EP0002810B1 - Dispositif d'évacuation de liquides ou solides contenant des produits nocifs - Google Patents

Dispositif d'évacuation de liquides ou solides contenant des produits nocifs Download PDF

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Publication number
EP0002810B1
EP0002810B1 EP78101804A EP78101804A EP0002810B1 EP 0002810 B1 EP0002810 B1 EP 0002810B1 EP 78101804 A EP78101804 A EP 78101804A EP 78101804 A EP78101804 A EP 78101804A EP 0002810 B1 EP0002810 B1 EP 0002810B1
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EP
European Patent Office
Prior art keywords
water
pump
water jet
openings
jet pump
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
EP78101804A
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German (de)
English (en)
Other versions
EP0002810A1 (fr
Inventor
Erhard Crema
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Individual
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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 EP0002810A1 publication Critical patent/EP0002810A1/fr
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Publication of EP0002810B1 publication Critical patent/EP0002810B1/fr
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L7/00—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
    • A47L7/0004—Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners
    • A47L7/0014—Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners with additional means or devices between nozzle and casing
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/16—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with suction devices other than rotary fans
    • A47L5/18—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with suction devices other than rotary fans with ejectors, e.g. connected to motor vehicle exhaust
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L7/00—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
    • A47L7/0004—Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners
    • A47L7/0023—Recovery tanks
    • A47L7/0028—Security means, e.g. float valves or level switches for preventing overflow
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L7/00—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
    • A47L7/0004—Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners
    • A47L7/0042—Gaskets; Sealing means
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
    • E01H1/0827—Dislodging by suction; Mechanical dislodging-cleaning apparatus with independent or dependent exhaust, e.g. dislodging-sweeping machines with independent suction nozzles ; Mechanical loosening devices working under vacuum
    • E01H1/0836—Apparatus dislodging all of the dirt by suction ; Suction nozzles
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/10—Hydraulically loosening or dislodging undesirable matter; Raking or scraping apparatus ; Removing liquids or semi-liquids e.g., absorbing water, sliding-off mud
    • E01H1/108—Removing liquids or semi- liquids, e.g. absorbing rain water, sucking-off mud
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S210/00—Liquid purification or separation
    • Y10S210/918—Miscellaneous specific techniques
    • Y10S210/922—Oil spill cleanup, e.g. bacterial
    • Y10S210/924—Oil spill cleanup, e.g. bacterial using physical agent, e.g. sponge, mop

