NO136217B - - Google Patents

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Publication number
NO136217B
NO136217B NO1344/73A NO134473A NO136217B NO 136217 B NO136217 B NO 136217B NO 1344/73 A NO1344/73 A NO 1344/73A NO 134473 A NO134473 A NO 134473A NO 136217 B NO136217 B NO 136217B
Authority
NO
Norway
Prior art keywords
pipe
explosives
filling
accordance
overlapping
Prior art date
Application number
NO1344/73A
Other languages
Norwegian (no)
Other versions
NO136217C (en
Inventor
S Fricker
H Reinkensmeier
Original Assignee
Fricker Frimeda Metall Draht
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 Fricker Frimeda Metall Draht filed Critical Fricker Frimeda Metall Draht
Publication of NO136217B publication Critical patent/NO136217B/no
Publication of NO136217C publication Critical patent/NO136217C/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/62Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
    • B66C1/66Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
    • B66C1/666Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof for connection to anchor inserts embedded in concrete structures
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14Conveying or assembling building elements
    • E04G21/142Means in or on the elements for connecting same to handling apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B45/00Hooks; Eyes
    • F16B45/04Hooks with sliding closing member
    • F16B45/049Hooks with sliding closing member provided with means biasing the closing member
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B45/00Hooks; Eyes
    • F16B45/04Hooks with sliding closing member
    • F16B45/053Hooks with sliding closing member provided with a cavity in a shank of the hook forming a track or way for the closing member
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B45/00Hooks; Eyes
    • F16B45/04Hooks with sliding closing member
    • F16B45/057Hooks with sliding closing member the hook forming a loop or ring when interlocked with the closing member, i.e. the entire structure of the hook being loop shaped
    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44CPERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/18Fasteners for straps, chains or the like
    • A44C5/20Fasteners for straps, chains or the like for open straps, chains or the like
    • A44C5/2009Fasteners for straps, chains or the like for open straps, chains or the like of the ring type
    • A44C5/2014Fasteners for straps, chains or the like for open straps, chains or the like of the ring type of the spring ring type
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00Buckles, buttons, clasps, etc.
    • Y10T24/45Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45225Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
    • Y10T24/45272Projection passes through cavity then moves toward noninserted portion of its member to complete interlock [e.g., snap hook]
    • Y10T24/45288Hook type projection member
    • Y10T24/45304Noninserted portion of projection member includes movably connected gate for closing access throat
    • Y10T24/45382Track or way guided gate
    • Y10T24/45387Track or way guided gate having means biasing gate
    • Y10T24/45398Cavity in shank forms track or way

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)

Description

Fremgangsmåte ved pakking av sprengstoffer med flyteevne. Procedure for packing explosives with buoyancy.

Denne oppfinnelse vedrører en fremgangsmåte ved pakking av sprengstoffer med flyteevne. This invention relates to a method for packing explosives with buoyancy.

Med uttrykket «sprengstoffer med flyteevne» er det ment å betegne sprengstoffer som kan bringes til å «flyte» utover, even-tuelt etter å være utsatt for trykk. Således er uttrykket ment å omfatte også pulver-formete eller tixotrope stoffer. With the expression "explosives with the ability to float" it is intended to denote explosives that can be made to "float" outwards, possibly after being exposed to pressure. Thus, the term is intended to also include powder-shaped or thixotropic substances.

Hensikten med oppfinnelsen er å kom-me frem til en fremgangsmåte ved pakking, The purpose of the invention is to arrive at a method for packaging,

av sprengstoffer, som kan gjennomføres på en effektiv måte og samtidig byr visse fordeler med hensyn til innføringen av sprengstoffet i et borhull. of explosives, which can be carried out in an efficient manner and at the same time offer certain advantages with regard to the introduction of the explosive into a borehole.

