baber/WOPTO huggingface dataset:
Patent FR-2494328-A1 (FR)
Title: Automatic heat enclosing cover for swimming pool - has motor-driven rollers carrying covering material in frame mounted on casters
IPC: E04H4/10
Filed: 1980-11-19
Abstract: The cover includes a frame mounted to roll alonq on casters. Two of the four casters which support the frame are lockable. The frame holds together two end cases between which there are parallel cylindrical rollers. The cylindrical rollers carry the rolled up covering material. An electric motor in one end case is connected by pulleys to drive the cylindrical rollers in either direction to roll up or unroll the cover. The assembly also includes a motor driven pump which provides a bactericidal spray in order to prevent the growth of bacteria on the underside of the cover. The pump operates when the covers are being extended. The motor is driven by a 24 volt battery, also mounted within the end casing of the structure.
Patent FR-2495559-A1 (FR)
Title: Electromagnetic emergency brakes for tram or train - uses brake which runs on rails and has hardened steel pole faces with sintered bronze friction inserts
Inventor: EUDIER MICHEL
IPC: B61H7/08
Filed: 1980-12-05
Abstract: The emergency brakes of a train or tramcar running on steel rails (5) use an electro-magnet carried close the the rail and, when energised, moving into contact with the rail. Friction material inserted at intervals along the pole face increase the overall coefficient of friction and reduce the wear of the brake. The electromagnetic brake is made up of a ferromagnetic 'U' section core (1) with an energising coil (3) wound around its horizontal limb. Facing the rail, pole pieces of hardened steel (4) are fixed to the core. At intervals along each of these pole pieces inserts (6) of a high friction coefficient, hand sintered bronze material provide improved overall friction and wear properties to the brake.
Patent FR-2473053-A1 (FR)
Title: Metal comportant un revetement et son procede de fabrication
Inventor: TANAKA MICHIO
IPC: C09D5/08
Filed: 1980-12-19
Abstract: METAL COMPORTANT UN REVETEMENT ET SON PROCEDE DE FABRICATION. CE METAL A ETE FABRIQUE EN APPLIQUANT SUR UNE PLAQUE METALLIQUE UNE COMPOSITION COMPRENANT: I.AU MOINS UN ELEMENT CHOISI PARMI LE GROUPE CONSTITUE PAR A.DU BIS(ISOCYANATOMETHYL)CYCLOHEXANE ETOU SON PRODUIT D'ADDITION, BLOQUES AVEC UN AGENT DE BLOCAGE, ET PAR B.UN ISOCYANATE BLOQUE AVEC L'ETHYLENE-IMINE, ET II.UNE RESINE DE POLYOL, ET EN CHAUFFANT LA PLAQUE METALLIQUE REVETUE AINSI OBTENUE POUR DURCIR LA MATIERE DE REVETEMENT. LA PELLICULE REVETANT AINSI LA PLAQUE METALLIQUE EST COMPLETEMENT EXEMPTE DE JAUNISSEMENT ET DE DEGRADATION THERMIQUE ET MONTRE EGALEMENT UNE DURETE ET DES RESISTANCES A LA FLEXION, AU TACHAGE, ET AUX PRODUITS CHIMIQUES PLUS ELEVEES. APPLICATION DU METAL AINSI REVETU COMME MATERIAU DE CONSTRUCTION ET COMME MATERIAU POUR LES APPAREILS ELECTRIQUES LEGERS, TELS QUE LES FRIGORIFIQUES, ETC.
Patent FR-2496669-A1 (FR)
Inventor: NEDELEC LUCIEN
IPC: C07J1/00
Filed: 1980-12-23
Abstract: Novel steroids of the formula I' wherein R is selected from the group consisting of R1 and R2, R1 is selected from the group consisting of alkyl of 1 to 8 carbon atoms and alkenyl and alkynyl of 2 to 8 carbon atoms R2 is -(CH2)n-R3, n is an integer from 1 to 8 and R3 is selected from the group consisting of free or protected -OH, free or protected -NH2, monoalkyl and dialkylamino with 1 to 6 carbon atoms, a free, esterified or salified -COOH and halogen X and Y together form or X is OH and Y is -CH2-CH2-COOM, M is selected from the group consisting of hydrogen, an alkali metal and -NH4, Ra is selected from the group consisting of hydrogen and methyl, the dotted line in the I(2)-position indicates the optional presence of a double bond and the wavy line indicates that R may be in the alpha - or beta -position, with the proviso that R is not R1 or R2 when n is 1 and R3 is halogen, when the 1(2) bond is a simple bond and when Ra is -CH3, R3 is not a free carboxyl when Y is -CH2-CH2-COOM in which M is an alkali metal or -NH4 and R3 is not a salified carboxyl when Y is -CH2-CH2-COOH having aldosterone antagonistic properties and increases aqueous sodium diuresis while conserving organic potassium without secondary hormonal effects and their preparation.