Definitions

  • the invention relates to a device for removing solid and / or liquid media containing pollutants.
  • the device is intended for a fire engine and uses the fire extinguisher pump present on the vehicle, which is followed by a water jet pump, through which the water taken from a water reservoir can be fed again, the media being able to be sucked in via a suction line through the vacuum on the other side of the water jet pump.
  • a device is known from French Patent No. 392808 and is suitable in principle for being usable everywhere and also for generating the necessary negative pressure.
  • the vehicle known from French Patent No. 392808 is completely and exclusively equipped with the units for generating the negative pressure and with the water supply. Therefore, the pollutants can get into the water cycle.
  • the solution according to the invention is that the water jet pump and a receptacle with a cyclone lid that can be connected to keep the media away from the water supply in the suction line are provided as an additional device, in which receptacle a connection to the ambient air can be established automatically before the media the outlet opening for the conveying air to reach.
  • Such a device for removing pollutants is mobile and can easily be carried as an additional device on a fire engine.
  • the rest of the equipment for a fire engine is retained and can be used as usual.
  • the removal of pollutants is carried out in a simple manner without the need for complex or additional drive units.
  • the removal of media containing pollutants is reliably possible. Not only can liquids be lifted from a depth of almost 10 meters, but also, for example, the water that arises during extinguishing work can be completely sucked off again, so that large-scale water damage can be avoided. With the aid of the invention, “dry suction” is possible.
  • the tank having at least one ventilation opening can be used by the fire-fighting vehicle.
  • the circuit is therefore composed of the tank as a container for the water reservoir and a connection between the water supply opening and the water outlet opening of the tank, the centrifugal pump and the water jet pump being arranged as an additional unit in the connecting line.
  • a known standard barrel can serve as a container for the water reservoir.
  • the fire pump of the vehicle is used as the drive means for conveying the water in the circuit.
  • the media are preferably introduced into the collecting container with a lid in such a way that the media moves tangentially to the wall.
  • the conveying air coming to the intake of the water jet pump is in turn discharged through an opening in the cover of the collecting container, which valve has, and the valve can be actuated by a float in the collecting container in such a way that the valve establishes a connection to the ambient air before the sucked-in media open the outlet for reach the conveying air.
  • the connection to the ambient air prevents the solid and / or liquid media containing the pollutants from being sucked in and the water jet pump only draws in ambient air.
  • the container lid of the collecting container is thus designed as a cyclone attachment.
  • the water jet pump is designed such that a negative pressure of preferably at least 0.1 bar is generated, provided that the centrifugal pump arranged in the water circuit has an operating pressure of preferably 8 bar to has approximately preferably 12 bar.
  • a standard capacity of 200 liters with a domed lid is preferably used for the water reservoir through which the connecting piece for the water supply to the water supply or water return from the water jet pump are guided.
  • the lid surface has openings for the escape of air.
  • the pressure water coming from the water jet pump in the lid area is introduced approximately horizontally outside the openings into a water box which is provided on the bottom with openings through which the Pressurized water and the conveying air get into the lower area of the tank.
  • the connecting piece for the water supply has a suction pipe that extends into the floor area. In this area, the returned water has calmed down and shows only a small amount of air.
  • the valve in the lid opening of the collecting container has an upper housing part arranged on the suction side of the water jet pump and an opening lower housing part in which a hollow body movable by the float is slidably arranged.
  • the float is lifted and the hollow body is moved.
  • a connection is made between the suction side of the water jet pump and the openings in the lower housing part. This prevents further suction of the liquid and / or solid media containing the pollutants.
  • the hollow body is cylindrical in shape and has outwardly projecting collars at its ends, the lower collar being able to be subjected to the external pressure via the openings in the lower housing part and having a larger area has as the upper collar acted on by the negative pressure.
  • liquid media can be sucked in via a skimmer with a rectangular outline, from which two opposite sides are formed as buoyancy bodies, which in turn are connected to one another in such a way that the media get into the space and one Flood holes in the first plate between the floats of the skimmer.
  • the suction pipe which is preferably arranged to be adjustable, is connected to the skimmer in such a way that the pollutants can be sucked in from the liquid surface through the holes in the first plate, by a second one parallel to the first plate closed plate is arranged as the bottom of the skimmer.
  • FIG. 1 and 2 each schematically show a device for removing solid and / or liquid media containing pollutants, in which a fire engine 10 or 12 is used.
  • the fire truck 10 of FIG. 1 has its own water tank 14.
  • To the tank filler neck 16 for the water supply is preferably connected via an unspecified intermediate piece of the outlet channel of a water jet pump 18.
  • the motive water inlet of the water jet pump is connected via a pressure hose 20 to a fire pump 22 designed as a centrifugal pump, the inlet opening of which is connected to the water tank 14. If the fire pump 22 is now put into operation, water from the tank 14 is pressed by the pump 22, the pressure hose 20 by the water jet pump 18, in order to in turn get into the tank via the filler neck 16.
  • a negative pressure of approximately 0.1 bar is generated at the suction nozzle of the water jet pump 18. This negative pressure is used in order to be able to suck in the media to be removed via a nozzle 30 via a vacuum hose 26 or suction hose 28.
  • a collecting container 32 is installed between the vacuum hose 26 and the suction hose 28.
  • the collection container 32 is preferably in the form of a standard barrel which has a support ring 34 in order to prevent implosion of the collection container 32 when the media is sucked in.
  • the support ring 34 preferably consists of a T-profile which is adapted to the barrel 32 and has a web lying outwards.
  • the ring 34 is divided into two equal halves and is held together by a hinge and a latch. To prevent the barrel from slipping, a rubber strap is attached to the ring.
  • the support ring 34 prevents the barrel 32 from being deformed.
  • the collecting container 32 is closed by a lid 36, which represents a cyclone lid. Furthermore, a ventilation valve 38 is located in the cover.
  • both the cyclone cover 36 and the ventilation valve 38 will be described in connection with FIGS. 3 'and 4.
