NO162018B - PROCEDURE FOR THE PREPARATION OF 4-METHYL-5-ALKYLTYOMETHYLIMIDAZOLES. - Google Patents

PROCEDURE FOR THE PREPARATION OF 4-METHYL-5-ALKYLTYOMETHYLIMIDAZOLES. Download PDF

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Publication number
NO162018B
NO162018B NO833664A NO833664A NO162018B NO 162018 B NO162018 B NO 162018B NO 833664 A NO833664 A NO 833664A NO 833664 A NO833664 A NO 833664A NO 162018 B NO162018 B NO 162018B
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NO
Norway
Prior art keywords
clamping
conical
ring
double
ring set
Prior art date
Application number
NO833664A
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Norwegian (no)
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NO833664L (en
NO162018C (en
Inventor
Boerge Alhede
Niels Gelting
Finn Priess Clausen
Herbert Preikschat
Original Assignee
Gea Farmaceutisk Fabrik As
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 Gea Farmaceutisk Fabrik As filed Critical Gea Farmaceutisk Fabrik As
Publication of NO833664L publication Critical patent/NO833664L/en
Publication of NO162018B publication Critical patent/NO162018B/en
Publication of NO162018C publication Critical patent/NO162018C/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D233/00Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
    • C07D233/54Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
    • C07D233/64Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms, e.g. histidine
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C323/00Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
    • C07C323/23Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and nitrogen atoms, not being part of nitro or nitroso groups, bound to the same carbon skeleton
    • C07C323/39Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and nitrogen atoms, not being part of nitro or nitroso groups, bound to the same carbon skeleton at least one of the nitrogen atoms being part of any of the groups, X being a hetero atom, Y being any atom
    • C07C323/43Y being a hetero atom
    • C07C323/44X or Y being nitrogen atoms

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Steroid Compounds (AREA)

Description

Spennringsett. Tension ring set.

