baber/WOPTO huggingface dataset:
Patent FR-2285624-A1 (FR)
Title: Optical semiconductor filter with variable bandwidth - with tuning by band edge displacement by electro-absorption (NL-19.3.76)
IPC: G02F1/025
Filed: 1975-09-17
Abstract: The filter comprises a substrate carrying a multi-layer structure consisting of a limiting, blocking or isolating layer next to the substrate, an active layer and a second limiting layer. Contact layers are provided to apply a bias voltage to vary the limiting characteristic at high energies. A cover layer (19) may be provided on top of the second limiting layer (18), and an antireflection coating may be provided on the inlet end of the filter. Pref. the limiting layers and the active layer consist of epitaxially grown Ga-Al-As. In special forms the limiting characteristic can be arranged for lower energies.
Patent FR-2285466-A1 (FR)
Title: Chromium extn. from iron contg. lateritic ores - finely comminuted to facilitate dissoln. of chromium in acid
IPC: C22B3/04
Filed: 1975-09-19
Abstract: Extraction of chromium from iron-contg. lateritic ores, leaving a residue suitable for recovery of iron, is improved in that the ore is very finely comminuted to produce a fine fraction form which chromium can be easily extracted with an acid; preparing an aq. slurry contg. 0.1-0.5 pt.wt. of H2SO4 per pt. wt. of the ore (pref. the slurry contains more than 20% of solids); leaching the ore at an elevated temp. (pref. 200-300 degrees C) under an elevated press. (pref. 29-71 kg/cm2); sepg. the lye and opt. washing the undissolved residue. Nickel and cobalt may be extracted along with chromium and then selectively sepd. from the lye. The sepn. of Cr from the ore is nearly complete; other metals, esp. Ni, are also removed, so that the residue is suitable for recovery of iron that can be used in steel mfr. The economy of the process is good.
Patent FR-2330236-A1 (FR)
Title: Coding of TV transmission for reception by selected subscribers - is performed by shifting each line with respect to line sync. signal
Inventor: REMY MAURICE
IPC: H04N7/169
Filed: 1975-11-03
Abstract: TV transmissions on general tele diffusion networks using radio channels or cables are cooled to permit only particular subscribers to receive the signals. The coading is performed by shifting each line differently w.r.t. the line sync. signal and decoded at the receiver. A cooling circuit for a SECAM system comprises a separator circuit (8) producing video (9) and frame sync. (10) signals. The sync. signals are passed to a frame regenerator (25) and parity circuit (26). Output from the frame regenerator connects to an initiatisation register (27) and to a line frequency sync. generator (28) which drives a pseudo random digital sequence generator (30) comprising a shift register. A loading register (31) contains an eight bit word defining sequence generator configuration to shift each line w.r.t. the sync signal.
Patent FR-2401263-A1 (FR)
Title: Agent d'ignifugation d'une matiere fibreuse synthetique
IPC: D06M13/405
Filed: 1975-12-10
Abstract: L'invention concerne un agent d'ignifugation comprenant au moins un composé halogéné, un émulsionnant, éventuellement un colloïde protecteur et éventuellement de l'eau ainsi qu'un procédé d'ignifugation de matières fibreuses synthétiques consistant à traiter ces matières avec l'agent d'ignifugation précité et à les soumettre à un traitement thermique à 120-220 degrés C de manière que la quantité de composé halogéné déposée s'élève à 0,5 à 19 % en poids par rapport à la matière fibreuse. L'invention s'applique notamment au polyamide et au polyester.
Patent FR-2335468-A1 (FR)
Title: Calcined refractory brick for industrial furnaces - made from mixt. of periclase, chromite, and chromic oxide
IPC: C04B35/047
Filed: 1975-12-15
Abstract: Calcined, directly-bonded, basic refractory magnesite-chromite moulded brick, in which the matrix contains chromium-enriched spinel structures which bond the individual periclase crystals together. The novelty is that the brick is made using a mixt. by wt of (1) 40-75% periclase contg. min. 94% MgO, (2) 25-60% chromite, and (3) 0.5-10% Cr2O3 powder. The periclase pref. contains 96-99% MgO and the mixt. has an esp. pref. ratio CaO/SiO2 of 0.5: 1 with total SiO2 below 2%. The mixt. is pressed into a brick and calcined at min. 1700 degrees C esp. 1760 degrees C. The mixt. pref. has CaO/SiO ratio max. 1:1, with total SiO2 below 3%, and the pref. mixt. contains (1) 55-65% periclase, (2) 35-45% chromite, (3) 2-7%, Cr2O3, esp. 4% Cr2O3 with size below 0.044 mm, and partic. a max. average size of 10 mu m. Calcining at 1760 degrees C is pref. for min. 4 hrs. Used for linings in industrial furnaces exposed to heavy wear. As compared with conventional bricks, the invention provides, a brick with a significant improvement is working life, better resistance to thermal shock and splitting and better resistance to slag penetration.
