EP0070043B1 - Plaque de cuisson électrique - Google Patents

Plaque de cuisson électrique Download PDF

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Publication number
EP0070043B1
EP0070043B1 EP82108180A EP82108180A EP0070043B1 EP 0070043 B1 EP0070043 B1 EP 0070043B1 EP 82108180 A EP82108180 A EP 82108180A EP 82108180 A EP82108180 A EP 82108180A EP 0070043 B1 EP0070043 B1 EP 0070043B1
Authority
EP
European Patent Office
Prior art keywords
cover plate
hotplate
screw
sheet metal
electric hotplate
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
EP82108180A
Other languages
German (de)
English (en)
Other versions
EP0070043A2 (fr
EP0070043A3 (en
Inventor
Karl Fischer
Felix Schreder
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.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Gerate Blanc und Fischer 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 EGO Elektro Gerate Blanc und Fischer GmbH filed Critical EGO Elektro Gerate Blanc und Fischer GmbH
Priority to DE8080104743T priority Critical patent/DE3064273D1/de
Publication of EP0070043A2 publication Critical patent/EP0070043A2/fr
Publication of EP0070043A3 publication Critical patent/EP0070043A3/de
Application granted granted Critical
Publication of EP0070043B1 publication Critical patent/EP0070043B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/06—Arrangement or mounting of electric heating elements
    • F24C7/067—Arrangement or mounting of electric heating elements on ranges
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/70—Plates of cast metal

