baber/WOPTO huggingface dataset:
Patent HU-210948-B (HU)
Inventor: CSIKOS BELA
IPC: H02G1/00
Filed: 1991-07-22
Abstract: A találmány tárgya mágneses árnyékolású szerelőszék nagyfeszültségű és nagyterhelésű, szabadvezetéki és alállomási áramvezetőn és szigetelőláncon feszültség alatt munkát végző szerelők mentesítésére a káros villamos hatásoktól. Lényege, hogy vázszerkezete és belső nyeregülése van, amelyek nagy permeabilitású vaslemezzel, példá- ul transzformátorlemezzel vannak burkolva, el van látva fel- és leszerelhető elülső és/vagy oldalsó munkavégzési nyílással, amely(ek) előre nyúló vázszerkezettel és hajlított transzformátorlemezzel és/vagy átlátszó és áthatolható acél láncfüggönnyel zárhatóra van(nak) kialakítva, továbbá a szerelő be- és kiszállásához nyitható-zárható nyílás van kiképezve. HU 210 948 A leírás terjedelme: 18 oldal (ezen belül 9 lap ábra)
Patent HU-200479-B (HU)
Title: Process for producing peptides having immunosuppressive activity and pharmaceutical compositions comprising same
Inventor: CARDIN ALAN DOUGLAS
IPC: C07K1/04
Filed: 1988-06-28
Abstract: Novel peptides having a fragment containing 2 or 3 Arg or Lys residues and having a fragment containing 2 or 3 Gly, Leu, Ile, or Thr residues adjacent to the carboxy end of the first fragment and having amino and carboxy tails consisting of chains made up of any amino acids are immunosuppressant agents and can suppress the lymphocyte system by suppressing lymphocyte proliferation. 
The formula is  as  follows: 
      Tn-A-B-C-D-Tc 
wherein 
      Tn is an amino terminal residue selected from hydrogen, one or two alkyl groups of from 1 to 6 carbon atoms, one or two acyl groups of from 2 to 10 carbon atoms, carbobenzyloxy, and  t -butyloxy­carbonyl; 
      A is a peptide fragment containing from 3 to 12 residues of any amino acid; 
      B is a peptide fragment containing 2 or 3 amino acid residues selected from Arg and Lys; 
      C is a peptide fragment containing 2 or 3 amino acid residues selected from Gly, Leu, Ile, and Thr; 
      D is a peptide fragment containing from 1 to 12 residues of any amino acid; and 
      Tc is a carboxy terminal residue selected from OH, (C₁-C₆)alkoxy, amino, mono- or di-(C₁-C₄)alkyl substituted amino, and benzylamino.
Patent HU-191133-B (HU)
Inventor: LISZIEWICZ ANTAL
IPC: G02B3/06
Filed: 1984-09-24
Abstract: különböző törésmutatójú szférikus felületek határolta
leképzőrendszert, valamint a leképzőrendszer optikai
tengelyére egyrészt mint forgástengelyre központos
elhelyezkedésű r és R sugarú körrel megadott toruszfelületeket,
másrészt arra merőleges síkfelületek határolta
elemet.
Az optikai rendszert meghatározó matematikai
összefüggések a következők:
R = 2pcos u · (Ap + sin 2u)
ahol
(η - 1) n[P-(r-e) sin 2u]
[e + n(r - e)] · (np + e sin 2u)ahol
e: a két kör sugarának távolsága, p: a fénysugár
útjának megfelelő 2u szöget bezáró tört-egyenes töréspontjának
merőleges távolsága az optikai tengelytől,
és n a törésmutató..
