DK151594B - DEVICE FOR CONTROL OF THE DEFINITION OF TIGHT LOADED CABLES - Google Patents
DEVICE FOR CONTROL OF THE DEFINITION OF TIGHT LOADED CABLES Download PDFInfo
- Publication number
- DK151594B DK151594B DK534378AA DK534378A DK151594B DK 151594 B DK151594 B DK 151594B DK 534378A A DK534378A A DK 534378AA DK 534378 A DK534378 A DK 534378A DK 151594 B DK151594 B DK 151594B
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- DK
- Denmark
- Prior art keywords
- cable
- trumpet
- channel
- stack
- cables
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
- F16G11/04—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with wedging action, e.g. friction clamps
- F16G11/044—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with wedging action, e.g. friction clamps friction clamps deforming the cable, wire, rope or cord
- F16G11/048—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with wedging action, e.g. friction clamps friction clamps deforming the cable, wire, rope or cord by moving a surface into the cable
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Electrophotography Configuration And Component (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Description
i 151594in 151594
Den foreliggende opfindelse angår en indretning til styring af afbøjningen af trækbelastede kabler, hvor disse træder hovedsagelig vinkelret ud af en blok, hvilken indretning har en" kablet omgivende kanal, 5 der udvider sig trompetformet, og mod hvis væg kablet får anlæg i afhængighed af afbøjningen.The present invention relates to a device for controlling the deflection of tensile stressed cables, the latter projecting substantially perpendicularly from a block, said device having a "wired surrounding duct which extends trumpet-shaped, and against which the cable is subjected to dependence on the deflection. .
Det er kendt, at visse kabler, såsom barduner, fortøjningstrosser og hænge- eller tovbanekabler, er udsat for betydelige trækkræfter med store vinkeΙ-ΙΟ variationer i rummet, navnlig på grund af den fastholdte konstruktions bevægelighed eller som følge af indvirkningen fra vind, søgang eller strømninger. Kablerne kan være sædvanlige slåede tove eller kan være knipper af retliniede og parallelle tråde eller tråd-15 parter, der er omsluttet af et hylster eller en skede, eksempelvis som kendt fra forspændingsteknikken.It is known that certain cables, such as cables, mooring cables and hanging or cable ropes, are subjected to considerable traction with large anglesΙ-ΙΟ variations in space, in particular due to the movement of the restrained structure or due to the effects of wind, sea or water. currents. The cables may be conventional corded ropes, or may be clips of rectilinear and parallel wires or threads enclosed by a sheath or sheath, for example as known from the biasing technique.
Gennem opfindelsen tilsigtes det for sådanne kabler at tillade væsentlige retningsændringer uden risiko for, at bøjningsbelastningerne overskrider 20 træthedsstyrken. Når indretningen ifølge opfindelsen udføres som en udskiftelig enhed i forbindelse med et kabelforankringshoved, muliggøres endvidere udskiftning af kablet, dersom dette eksempelvis skal ændres af en eller anden grund, og placering af den 25 nye forankring på det samme sted under genanvendelse af hele den oprindelige forankring eller dele af denne .Throughout the invention, it is intended for such cables to permit significant directional changes without the risk of bending loads exceeding the fatigue strength. Furthermore, when the device according to the invention is designed as a replaceable unit in connection with a cable anchorage head, it is possible to replace the cable, if, for example, this has to be changed for some reason and placement of the new anchorage at the same place using the whole of the original anchorage or parts of this.
Til sikring af en styret afbøjning af kabler, hvor disse udgår fra en forankring, er det kendt at 30 lade kablet gå gennem en kanal, der udvider sig trompetformet udad, og mellem ydersiden af kablet og indersiden af trompeten at benytte et fast smøremiddel, der på i og for sig kendt måde skal skåne trådenes yderflader ved ændringer i spændingen i kablet, der 35 trykkes imod styrefladen.In order to ensure a controlled deflection of cables where these are based on an anchorage, it is known to allow the cable to pass through a channel which extends trumpet-shaped outwardly and to use a solid lubricant between the outside of the cable and the inside of the trumpet. in a manner known per se, the outer surfaces of the wires must be protected by changes in the voltage in the cable pressed against the guide surface.