Definitions

  • the invention relates to an electric hotplate with a hotplate body and a cover plate covering its underside, which is fastened by means of a screw to a pin of the hotplate body, the screw or the like also for fastening the electric hotplate to a stove, a hob or the like. serves.
  • a conventional hotplate of this type is known from CH-A-262 513, DE-C.631 467 and GB-A-451 052.
  • a threaded bolt is screwed into the central pin of the hotplate body and a cover plate is fixed by means of a nut screwed thereon, possibly with the interposition of a spacer sleeve.
  • two screwing operations must be carried out.
  • the threaded bolt protrudes far from the hotplate, so that the packing mass is twice as large as the entire hotplate height and, in addition, an axis offset must be made between adjacent hotplates during transport if you do not want to increase the packing mass even further.
  • the protruding part of the threaded bolt is intended to fasten the hotplate to a bracket by means of a further screwed-on nut, whereby the hotplate is stretched downwards.
  • the object of the invention is to further improve the above-mentioned hotplate in such a way that the mounting and storage or transport costs are reduced when the cover plate is fastened more advantageously.
  • the screw is a hollow cap screw with an external and internal thread, which fixes the cover plate with its head, and into which a fastening screw for the electric hotplate can be screwed.
  • the center bolt was previously used (see CH-A-262 513) to fasten the earth connection.
  • Earth connection cables were often attached to the central threaded bolts by screwing them down.
  • the invention provides an improvement in that at least one sheet metal part with at least one section which projects outward from the central region and is readily bendable is clamped between the screw holding the cover plate, which can be screwed into the center peg of the hotplate, and the cover plate. Earthing cables can be plugged, clamped or welded onto its ends.
  • the same or a corresponding sheet metal part can advantageously also be used to create an anti-rotation device. For this purpose, pins protruding downward from the middle of the usual hotplates were riveted to the cover plate and engaged in corresponding holes in the fastening parts.
  • two of the sections may be preferably of the shroud deflectable ends to prevent rotation of the electric hotplate with fixing parts on the cooker, the cooking hob od g l. work together. These ends can still lie flat against the cover plate during transport and are only bent downwards by approx. 90 ° when they are required to prevent rotation during assembly.
  • an anti-rotation element that does not interfere with transport, in that at least one sleeve-like recess, closed to the interior of the hotplate, is provided in the lower cover plate of the electric hotplate for receiving an anti-rotation pin fastened to a fastening part. So here the cover plate is not interrupted and a countersunk anti-rotation device is still created.
  • the associated pin is not attached to the hotplate here, but rather to the fastening parts, for example a bracket passing under the hotplate, and thus does not interfere with transportation.
  • an electric hotplate 11 which has a hotplate body 12 made of cast iron with an upper flat and closed cooking surface 13.
  • the unheated central zone 14 is lowered, so that an annular cooking surface is created.
  • the hotplate body overlaps on its outer circumference via an overhang edge 15 made of sheet material of essentially U-shaped cross section, which is supported on the raised opening edge 16 of the worktop 17 of an electric cooker or hob.
  • the hotplate In the heated ring area, the hotplate is provided with spirally extending ribs, which likewise form spiral grooves 18 between them, in which heating coils 19 lie in a ceramic investment 20.
  • the edge 21 has a cutout 26 in the form of a square cutout (FIG. 8), in which a corresponding design 27 of the cover plate is placed and thus ensures that the cover plate 24 is secured against rotation on the hotplate body despite a relatively tight seal.
  • the shape 27 of the cover plate in turn ensures that the finished hotplate can be aligned in the circumferential direction during its handling during manufacture. As a result, no inner projection is necessary at the edge 21.
  • Adjoining the step 25 is an area 28 of the cover plate which springs back in relation to the edge area 23 and is adjoined by a central area 29 which projects somewhat in relation to the edge area 23.
  • the hotplate body has a downwardly projecting pin 30, into which a blind threaded bore 31 projects from below.
  • a hollow cap screw 32 which is shown in detail in FIG. 9, is screwed into this threaded bore. It consists of a sheet metal stamping or deep-drawn part with a flange-like head region 33 with a hexagon key surface and an adjoining sleeve-shaped threaded section 34, into which an internal and external thread is pressed or pressed.
  • the screw 32 protrudes through a central hole 36 of the cover plate 24 and is screwed into the thread 35 of the bore 31 so that the cover plate 24 is pressed with its edge region 23 against the lower edge 22 of the edge 21 of the hotplate body 12.
  • a sheet metal part 37 (FIG. 2) is interposed, which has the shape of a sheet metal strip which has a hole 38 on one side through which the screw 32 projects, while the other end is somewhat tapered and with a bent end 39 (FIGS. 1 and 2) comprises an earth line 40.
  • the grounding line can be pressed or welded to the sheet metal part 37.