Fremgangsmåten ifølge oppfinnelsen The method according to the invention

er kjennetegnet ved at sprengstoffet til-føres til et lengdeveis oppslisset rør som har overlappende slisskanter og er laget av et materiale med så stor elastisitet at sliss-kantene kan føres elastisk bort fra hverandre for' enten å muliggjøre sideveis inn-føring av sprengstoff og/eller hjelpemid-ler for sprengningen, eller ved å sette innholdet under trykk medfører at det flyte-dyktige innhold kan presses sideveis for enten å flyte ut av røret eller å øke rør-diameteren. is characterized by the fact that the explosive is supplied to a longitudinally slotted pipe which has overlapping slot edges and is made of a material with such great elasticity that the slot edges can be moved elastically away from each other to either enable lateral introduction of explosive and/or or aids for the bursting, or by putting the contents under pressure means that the buoyant contents can be pushed sideways to either flow out of the pipe or to increase the pipe diameter.

Ytterligere trekk ved oppfinnelsen vil fremgå av den etterfølgende beskrivelse under henvisning til de medfølgende teg-ninger, hvor: Fig. 1 viser røret som anvendes i fremgangsmåten ifølge oppfinnelsen, i ube-lastet tilstand og. vist i tverrsnitt. Fig. 2. viser røret i tverrsnitt i en f j ær- spent tilstand. Fig. 3 viser røret i tverrsnitt under Further features of the invention will be apparent from the following description with reference to the accompanying drawings, where: Fig. 1 shows the pipe used in the method according to the invention, in an unloaded state and. shown in cross section. Fig. 2 shows the pipe in cross-section in a spring tense state. Fig. 3 shows the pipe in cross-section below

ifylling. filling

Fig. 4 viser røret i lengdesnitt under Fig. 4 shows the pipe in longitudinal section below

ifylling. filling

Fig. 5 viser et ifylt rør anbragt i et Fig. 5 shows a filled pipe placed in a

borhull, vist i tverrsnitt. borehole, shown in cross-section.

Fig. 6 viser borhullet ifølge fig. 5 etter-at innholdet i røret er satt under trykk. Fig. 6 shows the drill hole according to fig. 5 after the contents of the tube have been pressurized.

Enkelte av de sprengstoffer som be-nyttes idag. kan uten fare pakkes ferdig fra fabrikken i dertil egnete pakninger, mens man ved andre sprengstoffer, for eksempel ammoniumnitratblandinger, av sikkerhets-hensyn foretrekker å blande sprengstoff-komponentene sammen på bruksstedet, for direkte ifylling i et borhull. Det er imidler-tid for mange sprengningsoperasjoner av betydning at sprengstoffet kan bringes til å utfylle fullstendig det borhull som de skal plaseres i, enten de er pakket i pakninger eller de fylles direkte i borhullet. Some of the explosives used today. can be safely packaged from the factory in suitable packages, while with other explosives, for example ammonium nitrate mixtures, for safety reasons, it is preferred to mix the explosive components together at the point of use, for direct filling into a borehole. It is, however, important for many blasting operations that the explosives can be brought to completely fill the borehole in which they are to be placed, whether they are packed in gaskets or they are filled directly into the borehole.

Pakkingen av sprengstoff foretas ifølge oppfinnelsen ved hjelp av et lengdeveis oppslisset rør 10, hvis slisskantpartier 11 og 12 overlapper hverandre. Fortrinsvis er omkretslengden for det overlappende parti omtrent 1/10 av rørets totale omkrets-lengde. The packing of explosives is carried out according to the invention by means of a longitudinally slotted pipe 10, whose slotted edge portions 11 and 12 overlap each other. Preferably, the circumferential length of the overlapping portion is approximately 1/10 of the total circumferential length of the pipe.

Røret som anvendes er stivest mulig, i lengderetningen, men tillater at slisskantpartiene 11 og 12 føres fjærende mot og fra hverandre. Det er fordelaktig å frem-stille røret av plast, som for eksempel poly-vinylklorid. Herved kan røret, når det har en rørdiameter på fra 1 til 10 cm,, ha en godstykkelse på omtrent 0,1—1 mm. The tube that is used is the stiffest possible, in the longitudinal direction, but allows the slit edge parts 11 and 12 to be guided springily towards and away from each other. It is advantageous to make the tube from plastic, such as polyvinyl chloride. In this way, the pipe, when it has a pipe diameter of from 1 to 10 cm, can have a material thickness of approximately 0.1-1 mm.