Patent HU-208853-B (HU)
Inventor: ADAMIS GEZA
IPC: E02D31/00
Filed: 1989-11-02
Abstract: A találmány szerelt teknőszigetelés építményekhez folyadék és/vagy gáz és/vagy sugárzás elleni védelem céljára, amely teknőszigetelés tartószerkezetet, szigetelőréteget, valamint a szigetelőréteget védő lemezt tartalmaz, és illesztő hézagok közbeiktatásával egymáshoz sorolt előregyártott vasbeton táblákból van összeállítva. Az előregyártott vasbeton táblák legalább egyik felületükön szigetelőréteggel, pl. szigetelő bevonattal és/vagy szigetelő burkolattal legalább részben el vannak látva. Jellegzetessége, hogy az előregyártott vasbeton táblák (11) kapcsoló idomok segítségével és/vagy az illesztő hézagok (12) kitöltésével a belső teret kívülről és alulról is közrefogó, adott esetben zárt vasbeton teknővé (1) vannak összeszerelve. Az előregyártott vasbeton táblák (11) szigetelő rétegei (21) a vasbeton teknő (1) belső oldalán vannak. Az illesztő hézagok (12) mentén, adott esetben illesztő lemezek (22) segítségével egymáshoz vannak erősítve, és ezáltal folytonosan zárt szigetelő teknőt (2) képeznek, a vasbeton teknő (1) pedig a zárt szigetelő teknő (2) tartószerkezetét és egyúttal annak védő lemezét alkotja. HU 208 853 B A leírás terjedelme: 8 oldal (ezen belül 3 lap ábra)
Patent HU-205260-B (HU)
Title: Process for producing composition for diminishing weight
Inventor: BURSICS LASZLONE
Filed: 1989-11-06
Abstract: Wt. reducing prepn. contains (all wt.%) either (a) 5-7 elder-flower, 4-6 juniper berries, 5-7 blood-wort, 5-7 nettle, 5-7 sweet fennel seeds, 5-7 dandelions root, 6-8 blackthorn flower, 5-7 coriander seed, 5-7 caraway-seed, 20-22 corn-silk 10-12 black alder-bark, 3-4 borage root 5-7 mustard seed, 5-7 field-pansy; or (b) 8-12 elder-flower, 8-12 blood-wort, 8-12 sweet-fennel, 8-12 caraway seed, 3-035 black-alder bark, 15-18 black-thorn, 8-12 corn-silk, 8-12 field pansy. - Ingredients (a) or (b) are ground to 1.5-2.2 dia. size, mixed and tabletted 2-5 pts. wt. hot water are added to make tees
Patent IT-1234032-B (IT)
Title: Oil pressure actuator to control the angular position of a shaft.
Inventor: ZUCCHI WILLIAM
IPC: G05D/
Filed: 1989-03-17
Granted: 1992-04-24
Abstract: Oil pressure actuator to control the angular position of a shaft including, through manufacture, a balance lever on the control shaft and, on the opposite end, respective spherical heads each of which has a pair of telescopic, propeller elements acting on it. Each propeller element is opposing between them and controlled in such a way that the other two elements are passive while the two diagonally opposite elements to the control shaft are active and vice versa.
Patent IT-1043899-B (IT)
Title: Polypropylene holder for windshield wiper blade - with discontinuous under-cut groove for the blade flange
IPC: B60J/
Filed: 1973-06-26
Granted: 1980-02-29
Abstract: The blade holder curves naturally to present a convex side whilst the concave side is provided with a configuration for the wiper blade, which configuration has a parallel row of attachments on or near each edge of the concave side with each attachment extending away from the concave side and then turned inwards so that an undercut zone is formed for the wiper blade flange.
Patent IT-1242583-B (IT)
Title: Improvement in the mobile systems for washing vehicles, especially vans, refrigerator trucks, coaches and similar
Inventor: PIZZI ANTONIO
IPC: B60S/
Filed: 1990-10-08
Granted: 1994-05-16
Abstract: The apparatus is made up of a truck, preferably three- wheeled, which supports a cylindrical brush rotating around its own axis, which can be displaced by the rotation of its support frame around a vertical axis by autonomous and independent control and motorization. <IMAGE>
Patent LV-13143-B (LV)
Title: Vehicle used to apply chemical compounds to wood
Inventor: RODRIGUEZ RAMOS RAFAEL
IPC: B27K3/50
Filed: 2003-01-03
Abstract: The invention relates to a vehicle comprising toluene (40- 70 %), xylene (6-40 %), benzophenone (3-18 %), butylglycol (2-9 %), cetyl acetate (1-7 %) and methanol (0.3-4 %). The inventive vehicle has a high wood penetration index and can be used to prepare wood treatment compositions which contain one or more chemical compounds, e.g. insecticides and/or fungicides, and which are used to treat or prevent damage caused by attacks by biological agents that are harmful to wood.
Patent LV-14983-B (LV)
Title: Method for producing intermediates of phenibut
Inventor: LIEPIŅŠ VILNIS
IPC: C07D207/26
Filed: 2013-10-15
Abstract: The invention describes a new, technologically simple method for obtaining benzalmalonic acid diethyl ether and cyanobenzylmalonic acid diethyl ether, which are phenibut production semi-products.
