baber/WOPTO huggingface dataset:
Patent FR-2557302-A1 (FR)
Title: Appareil pour mesurer et afficher la vitesse d'une embarcation, notamment d'une planche a voile
IPC: G01P5/07
Filed: 1983-12-22
Abstract: L'APPAREIL COMPREND, D'UNE PART UNE HELICE 1 IMMERGEE EQUIPEE D'UN AIMANT PERMANENT ET ACCROCHEE A L'EMBARCATION 40 ET D'AUTRE PART UN DISPOSITIF DE MESURE MONTE SUR L'EMBARCATION. LE DISPOSITIF DE MESURE COMPREND UNE BOBINE COMPORTANT UN TRES GRAND NOMBRE DE SPIRES, AU MOINS UN AMPLIFICATEUR OPERATIONNEL ET UN FREQUENCEMETRE POUR DETERMINER LA FREQUENCE DE ROTATION DU CHAMP MAGNETIQUE PRODUIT PAR L'AIMANT DE L'HELICE 1. UN BOITIER ETANCHE 30 RENFERME LA TOTALITE DU DISPOSITIF DE MESURE, SON ORGANE D'AFFICHAGE A CRISTAUX LIQUIDES ET DES CELLULES PHOTOVOLTAIQUES POUR SON ALIMENTATION. L'APPAREIL EST PARTICULIEREMENT DESTINE A ETRE MONTE DE MANIERE AMOVIBLE SUR UNE PLANCHE A VOILE OU UN DERIVEUR LEGER.
Patent WO-8404513-A1 (WO)
Title: Package of the bicameral aerosol type
Inventor: LILIENTHAL JOHANNES HEINRICH
IPC: B65D83/14
Filed: 1984-05-14
Abstract: In an external container (1) of the conventional aerosol type containing one of the components of the product to be obtained, a smaller internal container (13) is arranged which contains the propulsion gas and the second component of the product to be obtained. The internal container (13) is arranged upside down and its valve (12) may be actuated from the outside by a pressure exerted on a deformable plug (8) arranged at the bottom of the external container, the container (13) being held by a strut (14) which is preferably integral with the valve (2) of the external container (1).
Patent FR-2559122-A1 (FR)
Title: Rigging for sailboards or sailing boats consisting of the combination of a wishbone and a four-sided sail
Inventor: LEFEBVRE ANDRE
IPC: B63B35/79
Filed: 1984-02-03
Abstract: Rigging consisting of the combination of a wishbone and a four-sided sail. The wishbone 1 is composed of a front portion composed of two bent tube elements 1a each extending from the head fixture 1b to an underframe 1c or three-way tube in the shape of a Y situated substantially halfway along the wishbone; the two oblique branches of the said underframe have the ends of curved tubes 1d and 1e fitted into them, connected respectively by fixtures 1f and 1g, making two semi-ellipses of radii corresponding to those of the front portion. The sail 2 comprises a fourth side 2a substantially parallel with the mast 3 connecting the clew point 4 of the trailing edge 2b of the sail to the clew point 5 of the edge 2c of the sail, which clew points are respectively connected to the fixtures 1f and 1g of the wishbone by separately controlled hoisting pulley blocks.
Patent FR-2559740-A1 (FR)
Title: Tamper-proof display package forming a case which can be reused for various objects
IPC: B65D43/16
Filed: 1984-02-17
Abstract: Tamper-proof display package forming a case which can be reused for various objects, characterised in that it comprises a first film which is at least partially transparent delimiting, at least, a housing disposed laterally with respect to a part forming a back 2, the said housing being provided with objects 11, 12 and at least a second film 16 being fixed by its peripheral edge 16a to the peripheral edge 5a of the first film 5.
Patent FR-2560249-A1 (FR)
Title: Procede de montage rapide d'elements constitutifs d'une construction et dispositif mis en oeuvre dans ce procede
Inventor: RECASENS JOSEPH
IPC: F27D1/16
Filed: 1984-02-27
Abstract: L'INVENTION SE RAPPORTE A LA CONSTRUCTION. ELLE CONCERNE UN PROCEDE DE MONTAGE RAPIDE D'AU MOINS DEUX ELEMENTS CONSTITUTIFS D'UNE CONSTRUCTION, CARACTERISE EN CE QU'IL CONSISTE: A.A DISPOSER A PLAT ET AU SOL CES ELEMENTS CONSTITUTIFS 1 DANS LA CONFIGURATION RELATIVE DESIREE; B.A SOLIDARISER ENSEMBLE CES ELEMENTS CONSTITUTIFS A L'AIDE DE MOYENS 3 D'ASSEMBLAGE TEMPORAIRE APPROPRIES; C.A SOULEVER L'ENSEMBLE FORME PAR LES ELEMENTS CONSTITUTIFS ASSEMBLES A L'AIDE DE MOYENS DE LEVAGE APPROPRIES ET A METTRE CET ENSEMBLE A SA POSITION DEFINITIVE DANS LA CONSTRUCTION; D.A ENLEVER LES MOYENS D'ASSEMBLAGE TEMPORAIRE. APPLICATION NOTAMMENT A LA CONSTRUCTION DE VOUTES DE FOURS VERRIERS.
