LV12759B - Grozāma uzmava - Google Patents

Grozāma uzmava Download PDF

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Publication number
LV12759B
LV12759B LVP-01-85A LV010085A LV12759B LV 12759 B LV12759 B LV 12759B LV 010085 A LV010085 A LV 010085A LV 12759 B LV12759 B LV 12759B
Authority
LV
Latvia
Prior art keywords
cover
central shaft
radial
swivel joint
plain bearing
Prior art date
Application number
LVP-01-85A
Other languages
English (en)
Other versions
LV12759A (lv
Inventor
Vilis DĀRZNIEKS
Andris MĀRTINSONS
Original Assignee
Baltrotors, Sia
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 Baltrotors, Sia filed Critical Baltrotors, Sia
Priority to LVP-01-85A priority Critical patent/LV12759B/lv
Publication of LV12759A publication Critical patent/LV12759A/lv
Priority to PCT/LV2002/000003 priority patent/WO2002097316A1/en
Publication of LV12759B publication Critical patent/LV12759B/lv

Links

Classifications

    • 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
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00Adjustable joints, Joints allowing movement
    • F16L27/08Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
    • F16L27/0804Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another
    • F16L27/0808Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation
    • F16L27/0824Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation with ball or roller bearings
    • F16L27/0832Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation with ball or roller bearings having axial bearings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Joints Allowing Movement (AREA)

