baber/WOPTO huggingface dataset:
Patent CZ-180097-A3 (CZ)
Title: Sinker for single-cylinder circular knitting machines or for machines for producing stockings with a cylinder and a round or half-round plate
Inventor: LONATI FRANCESCO
IPC: D04B15/02
Filed: 1997-06-11
Abstract: A hook (1) for single-cylinder circular knitting or stocking machines with cylinder and circular or semicircular plate. The hook (1) comprises an elongated and flat hook body (2) which has a claw-shaped longitudinal tip (3). The hook (1) also comprises an elastic-lamina element (4) which is associated with a lateral face of the hook body (2) and has a claw-shaped tip (5) which faces the claw-shaped tip (3) of the hook body (2). A passage (6) is formed between the lamina element (4) and the hook body (2) and is suitable to be crossed by a needle (7) of the knitting or stocking machine; the claw-shaped tip (5) of the lamina element (4) can flex elastically towards and away from the hook body (2), respectively to close the claw-shaped tip (3) of the hook body (2) and to allow the extraction of the needle (7) inserted in the passage (6) towards the claw-shaped tip (3) of the hook body (2). <IMAGE>
Patent CZ-183498-A3 (CZ)
Title: Microbial method of steroid transformation
Inventor: WIERSMA MARTEN
IPC: C12P33/10
Filed: 1996-12-10
Abstract: The invention relates to a microbial method of in vitro transformation of a steroid into its corresponding 11 alpha -hydroxy analogue using oxygen and a microorganism selected from Aspergillus ochraceus, Aspergillus niger, Rhizopus stolonifer, Rhizopus nigricans, Rhizopus arrhizus, and strains of Pestelotia, characterized in that a steroid having a purity of less than 97 % is used.
Patent CZ-197098-A3 (CZ)
Title: Process for producing chip card for contactless operation
Inventor: HOTTINGER WERNER
IPC: G06K19/077
Filed: 1996-12-19
Abstract: In the chip cards to be produced, besides the integrated circuit components (chip 2 and/or electronic module 12) and coupling means (coil 6, capacitor coatings 8) for contactless power and/or data transmission there is also at least one label (1) forming the outer surface of the card. The coupling means (6, 8) are applied to the inner side of said label. The label (1), thus prepared, is then inserted into an injection mould. The separately prepared integrated circuit components (12) are then positioned accurately in the mould via terminals in the coupling means (6, 8) and contacted with them. Finally the card body is moulded on the label (1) by the injection moulding process and the integrated circuit components (2, 12) are moulded into the card body. Electric connections between the coupling means (6, 8) and the integrated circuit components (12) are produced in the mould itself by various means.
Patent CZ-199997-A3 (CZ)
Title: Two-stage extruding apparatus and extrusion process of rubber compounds and plastics
Inventor: KLEIN HEINZ
IPC: B29C48/38
Filed: 1997-06-25
Abstract: A new process extrudes rubber mixtures and plastics, in a two-stage extrusion unit, with intermediate evacuation removing gases between stages. In this method, the first extrusion stage (1) employs a gear pump extruder. At its output, or immediately thereafter, the extrudate is strained (3), finely divided into strands (5) and/or split up. The product, during transfer to the second extrusion stage (2), enters an evacuated (7, 8) chamber (6). Also claimed is the corresponding extrusion unit.
Patent CZ-219293-A3 (CZ)
Title: Device for holding down of files
Inventor: DOERNER ULF DIPL ING
IPC: B42D3/16
Filed: 1993-04-16
Abstract: A file-holder, in particular for holding presentation files in the presentation position, is characterized by a flat holding rail (10) with upwardly bent or folded flanges (12) at the ends.
Patent CZ-262298-A3 (CZ)
Inventor: SVOBODA MILAN
IPC: F16L11/08
Filed: 1998-08-19
Abstract: Uspořádání potrubí mezi vstřikovacím čerpadlem a nejméně
jednímvstřikovačemspalovacího vznětového motoru má
vysokotlaké potrubí tvořeno nejménějednou vysokotlakou
vstřikovací hadicí, zakončenou na obou koncích koncovkami.