  • the suction hose 28 In order to prevent the suction hose 28 from being electrostatically charged, it is at ground potential. This ensures that explosive pollutants or media can also be sucked in with the device according to the invention.
  • FIG. 2 shows a device according to the invention, in which a tank 40 of the fire truck 12 does not serve for a water supply, but a barrel 40 arranged outside the fire truck 12 fulfills this task. Otherwise, the same elements as in Fig. 1 are used in the embodiment of FIG. 2, so that they are also provided with the same reference numerals.
  • the closed circuit in which the water jet pump 18 is arranged like the fire pump 22, consists of a pressure hose connection 42 between the centrifugal pump 22 and the motive water inlet of the water jet pump 18, the barrel 40 and a water return line 44 between the barrel 40 and the centrifugal pump 22.
  • the pollutants are kept away from the aforementioned closed water cycle by the collecting container 32 described in connection with FIG. 1.
  • the detailed structure of the barrel 40 for the water supply of the closed water cycle is described in connection with FIGS. 5 and 6.
  • the collecting container 32 of FIGS. 1 and 2 is shown enlarged.
  • This preferably consists of a standard barrel which is open on one side and which has the support ring 34 for reinforcement.
  • the lid 36 of the collecting container 32 is designed as a cyclone lid. This means that the media containing the pollutants, which are sucked in via the suction line 28, are introduced tangentially into the cover area via an intake port 46.
  • the conveyed air sucked in to the water jet pump 18 is removed from the collecting container 32 via a ventilation valve 38 arranged on the cover 36.
  • the operation of the ventilation valve 38 is related with the Fig. 4 described in more detail. 3 shows a float 50 which actuates the ventilation valve 38.
  • a wall 52 is located between the float 50 and the tangential introduction of the medium containing the pollutants, in order to avoid direct contact of liquids with the float.
  • sealing rings are provided in the edge region of the lid 36.
  • the ventilation valve 38 consists of a valve housing, which in turn is composed of a lower housing part 54 and an upper housing part 58.
  • a hollow piston 60 serves as the valve body, which is lifted by the float 50 when the maximum fill level in the container 32 is reached, as a result of which openings 62 in the housing establish a connection between the outside air and the inside of the valve, so that the media to be removed from a surface are sucked in further the immediate equalization of pressure does not occur. This ensures that no pollutants can get into the closed circuit described above.
  • the hollow piston 60 closes the opening 62. Staying in this position is ensured by the inventive design of the hollow piston 60.
  • the hollow piston 60 namely has a cylindrical shape with the ends projecting outward at the ends.
  • the free area of the lower collar is larger than the area of the upper collar.
  • the lower collar surface is now acted upon by the atmospheric pressure passing through the opening 62, the upper collar, however, by the negative pressure prevailing in the device according to the invention.
  • the external pressure on the lower collar causes a sealing seal between the hollow piston 62 and the seals 64 and 66 present in the collar areas.
  • the suction process is only interrupted when the float 50 lifts the hollow piston 60 in such a way via a linkage (not shown). that there is a connection between the outside air through the opening 62 to the interior of the ventilation valve.
  • FIG. 5 and 6 show sections of the container 40 in FIG. 2, which serves as a water reservoir for the closed water cycle.
  • the container 40 is preferably also a standard barrel which is closed by a domed cover 68. Connection pieces 70 and 72 are guided through the cover 68, which on the one hand remove the propellant water and on the other hand take up the pressurized water flowing back from the water jet pump 18.
  • the pressurized water is introduced almost horizontally in the lid area.
  • the propellant water is removed from the container 40 via a nozzle 74 reaching into the bottom area.
  • holes 78 are provided in the lid area for ventilation of the container.
  • the pressurized water connection itself opens into a water box 81, which is arranged below the cover 68 outside the openings 78 and is provided on the bottom with drift steps 76. Through this, the pressurized water mixed with the conveying air reaches the lower region of the container 40. In the lid region below the openings 78 outside the water box 81, a splash panel 79 is further provided to prevent water from escaping through the ventilation holes 78. To prevent water from escaping from the container, there are sealing rings between the edge of the container and the lid and one from the lid. collar 30 projecting into the interior is provided.
  • FIG. 7 shows a skimmer which, instead of the nozzle 30 in FIGS. 1 and 2, can preferably be used in liquids for sucking in the media containing the pollutants.
  • the skimmer 82 has a preferably rectangular outline.
  • two buoyancy bodies 84 and 86 are provided, which are arranged parallel to one another.
  • the floating buoyancy bodies 84 and 86 are connected by webs 88 and 90 in such a way that liquid can get between the buoyancy bodies 84 and 86.
  • a plate 94 provided with holes 92.
  • the buoyancy of the skimmer 82 is selected such that the skimmer can be immersed in a liquid to be freed of pollutants, so that the plate 92 provided with holes 94 comes to lie somewhat below the surface of the liquid. This distance is designated by x in FIG. 7. Experiments have shown that this distance should be approximately 1 cm.
  • an intake pipe 96 is preferably connected centrally to the plate 94 in such a way that the pollutants coming through the holes 92 from the surface into the intake pipe 96 to be received in a collecting container 32 will.
  • the plates 94 and 98 show a nozzle effect.
  • the intake pipe 96 is preferably arranged to be adjustable to be able to clean almost all areas of an arbitrarily limited liquid surface. Different positions of the intake pipe 96 are shown in dashed lines.
  • the device according to the invention With the help of the device according to the invention, it is possible for the first time to use simple means without additional energy sources - apart from the existing units of a fire-fighting vehicle - to remove pollutants present in the media, in particular to suck in liquids which have height differences from the suction unit in the form of a water jet pump have almost up to 10 m.
  • the device according to the invention is quickly ready for use and can even be used in inaccessible places due to the easy overcoming of level differences insofar as there are access routes for fire trucks in the areas to be cleaned of the pollutants.
  • the device according to the invention in fire-fighting boats, for example, when a water surface on which oil is floating is to be cleaned.
  • the water reservoir would be a sea, a lake or a river with the fire boat on it.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Cyclones (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Cleaning In General (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Refuse Collection And Transfer (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Physical Water Treatments (AREA)

