baber/WOPTO huggingface dataset:
Patent FR-2518007-A1 (FR)
IPC: B28B7/00
Filed: 1982-12-16
Abstract: A mould table for precast concrete slabs provided with lateral pouring grooves essentially consists of a base plate (1), at least two longitudinal mould walls (2) as well as several transverse mould walls (3) bridging the intermediate space between two longitudinal mould walls (2) and standing on the base plate (1). The transverse mould walls (3) are fixed in position in the horizontal directions (7, 11) by positive-locking connections effective relative to the longitudinal mould walls (2). In the casting position, the positional fixing of the transverse mould walls (3) against lifting-out in arrow direction (24) is effected solely by core tubes of the moulding machine which pass through their through-openings (9). The part of the transverse mould walls (3) which fills the undercut (12) between the groove-forming prominence (8) of a longitudinal mould wall (2) and the base plate (1) is designed as a separate mould body (13) which is immovably held in its casting position by the adjoining transverse mould wall (3). After the concreting operation and the withdrawal of the core tubes from the through-openings (9), the transverse mould walls (3) can be pulled off the mould table in arrow direction (24) and can be cleaned of adhering, not yet set concrete residues simply by spraying them off. The mould bodies (13) can then also be removed immediately.
Patent FR-2519395-A1 (FR)
Title: Matiere pour coussinets a base d'alliage aluminium-silicium
Inventor: PRATT GEORGE CHRISTOPHER
IPC: F16C9/02
Filed: 1982-12-29
Abstract: L'INVENTION CONCERNE UNE MATIERE POUR COUSSINETS A BASE D'ALLIAGE ALUMINIUM-SILICIUM. ELLE CONCERNE EN PARTICULIER UN COUSSINET COMPRENANT UN SUPPORT EN METAL AYANT UNE COUCHE D'APPUI COMPRENANT UN ALLIAGE ALUMINIUM-SILICIUM CONTENANT DU ZINC, POUR UTILISATION COMME GARNITURE DE COUSSINET SUR UN SUPPORT D'ACIER. LA TENEUR EN SILICIUM EST COMPRISE ENTRE 1 ET 4 EN POIDS ET LA TENEUR EN ZINC EST COMPRISE ENTRE 9 ET 11 EN POIDS. UTILISATION NOTAMMENT POUR DES PALIERS DE VILEBREQUINS.
Patent FR-2519999-A1 (FR)
Title: Compositions formees de liquide huileux et de produits en suspension dans un liquide polaire et leur procede de preparation
Inventor: MACKLES LEONARD
IPC: C09K23/00
Filed: 1983-01-12
Abstract: LA PRESENTE INVENTION A POUR OBJET UNE COMPOSITION LIQUIDE CONTENANT UN AGENT DE SUSPENSION LIQUIDE HUILEUX RENFERMANT, EN SUSPENSION DANS SON SEIN, DE FINES PARTICULES DE LIQUIDE POLAIRE NON MISCIBLES AVEC LEDIT AGENT DE SUSPENSION; CES FINES PARTICULES ETANT MAINTENUES EN SUSPENSION DANS LEDIT AGENT DE SUSPENSION.
Patent FR-2539309-A1 (FR)
Title: Safety pit for hazardous gymnastics exercises
IPC: A63B6/02
Filed: 1983-01-18
Abstract: A safety pit for hazardous gymnastics exercises, forming a cavity 1 in which a net 4 is stretched in a horizontal position, and on which net is arranged a layer of foam formed by a foam mattress 9 and/or foam blocks 10 placed in a jumble and occupying the upper volume of the said cavity 1, so that the upper part of the layer of foam is located substantially at the level of the upper peripheral edge 2a of the pit, which comprises, moreover, shock-absorbing means arranged between the said net 4 and the bottom 3 and distributed in the pit, is characterised in that the net 4 is stretched horizontally on the side of the upper part of the pit at a distance of between 15 cm and 60 cm from its upper peripheral edge 2a, in order to obtain a layer of foam having a minimum thickness which is, however, sufficient to cushion, in combination with the net and the said shock-absorbing means, the fall of the gymnast, to prevent the effect of flattening of the foam and to favour its expansion after having been compressed, in order to return to its original configuration. The invention applies to halls or playing fields where hazardous gymnastics exercises are performed.
