baber/WOPTO huggingface dataset:
Patent SG-11201806893S-A (SG)
Title: Lock mechanism
Inventor: ÖSTBERG JUHANA
IPC: B65D90/00
Filed: 2017-03-17
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date ill Hu omits Hot o 01101110 1101101101110 011 (10) International Publication Number WO 2017/187009 Al 02 November 2017 (02.11.2017) WIP0 I PCT (51) International Patent Classification: TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, B65D 90/00 (2006.01) B63B 25/00 (2006.01) KM, ML, MR, NE, SN, TD, TG). B60P 7/13 (2006.01) B61D 3/20 (2006.01) (21) International Application Number: PCT/FI2017/050183 Declarations under Rule 4.17: as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(ii)) (22) International Filing Date: 17 March 2017 (17.03.2017) (25) Filing Language: Finnish (26) Publication Language: English (30) Priority Data: 20165366 28 April 2016 (28.04.2016) FI (71) Applicant: MACGREGOR FINLAND OY [FI/FI]; Hal- limestarinkatu 6, FI-20780 Kaarina (FI). (72) Inventor: OSTBERG, Juhana; Puutarhakatu 7 a C 16, FI-20100 Turku (FI). (74) Agent: HEINANEN OY; Ayritie 8 D, FI-01510 Vantaa (FI). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, Published: — with international search report (Art. 21(3)) (54) Title: LOCK MECHANISM (57) : Lock mechanism of a twistlock (1) or of some other such fitting for fas- tening a twistlock or other fitting to a counterpart (5), such as to a corner casting (5) of a container or to a container foundation fixed to a hatch cover of a ship, which twistlock (1) 9- or other fitting comprises a body (2). The invention is implemented in such a way that the lock mechanism comprises a locking part (3), which can be moved in relation to the body (2) between a locking position, in which twisting of the twistlock (1) or other fitting in the counterpart (5) is prevented, and an open position, in which twisting of the twistlock (1) or other fitting in the counterpart (5) is possible. Fi W O 20 17 / 187 009 Al
Patent SG-11201808605W-A (SG)
Title: Apparatus for producing water-absorbing resin particles
Inventor: KOTAKE MASATO
IPC: B01J20/30
Filed: 2017-02-16
Abstract: APPARATUSFOR PRODUCING WATER-ABSORBING RESIN PARTICLES Fig.
Patent SG-11201809202X-A (SG)
Title: Methods and compositions for the treatment of degenerate bone
Inventor: AHN EDWARD
IPC: A61L27/58
Filed: 2017-04-26
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 02 November 2017 (02.11.2017) WI P0 I PC T Iiiimmomitia Hot omolioimomlln °nom mil (10) International Publication Number WO 2017/189733 Al (51) International Patent Classification: A61L 27/46 (2006.01) A61L 27/58 (2006.01) A61L 27/52 (2006.01) A61L 24/00 (2006.01) A61L 27/56 (2006.01) (21) International Application Number: PCT/US2017/029651 (22) International Filing Date: 26 April 2017 (26.04.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/328,313 27 April 2016 (27.04.2016) US (71) Applicant: ANIKA THERAPEUTICS, INC. [US/US]; 32 Wiggins Avenue, Bedford, MA 01730 (US). (72) Inventors; and (71) Applicants: AHN, Edward, S. [US/US]; 175 Dedham Street, Dover, MA 02030 (US). LIN, Chia-En [US/US]; 98 Prescott Road, Concord, MA 01742 (US). WHITE, Colin, D. [GB/US]; 74 Oak Ridge Terrace, Lynnfield, MA 01940 (US). (74) Agent: SCOZZAFAVA, Mary, Rose et al.; Wilmer Cutler Pickering Hale and Don LLP, 60 State Street, Boston, MA 02109 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). W O 20 17 / 1897 33 Al (54) Title: METHODS AND COMPOSITIONS FOR THE TREATMENT OF DEGENERATE BONE (57) : The present disclosure relates to methods and compositions for the treatment of degenerate bone in a patient. In some embodiments, 101 the methods and compositions disclosed herein are useful in the treatment, prevention, or in delaying the progression of a bone disease linked to bone degeneration, such as osteoarthritis (\"OA\"), rheumatoid arthritis, and a vas- 6 cular necrosis FIG. 1 [Continued on next page] WO 2017/189733 Al MIDEDIMOMMIONMEMOMMOHEIIIIDERVOIMIE Published: with international search report (Art. 21(3)) before the expiration of the time limit for amending the claims and to be republished in the event of receipt of amendments (Rule 48.2(h))
