NO133633B - - Google Patents
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- Publication number
- NO133633B NO133633B NO420272A NO420272A NO133633B NO 133633 B NO133633 B NO 133633B NO 420272 A NO420272 A NO 420272A NO 420272 A NO420272 A NO 420272A NO 133633 B NO133633 B NO 133633B
- Authority
- NO
- Norway
- Prior art keywords
- ribs
- sleeve
- fastening device
- ladder
- designed
- Prior art date
Links
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000011449 brick Substances 0.000 claims description 2
- 238000004873 anchoring Methods 0.000 description 4
- 210000003027 ear inner Anatomy 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/02—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose in one piece with protrusions or ridges on the shaft
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C9/00—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes
- E06C9/02—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes rigidly mounted
- E06C9/04—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes rigidly mounted in the form of climbing irons or the like
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/12—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like
- F16B13/126—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like fastened by inserting an unthreaded element, e.g. pin or nail
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sewage (AREA)
- Ladders (AREA)
- Sealing Devices (AREA)
Description
Denne oppfinnelse vedrører en festeanordning for stigeelementer eller lignende, hvis frie ender er rørformet og som kan forankres i blindhull i en murvegg ved hjelp av hylser som er forsynt med innvendige boringer og hvis ytterflate er forsynt med omkretsribber som er utformet mothakeaktig og skråner mot hylsens innføringsretning. This invention relates to a fastening device for ladder elements or the like, the free ends of which are tubular and which can be anchored in blind holes in a brick wall by means of sleeves which are provided with internal bores and whose outer surface is provided with peripheral ribs which are designed like barbs and slope towards the direction of insertion of the sleeve .
Sådanne stigeelementer, som f.eks. leiderbøyler, stige-bøyler, holdebøyler og lignende, som hensiktsmessig er overtruk-ket med en plast eller med aluminium, benyttes i kanalisasjons-sjakter, vannbasseng, klareanlegg som er utsatt for forskjellige kjemikalier, fuktighet, damp og lignende, og tjener til å gi adgang til det indre av sådanne objekter. Such ladder elements, such as ladder stirrups, ladder stirrups, holding stirrups and the like, which are suitably coated with a plastic or with aluminium, are used in sewer shafts, water basins, treatment facilities which are exposed to various chemicals, moisture, steam and the like, and serve to provide access to the interior of such objects.
Forankring av stigeelementer har man hittil som oftest utført ved innsementering eller innmuring. Det er da nødvendig med temmelig store utsparinger i murverket, således at dette svekkes samtidig som der kan oppstå riss, gjennom hvilke grunn-vannet kan trenge inn, f.eks. i en sjakt. Denne anbringelse og befestigelse av stigeelementer er forbundet med stort material-forbruk og betydelige omkostninger. Videre foreligger der stor fare for oksydasjon og gjennomrusting når stigeelementets ender er murt inn, således at der ofte uventet oppstår brudd i stigeelementet. Også utvekslingen av sådanne forankrede stigeelementer er tidskrevende og kostbar. Up until now, anchoring of ladder elements has most often been carried out by cementing or walling. It is then necessary to have fairly large recesses in the masonry, so that this is weakened at the same time that cracks can occur, through which ground water can penetrate, e.g. in a shaft. This placement and fixing of ladder elements is associated with large material consumption and significant costs. Furthermore, there is a great risk of oxidation and rusting through when the ends of the ladder element are bricked in, so that breaks in the ladder element often occur unexpectedly. The exchange of such anchored ladder elements is also time-consuming and expensive.
Man har derfor allerede foreslått, se sveitsisk p.s. 496 874, å benytte en festeanordning som er utformet som en hylse med på yttersiden anordnede, mothakelignende ringribber. Stigeelementets ende som skal forankres, føres så inn i disse hylser som anordnes i en utsparing i murverket som er dimensjo-nert tilsvarende. De mothakeaktige ringribber legger seg an mot murutsparingens eller hullets innerflate og sikrer et på- One has therefore already proposed, see Swiss p.s. 496 874, to use a fastening device which is designed as a sleeve with barb-like ring ribs arranged on the outside. The end of the ladder element, which is to be anchored, is then inserted into these sleeves which are arranged in a recess in the masonry which is dimensioned accordingly. The barbed ring ribs rest against the inner surface of the wall recess or hole and ensure a
litelig hold for hylsen. little hold for the sleeve.