  • This sheet metal part is simply placed under the screw head 33 in the manner of a washer and enables a safe earth connection. It is particularly advantageous that the sheet metal part lies flat against the underside of the cover plate 24 during manufacture and shipping and is only bent off from it if necessary. The earth connection therefore does not significantly increase the height of the hotplate.
  • FIG. 9 shows on the left-hand side that the contact surface of the head 33 can be provided with a preferably star-shaped corrugation 41. Accordingly, the sheet metal part 37 is provided on its top and bottom and the cover plate 24 (see FIGS. 2 and 15), whereby the screw 32 is secured against accidental loosening. However, it is also possible to provide other types of backup.
  • the hotplate is held in the worktop opening receiving it by a bracket 42, which is supported on the underside of the worktop 17 and has a wrong U-shape. Its long back is stiffened by side bends 43.
  • a cap screw 45 projects through a hole 44 in the middle of the bracket and is screwed into the internal thread in the hollow screw 32.
  • Screw 32 is a simple stamped sheet metal part and screw 45 is a simple machine screw. So far, the hot plates have been provided with bolts which were screwed into the pin 30 and which protruded far beyond the underside of the hot plate.
  • An upwardly projecting pin 47 is riveted to the bracket 42, which in one piece in a sleeve-like manner from the cover plate inwards molded recess 46 engages and thus secures the hotplate against rotation against the bracket.
  • several recesses 46 can be provided on the circumference, possibly also offset by 90 ° from one another.
  • Fig. 3 shows a variant for the recess 46, which can be selected if the sheet metal from which the cover plate 24 is made should not be subjected to excessive deformation.
  • a separately produced sleeve 46 ' is tightly fastened in an opening of the cover plate 24 by means of a two-sided flange 46 ". It is also possible, for example in the region of the flange 46", with a pressed-in thread for subsequently screwing in a pin Mistake.
  • Fig. 4 shows in a detailed representation that between the edge area 24 of the cover plate 24 and the lower edge 22 of the hotplate edge 21, a sealing ring 25 is interposed, which can have a flat or circular cross-sectional shape and consists of a heat-resistant sealing material. Silicone rubber, asbestos-containing sealing materials etc. are suitable for this. Further seal designs are shown in FIGS. 5 and 6, wherein in FIG. 5 the seal 25a consists of a paste which has been introduced into the angle between the edge region 23 and the step 25 and which, when pressed on, passes over the lower edge 22 and the inside of the edge 21 distributed. In this embodiment, the possibility of sealing in the region of the recess 26 is particularly advantageous.
  • This sealing ring can consist of a molding compound which is made from an alumina-silicate fiber and is impregnated with a varnish based on silicone resin.
  • the seal is intended to prevent moisture from penetrating into the interior 48 of the hotplate and thus possibly. in the investment 20 to avoid when the hotplate is exposed to extreme conditions, such as sea transport. Although the hotplate immediately expels any moisture that may have entered itself without generating previously unacceptable leakage currents, the seal represents an additional security.
  • the seal is made possible in particular by the cover plate being placed on the lower flange, because this seals the seal into one Range comes lower temperature and can be designed better. Previous cover plates were on the underside of the investment material 20. Level 25 ensures additional sealing and perfect centering.
  • edge 21 'of the hotplate body has a step-shaped recess 49 on its inner underside, so that an outer circumferential edge section 50 of the edge 21' is formed, which extends somewhat further downward than the contact surface for the edge area 23 of the cover plate 24.
  • edge 21 'of the hotplate body has a step-shaped recess 49 on its inner underside, so that an outer circumferential edge section 50 of the edge 21' is formed, which extends somewhat further downward than the contact surface for the edge area 23 of the cover plate 24.
  • a metal foil 51 which is in particular a bare aluminum wrinkle foil, lies approximately parallel to the cover plate in the interior 48. It is clamped between the edge 21 and the cover plate 24 or the seals provided (see FIGS. 4 to 7) and includes a layer 52 between itself and the cover plate 24, which preferably consists of or contains silica gel or diatomaceous earth.
  • This material not only ensures good insulation, but also that the z. B. water penetrated with the air humidity is used in the silica gel serving as a drying agent.
  • the drying agent is always regenerated automatically when the water is expelled, so that it always remains effective.
  • a desiccant it may be appropriate to perforate the metal foil or to place the desiccant in other containers in the interior 48 to ensure its effectiveness.
  • the layer 52 is possible to produce the layer 52 from highly heat-resistant insulating materials, for example inorganic fibers such as asbestos or other known insulating materials. Together with the metal foil lying on top, a very effective insulation is formed, which further reduces the heat losses due to radiation and convection downwards, which are in any case small in the case of a contact hotplate. However, this above all keeps the temperature of the cover plate 24 low, so that it can be installed even in the flattest cooktops near wooden parts in kitchen furniture.
  • highly heat-resistant insulating materials for example inorganic fibers such as asbestos or other known insulating materials.