Patent FR-2529869-A1 (FR)
Title: Dispositif a poignee pour transporter des recipients ou autres objets
Inventor: PICOZZA AUGUSTO A
IPC: A45F5/10
Filed: 1983-03-07
Abstract: DISPOSITIF DE TRANSPORT, UTILISABLE POUR SUPPORTER UN RECIPIENT DE MANIERE AMOVIBLE ET COMPRENANT UN CADRE 30 DESTINE A RECEVOIR UN RECIPIENT, DES DISPOSITIFS A COURROIES FLEXIBLES 34 ET 36 COMPRENANT DES ELEMENTS DE POIGNEE 42, 44 QUI COMPRENNENT CHACUN UN PANNEAU 58 ALLONGE ET DES MOYENS FORMANT UNE CAVITE, LATERALEMENT AU PREMIER COTE DU PANNEAU SUSDIT, CETTE CAVITE PRESENTANT DES DIMENSIONS LUI PERMETTANT DE RECEVOIR ET DE LOGER LE PANNEAU 58 DE L'AUTRE ELEMENT DE POIGNEE.
Patent FR-2542334-A1 (FR)
Title: Automatic process for the marking of piece ends during the production of fabrics and improved weaving installation for carrying it out
IPC: D03D49/50
Filed: 1983-03-08
Abstract: The invention relates to a process and an installation for the automatic marking of piece ends during the production of a continuous fabric web. This process involves equipping the loom with a member for controlling the passage of the weft yarns 5, stopping the passage of the weft yarns by the action of a piece-end signal on this member 5, ensuring that the loom functions so as to weave the warp yarns only, and restoring the passage of the weft yarns after the weaving of the warp yarns of a specific length. The marking between pieces is thus ensured by the production of a thin place consisting only of warp yarns.
Patent FR-2545525-A1 (FR)
Title: Automatic device for operating a rising barrier
IPC: E01F13/06
Filed: 1983-05-05
Abstract: The device comprises a frame 1 and a shaft 5 mounted on bearings 6, 7 and equipped with a lever 9 operating a barrier 2 fastened to a support fixed to the end of the shaft 5. The lever 9 is driven by a rack 11 - and - pinion 12 assembly keyed on the output shaft of a geared motor 14; the rack 11 is guided in an oscillating block 25 mounted on the shaft 13; a safety device 16 is interposed between a ball joint 15 mounted on the end of a lever 9 and the end of the rack 11, and it comprises a displacement sensor which interrupts the electrical supply to the geared motor when an obstacle to the closing of the barrier is encountered. The ends of travel of the lever 9 are monitored by means of displacement sensors 17, 18, 19 detecting the passage of the said lever 9.
Patent FR-2527758-A1 (FR)
Title: Verre-regard pour four qui a une coloration bleu fonce et une grande absorption dans l'infrarouge
Inventor: BEHR WERNER
IPC: C03C1/10
Filed: 1983-05-26
Abstract: L'INVENTION CONCERNE UN VERRE-REGARD POUR FOUR, VERRE QUI EST DE COULEUR BLEU FONCE ET QUI A UNE GRANDE ABSORPTION DANS L'INFRAROUGE. CE VERRE FILTRANT PROTECTEUR EST CARACTERISE EN CE QU'ON L'A FONDU EN AJOUTANT DES REDUCTEURS, TELS QUE DU CARBONE, DES HYDROCARBURES OU DES METAUX, A UN MELANGE DE BASE POUR VERRE RENFERMANT DES COMPOSES DU FER. LA COULEUR BLEUE DE CE VERRE EST OBTENUE PAR EXEMPLE PAR ADDITION DE COMPOSES DU COBALT AU MELANGE. UN VERRE CONFORME A L'INVENTION A PAR EXEMPLE, DANS LE VISIBLE, LA COURBE DE TRANSMISSION TYPIQUE DU COBALT QUI EST REPRESENTEE SUR LE DESSIN.
Patent FR-2532340-A1 (FR)
Title: Teinture et impression des non-tisses
Inventor: TROESCH JURG
IPC: C09D11/037
Filed: 1983-08-19
Abstract: L'INVENTION A POUR OBJET UN PROCEDE DE PREPARATION DE NON-TISSES TEINTS OU IMPRIMES, Y COMPRIS LE PAPIER TISSU. SELON LE PROCEDE DE L'INVENTION, POUR LA TEINTURE OU L'IMPRESSION ON UTILISE, COMME AGENT COLORANT, UNE CHARGE QUI A ETE TEINTE AVEC UN COLORANT CATIONIQUE.