Description

-1- LV 12759 ΠΟΒΟΡΟΤΗΑΗ ΜΥΦΤΑ H3o6pereHHe othochtch k rHflpaBJiHHecKHM ycrpoHCTBaM, a hmchho, nOBOpOTHbl Μ ΜγφΤΒΜ, πρΗΜβΗΒβΜΜΧ JSflSl COeAHHeHHa UIJiaHrOB BbICOKOrO ΑΒΒϋβΗΗΒ B rHflpaBJIHHeCKHX yCTpOHCTBaX, n03B0JWK)IIļHX OCymeCTBHTb ΠΟΒΟρΟΤ uiJiaHroB oTHOCHTejibHo apyr Apyra h npe,noxpaHHTb hx ot CKpy4HBaHHa. 5 H3BecTHa KOHCTpyKUHa ποΒοροτΗοίί ΜγφτΜ, HanpHMep, no KaTajiory Slangbolaget AB φηρΜω "TĒMA", IIIsenHa, KOTopaa coctoht H3 ueHTpanbHoro Bana, Ha κοτοροΜ 3aKperuieHa raifrca ann npncoeaHHeHHa uiJiaHra c oahoh CTopoHbi, h Kopnyca, b κοτοροΜ MoxceT BpamaTbca stot Ban η κοτορωκ ΗΜββτ npHcoeaHHHTejibHbie pa3Mepbi pjisi mnaHra, c flpyroii οτοροΗω. H3BecrHaa 10 noBopoTHaa Μγφτ8 oOnaaaeT tbkhm He^ocraTKOM, hto npn nponycKaHHH nepe3 Myφτy rHjļpaBJiHHecKH mchakocth πολ AaejieHHeM, aKCHajibHyio Harpy3Ky BoenpHHHMaeT onopa cKOJibaceHHa, BbinojiHeHHaa b bhao 6ypraKa Ha ueHTpajībHOM Bajiy h onopHoit nOBepxHOCTbio Ha Kopnyce Μγφτω. Πρκ 3tom CHJIbl, B03HHKaK)mHe npH ΤρβΗΗΗ OflHOH ΠΟΒερΧΗΟΟΤΗ OTHOCHTCbHO flpyrOH, 15 MOryT npeBblinaTb KpyTaiHHH ΜΟΜβΗΤ, C03AaeaeMbIH OT CKpyMHBaHHfl UIJiaHTOB, h \^Ta He BbinojiHaeT CBoefi Φυηκηηη, τ. e. He ocymecTBJiaerca ποΒοροτ ueHTpajībHoro Bana OTHOCHTCJībHO KOpnyca. Πο 3toh ace npHHHHe ΜγφτΒ He MoaceT paāoTaTb πρκ bhcokhx AaBJieHHax nopa;uca 30 MPa, κοτοροβ cTaHOBHTca ocHOBHbiM CTaHflapTHbiM AaBJieHHeM, npHMeHaeMbiM b coepeMeHHbix 20 ycTpoficTBax. H3BecTHa TaKace KOHcrpyKUHa ποΒοροτΗοίί Μγφτω no KaTajiory "Indexator" (προτοτΗπ). H3BecTHaa Μγφτ3 coctoht H3 ueHTpanbHOH flerajiH Μγφτω, KOpnyca H KpblUlKH. OcHOBHbiM 3JieMeHT0M, BOCnpHHHMaiOIHHM aKCHaJIbHyiO Harpy3xy ot rnnpaBJiHHecKoro aaBJieHHa, cnyacHT uiapHKOBaa onopa, 25 BbinojieHHaa b KpyroBOH KaHaBKe Ha ochobhoh ueHTpanbHOH aeTariH ΜγφτΗ, b pe3ynbTaTe Hero npH MHoroKpaTHOM ποΒοροτβ inapHKOB b KpyroBofi KaHaBKe 3toh neTajiH h npH bucokom aaBJieHHH nopaflKa 30 MPa προκεχοΛΗτ HHTeHCHBHbiH H3HOC MeTanna, ero paccnaHBaHHe h 3aioiHHHBaHHe MexaHH3Ma. Πο 3toh >κε npHMHHe Ha6jnojīaeTca βηχολ H3 crpoa Μγφτω οτ paaHanbHOH 30 Harpy3KH, nocKOJibKO b H3BecTHOH Μγφτβ npHMeHaeTca HrojibnaTbifi πολιιιηπηηκ, -2- r«e HIOJIKH HenoepeACTBeHHO KOHTaKTHpyK)T C LļHJIHHApHHeCKOH nOBepXHOCTblO 3TOH >Κβ OCHOBHOH AeTaJIH Η B CJiyHae HeAOCTaTOHHOH TBepflOCTH I10BepXH0CTH npoHcxoflHT ee pa3pymeHHe. Iļejibio Η3θ6ρετεΗΗ« aBJiaeTCJi noBbiuieHHe cpoica cjiy)K6bi h yjiymueHHH 5 pa6oTocnoco6HOCTH Μγφτω . Jļjlfl AOCTHHCeHHfl nOCTaBJieHHOŪ Iļ&JIH B ΠΟΒΟρΟΤΗΟΗ Μγφτβ, ΠρΗΜβΗΛβΜΟΗ AJIfl οοβΛΗΗβΗΗΛ uiJiaHroB BbicoKoro AaBjieHHa b rH^paBJiHqecKHx ycTpoHCTBax, coaep)KameH Kopnyc, κρωιιικγ c peHTpajībHbiM οτΒβρστΗβΜ, ΒΗγτρβΗΗΗΗ kohču κοτοροίί HanpaBJieH b CTopoHy nojiocTH Kopnyca, ueHTpajībHbifi 10 BaJI, BMOHTHpOBaHHblH B IļeHTpaJIbHOM OTBepCTHH KpblUIKH, H 3JieMCHT AJIJI BOCnpHBTHH aKCHaJIbHOH Harpy3KH, COrJiaCHO Η3θ6ρβΤβΗΗΚ) 3JieMeHT ŪJIZ BOCnpHaTHH aKCHaJIbHOH Harpy3KH BbinOJIHeH B ΒΗΛβ pa/IHaJIbHO-ynopHOrO nojuiiHnHHKa, ycTaHOBjieHHoro y BHyTpeHHero KOHija KpbiiiiKH