baber/WOPTO huggingface dataset:
Patent IT-FI950144-A1 (IT)
Title: Dispositivo per il prelievo e l'erogazione di liquidi coloranti
Inventor: SCATIZZI MARIO
IPC: B67D/
Filed: 1995-06-27
Abstract: Dispositivo per il prelievo e l'erogazione di liquidi coloranti comprendente un corpo tubolare (4) ad asse verticale, con un appendice inferiore 840) terminante con un ugello (41) di prelievo e di erogazione dei liquidi, nella cui cavità è alloggiata la camera (29 di un cilindro pneumatico con un pistone (1) fissato all'estremità inferiore di una corrispondente asta di comando (11), la quale asta è coassiale al cilindro (4) ed alla rispettiva appendice (40) e mezzi per la movimentazione verticale alternativa, a comando, della detta asta (11), in cui i detti mezzi di movimentazione dell'asta (11) comprendono un motore (9) a comando elettronico posizionato in testa al corpo tubolare (4): l'albero (10) del detto motore (9) essendo cavo, coassiale al corpo (4) ed in presa con una vite senza fine (5) passante al suo interno ed avente l'estremità inferiore (50) fissata all'estremità superiore (110) della detta asta (11), in maniera che la rotazione dell'albero motore (10) comporta la traslazione longitudinale dell'asta (11) con il pistone (1).(FIG. 1).
Patent IT-LT930003-A1 (IT)
Title: Attivatori e o normalizzatori naturali, a composizione diversificata,  delle funzioni delle strutture nervose degli organismi viventi umani,
Inventor: PATRIARCA MILVIA
Filed: 1993-05-04
Abstract: La presente invenzione ha per oggetto innovazioni straordinarie nei seguenti campi: cure risolutive della mancanza di crescita, dell'invecchiamento e delle malattie degli esseri umani, degli animali e dei vegetali. Oggi si curano i suddetti inconvenienti, agendo sui sintomi e non sulle vere cause che risiedono esclusivamente nelle alterazioni funzionali o nelle lesioni che si producono a carico delle strutture nervose di tutti gli organismi viventi. Queste nuove medicine appunto servono ad attivare e o a normalizzare le funzioni delle strutture nervose di tutti gli organismi viventi, che, recuperata gradualmente la propria vitalità, si organizzano per riportare, pure gradualmente, gli organismi viventi alla normalità, cioè verso la salute; e ciò, senza lasciare alcuna traccia delle malattie in tal modo curate. Si possono usare in medicina, in veterinaria, in agricoltura, ecc., sempre le stesse sostanze, perché esse sono prive di specificità sia zoologica e fitologica che di strutture, come gli ormoni.
Patent IT-MI911748-A1 (IT)
Inventor: SAVIOTTI VANNI
IPC: H04Q3/42
Filed: 1991-06-25
Abstract: A circuit assembly is disclosed which comprises: an interface circuit (3') between the subscriber line (L) and exchange devices of the kind with two amplifiers connected in a bridge configuration (9A,9B) between the battery (UB) terminals and having a means (15) of detecting the output currents (IA,IB); a supply circuit (5') which includes the exchange battery (UB) and a ring generator (AC'); a switch-over means (7) for putting the line (L) through the interface circuit (3') or the supply circuit (5'); two bridge resistors (RP,RP') which are in series with the line (L) when the latter is connected to the supply circuit (5') and of which one (RP') is connected permanently between one (A) of the line terminals and the output (3A) of one (9A) of the amplifiers, which output is substantially at the potential of one of the battery (UB) poles; an additional resistor (RA), having a much higher resistive value than that of the bridge resistors (RP,RP') and being connected between the other (B) of the line (L) terminals and the output (3B) of the other (9B) of the amplifiers; and a processing means within the interface circuit (3'), which includes said detecting means (15) and is effective to isolate the useful signal (IT) from the line current, recognize a possible hook-off state, and send a corresponding signal (OH) to the exchange devices. <IMAGE>