Patent FR-2532684-A1 (FR)
Title: Method for producing an underground construction.
Inventor: MOUSSIAUX GUSTAVE
IPC: E21D9/00
Filed: 1983-08-30
Abstract: On either side of the construction to be produced, the elements which will constitute, partially or completely, the lateral walls of the construction are buried obliquely by sinking or hammering for example, or alternatively two lateral holes are obliquely hollowed out in order subsequently to produce therein the oblique lateral walls of the construction so that at the upper end these two lateral walls are only a small distance apart. Application to the production of relatively small-sized narrowings.
Patent FR-2556281-A1 (FR)
Title: Machine for depositing a ring of material on the tips of pharmaceutical or suchlike ampoules; assembly of such machines
IPC: A61J1/06
Filed: 1983-12-13
Abstract: Machine for depositing a ring of material on the tips of pharmaceutical or suchlike ampoules, said material being pasty or liquid at the time it is deposited on said tips and being capable of subsequently being hardened, characterised in that it comprises means 4, 5, 6 for transporting said ampoules 3 in a line, these being arranged perpendicularly to their direction of advance; at least one reservoir 9 containing said material, and means 8 for transferring said material between said reservoir 9 and at least one of the tips of said ampoules 3.
Patent FR-2557285-A1 (FR)
Inventor: MOREAU PIERRE
IPC: F42B5/313
Filed: 1983-12-22
Abstract: 1. An obturator-base for medium-or large-caliber ammunition made of a non-metallic material with a modulus of elasticity ranging from 1000 to 10 000 MPascals, said base comprising a tubular portion (1) integral with the combustible case (10) of the ammunition, the case being engaged into the tubular portion and a rear disk (2) having an axial bore (4) intended to accommodate a primer-tube, characterized in that the front part of the tubular portion pressenting a bevel (5) slanted from the inside to the outside, without any point of contact with the outer surface of the case, the bevel being applied to the wall of the case, the bevel being applied to the wall of the weapon barrel due to its deformation after the combustion of the case, so as to ensure the tightness of the ammunition at a low level of pressure.
Patent FR-2538591-A1 (FR)
Inventor: KURODA KAZUO
IPC: G11B20/24
Filed: 1983-12-26
Abstract: A system for reproducing an item of recorded information, in which an item of audio information is contained, is disclosed. An item of audio information in the reproduced information is converted into an audio signal which is passed to a low-pass filter in which its higher band component, which contains the high band of the audio frequency range, is attenuated. The signal drop-out, if any, of the attenuated output of the low-pass filter is compensated. The high band of this compensated output is boosted and equalised, in order to compensate the high band component of the audio frequency range which was attenuated by the low-pass filter.
Patent FR-2540193-A1 (FR)
Title: Appareil hydraulique de division et de sommation d'ecoulements pour deux ou plusieurs appareils de consommation
Inventor: KALMANCZHELYI GABOR
IPC: F15B11/22
Filed: 1984-01-27
Abstract: L'invention concerne un appareil de division et de sommation d'écoulements comportant des tiroirs de régulation pourvus d'une arête de régulation et utilisables avec deux ou plusieurs appareils de consommation. Le couplage en retour entre les différents tiroirs de régulation 1, 2, 3, 4, est agencé de manière que le volume de liquide commun soit ouvert et un volume d'actionnement 17, 18, 19, 20 de chaque tiroir de régulation 1, 2, 3, 4 est relié à un autre volume d'actionnement 14, 15, 16, 13, raccordé à l'étranglement de mesure 10, 11, 12, 9 du tiroir associé, d'un autre tiroir de régulation 2, 3, 4, 1. (CF DESSIN DANS BOPI)
Patent FR-2560060-A1 (FR)
Title: Improvements to construction game elements
IPC: A63H33/12
Filed: 1984-02-23
Abstract: The present invention relates to hollow square profiles obtained by extrusion which can be fitted together in order to permit assembly operations. On each of their large faces, the profiles are perforated with holes on a median line, the holes being spaced by a constant pitch and offset on two contiguous faces.