Patent AT-403898-B (AT)
Title: Antiskid device for vehicle tyres
IPC: B60C27/14
Filed: 1996-03-15
Granted: 1998-06-25
Abstract: The antiskid device which closes automatically and makes opening easier consists in the fact that the antiskid element is closed automatically by merely moving the vehicle off, whereas it can be opened by pressing on an easily accessible lever 4. As a result, it is ensured that the antiskid element can be mounted and dismounted without difficulty and quickly. The antiskid device is a belt 11 which is provided with antiskid studs and at whose ends closure parts 2, 14 are located for automatically closing said belt. The belt 11 is held on the tyres 8 by means of clips 1 which are attached to it. In order to dismount the belt 11, an opening device 4 is provided, which can be actuated without difficulty by means of a lever which is located on the outside of the tyre 8. <IMAGE>
Patent AT-396918-B (AT)
Title: Switching device for the load-coupling device of a cable- operated crane carriage
IPC: B66C21/00
Filed: 1990-03-14
Granted: 1993-12-27
Abstract: A switching device for the load-coupling device of a cable-operated crane carriage for conveying loads has a wire clamp which clamps the traction wire 4 automatically by means of spring force. In order to release the traction-wire clamping 4, 10, 11, a switching mechanism is operated in such a way that a switching slider 66 can be moved from a travelling position of the cable-operated crane carriage with the clamping jaws 10, 11 closed, via a switching position into a clearance position and further into a position which completely releases the traction-wire clamping 4, 10, 11. The switching mechanism is completely encapsulated in the interior of the cable-operated crane carriage and is protected against damage by a sliding protective plate 33, as a result of which the crane carriage 6 is suitable for drag-line operation. The traction wire 4 can be spooled out forcibly with the aid of a return wire 5 and a load-hook spool-out device 37 arranged on the cable-operated crane carriage 6. <IMAGE>
Patent HU-190062-B (HU)
Inventor: ALBERT PETER
IPC: G10H1/06
Filed: 1983-02-03
Abstract: A találmányi bejelentésben az egymástól ± 1 -5 % relatív értékben eltérő frekvenciájú hanggenerátorok (la, lb, ...) kimenetei rendre ellenállások (2a, 2b, ,.,) egyik kivezetéseihez kapcsolódnak, az ellenállások másik kivezetései rendre kondenzátorok (4a, 4b, . ..) egyik kivezetéseihez kapcsolódnak, a kondenzátorok másik kivezetései rendre a hanggenerátorok földelőkívezetéseihez kapcsolódnak, a földelőkivezetések egymással össze vannak kötve. Az ellenállások és a kondenzátorok egymással összekapcsolt kivezetései rendre az egymástól elszigetelt, és egymással összesodort vezetékekre (3a, 3 b,...) vannak kapcsolva.  190062 -1-
Patent HU-189497-B (HU)
Inventor: CHUPP JOHN P
IPC: C07C233/88
Filed: 1981-03-18
Abstract: Die Erfindung betrifft eine Gruppe von N-Hydrocarbylox-methyl-2-halogenacetanilidverbindungen, Herbizidzubereitungen, welche diese Verbindungen als Wirkstoff besitzen, sowie Verfahren zur Anwendung dieser Herbizide in verschiedenen Nutzpflanzenkulturen, insbesondere Mais und Sojabohnen, aber auch anderen Kulturen wie z.B. Baumwolle,Erdnuessen, Raps, Buschbohnen,Weizen und sorghum. Die erfindungsgemaessen Herbizide sind besonders wirksam gegen schwer abzutoetende mehrjaehrige Unkraeuter wie Quecke und Cyperaceae, sie sind jedoch auch gegen einjaehrige Unkraeuter wirksam.
