baber/WOPTO huggingface dataset:
Patent FR-2482940-A1 (FR)
Title: Tire-bouchon
IPC: B67B7/04
Filed: 1980-05-23
Abstract: TIRE-BOUCHON A MANCHE PLAT 1 ET QUEUE DE COCHON ARTICULEE 2 COOPERANT AVEC UN LEVIER D'EXTRACTION 3 COMPORTANT DEUX CRANS D'APPUI 5, 6, S'APPUYANT SUR LE DESSUS DU GOULOT DES BOUTEILLES POUR EFFECTUER L'EXTRACTION COMPLETE DES BOUCHONS MEME LES PLUS LONGS EN DEUX OPERATIONS.
Patent FR-2459473-A1 (FR)
Title: Procede et appareil de mesure de la mobilite electrophoretique des cellules
Inventor: JONES ROBIN
IPC: G01P3/80
Filed: 1980-06-13
Abstract: L'INVENTION CONCERNE LA MESURE DE LA MOBILITE ELECTROPHORETIQUE DE CELLULES EN SOLUTION. ELLE SE RAPPORTE A UN APPAREIL DANS LEQUEL UNE CAMERA 15 DE TELEVISION BALAIE UNE CHAMBRE D'ELECTROPHORESE SUIVANT DES LIGNES EN FORMANT DES IMAGES. CHAQUE LIGNE BALAYEE EST TRAITEE AFIN QU'ELLE INDIQUE LES CELLULES DETECTEES. DEUX IMAGES SONT CORRELEES ET PERMETTENT LA DETERMINATION DE LA VITESSE DES CELLULES DANS LA SOLUTION. DES MESURES SUCCESSIVES DE MOBILITE PEUVENT ETRE INTEGREES AFIN QUE LES RESULTATS SOIENT AMELIORES. UN CIRCUIT 32 INTRODUIT UNE ETIQUETTE A COTE DE CHAQUE CELLULE DETECTEE. APPLICATION A LA MESURE DES MOBILITES ELECTROPHORETIQUES POUR LA DETECTION DES MALADIES MALIGNES.
Patent FR-2485306-A1 (FR)
Title: Systeme de test local d'un modem utilisant la modulation par deplacement de frequence
Inventor: BOUDAULT ROBERT
IPC: H04L1/24
Filed: 1980-06-23
Abstract: CE SYSTEME DE TEST EST UTILISE POUR TESTER UN MODEM 1 DONT LE MODULATEUR 11 EST CONSTITUE PAR UN MULTIVIBRATEUR QUI FOURNIT EN FONCTIONNEMENT NORMAL DEUX FREQUENCES F, F SOUS L'ACTION DU SIGNAL DE DONNEES V ET QUI EST CONNECTE A UN FILTRE D'EMISSION 12. SOUS L'ACTION DU SIGNAL DE COMMANDE DE TEST V, LE MULTIVIBRATEUR EST MODIFIE POUR FOURNIR DEUX FREQUENCES DE TEST F NF, F NF, N ETANT SENSIBLEMENT EGAL AU RAPPORT FF, F ETANT LA VALEUR MOYENNE DES FREQUENCES RECUES PAR LE MODEM EN FONCTIONNEMENT NORMAL, F ETANT LA VALEUR MOYENNE DES FREQUENCES F, F; EN MEME TEMPS LE FILTRE D'EMISSION EST MODIFIE POUR TRANSMETTRE LES DEUX FREQUENCES F, F SOUS L'ACTION DU SIGNAL DE COMMANDE DE TEST. APPLICATION: TRANSMISSION DE DONNEES.
Patent FR-2487704-A1 (FR)
Title: Mfr. of tube from metal strip - involves seam-welding spirally wound strip with outer edge deflecting into elliptical profile
Inventor: POTTIER MICHEL
IPC: B21C37/12
Filed: 1980-07-29
Abstract: The tube-fabricating process entails the welding of obliquely fed spiral wound metal strip (2). Spiral winding brings two opposite strip edges into contact for the making of a continuously welded joint. The external edge (3) of the strip feed is deformed perpendicularly to the major strip plane to follow a nominally elliptic profile (5), and the internal edge (4) remains nominally in the major plane. The strip is then imparted with a truncated conical internal form which evolves into the cylindrical form. The internal edge may be slightly concave (7), and the weld may be sited on the tube crown (A) where the edge profile (5) intersects the cross-sectional tube profile.
