CS231351B1 - Piston compressor plant - Google Patents
Piston compressor plant Download PDFInfo
- Publication number
- CS231351B1 CS231351B1 CS796568A CS656879A CS231351B1 CS 231351 B1 CS231351 B1 CS 231351B1 CS 796568 A CS796568 A CS 796568A CS 656879 A CS656879 A CS 656879A CS 231351 B1 CS231351 B1 CS 231351B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- piston compressor
- hto
- crankshaft
- yctahobkh
- compressor plant
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B25/00—Multi-stage pumps
- F04B25/02—Multi-stage pumps of stepped piston type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Description
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OdazHo npzHHToe ono3ZToe zcnosHeHze npescrassaeT eqe óoxeensoxze npesnocasKz. $3 npHHDznzasBHo luecTZ doKOBHX noBepx-Hociefi Ha Kopnyce npzBOSHoro MexaHZ3Ma, κοτορυίι, kbk npaBzso·,ζοποζηθη b Buse Kyda, hhtb Z3 hzx c caMoro Hazasa hbshktch3aHHTHMH npHBOSOM, CMa30ZH0fi rpyiHIOH, SByMH ΠρΗΟΟββΖΗβΗΖΗΜΖHZSZHSpOB Z HKKHeŽ ZaCTBIO K3K MOHTaSHaH nSOUiaSB. ΤθΜ OSMUM,BepxHHH ctopona Kopnyca ocsaeTcfl socTynoM κ BHyTpeHHocTz npz-BOSHOrb MexaHH3Ma, HO OHa B 0Π03ΖΤΗ0Μ ZCnOSHeHZZ 3aCTpoeHanpoMestyTOHHHM oxsaweseM, npezMymecTBeHHO pacnoso&eHHHM HasΗθκ. 3aHHMaeMaH 3Tzm bzsom zcnosHeHzs oTHoczTesBHo dosBmaansomass οτηηοβζτοη pacnososeHzeM npzBOSHoro SBzraTess esedosBine. ynpyroe ycTaHOBsemie de3 $yHsaMeHTa raicoS ycTaHOBKZB03M0KH0 tosbko, κθκ npaBzso, b csyzae πρημθηθηηη ochobhožpaMu, BocnpHHHMaraineS odmzS arperaT. HosHoe KancioszpoBaHze ot3Byica b nesecoodpa3HOM zcnosHeHzz hbshiotch ηθμηοζζμημζ. Koh-CTpyKTZBHHe y3SH c nzszHSpaMz iipasoz z seBož οτσροΗ ηθβο3μο£-HO BUnOSHHTB ΠρΗΜΟ OSZHaKOBO. ‘
JlaJIBDie Z3BeCTeH MHOrOSZSZHSPOBHZ KOMnpeCCOp CO 3Be3S00dpa3H0pacnosoHeHHHMZ b oshoě esockoctz nzszHSpaMz, npzBOS κοτοροτοnpozcxoszT CBepxy. ΓλθβηηΚ πρζ3ΗΗΚ θτογο Kownpeceopa cynjecTByετ b tom, hto MacJioHacoe '· pacnososeH Hzse ypoBHH Macsa z moh-TasHHÉ dsoK, cocTOflnjzft Z3 KoseHzaToro Basa, rsaBHoro inaTysaz Bcex npzseiiHHX maTyzoB, BCTpazBaeTcz b KOMnpeccopHH® κορ-nyc z npzBOSHnz SBzraTesB z KOMnpeócop coeszHéHH Μγφτοβ, aTaKKe Kopnyc KOMnpeccopa ZMeeT b KazecTBe ηζχηθγο οκοηζβηζη 3 nojwoHa Oto c KpenesHoS κροΝίκοκ, cjiysamefi naň MOHTasa kom-npeccopa (DD-v,? 27 146). - -
He^ocTaTKu 3Toro KOMnpeccopa b οτηοιιιθηηη k npHBojmoMy ícbh-raT&mo h KOHCTpyKKHH noOTona cymecTByioT b tom, hto Mexoy -πρΗΒΟβΗΗΜ íBHraTejieM h KOJieHHaTHM BajiOM npejycMOTpeHa My$-Ta, KOTopaa ηρτκο,ίξητ κ yBejnrieHHio nncna KOHCTpyKTnBHHX one-ΜΘΗΤΟΒ, a TaKSe Κ B03HHKH0BeHHID norpeniHOCTH HéHTpOBKH.