2 1515942 151594
Navnlig hvor det gælder et kabel i form af et knippe af parallelle tråde, er en sådan løsning ikke tilfredsstillende, eftersom den ikke hindrer deformationer af kabeltværsnittet, hvorved der som følge 5 af påvirkninger mellem enkelttrådene kan opstå ekstra, lokale påvirkninger, som i væsentlig grad reducerer træthedsstyrken.Particularly in the case of a cable in the form of a bundle of parallel wires, such a solution is not satisfactory as it does not prevent deformations of the cable cross-section, whereby, as a result of 5 interferences between the individual wires, additional local influences can arise which substantially reduces fatigue strength.
Gennem opfindelsen fjernes denne ulempe.This disadvantage is removed by the invention.
Ifølge opfindelsen er kablet, der ligger i ka-10 nalen, uden væsentligt spillerum ført gennem huller i en stabel stive, cirkulære ensdannede og indbyrdes vippelige elementer, hvis tykkelse er lille i forhold til deres diameter, og hvis yderkanter ved kablets varierende afbøjning kommer til anlæg mod den trompet-15 formede kanals faste væg, så at elementstabelen får en jævn krumning svarende til kanalvæggens krumning i* aksialsnit.According to the invention, the cable lying in the channel, without substantial clearance, is passed through holes in a stack of rigid, circular uniform and reciprocally inclined elements, the thickness of which is small in proportion to their diameter and whose outer edges at the varying deflection of the cable reach abutment against the solid wall of the trumpet-shaped channel so that the element stack will have a smooth curvature corresponding to the curvature of the channel wall in * axial section.
En sådan elementstabel har en vis fleksibilitet over længden, så at den kan indstille sig efter krum-20 ningen af den trompetformede kanals væg og derved kan fordele de fra kablets bøjning eller krumning hidrørende tværkræfter over denne væg, samtidig med at elementstabelen fastholder kablets tråde i deres tværsnitsform.Such an element stack has some flexibility over its length so that it can adjust to the curvature of the trumpet-shaped channel wall and thereby distribute the transverse forces resulting from the bending or curvature of the cable over that wall, while the element stack retains the wires of the cable. their cross-sectional shape.
25 I en hensigtsmæssig udførelsesform for indret ningen ifølge opfindelsen udgøres de stive elementer af plane, tynde ringe, mellem hvilke der er indskudt ringformede lag af fast, elastisk elastomermateriale.In a convenient embodiment of the device according to the invention, the rigid elements are made of planar, thin rings, between which are formed annular layers of solid, elastic elastomeric material.
De plane ringes mod hinanden vendende flader kan i 30 bunden have afrundede render til optagelse af det ringformede elastomermateriale med tilsvarende udformning. Hele stabelen danner derved en art tværstift hylster omkring kablet med den fordel, at indretningen er egnet til kabler af enhver art uanset 35 deres opbygning.The planar rings facing each other may have rounded bottoms at the bottom to receive the annular elastomeric material of similar configuration. The entire stack thus forms a kind of cross-stitch casing around the cable with the advantage that the device is suitable for cables of all kinds regardless of their construction.
3 151594 I en anden udførelsesform er de stive elementer skiver med et flertal huller, der ligger på linie med hinanden i stabelen og danner adskilte passager for kablets tråde. Disse skiver kan være bikonvekse til an-5 læg. mod hinanden. Endvidere kan en muffe til samling af..kablets tråde være anbragt ved yderenden af stabelen af skiver og støtte mod denne yderende. Kablet kan have et fastsiddende dæksel for den vide ende af den trompetformede kanal til afspærring af dennes 10 munding i enhver stilling af kablet.In another embodiment, the rigid members are discs having a plurality of holes aligned with one another in the stack and forming separate passages for the wires of the cable. These slices may be biconvex for plants. against each other. Further, a sleeve for assembling the wires of the cable may be provided at the outer end of the stack of washers and support against this outer end. The cable may have a fixed cover for the wide end of the trumpet-shaped channel for blocking its orifice at any position of the cable.