Patent FR-2490314-A1 (FR)
Title: Split connecting bush for pipework - has enlargement of slot into which expander wedge can fit
Inventor: LEGRIS ANDRE
IPC: F16L33/035
Filed: 1980-09-12
Abstract: The connecting bush is used to join lengths of pipework and is cylindrical with a longitudinal slot (3). The slot renders the bush capable of being prised open inside its elastic limit. The slot has a rectangular enlargement (4) having rounded corners. A special expanding tool (6) is used which has a tip (5) with a similar but slightly smaller form as the enlargement (4). The tool expands the bush when it is twisted through 90 degrees. The bush can then be positioned on the pipework, clamping the pipe when the tool is removed.
Patent FR-2491607-A1 (FR)
Inventor: ESTEVE JEAN-LOUIS
IPC: F28D20/02
Filed: 1980-10-02
Abstract: In this method, a change in state of the water is brought about by cooling upon contact with the evaporator of a refrigerating machine, which evaporator is located in a vessel which contains water which is sent to an external heat exchanger and is then to return into the vessel, in order to be recooled by contact with the ice. Use is made of a mixture of water and another liquid, and the freezing point of the mixture is less than 0 DEG C at atmospheric pressure. The mixture forms a large number of small ice crystals which are not fused with one another. The evaporator consists of the floor of the vessel and of a double floor which is welded therebelow. The blades of a stirring device sweep over the floor of the vessel. The invention comprises in addition the use of the method and of the device for cold treatment (refrigerated processing) of an arbitrary substance in the external heat exchanger, in particular of milk after milking.
Patent FR-2492539-A1 (FR)
IPC: G01V3/10
Filed: 1980-10-20
Abstract: An oscillator circuit includes electromagnetic feedback which is interrupted by the presence of a metal body within the field of electromagnetic radiation. Thus, when the metal body is present, the circuit does not oscillate. Removal of the metal body causes the circuit to oscillate with a first characteristic, such as a first modulation period of off and on switching of the oscillator. Once the metal body has been absent for a preset time, the oscillation assumes a second characteristic, such as second modulation period of off and on switching. A receiver circuit monitors the oscillations, and a decoder determines which characteristic of the oscillation is present and provides a corresponding output indication. Among other uses, the system can be utilized as a security system to monitor the state of doors and windows.
Patent FR-2471667-A1 (FR)
Title: Lampe a decharge en forme de u
Inventor: HAMMER EDWARD EUGENE
IPC: H01J61/54
Filed: 1980-12-03
Abstract: LAMPE COMPORTANT DES BANDES D'AMORCAGE PERFECTIONNEES. ELLE COMPREND UN TUBE CONSTITUE DE DEUX JAMBAGES 13, 14 SENSIBLEMENT RECTILIGNES ET PARALLELES REUNIS PAR UN COUDE EN U 12, UNE PAIRE DE BANDES D'AMORCAGE CONDUCTRICES 23, 24 S'ETENDANT RESPECTIVEMENT LE LONG DE CES JAMBAGES SUR UNE PARTIE AU MOINS DE LA LONGUEUR DE CEUX-CI, ET UN CONDUCTEUR 25 INTERCONNECTANT ELECTRIQUEMENT CETTE PAIRE DE BANDES CONDUCTRICES D'AMORCAGE, A UNE DES EXTREMITES CORRESPONDANTES DE CELLES-CI. APPLICATION AUX LAMPES FLUORESCENTES.