Vstřikovač je připojen sběrným nízkotlakým potrubím na
odpad, tvořené vysokotlakou vstřikovací hadicí /31/, kteráje
opatřena vnitřní stěnou /311 / z vrstvy palivu chemicky
odolného plastického materiálu, na nížje navinuta nejméně
jedna vrstva proti sobě šroubovité vinutého opředení /312/ z
ocelových drátů, a dále vnější povrchovou vrstvou /315/ z
plastického materiálu odolného tepelnému záření a olejům.
Společné sběrné nízkotlaké hadicové potrubí /4/ propojuje
vstřikovače /2/se vstupemdo odpadu /5/.
Patent CZ-265896-A3 (CZ)
Title: Tryptase inhibitor, its use and pharmaceutical compositions containing thereof
Inventor: KIDO HIROSHI
IPC: A61K38/00
Filed: 1995-03-20
Abstract: A viral desease remedy or preventive containing antileukoprotease (ALP) as the active ingredient. It can be effectively applied to particularly viral diseases cauded by viruses that can be activated by tryptase clara, i.e., viruses that contain adventitial glycoproteins and cause infection in the respiratory tract to proliferate therein, for example, influenza virus, parainfluenza virus, RS virus, measles virus, or mumps virus. <IMAGE>
Patent CZ-275793-A3 (CZ)
Title: Built-up container having the form of a parallelepiped
Inventor: SCHAFHAUSEN ULRICH OTTO
IPC: B65D21/036
Filed: 1993-12-15
Abstract: The invention relates to a foldable transport container of a cuboid shape, in particular as a reusable transport packaging, having a bottom, a lid and at least one folding frame which can be fixed detachably between the bottom and the lid, forms the side walls, and whose interior forms an opening whose cross-section corresponds to the horizontal internal cross-section of the container, the folding frame having a base frame of low construction height, whose outer sides are disposed approximately within the vertical outer sides of the container and to which side walls are linked, which side walls stand upright when the container is full and are folded inwards in each case into a horizontal position when the container is empty. <IMAGE>
Patent CZ-9502884-A3 (CZ)
Inventor: PAVELKA JAROSLAV ING ARCH CSC
IPC: E04B1/00
Filed: 1995-11-06
Abstract: Na vyztužený separátorový rozvlnutelný
elastický pásový plášť se působí přikládáním
tuhých stavebních elementů a zálivkou, přičemž
se rozvinují jednotlivé navinuté pásy vyztuženého
separátorového rozvinutelného
elastického pásového pláště a posouvají se,
zatímco po zatuhnutí se pásy vyztuženého separátorového
rozvinutelného elastického pásového
pláště odloupnou a svinou. Výrobek
sestává z čirého střešního světlíku (1), pod
nímž je vytvořen reflexní světlovod (2) alespoň
z jedné vnitřní reflexní vertikální komunikace
(3) s optickými odrážeči (4), přičemž pod střechou
(5) je vytvořena horizontální montovatelná
a demontovatelná tepelná izolace (6) a
montovatelná a demontovatelná nehorizontální
tepelná Izolace (7) a je definitivně
upravena část již užívané stavby (8).Zařízení
sestává ze stojek (61), k nimž jsou přestavltelně
upevněny bočnice (62), ve kterých jsou vloženy
vyztužené separátorové rozvinutelné pásové
pláště (63), přičemž navinuté pásy (64)
jsou upraveny přestavitelně na bočnicích (62),
zatímco pro stropní konstrukci (65) jsou podpěry
(66) upraveny přestavitelně a k jejich
vrcholu (67) je připojena deskovltá podložka
(68), přes kterou je veden vyztužený separátorový
rozvlnutelný elastický pásový plášť (63).
Navinuté pásy (64, jsou přestavitelně
upraveny na deskovíté podložce (68).
Patent CZ-308496-A3 (CZ)
Title: Storage tank with integral module for heating or cooling the container content
Inventor: SCUDDER JAMES A
IPC: B65D83/72
Filed: 1995-05-26
Abstract: An outer container for holding a material, such as a food, beverage or medicine with a sealed thermic module inside the container. The thermic module contains chemical reactants that mix upon actuation of the container by a user. Mixing of the reactants produces an exothermic or endothermic chemical reaction, depending upon the reactants selected. The contents of the outer container surround a portion of the outside surface of the thermic module, thereby facilitating conduction of heat. The thermic module has a hollow module body that is closed at one end and a module cap that seals the other end of the module body. The module body contains the solid reactant, and the module cap contains the liquid reactant. The module cap has a tubular section with a flexible member closing one end and a breakable barrier closing the other end. With the exception of the barrier, the cap is of unitary construction. The cap has one or more integrally formed prongs extending from the inner surface of the disc toward the barrier. The prongs move in an axial direction toward the barrier and may also spread apart radially when the outer surface of the flexible member or an actuator connected to it is depressed by the user's finger. The dual motion of the prongs in both axial and radial directions promotes complete puncturing of the barrier and thus fast mixing of the reactants.
