or in part, because then the grinding wheel 21 comes out of the recess 69 in the protective strip 50. Now the hood 51 can, against the direction of the assembly arrow shown in Fig. 6 le 71 are lifted until the legs 67 of the leaf spring 66 release the part of the protective strip 50 which it encompasses and the bolt 59 has come out of the bush 60 in the machine frame 11. If this should not already have happened, the thrust 80 can now be pulled out of the hood 51, making the interior particularly easy to clean. The upper area 56 of the machine 10 ', which is otherwise covered by the hood 51, can now be cleaned conveniently, the risk of injury on the cutting edge 15 of the knife 12 being eliminated by the protective strip 50 running along it.
  • a guide effect can also be achieved by profiling the inside of the hood, which according to FIG. 10 consists of an inner rib 84 and the inner surface 85 of the side wall 76 is formed.
  • protective strip 50 interacts with these profiles 84, 85 and is guided into the intended space.
  • the ends of the legs 67 of the leaf spring 66 also serve as further guide means when these are pushed over the protective strip 50 in the sense of the left-hand mounting arrow 71 from FIG. 6.
  • FIGS. 5 to 10 To better secure the insertion position, it is also advisable in the exemplary embodiment of FIGS. 5 to 10 to provide latching positions between the drawer 80 and the hood 51.
  • these consist of a spring-loaded ball indicated in FIG. 6, which is embedded in a bore in the sliding plate 81 and, in the case of coupling, cooperates with a corresponding recess on the inner surface of the top wall 74.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (13)