Patent FR-2560255-A1 (FR)
Title: Flame-protective and fire-resisting removable partition.
Inventor: BACQUET FRANCK
IPC: E04B2/74
Filed: 1984-02-27
Abstract: The invention relates to the field of removable partitions. The flame-protective and fire-resisting partition according to the invention, comprising a metal frame with two parallel facing boards 1, 2 made up of panels with butt plates 19, 20 defining an internal cavity lined with an incombustible material, is essentially characterised in that the frame comprises a bottom rail 4 and a top rail 6 having a U-shaped cross-section, the respective openings of which are directed towards each other, uprights 10 having U-shaped cross-sections being fitted between the said rails without any rigid fixing member, the flanges of all the sections having rectangular slots 9 into which a tab from clips 13 having rectangular flanges for holding each of the said panels is inserted, towards the internal cavity 3, while a recessed part of the said clips, directed away from the internal cavity is intended to receive springs 18 for fixing the external butt plates. Application in particular to the arrangement of offices.
Patent FR-2562351-A1 (FR)
Title: Comparateur de phase a fonctionnement linearise et boucle a verrouillage de phase comprenant un tel comparateur de phase
Inventor: MARCEL
IPC: H03L7/085
Filed: 1984-03-30
Abstract: COMPARATEUR DE PHASE RECEVANT UN SIGNAL D'ENTREE ET UN SIGNAL A COMPARER A CE SIGNAL D'ENTREE ET COMPRENANT UN ETAGE AUXILIAIRE200 DIT DE REDUCTION DE DYNAMIQUE, COMPOSE D'UNE PART DE MOYENS210, 240 DE REDUCTION D'UNE VALEUR DETERMINEE DE LA DIFFERENCE DE PHASE ENTRE LES DEUX ENTREES DU COMPARATEUR ET, D'AUTRE PART, DE MOYENS220 DE RESTITUTION DE LADITE VALEUR EN SORTIE DU COMPARATEUR PAR L'INTERMEDIAIRE DE MOYENS230 DE RETARDEMENT DE L'INFORMATION EXPRIMANT CETTE VALEUR. APPLICATION : BOUCLES A VERROUILLAGE DE PHASE.
Patent FR-2563693-A1 (FR)
Title: Pet toilet
IPC: A01K1/01
Filed: 1984-05-04
Abstract: The present invention relates to street furniture for use as a toilet for pets, characterised in that it consists of a low wall 1, 2, 3, 4 surrounding an area 5 which is covered with earth to a higher level than the pavement. At least one opening is provided in the said wall followed by a slope 8, 9 leading to the level of the interior earth covering, the said slope being bordered by a low wall. A bench 12 backing onto the outer surface 4 of the rear wall and vegetation D can also be provided. This equipment helps the animal to feel in its natural environment, the equipment being preferably set up around a number of trees 7, and the owner of the animal stays on the pavement.
Patent FR-2556000-A1 (FR)
Title: Process for converting a heavy hydrocarbon into a product of higher value or a lighter one
Inventor: OHTAKE NOBUMITSU
IPC: C10G47/02
Filed: 1984-05-18
Abstract: Process for converting a heavy hydrocarbon into a product of higher value. According to the invention at least two kinds of substances are added to a heavy hydrocarbon, comprising a transition metal compound which is soluble in oil or in water and an ultrafine powder which can be suspended in a hydrocarbon and whose mean particle size is between 5 and 1000 <0>m; the heavy hydrocarbon is cracked thermally in the presence of gaseous hydrogen or of gaseous hydrogen containing hydrogen sulphide; and the resulting light hydrocarbon oil is recovered; use is made of thermal cracking equipment 3, a gas-liquid separator 5, an atmospheric washer 8, a vacuum washer 10, hydrotreatment equipment 20, a high-pressure gas-liquid separator 23, a gas-liquid separator 26 and steam-pyrolysis equipment 29. The invention applies especially to the production of gaseous olefins and of monocyclic aromatic products.