Patent CZ-324398-A3 (CZ)
Title: Derivatives of substituted tetracyclic tetrahydrofuran, process of their preparation, composition containing such derivatives and use of those derivatives as medicament
Inventor: GIL-LOPETEGUI PILAR
IPC: A61K31/496
Filed: 1997-04-09
Abstract: PCT No. PCT/EP97/01829 Sec. 371 Date Oct. 6, 1998 Sec. 102(e) Date Oct. 6, 1998 PCT Filed Apr. 9, 1997 PCT Pub. No. WO97/38991 PCT Pub. Date Oct. 23, 1997This invention concerns the compounds of formula (I), the N-oxide forms, the pharmaceutically acceptable addition salts and the stereoisomeric forms thereof, wherein n is zero to 6; p and q are zero to 4; r is zero to 5; R1 and R2 each independently are hydrogen; optionally substituted C1-6alkyl; C1-6alkylcarbonyl; halomethylcarbonyl; or R1 and R2 taken together with the nitrogen atom to which they are attached may form a morpholinyl ring or an optionally substituted heterocycle; each R3 and R4 independently are halo, cyano, hydroxy, halomethyl, halomethoxy, carboxyl, nitro, amino, mono- or di(C1-6alkyl)amino, C1-6alkylcarbonylamino, aminosulfonyl, mono- or di(C1-6alkyl)aminosulfonyl, C1-6alkyl, C1-6alkyloxy, C1-6alkylcarbonyl, C1-6alkyloxycarbonyl; each R5 independently is C1-6alkyl, cyano or halomethyl; X is CR6R7, NR8, O, S, S(=O) or S(=O)2; aryl is optionally substituted phenyl; provided that the compound is other than (+/-)-3,3a,8,12b-tetrahydro-N-methyl-2H-dibenzo[3,4:6,7]-cyclohepta[1,2-b]-furan-2-methanamine oxalic acid. The compounds of formula (I) may be used as therapeutic agents in the treatment or the prevention of CNS disorders, cardiovascular disorders or gastrointestinal disorders.
Patent CZ-361098-A3 (CZ)
Title: Side channel blower, particularly for supply of combustion air in parking heating element of motor vehicle
Inventor: HUMBURG MICHAEL
IPC: F04D23/00
Filed: 1997-06-03
Abstract: A side channel blower (1), in particular for supplying combustion air to the auxiliary heater (2) of a motor vehicle, has a body (3) axially connected to an impeller wheel (4). The blower body (3) has an inlet channel (5), an outlet channel (6), a curved side channel (8) at the axial connection side (7) with the impeller wheel for connecting the inlet channel to the outlet channel, and a separating piece (9) which form together the 360 DEG  of the circumference of the axial connection side (7). The separating piece (9) is produced as a separate part, in particular as a casting. This is advantageous for the manufacture and for optimising the noise level and aerodynamics of the blower.
Patent CZ-408597-A3 (CZ)
Title: Purifying/healing processes, preparations and/or articles for agricultural plants
Inventor: MURCH BRUCE PRENTISS
IPC: A23N12/02
Filed: 1996-06-03
Abstract: Basic cleaning compositions using toxicologically-acceptable ingredients for cleaning fruits and vegetables are provided. Liquid formulations comprising detergent surfactant, such as oleate, alcohol ethoxylates, etc., and neutralized phosphoric acid are sprayed onto apples, lettuce and the like to remove soil and unwanted deposits, especially wax. Articles for applying the compositions to produce by spraying are disclosed. Use of the compositions for disinfectancy/sanitization of produce and cleaning/disinfectancy/sanitization of non-food inantimate surfaces are disclosed.