Foreliggende oppfinnelse vedrorer et spennringsett for fastspenning av en del, f.eks. et maskinelement av en hvilken som helst art, til en sylindrisk aksel og som består av to spennringer som er utformet med koniske spennflater og som ved hjelp av akseparallelle bolter eller skruer spennes mot hinannen og mot komplementære, koniske flater på en konsentrisk motring. Ved hjelp av de akseparallelle bolter eller skruer spennes spennringene mot hinannen, således at der mellom akselen, spennringene og det maskinelement som skal fastspennes til akselen, oppnås tilstrek-kelig store friksjonskrefter til å sikre at maskinelementet fast-holdes til akselen både like overfor torsjons- og aksiale på-virkninger* ;Ennvidere er spennringsett kjent, ved hvilke de aksiale forløpende bolter eller skruer enten er fort gjennom flenser og således ligger utenfor de koniske anleggsflater, hvilket krever særskilte, utboringer for disse bolter i vedkommende maskinelement, eller er fort gjennom de koniske anleggsflater mellom de to kile-formede ringer, således at der ved anvendelsen vil oppstå problemer med hensyn til å få boringene for bolter til å ligge i flukt med hinannen. ;Hensikten med oppfinnelsen er å skaffe et spennringsett av den innledningsvis nevnte art, ved hvilket de forskjellige omtalte ulemper er unngått, som er billig å fremstille, som ikke krever altfor ndyaktig overholdelse av bestemte diametre for akselen og utboringen i vedkommende maskinelement, således at spennringsettet kan leveres som en standardvare som ikke krever spesiell bearbeidelse av de maskinelementer som skal festes ved hjelp av settet, og som endelig er lett å montere og demontere. Dette oppnås i henhold til oppfinnelsen ved at ringsatsen består av den dobbeltkoniske ring og to spennringer, at i tillegg til den dobbeltkoniske rings kontaktflate som kommer til anlegg mot det maskinelement som skal festes, også de tilsvarende kontaktflater på spennringene, som kommer til anlegg mot akselen, er sylindrisk utformet, og at den dobbeltkoniske ring og de to spennringer er slisset. ;Derved oppnås et allsidig anvendbart spennringsett nemlig én dobbeltkonisk ring ot to spennringer, til hvilke der ikke stilles hoye krav med hensyn til toleranse, hverken for selve delenes vedkommende eller for de flater av to maskinelementer spa spennringsettet skal ligge an mot for sammenspenning av disse elementer. Fortrinnsvis anbringes den dobbeltkoniske ring ytterst med den dobbeltkoniske flate vendende innad for samvirke med tilsvarende koniske ytterflater på de to spennringer som anbringes koaksialt i den dobbeltkoniske ring med sine innvendige sylindriske flater til anlegg mot den aksel som maskinelementet skal anbringes på, mens den dobbeltkoniske xings ytre sylindriske flate er bestemt til å ligge an mot en boring i maskinelementet. Det vil være klart at det også ligger innenfor oppfinnelsens ramme å utforme spennringsettet omvendt, dvs. således at den dobbeltkoniske ring anordnes innerst med sin sylindriske flate til anlegg mot akselen og med sin dobbeltkoniske flate vendt ut for samvirke med de to <spennringer som spennes sammen ved hjelp av de aksialt anordnede bolter med skruer. I dette tilfelle har spennringene sine innerflater utformet konisk for samvirke med den dobbeltkoniske ring og sine ytterflater utformet sylindrisk for anlegg i boringen i det maskinelement som skal festes til akselen»;Ved en spesiell utforelse av spennringsettet ifolge oppfinnelsen utgjores den indre del av to spennringer. ;Disse og andre trekk ved oppfinnelsen vil fremgå av ;den folgende beskrivelse av noen utforelseseksempler på oppfinnelsen som er gjengitt på tegningen, på hvilken fig. 1 viser en foretrukket utforelse sett i perspektiv, fig. 2 viser et aksialsnitt av samme, fig. 3 viser et aksialsnitt av en endret utforelse og fig. 4 viser et aksialsnitt av en sammenkobling mellom en aksel og et hjulnav ved hjelp av spennringsettet ifolge fig. 1 og 2. ;Fig. 1 og 2 viser en foretrukket utforelse av spennringsettet 10 ifolge oppfinnelsen. Det består av en ytre, dobbeltkonisk ringformet del 32 med en langsgående eller akseparallell sliss 34. Yttersiden av delen 32 er sylindrisk og bestemt til anlegg mot innerveggen av en boring i et eller annet maskinelement, f.eks. et svinghjuls, en remskives eller et tann- eller kjedehjuls-nav, en arm osv. som skal festes til en aksel. Innersiden av ringen 32 er utformet dobbeltkonisk, dvs. begrenset av to stumpkoniske flater 36 og 38 som vender den lille grunnflate fra hinannen. Innenfor den dobbeltkoniske ring 32 er der anbragt to i flukt liggende spennringer 22 og 24 som sammen begrenser en spalte 20 som står loddrett på spennringsettets sentralakse. Ringenes 22 og 24 ytterflater er konisk formet i overensstemmelse med flatene 36 og 38 ;og deres boring passer til en aksel, et ror eller et annet sylindrisk maskinelement med sirkulært tverrsnitt. Ringene 22 og 24 er også forsynt med akseparallelle slisser 23. For å kunne spenne ringene 22 og 24 mot hinannen, har de akseparallelle boringer for spenn-skruer eller bolter. Ved den viste utforelse anvendes tre såkalte "Umbraco'<*>-skruer 26, 28 og 30, hvis hoder er forsynt med en sekskant-fordypning for en tilsvarende formet nokkel. Skruehodene er forsenket i fordypninger i ringen 24 og ligger med undersiden The present invention relates to a clamping ring set for clamping a part, e.g. a machine element of any kind, for a cylindrical shaft and consisting of two clamping rings which are designed