Patent FR-2472077-A1 (FR)
Title: Bandage pour aubes de rotor
Inventor: FITTON DAVID LAWRENCE
IPC: F01D5/22
Filed: 1980-12-12
Abstract: L'INVENTION CONCERNE UN BANDAGE POUR AUBES DE ROTOR. CE BANDAGE COMPORTE UNE PARTIE LATERALE EXTERIEURE 36 AYANT UNE SURFACE DE CONTACT GRACE A LAQUELLE L'AUBE DE ROTOR VIENT S'ENGAGER SUR UNE SURFACE DE CONTACT D'UN BANDAGE ADJACENT D'UNE AUBE DE ROTOR ADJACENTE APRES INSTALLATION DANS UNE TURBINE A GAZ, AINSI QU'UNE PARTIE LATERALE INTERIEURE 38 S'ETENDANT ENTRE LA PARTIE LATERALE EXTERIEURE 36 ET LA SURFACE PORTANTE DE L'AUBE EN Y ETANT RELIEE D'UNE SEULE PIECE AFIN D'OFFRIR UN SUPPORT POUR CETTE PARTIE LATERALE EXTERIEURE 36. UNE MATIERE DE CHARGE 44 EST ASSUJETTIE A LA SURFACE INFERIEURE 42 DU BANDAGE. L'INVENTION EST UTILISEE POUR ASSURER UNE REPARTITION A PEU PRES UNIFORME DES CONTRAINTES S'EXERCANT DANS UN BANDAGE POUR AUBES DE ROTOR.
Patent FR-2496906-A1 (FR)
Title: Applicator for contact lenses - has pads to keep eyelid open with two circles and sleeve to apply lens and suction pad applies or removes it
IPC: A61B17/02
Filed: 1980-12-19
Abstract: The contact lens applicator has a part which keeps the eyelids open and another which places the contact lens on the eye. There are also pneumatic actuators to place the lens on the eye or to remove it. There are two flexible, adhesive, pads which separate under the action of a flexible strip and keep the eyelids open. There are two circular parts, one inside the other, and a sleeve to apply the lens to the eye. A suction grip also fits and removes the lens.
Patent FR-2497428-A1 (FR)
Title: High voltage IIL logic gate - has NPN transistor base to injection input, collector to output and emitter region at least as large as that of inverter transistor
Inventor: RENOUS CLAUDE
IPC: H03K19/091
Filed: 1980-12-29
Abstract: The logic gate has an injection PNP transistor (T1) and an inverting NPN transistor. The collector and base of the PNP transistor (T1) are connected to the base and emitter of the NPN transistor (T2) respectively. The injected current is fed into the emitter of the PNP transistor (T1) and a logic signal is input into the base of the NPN transistor (T2). In this operator, another NPN transistor (T3) is added, and its base is connected to the injecting input. The emitter is connected to one collector of the original NPN transistor (T2) and its collector forms the output of the operator. The emitter surface of this additional NPN transistor (T3) is at least as large as the emitter surface of the original NPN transistor (T2).
Patent FR-2500231-A1 (FR)
Title: Procede et machine de fabrication d'un circuit magnetique enroule et circuit magnetique realise selon ce procede
Inventor: BREDEL PIERRE
IPC: H01F27/25
Filed: 1981-02-13
Abstract: L'EXTREMITE 17 DE LA BANDE DE TOLE MAGNETIQUE FORMANT LE TORE ENROULE 10 EST MAINTENUE PAR AGRAFAGE D'UNE LANGUETTE 22 FORMEE DANS LA TOLE AVANT ENROULEMENT DE LA DERNIERE SPIRE. LA LANGUETTE 22 TRAVERSE UN ORIFICE 18 POINCONNE SIMULTANEMENT. LE TORE ENROULE PEUT ETRE UTILISE DANS UN TRANSFORMATEUR DE DETECTION DE COURANTS DIFFERENTIELS.
Patent FR-2477456-A1 (FR)
Inventor: LOWREY KENNETH WILLIAM
IPC: B24C11/00
Filed: 1981-03-02
Abstract: A shot blasting medium, comprising a plurality of discrete particles which in use is able to clean a surface at which it is directed, substantially all of the particles having a coating comprising means for protecting the surface and a carrier for that means. The coating may include a biocide which inhibits the inception of marine growth for as much as eight minutes.
Patent FR-2500950-A1 (FR)
Inventor: BOPP LOUIS ARTHUR
IPC: B29C48/05
Filed: 1981-03-02
Abstract: The invention relates to an improved insulation for electrical cables and an improved process for producing the insulation. Cross-linked polyethylene insulation is too stiff, in particular in high-voltage cables which require a thick insulation layer. Polypropylene copolymers have electrical properties which are substantially identical to those of polyethylene, but do not have the necessary mechanical strength and must be filled with clay or other fillers which provide the required strength but impair the electrical properties. A novel feature of the process according to the invention is that the extruder screw is used to effect a mixing of the components in an improved polymer system for cable insulation.