Patent IT-MI942344-A1 (IT)
Title: Sistema di somministrazione di fluido per cardioplegia
Inventor: MERTE KENNETH E
IPC: A61M5/168
Filed: 1994-11-18
Abstract: Sistema di somministrazione di un fluido per cardioplegia comprendente un set di tubi (22; 102), una pompa volumetrica (24; 104) e un sistema di miscelazione. Il set di tubi (22; 102) ha un tubo di erogazione di fluido per cardioplegia (28; 108); un tubo di erogazione del sangue (36; 116); e un tubo di erogazione del fluido per cardioplegia e del sangue (28 e 36; 108 e 116). La pompa volumetrica (24; 104) impegna il tubo di somministrazione del fluido per cardioplegia (44; 124) per pompare attraverso esso il fluido.Il sistema di miscelazione comprende valvole a stringimento (48, 50 e 52; 48, 50, 60 e 62; 130, 132, 136 e 138; 162 e 164) per stringere alternatamente - continuamente i tubi di erogazione del fluido per cardioplegia e del sangue (28 e 36; 108 e 116) per chiudere e aprire i tubi di erogazione del fluido per cardioplegia e del sangue (28 e 36; 108 e 116) cosicché soltanto uno dei tubi di erogazione del fluido per cardioplegia e del sangue (28 e 36; 108 e 116) è aperto in un dato momento, e un elemento di controllo (56; 148) che controlla gli intervalli (tA, tB) durante i quali le valvole a stringimento (48, 50 e 52; 48, 50, 60, e 62; 130, 132, 136 e 138; 162 e 164) sono aperte per controllare il rapporto fra il medicamento per cardioplegia e il sangue o sostituto del sangue somministrato attraverso il tubo di somministrazione del fluido per cardioplegia (44; 124).
Patent IT-MI991894-A1 (IT)
Inventor: GHISALBERTI CARLO
IPC: A23L1/30
Filed: 1999-09-09
Abstract: The present invention relates to the use of conjugated linoleic acid (CLA) for the topical treatment of fatty deposits and cellulite and to new topical compositions and to cosmetic and dermatological topical compositions for the treatment of fatty deposits and cellulite comprising CLA as well as kits comprising CLA for said treatment.
Patent IT-PI970006-A1 (IT)
Inventor: GAMBA WILLIAM
IPC: A61K8/22
Filed: 1997-01-28
Abstract: The method, belonging to the aesthetical field, intends to prevent hair loss and to stimulate the natural growth of hair in bald areas by restoring a valid micro-circulation into the scalp (both at cutaneous and subcutaneous level), thanks to the injection of an oxygen-ozone mixture. As for the oxygen-ozone mixture, the concentration can vary from 1 (one) microgram O3/ml.O2 to 40 (fourty) micrograms O3/ml.O2, while the quantity can vary from 5 (five) to 60 (sixty) cubic centimetres.
Patent IT-RA950009-A1 (IT)
Title: Cabinet informatico monoblocco multifunzione con elevate capacita' di  recupero ed archiviazione
Inventor: BANDINI CLAUDIO
Filed: 1995-03-16
Abstract: TRATTASI DI UN CABINET INFORMATICO MONOBLOCCO MULTIFUNZIONALE NON REPERIBILE SUL MERCATO, CONTENENTE UN PERSONAL COMPUTER, MONITOR, STAMPANTE, MODEM DI TRASMISSIONE DATI, CHE PERMETTE DI POTER LOCARE A UN UTENTE ESTERNO, UN PRODOTTO COMMERCIALE "CHIAVI IN MANO" DI BANCA - DATI, DI PRONTO IMPIEGO, AGGIORNATO IN TEMPO REALE, ELIMINANDO OGNI PROBLEMATICA INERENTE LA TRASMISSIONE DATI TELEMATICA, TEMPI DI ATTESA PER AGGIORNAMENTI NORMATIVI, DOVUTI A QUALSIASI ALTRO METODO DISTRIBUTIVO, PROBLEMI SU LINEE TELEFONICHE PER NON SUFFICIENTE AFFIDABILITA' IN QUANTO IL "KNOW - OUT"E' RESIDENTE PRESSO L'UTENTE.
Patent IT-RM960098-A1 (IT)
Title: Dispositivo miscelatore per un bruciatore comprendente un manicotto  a valle del tubo di fiamma
Inventor: BOGNAR PAUL
IPC: F23D11/40
Filed: 1996-02-12
Abstract: Il procedimento consiste essenzialmente nel fare assorbire idrogeno a un corpo metallico e quindi nell'esporlo a un gas contenente ossigeno. Si possono ottenere temperature dell'ordine di alcune centinaia di gradi centigradi attivando opportunamente il sistema.