Patent FR-2498681-A1 (FR)
Title: Blind tube for silent expansion of pressurised gas - has part of tube pierced by radial holes and wrapped in wire gauze which has greater axial length
Inventor: BONNET PIERRE
IPC: F04B39/00
Filed: 1981-01-28
Abstract: The tubular silencer (2) permits the expansion of e.g. an automobile exhaust gas under pressure. It is closed at one end (3) and admits the gas at the other. Part of the tube incorporates radial holes (8) and is surrounded by wire gauze (16) of a greater axial length, allowing the gas to escape in all directions. A co-axial outer-tube (14) in perforated sheet metal may form a chamber containing the gauze, an intermediate tube or tubes may be sited between the first tube and the gauze to provide for second stage expansion. A casing (18) with or without a sound-absorbent lining (25) may guide the gas towards an outlet.
Patent FR-2500036-A1 (FR)
Title: Solar captor breeze block - has channel in one side sealed by panel transparent to solar radiation and other formed by insulating material
IPC: F24S10/50
Filed: 1981-02-18
Abstract: The block (1) has a groove (2) with perforations (3,7) in the bottom and top walls of the groove. The groove is sealed by a cover (4) in material transparent to the suns rays and the bottom of the groove is dressed with thermal insulation (5). The face (6) of the insulation in contact with the air is covered with a dark colour material absorbing the solar rays. The top row of coupled blocks is surmounted by thermal insulating sheath (8) having one or several exit vents (10) with orientatable blade, an air and water exchanger (9) and on the outside one or more movable shutters (11).
Patent FR-2480116-A1 (FR)
Title: Appareil de soins medico-dentaires
Inventor: PIETSCHMANN HELMUT
IPC: A61G15/16
Filed: 1981-04-09
Abstract: CET APPAREIL COMPREND DES DISPOSITIFS DE RAPPEL DES MOYENS DE FONCTIONNEMENT AUX INSTRUMENTS, ET IL EST CARACTERISE EN CE QUE DES GENERATEURS DE SIGNAUX DECLENCHANT LE RAPPEL DES CANALISATIONS SONT PLACES DANS UNE POSITION INTERMEDIAIRE SITUEE, DANS L'ESPACE, ENTRE LES POSITIONS DE TRAVAIL ET LES POSITIONS DE REPOS DES INSTRUMENTS 2, ET EN CE QUE CES GENERATEURS DE SIGNAUX PEUVENT ETRE ATTEINTS PAR L'UTILISATEUR, TANDIS QUE LA MAIN DE CELUI-CI QUI GUIDE L'INSTRUMENT A REMETTRE EN PLACE EFFECTUE LE TRAJET NATUREL DE REMISE EN PLACE AVEC TOUT AU PLUS DE MINIMES DEVIATIONS DE CE TRAJET. APPLICATION A L'ART DENTAIRE.
Patent FR-2480133-A1 (FR)
Title: Procede de separation d'un liquide contenant des impuretes, notamment dans la circulation du schlamm de charbon
Inventor: MRQWIEC STANISLAW
IPC: B03B9/00
Filed: 1981-04-13
Abstract: LE LIQUIDE CONTENANT DES IMPURETES SOUS FORME DE GRAINS FINS DE CHARBON ET DE ROCHE STERILE EST DIRIGE VERS DES MULTIHYDROCYCLONES ROTODYNAMIQUES 1 POUR SEPARATION DES GRAINS DE CHARBON DE LA ROCHE STERILE; L'EFFLUENT 8 CONTENANT LES GRAINS DE CHARBON ETANT DIRIGE VERS UN TAMISEUR DE DESHYDRATATION 2, TANDIS QUE L'EFFLUENT DE DEVERSEMENT 7 CONTENANT LES GRAINS DE ROCHE STERILE EST DIRIGE, POUR SUBIR UNE SEDIMENTATION, DANS UN CLARIFICATEUR A SEDIMENTATION LIBRE 3, DONT L'EFFLUENT DE DEVERSEMENT, CONSTITUE PAR DU LIQUIDE TECHNOLOGIQUEMENT PUR EST RECYCLE, LE PROCESSUS ENTIER ETANT REALISE AVEC CIRCULATION FERMEE DU LIQUIDE.