Uanset om indretningen anvendes på land eller til søs, kan såvel den kablet omgivende elementstabel som den trompetformede kanals væg hensigtsmæssigt være beklædt med et fast lag med smøreegenskaber, såsom 15 "Teflon", og kanalen kan være fyldt med en plastisk masse, der tillader sideforskydning af kablet men hindrer fremmedlegemer i at trænge ind i kanalen.Regardless of whether the device is used on land or at sea, both the cable surrounding element table and the wall of the trumpet-shaped channel may conveniently be lined with a fixed layer of lubricating properties, such as "Teflon", and the channel may be filled with a plastic mass permitting lateral displacement of the cable but prevents foreign bodies from entering the channel.
Denne kan være udformet i selve forankrings-blokken, men kan også være dannet i et til denne 20 fastgjort legeme.This may be formed in the anchor block itself, but may also be formed in a body attached thereto.
Opfindelsen er i det følgende nærmere forklaret under henvisning til tegningen, på hvilken fig. 1 viser et aksialsnit i en første udførelsesform for styreindretningen ifølge opfindelsen, 25 fig. 2 en detalje fra fig. 1 i større målestoksforhold, fig. 3 et aksialsnit i en variant af indretningen, fig. 4 et til fig. 1 svarende snit i en an-30 den udførelsesform for styreindretningen, fig. 5 et planbillede af en skive hørende til den i fig. 4 viste stabel, fig. 6 et snit efter linien VI-VI i fig. 5, og fig. 7 en modificeret detalje fra udførelses-35 formen i fig. 4, vist i større målestoksforhold.The invention is explained in more detail below with reference to the drawing, in which: FIG. 1 shows an axial section in a first embodiment of the control device according to the invention; FIG. 2 shows a detail of FIG. 1 in larger scale; FIG. 3 shows an axial section in a variant of the device; FIG. 4 is a view of FIG. 1 is a sectional view of another embodiment of the control device; FIG. 5 is a plan view of a disk of the disk shown in FIG. 4; FIG. 6 is a sectional view taken along line VI-VI of FIG. 5, and FIG. 7 is a modified detail of the embodiment of FIG. 4, shown in larger scale.
4 1515944 151594
Et kabel #, fig. 1 og 2, træder ud af en naturlig eller kunstig blok B vinkelret på dennes overflade og fortsætter gennem et legeme 1 med en kanal 2, der udvider sig trompetformet, og hvis eksem-5 pelvis cirkulære tværsnit kan være afpasset efter den frihedsgrad, som kablet A skal have uden for blokken B.A cable #, fig. 1 and 2, protrudes from a natural or artificial block B perpendicular to its surface and proceeds through a body 1 with a channel 2 which extends trumpet-shaped and whose, for example, circular cross-section may be adapted to the degree of freedom of the cable A must have outside block B.
Den i kanalen 2 liggende del af kablet A går uden spillerum gennem en række eller stabel af 10 flade og stive ringe 3, eksempelvis af stål, der er adskilt fra hinanden af elastiske ringe 4 af gummi eller en elastomer. Ringene 3 og 4 danner tilsammen et bevægeligt eller fleksibelt hylster omkring kablet 4.The portion of cable A lying in channel 2 passes without clearance through a row or stack of 10 flat and rigid rings 3, for example of steel separated from each other by elastic rings 4 of rubber or an elastomer. The rings 3 and 4 together form a moving or flexible casing around the cable 4.
15 Dette hylster har en blød yderbeklædning 5, fig. 2, der giver et elastisk anlæg mod væggen i det trompetformede legeme 1, som har en lignende, fast belægning 5. Såvel denne som beklædningen 5 har fortrinsvis smørende egenskaber. Til. begrænsning af 20 forskydningen, af kablet A’s tråde i hylsteret kan det fri rum mellem trådene og hylsterets inderside være fyldt med et blødt eller pastaagtigt stof 7, såsom smørefedt.15 This sleeve has a soft outer covering 5, fig. 2, which provides an elastic abutment against the wall of the trumpet-shaped body 1 which has a similar, solid coating 5. Both this and the cladding 5 preferably have lubricating properties. To. limiting the displacement, of the cable A's threads in the sheath, the free space between the threads and the inside of the sheath may be filled with a soft or paste-like substance 7, such as grease.