Patent FR-2348522-A1 (FR)
Title: Control circuit for pneumatic shift register - has series connection of phase cells each with bistable pneumatic store
Inventor: BOUTEILLE DANIEL
IPC: G06D3/00
Filed: 1976-04-16
Abstract: The odd-number line and even-number line are connected to the output of one pneumatic threshold relay or another which have a supply input and control input, the latter making the connection between supply input and output when the pressure is below the pressure threshold. The even-number line is connected to the control input of one relay. A constant pressure is applied to the supply input of the other relay. This relays control input and the first relays supply input are connected to the output of a pressure breaker supplying a pulse which changes between supply and emptying pressures.
Patent FR-2353195-A1 (FR)
Title: Heating regulator for storage radiators - has external temp. sensor and units to operate contactor according to temp. timing of low tariff electricity
IPC: G05D23/20
Filed: 1976-05-24
Abstract: An electrical regulator is used with storage radiators. It regulates the storage of heat according to the availability of low tariff electricity, and the level of external ambient temperature. It can also extend the accumulation of heat if the ambient temperature drops below a set value. The regulator comprises a temperature sensor and an electrical unit which gives a voltage inversely proportional to the temperature. It also has a normal function unit and an extra function unit, operating a relay and a contactor. The normal function unit and the extra time function unit are identical in construction. Each unit comprises a pulse counter. The counter is initiated by the value of the external temperature and is stopped after a set number of pulses. An emergency battery power supply is also connected to the controller.
Patent FR-2384966-A1 (FR)
Title: Engine utilising perpetually available source of energy - has compressed air vessel pivoted at centre of curvature of plate and including valve to unbalance forces
IPC: F03G7/10
Filed: 1976-05-31
Abstract: The engine has a container (17) which is attached to a semi-circular rail (21). The rail runs on bearings on a semi-circular plate (20) which is fixed to the engine base. The container can thus pivot about an axis (a-a) through the centre of curvature of the plate. The container has a valve (19) at one edge and is filled with compressed air. The valve is shut and the forces of the air on the walls of the container are in equilibrium. When the valve is opened one of the forces is eliminated and the remaining forces then have a resultant which causes the container to rotate about its axis.
Patent FR-2353445-A1 (FR)
Title: End piece for metal food cans - has series of undulations, and flat central zone to resist large internal pressures during sterilisation
IPC: B65D8/12
Filed: 1976-06-03
Abstract: The end piece, intended mainly for sealing metal cans which contain preserved food is designed to resist a large internal pressure, such as occurs when the cans are sterilised, so that at all times after sterilisation the metal of the lid is in an elastic state and not in a plastic state. The circular end piece has a fixing edge (1) with a vertical wall (2), a projecting flexible rim (4) inclined at, at least 30 deg. to the horizontal, a series of undulations (7) and a flat or slightly curved central zone (6). The radius between the wall and the rim is about 1 mm, the radius of the rim is twice this and the undulations are confined between two envelopes spaced apart at a distance (d) equal to size times the thickness (e) of the metal.
Patent FR-2317701-A1 (FR)
Title: Circuit maintaining constant current and voltage - operates independently of temperature using transistors, diodes, resistors and reference element
Inventor: ENGEL KLAUS
IPC: G05F3/22
Filed: 1976-06-25
Abstract: The circuit maintains a constant current and/or voltage independently of temperature conditions where several transistors, diodes and resistors as well as one or more reference elements are installed. One terminal of the working voltage (1, 16) is connected to one of the collectors (4) of a multi-collector transistor (5) via one or several resistors (2) and a transistor (3) switched as a diode in the direction of current flow. The terminal is also connected to the other collector (8) of the multi-collector transistor (5) via at least two diodes (6, 7) terminated in the direction of current flow. The base (9) is connected to the collector (10) of a transistor (11) complementary to the multi-collector transistor (5).