Patent FR-2480307-A1 (FR)
Title: Procede pour la production de l-proline par fermentation
Inventor: TSUCHIDA TAKAYASU
IPC: C12N15/52
Filed: 1981-04-14
Abstract: L'INVENTION A POUR OBJET UN PROCEDE DE PRODUCTION DE L-PROLINE PAR FERMENTATION, UTILISANT DES MUTANTS OBTENUS PAR MODIFICATION GENETIQUE. SELON L'INVENTION, ON CULTIVE DANS UN MILIEU DE CULTURE UN MICRO-ORGANISME PRODUCTEUR DE L-PROLINE ET ON RECUEILLE LA L-PROLINE ACCUMULEE DANS LE MILIEU DE CULTURE, LEDIT MICRO-ORGANISME ETANT OBTENU PAR INCORPORATION, DANS UNE SOUCHE RECEPTRICE DU GENRE ESCHERICHIA, D'UN PLASMIDE HYBRIDE DANS LEQUEL EST INSERE UN FRAGMENT D'ADN PORTANT L'INFORMATION GENETIQUE RELATIVE A LA PRODUCTION DE L-PROLINE, LEDIT FRAGMENT ETANT DERIVE D'UNE SOUCHE DONNEUR DU GENRE ESCHERICHIA QUI EST RESISTANTE A UN ANALOGUE DE LA PROLINE.
Patent FR-2506969-A1 (FR)
Title: Single wire power supply for electronic thermostat - includes triacs to switch power to water pump motor in series with transformer primary windings
IPC: G05D23/19
Filed: 1981-05-26
Abstract: The arrangement uses a transformer (T) on the core of which formed a current transformer winding (T1) and also a conventional mains transformer winding (T2) which operates in conjunction with a secondary winding (T3). A triac (S1) connects the two windings on the primary side in series while a second triac (S2) connects the current transformer winding to the mains supply. A water pump (3) is connected in series with the main supply. The triacs are triggered from a capacitive (C1,C2) voltage divides which drives a diode bridge (D) with a transistor (T) connected across it. The transistor is switched by a direct or optical base drive circuit (46) driven from the thermostat (4). The transistor switches on when the temp. falls below a demand value and causes the triacs to switch to connect the current winding to the mains supply to allow the pump to operate. The system is partic. intended for domestic central heating.
Patent FR-2487160-A1 (FR)
Title: Machine agricole utilisable dans les vergers, avec capotage formant deflecteur
Inventor: OKA KEN KENGI
IPC: A01D34/82
Filed: 1981-07-08
Abstract: CETTE MACHINE, DESTINEE A ETRE UTILISEE DANS LES VERGERS, EST AGENCEE DE FACON A PASSER AU-DESSOUS DES BRANCHES. ELLE EST MUNIE D'UN CAPOTAGE 58 QUI A POUR BUT DE SUPPRIMER OU DE REDUIRE AU MINIMUM L'ENDOMMAGEMENT DES BRANCHES ET DES FRUITS QU'ELLE PORTE. LA MACHINE COMPREND UN SUPPORT DE ROUE 34 EQUIPE D'UNE ROUE PORTEUSE 30 ET POUVANT ETRE REGLE PAR RAPPORT AU CORPS PRINCIPAL 10 DE LA MACHINE, CE SUPPORT DE ROUE 34 ETANT COMBINE A UN GARDE-BOUE 72 SUPPORTE PAR LUI INDEPENDAMMENT DU CORPS. UN ELEMENT DE CAPOTAGE 78 PORTE PAR LE CORPS CHEVAUCHE LE GARDE-BOUE 72 AFIN DE COMBLER L'INTERVALLE QUI DEMEURE AUTREMENT PRESENT ENTRE LE GARDE-BOUE 72 ET LE CORPS 10, CET INTERVALLE ETANT RECOUVERT DANS TOUTES LES CONDITIONS DE REGLAGE DE LA ROUE 30, DU SUPPORT DE ROUE 34 ET DU GARDE-BOUE 72.