b nojiocTH Kopnyca h onnpaioiHerocH Ha onopy, cocTOJHuyio H3 AHCKa η AByx nojiyKOJieu, 15 BCTaBjieHHbix HenoaBHHCHO b KpyroByio KaHaBKy ueHTpajībHoro Bajia c B03M03KH0CTbI0 CaMOyCTaHOBKH nOflUIHnHHKa, a B IjeHTpaJIbHOM OTBepCTHH KpbiiiiKH npn B3aHM0CBH3H c ueHTpajībHbiM BajiOM 3aKpenjieH ΠΟΛΙΙΙΗΠΗΗΚ cKOJib^eHH« ņjm BocnpnaTHa paAHajībHOH Harpy3KH, BbinojiHeHHbiH H3 BbicoKonpOHHOH 6pOH3bi h CHa6>KeHHbiH yniy6jieHHflMH jjflfi y^ep5KaHHa CMa3KH. 20 Ū3o6peTeHHe noHCH«eTca npHJiojKeHHbiM nepTejKOM, Ha κοτοροΜ H3o6paxceHa npe/uiaraeMafl noBopoTHaa ΜγφτΒ b nonepenHOM pa3pe3e.
ripejuiaraeMaji noBopoTHaa νιγφτΑ coctoht H3 cjienyiomHX οοηοβημχ MacTen: ueHTpanbHbiH Baji 1, KOpnyc 2, KpbiiUKa 3 c ueHTpajībHbiM οτΒβρστΗβΜ. ΒΗγτρβΗΗΗΗ KOHeiļ KpbiuiKH 3 pa3MemeH b HanpaBJieHHH nojiocTH Kopnyca 2. 25 Ha KOHuax ueHTpajībHoro Bajia 1 h Kopnyca 2 BbinojiHeHbi cooTBeTCTByioinHe npHcoeaHHHTejibHbie Mecra, Heo6xoflHMbie ajih πο,ακιποΗβΗΗΗ οληογο uuiaHra κ eajiy 1, a BToporo uuiaHra κ Kopnycy 2. KpbiiUKa 3, nepe3 ueHTpajībHoe OTBepcTne κοτοροίί προχοΛΗΤ ueHpajībHbiH Baji 1 η β κοτοργιο 3anpeccoBaH noAiiiHHHK 4 cKOJibMceHHfl, 3aBopoHeHa no pe3b6e b Kopnyc 2. Ποιιιηπηηκ 4 30 Η3ΓΟΤΟΒΛβΗ H3 BbICOKOnpOHHOH 6pOH3bI H CHa6)KeH CneUHajībHbIMH yrjry6jieHHiiMH (He H3o6paxceHbi) ķjm yaep>KaHHn cMa3KH, hto C03Aaer 6jiaronpHHTHbie ycnoBH« bo BpeMH 3KcnjiyaTauHH h HCKJiioHaeT B03Mo>KHOCTb noiiBJieHHa 3aAHpoB npn ποΒοροτβ Bajia 1 β ποαιιιηπηηκο 4. Ha kohuc KpbiiiJKH 3 b nojiocTH Kopnyca 2 ycraHOBJieH paAHajibHO-ynopHbiH ποαιιιηπηηκ 5, KOTOpbIH CBOHM HHJKHHM KOJĪblJOM OnHpaeTCH Ha CneiļHaJIbHO BbinOJIHeHHyiO -3- LV 12759 onopy, cocToamyio H3 AHCKa 6, κοτορωίί b cboio onepeAb paflHycHO0 βμτοηκοη oriHpaeTca Ha ABa Kpyrjibix nojiyKOJibiļa 7, BcraBJieHHbix b KpyroByio xaHaBKy ueHipajībHoro eajia 1. He6xoAHMbiH npejBapHTejibHbifi HaTiir πολιιιηπηηκβ 5 c ero οΛΗΟΒρβΜβΗΗΟΗ caMoycTaHOBKOH o6ecnenHBaerca 6jiaroflapa paAHycHbiM 5 OnOpHbIM nOBepXHOCTHM nOJiyKOJieiļ 7 H AHCKa 6 npH 3aBOpaHHBaHHH KpbllUKH 3 ao ynopa b ποαιηηπηηκ 5. B Kopnyce 2 BcraBAeHO yruioTHeHHe 8 paflHanbHoro THna, BbiAepacHBaiomee BbicoKoe jļaBJieHHe ao 40 MPa. Mexcay ueHTpajībHbiM eajiOM 1 h KpbiiuKOH 3 ycTaHOBjieHo pe3HHOBoe KOJibuo 9, npeaoxpaHHiomee ot nona^aHM» b My<ļ)Ty nbiJiH h rp«3H» a KOJibuo 10 «BJinerca 10 yriJ10THHTeJIbHbIM ΒΑβΜβΗΤΟΜ npOTHB OTBOpaHHBaHHH flJI« KpbllUKH 3.
Pa6oTa ποΒοροτΗοίί MyφτbI προκςχοΑΗΤ cueuyiomHM o6pa30M: nocne 3aKpenueHHB οαηογο uuiaHra Ha KOHiļe ueHTpajībHoro Bajia 1, a BToporo uuiaHra b ΓΗβ3Αβ Kopnyca 2, uepe3 My<ļ)Ty noAaerca rHApaBJiHHecKoe AaBJieHHe b cooTBeTCTByiomHe HcnojiHHTenbHbie ycipoHCTBa rHApocHCTeMbi (He 15 H3o6paxceHbi). Πρκ 3tom Ha LļeHTpanbHbiH Baji 1 h Kopnyc 2 HaHHHaer B03AeHCTB0BaTb aKCHajībHaBa CHjia, BboeaHHaa pa3HOCTbio προχοΑΗωχ h ynAOTHHTejibHbix AHaMeTpoB Baua 1 h Kopnyca 2. Ecjih b rHApocHCTeMe npOHCXOAHT OTHOCHTeJIbHblH nOBOpOT LUJiaHrOB, OAHOBpeMeHHO UeHTpaJIbHblH Baji 1 noBopaHHBaeTca oTHOCHTejibHO Kopnyca 2, AHKBHAHpya TaKHM o6pa30M 20 HaMenaiomeecH hx CKpyHHBaHHe. IIpeAJiaraeMaa noBOpOTaa My<ļ)Ta Μωκβτ 6biTb η3ΓΟΤοβα6ηα npOMbiiuueHHbiM cnocoOoM h npHMeHeHa Ķīia nouaHH AaBJieHHH b cooTBeTCTByioiijHe rHApaBJiHHecKHe ycTpOHCTBa. 