  • FIG. 10 shows three hotplates stacked one on top of the other, which apart from the fact that the sheet metal part 37 '(see also FIG. 11) is provided with a flat tongue 53 for connecting a corresponding flat connector 54 for the grounding line 40, with the hotplate according to FIG 1 are identical.
  • like reference numerals designate like parts.
  • the cut is in FIG. 10 compared to FIG. 1 offset by 45 °, so that it can be seen that an insulating piece 55, which is supported on the inside of the cover plate 24 and extends through the cover plate 24, contains a temperature limiter in its section lying in the interior 48 and has continuous openings 57 (FIG.
  • connection lines 58 provided with highly heat-resistant insulation protrude from the interior 48, where they are welded with connection pins protruding from the investment material 20.
  • the basic shape of the insulating piece 55 is elongated in the circumferential direction and it projects in the region of a bulge 60 through the cover plate.
  • connection lines 58 are connected to a common connection piece 75 made of ceramic insulating material (FIGS. 10 and 15), which contains plug-in or screw-type connection terminals 76 for connecting current supply lines 78.
  • the width of the depression is significantly larger than that of the insulating piece, so that, as can be seen from FIG. 10 for the two upper hot plates, the connecting lines 58 can be folded inwards and the connecting piece 77 can lie next to the insulating piece in the depression 61 . It is also possible to store the connection piece 77 (FIG. 10 below) folded outward approximately in one plane with the hotplate, the connection lines 58 leading through a corresponding cutout in the packing plate 63.
  • the hotplates with their central axes are stacked one above the other with their flat cooking surfaces 13 and with their undersides covered by the cover plates 24, only a sheet or film 62 being inserted between the cooking surfaces 13 to prevent scratches, while between the hotplates
  • a packing plate 63 is placed on the underside, which can consist of plywood or chipboard and has recesses which are selected such that the hotplate is centered on it when it is placed on it. Parts of the hotplate projecting downward from the outer edge 23 of the cover plate protrude into the recess 64 of the packing plate 63.
  • the hot plates 11 are each offset by 180 ° in the circumferential direction, so that the insulating piece 55 with the connecting lines protrudes into the depression 61 and the hot plate even requires a smaller packing space than its total height.
  • the edges 21 are supported with the interposition of the packing plate 63, in that a solid stack is formed which does not tend to tip over.
  • the aligned arrangement of the hot plates also contributes to this.
  • the packing plates 63 have numerous recesses 64 side by side and one behind the other in accordance with the desired packaging or pallet size, so that a large number of hot plates can be stored and transported in a solid block, not only saving on storage and transport costs, but also accident safety elevated. Packing can also be done fully automatically using grippers.
  • FIGS. 12 to 15 Another device is shown in FIGS. 12 to 15 in order to ensure that the hotplate is secured against rotation relative to fastening parts, for example the bracket 42.
  • a sheet metal part 65 is used, which has the shape of a flat right-angled strip which extends in the area of the bend 66. Lateral incisions 67 separate edge areas at the ends of the sections 68, which are bent or rolled up around the ends (see in particular FIG. 13), so that the ends are pin-like.
  • U-shaped cutouts 70 are provided in the sections 68, so that sheet metal tabs 71 are formed which are bent out of the plane of the sections 68. 14 shows this sheet metal part 65 in the installed state.
  • the ends 69 are preferably only when the hotplate is installed in a stove or the like. bent by about 90 °, which is easily possible due to the incisions 67. It is only necessary to bend the end 69 which is to be inserted into a hole 73 in the mounting bracket 42 '. An anti-rotation lock is also created here without increasing the transport space.
  • the anti-rotation sheet metal part 65 could be provided with a third section 37 ", at the end of which a flat tongue 53 is arranged for connecting an earth line.
  • a single part can have a dual function, namely anti-rotation and 15, it is also possible, as shown in Fig. 15, for the sheet metal part 37 'to be screwed on in addition to the anti-rotation sheet metal part 65 by means of the screw 32. Since the part 65 is secured against rotation anyway, a corrugation 41 on it is sufficient, without it being necessary on the cover plate.
  • the depression 61 lies diametrically opposite the insulating part 55. It would of course also be possible to provide an offset at a different angle. Accordingly, the depression 61 would also have to be offset by a different angle with respect to the insulating piece 55.
  • the end plate has the advantage that, despite sufficient rigidity, it is easy to manufacture due to the not very deep deformation and creates a well-insulated, closed interior.
  • the cover could rest on the outer edge 21 as well as on the inner edge surrounding the sensor recess with one step following the cover plate. The fastening could also be done there using banjo bolts. In this case, the pin with the internal thread would not lie centrally but, for example, in the area of the outer edge.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Baking, Grill, Roasting (AREA)
  • Resistance Heating (AREA)
  • Electric Stoves And Ranges (AREA)
  • Cookers (AREA)
  • Table Devices Or Equipment (AREA)