Materialerne i ringene 4, beklædningerne 5 og 6 og fyldningen 7 kan vælges med en sådan tyk-25 kelse og kvalitet,at der tages hensyn til størrelsen af reaktionerne, som afhænger af den trompetformede kanalvægs krumning og trækket i kablet A, hvis bevægelsesområde i den viste udførelsesform er markeret ved de to yderstillinger A^ og A^.The materials of the rings 4, the linings 5 and 6 and the filling 7 can be selected with such thickness and quality to take into account the magnitude of the reactions which depend on the curvature of the trumpet-shaped channel wall and the tension in the cable A whose range of motion in the The embodiment shown is marked at the two outer positions A ^ and A ^.
30 Rummet 12, der tillader denne variation i kablet A's retning, kan være fyldt med et passende materiale, eksempelvis fedt eller et bituminøst stof med en viskositet, som er valgt under hensyn til den hastighed, hvormed kablet A kan ændre retning, så 35 at denne retningsændring ikke bevirker hulrum i materialet.The space 12 which allows this variation in the direction of the cable A may be filled with a suitable material, for example grease or a bituminous substance having a viscosity selected according to the rate at which the cable A can change direction so that this change of direction does not cause voids in the material.
5 1515945 151594
Rummet 12 kan yderligere beskyttes mod indtrængende fremmedlegemer enten ved hjælp af en blød manchet 20 (fig. 4) eller ved hjælp af et stift dæksel 13, som sidder fast på kablet, hvor dette 5 træder ud af rummet 12, og er tilstrækkelig stort til i enhver stilling at dække kanalen 2's vide munding.The compartment 12 can be further protected against penetrating foreign bodies either by means of a soft cuff 20 (Fig. 4) or by a rigid cover 13, which is attached to the cable where this 5 exits from the compartment 12, and is sufficiently large to in any position to cover the wide mouth of channel 2.
Som vist i fig. 3 kan de elastiske mellemringe 4"s volumen forøges (med henblik på at lette de sti-10 ve ringe 3's vinkelforskydning) uden forøgelse af afstanden mellem de stive ringe, nemlig ved at lade disse ringe have hule anlægsflader 14 og at støbe ringene 4 med en tilsvarende facon.As shown in FIG. 3, the volume of the elastic intermediate rings 4 "can be increased (to facilitate the angular displacement of the rigid rings 3) without increasing the distance between the rigid rings, namely by allowing these rings to have hollow contact surfaces 14 and molding the rings 4 with a similar shape.
Det skal endvidere påpeges, at der i stedet 15 for beklædningerne 5 og 7 kan anvendes ringformede belægninger 15 og 16 på yder- og inderkanterne af de stive ringe 3. De elastiske ringe 4 bør da være lige så store i diameter som de belagte, stive ringe.Furthermore, it should be pointed out that instead of the covers 5 and 7, annular coatings 15 and 16 can be used on the outer and inner edges of the rigid rings 3. The elastic rings 4 should then be as large in diameter as the coated, rigid rings. call.
20 Ved den i fig. 4-7 viste udførelsesform træder kablet A's tråde a ud af blokken B med en indbyrdes afstand og parallelt med hinanden. Hver af trådene går gennem en kanal, der dannes af en række ens huller 17 i de i en stabel indgående skiver 18.20 In the embodiment of FIG. 4-7, the cables A of the cable A come out of the block B at a distance from one another and parallel to each other. Each of the threads passes through a channel formed by a series of similar holes 17 in the discs 18 contained in a stack.