Patent FR-2568340-A1 (FR)
Title: Planet gear system for vehicle engine starter
Inventor: MAZZORANA ALFRED BRUNO
IPC: F16H57/08
Filed: 1984-07-27
Abstract: A planet gear of component design has a toothed driving pinion (4) acting as a sun wheel for three planet wheels (5) supported by a plate (7) attached to the driven spindle (2). The planet wheels, which also mesh with the internal teeth of a fixed outer ring (6), are double wheels, with end portions (8) connected by a small dia. spacer. In one design, a supporting system for the double wheels uses segments (11) of a ring, supportedp by the plate on the driven spindle, each secured by a spindle and shaped to match the spacer parts, so that they fit into the grooves (9) in the double wheels. In a second design, segments are used which connect the double wheels in pairs.
Patent FR-2568783-A1 (FR)
Title: Ball thrower
IPC: A63B59/02
Filed: 1984-08-07
Abstract: The invention relates to a device allowing balls to be played with, comprising a means for receiving them and a means for throwing them. It consists of a box in the shape of an elongate clog 1 with a flat bottom 2 which is open at the top, one of whose ends is closed in the shape of a bucket 3 in order to receive the ball throwing, and the other end in the shape of a spatula 4 for throwing the ball.
Patent FR-2550779-A1 (FR)
Title: Compositions de matieres a bulles magnetiques
Inventor: GUALTIERI DEVLIN MICHAEL
IPC: H01F10/24
Filed: 1984-08-08
Abstract: L'INVENTION CONCERNE UNE COMPOSITION DE GRENAT DE FER CONTENANT DU THULIUM (TM) QUI A UN POINT DE CURIE ET UNE ANISOTROPIE MAGNETIQUE ELEVES. CETTE COMPOSITION A LA FORMULE (LA, BI) (SM, EU) TM (CA, SR) R3-A-B-C-D FE5-D (SI, GE) O DANS LAQUELLE R EST AU MOINS UN ELEMENT DU GROUPE COMPOSE DE L'YTTRIUM ET DES ELEMENTS DONT LE NOMBRE ATOMIQUE EST COMPRIS ENTRE 57 ET 71, A EST COMPRIS ENTRE ENVIRON 0,05 ET ENVIRON 0,20, B EST COMPRIS ENTRE ENVIRON 0,50 ET ENVIRON 0,90, C EST COMPRIS ENTRE ENVIRON 0,40 ET ENVIRON 1,20 ET D EST COMPRIS ENTRE ENVIRON 0,40 ET ENVIRON 0,65 (EX. 1 ET 3). ON FAIT CROITRE UNE COUCHE DE CETTE COMPOSITION SUR UN SUBSTRAT APPROPRIE PAR EPITAXIE EN PHASE LIQUIDE POUR FORMER UN ELEMENT D'UN DISPOSITIF A BULLES MAGNETIQUES, TEL QU'UNE MEMOIRE A HAUTE DENSITE, DONT LES BULLES ONT UN DIAMETRE DE 1,2MM.
Patent FR-2771496-A1 (FR)
Title: Sub calibre kinetic projectile for gun
Inventor: BECKER WILFRIED
IPC: F42B12/02
Filed: 1984-10-26
Abstract: The projectile (10) has a point (16) connected to the body of the projectile by fitting into a blind hole (22) in the main projectile body (12). It has a frangible cover (18) to transmit higher forces to the armour at seat areas of the projectile (72,74,76).
Patent FR-2573879-A1 (FR)
Title: Optical device for simultaneously photographing two objects aligned along the axis of the objective, one object being in the plane of the objective
IPC: G03B17/24
Filed: 1984-11-27
Abstract: The device according to the present invention makes it possible to obtain a single negative of two objects aligned along the axis of the objective and situated at different distances. To achieve this, the between device includes a reflecting component for reducing the real distance of one of the photographed subjects while preserving the optical distance.
Patent FR-2574904-A1 (FR)
Title: Outlet device, for eliminating blow back, and draught accelerator for a chimney
IPC: F23L17/02
Filed: 1984-12-18
Abstract: The invention relates to a device which allows the release of smoke without blow back and accelerates the draught thereof. It is composed of three parts, the first 1, a pipe fitted to the outlet of the chimney; the second 2 has a greater diameter; at the base of this second part there is situated a collar 8 as well as on the first part 9, held in place by strips 4 and 21 so as to form an ascending air manifold. The second part 2 has, at the top, a collar at an angle of 130 DEG 7 which, combined with the inverted cone 6 of the cap (which is the third part) to which it is securely fastened, prevents any blow back. The device according to the invention is particularly intended for chimneys situated on roofs.