Claims (10)

1. Appareil pour une voiture-pompiers (10) à enlever des matières solides et/ou liquides contenant des substances nuisibles, en utilisant la pompe d'incendie (22) disponible à la voiture (10), à la suite de cette pompe d'incendie (22) une pompe par jet d'eau (18) est arrangée, par laquelle l'eau prise d'une soupape d'eau (14) peut être ramenee à celle-ci, où par le vide se produisant au bout d'aspiration de la pompe par jet d'eau (18) les matières peuvent être aspirées via une conduite d'aspiration (26, 28), caractérisé en ce que comme appareillage complémentaire on a prévu la pompe par jet d'eau (18) ainsi qu'un collecteur (32) avec un couvercle à cyclone (36) à raccorder dans la conduite d'aspiration (26, 28) pour préserver la soupape d'eau (14) de matières, dans cette collecteur (32) une communication à l'air extérieur peut être établie automatiquement avant que les matières arrivent à l'ouverture de sortie pour l'air primaire.
2. Appareil selon 1, caractérisé en ce que la pompe d'incendie (22) est une pompe centrifugue travaillant à une pression de service préférablement de plus de 8 bars à 12 bars de préférence, pour la génération d'une pression de 0,1 bar environ au bout d'aspiration de la pompe par jet d'eau (18).
3. Appareil selon 1, caractérisé en ce qu'une soupape est prévue pour établir automatiquement la communication à l'air extérieur et pour supprimer le vide dans le réservoir (14) quand une hauteur fixée de remplissage est atteinte, cette soupape pouvant être commandée par un flotteur (50) dans le collecteur (32).
4. Appareil selon 1 à 3, caractérisé en ce que la réservoir (14) pour la soupape d'eau de la circulation d'eau (14, 16, 18, 20, 22) est le standard réservoir d'eau à éteindre l'incendie (14) étant pourvu des ouvertures de ventilation, de la voiture-pompiers (10).
5. Appareil selon 1 à 3, caractérisé en ce que le réservoir est indépendant de la voiture-pompiers est préférablement est un tonneau standardisé (40).
6. Appareil selon 5, caractérisé en ce que dans la zone de dôme du réservoir (40) pour loger la soupape d'eau, on a prévu des ajutoirs (70, 72) pour l'eau motrice ou plutôt l'eau sous pression de la pompe par jet d'eau (18), ainsi que des ouvertures (78) pour l'échappement de l'air.
7. Appareil selon 6, caractérisé en ce que l'eau sous pression sortant de la pompe par jet d'eau, dans la zone de dôme, à peu près horizontalement à l'extérieur des ouvertures (78), peut être amenée dans une caisse à eau (81) étant pourvue des ouvertures (76) à son fond par lesquelles l'eau sous pression et l'air primaire arrivent à la zone inférieure du réservoir (40).
8. Appareil selon 6, caractérisé en ce que l'ajutoir (70) pour l'eau motrice de la pompe par jet d'eau (18) est une tubulure d'aspiration pénétrant jusqu'à la zone de fond du tonneau (40).
. 9. Appareil selon 1 et 2, caractérisé en ce que la soupape (38) est constituée par une partie supérieure de corps (58) arrangée vers le bout d'aspiration de la pompe par jet d'eau (18) et par une partie inférieure de corps (54) ayant des ouvertures (62), dans lesquelles un corps creux (60) est mobilement disposé à mettre en mouvement par le flotteur (50), où par le soulèvement du corps creux (60) une communcation est établie entre les ouvertures (62) et le bout d'aspiration de la pompe par jet d'eau (18).
10. Appareil selon 8, caractérisé en ce que le corps creux (60) est en forme de cylindre ayant des collets se projetant à l'extérieur à ses extrémités, où le collet inférieur peut être alimenté avec la pression extérieure via les ouvertures (62) dans la partie inférieure du corps (60) et présente une plus grande surface que le collet supérieur à alimenter par le vide, et en ce que la surface extérieure du collet inférieur et la surface intérieure du collet supérieur, ou au moins une partie de cela, sont placées sur garnitures (64, 66) quand la soupape (38) est fermée à l'atmosphère.
EP78101804A 1977-12-24 1978-12-21 Dispositif d'évacuation de liquides ou solides contenant des produits nocifs Expired EP0002810B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2758038A DE2758038B2 (de) 1977-12-24 1977-12-24 Absaugvorrichtung
DE2758038 1977-12-24