4- LV 12759 ΦΟΡΜΥίΙΑ Μ305ΡΕΤΕΗΜΛ l. IIoBopoTHafl Μγφτα juia coeAHHeHHa uuiaHroB BbicoKoro uaBJieHHa b rnapaBJiHHecKHX ycTpOHCTBax, coflepacamaa Kopnyc, KpbiuiKy c ueHTpajībHbiM OTBepCTHeM, BHjrrpeHHHH KOHeu κοτοροκ HanpaBJieH b cropoHy nojiocTH Kopnyca, ueHTpajībHbiii eaji, βμοητηροββηημη b ueHTpajībHOM 5 OTBepCTHH KpblUIKH, H 3JieMeHT AJia BOCnpHHTHa aKCHaJIbHOH Harpy3KH, OTJiHMaioiiļaaca τβΜ, mto c uejibio noBbimeHHa cpoKa cjiyac6bi h yjiyHuieHHH pa6oTOcnoco6HOCTH, ajieMeHT /yia BoenpHaTHa aKCHajībHOH Harpy3KH BbinojiHeH b BH^e paflHajibHo-ynopHoro no^uiHriHHKa, ycraHOBJieHHoro y BHyTpeHHcro KOHua κρωυικπ b nojiocTH Kopnyca h 10 onnpaiomeroca Ha onopy, cocroaiiiyio H3 AHCKa h AByx no.nyKO.jieu, BCTaBJieHHbix HenoflBHacHo b KpyroByK> KaHaBKy ueHTpajībHoro Bana c βο3μο>κηοοπ>κ) caMoycraHOBKH noAiiiHnHHKa. 2. IIoBopoTHaa Myφτa no nyHKTy 1, OTJiHHaioiuaaca τβΜ, hto c Uejibio co3flaHHH 6jiaronpHHTHbix ycjioBHft bo BpeMa 3KcruiyaTauHH h 15 HCKaiOHeHHa bo3Mohchocth noaBJieHHa 3auHpoB h 3aKJiHHHBaHHa MexaHH3Ma, b UeHTpajībHOM OTBepCTHH KpblUIKH ΠρΗ B3aHMOCBa3H C UempaJIbHblM BajIOM 3aKpenjieH ποαηιηπηηκ CKOJibaceHHa &ria BocnpnaTHa paflHajībHOH Harpy3KH, BbinoJiHeHHbiH H3 BbicpKonpOMHOH 6poH3bi h CHaāaceHHbifi yrjiy6jieHHaMH Ana yuepacaHHa CMa3KH. -5- -5- LV 12759
AHOTAUJM H3o6peTeHHe othochtca k rHflpaBJiHHecKHM ycTpoficTBaM, a HMeHHO, nOBOpOTHbIM Μ>'φΤ3Μ, ΓφΗΜβΗΑβΜωΧ JļSlSi ΟΟβΑΗΗβΗΗΗ ΙΙΙΑΒΗΓΟΒ BbICOKOrO flaBJieHH» b rHApaBJiHHecKHx ycTpo0CTBax, πο3βοαβιοιαηχ ocymecTBHTb ποΒοροτ uuiaHroB OTHOcHTejibHO Apyr Apyra h npeAOxpaHHTb hx ot cicpy ηηββηηη. LJeiibK» Η3θ5ρβτβΗΗΛ BBJiAercA noBbiuieHHe cpoKa cjiyxc6bi h yjiyHiiieHHfl pa6oTOcnoco6HocTH MyφτbI. ĪIpeAJiaraeMaa noBopoTHaa Myφτa coctoht H3 ueHTpajībHoro eajia (1), Kopnyca (2) h KpbiuiKH (3) c ueHTpajībHbiM OTBepcraeM, B KOTOpOM BMOTHpOBaH UeHpaJIbHblH BajI (1). BHyTpeHHHH KOHeiļ KpblUlKH 3 HanpaBJieH b CTopoHy nojiocTH KOpnyca (2). Ha kohuc κρωηικΗ (3) b nojiocra Kopnyca (2) ycTaHOBJicH paAHajibHO-ynopHbiH ποαιπηπηηκ (5), κοτορΜΗ cbohm hhhchhm KOJibiļOM onHpaercji Ha cneuHajībHo BbinojiHeHHyK) onopy, cocToamyio H3 AHCKa (6), κοτορΜΗ b cbok) onepeAb paAHycHOH BbiTOHKOH onHpaerca Ha ABa Kpyrjibix noAyKOAbua (7), BCTaBJieHHbix b KpyroByio KaHaBKy ueHTpajībHoro BaAa (1). KpbiuiKa (3), Mepe3 ueHTpanbHoe OTBepcrae κοτοροκ προχοΑΗτ iļeHpaAbHbiH Baji (1) h b KOTOpyio 3anpeccoBaH ποαπιηηηκ (4) CKOJibMceHH», 3aBoponeHa no pe3b6e b Kopnyc 2. Ποπιηπηηκ cmjībaceHHJi (4) Η3Γ0Τ0ΒπβΗ H3 BbicoKonpoMHOH 6poH3bi h CHaāaceH cneuHajībHbiMH yrjiy6neHHiiMH asm yAepx<aHHB CMa3KH. y craHOB JieHHe noAUiHnHHKa CKOJibxceHHH,
BocnpHHHMaiomero paAHaAbHyio Harpy3Ky, co3AaeT 6AaronpHHTHbie ycjioBHfl bo BpeMA 3KCnAyaTaUHH H HCKUIOHaeT B03M0XCH0CTb nOBBACHHfl 33AHpOB H 3aKAHHHBaHHB Μ6ΧΒΗΗ3ΜΒ.