with conical clamping surfaces and which, by means of axis-parallel bolts or screws, are clamped against each other and against complementary conical surfaces on a concentric counter-ring. With the aid of the axis-parallel bolts or screws, the clamping rings are clamped against each other, so that between the shaft, the clamping rings and the machine element to be clamped to the shaft, sufficiently large frictional forces are achieved to ensure that the machine element is held to the shaft both opposite the torsion and axial influences* ;Furthermore, clamping ring sets are known, in which the axial running bolts or screws are either fast through flanges and thus lie outside the conical contact surfaces, which requires special bores for these bolts in the relevant machine element, or are fast through the conical contact surfaces between the two wedge-shaped rings, so that during use problems will arise with regard to getting the bores for bolts to lie flush with each other. The purpose of the invention is to provide a clamping ring set of the type mentioned at the outset, whereby the various mentioned disadvantages are avoided, which is cheap to produce, which does not require overly strict adherence to specific diameters for the shaft and the bore in the relevant machine element, so that the clamping ring set can be delivered as a standard item that does not require special processing of the machine elements to be attached using the kit, and which is finally easy to assemble and disassemble. This is achieved according to the invention by the fact that the ring set consists of the double-conical ring and two clamping rings, so that in addition to the contact surface of the double-conical ring that comes into contact with the machine element to be attached, also the corresponding contact surfaces of the clamping rings, which come into contact with the shaft , is cylindrically designed, and that the double-conical ring and the two clamping rings are slotted. Thereby, a universally applicable clamping ring set is achieved, namely one double-conical ring or two clamping rings, to which no high demands are made in terms of tolerance, neither for the parts themselves nor for the surfaces of two machine elements that the clamping ring set must rest against for clamping these elements together . Preferably, the double-conical ring is placed at the outer end with the double-conical surface facing inwards for cooperation with corresponding conical outer surfaces of the two clamping rings which are placed coaxially in the double-conical ring with their internal cylindrical surfaces for abutment against the shaft on which the machine element is to be placed, while the outer of the double-conical xings cylindrical surface is intended to rest against a bore in the machine element. It will be clear that it is also within the scope of the invention to design the clamping ring set in reverse, i.e. so that the double-conical ring is arranged on the inside with its cylindrical surface for bearing against the shaft and with its double-conical surface facing outwards for cooperation with the two clamping rings that are clamped together by means of the axially arranged bolts with screws. In this case, the clamping rings have their inner surfaces designed conically for cooperation with the double-conical ring and their outer surfaces designed cylindrically for contact in the bore in the machine element to be attached to the axle"; In a special embodiment of the clamping ring set according to the invention, the inner part is made up of two clamping rings. These and other features of the invention will be apparent from the following description of some embodiments of the invention which are reproduced in the drawing, in which fig. 1 shows a preferred embodiment seen in perspective, fig. 2 shows an axial section of the same, fig. 3 shows an axial section of a modified embodiment and fig. 4 shows an axial section of a connection between an axle and a wheel hub using the clamping ring set according to fig. 1 and 2. ;Fig. 1 and 2 show a preferred embodiment of the clamping ring set 10 according to the invention. It consists of an outer, double-conical ring-shaped part 32 with a longitudinal or axis-parallel slot 34. The outer side of the part 32 is cylindrical and intended for abutment against the inner wall of a bore in some machine element, e.g. a flywheel, a pulley or a tooth or sprocket hub, an arm, etc. to be attached to an axle. The inner side of the ring 32 is designed double-conical, i.e. limited by two frusto-conical surfaces 36 and 38 which face the small base surface from each other. Within the double-conical ring 32, there are arranged two flush clamping rings 22 and 24 which together limit a gap 20 which is vertical to the central axis of the clamping ring set. The outer surfaces of the rings 22 and 24 are conically shaped in accordance with the surfaces 36 and 38; and their bore fits an axle, a rudder or other cylindrical machine element of circular cross-section. The rings 22 and 24 are also provided with axis-parallel slots 23. In order to be able to clamp the rings 22 and 24 against each other, they have axis-parallel bores for clamping screws or bolts. In the embodiment shown, three so-called "Umbraco"<*> screws 26, 28 and 30 are used, the heads of which are provided with a hexagonal recess for a correspondingly shaped key. The screw heads are recessed in recesses in the ring 24 and lie with the underside