Patent FR-2486849-A1 (FR)
Title: Rectifieuse destinee a executer des rainures presentant des flancs a surface courbee transversalement a la direction de la profondeur des rainures
Inventor: OPPELT PETER
IPC: B24B27/00
Filed: 1981-07-15
Abstract: UNE RECTIFIEUSE DESTINEE A EXECUTER DANS DES PIECES METALLIQUES 23 DES RAINURES DONT LES FLANCS PRESENTENT DES SURFACES COURBEES TRANSVERSALEMENT A LA PROFONDEUR DES RAINURES, EN PARTICULIER A REALISER DES RAINURES DE RETENUE A FLANCS COURBES DANS LA BASE D'AUBES DE TURBINES, COMPORTE UN PORTE-PIECE 22 MONTE SUR UNE TABLE INCLINEE 19 DE FACON A POUVOIR COULISSER DANS UNE DIRECTION Z' INCLINEE D'UN ANGLE A PAR RAPPORT A LA DIRECTION Z DE L'AXE DES BROCHES PORTE-MEULE 2, 3, LE COULISSEMENT DU PORTE-PIECE DANS LA DIRECTION Z' ETANT COMMANDE DE FACON A S'EFFECTUER EN CORRELATION FIXE AVEC LE MOUVEMENT DE LA TABLE 17 DANS LA DIRECTION X TANGENTIELLE AUX MEULES 4, 8, 9.
Patent FR-2511371-A1 (FR)
Inventor: ALOUP JEAN-CLAUDE
IPC: C07D405/04
Filed: 1981-08-11
Abstract: New heterocyclic nitriles of the formula: (I) wherein (i) Het represents a heterocyclic radical of aromatic character containing one or two nitrogen atoms selected from pyrid-3-yl, pyrid-4-yl, pyridazinyl, pyrazinyl, pyrimidinyl, quinolyl, imidazolyl, naphthyridinyl, quinoxalinyl and quinazolinyl, X represents an oxygen atom and Y represents a valency bond or a methylene radical, or altenatively X represents a sulphur atom and Y represents a sulphur atom, a valency bond or a methylene radical, or (ii) Het represents the pyrid-2-yl radical, X represents an oxygen atom and Y represents a valency bond or a methylene radical, or alternatively X represents a sulphur atom and Y represents a sulphur atom or a methylene radical, are useful, in particular, as intermediates for the preparation of therapeutically useful heterocyclic thioformamides by converting the depicted cyano radical into a grouping -CSNHR wherein R represents a hydrogen atom or an alkyl (C1-4) radical.
Patent FR-2513935-A1 (FR)
Title: Heat treating appts. for blow moulded articles - having a cavity defined by members differentially heatable along their length to impose different crystallinity modifications
Inventor: BRADY THOMAS EDWIN
IPC: B29C71/02
Filed: 1981-10-01
Abstract: A blow moulded plastics article, e.g. of polyethylene terepthalate, is heat teated differentially over its surface to modify the crystallinity in different ways in different areas in a cavity defined by members split into sections each of which can be heated differentially, or even cooled. In the illustrated embodiment, the members may define the blowing mould or a separate heat treating cavity. Each member comprises portions sepd. by insulating layers, each position contg. independently operable fluid heat exchange channels. Various sections of a blown article can be given a desired crystallinity to modify the strength, clarity, etc. of the article. A blown bottle may be so treated, the neck and base regions being cooled to prevent crystal growth, whilst the body and heel portions are heated to induce crystal growth.