Tan KaK Kopnyc KOMnpeccopa jí hojuoh hbjlhiotch κοηοτρτκτηβηοΚejiHHHixeS η He ημθιοτ nopoxnoro npocBeTa, ne cyirecTByeT onra-MajiBHOH bo3mózhocth oTBo^a reiuia.
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IWL M30EPETEHW
UejiB K3oópeTeHzn coctoht b tom, htoóh co3saTL nopniHeByraKOMnpeccopHyio ycTaHOBKy b οπο3ητηομ ηοποληθηηη κομπβκτηοH ΟΗΜΜΘΤρΗΗΗΟ. H3MEHME CWOCTH Η30ΕΡΕΊΈΗΗ3 3anana H3oópeTeHHH coctoht b tom, htoóh csenaTB ηηθητηη-hhm ocb KOJienaaToro Baňa c ocbk neHTpa τηηθοτκ βοθη koh- CTpyKUHH..
CornacHo H30ÓpeTeHns), sahana pemaeTcn τθμ, hto κολϊθηηβτηηBaň pacnojiaraeTca b KapTepe BepTHKajiBHo, cboóohho bhchhhhnojwoH - Ha ΗΐηκΗθβ οτοροΗβ KapTepa η οημμθτρηηξο κ κολόξ-naTOMy Bány, a nojyiopKa KOMnpeccopHot ycTaHOBKH ocyiqecTB-jineTca Ha Kpaax CTyneHnaToro nopinHH. ípyroe πρββποΗΤΗΤβ,ηΒ-Hoe ηοποληθηιιθ coctoht b tom, hto BHcaeiffiawní rnyinHTejiBniyMa η oxnaKH-TenH pacnojioseHH οημμθτρηηηο k KoneHnaTOMy Bány.
ΠΡΚΜΕΡ QCWCTBJIM3 M30EPETEHHE I430ÓpeTeHHe ο0έηοηηθτοη ηιεκθ npmviepoM ocyinecTBJíeHHH.
Ha npmiaraeMHX nepTesax HOKa3aHo: Φηγ. I: Βηλ cnepejíH KOMnpeccopHoS ycTaHOBKH Óe3 npoMesyTon·ΗΟΓΟ H JtOnOJIHHTGJILHOrO OXJia^HTeJIH. Φηγ. 2: Bhjc CBepxy Ha KOMnpeccopHyio ycTaHOBKy no B-B. Φηγ. 3: Βκβ cóoicy KOMnpeccopHoft ycTaHOBKH no A-A.