Patent CZ-9904235-A3 (CZ)
Title: Plastic article exhibiting antistatic properties
Inventor: BAUMANN FRANZ-ERICH DR
IPC: C08K3/04
Filed: 1999-11-26
Abstract: A polyamide molding composition (I) contains 3-30 wt.% of a conductive carbon black (II) having a DBP absorption value of 100-300 ml/100 g, a specific surface area of 30-180 m<2>/g, an ash content of less than 0.1 wt.% and a grit content of up to 25 ppm. An Independent claim is included for a polymeric article prepared from (I).
Patent ES-310213-A3 (ES)
Title: Syphons for flushing cisterns
IPC: E03D1/08
Filed: 1965-03-06
Abstract: In a syphon having a bell 1 from which extends a closed tube 2 for upward flow of water on operation and housing the top of the down pipe 6 for downward flow through the cistern bottom, a washer substantially filling the bell 1, around the pipe 6, liftable to initiate the syphon, the tube 2 is oval in crosssection with walls 3, 4 of part-circular form joined by substantially flat walls 5, the wall 3 being eccentric to the bell 1 and fitting snugly round the pipe 6, two parallel operating rods extending from the washer to pass slidably through holes 9 in the bell 1 on a line substantially perpendicular to the line joining the centres of curvature of the walls 3, 4. The walls 3, 4 are preferably semi-circular and of the same radius, the walls 5 being parallel and of a length such that the cross-sectional area in the tube 2 outside the pipe 6 is slightly less than that within the pipe 6 and the top of the tube 2 is shaped to provide an area between it and the top of the pipe 6 transverse to the water flow from the tube 2 to the pipe 6 during siphonage which is intermediate in size. On the walls 5 are ribs 8 to hold the pipe 6 in engagement with the wall 3 of the tube 2.
Patent SK-101693-A3 (SK)
Inventor: VAZNY JULIUS
IPC: H04B10/12
Filed: 1993-09-21
Abstract: Signály zo zdrojov akustických signálov (1,2, 3 až n) sú cez prevodníky AZD (la, 2a, 3a, až n) a optomodulátory (lb, 2b, 3b, až n) prenášané optovedeniami (OPI, OP2, OP3, až OPn) cez optomodulátory (Dl, D2, D3, až Dn) do riadiaceho centra (R) pričom signály z riadiaceho centra (R) sú prenášané cez optomodulátory (Ub, 12b, 13b, až n) optovedeniami (OPla, OP2a, OP3a až Opn) cez optodemodulátory (Dla, D2a, D3a, až Dn) a prevodníky (D/Al, DZA2, DZA3 
až D/An) do elektroakustických zariadení (EA1, EA2, EA3, ažEAn).
Patent SK-159796-A3 (SK)
Title: Method of producing a seamless hot-finished tube
Inventor: KRON HEINZ J
IPC: B22D11/00
Filed: 1995-06-13
Abstract: During the production of a seamless hot-finished tube from s teel with limited possibilities of changing the shape, particular ly of the steel for roller bearing, in which it is pre-processed and degassed, as well as deoxidized liquid steel of the required chemical composition molten in the zonal cast with an arbitrary c ross-cut and after separating from the zone a rode of the zonal c ast is divided into the used length, submitted to the transformat ion. The used length without pre-shaping, i. e. in the state afte r casting and without thermal processing (diffuse annealing), is heated up to the temperature of transformation and introduced to the device for production of pipes.
Patent SK-296792-A3 (SK)
Inventor: NEMECEK JIRI
IPC: F16D41/02
Filed: 1992-09-29
Abstract: Hnaná časť (4) spojky, pevne spojená s výstupným hriadeľom
(1) pohonného mechanizmu (10), a hnacia časť (5)
spojky, uložená voľne na (oinlo hrideli (1) sú od seba odtlačované
tlačnou pružinou (6). Axiálne fixovaný výstup z
pohonného mechanizmu (10) a výstup z privráteného boku
hnacej časti (5) ktoré sú voľne otočné uložené na hriadeli
(1), sú vybavené zaberajúcimi úkosovými prostiedkami
(13) s výškou úkosu väčšou ako je maximálna
vzdialenosť funkčných plôch hnacej časti (5) a hnanej
časti (4). Pri vonkajšom obvode hnacej časti (5) sú usporiadané
brzdiace prostriedky (7). Výstupy sú tvorené rúrkovým
osadením (11, 12). Ukosové prostriedky (13) sú
tvorené súmerným klinom tvaru V, pričom v jednom výstupe
je klin tvorený zárezom a v druhom výstupkom.