Patent FR-2516423-A1 (FR)
Title: Developing cutting machine for tubes - preparing ends for welded joints
IPC: B23K7/00
Filed: 1981-11-16
Abstract: Tube ends are shaped for welding by torch cutting on a "developing" cutting machine. The rigidly supported tube passes through an opening in the centre of a rotating structure to which the cutting head is mounted. This consists of a crown wheel, driven by a stepping motor controlled by a computer. Within the cutting head, controlled by the same computer is a means of altering the angle of the torch relative to the axis of the tube, and its distance from the axis. Another stepping motor, also controlled by the computer, moves the head axially along the tube. The machine can be controlled to cut and chamfer tubes ends for a wide variety of joint configurations, and tube dia. The rotating structure is lighter than that used in known types of barrel or drum machines.
Patent FR-2516971-A1 (FR)
Title: Dispositif de commande a distance d'un organe de verrouillage, notamment pour commander l'acces a un reservoir de carburant
Inventor: BLANC ROLAND
IPC: E05B53/00
Filed: 1981-11-23
Abstract: CET AGENCEMENT VISE A APPORTER UNE SECURITE SUPPLEMENTAIRE EN INTERDISANT LA COMMANDE DU DEVERROUILLAGE DU BOUCHON DE RESERVOIR OU DE LA TRAPPE D'ACCES A CE BOUCHON SI LE FREIN DE STATIONNEMENT N'EST PAS SERRE. A CET EFFET L'ORGANE D'ACTIONNEMENT 8 D'UN ORGANE DE VERROUILLAGE (NON REPRESENTE) NE PEUT ETRE MAINTENU EN POSITION DE DEVERROUILLAGE QUE SI UN ORGANE DE RETENUE 14 EST LUI-MEME LIBERE, CE QUI NE SE PRODUIT QUE SI LE LEVIER 3 DE SERRAGE DU FREIN OCCUPE SA POSITION DE SERRAGE.
Patent FR-2496289-A1 (FR)
Title: Montre ayant un affichage analogique et un affichage numerique
Inventor: BESSON RENE
IPC: G04B19/00
Filed: 1981-12-10
Abstract: L'INVENTION CONCERNE UNE MONTRE COMPORTANT A LA FOIS DES ORGANES D'AFFICHAGE ANALOGIQUE DE L'HEURE MOBILES EN REGARD D'UN CADRAN ET UN DISPOSITIF D'AFFICHAGE NUMERIQUE ENTOURE PAR LEDIT CADRAN. CETTE MONTRE EST EQUIPEE EN OUTRE DE MOYENS COMMANDABLES PAR L'UTILISATEUR DE LA MONTRE, POUR QUE LE DISPOSITIF D'AFFICHAGE NUMERIQUE PRENNE SOIT LA COULEUR DU CADRAN, SOIT UNE AUTRE COULEUR. SELON UN MODE DE REALISATION PREFERE, LES MOYENS D'AFFICHAGE NUMERIQUE SONT CONSTITUES PAR UNE CELLULE A CRISTAL LIQUIDE NEMATIQUE EN HELICE 60 DONT L'UN DES POLARISEURS 60B PEUT ETRE PIVOTE AUTOUR D'UN AXE 12 PERPENDICULAIRE A SON PLAN PAR DES MOYENS DE COMMANDE 13A, 14, 15, 17 ACCESSIBLES DEPUIS L'EXTERIEUR DU BOITIER DE LA MONTRE. ON PEUT RENDRE CETTE CELLULE SENSIBLEMENT INVISIBLE EN FAISANT PIVOTER LE POLARISEUR MOBILE 60B POUR POSITIONNER LE PLAN DE POLARISATION DE CE DERNIER SOIT PARALLELEMENT AU PLAN DE POLARISATION DE L'AUTRE POLARISEUR 60C, SOIT PERPENDICULAIREMENT PAR RAPPORT A CE DERNIER, SELON QUE LA COULEUR DU CADRAN 11A ENTOURANT LA CELLULE EST, RESPECTIVEMENT, SOMBRE OU CLAIRE
Patent FR-2511293-A1 (FR)
Title: Appareil pour maintenir en place les filaments de chauffage des matrices
Inventor: STONE HILTON F JR
IPC: B28B7/00
Filed: 1982-01-07
Abstract: LA PRESENTE INVENTION CONCERNE UN APPAREIL POUR MAINTENIR EN PLACE DES FILAMENTS DE CHAUFFAGE DE MATRICE. UN CHASSIS DE MOULE 2 EST UTILISE POUR FABRIQUER UNE MATRICE DE MATIERE CERAMIQUE DANS LEQUEL DES BARRES DE SUPPORT 18 SONT FIXEES DE FACON AMOVIBLE AU SUPPORT DU CHASSIS DU MOULE 2 POUR SOUTENIR UNE PLURALITE DE TIGES 16 S'ETENDANT DANS LE MOULE TOUT EN ETANT ECARTEES DE LA SURFACE 4 OPERATIONNELLE DU MOULE DANS LE CHASSIS 2 POUR SOUTENIR LES FILAMENTS DE CHAUFFAGE 6 DE FACON A LES MAINTENIR ECARTES DE CETTE SURFACE 4 DE MOULE OPERATIONNELLE D'UNE FACON PREDETERMINEE, CES BARRES DE SUPPORT 18 ETANT AMOVIBLES DE SORTE QUE LES TIGES 16 PEUVENT TOUTES ETRE ENLEVEES DE LA MATIERE DE LA MATRICE APRES QU'ELLE ETAIT MISE EN PLACE DANS LE MOULE 2. L'INVENTION EST PAR EXEMPLE UTILISABLE POUR LA FABRICATION DE MATRICES SERVANT AU FACONNAGE DE TOLES METALLIQUES.