Da- blindboringer i en mur, i hvilke en hylse av fore-liggende art skal innføres, aldri har den ideelle runding og dertil har eti temmelig ru veggoverflate, har det vist seg_ at der .med de kjente hylser ikke kan oppnåes noen absolutt væsketett forankring av stigeelementet. Det har dertil vist seg at der som følge av enkelte fremspringende steder i boringen, såsom på grunn av særlig harde steinpartikler, kan oppstå så sterke defor-masjoner av ringribbene at vann kan trenge ut. Dessuten kan det forekomme at ringribbene blir skadet på grunn av sådanne frem-spring dannet av steinrester, hvilket også kan bevirke utettheter. Since blind bores in a wall, in which a sleeve of the present type is to be inserted, never have the ideal rounding and in addition have a rather rough wall surface, it has been shown that with the known sleeves no absolutely liquid-tight anchoring can be achieved of the ladder element. It has also been shown that as a result of certain protruding places in the borehole, such as due to particularly hard rock particles, such strong deformations of the ring ribs can occur that water can seep out. In addition, it can happen that the ring ribs are damaged due to such protrusions formed by stone residues, which can also cause leaks.
Hensikten med oppfinnelsen er- å skaffe en forbedret holdeanordning for et stigeelement som i vidtgående grad sikrer en væsketett forankring i murverket, og dette oppnås ifølge oppfinnelsen ved at omkretsribbene er inndelt i skjellaktige avsnitt og bruddstedene mellom tilstøtende omkretsribber er innbyrdes forskutt i omkretsretningen. The purpose of the invention is to provide an improved holding device for a ladder element which largely ensures a liquid-tight anchoring in the masonry, and this is achieved according to the invention by the circumferential ribs being divided into shell-like sections and the breaking points between adjacent circumferential ribs being mutually offset in the circumferential direction.
Ved at omkretsribbene er delt i avsnitt oppnås en Jiedre ttlpasyiiJig av festeanordningan til boringens vegg og der-ved til en bedre tetning. Til dette kommer at de enkelte avsnitt lettere vil "klore seg fast" i boringens vegg enn tilfel-let er ved sammenhengende omkretsribber, således at befestigei-sen blir den best mulige. Eventuelle løse steins tykker i boringen vil finne sin plass i. hylsen og blir ute av stand til å for-årsake utettheter. En beskadigelse av omkretsribbene under inn-føring av hylsen vil praktisk talt være utelukket, da de enkelte avsnitt vil være meget mere elastiske enn sammenhengende omkretsribber . As the circumferential ribs are divided into sections, a Jiedre ttlpasyiiJig of the fastening device to the wall of the bore is achieved and thereby a better seal. In addition to this, the individual sections will more easily "catch themselves" in the wall of the bore than is the case with continuous circumferential ribs, so that the fastening is the best possible. Any chunks of loose rock in the borehole will find their place in the sleeve and will be unable to cause leaks. Damage to the circumferential ribs during insertion of the sleeve will practically be excluded, as the individual sections will be much more elastic than continuous circumferential ribs.
Fortrinnsvis er hylsens overflate dessuten utformet med lengderibber, hvorved de vil bli hindret i å dreie seg i-boringen. Preferably, the sleeve's surface is also designed with longitudinal ribs, whereby they will be prevented from rotating in the bore.
Oppfinnelsen skal forklares nærmere ved et utførelses-eksempel under henvisning til tegningene, hvis fig. 1 viser en del av en sjakt med stigeelementer, fig. 2 viser et aksialsnitt av en festeanordning ifølge oppfinnelsen, fig.. 3 og 4 viser en hylses msntelflate i utfoldet tilstand i to varianter og fig. 5 viser i perspektiv en hylse ifølge oppfinnelsen. The invention shall be explained in more detail by means of an embodiment with reference to the drawings, whose fig. 1 shows part of a shaft with ladder elements, fig. 2 shows an axial section of a fastening device according to the invention, fig. 3 and 4 show the inner surface of a sleeve in the unfolded state in two variants and fig. 5 shows in perspective a sleeve according to the invention.
Med stigeelement menes her en U-formet bøyd bøyle av-stål, lettmetall eller annet passende materiale, videre av enkeltelementer sammensatte eller i ett stykke utførte leidere, tilhørende inn- eller påstigningsmidler, såsom håndtak, verne-rekkverk og lignende. By ladder element here is meant a U-shaped bent hoop made of steel, light metal or other suitable material, further ladders composed of individual elements or made in one piece, associated means of entry or access, such as handles, guardrails and the like.