Claims (10)

1. Plaque de cuisson électrique, comportant un corps (12) et une tôle de recouvrement (24) qui recouvre la face inférieure de ce corps et est fixée, au moyen d'une vis (32), à un tenon (30) du corps (12) de la plaque de cuisson, ladite vis (32) servant également à fixer la plaque de cuisson électrique (11) à un réchaud, à une table de cuisson encaissée ou à un élément analogue, caractérisée par le fait que la vis (32) est une vis creuse à tête pourvue de filetages externe et interne, qui bloque par sa tête (33) la tôle de recouvrement (24) et dans laquelle peut être inséré un boulon (45) de fixation de la plaque de cuisson électrique (11).
2. Plaque de cuisson électrique selon la revendication 1, caractérisée par le fait que la vis (32) consiste en une douille en tôle munie d'une zone de tête (33) à ourlet du type collet, ainsi que d'un filetage venu de compression.
3. Plaque de cuisson électrique selon la revendication 1 ou 2, caractérisée par le fait qu'une striure.(41), prévue du côté de la zone de tête (33) tourné vers la tôle de recouvrement (24), coopère éventuellement avec une striure (41) de préférence en forme d'étoile, respectivement ménagée sur la tôle de recouvrement (24) ou sur une pièce intercalaire (37, 65), afin de bloquer la vis (32).
4. Plaque de cuisson électrique selon l'une des revendications précédentes, caractérisée par le fait qu'au moins une pièce en tôle (37, 37', 65), présentant au moins une région (68) éventuellement ployable, saillant vers l'extérieur à partir de sa région médiane et réalisée de préférence pour l'installation d'un conducteur de mise à la masse (40), est enserrée entre la tôle de recouvrement (24) et la vis (32) qui retient cette tôle de recouvrement (24) et peut être engagée dans un tenon (30) de la plaque de cuisson électrique (11).
5. Plaque de cuisson électrique selon la revendication 4, caractérisée par le fait que la pièce en tôle (37') présente, à son extrémité, une fiche emboîtable de raccordement (53).
6. Plaque de cuisson électrique selon l'une des revendications 4 ou 5, caractérisée par le fait que la région (68) possède, à son extrémité (69), un sertissage destiné à assujettir par coincement ou par soudage un conducteur de mise à la masse (40).
7. Plaque de cuisson électrique selon l'une des revendications 4 à 6, caractérisée par le fait que de préférence deux des régions (68) possèdent des extrémités (69) pouvant être cintrées à l'écart de la tôle de recouvrement (24) et coopérant, en vue du verrouillage anti-rotation de la plaque de cuisson électrique (11), avec des pièces de fixation (42') solidaires du réchaud, de la table de cuisson encaissée ou élément analogue.
8. Plaque de cuisson électrique selon la revendication 7, caractérisée par le fait que les extrémités (69) sont fabriquées d'un seul tenant avec la pièce en tôle (65), à la manière de fiches, à partir d'une tôle respectivement repliée sur elle-même ou sertie.
9. Plaque de cuisson électrique selon la revendication 7 ou 8, caractérisée par le fait que la pièce en tôle (65) est assujettie à la plaque de cuisson électrique (11) sans aucune faculté de rotation, par l'intermédiaire de languettes (71) qui sont cintrées à l'écart de la tôle et pénètrent dans des évidements (72) pratiqués dans la tôle de recouvrement.
10. Plaque de cuisson électrique selon l'une des revendications précédentes, caractérisée par le fait qu'il est prévu, sur sa tôle inférieure de recouvrement (24), au moins un renfoncement (46, 46') en forme de douille qui est fermé vers l'intérieur de la plaque de cuisson électrique, est façonné à partir de la tôle de recouvrement ou ménagé sur un orifice de cette tôle de recouvrement, et est destiné à recevoir une cheville (47) interdisant la rotation et fixée à une pièce de fixation (42), ou devant être vissée dans ledit renfoncement.
EP82108180A 1979-08-17 1980-08-12 Plaque de cuisson électrique Expired EP0070043B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8080104743T DE3064273D1 (en) 1979-08-17 1980-08-12 Electric cooking plate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792933296 DE2933296A1 (de) 1979-08-17 1979-08-17 Elektrokochplatte
DE2933296 1979-08-17