Patent LV-11088-B (LV)
Title: Method of producing of glazed sweet cottage cheese and the sweet cottage cheese obtained by this method
Inventor: MAZZALITE RITA
IPC: A23C19/00
Filed: 1995-04-12
Abstract: This production method includes the preparation of raw materials, preparation of the curd mass from freshly made, non-frozen, homogeneous consistency curd, prepared by the acid-ferment method, the formation of cheeses and cooling in the cooling camera with the air temperature from -15 degrees C to -20 degrees C, the coating of cheeses and additional cooling. The prescription of the cheeses is given
Patent LV-11398-B (LV)
Title: Induction electrical machine
Inventor: LEVINS NIKOLAJS
IPC: H02K17/28
Filed: 1995-08-04
Abstract: The innovation relates to the wind power industry, specifically to electrical asynchronous devices used as wind power generator devices and operating parallel to the network. The goal of the innovation is to make it possible to use it as a generator by connecting it in one phase network and improving the energetic parameters. The asynchronous electrical device (fig.1) has a stator 1, two phase winding phases 2 and 3, a short-shut rotor 4, a capacitor 5 and an air gap 6 whose size is<IMAGE>where K9 is a ratio equal to the proportion of the electrical drive power induced in the stator winding to the network voltage; Kg - air gap ratio; Kμ - magnetic circuit saturation ratio; P - generator's nominal power, W; D- stator's turning diameter, m; I - stator bundle length, m; f - network current frequency, Hz; Bg - magnetic induction in the air gap, T.<IMAGE>
Patent ME-00934-B (ME)
Inventor: DELAY-GOYET PHILIPPE
IPC: A61P25/00
Filed: 2008-04-16
Abstract: Predmetni pronalazak se odnosi na upotrebu 4-ciklopropilmetoksi- N -( 3 , 5-dihloro-1- oksido-piridin-4-il)-5-(metoksi)- piridin-2-karboksamida   za dobijanje leka za lečenje trauma kičmene moždine.
Patent MX-168935-B (MX)
Title: Extrusor
Inventor: KIM HEUNG-TAI
IPC: B29C48/62
Filed: 1987-06-05
Abstract: La presente invención se refiere a un transportador de husillo para convertir material plástico de fase sólida a una forma líquida o viscosa, que comprende un núcleo; paletas montadas en cada uno de sus extremos definiendo una sección de alimentación; paletas montadas en el otro extremo definiendo una sección de dosificación; paletas montadas en el núcleo entre la sección de alimentación y la sección de dosificación que definen una sección de fusión para plastificar el material, cambiar el material plástico en una fase fluida y el núcleo en la sección de dosificación, tiene una sección transversal poligonal que presenta componentes productores de fuerza y plastificantes en cualquier vuelta de las paletas, que generalmente son paralelas a la rotación del husillo.
Patent MX-170455-B (MX)
Title: Producto de proteina
Inventor: SINGER NORMAN SOL
IPC: A23J3/00
Filed: 1987-12-17
Abstract: La presente invención se refiere a una macrocoloide proteináceo, dispersable en agua, que comprende partículas, substancialmente no agregadas, de proteínas desnaturalizadas, que tienen en un estado seco, una distribución del tamaño de partículas con diámetro medio que varía de 0.1 a 2.0 micras, aproximadamente, con menos de un por ciento del número total de partículas excediendo de 3.0 mciras de diámetro y en que la mayoría de dichas partículas son generalmente esferoidales, cuando se ven con un poder de amplificación de 800 bajo un microscopia de luz estándar, las partículas, en un estado hidratado, forman dicho macrocoloide, que tiene un carácter organoleptico substancialmente grato, de tipo emulsión.
Patent NO-165168-B (NO)
Title: Universell grensesnittenhet.
Inventor: CHAN STEVEN S
IPC: G11B27/10
Filed: 1983-03-29
Abstract: En universell grensesnittenhet som er innrettet for å frembringe utgangssignaler i et hvilket som helst av et antall forskjellige signalformater, lagrer informasjon angående hver av de forskjellige tilgjengelige formater. Når signaler skal avgis til en spesiell anordning, gjer identitetsdata angående vedkommende anordning det mulig å lese ut anordningens spesielle signalformatfordringer fra den lagrede informasjon.En signalprosessor er anordnet og innrettet for å reagere. på denne informasjon med å frembringe utgangssignaler i vedkommende format. Disse utgangssignaler overfores til anordningen gjennom en omkoblerkrets som er hensiktsmessig koblet til anordningen for å frembringe korrekt polaritet.