Patent HU-186849-B (HU)
Inventor: RATKOVICS FERENC
IPC: C02F1/52
Filed: 1982-03-26
Abstract: A találmány tárgya eljárás festékkel szennyezett folyadékok főleg ipari vizes és/vagy szennyvizek szilárd festékszemcse anyagának leválasztására szelektív koagulensekkel, amelynek során a szennyező festékanyagtól függő, a folyadék szennyező anyag tömegéhez viszonyítva 10-110 m/m% összmennyiségben egy vagy több különböző féinsót adagolnak. A találmány lényege abban van, hogy a szennyezett folyadékba a periódusos rendszer II. csoport 3,4, 5 periódusába, a III. csoport 3 periódusába és a Vili. csoport 4 periódusába tartozó legalább egyik eleme vízoldható fémsójának össztömegéhez viszonyítva 10-80 m/m% arányban C9-C22 szénatomszámú anion- és/vagy kationaktív, vagy nemionos tenzideket adagolnak, majd az ilymódon a folyadék felszínére felúsztatott szilárd festékanyagokat ismert módon eltávolitva a megtisztított folyadékot elvezetik. -1-
Patent YU-46525-B (YU)
Title: Mehanizam za otvaranje i zatvaranje registra
Inventor: SPASOJE KOSTIC
IPC: B42F1/00
Filed: 1986-05-26
Abstract: MEHANIZAM ZA OTVARANJE I ZATVARANJE REGISTRA, naznačen time, što je ugaoni zatvarač (1) zakovan na levoj polovini drvenog nosača (8), a opruga (3) sa raskovanim jezičkom (2) i graničnik (5) sa konusnim zapadačem (4) zakovani na desnoj polovini drvenog nosača (8) pri čemu su metalni ugaoni nosači (6) sa ručnim držačima (7) fiksirani na obe polovine drvenog nosača (8) iznad ugaonog zatvarača (1) i opruge (3).
Patent ZA-91176-B (ZA)
Title: Roman shade
Inventor: COLSON WENDELL B
IPC: E06B9/386
Filed: 1991-01-09
Abstract: An expandable and contractible shade member (1), comprising an assembly of an integral row of parallelly arranged generally tubular cells (2), one on top of the other, with the longitudinal cell axis transverse to the direction of expansion and contraction of the window shade, each cell comprising a top portion (7), a rear wall portion (8), a bottom portion (10) and a front wall portion (6), where the front wall flap portion (6) is freely hanging and defines a surface drooping downwardly from the top portion (7) at least to a juncture of said cell, with an immediately adjacent lower cell when said window shade is in the expanded state, the lower edge of said front wall flap portion being independent of said cell except at its junction with the top portion (7). <IMAGE>
Patent ZA-97447-B (ZA)
Title: A product and a method for its manufacturing.
Inventor: LUNDELL LARS-GUNNAR
IPC: E21B17/02
Filed: 1997-01-20
Abstract: A friction welded product for rock drilling and method for manufacturing thereof, the product including a first component (25) and a second component (22) of parent material joined by a friction weld (27). The components have a central inner passage (26) and both components are made from a steel having a chemical composition such that the hardness in the most tempered part of the heat affected zone close to the weld is at least the same as that of the core hardness of the rod. Further, the product exhibits normal hardness when cooled to room temperature subsequent to the friction welding thereby having a minimum core hardness at the heat affected zone above 390 HV1.
Patent AT-400451-B (AT)
Title: Paving stone with at least singularly angled-away side faces
IPC: E01C5/00
Filed: 1990-05-04
Granted: 1996-01-25
Abstract: Paving stone 1 with at least singularly angled-away side faces 2, 3, 4, 5, opposing side faces 2 and 3, 4 and 5 running parallel to one another in a convex or concave manner and a projecting rib 6 with a profile essentially in the form of a segment of a circle being formed in the angling-away region of each of the two convex side faces 3, 4, and a groove 7, assigned to the rib and of a slightly greater profile radius, being formed in the angling-away region of each of the two concave side faces 2, 5. To prevent damage, the length of each rib is made shorter than the height of the paving stone. <IMAGE>
Patent AT-396947-B (AT)
Title: Process for the preparation of crystals
Inventor: KRENN FRANZ
IPC: C30B7/00
Filed: 1992-05-21
Granted: 1993-12-27
Abstract: In a process for the preparation of crystals belonging to centrosymmetry class 32 and having the chemical total formula ABO4, where A originates from the group Ga, Al and B originates from the group P, As, from heated solutions of salts of group A in an acid or an acid mixture from the group H3PO4, H2SO4 and HCl, an acid concentration in the range from 3 to 8 mol/l is chosen, the growth temperature lying in the range from 100 to 135 degree C. In order to reduce the OH content, the crystal growth is kept below 400 micrometers per day, preferably below 250 micrometers.