Patent FR-2570107-A1 (FR)
Title: Construction system for buildings have a timber frame with load-bearing corners
IPC: E04B1/26
Filed: 1984-02-27
Abstract: The invention relates to constructive systems for buildings having a timber frame. The system consists of cross-braced load-bearing corners 1, of a tying assembly made of a timber beam 2, of lightweight and non-loadbearing facade panels 3, of a trussed ridge beam element which is self-supporting, cross-bracing the whole frame, and containing the main technical units. The load-bearing corners consist of three columns cross-braced by planks nailed on their external face. The insulating material is placed between the vertical frame elements on the external side and crossed by a second horizontal layer placed within the thickness of the cross-bracing. The vapour barrier is aluminised and placed in such a way that it divides the space containing no insulating material into two non-ventilated air cavities. The construction system of the invention may be used in all single-storey or two-storey buildings.
Patent FR-2561296-A1 (FR)
Title: Universal inspection hatch
Inventor: BLANDIN JEAN-CLAUDE
IPC: E04F19/08
Filed: 1984-03-14
Abstract: Universal inspection hatch for any point of the dwelling involving occasional maintenance access and more particularly fitted to solid and thin cladding panels having a thickness in the order of 15 to 26 mm. It is constituted by a door and a mobile support allowing the rotation, locking or removal of the said door. It is characterised in that the mobile support of the opening panel 1 makes use of two sets of identical sliders 2-2' fixed face to face and head to tail on the horizontal (or vertical depending on the case) edges of the opening panel 1 and of the frame 3. Each set of sliders is joined together by a pivot spindle disposed at choice in one of the two circular recesses produced on the lateral face of the sliders forming the housing of the said pivot spindle.
Patent FR-2544062-A1 (FR)
Title: Dispositif de transport d'un canon ou analogue
Inventor: COLLANUS HEIKKI
IPC: B60P1/64
Filed: 1984-04-06
Abstract: L'INVENTION CONCERNE UN DISPOSITIF POUR TRANSPORTER UN CANON OU ANALOGUE AU MOYEN D'UN VEHICULE DU TYPE CAMION. LE CANON 2 COMPREND UN TUBE 3 ET UN AFFUT 4 SUPPORTANT LE TUBE; L'AFFUT DU CANON EST D'UNE STRUCTURE A PLATEFORME INTERCHANGEABLE DE MANIERE QUE LE CANON PUISSE ETRE TRANSPORTE AU MOYEN D'UN CAMION EQUIPE D'UN MECANISME DE CHANGEMENT DE PLATEFORMES ET PUISSE ETRE DESCENDU AU SOL POUR UN TIR AU MOYEN DU MECANISME DE CHANGEMENT DE PLATEFORMES; L'AFFUT COMPORTE UN SYSTEME A RAILS D'APPUI 6 COMPATIBLE AVEC LE MECANISME DE CHANGEMENT DE PLATEFORMES DU CAMION, LES RAILS 7 DE CE SYSTEME ETANT PLACES SOIT SUR LA PARTIE INFERIEURE DE L'AFFUT 4, SOIT SUR LES BRAS PORTEURS DE L'AFFUT.
Patent FR-2562469-A1 (FR)
Title: Device for attaching flexible sheets to a backing
IPC: B44C7/02
Filed: 1984-04-09
Abstract: The invention relates to accessories for the lining of walls. The subject of the invention is a fixing device for the assembling of flexible sheets 9 to a backing 8, constituted by a profiled web 1 having two large parallel faces each covered with a layer of self-bonding adhesive 2, 3. One of the edges of the profiled web 1 is provided with a rabbet 7 so that one of the longitudinal edges of one large face projects with respect to the corresponding longitudinal edge of the opposite large face. This device applies more particularly to the covering of walls using flexible sheets.
Patent FR-2562830-A1 (FR)
Title: Grinding machine for manual grinding of spectacle lenses and grinding wheel used on such a machine
Inventor: BARDONNET PIERRE
IPC: B24B9/14
Filed: 1984-04-11
Abstract: Grinding machine for manual grinding of spectacle lenses comprising a grinding wheel 6 of frustoconical shape. The grinding wheel 6 comprises two contiguous frustoconical rims 11 and 12 of different respective angles, and at the intersection of the two rims 11 and 12 there is provided a V-shaped groove 13 whose width, measured between the ends of the two branches of the V has a value lower than 3 mm.