Patent IT-TO950338-A1 (IT)
Title: Corpo poroso per l'immagazzinamento e la erogazione controllata di sostanze evaporabili (erogatore di profumo)
Inventor: BREITENBUCHER KLAUS
IPC: C03B19/00
Filed: 1995-04-28
Abstract: Viene descritto un corpo poroso per l'immagazzinamento e l'erogazione controllata di sostanze evaporabili (erogatore di profumo) che è costituito da vetro sintetizzato a pori aperti. Il corpo presenta preferibilmente un volume di pori compreso tra il 30 e l'85% e una grandezza di pori media comprese tra 10 e 350 micron. Il corpo rispetto alle sostanze immagazzinate è inerte, presenta un volume di immagazzinamento molto alto e rilascia le sostanze immagazzinate in modo molto regolare, in cui in particolare non si presentano effetti cromatografici.
Patent IT-TO960231-A1 (IT)
Inventor: KNAPP DR ALFONS
IPC: G05D23/13
Filed: 1996-03-26
Abstract: A retaining device for frictionally retaining two mobile parts of a thermostatically controlled mixing valve. The first part (2) of the mixing valve contains a cavity having a side wall (40), a top wall (41) and a bottom wall (42). An O-ring type packing washer (9) is disposed in the cavity and frictionally grips a surface of the second mobile part (13). The axial distance between top wall (41) and bottom wall (42) of the cavity is less than the cross-sectional diameter in the axial direction of the ring-shaped packing washer (9). The packing washer (9) is thus compressed axially and establishes a frictional hold between the top wall (41) and bottom wall (42) of the cavity and the axially extending surface of the second mobile part (13). The diameter of the cavity is greater than the diameter of the compressed ring-shaped packing washer (9) thereby forming a ring-shaped space or chamber between the washer (9) and the side wall (40). This ring-shaped space communicates with a water holding area of the mixing valve through a groove (43) in the bottom wall (42) of the cavity.
Patent IT-TO990198-A1 (IT)
Inventor: FOA MARCO
IPC: C08G63/16
Filed: 1999-03-15
Abstract: Copolymers of biodegradable aliphatic polyesters from one or more aliphatic dicarboxylic acids or diesters of the said acids and one or more linear or branched aliphatic glycols, characterized by containing up to 10% in moles of ricinoleic acid. <IMAGE>
Patent IT-TO991185-A1 (IT)
Inventor: MAGGIO SANTO
IPC: H04L7/033
Filed: 1999-12-31
Abstract: Method for recovering a clock signal from an input data signal in a telecommunications system, that provides for comparing the input data signal (DIN) with a recovered clock signal (RCK) in order to control said recovered clock signal (RCK) generation and provides for generating a plurality of delayed clock signals (CK1... CKn), obtained by multi-delaying at least a reference signal (CKREF), said delayed clock signals (CK1... CKn) being phase-shifted with respect to each other. According to the invention, said delayed clock signals (CK1... CKn) show a phase shift (T) with respect to each other, that is nominally constant in time, and, moreover, it is provided for selecting the recovered clock signal (RCK) among said delayed clock signals (CK1... CKn). <IMAGE>
Patent IT-VE940054-A1 (IT)
Inventor: BOTTEON RENATO
IPC: E05B27/00
Filed: 1994-12-27
Abstract: A key and cylinder lock unit, in which the lock (2) comprises a plug (6) and a cylinder (8), both provided with a plurality of substantially radial cylindrical recesses (12,10) housing pins (16,18) formed in two parts separated by a surface, which when they assume a predetermined axial and rotational position enable the plug (6) to rotate relative to the cylinder (8) under the control of a key inserted into a corresponding seat (14) provided in the plug (6) and interacting with the end of said pins which extend into said seat, characterised in that:   that end of said pins which extends into said seat (14) is provided with an eccentric appendix (30), in that face facing said pins (16,18), the key (4) comprises a continuous channel (36) open towards the end of the key shank (34) and of width and cross-section suitable for housing the appendices (30) of the pins, it extending longitudinally with different depths and with a non-rectangular path, the shape of said channel (36) being such that when the key (4) is totally inserted into its seat (14), the axial and rotational position of each pin (16,18) are such that said plug (6) is released from said cylinder (8).   <IMAGE>