Patent FR-2578187-A1 (FR)
Title: Use of tree bark, in the composition of novel construction materials, manufacturing methods and products obtained
IPC: C04B18/24
Filed: 1984-12-20
Abstract: Novel construction materials containing bark. The invention relates to the composition of lightweight novel materials, containing a significant percentage of resinous or foliaceous bark, bound by an inorganic-based, air-cured or hydraulic binder, which exclusively provides cohesion thereof. This invention creates a novel outlet for the forestry industry, confronted with the problem of bark, a valueless and bulky waste product. At the same time it provides manufacturers of construction materials with quality products at a very competitive price, for acoustic, thermal and hygrometric insulation. The manufacture of these novel materials may be a manual cottage industry, or mechanical and industrial.
Patent FR-2575204-A1 (FR)
Inventor: BRULLMANN CUNO
IPC: E04B1/19
Filed: 1984-12-21
Abstract: A set of construction elements for erecting three-dimensional structures comprises hollow structural members used either as posts or as longitudinal beams and also comprises hollow assembly blocks provided with a series of openings in different orientations. The projecting head of an attachment end-fitting mounted within the end portion of a structural member can be latched within each opening of the assembly block. The attachment end-fitting of each structural member is mounted for displacement in axial sliding motion within the interior of the structural member. A movable locking wedge is placed transversely within an attachment end-fitting and inserted through corresponding openings of the respective structural member. Rigid attachment of the structural member to the assembly block is achieved by clamping the edges of the assembly block opening between the flanges of the projecting latch-head of the attachment end-fitting and the end of the structural member.
Patent FR-2575252-A1 (FR)
Title: Antivibration mounting device for a rotating electrical machine, especially for a motor vehicle alternator
Inventor: BORNET-TAILHANDIER MICHEL
IPC: H02K5/24
Filed: 1984-12-21
Abstract: The rotating electrical machine comprises a first lug 7 for its fastening to a support 10, and an additional holding lug 11, respectively connected to the two flanges of the machine. The holding lug 11 comprises a housing 13 in which a bush 15 is mounted with a diametric clearance 16. A fastening bolt 9 passes through the bush 15 and clamps the latter to the support 10, whilst allowing a limited deflection of the holding lug 11. Application to the mounting of an alternator on a motor vehicle engine.
Patent FR-2575929-A1 (FR)
Title: Device for fastening a boot to a ski
IPC: A63C9/00
Filed: 1985-01-16
Abstract: The device for fastening a boot 1 to a ski 2 comprises a stationary plate 3 fastened to the ski and a movable plate 4 comprising means for fixing the boot to this plate. The stationary plate 3 and the movable plate 4 comprise means which interact together in order to lock these two plates to each other. These means are associated with safety members which permit unlocking of these two plates when they are subjected to relative translational forces in terms of flexing and twisting which exceed a predetermined threshold. This fastening device makes it possible to use a normal walking shoe or a conventional ski boot having a flexible sole.
Patent FR-2577170-A1 (FR)
Title: Modular elements for protecting and decorating metal surfaces
IPC: B32B15/06
Filed: 1985-02-08
Abstract: The subject of this invention is the use of a steel sheet, of modular size, to one face of which a material used for protection or decoration is fixed, preferably by adhesive bonding, a magnetic rubber being adhesively bonded to the other face of this metal sheet. The idea stems from the fact that since the magnetic rubber doubles its effectiveness when it is in contact with a ferrous metal, the effectiveness of the fixing is enhanced accordingly if this rubber is adhesively bonded to a steel sheet. This enables a magnetic rubber to be used which is half as thick (for example, 1 mm instead of 2 mm), thus making it possible to market it in fields such as the anti-vibration field in which replacement is frequent. In the case in which the surface to be protected or decorated includes asperities, a thickness of cellular, rubber or plastic material may be placed between the metal sheet and the magnetic rubber, which enables the "air gap" to be reduced and better fixing to be obtained thereby.