Patent FR-2563376-A1 (FR)
Title: Sensor of sorted ions for mass spectrometer of the "three-dimensional trap" type
Inventor: SHERETOV ERNST PANTELEIMONOVIC
IPC: H01J49/42
Filed: 1984-04-20
Abstract: The invention relates to mass spectrometers. The sensor of sorted ions forming the subject of the invention is of the type comprising an annular hyperboloid electrode 1 and two end-face hyperboloid electrodes 2, 3 in which are produced an entrance channel 4 for electrons and an exit channel 5 for sorted ions, and is characterised in that the entrance channel 4 for electrons and the exit channel 5 for sorted ions in the annular hyperboloid electrode 1 and in the end-face hyperboloid electrodes 2, 3 are common with one or two additional channels serving to suppress the distorsions, due to the entrance channel 4 for electrons and to the exit channel 5 for sorted ions, in the distribution of the potential in the working volume of the sensor of sorted ions. The invention may be of use in geology for the analysis of gases, in medicine for the chemical analysis of solid and gaseous bodies, and in space research.
Patent FR-2563093-A1 (FR)
Title: Convertible travelling bag
IPC: A45F3/02
Filed: 1984-04-24
Abstract: Convertible travelling bag consisting of a casing 1 made from natural or synthetic material, having the shape of a kilometre marker (milestone) with a rounded top 6 which can be produced directly or with a lining of fluorescent material, and of a transparent pocket 4 on the front for sliding in a destination sign, characterised by its inner framework 2 of lightweight tubes, which is removable via the set of three compasses 42 articulated on each of the sides and three flat bars 50 pivoting on the top which serve as a stiffening and as a make-shift seat. The invention is also characterised by its single strap 8 and its appropriate buckles which enable the assembly to be carried as a rucksack and, alternatively, without upsetting the length adjustment of the strap, the latter may be converted into a shoulder strap or a strap for carrying in the hand. The multiple arrangements according to the invention make this a bag which is versatile in use and is particularly of interest for the hitch-hiker.
Patent FR-2545772-A1 (FR)
Title: Procede de commande et installation de freinage a glissement controle pour vehicule automobile
Inventor: KIRCHER DIETER
IPC: B60T8/58
Filed: 1984-05-03
Abstract: L'INVENTION CONCERNE UN PROCEDE DE COMMANDE ET UNE INSTALLATION DE FREINAGE A GLISSEMENT CONTROLE POUR VEHICULE AUTOMOBILE. LA FORCE APPLIQUEE SUR PEDALE DE FREIN 7 ASSISTE PAR UN GROUPE D'ASSISTANCE 1 EST TRANSMISE A UN MAITRE-CYLINDRE 10 ET DISTRIBUEE AUX FREINS DE ROUES PAR L'INTERMEDIAIRE D'ELECTROVANNES 15, 16, 17. POUR LE CONTROLE DU GLISSEMENT, UNE FORCE EST OPPOSEE A LA PRECEDENTE, OBTENUE PAR INVERSION DE L'ACTION DU GROUPE D'ASSISTANCE 1 A L'AIDE D'UNE VANNE PERMUTATRICE 19, TANDIS QUE LES FREINS DE ROUES A MAINTENIR EN ACTION SONT ISOLES DU MAITRE-CYLINDRE 10 PAR LES ELECTROVANNES CORRESPONDANTES 15, 16, 17.
Patent FR-2564045-A1 (FR)
Title: Improved pivoting headrest
Inventor: NEMOTO AKIRA
IPC: B60N2/48
Filed: 1984-05-14
Abstract: The present invention relates to a headrest for a vehicle seat, which can be moved by pivoting in the longitudinal direction relative to a support mounting 5 carried by the backrest of the seat, so as to adjust its angular position relative to the latter. According to the invention, a notched plate 17 carrying a certain number of teeth 191 to 19n and a projection 20 situated in front of this series of teeth, is fixed to the panel 13 constituting the body of the headrest or to the support mounting 5 which carries this panel while a claw 18, having a first end 18a capable of coming into engagement with the teeth and a second end 18b capable of coming to bear against the projection 20 of the toothed plate 17, is mounted on the other of these members, namely the support mounting 5 or the panel 13, which does not carry the notched plate; a helical torsion spring with reversible action 24 is interposed between the claw 18 and the panel 13.