Patent FR-2333824-A1 (FR)
Inventor: UKIHASHI HIROSHI
IPC: C08L27/12
Filed: 1976-08-30
Abstract: 1518387 Membranes for chloralkali cells ASAHI GLASS CO Ltd 24 Aug 1976 [29 Aug 1975(2) 23 Sept 1975] 35210/76 Heading C7B [Also in Division C3] Chloralkali electrolysis is conducted in a cell having a fluorinated membrane formed of a copolymer of a fluorovinyl ether having the formula wherein 1 is 0 to 3; m is 0 to 6; n is 0 to 4 and one of 1 and m is not zero; X, X' and X" are the same or different and represent -F or -CF 3 ; A represents -CN, -COF, -COOH, COOR 1 , -COOM or -CONR 2  R 3 ; R 1  represents C 1  to C 10  -alkyl; R 2  and R 3  represent -H or C 1  to C 10  -alkyl and M represents an alkali metal or a quaternary ammonium group and a fluorinated olefin, or a hydrolyzed copolymer thereof. Other fluorovinyl ethers, e.g. perfluoro methyl or perfluoropropyl vinyl ether, fluoroketones, fluoronitroso compounds and fluorothio carbonyl compounds may also be used in the production of the copolymer.
Patent FR-2365256-A1 (FR)
Title: Colour television chrominance keying technique - enables individual colour component intensity level to control substitution of video signals to produce composite video output
Inventor: MACHEBOEUF GUY
IPC: H04N9/75
Filed: 1976-09-17
Abstract: A chrominance keying system is used for inserting one video signal (P) into another signal (D) uses the overall colour intensity of the combined red green and blue components of the signal (P) to control a switch (6) which performs the keying operation. The composite video signal (P) is applied to signal combines (3) where it is broken down into colour components (CR, CV, CB) which are applied to "OR" gate (4). Binary signals (C) emanating from the logic circuit (4) are applied to a dipping circuit (5) the output of which operate to actuate switch (6) as and when colour components of (P) exceed in predetermined intensity threshold. Actuation of switch (6) causes selection in each relevant line period of the substitution video signal for applications to the output path.
Patent FR-2367155-A1 (FR)
Title: Triangular wooden roof frame - is completely prefabricated and folds at apex for transport to site
IPC: E04B1/344
Filed: 1976-10-05
Abstract: The wooden roof frame, for individual or collective housing, can be prefabricated completely in a workshop allowing easy tr transport and erection on site. The frame consists of a triangulated truss which is higned at the ridge (a), at the sides (b) and at the ends (c, d) of the struts (9) so that it can be folded up for easy transport. The ridge gusset plate is stiffened to avoid transverse distortion of the frame during handling. Once on site the frame is unfolded and the joints are secured by bolts fitted into previously drilled holes.
Patent FR-2368239-A1 (FR)
Title: Procede de fabrication d'un chausson et chausson permettant de mettre en oeuvre le procede
IPC: A43B5/04
Filed: 1976-10-21
Abstract: La présente invention concerne un article chaussant destiné à être introduit notamment dans une chaussure de ski et son procédé de fabrication.  Le procédé selon l'invention se caractérise par le fait que l'article chaussant est moulé ouvert en position de chaussage-déchaussage.  Il présente l'avantage de permettre un démoulage commode du noyau intérieur du moule.
Patent FR-2336588-A1 (FR)
Title: Watch bearing shock absorber spring - is ring shaped and has locking and tensioning arms locating in recesses
IPC: G04B31/04
Filed: 1976-11-16
Abstract: A shock absorbing spring (2) for a watch bearing, is basically ring shaped, to fit into the circular recess in the bearing carrier ring (1). It has arms (8) extending inwards for locating purposes with extensions (9) sloping downwards at the outer periphery which fit into a groove (6) around the inside of the carrier ring. These form a camming device, each extension contacting the face of the groove so that after the ring has been inserted, it is rotated until a required preloading is applied to the spring (2). The top surface of the bearing ring has cut-outs (6, 7) so that the spring can be inserted correctly in the middle, after which it is turned.
Patent FR-2357817-A1 (FR)
Title: Echangeur de chaleur tubulaire equipe de tubes chauffants cintres en forme de u
IPC: G21D5/08
Filed: 1976-12-22
Abstract: Pour la production de la vapeur dans des réacteurs à eau pressurisée, on réalise le générateur de vapeur chauffé par l'eau pressurisée sous la forme d'un échangeur de chaleur comportant des collecteurs 2, 3 superposés. Les tubes de liaison 6 entre les collecteurs sont cintrés en forme de U au-dessus du niveau d'eau 9 et dans la partie inférieure du collecteur.