Patent AT-392358-B (AT)
Title: Method and equipment for examining the rheological relationships in a flow of a fluid medium containing particles
IPC: G01N29/34
Filed: 1989-05-19
Granted: 1991-03-25
Abstract: The invention relates to a pulsed ultrasonic Doppler method and to equipment provided for carrying it out for examining the rheological relationships in a fluid flow 5 containing a large number of small particles, an average particle velocity being determined on the basis of the Doppler effect occurring during the back scatter of the sound from the particles. In order to obtain particularly effective information relating to particle agglomeration dependent on the degree of shear at precisely defined points in the flow 5, the invention provides that, in the evaluation, both a characteristic average frequency and a scattering factor are in each case determined or extracted, synchronously for the same volume region, from a number of Doppler frequency signal spectra each obtained from one and the same of the discrete volume regions of the particle flow 5, which are sampled step by step, and that, for each of the said volume regions, the average frequency obtained is used to determine an average velocity of the particles and, associated with this, the determined scattering factor is used in each case to determine the size and/or shape of the particles and/or particle aggregates in the same volume region, and that these mutually associated values are in each case fed to a storage and/or output unit 15 and are output by the latter, associated with one another, preferably in the form of particle-velocity and particle-size profiles. <IMAGE>
Patent AT-393589-B (AT)
Title: Fungicidal compositions
IPC: A01N43/653
Filed: 1984-04-20
Granted: 1991-11-11
Abstract: The invention relates to compositions for controlling phytopathogenic fungi and which comprise a compound of the formula I in which R, R', R'" and Ro have the meanings given in the claims. <IMAGE>
Patent AT-388166-B (AT)
Title: Process for the preparation of novel water-soluble carbohydrate derivatives
Inventor: GREBER GERHARD DIPL ING DR
IPC: C07H13/04
Filed: 1986-06-03
Granted: 1989-05-10
Abstract: A process for the preparation of novel water-soluble carbohydrate derivatives with radicals, linked via ester functions, of bioactive substances of the general formula I in which X1 is H, X, CH3, C2H5, CH2CH2OH, CH2CH(OH)CH3, CH2CH(OH)CH2OH or a radical -A or alpha- or beta-4-bonded glucose residue and, in the case of monosaccharides, not more than one radical X and, in the case of disaccharides, not more than three radicals X are the bioactive substance radicals 2-(3- benzoylphenyl)propionyl, 2-propylvaleryl, 2-(6-methoxy-2- naphthyl)propionyl, 1-(4-chlorobenzoyl)-5-methoxy-2- methylindole-3-acetyl and 2-(2,4- dichlorophenoxy)propionyl, and the other radicals X are hydrogen, comprises reacting the bioactive substance compounds corresponding to the above-defined radical X, in the form of the free carboxylic acid or its acid derivatives, in particular acid chlorides, with a carbohydrate of the general formula II in which X'1 is H, CH3, C2H5, CH2CH2OH, CH2CH(OH)CH3, CH2CH(OH)CH2OH or a radical -A' or alpha- or beta-4-bonded glucose residue. <IMAGE>
Patent AT-401288-B (AT)
IPC: F23D11/40
Filed: 1991-10-14
Granted: 1996-07-25
Abstract: A mixing device for oil burners having a mixing pipe (1) with a front-side passage opening (3), which tapers to the front end. There are provided an annular baffle plate (10), arranged in front of the passage (3) in the direction of flow, with radial slots (12) and, situated in front of this in the front region, a frustoconical inner pipe (7) with a rear closure wall (8) and a front passage (15). Situated in the inner pipe (7) is a pressure pulveriser nozzle (4) and an ignition electrode (9). The inner pipe (7) bears with its mouth against the baffle plate (10) and has at the rear a closure wall (8). <IMAGE>
Patent AT-405550-B (AT)
Title: Key for a cylinder lock and cylinder lock
IPC: E05B19/00
Filed: 1992-04-23
Granted: 1999-09-27
Abstract: Key for a cylinder lock, which has, on the flat sides of the key, longitudinal ribs and/or longitudinal grooves 8, 11 which run in the direction 3 of insertion of the key into the keyway, on at least one flat side of the key at least one profile groove 18, 19, 20 being additionally provided, the length of which is smaller than the length of the key shank 2, characterized in that the profile groove 18, 19, 20 is arranged obliquely to the direction 3 of insertion of the key, that is to say at an angle unequal to 90 degree and unequal to 0 degree to the direction of insertion, and in that the profile groove 18, 19, 20 intersects at least one longitudinal groove 8, 11. <IMAGE>
Patent CH-621905-B (CH)
Inventor: SANO MOTOHIRO
IPC: G04F7/04
Filed: 1976-06-03
Abstract: A jumper spring for use in a timepiece to releasably hold a toothed wheel comprises a spring member having a generally V-shaped portion engageable with the toothed wheel for releasably holding the wheel during use of the jumper spring, and an elongated arm portion connected to the V-shaped portion. A sputtered layer of chromium covers a part of the V-shaped portion and a sputtered layer of another material overlies the chromium layer. The other material is selected from the group consisting of either a hard material, such as Al2O3, TiC and SiC or a material having a low coefficient of friction, such as MoS2 so as to provide the necessary hardness or low coefficient of friction needed to enable the jumper spring to withstand repeated engagement with the toothed wheel.