Patent SK-427090-A3 (SK)
Title: Device for determining surface topographical map of the furnace shaft charging stock
Inventor: MAWHINNEY DANIEL D
IPC: C21B7/24
Filed: 1990-09-03
Abstract: A radar probe including several individual scanning antennas is mounted in the wall of the furnace above the loading surface and performs a two-dimensional scanning of the entire loading surface.
Patent BE-1000883-A3 (BE)
Title: Werkwijze voor het verwijderen van een foutieve inslagdraad uit de gaap van een weefmachine en weefmachine die deze werkwijze toepast
IPC: D03D51/08
Filed: 1987-08-26
Granted: 1989-05-02
Abstract: Werkzijze voor het verwijderen van een foutieve inslagdraad uit de gaap  van een weefmachine, waarbij getracht wordt een foutief inslagdraadgedeelte, door het in een lusvorm inbrengen van een nieuwe inslagdraad, van de doeklijn los te maken en vervolgens uit de gaap te verwijderen aan de uittreezijde van de gaap, daardoor gekenmerkt dat deze werkwijze hoofdzakelijk bestaat in het detekteren of dit inslagdraadgedeelte inderdaad verwijderd is en indien die niet het geval blijkt te zijn, opeenvolgend het vanaf de intree- of inbrengzijde van de gaap verwijderen van de nieuw ingebrachte inslagdraad, het vanaf de inbrengzijde van de gaap lostrekken van het verstrengeld foutief inslagdraadgedeelte en het zodoende uit de gaap verwijderen van dit gedeelte.
Patent BE-1003121-A3 (BE)
Title: Procede et appareil de fabrication de pointes d'obturation pour canaux radiculaires dentaires.
Inventor: UBUKATA NOBORU
IPC: B29C67/00
Filed: 1989-04-04
Granted: 1991-12-03
Abstract: Fabrication d'une pointe d'obturation pour canal radiculaire dentaire, dans laquelle on utilise un élément rotatif (2) dont la surface de traitement extérieure (2a) est sous forme d'une surface courbe paralléle à son axe (X) et un élément mobile (3) dont la surface de traitement (3a) est prévue parallèlement à la surface (2a), au moins l'élément rotatif (2) étant amené à osciller dans sa direction axiale, une matière en forme de tige (4) destinée à former la pointe d'obturation passant dans la zone d'intevalle existant entre les surfaces de traitement des éléments (2 et 3).
Patent BE-1009418-A3 (BE)
Title: Nestable crate
IPC: B65D21/04
Filed: 1995-05-23
Granted: 1997-03-04
Abstract: Nestable crate, formed by a base (2) and sides (3-4-5-6), characterised by the fact that one or more of the sides (3-4) have side sections (7-8), that, at least partially, fit laterally into each other when such crates (1) are nested together.<IMAGE>
Patent BE-1012534-A3 (BE)
Inventor: NONAKA HIDEKI
IPC: A61B6/04
Filed: 1998-08-04
Granted: 2000-12-05
Abstract: Dans un système de lit de traitement pour thérapie par irradiation, un mécanisme d'entraînement en rotation (mécanisme d'entraînement en rotation isocentrique relative, mécanisme d'entraînement en rotation de roulis et mécanisme d'entraînement en rotation de tangage), servant à faire tourner le lit indépendamment autour de trois axes (i,r,p) perpendiculaires au patient et l'un à l'autre, et un mécanisme de transfert parallèle (mécanisme de transfert dans la direction de l'axe X, mécanisme de tranfert dans la direction de l'axe Z et mécanisme de transfert dans la direction de l'axe Y) servant à transférer le lit indépendamment parallèlement aux directions des trois axes (X,Z et Y) perpendiculaires à une surface de plancher et l'un à l'autre sont prévus. Ainsi, on peut réaliser l'irradiation dans des directions et à des distances arbitraires par rapport à un patient maintenu immobile sur le lit.
Patent BE-1012228-A3 (BE)
Title: Werkwijze voor het adaptief plooien van platen en inrichting die zulke werkwijze toepast.