Patent FR-2519830-A1 (FR)
Inventor: ATHENES CLAUDE
IPC: H04J3/06
Filed: 1982-01-08
Abstract: 1. A modular digital telephone exchange having several similar and autonomous switching bays and a device for inter-bay synchronization, all the bays being connected on a point-to-point basis, one of the bays, called "pilot bay" (1), comprising a reference oscillator (20) for providing clock signals, the other bays comprising synchronizable oscillators (42), characterized in that each one of said other bays comprises in the data reception channel (14) coming from the pilot bay, and in at least one data reception channel (32, 34) out of the channels coming from other bays, a synchronization signal extraction circuit (27), the outputs of these extraction circuits being connected to a circuit (41) for selecting by priority one signal out of several signals, this signal being the synchronization signal coming from the pilot bay or, in the absence thereof, the synchronization signal coming from one of the adjacent bays to the respective bay, the output of this selection circuit being connected to the control input of the synchronizable oscillator in the considered bay.
Patent FR-2501725-A1 (FR)
Title: Procede et dispositif pour l'evaporation d'un materiau sous vide
Inventor: MOLL EBERHARD
IPC: C23C14/30
Filed: 1982-03-12
Abstract: PROCEDE ET DISPOSITIF POUR L'EVAPORATION D'UN MATERIAU SOUS VIDE PAR BOMBARDEMENT DU MATERIAU A EVAPORER A L'AIDE D'ELECTRONS PROVENANT D'UNE DECHARGE EN ARC A BASSE TENSION ENTRE UNE CATHODE ET UNE ANODE SE TROUVANT DANS LA CHAMBRE D'EVAPORATION; ON APPLIQUE UNE ENERGIE D'EVAPORATION SUPPLEMENTAIRE, AU MOYEN D'UN CANON A ELECTRONS 2 POSSEDANT UNE ENERGIE ELECTRONIQUE SUPERIEURE A 1KEV, AU MATERIAU A EVAPORER; LA SOURCE D'ELECTRONS 11 DE LA DECHARGE EN ARC A BASSE TENSION ET LE CANON A ELECTRONS 2 PEUVENT AVOIR UN AXE COMMUN.