Claims (2)

  1. LV 12759 IZGUDROJUMA FORMULA 1. Grozāma uzmava augstspiediena šļūteņu savienošanai hidrauliskās iekārtās, kas satur korpusu, vāku ar centrālo caurumu, kura iekšējais gals vērsts korpusa iedobuma virzienā, vāka centrālājā caurumā iemontētu centrālo vārpstu un elementu aksiālās slodzes uzņemšanai, kas atšķiras ar to, 5 ka ar mērķi pagarināt kalpošanas ilgumu un uzlabot tās darbspējas, elements aksiālās slodzes uzņemšanai izveidots radiālā atturgultņa veidā, kas izvietots korpusa iedobumā pie vāka iekšējā gala un balstās uz atbalsta, kas sastāv no diska un diviem pusriņķiem, kuri nekustīgi iemontēti centrālās vārpstas apļveida gropē ar gultņa pašiestatīšanās iespēju.
  2. 2. Grozāma uzmava saskaņā ar 1. punktu, kas atšķiras ar to, ka ar mērķi radīt labvēlīgus eksplutācijas apstākļus un novērst ierāvumu rašanās un mehānisma ieķīlēšanās iespējamību, vāka centrālajā caurumā saskarē ar centrālo vārpstu ir nostiprināts slīdgultnis radiālās slodzes uzņemšanai, kas izgatavots no izturīgas bronzas un izveidots ar padziļinājumiem smērvielas 15 saturēšanai.
LVP-01-85A 2001-06-01 2001-06-01 Grozāma uzmava LV12759B (lv)