Patent IT-VI950015-A1 (IT)
Title: Metodo per la realizzazione di miniature in vetro, in rilievo o in bassorilievo
Inventor: BENETOLLO RENZO
IPC: C03B/
Filed: 1995-02-01
Abstract: L'invenzione si riferisce ad un metodo per realizzare miniature in vetro comprendente: la formatura del modello da riprodurre; l'ottenimento di un modello negativo in gomma o simile ottenuto per calco dall'originale sulla superficie da riprodurre; l'ottenimento di un modello positivo ottenuto per calco dal modello negativo; la realizzazione di uno stampo in gesso tramite colata di gesso su uno o più modelli positivi; l'espulsione o la distruzione dei modelli positivi inseriti nello stampo stesso; la colata del vetro su impronte realizzate sullo stampo in gesso; il raffreddamento dello stampo di gesso e della colata in esso contenuta fino a temperatura ambiente. Il metodo si caratterizza per il fatto che detto stampo in gesso, prima della colata del vetro, è riscaldato ad una temperatura attorno ai 900-1000°, tale da provocare l'espulsione dell'aria e dell'acqua residua inglobata all'interno dello stampo di gesso durante la colata e che il raffreddamento dello stampo di gesso, dopo la colata del vetro, avviene fino ad una temperatura di circa 600° nell'intervallo di tempo di circa 2-3 ore per poi discendere a temperatura ambiente per circa 10-12 ore.
Patent NO-20120035-A1 (NO)
Title: Fremgangsmåte og anordning for galvanisk, flerfrekvent avbildning av resistivitet i undergrunnen
Inventor: ITSKOVICH GREGORY B
IPC: G01V3/24
Filed: 2012-01-13
Abstract: Det er beskrevet en formasjonsmålings- og behandlingsteknikksom reduserer virkningene av veggavstanden mellom et resistivitetsmåleverktøy (10) og veggen (12) i et borehull, idet resistivitetsmåle- verktøyet utnytter kapasitiv kobling mellom seg og formasjonen for å frembringe resistivitetsdata som er nyttige for å generere et resistivitetsbilde av forma- sjonen. Reduksjon i virkningene av veggavstanden oppnås ved bruk av flerfrekvente, fasefølsomme målinger for å identifisere en målt resonansfrekvens som kan brukes til å frembringe et bilde som benytter målinger som er minst påvirket av verktøyets veggavstand og ukjent eller uspesifisert induktans i verktøyet. Reduksjonen i virkningene av veggavstanden er tydeligst i tilfellet av lavresistive formasjoner og oljebaserte, lavtledende borefluider.
Patent NO-20120834-A1 (NO)
Title: Fremgangsmater og systemer for styring av streamerdybdeprofil
Inventor: SUEDOW GUSTAV GORAN MATTIAS
IPC: G01V1/38
Filed: 2012-07-18
Abstract: Det er beskrevet fremgangsmåter og systemer for styring av dybdeprofiler for marine sensorstreamere mens de slepes gjennom et vannlegeme. En utførelsesform beskriver en fremgangsmåte for marin geofysisk kartlegging der fremgangsmåten omfatter: å slepe en geofysisk sensorstreamer gjennom et vannlegeme som har en overflate og et gulv, den geofysiske sensorstreameren er koblet til et kartleggingsfartøy med en innføringskabel, at innføringskabelen har en lengde som strekker seg fra kartlegg i ngsfartøyet; at å justere lengden til innføringskabelen forårsaker at en fremre ende av den geofysiske sensorstreameren følger et dybdeprofil; og å avbøye den geofysiske sensorstreameren i vertikalplanplanet på ett eller flere steder i avstand fra hverandre.
Patent NO-20131032-A1 (NO)
Title: Flerfasemåler for å fremskaffe data for produksjonsstyring
Inventor: CHEN SONGHUA
IPC: G01F1/56
Filed: 2013-07-24
Abstract: En fremgangsmåte og apparat for å bestemme et volum til en fase av et flerfasefluid som strømmer i et produksjonsrør er fremskaffet. Et magnetisk felt er overført på fluidet for å innrette kjerner til flerfasefluidet langs en retning av det magnetiske felt. Et radiofrekvenssignal er utsendt inn i flerfasefluidet for å eksitere kjernene, og et signal er detektert fra kjernene som reagerer på et utsendt radiofrekvenssignal. En amplitude til det detekterte signal er bestemt og volumet til fasen som strømmer i produksjonsrøret er bestemt ved å benytte den bestemte amplitude og en amplitude til et kalibreringssignal.