Patent FR-2564439-A1 (FR)
Title: Tank for the successive transport of two different liquids such as water and crude oil
IPC: B65D88/62
Filed: 1984-05-16
Abstract: The tank 1 is divided into two variable volumes A and B by a flexible partition 3, fixed inside the tank along a median line. The partition 3 may be applied totally against one or other half of the tank, allowing the volumes A and B to be varied in a complementary manner from zero to the volume of the tank. It is thus possible to transport a product, for example crude oil, in volume A and, during a return voyage, to transport water in the volume B after having displaced the partition simply by filling the volume B and expelling the product from the volume A. The products are not polluted by each other and the tank can be used for both the outward and return journeys.
Patent FR-2546322-A1 (FR)
Title: Cinematograph film producing method for image presentation system
Inventor: NORDBERG ANTHONY
IPC: G03B15/00
Filed: 1984-05-16
Abstract: A model of the object is displayed, and images of the model are photographed onto a film such that different frames of the film display images of the object at different orientations. The images carried on frames of the film are photographed onto successive frames of a second film to produce a sequence of images having orientations corresponding to those of the object as would be viewed by an observer during movement of the object in the predetermined path relative to the observer. The object would be viewed while adjusting the sizes of the images on the frames of the second film to simulate variations in the range of the object from the observer. The film may be produced under the control of a computer.
Patent FR-2547237-A1 (FR)
Title: Extrudeuse pour matieres plastiques
Inventor: SCHWARZ WILFRIED
IPC: B29C48/50
Filed: 1984-06-06
Abstract: LE CARTER 1 PRESENTE UNE OUVERTURE DE CHARGEMENT 6 ET LA PROFONDEUR DU FILET T EST AUGMENTEE DANS CETTE ZONE D'OUVERTURE DE CHARGEMENT 6 A LAQUELLE FAIT SUITE UNE ZONE D'ALIMENTATION 7. LA CRETE DE LA VIS 4 PRESENTE, DE PREFERENCE, LE MEME ANGLE D'HELICE A DANS LA ZONE D'ALIMENTATION 7 ET DANS LA ZONE D'OUVERTURE DE CHARGEMENT 6. TOUTEFOIS, DANS LA REGION DE LA ZONE D'ALIMENTATION, ELLE PRESENTE UNE PROFONDEUR DU FILET T REDUITE, A SAVOIR INFERIEURE D'UN FACTEUR DE 0,5 A 0,9 A CELLE DE LA ZONE D'OUVERTURE DE CHARGEMENT. DANS LA ZONE DE TRANSITION ENTRE LA ZONE D'OUVERTURE DE CHARGEMENT 6 ET LA ZONE D'ALIMENTATION 7, LE NOYAU DE VIS SANS FIN 3 COMPORTE UN RACCORD CONIQUE 8 EVASE DANS LE SENS D'ECOULEMENT. DANS LA ZONE D'ALIMENTATION 7 LE CARTER 1 EST MUNI DE RAINURES LONGITUDINALES 9 DONT LA PROFONDEUR DIMINUE DANS LE SENS D'ECOULEMENT.
Patent FR-2547381-A1 (FR)
Title: Spacer for motor vehicle seat frames
Inventor: KRAUSS REINHOLD
IPC: A47C7/20
Filed: 1984-06-08
Abstract: A one-piece spacer (3), made of plastic material, specially for the frame of a motor vehicle seat with the parallel wires (6) and a wire (7) of the seat edge reinforcement, consists of a foot part (1) and a head part (2) which are joined by a web (3a). The wires (6) fit into U-shaped clamping recesses (4,5) in the foot part. A pocket (9) in the head part (2) accepts a loop (8) in the wire (7) with a clamping fit.
Patent FR-2543813-A1 (FR)
Title: Electrical coffee machine comprising a centrifugal filter
Inventor: LEUSCHNER UDO
IPC: A47J31/22
Filed: 1984-06-22
Abstract: Electrical coffee machine comprising a centrifugal filter which, in the operating position, is coupled in a removable fashion to the shaft of a motor and receives the boiling water by means of a feeding device mounted on the shaft which drives it in rotation, the flow rate of the feeding device 24 is matched with the filter proper (annular slot 56) at the outer periphery of the centrifugal filter 22 and with the geometry of the filter so that, when fine or medium fine coffee powder is used, water is retained inside in front of the coffee layer 52.