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP80104743.2 Division 1980-08-12

Publications (3)

Publication Number Publication Date
EP0070043A2 EP0070043A2 (fr) 1983-01-19
EP0070043A3 EP0070043A3 (en) 1983-06-01
EP0070043B1 true EP0070043B1 (fr) 1986-11-20

Family

ID=6078643

Family Applications (3)

Application Number Title Priority Date Filing Date
EP80104743A Expired EP0024621B1 (fr) 1979-08-17 1980-08-12 Plaque de cuisson électrique
EP82108179A Expired EP0070042B1 (fr) 1979-08-17 1980-08-12 Plaque de cuisson électrique
EP82108180A Expired EP0070043B1 (fr) 1979-08-17 1980-08-12 Plaque de cuisson électrique

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP80104743A Expired EP0024621B1 (fr) 1979-08-17 1980-08-12 Plaque de cuisson électrique
EP82108179A Expired EP0070042B1 (fr) 1979-08-17 1980-08-12 Plaque de cuisson électrique

Country Status (17)

Country Link
US (3) US4348581A (fr)
EP (3) EP0024621B1 (fr)
JP (1) JPS5631717A (fr)
AU (1) AU537864B2 (fr)
CA (1) CA1163298A (fr)
DE (4) DE2933296A1 (fr)
DK (2) DK352880A (fr)
ES (1) ES8103906A1 (fr)
FI (1) FI67464C (fr)
GR (1) GR68424B (fr)
HK (1) HK59184A (fr)
NO (1) NO153669C (fr)
PL (1) PL122796B1 (fr)
PT (1) PT71703B (fr)
TR (1) TR21050A (fr)
YU (1) YU42531B (fr)
ZA (1) ZA805011B (fr)

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Also Published As

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FI67464C (fi) 1985-03-11
JPS5631717A (en) 1981-03-31
ZA805011B (en) 1981-08-26
US4414466A (en) 1983-11-08
EP0070042A3 (en) 1983-06-01
AU6145980A (en) 1981-02-19
FI802550A (fi) 1981-02-18
PL122796B1 (en) 1982-08-31
DE3072014D1 (en) 1987-09-24
FI67464B (fi) 1984-11-30
EP0070042B1 (fr) 1987-08-19
AU537864B2 (en) 1984-07-19
EP0070043A2 (fr) 1983-01-19
CA1163298A (fr) 1984-03-06
ES494268A0 (es) 1981-03-16
YU205080A (en) 1982-08-31
DK69487A (da) 1987-02-11
HK59184A (en) 1984-08-10
US4467181A (en) 1984-08-21
TR21050A (tr) 1983-06-07
ES8103906A1 (es) 1981-03-16
GR68424B (fr) 1981-12-29
DK352880A (da) 1981-02-18
JPH0246206B2 (fr) 1990-10-15
EP0070043A3 (en) 1983-06-01
EP0070042A2 (fr) 1983-01-19
PT71703B (pt) 1981-06-25
YU42531B (en) 1988-10-31
EP0024621A1 (fr) 1981-03-11
US4348581A (en) 1982-09-07
DE3064273D1 (en) 1983-08-25
PL226286A1 (fr) 1981-02-27
NO802436L (no) 1981-02-18
EP0024621B1 (fr) 1983-07-20
DE3071840D1 (en) 1987-01-08
PT71703A (pt) 1980-09-01
DK69487D0 (da) 1987-02-11
NO153669B (no) 1986-01-20
DE2933296A1 (de) 1981-02-26
NO153669C (no) 1986-04-30

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