Patent NO-165765-B (NO)
Inventor: RELLERMEYER HEINRICH
IPC: C21C1/02
Filed: 1985-05-14
Abstract: A method and composition for desulfurization of hot metal is disclosed. To the hot metal there is added a composition comprising calcium carbide, a hydrogen releasing compound and magnesium.
Patent NO-162891-B (NO)
Inventor: ANDERSSON OLOF INGVAR
IPC: A47B57/16
Filed: 1987-09-22
Abstract: This invention relates to a sheet metal shelving comprising posts (10) and shelves (11). The posts comprise a waist (12) which via a first flange (13) is connected to a second flange (14). The waist abuts a first edge part (18) of the shelf whereas the second flange (14) engages recesses (29,30) in a second edge part (19) of the shelf (11). The second edge part (19) forms a closed torsion resistant profile with several in vertical direction separated extending flanges (22,24) having said recesses (29,30).
Patent NO-178674-B (NO)
Inventor: BADOUREAUX JEAN-PIERRE
IPC: F16L19/03
Filed: 1990-01-29
Abstract: This method aims to make a tight joint for a rigid pipe of the type comprising an internally shouldered nut (4) engaged on the pipe (2) to be joined, a collar (2a) provided at the end to be joined of this pipe (2) and making the nut (4) be captured by this pipe and a threaded fitting (3) integral with the opening of the device or other component to which this pipe (2) must be joined and on which the nut (4) is intended to be screwed, the front face (3a) of this fitting (3), against which the collar (2a) of the pipe (2) is applied, having a seal (5) disposed in an annular groove (5a) acting as a housing for it, this method being of the type in which the collar (2a) of the pipe (2) is produced by snap-riveting, its end for joining being gripped, after engagement of the shouldered nut (4), in an opening die (6) having a die cavity shouldered to the profile of the collar (2a) desired. 
<??>The die cavity of the opening die (6) is constituted by a shouldered collet (8) intended to remain captive in the joint, between the collar (2a) and the shouldered nut (4), the cylindrical skirt (8a) of this collet (8) being intended to be disposed between the pipe (2) and the inner shoulder (4a) of the nut (4) while its outer shoulder (8a) is intended to rest on the inner shoulder (4a) of the nut (4). 
<IMAGE>
Patent NO-176009-B (NO)
Inventor: FISCHER ARTUR
IPC: B23B51/12
Filed: 1990-02-27
Abstract: 2.1. To produce drilled holes to a defined depth, drills can be used which have a depth stop on the shank. 
<??>2.2. To avoid damage to the wall surface when the depth stop bears against it, a depth stop with an elastic damping element is proposed. 
<IMAGE>
Patent NO-176526-B (NO)
Inventor: FREUDENBERG ENRIQUE
IPC: D21H17/37
Filed: 1991-01-24
Abstract: In a process for making paper, paperboard and cardboard, paper pulps containing interfering materials are dehydrated in the presence of polymers which, as characteristic constituents, contain copolymerised units of the formulae 
<IMAGE>
 with R<1> and R<2> = H or C1- to C3-alkyl, and have K values of at least 130, the polymers containing less than 10 mol% of units of formula II.
Patent NO-179103-B (NO)
Inventor: MARFAT ANTHONY
IPC: A61K31/38
Filed: 1991-07-09
Abstract: Heteroaryl-3-acyl-2-oxindoles are claimed, of formula (I) where R1 = thienyl, furyl or 2-thiazolyl; R2 = thienyl, furyl or gp. of formula (i), where X = H, F, Cl, 1-4C alkyl, 1-4C alkoxy, 1-4C alkylthio, NO2 or CF3; Y = H, F or Cl; R3 and R4 each = H, F, Cl, Br, 1-4C alkyl, 1-4C alkoxy, 1-4C alkylthio, NO2 or CF3. - Also claimed are prodrugs of (I), e.g., enol esters and ethers of formula (II), where R5 = alkanoyl, cycloalkylcarbonyl, phenylalkanoyl, chlorobenzoyl, methoxybenzyl, phenyl, thienoyl, omega-alkoxycarbonylalkanoyl, alkoxycarbonyl, phenoxycarbonyl, 1-alkoxyalkyl, 1-alkoxycarbonyloxyalkyl, alkyl, alkylsulphonyl, methylphenylsulphonyl, or dialkylphosphonate.