Patent FR-2559870-A1 (FR)
Title: Valve en champignon montee en ligne
Inventor: WEST DONALD JEROME
IPC: F16K11/044
Filed: 1985-02-20
Abstract: ON DECRIT UN ENSEMBLE DE VALVES MULTIPOSITIONS, MULTIDIRECTIONS 10 QUI INCORPORE UNE PLURALITE D'ELEMENTS DE VALVE DU TYPE EN CHAMPIGNON 86, 88 MONTES SUR UN ARBRE UNIQUE 72 POUR UN FONCTIONNEMENT SIMULTANE. SEUL L'UN DES ELEMENTS DE VALVE PEUT ETRE AMENE EN CONTACT AVEC UN SIEGE FIXE, LES AUTRES ELEMENTS POUVANT VENIR EN CONTACT AVEC DES SIEGES MOBILES, D'OU IL RESULTE QU'ON PEUT TENIR COMPTE DES VARIATIONS DIMENSIONNELLES DUES AUX TOLERANCES DE FABRICATION. DE PLUS, LES DIVERS ELEMENTS DE VALVE SONT DIMENSIONNES LES UNS PAR RAPPORT AUX AUTRES DE MANIERE A CREER UNE FORCE NETTE DUE AUX FLUIDES PRESSURISES, FORCE QUI A POUR EFFET DE MAINTENIR LES ELEMENTS DE VALVE DANS UN ETAT STABLE DANS L'UNE OU L'AUTRE D'AU MOINS DEUX POSITIONS AINSI QUE DE MAINTENIR LES ELEMENTS MOBILES DE VALVE EN CONTACT ETANCHE SUR AVEC LES SIEGES DE VALVE MOBILES RESPECTIFS AINSI QUE DE RAMENER LES SIEGES MOBILES A UNE POSITION PREDETERMINEE LORS DU DESENGAGEMENT DE L'ELEMENT DE VALVE ASSOCIE.
Patent FR-2578467-A1 (FR)
Title: Dispositif de surfacage et de polissage du chant vertical d'une pierre ou d'un element prefabrique massif
Inventor: THIBAUT BERNARD
IPC: B24B41/047
Filed: 1985-03-06
Abstract: DISPOSITIF DE SURFACAGE ET DE POLISSAGE DU CHANT VERTICAL D'UNE PIERRE OU D'UN ELEMENT PREFABRIQUE MASSIF POSE A PLAT, COMPORTANT UNE BROCHE ROTATIVE D'ENTRAINEMENT A AXE VERTICAL 2. CE DISPOSITIF SE CARACTERISE EN CE QU'IL COMPREND UN BOITIER PRINCIPAL 5 MONTE A ROTATION AUTOUR DUDIT AXE VERTICAL ET RECEVANT UN AXE D'ENTRAINEMENT HORIZONTAL 13 POUR UNE MEULE BOISSEAU 17 FIXEE EN BOUT DE CET AXE HORIZONTAL A L'EXTREMITE DU BOITIER ET ATTAQUANT A PLAT LE CHANT DE LA PIERRE MAINTENU VERTICAL. APPLICATION A LA FABRICATION DE PIERRES, STELES OU ELEMENTS PREFABRIQUES POUR LA CONSTRUCTION DE BATIMENTS.
Patent FR-2581517-A1 (FR)
Title: Footwear in the form of a boot, designed particularly to act as an "après-ski" boot or as a sailing boot
IPC: A43B9/08
Filed: 1985-05-07
Abstract: Boot with a high upper and method for manufacturing it, providing an outer sole in leaktight material forming a dish which is open upwards, in which is arranged an attached element serving as an insole, whilst the upper is fixed on the periphery of this outer sole by means of a lower skirt. The outer sole 1 of this boot is moulded in plastic with a bent lip 4 forming a groove 5 which is open downwards, inside which is fastened, by welding or gluing, the corresponding edge 7, 7a, 7b, 7c of the leaktight lower skirt 6, 6a, 6b, 6c, which is folded upwards and surrounds the lip 4 of the outer sole. As for the upper 1 of this boot, it is fastened on the upper edge of this skirt. The boot thus produced can serve particularly as an "après-ski" boot or as a sailing boot.
Patent FR-2581665-A1 (FR)
Title: Yarns of thermally stable textile materials
Inventor: DAMBOURNET ALAIN
IPC: D03D15/12
Filed: 1985-05-07
Abstract: Yarn with a core made of thermostable textile materials, wear indicator, the core of which is made of organic textile of the type based on poly-para-phenylene terephthalamide and the sheath of thermally stable and nonflammable textile, the core amounting to 20 to 30 % by weight of the yarn and having a strength per kilometre of at least 20 g/tex, the metric number of the said yarn being between 10 and 30, the core and the sheath being optionally of different colour. The mechanical strength of the core is higher than that of the sheath. The thermally stable and nonflammable textile is of polyamide-imide type. Textile articles such as protective clothing made from the yarn of the invention.