Fig. 1 viser en delvis montert stigeanordning for å gi adgang til det indre av en kanalisasjonssjakt. Stigeanordningen består av et antall U-formede rørseksjoner 19 som er forsynt med et overtrekk og som er festet over hverandre i sjaktens vegg 1. Fig. 1 shows a partially assembled ladder device for giving access to the interior of a sewer shaft. The ladder device consists of a number of U-shaped pipe sections 19 which are provided with a cover and which are fixed above each other in the wall 1 of the shaft.
Til dette formål er der i. sjaktveggen boret hull 2, hvis diameter er noe mindre enn den største di ameter av de hylser 3 som skal innføres i hullene. En sådan hylse 3 er vist i aksialsnitt på fig. 2. Hylsen består av en hard plast og er utført med en rund eller firkantet boring 4, hvis innerflate er utformet med ring-formede ribber eller -forhøyninger 5 som er avbrutt i omkretsretningen, således at der dannes skjellaktige avsnitt med mellomlig-gende bruddsteder. Også hylsens 3 ytterflate er formet med ringribber 6 som likeledes er brutt for dannelse av sektorformede, skjellaktige avsnitt 7 med bruddsteder 8. Disse avsnitt 7 av ringribbene 6 er ulike store og har en fra sylinderflaten avvi-kende skråflate, hvis helling er rettet mot hylsens 3 innførings-retning P. Innerribbenes 5 overflate er derimot rettet i inn-føringsretningen P. Bruddstedene 8 mellom de enkelte skjellaktige avsnitt er således fordelt at bruddene 8 i tilstøtende ringribber 6 er forskjøvet innbyrdes i omkretsretningen for at der aldri skal finnes to nabobruddsteder som er i flukt med hverandre i aksialretningen. På denne måte oppnås en labyrinttetning som hindrer fuktighet i å sige inn i kanalisasjonssjakten. Videre er hylsen 3 forsynt med lengderibber 18 (fig. 5) som sikrer hylsen mot å dreies i hullet. For this purpose, a hole 2 is drilled in the shaft wall, the diameter of which is somewhat smaller than the largest diameter of the sleeves 3 that are to be inserted into the holes. Such a sleeve 3 is shown in axial section in fig. 2. The sleeve consists of a hard plastic and is made with a round or square bore 4, the inner surface of which is designed with ring-shaped ribs or elevations 5 which are interrupted in the circumferential direction, so that shell-like sections with intermediate break points are formed. The outer surface of the sleeve 3 is also shaped with annular ribs 6 which are likewise broken to form sector-shaped, shell-like sections 7 with fracture points 8. These sections 7 of the annular ribs 6 are of different sizes and have an inclined surface deviating from the cylinder surface, the slope of which is directed towards the sleeve's 3 insertion direction P. The surface of the inner ribs 5, on the other hand, is oriented in the insertion direction P. The fracture sites 8 between the individual shell-like sections are distributed in such a way that the fractures 8 in adjacent annular ribs 6 are offset from each other in the circumferential direction so that there are never two neighboring fracture sites that are flush with each other in the axial direction. In this way, a labyrinth seal is achieved which prevents moisture from seeping into the sewer shaft. Furthermore, the sleeve 3 is provided with longitudinal ribs 18 (fig. 5) which secure the sleeve against turning in the hole.
Hylsen drives inn i hullet 2 i pilens P retning. De enkelte skjellaktige avsnitt 7 legger seg da fjærende an mot innerveggen og sikrer hylsen i hullet 2, således at uttrekking av hylsen hindres helt. Selvom hullveggen er ujevn eller hullet ikke er helt rundt, tilpasser de skjellaktige avsnitt 7 seg til de tilstøtende veggflatepartier og tetter mot hullveggen. The sleeve is driven into the hole 2 in the direction of the arrow P. The individual shell-like sections 7 then spring against the inner wall and secure the sleeve in the hole 2, so that extraction of the sleeve is completely prevented. Even if the hole wall is uneven or the hole is not completely round, the scale-like sections 7 adapt to the adjacent wall surface portions and seal against the hole wall.