Patent DK-165645-B (DK)
Inventor: GUDMUNDSSON EDGAR
IPC: E04B1/35
Filed: 1987-04-22
Abstract: A wall comprising two generally parallel wallboards (1), which form a part of the surface of the wall on each side, together with a post (4) of sheet metal, preferably of galvanized sheetiron, with a flange (5) on each end of the section of the post, where each flange lies in a respective kerf (7) in the edge of a wallboard, wherein each wallboard has a groove (3) in the one edge and a respective tongue (2) at the opposite edge, in addition to the kerf for the flange of the sheet metal post in one or the other edge.
Patent DK-150757-B (DK)
Inventor: PUSCH REINER
IPC: F21V7/06
Filed: 1982-11-09
Abstract: 1. A broad-beam axially symmetrical street lamp having three reflectors (1, 2, 3) in the form of surfaces of rotation, which are arranged above one another around the axis of symmetry (A) of the street lamp, which respectively have a lamp opening in the centre and which reflect the light of the lamp (L) away from the axis of symmetry at a high angle, for a lamp which has a translucent bulb and which is so assigned that its longitudinal axis coincides with the axis of symmetry, characterised in that the generatrix for the surfaces of rotation of the three reflectors are sections consisting of confocal parabolas, whose respective focal points (F) lie on the axis of symmetry (A) at the level of the centre point (M) of the heated discharge tube (B) of the lamp (L) and which are determined by the following values (in each case with a tolerance of + or - 10 %) : see diagramm : EP0085145,P4,F1  where f is the focal length, D is the outer diameter of the larger reflector, alpha is the angle of the main axis - measured clock-wise from the axis of symmetry (A) below the focal point (F) - and d is the diameter of the lamp opening, that the outer diameter (a1) of the lowermost reflector (1) ids represented by a1/D = 0,82 + or - 10 %, and that the second reflector (2) has the largest outer diameter (D), whose value is below 300 mm and preferably amounts to 220 mm + or - 10 %.
Patent DK-164640-B (DK)
Inventor: COLLEN DESIRE JOSE
IPC: A61P7/02
Filed: 1986-11-07
Abstract: Plasminogen activators of the tissue-type and plasminogen activators of the urokinase-type appear to have a synergistic action in vivo when administered together as thrombolytic agents. This can be used in pharmaceutical compositions and in methods for the preparation and use thereof.
Patent DK-161573-B (DK)
Inventor: SUNDHOLM GOERAN
IPC: B23K/
Filed: 1987-11-24
Abstract: PCT No. PCT/FI87/00042 Sec. 371 Date Sep. 16, 1987 Sec. 102(e) Date Sep. 16, 1987 PCT Filed Mar. 24, 1987 PCT Pub. No. WO87/05844 PCT Pub. Date Oct. 8, 1987.The invention relates to an apparatus to be used when welding pipes together. The apparatus comprises a bellows structure (4, 5) for shielding the weld joint area by internal contact with the pipe ends on both sides of the weld joint (3). When the apparatus is inserted and, especially, pulled out after welding, the bellows tend to be damaged by the hot weld joint. It is the object of the invention to solve this problem. The object is achieved by providing both bellows (4, 5) with radial side supports (14, 15) dragging against the inner surface of the pipes and by arranging the bellows to contract within the radial side supports in the absence of an inner overpressure. Between the bellows (4, 5), centering discs (9, 10) are arranged on hoses (6, 7, 8) for leading a protective gas and compressed air. The hoses (6, 7, 8) are connected with the holders of the bellows by means of a through cotter pin provided with a spring (17) for keeping the pin stationary.