Patent NO-178301-B (NO)
Inventor: WANNAMAKER MARION WOODS
IPC: A61P31/04
Filed: 1992-03-26
Abstract: Compounds of the formula <CHEM>  wherein     E   is O or S; G   is A-Y-B-D, A-Y-D, A-D or D1 wherein A   is a saturated C1-C14 alkylene of straight or branched chain cornfiguarion; Y   is oxygen, sulfur, sulfinyl or sulfonyl; B   is a saturated C1-C14 alkylene of straight or branched chain configuration; D   is a C1-C4 saturated or unsaturated alkyl of straight or branched chain configuration, -CF3, -CHF2, -CH2F, or phenyl; and D1   is H, -CF3, -CHF2, -CH2F, -CH3 or phenyl. are useful as inhibitors of cholesterol biosynthesis and as agents which lower total serum cholesterol in patients in need thereof.
Patent YU-46478-B (YU)
Inventor: KOHARA T
IPC: C08F10/00
Filed: 1988-10-05
Abstract: A catalyst for olefin polymerization which comprises:   (A) a catalyst component obtained by reacting (a) pentadiene or a derivative thereof with (b) an alkali metal and subsequently reacting the reaction product with (c) a titanium compound or zirconium compound, and   (B) aluminoxane. t
Patent RS-50271-B (RS)
Inventor: BANHOLZER ROLF
IPC: A61K31/46
Filed: 2001-12-12
Abstract: Postupak za pripremanje tiotropijumbromida, formule (I), naznačen time, što se tropenolestar, formule (VII), epoksiduje u skopinestar, formule (IV), a on se, pomoću metilbromida, kvaternizuje u tiotropijumbromid (I). Prijava sadrži još 10 patentnih zahteva.
Patent ZA-801052-B (ZA)
Title: Apparatus and method for the determination of biocide concentration in aqueous systems
Inventor: PEACOCK D
IPC: G01N33/18
Filed: 1980-02-25
Abstract: A colorimetric method for determining the concentration of aldehyde release biocides when present in aqueous systems (e.g. oil-water emulsions used in metal working) which can be carried out by personnel unskilled in chemical analysis, comprises subjecting a dilute sample of the aqueous system to a MBTH test procedure for determination of aldehydes, and matching the colour developed, either when viewed through a yellow filter or in the presence in the sample of a yellow colouring agent with a colour scale showing the relationship between the colours obtained by the method, to a series of samples containing known concentrations of biocide. The invention includes apparatus for carrying out the method, e.g. a kit containing suitable quantities of the reagents (1,2) devices for measuring out small quantities of the reagents (4, 5, 6) and a colour chart (8).
Patent ZA-814121-B (ZA)
Title: Borehole charging method
Inventor: JORGENSON G
IPC: F42D1/08
Filed: 1981-06-18
Abstract: Method of charging a borehole (15) with a column of explosives (as well as a blasting method) wherein the explosive charge is detonable simultaneously or in time-delay sequence by means of two or more electrically initiated detonators. The method requires providing a loop (8) of an insulated electrical conductor throughout the length of the borehole and, as the borehole is charged with explosives, sliding electrically actuable (time-delay) detonators along the looped wire (8) so as to be positioned at intervals throughout the borehole (15). The detonators are electrically coupled to the looped wire (8) by means of slidable toroidal transformer cores. The wire loop (8), in turn, is electromagnetically energized by means of a second transformer core (4) and an A. C. energy source (1).
Patent ZA-815368-B (ZA)
Title: Improved chrome utilization in chrome tanning
Inventor: PRENTISS WILLIAM CASE
IPC: C14C3/04
Filed: 1981-08-05
Abstract: In a method of chrome tanning, after unhairing and bating, a water soluble amino compound is provided in an acidified hide stock solution prior to or simultaneously with addition of a chrome tanning agent. The amino compound has substantially no tanning properties of its own but is capable of enhancing the tanning afforded by the chrome tan. The amount of chrome tanning agent required in the charge, and therefore the amount of chrome in the exhaust liquor or effluent, is thereby substantially reduced, thus providing greater control over pollution due to chrome in leather manufacturing operations.