25 Som det fremgår af fig. 4-6, kan disse skiver have form som bikonvekse linser, eller de kan være plane som vist i fig. 7 og være indbyrdes adskilt af elastomere skiver 19.25 As can be seen from FIG. 4-6, these slices may be in the form of biconvex lenses, or they may be planar as shown in FIG. 7 and be spaced apart by elastomeric discs 19.
De bikonvekse skivers krumning eller hvælving 30 kan være valgt således, at den netop tillader den ønskede sidebøjning af kablet i den trompetformede kanal. Den kan dog også være større, dersom dette er ønskeligt eller nødvendigt af hensyn til monteringen af kablet.The curvature or vault 30 of the biconvex discs may be selected to permit precisely the desired lateral bending of the cable in the trumpet-shaped channel. However, it may also be larger if this is desirable or necessary for mounting of the cable.
35 Skiverne 18 kan bestå af stål, men de kan også være fremstillet af syntetisk materiale med en 6 151594 fiber- eller trådamering, f.eks. af stål, glas eller kulstof. Til forøgelse af holdbarheden kan skiverne have en udvendig ring 22. Hullerne 17 i skiverne kan på kendt måde have udvidede eller afrundede mun-5 dinger 21 til undgåelse af en beskadigelse af trådene, dersom skiverne ellers ville medføre risiko herfor. Som i den foran beskrevne udførelsesform er skivestabelen omgivet af et hylster eller skede 24, der fordeler trykket mellem skiverne og den trompet-10 formede væg.The discs 18 may be made of steel, but they may also be made of synthetic material with a fiber or wire amalgam, e.g. of steel, glass or carbon. To increase the durability, the discs may have an outer ring 22. The holes 17 in the discs may in known manner have extended or rounded openings 21 to avoid damage to the threads, if the discs would otherwise pose a risk. As in the embodiment described above, the disc stack is surrounded by a sleeve or sheath 24 which distributes the pressure between the discs and the trumpet-shaped wall.
Disse skivers sekundære funktion som afstandsholdere for trådene er navnlig af betydning, når bøjningen af kablet foregår tæt ved forankringen, nemlig til bibeholdelse af trådenes parallellitet, som er 15 fastlagt ved forankringen. Uden for dette område kan trådene hensigtsmæssigt føres tættere sammen, så at den fritliggende del af kablet bliver passende fast.The secondary function of these discs as spacers for the wires is particularly important when the bending of the cable takes place close to the anchor, namely to maintain the parallelism of the wires, which is determined at the anchor. Outside of this range, the wires may conveniently be brought closer together so that the exposed portion of the cable becomes suitably fixed.
Dette kan sikres ved hjælp af en afbøjningsring 23, fig. 4, der eventuelt kan støtte på stabelen af ski-20 ver og derved kan holde denne på plads, navnlig dersom kablet ikke har en sådan retning, at skiverne holdes på plads af tyngdekraften. Som tidligere angivet kan en skede 24 samvirke med beklædningen 6 på den trompetformede kanals væg ved overføringen af de si-25 derettede kræfter fra kablet til denne væg.This can be ensured by means of a deflection ring 23, fig. 4, which may possibly support the stack of discs and thereby be able to hold it in place, especially if the cable does not have such a direction that the discs are held in place by gravity. As previously stated, a sheath 24 may cooperate with the lining 6 of the wall of the trumpet-shaped channel in transferring the lateral forces from the cable to this wall.
Når der er tale om en kabelafbøjning i afstand fra forankringen, anvendes der fortrinsvis en indretning af den art, der er vist i fig. 1-3, som bibeholder kablets kompakte struktur.In the case of a cable deflection away from the anchorage, a device of the kind shown in FIG. 1-3, which maintains the compact structure of the cable.