Patent FR-2479608-A1 (FR)
Title: Dispositif a onde acoustique de surface et procede de production
Inventor: MINAGAWA SHOICHI
IPC: H03H3/08
Filed: 1981-03-27
Abstract: LA PRESENTE INVENTION CONCERNE UN DISPOSITIF A ONDE ACOUSTIQUE DE SURFACE. SELON L'INVENTION, IL COMPREND UN ORGANE ELASTIQUE, UNE STRUCTURE FEUILLETEE FORMEE SUR UN TRAJET DE PROPAGATION D'UNE ONDE ACOUSTIQUE DE SURFACE DE CET ORGANE ELASTIQUE, ET COMPOSEE D'AU MOINS UNE ELECTRODE EN METAL 3 ET UN ORGANE PIEZO-ELECTRIQUE 2; ET UN MOYEN 5 POUR APPLIQUER UN SIGNAL ELECTRIQUE A L'ELECTRODE; L'ORGANE ELASTIQUE A UNE FACE DISCONTINUE 7 D'IMPEDANCE ACOUSTIQUE; LA STRUCTURE FEUILLETEE PRODUIT UNE ONDE LONGITUDINALE A LORS DE L'APPLICATION DU SIGNAL ELECTRIQUE, QUI EST REFLECHIE PAR LA FACE DISCONTINUE 7 POUR FORMER UNE ONDE TRANSVERSALE B. L'INVENTION S'APPLIQUE NOTAMMENT AUX TRANSDUCTEURS A HAUTE FREQUENCE ET A LARGE BANDE.
Patent FR-2504091-A1 (FR)
Title: Semi rigid pack with flexible outlet tube - for controlled discharge of part of the contents
Inventor: GOURLET JACQUES
IPC: B65D77/06
Filed: 1981-04-16
Abstract: A box pack with a flexible lining for storing liq. in small bulk quantities incorporates a flexible tube on the liner to allow part of the contents to be discharged and the remainder then retained by folding and/or clamping the tuning. Easier to control the rate and quantity of discharge than by use of containers which the corner of a semi-rigid liner is cut off and the contents discharged by tipping, esp. if the full container is too heavy to be handled easily. The flexible tube is a simpler and cheaper device to include or fit to the lining than a conventional stopcock, esp. if lining and tube are made of or coated with a thermoplastic material, e.g. polyethylene. The junction between the lining and the tube is pref. supported by a short rigid tubular insert. The tubing may be sized to accept a spigot coupling to a separate tap. For use in a so-called 'American' pack, the tubing may be integrated with a corner fold which provides a pocket at one end of the liner.
Patent FR-2504019-A1 (FR)
Title: Hollow ball for games - has second ball inside it with space between them filled with liquid
IPC: A63B37/08
Filed: 1981-04-16
Abstract: The hollow ball (1) for games has another hollow or solid ball (2) inside it. The space (4) between these two is filled with a liquid, to allow the inner ball to turn independently of the outer. The inner ball can be solid, or be filled with a liquid (3) or solid. The space between the two balls can be filled with a solid material.
Patent FR-2489548-A1 (FR)
Title: Procede et appareil pour commander un systeme de refrigeration pour le transport sous froid
Inventor: HOWLAND LELAND LOUIS
IPC: B60H1/00
Filed: 1981-04-28
Abstract: PROCEDE ET APPAREIL POUR COMMANDER UN SYSTEME DE REFRIGERATION POUR LE TRANSPORT SOUS FROID. UN RELAIS AUXILIAIRE DE COMMANDE CR EST UTILISE EN LIAISON AVEC UN APPAREIL DE CONTROLE CM POUR FAIRE FONCTIONNER LE COMPRESSEUR A SA VITESSE INFERIEURE AUSSI LONGTEMPS QUE LA TEMPERATURE DETECTEE DANS L'ESPACE DESSERVI SE TROUVE DANS UNE GAMME RELATIVEMENT ETROITE DE TEMPERATURES AU-DESSUS ET EN DESSOUS DU POINT DE CONSIGNE. LE FONCTIONNEMENT A LA VITESSE INFERIEURE EST MAINTENU MALGRE LES APPELS CREES PAR UN THERMOSTAT POUR UN FONCTIONNEMENT A LA VITESSE SUPERIEURE LORSQUE LA TEMPERATURE S'ECARTE DE LA GAMME ETROITE, A MOINS QUE CES APPELS PERSISTENT SANS INTERRUPTION PENDANT UNE PERIODE PREDETERMINEE DE TEMPS, DANS CE CAS LE FONCTIONNEMENT DU SYSTEME EST AUTORISE PAR L'APPAREIL DE CONTROLE 46 A PASSER A LA VITESSE SUPERIEURE. APPLICATIONS: NOTAMMENT A LA REFRIGERATION DES MOYENS DE TRANSPORT TELS QUE DES REMORQUES ET AUTRES VEHICULES ANALOGUES.