I fig. 1 er det vist et plastrør 10 som er fremstillet ved ekstrudering. Det fremgår av figuren at det fremstilte rør i tverrsnitt har spiralform, hvor slisskantpartiene eller overlappingspartiene 11 og 12 har en viss fri avstand i radialretningen. In fig. 1 shows a plastic pipe 10 which is produced by extrusion. It is clear from the figure that the manufactured pipe has a spiral cross-section, where the slit edge parts or overlapping parts 11 and 12 have a certain free distance in the radial direction.

Plastrøret fremstilles fortrinsvis på følgende måte: Et sirkulært rør ekstru- The plastic pipe is preferably produced in the following way: A circular pipe is extruded

deres, hvoretter det oppslisses på langs og deretter føres det gjennom en varmesone og gjennom en sirkulær form med mindre diameter enn ekstruderingsdysen. theirs, after which it is slit lengthwise and then passed through a heating zone and through a circular mold with a smaller diameter than the extrusion die.

I fig. 2 er røret 10 vist i en fjærende innspent tilstand. Røret bringes til denne tilstand ved at partiene 11 og 12 «vrenges» In fig. 2, the tube 10 is shown in a resiliently clamped state. The pipe is brought to this state by parts 11 and 12 being "twisted"

eller bringes til å bytte plass. På grunn av den opprinnelige fri avstand i radialretningen mellom partiene 11 og 12, opp- or be made to change places. Due to the original free distance in the radial direction between the parts 11 and 12, up-

når man at disse i den tilstand som er vist i fig. 2 klemmes fjærende mot hverandre i retningen for pilen 13. when one realizes that these in the state shown in fig. 2 are clamped spring-loaded against each other in the direction of arrow 13.

I den tilstand som er vist i fig. 2 er In the condition shown in fig. 2 is

røret klart for ifylling av sprengstoff en- the tube ready for the filling of explosives en-

deveis inn i røret. diverted into the tube.

For sideveis ifylling av røret kan man For lateral filling of the pipe you can

like gjerne fylle røret i den tilstand det er vist i fig. 1. I fig. 3 er det med strekete linjer antydet røret før ifyllingen. Med fullt opptrukne linjer er røret vist i ut- just as easily fill the pipe in the condition shown in fig. 1. In fig. 3, dashed lines indicate the pipe before filling. With solid lines, the pipe is shown in

spent tilstand klar for sideveis innføring av sprengstoffet gjennom en fylledyse 14. excited state ready for lateral introduction of the explosive through a filling nozzle 14.

Ved hjelp av en relativ bevegelse mellom fylledysen 14 og røret 10 i rørets aksial- By means of a relative movement between the filling nozzle 14 and the pipe 10 in the pipe's axial

retning vil sprengstoffet kunne ifylles langsetter røret i ønskete mengder. direction, the explosive can be filled along the pipe in the desired quantities.

Det er videre mulig å foreta omspen- It is also possible to change

ningen eller vrengningen av partiene 11 the ning or inversion of the lots 11

og 12 slik at røret bringes fra tilstanden ifølge fig. 1 til tilstanden ifølge fig. 2, sam- and 12 so that the tube is brought from the state according to fig. 1 to the condition according to fig. 2, co-

tidig med selve ifyllingen av sprengstoffet. early with the actual filling of the explosive.

Dette kan opnas ved at partiet 12 trykkes This can be opened by pressing part 12

ned under nivået for partiet 11 like etter- down below the level of lot 11 just after

at det har passert fylledysen 14. Dette kan oppnåes ved hjelp av en styrerulle, en lede- that it has passed the filling nozzle 14. This can be achieved with the help of a guide roller, a guide

plate eller liknende, som for eksempel er festet til fylledysen i passende avstand fra denne. plate or similar, which is, for example, attached to the filling nozzle at a suitable distance from it.