HcnojiHeHHUil b bhks Kyóa Kap.iep I οοκβρκπτ íByxKDJieHqarafiBaJi 2, nepneHíHKyjiapHo ycTaHOBJíeHHHS, a yjmHHeHHan h Han-paBJíeHHan BBepx KOHneBan nanma KOToporo HenocpescTBeHHO&ecTKO coeflHHeHa c ροτοροΜ sjíeKTpiraecKoro πρηβο£ηογο KBnra-TejLH. ΙΊ3 3Toro βο3ηηκβθτ pacnojioseHne neTHpexyrojiBHoro κορ-nyca jíBHraTejiH 3 Ha BepxneĚ οτοροκβ KapTepa I. JÍBe προτκΒΟ-nojioKHne óokobhg ποβθρχηοοτη KapTepa I npe^ycMOTpeHii jvihΠρΗΟΟθίζΗΗΘΗΗΗ aÓCOJIIOTHO ΟβΗΗΘΚΟΒΝΧ ΗΟΠΟΛΗΘΗΗΗΧ, HO ΠθρθΜΘ-meHHHX npyr κ £pyry Ha 180° ηοποπηθηηηχ b βηλθ Kyóa cTyneH-HaTHX IíHJIHHJipOB 4, ΠρΗΉΘΜ ΗΟΟΙΪΜΜβΤρΗΉΘΟΚΟΘ ΠΟΗΟΚΘΗΗΘ npe£-Ha3HaneHHtix paÓonHX BTyjioK nopuiHH BHyTpn HapyzHoro KOHTypaKOMneHCHpyeT ηθοοοοηοοτβ KOJieH κοηθηήβτογο Bajia. JÍBeocTaJtB-ηηθ óokobhs ποβθρχηοοτη KapTepa I npe^cTaBJLřWT coóok ftocTa-ΤΟΉΗΟ ÓOJIBIDHe UieJIH RJIR TeXOÓCJiyHHBaHHH 10. HhZHHH CTOpOHaKapTepa I npHHHMaeT cboÓosho BncffHHftnojKOH 5, pacnonozeHHHÍiΟΤΗΟΟΗΤθΗΒΗο! #ByXK0JieH*iaT0r0 Basa 2 CHMMBTpHHHO·Haxojuwiec^ c oóenx ctopoh Kopnyca BBHraTejiH 3 η βμθμιηθοηb pacnopHseHHH Han cTyneHnaTHMH uramnpaMH 4 cBOóojiHEie npo-.CTpaHCTBa BocnpHHHMaioT BcacKBaíoiime TJiyoiHTejiH inyMa 6, koto-pue Ο,ΚΗΟΒρθΜΘΗΗΟ CJiy&aT B03jyiHHKMH φΜΒΤρθΜΗ. C oóenx οτοροΗ προαοηβηοη och ycTaHOBKH b ηιεηθμ ynacTKepacnojioseHK οκηηθκοβηθ, ho npoTHBonojiosHiie, Tpyóooópa3HnenpoMexyTOHHne oxjiajpiTeJiH 7. To se c oóezx οτοροΗ, προτπΒο-hojiqjkho h napajmejiBHo' κ npoMe&yTóHHHM oxJiajffiTejiHM 7 Haxojwch b BepxHeM ynacTKe οβηοτηπηο HcnojmeHHKe nonoJKHTeJiBHiieoxjiawejm 8. - 5
BcacHBaOTie miyniHTejni myMa h oxjiawejin 7, 8 pacnojiosemj .οτΗοοιιτβΛΒΗο KOJieiraaToro Bajia οημμθτρηήηο. ycraHOBJíeinie kom- -npeccopHOK ycTaHOBKH ocymecrBJLaeTca onopaw 9, npejiycMOTpeH-hhx Ha Kpafix cTyneHaaTHx nowipoB 4. ΠρΗΗΙΒίΠ JieííCTBHH MaiUHHH:
Hepe3 BcacHBaw® rxyinHTejix inyMa 6, ojmoBpeMeHHO βηποχηθη-ηηθ b KanecTBe B03flymHHX φιυΒτροΒ, BcocaHHHS B03,nyx CBepxynocTynaer b-cooTBeTCZByioiííHe ropn3OHTaziBHo pacnojioaceHHEie cry-neHaarae φϊληηζφη 4, nepeKaHHBaercH lípu xo^e BcacKBaHHH ne-pe3 pacnojio&eHHHe b KJianaHHUX rojioBKax BcacHBaioiw miananHh nocTynaeT b KaMepa csaTM nepBoír CTynemí, c κοτορκχ nocTy-íiae? npn padoneu xo#e η βηχολητ aepe3 npejiycMOTpeHHHe c donaBHH3y y iwxHjpoB ο?ΒθροτιΐΗ. TenepB B03jiyx nepeKaHHBaeTca ne—pe3 pacnojioseHHHe c odenx οτοροΗ ycTanoBKu Tpydoodpa3HHe npo-MesyTOHHHe oxjiajwexií 7 κ pacnoJioJKeHHOg b προτηβοπολο&ηομ CTy-neHHaTOM nxjnwipe 4 OooTBercTByraneS BcacHBaiomefi οτοροΗθ bto-ροϋ cryneHK h bhxojtht nocJie csaTiiH οοοτβθτοτβθηηο Ha ;npyroxCTopone Toro cryneHHaToro ujuníHUpa 4 H3 ηθγο h nepeKaaiíBaeTCHaepe3 npejiycMOTpeHHHe c odeiix οτοροΗ ycTaHOBKX, pacnoxo&eHHHenapajmejiBHO κ npoMe&yTOHHHM oxxajwejiHM 7 .nonojiHiíTejiBHHe ox-jiawejni 8. Ccmma II odo3HanaeT KancmBHux npé£oxpaHHTejiBínyMa. ΚΟΠΟΛΉΘΗΗβΜ KOMHpeCCOpHOH yCTaHOBKH, COBJíaCHO H30dpeTefflW,nojiyHaercH, hto yMeHBinaercH οοηοβηβη imomanB bcoií KOHCTpyKipraH3-3a pacnoJio&eHHH sjreKTpoíBsraTeJiH Ha# KaprepoM,'hto-n3-3anepeMemeHHH κοχθη nps οπο3ητηομ ηοποχηθηηη HeH3desHHe μομθη-TH HHepiW HaXO&ÍITCH B BepTHKaJIBHOíí miOCOKOCTH B ΠρΟΤΗΒΟΠΟ-JIOSeHHOCTH K OdHHHOMy 0II03tfTH0My HCIIOJIHeroW C ropil3OHTa^BHOpacnOJIO&eHHHM KOJieHHaTHM BanOM, npH ΚΟΤΟΡΟΜ ΜΟΜΘΗΊΉ HHepUJíHseírcTByioT ropn3OHTaJiBHo, s, TaK napajuiexBHO κ ftyH^aweHTy hnpnHHMaeTCH oaeHB TpynHO. BcxeflCTBue τογο, hto npa yciaHOBKe,corjiacHO H3odperemro, μογλθητη HHepiw jieficTByior nepneHJwy-jiapHo Ha MOHTasHyio nxomajíB, T.e. nojiyaaeTCH bo3mokhoctb Hec-xosHoro, ynpyroro h desrayHRaweHTHoro ycTaHOBJíeHHH. - 6 -
Jlpyrne npeHMymecTBa coctoht b tom, hto socTuraeTcn nojman'ciiMMeTprreříocTL· Bceíí KOHcrpyKmm n ocb KOJieHnaroro BaňacraBOBHTCH ocbio neHTpa TmcecTH, hto no oTHomemra jiymneS jxoc-TynHocTK ABe doKOBHe noBepxHOCTU KapTepa ocTaHyTcn CBodoK-hhmh jyra oTBepcTH®, HeodxojuíMHX πριι μοητη&θ η TexodcJiysnBa-HHH, ΉΤΟ ÍDERHEH CTOpOHa KapTepa ÓOJIBIUe He ΠρΗΜΘΗΗΘΤΟΗ K3KMOHTaJKHan rwomanB·, ho w ycTaHOBJíeHHH cboóosho BucjrceS h,τθμ caMHM, HMeraneft óojiBmyio iuiomaSB pajmaiw nosnoHa, η ήτο,ΗβκοΗ'θπ, KÓMnaKTHHM κοποΛΗΗΤθΛθΜ co3£aioTC.H xopoiuse npejmo-cturKH ftJLH npocToro npesoxpaHHTejiH ot niyMa.