Patent FR-2504920-A1 (FR)
Title: Derives phenylcyclobutyliques, leur procede de preparation et leur application therapeutique
Inventor: JEFFERY JAMES EDWARD
IPC: C07C13/06
Filed: 1982-04-01
Abstract: L'INVENTION A POUR OBJET DES COMPOSES PRESENTANT UNE ACTIVITE PHARMACOLOGIQUE PRECIEUSE, NOTAMMENT COMME ANTI-DEPRESSEURS, REPONDANT A LA FORMULE (I): (CF DESSIN DANS BOPI) DANS LAQUELLE N0 OU 1; R REPRESENTE UN ALCOYLE EN C1 A C6, UN ALCENYLE EN C2 A C6, UN ALCYNYLE EN C2 A C6, UN CYCLOALCOYLE EN C3 A C6, UN CYCLOALCOYLALCOYLE OU UN PHENYLE EVENTUELLEMENT SUBSTITUE LORSQUE N0 OU RH OU UN ALCOYLE EN C1 A C3 LORSQUE N1, RH OU UN ALCOYLE EN C1 A C3, R ETOU RH OU UN GROUPE FORMYLE, ALCOYLE EN C1 A C3, ALCENYLE EN C A C, ALCYNYLE EN C3 A C6, CYCLOALCOYLE EN C3 A C7 OU, ENSEMBLE ET AVEC L'ATOME D'AZOTE SUR LEQUEL ILS SONT FIXES, R ET R FORMENT UN HETEROCYCLE; R ETOU RH OU UN GROUPE HALO, CF, ALCOYLE EN C1 A C3, ALCOXY EN C1 A C3, ALCOYL (EN C1 A C3)THIO OU, ENSEMBLE ET AVEC LES ATOMES DE CARBONE SUR LESQUELS ILS SONT FIXES, R ET R FORMENT UN SECOND NOYAU BENZENIQUE ET R ETOU RH OU UN ALCOYLE EN C1 A C3.
Patent FR-2527791-A1 (FR)
Title: Lubricated coupler for optical fibres - has sleeve impregnated with lubricant which ensures smooth coupling with accurate ferrule alignment
Inventor: GUEN BENOIT LE
IPC: G02B6/38
Filed: 1982-05-28
Abstract: The ferrules, terminating the optical fibres, slide in an acurrately pre-formed sleeve of porous metal impregnated with a lubricant. On screwing up the 2 halves of the coupling the 2 ferrules are held in contact by the shoulders and the sleeve compresses 2 O-rings which ensure rigidity of the assembly and provide a liquid seal. Connection and disconnection is free from wear, coupling alignment is a few microns and dust is excluded from the fibre faces. One arrangement has a highly compressible annular sponge containing liquid of refractive index equal to that of the fibres. On coupling, the sponge squeezes the liquid through radial channels in the sleeve to fill any space between the fibres, ensuring optical continuity. In another variant, the two halves of the coupling are held together magnetically.
Patent FR-2528634-A1 (FR)
Title: Gas laser with capillary tube cavity - has demountable light alloy casing surrounding laser cavity and contg. circulating liq. refrigerant
IPC: H01S3/032
Filed: 1982-06-15
Abstract: Laser action occurs along axis (X-X) between 2 large Brewster windows which are soldered into chambers. The chambers are separate from the main enclosures to avoid pollution by particles from the electrodes. A reservoir communicating with enclosures, maintains gas pressure constant, of particular value during warming-up. A demountable light alloy casing, in 2 parts, surrounding the laser cavity, contains a circulating liquid refrigerant. Cooling is effective because the refrigerant flows close to the discharge in the capillary tube part of the cavity; the laser attains working temp. in 11/2 min. A magnetic circuit around the capillary tube ensures good focussing of the electron stream and low current consumption. Working voltage is 220 ac or dc, which is fairly safe.
Patent FR-2528842-A1 (FR)
Inventor: LEJEMBLE PHILIPPE
IPC: C07D307/36
Filed: 1982-06-16
Abstract: 1. Process for the decarbonylation of furfural with a view to producing furan, this process consisting in heating furfural in the presence of a palladium-based catalyst, placed on a carrier, and in distilling the resulting furan, and being characterized in that, at first, irradiation of the catalyst is carried out by means of ultraviolet radiation.
Patent FR-2533230-A1 (FR)
Title: Improvement to the production of a mixture of acetone and butanol by fermentation of a juice from acidic hydrolysis of Jerusalem artichoke.
Inventor: HEYRAUD ALAIN
IPC: C12P7/28
Filed: 1982-09-20
Abstract: Production of a mixture of acetone and butanol by fermentation of a juice from hydrolysis of Jerusalem artichoke. The hydrolysis is performed in acidic medium and interrupted when the relative content of trimeric sugars, in relation to total sugars, has fallen below 3 %, but before the relative content of dimeric sugars has fallen below 14 %. The figure shows the chromatogram obtained with a juice from a pressing of Jerusalem artichoke tubers; the peaks DP1, DP2, DP3, DP4 and DP5 correspond to the monomers and to the oligomers with a degree of polymerisation of 2, 3, 4 and 5 respectively.