IPC: G01B5/24
Filed: 1998-10-13
Granted: 2000-07-04
Abstract: Werkwijze voor het adaptief plooien platen, daardoor gekenmerkt dat tijdens het plooien van de plaat (12)  doorlopend de plooihoek (A) van de plaat (12) wordt gemeten; dat tegelijktertijd doorlopend de kracht wordt gemeten die de stempel (3) uitoefent op de plaat (12), dat de aldus opgemeten waarden worden doorgestuurd naar de besturingseenheid van de plooimachine, één en ander zodanig dat, nadat de kracht van de stempel (3) op de plaat (12) die oorspronkelijk vrij steil oploopt (43) tot een maximale waarde (44) die overeenstemt met een plooihoek (A) die groter is dan de gewenste plooihoek (A), dat men de kracht van de stempel (3) op de plaat (12) vervolgens laat afnemen tot een willkeurige lage waarde, dat men vervolgens uit de lijn (48) het verder verloop extrapoleert van deze lijn om de plooihoek (50) te berekenen die zou bekomen worden wanneer men de kracht van de stempel (3) op de plaat (12) volledig zou wegnemen; dat men de aldus berekende elastische terugvering (51) vermeerderd met het aantal graden (52) van de hoek (46) die men wenst te bekomen aftrekt om vervolgens de stempel (3) een verplaatsing te laten uitvoeren die zodanig groot is dat op basis...
Patent BG-48940-A3 (BG)
Title: Device for smooth starting of asynchronous motor
Inventor: MILENKOV SVETOSLAV J
IPC: H02P1/26
Filed: 1990-09-17
Abstract: The device is applied in electro-starts of crane and other mechanisms. It has a high cos PHI and an even thermal charge of the magnetic conductors' elements, which reduces the expenditure of active materials. The device consists of three equal inductional systems, each of which contains concentrically internal (1) and external (2) ferrous-magnetic pipe, to the edges of which ferrous-magnetic plastics (3) are placed for the radial closure of the magnetic circuit. Between the internal (1) and external (2) tubes, a coil (4) and an axially ventilation channel (5) are located. The internal tube (1) are attached ferrous magnetic bodies (6), magnetically connected with the edges of the pipes (1 and 2) and surrounded by ventilation channels (7 and 8), which are in free touch with environment.
Patent WO-02088709-A3 (WO)
Title: Procede servant a surveiller et a valider l'induction de stress d'etats pathologiques
Inventor: JACKOWSKI GEORGE
IPC: G01N33/68
Filed: 2002-04-29
Abstract: La présente invention concerne une méthode basée sur la biochimie servant à déterminer la présence et/ou à vérifier la libération dans le temps de biopolymères pour lesquels il a été démontré qu'ils jouent un rôle d'indication d'un état pathologique ou de prévision du développement dudit état pathologique.
Patent WO-9955856-A3 (WO)
Title: Enzyme d'acide nucleique de coupure d'un arn
Inventor: PERREAULT JEAN-PIERRE
IPC: A61K38/00
Filed: 1999-04-29
Abstract: L'invention porte sur un procédé de coupure d'un substrat d'acide nucléique par une enzyme d'acide nucléique en un site de coupure consistant à mélanger le substrat à l'enzyme. Le substrat comporte au niveau du site de coupure une séquence d'au moins 7 nucléotides dont au moins 6 nucléotides 3', et un nucléotide 5' de formule 5'-H'↓GNNHNN-3', dans laquelle: chaque N est un nucléotide identique ou différent; H est un nucléotide choisi parmi A, U, C et T; ↓ est le site de coupure; H' est un ribonucléotide choisi parmi A, U et C, et au sujet de laquelle: (i) le premier nucléotide 3' du site de coupure peut former une paire flottante avec l'enzyme, (ii) les deuxième, troisième, cinquième et sixième nucléotides 3' du site de coupure peuvent former avec l'enzyme des paires de base de Watson-Crick conventionnelles, (iii) le quatrième nucléotide 3' du site de coupure peut former avec l'enzyme des paires de base de Watson-Crick non conventionnelles, et (iv) le premier nucléotide 5' du site de coupure ne peut former de paire de base avec l'enzyme; de plus, l'enzyme comporte une portion se fixant au substrat et capable de former une paire de base avec les six nucléotide 3' du site de coupure du substrat, ladite portion comportant la séquence 3'-UNNXNN-5' dans laquelle chaque N est un nucléotide identique ou différent; X est un nucléotide choisi parmi T, U, A et G et qui lorsque le substrat s'y fixe entraîne la coupure du substrat au site de coupure.