Patent FR-2505190-A1 (FR)
Title: Medical appts. for continuous slow transfusion by syringe piston - displaced at controllable rate by pneumatic cylinder(s) piston rod(s)
Inventor: LIEVIN ROBERT
IPC: A61M5/145
Filed: 1981-05-06
Abstract: Medical transfusion appts. of the type in which a syringe body is fixed on a baseplate and the syringe piston can be continuously displaced by virtue of its connection to a powered driving assembly, is claimed. The driving assembly comprises a pneumatic cylinder on an axis parallel to the syringe and also fixed on the baseplate. The pneumatic cylinder is open to atmos. at one end while the other end is connected to a supply of compressed gas, partic. air, via a pressure regulator. The piston of the pneumatic cylinder has an integral rod which is externally coupled to the piston rod of the syringe. The appts. is used for continuous, very slow rate medical transfusions. Since the syringe is not connected to an electrically powered driving assembly, the possibility of electrically induced, cardiac fibrillation is eliminated. Very precise control of transfusion rate means that there is no longer any need to dilute transfusion solns. with glucose which can result in hardening of vein walls and local inflammation.
Patent FR-2505414-A1 (FR)
Title: Rotary mechanism with pair of parallel-axis rotors - has vanes on one rotor to contact internal wall of bore in second rotor
Inventor: EVERSHED RONALD CHARLES
IPC: F01C1/44
Filed: 1981-05-11
Abstract: First and second rotors have cylindrical bores about the axes of which they are arranged to rotate. The rotational axes are spaced apart but parallel, with the second rotor located within the bore of the first rotor. Vanes attached to one of the rotors make continuous sealing sliding contact with the wall face of the other rotor. Inlet and outlet ports are provided in an elongated hollow cylindrical body concentric with the inner rotor. The inner rotor has communication with the inlet corresponding with the chamber of increasing volume and communication with the outlet corresponding with the chamber of decreasing volume.
Patent FR-2508624-A1 (FR)
Title: Munition telle que grenade a main, en particulier pour la lutte contre les blindes
Inventor: SCHILLING MICHEL
IPC: F42B12/20
Filed: 1981-06-26
Abstract: MUNITION DESTINEE A ETRE LANCEE A LA MAIN, TELLE QUE GRENADE A MAIN, NOTAMMENT A EFFET DE CHARGE CREUSE, CARACTERISEE EN CE QU'ELLE COMPORTE UN SYSTEME DE STABILISATION UTILISANT LES EFFETS CUMULES D'UNE OGIVE LESTEE 4 ET D'UN EMPENNAGE DEPLOYANT 7, PROVOQUANT UNE STABILISATION AERODYNAMIQUE DE LA MUNITION PERMETTANT D'AMELIORER SON EFFICACITE QUELLES QUE SOIENT LES CONDITIONS DE LANCEMENT ET D'IMPACT. L'EMPENNAGE DEPLOYANT, PIVOTE SUR L'ARRIERE DE LA MUNITION ET MAINTENU EN PLACE PAR UN CAPUCHON 9 VERROUILLE PAR UNE GOUPILLE DE SECURITE 10 ASSURANT LE BLOCAGE DU PERCUTEUR 11 DESTINE A LA MISE A FEU DE LA MUNITION.
Patent FR-2486663-A1 (FR)
Title: Conduit souple en fibres optiques et son procede de fabrication
Inventor: STRACK RICHARD R
IPC: G02B6/06
Filed: 1981-07-06
Abstract: ON PRODUIT UN FAISCEAU FLEXIBLE CONDUCTEUR D'IMAGES FORME DE FIBRES OPTIQUES EN JUXTAPOSANT ET ETIRANT UNE SERIE DE FIBRES DE VERRE 20 GAINEES DE VERRE EXTRACTIBLE. L'ENSEMBLE ETIRE EST COUPE A LA LONGUEUR VOULUE ET LES TIGES DE VERRE INTERSTITIELLES 22 SONT EXTRAITES DE LA PARTIE DE LA PIECE COUPEE. APPLICATION A LA FABRICATION D'ENDOSCOPES INDUSTRIELS ET MEDICAUX.