I fig. 4 er det med en pil 15 vist be-vegelsesretningen for dysen 14 i forhold til røret 10 og med piler 16 er det vist ut-strømningsretningen for sprengstoffet fra dysen 14. In fig. 4, an arrow 15 shows the direction of movement of the nozzle 14 in relation to the pipe 10 and arrows 16 show the direction of flow of the explosive from the nozzle 14.

Et rør 10 som er ifylt sprengstoff 17 A pipe 10 which is filled with explosives 17

er vist i fig. 5. Etter ifyllingen av spreng- is shown in fig. 5. After the filling of the explosive

stoffet er det innsatt en tennledning 18 an ignition wire 18 has been inserted into the fabric

i spalten 19 mellom partiene 11 og 12 slik at den ligger skjult og beskyttet inne i pakningen. På tilsvarende måte kan også tennsatsen eller liknende innsettes i røret. in the gap 19 between the parts 11 and 12 so that it is hidden and protected inside the packing. In a similar way, the igniter or similar can also be inserted into the pipe.

Røret 10 med sprengstoffet 17 og tenn- The tube 10 with the explosive 17 and ignition

ledningen 18 samt tennsats er innført i et borhull 20 med større diameter enn røret 10, slik at røret lett kan innføres i bor- the wire 18 and igniter set are inserted into a drill hole 20 with a larger diameter than the pipe 10, so that the pipe can be easily inserted into the drill

hullet. the hole.

I fig. 6 er røret vist i en tilstand hvor In fig. 6, the tube is shown in a state where

man har oppnådd at røret har øket sin diameter oppimot borhullsdiameteren uten at innholdet i vesentlig grad har har sivet ut av røret. Dette er oppnådd ved at rørets innhold er satt under trykk fra enden. Selv om sprengstoffet siver ut mellom partiene 11 og 12 før røret har inntatt den stilling it has been achieved that the pipe has increased its diameter in relation to the borehole diameter without the contents having leaked out of the pipe to a significant extent. This has been achieved by pressurizing the contents of the pipe from the end. Even if the explosive leaks out between parts 11 and 12 before the pipe has taken that position

som er vist i fig. 6 får man likevel fylt hele borhullets tverrsnitt med sprengstoff. ' which is shown in fig. 6, the entire cross-section of the borehole can still be filled with explosives. '

Røret 10 kan være utstyrt med et pas- The tube 10 can be equipped with a pass-

sende endestykke og/eller et skjøtestykke til å forbinde to sammenstøtende rør, uten at det skal gis spesielle eksempler på send an end piece and/or a connecting piece to connect two abutting pipes, without giving specific examples of

dette heri. this here.

Claims (5)