Patent FR-2564480-A1 (FR)
Title: Lubrifiant pour la production de tubes sans soudures
Inventor: AKITA S
IPC: C10N20/06
Filed: 1985-05-15
Abstract: LUBRIFIANT POUR LA PRODUCTION DE TUBES SANS SOUDURES COMPRENANT DES PARTICULES FINES D'UNE RESINE SYNTHETIQUE INSOLUBLE DANS L'EAU, DE GILSONITE ET DE GRAPHITE. CE LUBRIFIANT CONTIENT 20 A 30 PARTIES EN POIDS DE PARTICULES FINES D'UNE RESINE SYNTHETIQUE INSOLUBLE DANS L'EAU, DE 15 A 30 PARTIES EN POIDS DE PARTICULES FINES DE GILSONITE ET DE 40 A 65 PARTIES EN POIDS DE POUDRE FINE DE GRAPHITE.
Patent FR-2582576-A1 (FR)
Title: Installation for producing packaging, especially for pharmaceutical ampoules
Inventor: AUTAJON GERARD
IPC: B31B11/00
Filed: 1985-05-30
Abstract: It comprises, in combination: - a fixed magazine 24 in which the pre-cutout elementary blanks F are stacked; - means 23 enabling the blanks to be transferred, one by one, onto a forming station; - an actual forming station including means 24, 25, 26, 27, 28 making it possible to carry out continuously, without stopping or dead time: . the various folding operations of the lateral portions of the blanks in directions corresponding to those of a finished package (means 24, 26), . the deposition of adhesive on the flat bottom between the lateral supports (means 25), . the bonding of the zones thus adhesively-coated with the tabs provided on the sides of the lateral supports (means 27); - means 28 enabling the empty box thus formed to be transferred to a filling station.
Patent FR-2565454-A1 (FR)
Title: Faucheuse rotative
Inventor: ARNOLD RUDOLF
IPC: A01D34/74
Filed: 1985-06-07
Abstract: DANS UNE FAUCHEUSE ROTATIVE COMPRENANT UN OU PLUSIEURS TAMBOURS DE COUPE 3 ET UN OU PLUSIEURS PLATEAUX DE GLISSEMENT 17 MONTES COAXIALEMENT A CES DERNIERS SONT PREVUES AU MOINS UNE DOUILLE 15 PRESENTANT UN TARAUDAGE 16 ET UNE DOUILLE COAXIALE 10 PRESENTANT UN FILETAGE EXTERIEUR 11, QUI PAR ROTATION L'UNE PAR RAPPORT A L'AUTRE, SONT DEPLACABLES LONGITUDINALEMENT DE MANIERE A OBTENIR UN REGLAGE DE LA HAUTEUR DE COUPE. DANS LA POSITION DE TRAVAIL, LA DOUILLE 15 PRESENTANT LE TARAUDAGE 16 PEUT, AU MOYEN D'UN DISPOSITIF D'ARRET 20, 21, 22, 14, ETRE EMPECHEE DE TOURNER PAR RAPPORT A LA DOUILLE COAXIALE 10 PRESENTANT LE FILETAGE EXTERIEUR 11.
Patent FR-2584144-A1 (FR)
Inventor: BIBOLLET BERNARD
IPC: B63H3/12
Filed: 1985-06-26
Abstract: A propeller according to the invention has a hub centered on and rotatable about a hub axis and formed with a bore extending along the axis and with a plurality of identical, radially outwardly open, and angularly equispaced sockets centered on socket axes extending at least generally radially of the hub axis. Respective identical blades each have a base complementary to and snugly fittable in the respective socket and an outer part extending radially outward from the hub along the respective socket axis when the respective base is fitted therein. Respective locks are provided in the hub for releasably fixing the bases in the respective sockets against relative movement between the respective blades and the hub. The sockets and bases are normally complementarily cylindrical and both centered when the bases are in the sockets on the respective socket axes. Thus the blades can turn about the respective socket axes on the hub when released by the respective locking means. In addition each socket is formed with an annular groove open inwardly radially of the respective socket axis and each base is formed with a similar annular but outwardly open groove confronting the respective inwardly open groove when the base is fitted in the respective socket and forming with the respective inwardly open groove an annular chamber. The system for locking includes a respective plurality of balls generally filling the chamber and something that can press the balls tightly against the respective grooves.