an mot en avsats i fordypningen. against a ledge in the recess.

Boringene i ringen 22 er gjenget for innskruing av skruene 26, 28 og 30. Alt etter de krav som stilles til spennringsettet kan der anvendes et storre eller mindre antall skruer eller bolter. The bores in the ring 22 are threaded for screwing in the screws 26, 28 and 30. Depending on the requirements placed on the clamping ring set, a larger or smaller number of screws or bolts can be used.

En eksempelvis anvendelse av spennringsettet er vist An exemplary application of the clamping ring set is shown

på fig. 4. Settet er skjovet inn på en aksel 42 og utenpå settet er der anbragt et maskinelement 40 av en eller annen art med en sylindrisk boring 44 i et nav. Ved tiltrekning av de akseparallelle skruer, hvorav bare to, 26 og 28, er vist på fig. 4, trekkes de to innvendige, slissede spennringer mot hinannen, således at de med sine koniske ytterflater vil gli mot de tilsvarende koniske innerflater av den likeledes slissede dobbeltkoniske ring 32, så» ledes at denne utvides samtidig med at de indre ringer trykkes sammen henholdsvis trykkes mot boringen 44 på den ene side og akselen 42 på den annen side. Friksjonskreftene mellom de flater som ligger an mot hinannen, vil derved bli så store at der oppnås en fast forbindelse mellom akselen 42 og maskinelementet 40. Der vil imidlertid stadig være en mulighet for glidning, hvis be-lastningen overstiger en forutbestemt verdi, således at spennringsettet ifolge oppfinnelsen også vil tjene som en overbelastningssikring. on fig. 4. The set is pushed onto a shaft 42 and a machine element 40 of one kind or another with a cylindrical bore 44 in a hub is placed on the outside of the set. When tightening the axis-parallel screws, of which only two, 26 and 28, are shown in fig. 4, the two internal, slotted clamping rings are pulled towards each other, so that with their conical outer surfaces they will slide against the corresponding conical inner surfaces of the similarly slotted double-conical ring 32, so that this is led to expand at the same time as the inner rings are pressed together or pressed against the bore 44 on one side and the shaft 42 on the other side. The frictional forces between the surfaces abutting each other will thereby become so great that a firm connection is achieved between the shaft 42 and the machine element 40. However, there will still be a possibility of slipping if the load exceeds a predetermined value, so that the clamping ring set according to the invention will also serve as an overload protection.

I de tilfelle hvor en overbelastningssikring ikke er onskelig, kan spennringsettets holdekraft overfor aksiale påvirk-ninger okes i vesentlig grad ved at akselen og/eller boringen i maskinelementet avdreies noe over det parti hvor spennringsettet ligger an. De slissede ringers store elastisitet vil dog gjore det mulig å innfore og fastspenne ringene på det Snskede sted. In those cases where an overload protection is not desirable, the clamping ring set's holding power against axial influences can be increased to a significant extent by turning the shaft and/or the bore in the machine element slightly above the part where the clamping ring set rests. The great elasticity of the slotted rings will, however, make it possible to insert and fasten the rings in the desired place.