Ved utførelsen ifølge fig. 4 er ytterribbene anordnet skruelinjeformede og som ovenfor inndelt i enkelte skjellaktige avsnitt 9. Også i dette tilfelle ligger bruddstedene 19 i til-støtende skruevindinger innbyrdes forskjøvet i omkretsretningen, således at der dannes en labyrinttetning. Hellingen av de In the embodiment according to fig. 4, the outer ribs are arranged helically and, as above, divided into individual shell-like sections 9. Also in this case, the fracture points 19 in adjacent screw turns are offset from each other in the circumferential direction, so that a labyrinth seal is formed. The slope of the
skruelinjeaktig anordnede ribbers overflate er rettet mot hyl- the surface of the helically arranged ribs is directed towards the
sens innføringsretning P. sense insertion direction P.
Utformingen og anordningen av innerribbene 5 er nøyak- The design and arrangement of the inner ribs 5 are precisely
tig som for ytterribbene, bortsett fra ribbeoverf latenes helling som er rettet i innf øringar etningen. tig as for the outer ribs, except for the slope of the ribs over the battens, which is corrected in the introduction of the seal.
Etter at hylsene 3 or ført inn i hullene 2, og de enkel- After the sleeves 3 have been inserted into the holes 2, and the simple
te ribbeavsnitt. 7 hhv. 9 har inntatt sin stilling, trykkes stige-elementenes 19 ben 11 inn i hylsene 3. Benenes 11 diameter er noe større enn svarende til hylsenes 3 boring 4, således at hyl- te rib section. 7 respectively 9 has assumed its position, the legs 11 of the ladder elements 19 are pressed into the sleeves 3. The diameter of the legs 11 is somewhat larger than corresponding to the bore 4 of the sleeves 3, so that the sleeve
sene blir noe utvidet og lukker den største del av bruddene 8 the tendon is somewhat expanded and closes the largest part of the fractures 8
hhv. 10. Dannelsen av labyrinter representerer en ytterligere sikkerhet mot at der ved eventuelle åpninger skal skje en gjen-nomgang av fuktighet. Stigeelementet 19 vil bli ubevegelig fastholdt og de langsgående ribber 18 som er vist på utførelsen ifølge fig. 5 vil hindre en eventuell dreining av hylsen 3 i boringen 2. respectively 10. The formation of labyrinths represents a further security against moisture passing through any openings. The ladder element 19 will be immovably held and the longitudinal ribs 18 which are shown in the embodiment according to fig. 5 will prevent any turning of the sleeve 3 in the bore 2.
Som nevnt viser fig. 1 en delvis montert stigeanord- As mentioned, fig. 1 a partially assembled ladder device-
ning med tre ferdigmonterte, forankrede stigeelementer 19 for innstigning i.en kanalisasjonssjakt. På samme måte kan de ander-ledes utformede stigeelementer, såsom et stavformet hjelpegrep 21 som er forsynt med en muffe 20, være festet i veggen. Hjelpe-grepet 21 er forskyvbart i muffen 20 og kan etter bruk bringes til den med strekede linjer viste hvilestilling.. ning with three pre-assembled, anchored ladder elements 19 for entry into a sewerage shaft. In the same way, the differently designed ladder elements, such as a rod-shaped auxiliary handle 21 which is provided with a sleeve 20, can be attached to the wall. The auxiliary grip 21 is displaceable in the sleeve 20 and can be brought to the rest position shown in dashed lines after use.
Skulle det av en eller annen grunn være nødvendig å Should it be necessary for any reason to
fjerne et stigeelement fra veggen, kan forankringen løsnes ved hjelp av en hydraulisk donkraft som anbringes mellom stigeelemen- remove a ladder element from the wall, the anchoring can be loosened using a hydraulic jack that is placed between the ladder element
tets 19 mellomstykke og veggen. tets 19 intermediate piece and the wall.