Priority Applications (2)

Application Number Priority Date Filing Date Title
LVP-01-85A LV12759B (lv) 2001-06-01 2001-06-01 Grozāma uzmava
PCT/LV2002/000003 WO2002097316A1 (en) 2001-06-01 2002-02-15 Swivel joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LVP-01-85A LV12759B (lv) 2001-06-01 2001-06-01 Grozāma uzmava

Publications (2)

Publication Number Publication Date
LV12759A LV12759A (lv) 2001-11-20
LV12759B true LV12759B (lv) 2002-02-20

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ID=19735276

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Application Number Title Priority Date Filing Date
LVP-01-85A LV12759B (lv) 2001-06-01 2001-06-01 Grozāma uzmava

Country Status (2)

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LV (1) LV12759B (lv)
WO (1) WO2002097316A1 (lv)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104964116A (zh) * 2015-07-11 2015-10-07 苏州华达仪器设备有限公司 一种管道连接头结构

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE528047C2 (sv) * 2003-03-28 2006-08-15 Weo Hydraulic Ab Svivel
SE542480C2 (en) 2017-09-08 2020-05-19 Epiroc Rock Drills Ab Mining or construction vehicle enclosing a conduit arrangement
SE541217C2 (en) 2017-09-08 2019-05-07 Epiroc Rock Drills Ab Mining or construction vehicle
KR102087367B1 (ko) * 2018-03-30 2020-03-10 주식회사 피에스하이텍 스위블 조인트

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3177012A (en) * 1960-04-04 1965-04-06 Fmc Corp Swivel pipe joint and means for preventing freezing thereof
FR1408620A (fr) * 1964-09-23 1965-08-13 Super Oil Seals & Gaskets Ltd Raccord tournant étanche utilisable dans un système hydraulique
US4229024A (en) * 1978-08-25 1980-10-21 Dover Corporation Swivel connector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104964116A (zh) * 2015-07-11 2015-10-07 苏州华达仪器设备有限公司 一种管道连接头结构

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Publication number Publication date
WO2002097316A1 (en) 2002-12-05
LV12759A (lv) 2001-11-20

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