Patent NO-20151252-A1 (NO)
Title: Method and apparatus to position and protect control lines being coupled to a pipe string on a rig
Inventor: WEBRE CHARLES MICHAEL
IPC: E21B17/02
Filed: 2015-09-24
Abstract: An apparatus to attach a control line to a tubular member, in which the apparatus includes a control line arm having a first control line guide coupled thereto, and a base having a second control line guide coupled thereto, with the control line arm coupled to the base and movable with respect to the base. The control line arm may be movable between a raised position and a collapsed position with respect to the base, and the control line arm may be at least one of slidably coupled and rotatably coupled to the base.
Patent NO-20171772-A1 (NO)
Inventor: PRAKASH ANAND
IPC: E21B47/12
Filed: 2017-11-08
Abstract: An antenna assembly includes a bobbin positionable about an outersurface of a tool mandrel, and a coil wrapped about an Outer bobbin surface of the bobbin and extending longitudinally along at least a portion of the outer bobbin surface. A plurality of ferrites are positioned within a groove defined in the Outer surface of the tool mandrel, and the plurality of ferrites extend circumferentially about the Outer surface and interpose the tool mandrel and the coil.
Patent PE-69098-A1 (PE)
Title: Preparacion concentrada de anticuerpos
Inventor: RELTON JULIAN MARCUS
IPC: C07K16/28
Filed: 1997-05-23
Abstract: SE REFIERE A UN PREPARADO DE ANTICUERPOS MONOCLONALES, DE PREFERENCIA LIBRE DE AGREGADOS, CARACTERIZADO POR PRESENTAR UNA CONCENTRACION MAYOR DE 100 mg/ml Y POR UN pH DIFERENTE DEL pH DEL PUNTO ISOELECTRICO DEL ANTICUERPO, PARA MAXIMIZAR LA SOLUBILIDAD DEL ANTICUERPO EN LA SOLUCION CONCENTRADA, EN DONDE DICHO ANTICUERPO ES RECOMBINANTE, DE PREFERENCIA, QUIMERICO O HUMANIZADO (TAL COMO UN INJERTADO DE CDR), O ES UN ISOTIPO DE INMUNOGLOBULINA G. TAMBIEN SE REFIERE AL PROCEDIMIENTO DE PREPARACION DE DICHO CONCENTRADO DE ANTICUERPOS MONOCLONALES, QUE COMPRENDE ULTRAFILTRACION DE FLUJO TANGENCIAL. LOS ANTICUERPOS OBTENIDOS SE PUEDEN PREPARAR EN CONCENTRACIONES VARIAS VECES MAYORES QUE LOS OBTENIDOS A PARTIR DEL PROCESAMIENTO DE LA SANGRE, SIENDO ADMINISTRADOS POR VIA SUBCUTANEA, PARA EL TRATAMIENTO DEL CANCER, DE DESORDENES MEDIADOS POR CELULAS T, TALES COMO VASCULITIS SEVERA O ARTRITIS REUMATOIDEA Y DE DESORDENES AUTOINMUNES, ENTRE OTROS
Patent PL-229120-A1 (PL)
Inventor: METZ PAUL
IPC: C21C5/30
Filed: 1981-01-08
Abstract: A process for refining a steel melt in a furnace in which a steel melt is formed with a slag layer thereon, the thickness of which can be controlled by passing a stream of inert gas upwardly through the melt, while directing a first stream of oxygen into the melt from a lance positioned above the melt for the top-blowing refining thereof to produce carbon monoxide above the melt and feeding a second stream of oxygen from the lance for the post-combustion of the released carbon monoxide, while monitoring continuously the thickness of the slag layer, the height of the melt, the carbon monoxide post-combustion factor (%CO2/%CO+%CO2) and the speed of decarburization of the melt and controlling the height of the lance above the melt and the discharge rates of total blown oxygen, the second stream of oxygen and the inert gas stream at any given time in accordance with a particular relationship.