Slissene 23 og 34 kan ha en sådan bredde at de samtidig kan tjene som aot«r for fjærer eller kiler i akselen henholdsvis maskinelementet, hvorved det vil være mulig å overfore meget store dreiemomenter. Innenfor oppfinnelsens ramme er det også mulig å utfore spennringsettet omvendt, ti, eks. som vist på fig. 3. Ved denne utforelse har den dobbeltkoniske ring 32a som er forsynt med en akseparallell sliss, en sylindrisk ineerflate som ligger an mot akselen, og en dobbeltkonisk ytterflate. Mot denne ligger de likeledes slissede og ved hjelp av bolter eller skruer sammen-spente spennringer 22a og 24a, hvis innerflater er tilsvarende konisk formet, mens deres ytterflater er sylindriske, således at spennringsettet kan fastspennes i boringen i maskinelementet. The slots 23 and 34 can have such a width that they can simultaneously serve as aot«r for springs or wedges in the shaft or the machine element, whereby it will be possible to transfer very large torques. Within the framework of the invention, it is also possible to carry out the clamping ring set in reverse, ten, e.g. as shown in fig. 3. In this embodiment, the double-conical ring 32a, which is provided with an axis-parallel slot, has a cylindrical inner surface which rests against the shaft, and a double-conical outer surface. Opposite this lie the similarly slotted and clamped together by means of bolts or screws clamping rings 22a and 24a, whose inner surfaces are correspondingly conically shaped, while their outer surfaces are cylindrical, so that the clamping ring set can be clamped in the bore in the machine element.

Claims (2)

1. Spennringsett for fastspenning av en del, f.eks. et maskinelement til en sylindrisk aksel, bestående av to spennringer (22, 24; 22a, 24a) som er utformet med koniske spennflater (36, 38) og som ved hjelp av akseparallelle bolter eller skruer (26, 28, 30; 26a, 28a) spennes mot hinannen og mot komplementære, koniske flater på en konsentrisk motring (32; 32a), karakterisert ved at ringsatsen består av den dobbeltkoniske ring (32; 32a) og to spennringer (22, 24; 22a, 24a), at i tillegg til den dobbeltkoniske rings kontaktflate som kommer til anlegg mot det maskinelement som skal festes, også de tilsvarende kontaktflater på spennringene (22, 24; 22a, 24a), som kommer til anlegg mot akselen, er sylindrisk utformet, og at den dobbeltkoniske ring og de to spennringer er slisset (ved 23 og 34).1. Clamping ring set for clamping a part, e.g. a machine element for a cylindrical shaft, consisting of two clamping rings (22, 24; 22a, 24a) which are designed with conical clamping surfaces (36, 38) and which by means of axis-parallel bolts or screws (26, 28, 30; 26a, 28a ) are clamped against each other and against complementary, conical surfaces on a concentric counter ring (32; 32a), characterized in that the ring set consists of the double-conical ring (32; 32a) and two clamping rings (22, 24; 22a, 24a), that in addition to the contact surface of the double-conical ring which comes into contact with the machine element to be fixed, also the corresponding contact surfaces of the clamping rings (22, 24; 22a, 24a), which come into contact with the shaft, are cylindrically designed, and that the double-conical ring and the two clamping rings are slotted (at 23 and 34). 2. Spennringsett i henhold til krav 1, karakterisert ved at ringsettets indre del utgjores av de to spennringer (22, 24).2. Clamping ring set according to claim 1, characterized in that the inner part of the ring set is made up of the two clamping rings (22, 24).
NO833664A 1982-10-08 1983-10-07 PROCEDURE FOR THE PREPARATION OF 4-METHYL-5-ALKYLTYOMETHYLIMIDAZOLES. NO162018C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8228782 1982-10-08

Publications (3)

Publication Number Publication Date
NO833664L NO833664L (en) 1984-04-09
NO162018B true NO162018B (en) 1989-07-17
NO162018C NO162018C (en) 1989-10-25

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ID=10533472

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Application Number Title Priority Date Filing Date
NO833664A NO162018C (en) 1982-10-08 1983-10-07 PROCEDURE FOR THE PREPARATION OF 4-METHYL-5-ALKYLTYOMETHYLIMIDAZOLES.