Patent ZA-849963-B (ZA)
Title: Disinfectants
Inventor: LANGFORD PHILIP WEBSTER
IPC: A01N37/16
Filed: 1984-12-20
Abstract: The stability of disinfectant concentrates comprising peracetic or perpropionic acid, hydrogen peroxide acetic or propionic acid, water and a wetting agent is improved when an alkyl aryl sulphonic acid is employed as the wetting agent. The preferred wetting agent is dodecyl benzene sulphonic acid.
Patent ZA-864041-B (ZA)
Title: Pyridine derivatives,their preparation and their use
Inventor: HEGE HANS-GUENTHER
IPC: A61P9/06
Filed: 1986-05-30
Abstract: Pyridine derivatives of the formula    <IMAGE>  I  CH2CH2NHR4,  where R1 to R4 have the meanings stated in the description, and their preparation. The substances are useful for treating disorders.
Patent ZA-868418-B (ZA)
Title: Coating compositions
Inventor: DAVIES STEPHEN PARRY
IPC: C09D157/00
Filed: 1986-11-04
Abstract: This invention provides a water-borne coating composition comprising a sterically stabilised dispersion in an aqueous medium of a non-ionic film-forming polymer containing oxirane groups and an aminosilane of formula (1) where a, b and c are from 2 to 4;d and e are from 0 to 3f is from 1 to 3;R¹ is C<sub>1-3</sub> alkyl or C<sub>1-3</sub> alkoxy andR² and R³ are C<sub>1-3</sub> alkoxy.
Patent ZA-875122-B (ZA)
Title: Alumina hydrates
Inventor: BROWN STEPHEN CLIFFORD
IPC: C01F7/023
Filed: 1987-07-14
Abstract: Alumina hydrate particles have a high surface area and low dispersity and may have a low soluble soda content. They may be made by milling a liquid suspension of alumina hydrate, subjecting the milled suspension to classification into coarse and fine fractions, recycling the coarse fraction to the mill and recycling the fine fraction to the classification stage. A narrow particle size distribution is obtained.
Patent ZA-877159-B (ZA)
Title: Wire rope
IPC: D07B1/08
Filed: 1987-09-23
Abstract: A wire rope is constructed so that the twisting moment generated in the rope per unit load decreases from one end of the rope to the other . This is accomplished by varying the length of lay along the rope.
Patent ZA-879376-B (ZA)
Title: Tamper indicating package
Inventor: GREGORY JAMES LEWIS
IPC: B65D55/02
Filed: 1987-12-14
Abstract: A tamper indicating package (20) comprising a one-piece molded closure (23) of plastic which threads onto a container (21) such that when the closure is unthreaded, a tamper-indicating ring (28) becomes separated from the lower end of the closure skirt. The indicating ring or band (28) is joined to the closure along a weakened frangible line and a flexible stop ring (31) is formed within the band (25) and extends inwardly and upwardly when the closure is applied to a container finish. The container finish (22) has a first radial bead (37), a second radial bead (39) spaced axially below the first bead (36), and an intermediate tapered or concave surface between the first radial bead and second radial bead. A further surface (41) extends from the second bead (39) axially downwardly and radially inwardly and the flexible end of the stop ring (3) rests on this surface between the two beads, when the closure is applied. When the closure is unthreaded to remove it, the free end (32) of the stop ring (31) passes over the second bead (39) into the recess formed by the surface between the two beads and the frangible portion (29) is broken leaving the ring and band in this position. Upon subsequent reapplication of the closure (12), the closure skirt (25) engages the band (28) causing the band to pass over the second bead (39) on the finish so that the band falls away but remains on the container to indicate that the band has been severed.
Patent ZA-906548-B (ZA)
Title: Metal lids for sealing containers
Inventor: MOREAU GERARD
IPC: B65D43/02
Filed: 1990-08-17
Abstract: Metallic lid comprising a fragmented (divided) peripheral skirt for leaktight crimping. According to the invention, the central part (12) of the lid, which is located below the level of the peripheral skirt in which the crimping tabs (17) are defined, comprises projections (20) oriented substantially towards the middle of the said central part. Preferably, a peripheral groove is also made between the projections and the said skirt. <IMAGE>