Patent FR-2488051-A1 (FR)
Title: Membrane microporeuse et hydrophile a cellules ouvertes, separateur de batterie et batterie l'utilisant, procede pour rendre hydrophile une membrane microporeuse normalement hydrophobe, et procede pour reduire la penetration, dans un separateur de batterie, des ions derives des electrodes
Inventor: TASKIER HENRY T
IPC: H01M50/457
Filed: 1981-07-30
Abstract: LA PRESENTE INVENTION CONCERNE UNE MEMBRANE MICROPOREUSE ET HYDROPHILE A CELLULES OUVERTES. SELON L'INVENTION ELLE COMPREND UNE MEMBRANE MICROPOREUSE NORMALEMENT HYDROPHOBE, SUR AU MOINS UNE SURFACE DE LAQUELLE EST DEPOSE UN REVETEMENT COMPRENANT UN POLYMERE CHOISI DANS LE GROUPE CONSISTANT EN ESTERS DE CELLULOSE ET ALCOOL POLYVINYLIQUE, CE REVETEMENT AYANT UNE EPAISSEUR A SEC DE L'ORDRE DE 1 A ENVIRON 25 M, ET UN AGENT TENSIO-ACTIF DISPOSE DANS LA MEMBRANE MICROPOREUSE ENDUITE DE FACON ET AU MOINS EN UNE QUANTITE SUFFISANTE POUR RENDRE HYDROPHILE LA MEMBRANE MICROPOREUSE FORMANT SUBSTRAT. L'INVENTION S'APPLIQUE NOTAMMENT AUX SEPARATEURS POUR BATTERIES ALCALINES.
Patent FR-2488653-A1 (FR)
Title: Moteur a combustion interne
Inventor: NAMBA YUZURU
IPC: F02B31/08
Filed: 1981-08-13
Abstract: DANS CE MOTEUR A COMBUSTION INTERNE COMPORTANT UN CIRCUIT D'ADMISSION SECONDAIRE 22 QUI DEBOUCHE DERRIERE LA SOUPAPE D'ADMISSION 10 POUR ENGENDRER UN MOUVEMENT TOURBILLONNAIRE DANS LA CHAMBRE DE COMBUSTION PENDANT LA COMBUSTION, L'EXTREMITE DE SORTIE DU CIRCUIT D'ADMISSION QUI PEUT ETRE CONSTITUEE PAR UN TUBE RAPPORTE TERMINE PAR UNE BUSE 22A, EST ORIENTEE DE MANIERE QUE LA PROJECTION DE CETTE DIRECTION SUR UN PLAN PERPENDICULAIRE A L'AXE DU CYLINDRE FORME AVEC LA LIGNE QUI JOINT LE CENTRE DE L'ORIFICE D'ADMISSION 6 A L'AXE DU CYLINDRE UN ANGLE COMPRIS ENTRE 20 ET 110 DE PART ET D'AUTRE DE CETTE LIGNE.