Patent PL-239456-A1 (PL)
Title: Process for preparing derivatives of -arylalkanocarboxylic acids
Inventor: SCHLOEMER GEORGE C
IPC: C07C309/63
Filed: 1982-12-10
Abstract: Pharmaceutically useful optically active  alpha -arylalkanoic acids of the formula <CHEM> where Ar is aryl and R1 is alkyl or cycloalkyl or esters, ortho esters, or amides thereof are stereoselectively prepared by contacting a reagent of the formula Ar-MX, (Ar) 2M or ArM' where M is Cd, Cu(II), Mn(II), Mg or Zn, and M' is Cu(I) or Li, and X is halogen, with an optically active compound of the formula <CHEM>  where Z is a leaving group and Y is halogen, acyloxy or <CHEM> where R' and R'' are alkyl, aryl or with N are a heterocyclic group, to form the optically active ketone of the formula <CHEM> which is ketalized and rearranged to said acid, ester, ortho ester or amide. Alternatively, said ketone is reduced to the corresponding alkanol, which is rearranged to the  alpha -arylalkanal. The alkanal so produced is converted to said acid by conventional methods.
Patent PL-241604-A1 (PL)
Title: Apparatus for producing a sheet of fibrous biological wastes
IPC: A01F15/04
Filed: 1983-04-22
Abstract: The apparatus accepts dry stripped crude fiber such as straw or sugar cane wastes, coconut husks, or elephant grass, compacts them into a relatively dense sheet, and bonds a strong surfacing material such as a heavy paper to the faces and edges. The sheet, continuously flowing from the apparatus, is cut into standard lengths and the cut ends are capped with the same surfacing material. A precompactor near the end of an entrance chute into the apparatus uniformly predensifies the incoming fiber prior to its compaction by means of a ram. The ram is carried on roller bearings especially adapted to withstand the weight and other forces associated with the continuous movement of the ram. The compacted material is continuously propelled by the ram and enters a press, where heat and pressure produce a dimensionally stable sheet bonded together partially by natural resins released from the fibers by the heat, and partially by mechanical interlinking between fibers. In the following operation, the sheet is covered with the surfacing material, which is successively folded over and bonded to the edges of the sheet. The surfacing material, provided in discrete rolls, is continuously available from a feeder station, which facilitates the substitution of a fresh roll as the material is consumed. In the following sawing and end sealing operations, fully surfaced sheets of standard lengths are produced.
Patent PL-289710-A1 (PL)
Title: Method of treating surface of an absorptive resin and polymeric composition obtained thereby
IPC: C08J3/00
Filed: 1991-04-02
Abstract: A method for treating the surface of an absorbent resin which comprises mixing (I) 100 parts by weight of an absorbent resin powder having a carboxyl group, (II) 0.01 to 30 parts by weight of a polyhydric alcohol, (III) 0 to 50 parts by weight of water and (IV) 0 to 60 parts by weight of a hydrophilic organic solvent, and heat-treating at a temperature in the range of 90 to 250 DEG C to treat the surface of said absorbent resin powder (I) until the reaction of said absorbent resin powder (I) with said polyhydric alcohol (II) is completed, wherein the time for completion of the reaction is the time that satisfies the following equation (a-1): <MATH> wherein A is absorption capacity of said absorbent resin powder (I) for physiological saline solution, B is the absorption capacity of the resultant treated absorbent resin for physiological saline solution, and C is parts by weight of said polyhydric alcohol (II) used per 100 parts by weight of said absorbent resin powder (I).
Patent PL-299219-A1 (PL)
Title: Apparatus for aeration of liquids contained in tanks
Inventor: SCHEIBINGER LUDWIG
IPC: C02F1/74
Filed: 1992-08-20
Abstract: PCT No. PCT/CS92/00024 Sec. 371 Date Apr. 26, 1993 Sec. 102(e) Date Apr. 26, 1993 PCT Filed Aug. 20, 1992 PCT Pub. No. WO93/04770 PCT Pub. Date Mar. 18, 1993.A device for aeration of a liquid vessel comprising at least one guide rail /2/ and a plurality of sliders /3/ arranged thereon and the sliders /3/ include holders carrying at least one hose of which at least a portion is perforated and the device further comprises pulling means for pulling the hose /5/ into the empty or liquid containing vessel to its working position. The hose /5/ is movable along its axis with respect to said holders /4/ wherein the holders /4/ have a closed circular shape and their sliders /3/ are connected to pulling means /6/.