Country Status (18)

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JP (3) JPS5988472A (en)
AU (1) AU560031B2 (en)
BE (1) BE897952A (en)
CA (1) CA1199030A (en)
CH (2) CH659650A5 (en)
DE (1) DE3336225A1 (en)
DK (1) DK159309C (en)
FI (1) FI79301C (en)
FR (1) FR2534256B1 (en)
GB (1) GB2129793B (en)
IE (1) IE55946B1 (en)
NL (1) NL191181C (en)
NO (1) NO162018C (en)
NZ (1) NZ205652A (en)
PT (1) PT77468B (en)
SE (2) SE449746B (en)
ZA (1) ZA837237B (en)
ZW (1) ZW21383A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8618846D0 (en) * 1986-08-01 1986-09-10 Smithkline Beckman Corp Chemical process
JPH0623179B2 (en) * 1986-09-01 1994-03-30 三井石油化学工業株式会社 Cyanoguanidine derivative and method for producing the same
JPH0629234B2 (en) * 1986-12-26 1994-04-20 三井石油化学工業株式会社 α-acyloxyketone derivative
JPH0623180B2 (en) * 1987-02-17 1994-03-30 三井石油化学工業株式会社 Cyanoguanidine derivative and method for producing the same
JPH0623181B2 (en) * 1987-02-17 1994-03-30 三井石油化学工業株式会社 Cyanoguanidine derivative and method for producing the same
JPS63208565A (en) * 1987-02-23 1988-08-30 Mitsui Petrochem Ind Ltd Production of guanidine derivative
JPS63208566A (en) * 1987-02-23 1988-08-30 Mitsui Petrochem Ind Ltd Production of guanidine derivative
JP3006356U (en) * 1994-04-12 1995-01-24 株式会社フコク Torsional vibration absorber
CN115745893A (en) * 2022-11-16 2023-03-07 西安近代化学研究所 Method for synthesizing 2-cyano-5-aryl-1H-imidazole compound

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1338169A (en) * 1971-03-09 1973-11-21 Smith Kline French Lab Ureas thioureas and guanidines
GB1533380A (en) * 1974-09-02 1978-11-22 Smith Kline French Lab Process for the preparation of heterocyclic substituted thioureas and h-cyanoguanidines

Also Published As

Publication number Publication date
AU1995683A (en) 1984-04-12
JPH0449539B2 (en) 1992-08-11
ZA837237B (en) 1984-11-28
SE8305508L (en) 1984-04-09
FR2534256A1 (en) 1984-04-13
NO833664L (en) 1984-04-09
DK451883A (en) 1984-04-09
CH659650A5 (en) 1987-02-13
IE832198L (en) 1984-04-08
PT77468B (en) 1986-02-12
FI833648A (en) 1984-04-09
DK451883D0 (en) 1983-09-30
NO162018C (en) 1989-10-25
FR2534256B1 (en) 1986-04-04
SE8500176D0 (en) 1985-01-15
BE897952A (en) 1984-01-30
SE459808B (en) 1989-08-07
GB2129793A (en) 1984-05-23
SE449746B (en) 1987-05-18
GB2129793B (en) 1986-03-12
JPS62161767A (en) 1987-07-17
PT77468A (en) 1983-11-01
JPS5988472A (en) 1984-05-22
ZW21383A1 (en) 1984-01-18
SE8305508D0 (en) 1983-10-06
FI79301C (en) 1989-12-11
NZ205652A (en) 1987-05-29
DE3336225C2 (en) 1993-06-24
DK159309C (en) 1991-03-11
JPH0579061B2 (en) 1993-11-01
CH660483A5 (en) 1987-04-30
IE55946B1 (en) 1991-02-27
FI833648A0 (en) 1983-10-07
NL191181B (en) 1994-10-03
FI79301B (en) 1989-08-31
CA1199030A (en) 1986-01-07
DE3336225A1 (en) 1984-04-12
JPS62161766A (en) 1987-07-17
AU560031B2 (en) 1987-03-26
GB8326767D0 (en) 1983-11-09
NL191181C (en) 1995-03-01
NL8303351A (en) 1984-05-01
SE8500176L (en) 1985-01-15
DK159309B (en) 1990-10-01

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