1. Fremgangsmåte ved pakking av sprengstoffer med flyteevne, k ar a k t e-terisert ved at sprengstoffet tilføres til et lengdeveis oppslisset rør som har overlappende slisskanter og er laget av et materiale med så stor elastisitet at sliss-kantene kan føres elastisk bort fra hver-1. Procedure for packing explosives with buoyancy, characterized by the fact that the explosive is supplied to a longitudinally slotted tube which has overlapping slit edges and is made of a material with such great elasticity that the slit edges can be elastically moved away from each andre for enten å muliggjøre sideveis inn-føring av sprengstoff og/eller hjelpemid-ler for sprengningen, eller ved å sette innholdet under trykk medfører at det flyte-dyktige innhold kan presses sideveis for enten å flyte ut av røret eller å øke rør-diameteren. others to either enable the lateral introduction of explosives and/or aids for the blasting, or by putting the contents under pressure means that the flowable contents can be pushed sideways to either flow out of the pipe or to increase the pipe diameter . 2. Fremgangsmåte i samsvar med på-stand 1, karakterisert ved at det anvendes et rør hvis slisskantpartier eller overlappingspartier opprinnelig er anord-net i fri avstand i radialretningen og som bringes til en sideveis avtettet tilstand ved at de to partier bytter pias i radialretningen for å overlappe hverandre med fjærende anlegg. 2. Method in accordance with claim 1, characterized in that a pipe is used whose slit edge parts or overlapping parts are originally arranged at a free distance in the radial direction and which is brought to a laterally sealed state by the two parts changing sides in the radial direction for to overlap each other with spring-loaded facilities. 3. Fremgangsmåte i samsvar med på-stand 2, karakterisert ved at røret anvendes i dets opprinnelige tilstand for sideveis ifylling av sprengstoff og bringes til den avtettende tilstand etter ifyllingen. 3. Method in accordance with claim 2, characterized in that the pipe is used in its original state for lateral filling of explosives and brought to the sealing state after filling. 4. Fremgangsmåte i samsvar med på-stand 3, karakterisert ved ifyllingen av sprengstoff i røret samt omstillingen av røret til den avtettede tilstand foretas på samme tid ved at røret føres i en relativ bevegelse forbi et fylleredskap i et omstillingsorgan i rørets akseretning. 4. Method in accordance with claim 3, characterized by the filling of explosives into the pipe as well as the conversion of the pipe to the sealed state is carried out at the same time by the pipe being guided in a relative movement past a filling tool in a conversion device in the direction of the pipe's axis. 5. Fremgangsmåte i samsvar med en av de foregående påstander, karakterisert ved at røret er fremstillet i et en-hetlig stykke av plast, særlig hård P.V.C. eller plast med liknende egenskaper, med en godstykkelse av en størrelsesorden på 1/10 til 1/100 av rørdiameteren og med slisskantpartiene overlappende hverandre over omtrent 1/10 av rørets totale omkrets.5. Method in accordance with one of the preceding claims, characterized in that the pipe is produced in a single piece of plastic, particularly hard P.V.C. or plastic with similar properties, with a material thickness of an order of magnitude of 1/10 to 1/100 of the pipe diameter and with the slit edge portions overlapping each other over approximately 1/10 of the pipe's total circumference.
NO1344/73A 1972-08-16 1973-04-02 FITTINGS FOR FIXING LIFTING ROPES OR LIFTING CHAINS FOR HEAVY LOADS. NO136217C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2240171A DE2240171C3 (en) 1972-08-16 1972-08-16 Transport anchor

Publications (2)

Publication Number Publication Date
NO136217B true NO136217B (en) 1977-04-25
NO136217C NO136217C (en) 1977-08-03

Family

ID=5853668

Family Applications (1)

Application Number Title Priority Date Filing Date
NO1344/73A NO136217C (en) 1972-08-16 1973-04-02 FITTINGS FOR FIXING LIFTING ROPES OR LIFTING CHAINS FOR HEAVY LOADS.

Country Status (14)

Country Link
US (1) US3883170A (en)
AT (1) AT328665B (en)
BE (1) BE801130A (en)
CA (1) CA980981A (en)
CH (1) CH554805A (en)
DE (1) DE2240171C3 (en)
DK (1) DK141516C (en)
FI (1) FI50960C (en)
FR (1) FR2196286B1 (en)
GB (1) GB1418714A (en)
IT (1) IT987738B (en)
NL (1) NL162166C (en)
NO (1) NO136217C (en)
SE (1) SE399865B (en)

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Also Published As

Publication number Publication date
GB1418714A (en) 1975-12-24
CA980981A (en) 1976-01-06
DK141516C (en) 1980-09-29
FI50960C (en) 1976-09-10
SE399865B (en) 1978-03-06
NL162166C (en) 1980-04-15
IT987738B (en) 1975-03-20
FR2196286B1 (en) 1977-12-30
ATA276673A (en) 1975-06-15
FI50960B (en) 1976-05-31
DE2240171C3 (en) 1975-06-05
CH554805A (en) 1974-10-15
NL162166B (en) 1979-11-15
NO136217C (en) 1977-08-03
BE801130A (en) 1973-10-15
FR2196286A1 (en) 1974-03-15
DK141516B (en) 1980-04-08
AT328665B (en) 1976-04-12
NL7304963A (en) 1974-02-19
DE2240171B2 (en) 1974-10-10
DE2240171A1 (en) 1974-03-07
US3883170A (en) 1975-05-13

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