Publications (2)

Publication Number Publication Date
EP0002810A1 EP0002810A1 (fr) 1979-07-11
EP0002810B1 true EP0002810B1 (fr) 1982-03-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP78101804A Expired EP0002810B1 (fr) 1977-12-24 1978-12-21 Dispositif d'évacuation de liquides ou solides contenant des produits nocifs

Country Status (17)

Country Link
US (1) US4194978A (fr)
EP (1) EP0002810B1 (fr)
JP (1) JPS5514985A (fr)
AR (1) AR220547A1 (fr)
AT (1) AT383276B (fr)
AU (1) AU524342B2 (fr)
BR (1) BR7808473A (fr)
CA (1) CA1111620A (fr)
DD (1) DD140844A5 (fr)
DE (2) DE2758038B2 (fr)
DK (1) DK151106C (fr)
ES (1) ES476290A1 (fr)
FI (1) FI64680C (fr)
GB (1) GB2012364B (fr)
NO (1) NO158757C (fr)
SU (1) SU1190998A3 (fr)
ZA (1) ZA787201B (fr)

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Also Published As

Publication number Publication date
FI64680C (fi) 1983-12-12
DE2758038C3 (fr) 1987-01-22
BR7808473A (pt) 1979-08-21
DE2758038B2 (de) 1980-11-27
CA1111620A (fr) 1981-11-03
GB2012364A (en) 1979-07-25
NO158757B (no) 1988-07-18
NO784346L (no) 1979-06-26
ES476290A1 (es) 1979-11-01
DK580078A (da) 1979-06-25
ZA787201B (en) 1979-12-27
FI783918A (fi) 1979-06-25
JPS5514985A (en) 1980-02-01
DE2758038A1 (de) 1979-06-28
EP0002810A1 (fr) 1979-07-11
DE2861656D1 (en) 1982-04-01
NO158757C (no) 1988-10-26
DK151106C (da) 1988-05-16
ATA905378A (de) 1986-11-15
DD140844A5 (de) 1980-04-02
AT383276B (de) 1987-06-10
AR220547A1 (es) 1980-11-14
SU1190998A3 (ru) 1985-11-07
US4194978A (en) 1980-03-25
AU4315779A (en) 1979-06-28
DK151106B (da) 1987-11-02
FI64680B (fi) 1983-08-31
GB2012364B (en) 1982-06-16
AU524342B2 (en) 1982-09-09

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