1. Trancheuse (10 ; 10') avec un dispositif d'affûtage (21, 22) pour le couteau circulaire rotatif (12), auquel cas le dispositif d'affûtage une meule de l'aiguisoir (21) et, le cas échéant, une pierre ébavureuse (22), ce dispositif étant disposé à l'intérieur (32) d'un capot de protection (18 ; 51), qui enveloppe, en la protégeant, une portion (56) du bord du couteau circulaire (12) ; le capot protecteur (18 ; 51) est rendu solidaire du bâti (11) de la trancheuse (10 ; 10') par l'intermédiaire d'un axe de pivotement (35) à peu près parallèle au plan du couteau circulaire (12) et au départ d'une position de repos, dans laquelle se trouve le dispositif d'affûtage (21, 22) qui est écarté du couteau circulaire (12), il peut pivoter en position d'affûtage dans laquelle le dispositif d'affutage (21, 22) attaque efficacement la lame circulaire (12) en rotation, caractérisée par le fait que le capot protecteur (18 ; 51) présente un panneau (25 : 80) qui peut s'en détacher, sur lequel à tout le moins la meule (21) de l'aiguisoir est fixée, et par le fait qu'à l'intérieur du capot protecteur (18 ; 51), le bord tranchant (15) du couteau circulaire (12) est entouré d'un bourrelet circonférentiel (20 ; 50 ; 50') tout au moins le long de la portion du bord (56) qui s'y trouve.
2. Trancheuse suivant revendication 1, caractérisée par le fait que le bourrelet (20) est une pièce constitutive du capot protecteur (18) (figure 2).
3. Trancheuse suivant revendication 1, caractérisée par le fait que le bourrelet (20) se présente comme un jonc protecteur (50 ; 50') séparé du capot (51), qui est fixé sur le bâti de la trancheuse (11) et qui, même en cas d'enlèvement du capot (51), demeure dans sa position de protection par rapport à l'arête tranchante (15) du couteau circulaire (12).
4. Trancheuse suivant revendication 3, caractérisée par le fait que le jonc protecteur (50 ; 50') est disposé le long de toute la zone circonférentielle restante (55) du couteau circulaire (12). qui se trouve en dehors de la plaque d'épaisseur (14), qui détermine l'épaisseur des tranches à débiter.
5. Trancheuse suivant revendication 3 ou 4, caractérisée par le fait que le jonc protecteur (50 ; 50') présente sous son bord intérieur orienté vers l'arête tranchante (15) du couteau circulaire (12) un profil (69) qui, avec sa pièce circonférentielle supérieure, accroche la meule (21), de l'aiguisoir, lorsque le panneau (80) supportant le dispositif d'affutage est monté sur le capot protecteur (51).
6. Trancheuse suivant une ou plusieurs revendications 3 à 5 caractérisée par le fait qu'un élément à ressort déterminant la position de repos du capot protecteur (51) s'appuie tel un ressort à lames (66) à deux branches (67) sur le jonc protecteur (50 ; 50').
7. Trancheuse suivant une ou plusieurs revendications 3 à 6 caractérisée par le fait que, dans l'espace intérieur du capot (51), sont ménagées des surfaces (84, 85) latérales de guidage, qui, lors de l'opération de mise en place (71) du capot (51) ont un effet d'alignement (figure 10) sur le bâti de la trancheuse (11) avec le contour du jonc protecteur (50 ; 50').
8. Trancheuse suivant revendication 7 caractérisée par le fait que, le capot (51) se trouvant en place, la surface de guidage (84, 85) forme avec le jonc protecteur (50 ; 50') des butées destinées à limiter le mouvement de pivotement (68 ; 70) du capot (51).
9. Trancheuse suivant une ou plusieurs revendications 1 à 8 caractérisée par le fait que le panneau (25) supportant la meule de l'aiguisoir (21) est embrayable dans un orifice (26) se trouvant tout particulièrement dans la paroi (27) recouvrant le capot (18) par l'intermédiaire d'une connexion à baïonnette.
10. Trancheuse suivant une ou plusieurs revendications 1 à 8 caractérisée par le fait que le panneau (80) supportant la meule de l'aiguisoir (21) obture (79) un orifice (78) ménagé tout particulièrement dans la paroi latérale du capot (51) par l'intermédiaire d'une liaison coulissante (81, 82).
11. Trancheuse suivant revendication 10 caractérisée par le fait que l'orifice (78) est le résultat de l'absence de tout un panneau latéral et que le panneau supportant la meule de l'aiguisoir adopte la forme d'un tiroir (80) constitué d'une plaque terminale (79), qui, à l'état de montage, forme la paroi latérale du capot et d'une plaque coulissante (81) formant équerre, pénétrant à l'intérieur du capot et qui est libre en translation (86) sur la paroi protectrice (74) du capot (51), et ce grâce à des glissières (82).
12. Trancheuse suivant revendication 11 caractérisée par le fait que la plaque terminale (79) recouvre en guise de butée les arêtes (83) des parois de capot avoisinantes (74, 75, 76, 77) et amortit la pression de la main (68) lors du mouvement de pivotement du capot (51).
13. Trancheuse suivant une ou plusieurs revendications 10 à 12 caractérisée par le fait que le sens du déplacement longitudinal (86) du tiroir (80) coïncide avec le sens (68) du mouvement de pivotement du capot (51) dans sa position d'aiguisage.
EP82102659A 1982-03-30 1982-03-30 Trancheuse ayant un dispositif d'affûtage pour le couteau circulaire Expired EP0090064B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8282102659T DE3271328D1 (en) 1982-03-30 1982-03-30 Slicing machine with a sharpening device for the circular knive
EP82102659A EP0090064B1 (fr) 1982-03-30 1982-03-30 Trancheuse ayant un dispositif d'affûtage pour le couteau circulaire
AT82102659T ATE19987T1 (de) 1982-03-30 1982-03-30 Aufschnittschneidemaschine mit einem schleifzeug fuer das rotierende rundmesser.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82102659A EP0090064B1 (fr) 1982-03-30 1982-03-30 Trancheuse ayant un dispositif d'affûtage pour le couteau circulaire

Publications (2)

Publication Number Publication Date
EP0090064A1 EP0090064A1 (fr) 1983-10-05
EP0090064B1 true EP0090064B1 (fr) 1986-05-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP82102659A Expired EP0090064B1 (fr) 1982-03-30 1982-03-30 Trancheuse ayant un dispositif d'affûtage pour le couteau circulaire

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EP (1) EP0090064B1 (fr)
AT (1) ATE19987T1 (fr)
DE (1) DE3271328D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5101704A (en) * 1991-02-15 1992-04-07 Premark Feg Corporation Slicer knife guard and sharpener
CN104139421A (zh) * 2014-07-19 2014-11-12 苏州创维晟自动化科技有限公司 一种移动式分切机安全阻挡装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2030197A (en) * 1934-01-15 1936-02-11 American Slicing Machine Co Slicing machine
GB532298A (en) * 1939-08-25 1941-01-21 Berkel Patent Nv Improvements relating to slicing machines
US3958478A (en) * 1974-09-03 1976-05-25 Hobart Corporation Sharpener for commodity slicing machine

Also Published As

Publication number Publication date
EP0090064A1 (fr) 1983-10-05
DE3271328D1 (en) 1986-07-03
ATE19987T1 (de) 1986-06-15

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