IlocJiejmee npeHMymecTBO aocTHraeTCH ocodeHHO τθμ, hto KOMnpec·copHan ycTaHOBKa coctoht H3 inecTn ολοκθηηηχ nocjieflOBaTejiBHOmi jipyr Ha# «apyroM ηοποληθηηηχ b BH£e Kyda KOHCTpyKTUBHHXy3JiOB OKHHaKOBofr βθλπηζην, πρπ κοτοροτ" ητϊκηκηθ y3Jm hjih £θ-TaJIH ΗΘ BHXOÍHT 3a KOHTyp KOHCTpyKIBÍH Η B OTíeJIBHOCTH HeonpeaeJiHiOT pa3Mepn no βηοοτθ, iunpnHe hjih jymHe ycTaHOBKH.BBHsy KOMnaKTHocTH ycTaHOBKH, paccMaTpiíBajiocB βηποληθηηθoxoiawe<7ie&, HcnojmeHHBíX ksk Ha3HBaeMHe oxjiasnTejm c Kopny-com H3 Tpyd. 3tot npnHiwn BunojiHeHHH oxjia^KTejieft He HBJíneT-cn npeKMeTOM H3odpeTeHnn, ho ero Heodxojnn-w paccwiaTpHBaTBjyin KOHiíemxHH Bcen KOHCTpyKiwt, noTOMy hto noJiynaiOTCH Tpyd-narae ox^ajíHTejiH, κοτορκβ mojkho pacnojtaraTB Ha óokobhx no-BepXHOCTHX yCTaHOBKH C SKOHOMHefi npOCTpaHCTBa. TaKHM·0Ópa30MnojiynaeTcn HamwEHoe, οΗΜΜβτρηηΗοβ h oósopHoe pacnojioHemieannapaTOB, κοτορ.οθ ne yBeJummaeT odiiíxe pa3MepH η ηηκθκημodpa3OM He 3aTpy^HHeT socTymiocTB κ npiiBOAy h KnananaM.OdHHHO nacTo οτ^θλβηο ycTaHOBJíeHHue jíonojiHHTejiBHiie oxjiajui-Tejin hbjihiotch 3AecB nocTOHHHO HHTerpupyeMoS nacTBio ycraHOB—KU. 7
ΦΟΡΡΜΑ Κ30ΕΡΕΤΕΗΗΗ 1. J&yxcTyneiniaTaH, jtByxííHJníHAPOBaH nopniHeBan KOMnpeccopHaHycTaHOBKa c βοληηημ oxjiasweHiíeM b οπο3ητηομ HcnojmeHim c ζκφφθρβΗίχιιευίΒΗΗΜ iuyHsepoM H cBepxy pacnoJio&eHHHMΘΛΘΚΤροπρΗΒΟπΟΜ, OTJDIHaiOD}aHCH TOM, HTO KOJieHHaTHft B3JI . (2)pacnojiaraeTCH b KapTepe (I) BspniKajiBHo, cboóojoío bhch-hhe hojwoh (5) - Ha hhshsS ciopoHe KapTepa (I) η οημμθτρηηho κ KOJieHHaTOMy Basy (2), a noxmopKa (9) KOMnpeccopHon ,ycTaHOBKH ocyiqecTBJíHeTCH Ha Kpanx cryneHnaroro nopciHH (4). 2. IIopniHeBaH KOMnpeccopHaa ycTaHOBKa no nyHKTy I, OTJDínaio-iqaacH τθμ, hto BcacHBawrií rnymuTenB myMa (6)‘’h oxjiajm-T6Jm (7, 8) pacnojiarasTCH οημμθτρμήηο οτηοοητθλβηο ochKOJieHnaToro Bajia.
AHHQTAW13 Η3θόρβΤθΗΗθ KacaeTCH íByxGTyneHHaToí?, ^ByxuHJniHípoBOE nop-HIHCBOÍí KOMnpeCCOpHOK yCTaHOBKH B 0Π03ΗΤΗ0Μ HCÍIOJIHSHHII COCBepxy paCHOJIOKeHHHM θ-ΠθΚΤρΟΠρΖΒΟβΟΜ.
UeJIL· Η300ρθΤβΗΉΗ COCTOHT· B TOM, HTOÓH C03HaTL ΠθρΐΙ1ΗΘΒ3Π0KOMnpeccopHyio ycTaHOBKy b οπο3ητηομ HcnojmeHHH KOMnaKTHoΗ ΟΗΜΜΘΤρΗΗΗΟ. 3ana^a Η300ρθΤΘΗΠΗ COCTOHT B TOM, HTOÓHCfleJiaTL ΗΤξθΗΤΗΉΗΗΜ OCL KOJieHHaTOrO BaJia C .OCLH IjeHrpa THjEOCTHBceíí KOHCTpyKiw.