30 Den trompetformede kanal 2 kan også være ud formet direkte i blokken B. Navnlig dersom blokken udgør en egentlig forankringsklods, anvendes der hensigtsmæssigt et separat legeme 1, der kan bestå af metal eller beton. Det kan således med fordel være ud-35 formet som en betonblok, fig. 1, med en omsluttende pladeforstærkning 11, som kan bære organer 10 tilThe trumpet-shaped channel 2 may also be formed directly in block B. In particular, if the block constitutes an actual anchoring block, a separate body 1 may consist of metal or concrete. Thus, it may advantageously be designed as a concrete block. 1, with an enclosing plate reinforcement 11 capable of supporting means 10
Claims (7)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7739871 | 1977-01-07 | ||
| FR7739871A FR2413588A1 (en) | 1977-12-30 | 1977-12-30 | Guiding the deflection of stretched cables - using stack of relatively movable rigid, circular members which eliminate distortion of cable against support wall |
| FR7739870 | 1977-12-30 | ||
| FR7739870A FR2413587A1 (en) | 1977-12-30 | 1977-12-30 | DEVICE ENSURING THE GUIDANCE OF THE DEVIATION OF STRETCHED CABLES |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK534378A DK534378A (en) | 1979-07-01 |
| DK151594B true DK151594B (en) | 1987-12-14 |
| DK151594C DK151594C (en) | 1988-05-30 |
Family
ID=26220378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK534378A DK151594C (en) | 1977-12-30 | 1978-11-29 | DEVICE FOR CONTROL OF THE DEFINITION OF TIGHT LOADED CABLES |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5854202B2 (en) |
| AU (1) | AU4300578A (en) |
| BR (1) | BR7808608A (en) |
| DK (1) | DK151594C (en) |
| GB (1) | GB2011970B (en) |
| MX (1) | MX150599A (en) |
| NO (1) | NO150575C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2664176C (en) * | 2006-10-04 | 2015-06-09 | Nunc Aut Nunquan Holding | Anchor point |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1520075A (en) * | 1966-04-20 | 1968-04-05 | Stressed Concrete Design Ltd | Improvements to prestressed concrete constructions |
| NO121176B (en) * | 1966-03-31 | 1971-01-25 | S T U P Procedes Freyssinet | |
| NO138966B (en) * | 1972-01-21 | 1978-09-04 | Antonio Brandestini | WIRE CABLE ANCHORAGE FOR HIGH DYNAMIC STRESSES |
| NO146918B (en) * | 1976-02-09 | 1982-09-20 | Bureau Bbr Ltd | ANCHORING A STEEL WIRE OR SIMILAR |
-
1978
- 1978-11-29 DK DK534378A patent/DK151594C/en not_active IP Right Cessation
- 1978-12-08 GB GB7847739A patent/GB2011970B/en not_active Expired
- 1978-12-28 JP JP53164368A patent/JPS5854202B2/en not_active Expired
- 1978-12-28 BR BR7808608A patent/BR7808608A/en unknown
- 1978-12-29 NO NO784440A patent/NO150575C/en unknown
- 1978-12-29 AU AU43005/78A patent/AU4300578A/en active Pending
-
1979
- 1979-01-03 MX MX176163A patent/MX150599A/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO121176B (en) * | 1966-03-31 | 1971-01-25 | S T U P Procedes Freyssinet | |
| FR1520075A (en) * | 1966-04-20 | 1968-04-05 | Stressed Concrete Design Ltd | Improvements to prestressed concrete constructions |
| NO138966B (en) * | 1972-01-21 | 1978-09-04 | Antonio Brandestini | WIRE CABLE ANCHORAGE FOR HIGH DYNAMIC STRESSES |
| NO146918B (en) * | 1976-02-09 | 1982-09-20 | Bureau Bbr Ltd | ANCHORING A STEEL WIRE OR SIMILAR |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5854202B2 (en) | 1983-12-03 |
| DK151594C (en) | 1988-05-30 |
| JPS54107139A (en) | 1979-08-22 |
| DK534378A (en) | 1979-07-01 |
| NO150575B (en) | 1984-07-30 |
| GB2011970A (en) | 1979-07-18 |
| GB2011970B (en) | 1982-08-25 |
| NO150575C (en) | 1984-11-07 |
| BR7808608A (en) | 1979-08-28 |
| NO784440L (en) | 1979-07-03 |
| AU4300578A (en) | 1979-07-12 |
| MX150599A (en) | 1984-06-06 |
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| PBP | Patent lapsed |