Patent FR-2495221-A1 (FR)
Title: Structure de conduit d'admission pour moteurs a combustion interne
Inventor: YOKOYAMA HIROSHI
IPC: F02B31/00
Filed: 1981-11-26
Abstract: Structure de conduit d'admission pour moteurs à combustion interne. Le but de l'invention est d'améliorer la turbulence du mélange air-carburant introduit dans un moteur fonctionnant avec un mélange appauvri. Selon l'invention un passage d'admission primaire 18 débouche dans un passage d'admission secondaire 19 qui débouche dans la chambre de combustion, et le passage d'admission primaire, à faible section, se termine de préférence par un bec 24 faisant saillie dans le passage d'admission secondaire. Avantageusement, l'axe de ce bec croise celui de la tige de soupape ou est décalé par rapport à celui-ci. (CF DESSIN DANS BOPI)
Patent FR-2517290-A1 (FR)
Title: Zeolite-Y prepn. - by reacting silica, alumina, sodium hydroxide and water in presence of sodium metasilicate
Inventor: LATOURRETTE BERTRAND
IPC: C01B39/02
Filed: 1981-11-27
Abstract: Y-type zeolite is produced by heating a reaction mixt. contg. silica, alumina, NaOH and water to form a zeolite and a mother liquor contg. NaOH and excess silica, the mother liquor being combined with an acidic Al salt to obtain a ppted. hydrogel of silic and alumina, which is used as part of a subsequent reaction mixt. The improvement is that the reaction mixt. also contains a hydrated Na metasilicate and the molar ratios of the reactants in the reaction mixt. are as follows:- SiO2/Al2O3:5-15; Na2O/SiO2: 0.2-2; H2O/Na2O:12-200. The hydrated Na metasilicate is pref. Na2SiO3.5H2O or Na2SiO3.9H2O. Amt. of SiO2 originating from the hydrated Na metasilicate is 1-100%, pref. 2-60, esp. 5-15%. Unlike US 4164551 the process does not require the presence of nucleating sites and is therefore simpler. The compsn. of the reaction mixt. can be varied within a large range.
Patent FR-2495325-A1 (FR)
Title: Electrode potentiometrique
Inventor: ROSS JAMES W JR
IPC: G01N27/30
Filed: 1981-11-27
Abstract: L'invention concerne les électrodes potentiométriques destinées aux mesures de potentiels électrochimiques. Une structure d'électrode potentiométrique comprend notamment, un conducteur 28 en métal précieux tel que du platine, en contact avec un électrolyte 26 qui comprend un couple redox réversible, au point de vue thermodynamique, ce qui améliore considérablement le temps de réponse de l'électrode à des changements de la température ambiante. Pour des électrodes contenant des substances tampon internes, on peut sélectionner le couple redox de façon que son coefficient de température soit opposé à celui de la substance tampon, ce qui rend l'électrode pratiquement insensible à la température. Application à l'instrumentation analytique. (CF DESSIN DANS BOPI)
Patent FR-2509342-A1 (FR)
Title: Canalisation de visite
IPC: E03F7/04
Filed: 1981-12-23
Abstract: CANALISATION DE VISITE CONSTITUEE PAR UN TRONCON DE CANALISATION DANS LEQUEL DEBOUCHE A PARTIR DU HAUT UN PUITS DE VISITE OU CUVELAGE OBTURABLE PAR UN COUVERCLE IMMOBILISABLE, AINSI QU'AU MOINS UN OBTURATEUR ANTI-RETOUR LOGE DE MANIERE EXTRACTIBLE DANS LA CANALISATION DE VISITE ET DOTE D'UN CORPS DE FERMETURE APPLICABLE AUTOMATIQUEMENT DANS UNE DIRECTION DE CIRCULATION CONTRE UN SIEGE D'ETANCHEITE. L'OBTURATEUR ANTI-RETOUR R1, R2 EST RAPPORTE SUR LA FACE INFERIEURE 8 DU COUVERCLE 7, EN ETANT AVANTAGEUSEMENT MONOBLOC AVEC CELUI-CI, DE TELLE SORTE QUE L'OBTURATEUR ANTI-RETOUR PEUT ETRE MIS EN POSITION ADAPTEE AU FONCTIONNEMENT DANS LA CANALISATION DE VISITE LORS DE LA FIXATION DU COUVERCLE DANS L'OUVERTURE DU PUITS.
Patent FR-2519449-A1 (FR)
Title: Intrusion alarm triggering circuit for Doppler effect detector - uses timing circuits in triggering and reset circuits for shift register to ensure detected movement is valid
IPC: G01S13/56
Filed: 1981-12-31
Abstract: An integrated circuit voltage stabiliser (24) is powered from vatteries through a protection diode (21) to which a filter capacitor (C22) is connected. The stabiliser powers various circuits including the microwave detector circuit (10) comprising the emitting (12) and receiving diodes (13). The Doppler output from the detector is applied to a comparator (30) which produces a logic 1 state to signal an alarm condition. The comparator output is amplified and filtered by a low pass filter prior to wave shaping by a positive feedback amplifier. This signal drives a trigger circuit to operate a relay in the alarm circuit. The trigger circuit contains timers to prevent false triggering of the alarm and to ensure it is held on for a period after the detected movement has dissappeared.