CoiuiacHO H3oópeTeHHio sahana pemaeTCH τθμ, hto KOJieíraaraí! Báji pacnoJiaraeTca b KapTepe, cboóosho bhhchhh ποζκοη - Haηπηηθη οτοροΗΘ KapTepa η οημμθτρηηηο k KOJieiraaTOMy Bajiy,a nojinopKa KOMnpeccopHon ycTaHOBKH ocymecTBJLHeTCH Ha KpanxCTyneiraaToro nopniHH.
Claims (2)
- Předmět vynálezu1. Pístová kompresorová, dvoustupňová, dvouválcová stanices vodním· chlazením v protilehlém provedení s diferenciál-ním plunžrem a shora umístěným elektrickým pohonem, vyzna-čena tím, že klikový hřídel (2) je uložen v karteru (1)vertikálně, volně zavěšená vana (5) se nalézá na dolnístraně karteru (1), symetricky ke klikovému hřídeli (2),a podpěra (9) kompresorové stanice je umístěna na koncíchstupňovitého pístu (4).
- 2. Pístová kompresorová stanice podle hodu 1, vyznačujícíse tím, že tlumič hluku sání (6) a chladiče (7, 8) jsouumístěny symetricky vzhledem k ose klikového hřídele. 4 výkresy
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD78208649A DD147787A3 (de) | 1978-10-25 | 1978-10-25 | Hubkolbenverdichter-anlage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS231351B1 true CS231351B1 (en) | 1984-11-19 |
Family
ID=5514994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS796568A CS231351B1 (en) | 1978-10-25 | 1979-09-27 | Piston compressor plant |
Country Status (6)
| Country | Link |
|---|---|
| BG (1) | BG33239A1 (cs) |
| CS (1) | CS231351B1 (cs) |
| DD (1) | DD147787A3 (cs) |
| DE (1) | DE2939298A1 (cs) |
| IT (1) | IT7950637A0 (cs) |
| PL (1) | PL122668B1 (cs) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3032518C2 (de) * | 1980-08-29 | 1993-12-23 | Duerr Dental Gmbh Co Kg | Ölfreier Verdichter |
| IT8153068U1 (it) * | 1981-03-31 | 1982-10-01 | Grenco Spa | Gruppo moto-compressore d'aria |
| US5482443A (en) * | 1992-12-21 | 1996-01-09 | Commonwealth Scientific And Industrial Research Organization | Multistage vacuum pump |
| DE60100626T2 (de) * | 2001-06-13 | 2004-06-24 | Giuseppe Sette | Verdichteraggregat für Kraftfahrzeuge |
| AT9916U1 (de) | 2006-08-16 | 2008-05-15 | Leobersdorfer Maschf | Mehrstufiger verdichter |
| CN203648773U (zh) * | 2013-11-18 | 2014-06-18 | 李名轩 | 以数个汽缸组分隔进出气口的雾化器 |
-
1978
- 1978-10-25 DD DD78208649A patent/DD147787A3/de not_active IP Right Cessation
-
1979
- 1979-09-27 BG BG7944972A patent/BG33239A1/xx unknown
- 1979-09-27 CS CS796568A patent/CS231351B1/cs unknown
- 1979-09-28 DE DE19792939298 patent/DE2939298A1/de not_active Ceased
- 1979-10-22 IT IT7950637A patent/IT7950637A0/it unknown
- 1979-10-23 PL PL1979219157A patent/PL122668B1/pl unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PL122668B1 (en) | 1982-08-31 |
| IT7950637A0 (it) | 1979-10-22 |
| DD147787A3 (de) | 1981-04-22 |
| BG33239A1 (en) | 1983-01-14 |
| DE2939298A1 (de) | 1980-09-11 |
| PL219157A1 (cs) | 1980-07-14 |
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