Claims (4)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT1000571A AT315754B (en) | 1971-11-19 | 1971-11-19 | Holder for climbing elements or the like. |
Publications (2)
Publication Number | Publication Date |
---|---|
NO133633B true NO133633B (en) | 1976-02-23 |
NO133633C NO133633C (en) | 1976-06-02 |
Family
ID=3619135
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO420272A NO133633C (en) | 1971-11-19 | 1972-11-17 |
Country Status (12)
Country | Link |
---|---|
AT (1) | AT315754B (en) |
CA (2) | CA956153A (en) |
CH (1) | CH556466A (en) |
DD (1) | DD99632A5 (en) |
DE (1) | DE2254550C3 (en) |
DK (1) | DK129868B (en) |
ES (1) | ES185822Y (en) |
GB (1) | GB1374178A (en) |
HU (1) | HU165473B (en) |
IT (1) | IT984608B (en) |
NL (1) | NL7215371A (en) |
NO (1) | NO133633C (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4100997A (en) * | 1976-06-21 | 1978-07-18 | Peacock Bobbie D | Step construction employing insertable fastener having deformable projections |
DE2713530C3 (en) * | 1977-03-26 | 1979-12-20 | Wilhelm 4030 Ratingen Nelles | Spreading connection |
DE3014745A1 (en) * | 1980-04-17 | 1981-10-22 | Itw-Ateco Gmbh, 2000 Norderstedt | ONE-PIECE FASTENING ELEMENT FROM PLASTIC (SELF-CENTERING TREE CLIP) |
CA1183707A (en) * | 1980-06-16 | 1985-03-12 | Lisa E. Chisholm | Plastic drive fastener |
DE3322985C1 (en) * | 1983-06-25 | 1984-11-22 | Chemieschutz Gesellschaft für Säurebau mbH, 6140 Bensheim | Climbing element to be anchored in a wall |
JPS60189607U (en) * | 1984-05-28 | 1985-12-16 | 株式会社 ムラコシ精工 | Connectors for wood, etc. |
US4610330A (en) * | 1984-07-25 | 1986-09-09 | Clay And Bailey Manufacturing Co., Inc. | Drive-in manhole step construction |
DE3430848A1 (en) * | 1984-08-22 | 1986-03-06 | Heinrich Urdorf Zürich Zenhäusern | STIRRUPS FOR FASTENING IN WALL AREAS |
US4655318A (en) * | 1985-10-04 | 1987-04-07 | H. Bowen Company, Inc. | Step assembly |
FR2588912B1 (en) * | 1985-10-23 | 1988-05-13 | Materiel Securite Urb | SEALING STEP AND FASTENING METHOD |
DE9016700U1 (en) * | 1990-12-10 | 1991-02-28 | Chemieschutz Gesellschaft für Säurebau mbH, 6140 Bensheim | Installation aid for crampons |
US5386784A (en) * | 1993-06-07 | 1995-02-07 | Meier; Charles W. | Railroad car hand hold assembly |
US20160252122A1 (en) * | 2013-10-30 | 2016-09-01 | As Connector | Locking device |
-
1971
- 1971-11-19 AT AT1000571A patent/AT315754B/en not_active IP Right Cessation
-
1972
- 1972-11-01 CH CH1609572A patent/CH556466A/en not_active IP Right Cessation
- 1972-11-06 CA CA155,769A patent/CA956153A/en not_active Expired
- 1972-11-08 DE DE19722254550 patent/DE2254550C3/en not_active Expired
- 1972-11-13 GB GB5223972A patent/GB1374178A/en not_active Expired
- 1972-11-14 NL NL7215371A patent/NL7215371A/xx not_active Application Discontinuation
- 1972-11-15 HU HUZE000393 patent/HU165473B/hu unknown
- 1972-11-16 DK DK570672A patent/DK129868B/en unknown
- 1972-11-17 IT IT3182972A patent/IT984608B/en active
- 1972-11-17 NO NO420272A patent/NO133633C/no unknown
- 1972-11-17 DD DD16691772A patent/DD99632A5/xx unknown
- 1972-11-18 ES ES1972185822U patent/ES185822Y/en not_active Expired
-
1977
- 1977-11-28 CA CA291,850A patent/CA1057540B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2254550B2 (en) | 1974-07-04 |
DD99632A5 (en) | 1973-08-12 |
DK129868C (en) | 1975-05-05 |
ES185822Y (en) | 1974-07-01 |
DE2254550C3 (en) | 1975-03-06 |
CA956153A (en) | 1974-10-15 |
NL7215371A (en) | 1973-05-22 |
NO133633C (en) | 1976-06-02 |
CA1057540B (en) | 1979-07-03 |
GB1374178A (en) | 1974-11-20 |
IT984608B (en) | 1974-11-20 |
CH556466A (en) | 1974-11-29 |
DE2254550A1 (en) | 1973-05-30 |
DK129868B (en) | 1974-11-25 |
AT315754B (en) | 1974-06-10 |
ES185822U (en) | 1973-10-16 |
HU165473B (en) | 1974-08-28 |
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