Patent FR-2340676-A1 (FR)
Title: Rotor driven seed distributor - has circular seed chamber with holes in side, and has pivot axle which can be adjusted for angle of tilt
IPC: A01C7/04
Filed: 1977-02-11
Abstract: The seed distributor has a seed rotor (11), driven by a mechanism, and a housing (12). The rotor (11) forms a seed chamber with circular wall in which are a number of seed holes (22). The housing (12) encloses a housing wall (15) which is stationary when the rotor (11) rotates on its pivot axle (21). The housing (22) contains a control inside the rotor (11), which is positioned a little apart in one direction from an outlet. The control has a rotational section and a drive mechanism for it. The control is in the form of a brush. Each seed opening (22) in the circular wall (14) of the seed rotor (11) allows through only one seed at a time. The housing (12) has an inlet leading into the seed chamber (18).
Patent FR-2381825-A1 (FR)
Title: Microbial food prepd. by culturing Methylomonas probus - in medium contg. methanol as carbon source
IPC: C12N1/32
Filed: 1977-02-25
Abstract: Microbial body applicable as food and feed can be obtd. economically by culturing novel bacteria in the culture medium contg. methanol as carbon source. The method is characterised by culturing novel bacterium Methylomonas probus in the culture medium contg. methanol as the major carbon source and inorganic nitrients and sepg. and collecting multiplied bacterial body. The bacterium can be multiplied rapidly and can keep rapid velocity even in the medium having methanol concn. as high as 4%. Obtained bacterial body contains crude protein 80%.
Patent FR-2357529-A1 (FR)
Title: Nouveaux sels d'addition d'acides du d - (+) - 1 - (3-hydroxyphenyl) - 2 - aminopropane, utiles notamment comme sympathomimetiques, et leur procede de preparation
IPC: A61K31/14
Filed: 1977-04-07
Abstract: L'invention concerne de nouvelles formes du D(+)-1-(3-hydroxyphényl)-2-aminorpopane qui consistent en sels d'addition d'acides physiologiquement acceptable, notamment le bitartrate. On peut administrer les composés comme antihypotoniques et sympathomimétiques en tablettes, capsules, dragees, sirops, solutions, suspensions et gouttes et suppositoires, la dose unitaire étant de 30 à 50 mg pour l'administration intraveineuse et de 10 à 120 mg pour l'administration orale.
Patent FR-2394545-A1 (FR)
Title: Procede de fabrication de quininone et de quinidinone, intermediaires de synthese de la quinidine
IPC: C07D453/04
Filed: 1977-06-15
Abstract: La présente invention concerne une oxydation de type Oppenhauer par un réactif dénommé Kétyl. Le Kétyl est obtenu par l'action directe d'un métal sur la cétone accepteur de la réaction classique d'Oppenhauer. La cétone en question est plus particulièrement une benzophénone ou une fluorénone. L'invention peut être appliquée à l'oxydation des alcaloïdes du quinquina et permet de transformer par exemple la quinine en quininone et quinidinone.
Patent FR-2394881-A1 (FR)
Title: Miniature motor controlled mercury wetted switch - has movement perpendicular to surfaces of contact which contains concavities to accept mercury
Inventor: NICOLAS MICHEL
IPC: H01H59/00
Filed: 1977-06-17
Abstract: The motor controlled switch includes contacts which are wetted by a conducting liq., normally mercury. The motor is a miniaturised type the switch design allowing the contact to be broken with the low force exerted by such motors. This is achieved by moving the 'wiper' contacts sideways rather than vertically. Two or more fixed contacts can be held in a variety of configurations (21, 22) including having pairs facing each other with a strip (26) driven from the motor (13) moving between them. A hole (27) in the strip allows mercury to connect the two contacts electrically.
Patent FR-2355564-A1 (FR)
Title: Procede de preparation d'un catalyseur a base d'un metal du groupe du platine et de germanium et application du catalyseur obtenu a la reformation des hydrocarbures
IPC: B01J23/62
Filed: 1977-06-24
Abstract: L'invention a pour objet un procédé de préparation d'un catalyseur suivant lequel on prépare une solution non-aqueuse commune d'un composé soluble d'un métal du groupe du platine et d'un germane halo-substitué contenant moins de quatre substituants halogénés, on imprègne un support poreux ayant une surface spécifique élevée à l'aide de la solution, et on seche et calcine le support imprégné.
Patent FR-2356897-A1 (FR)
Title: Dispositif d'isolation phonique d'un tube de chauffage par rayonnement pour un four industriel
IPC: F23C3/00
Filed: 1977-07-01
Abstract: L'invention concerne les fours industriels. Un dispositif d'isolation phonique d'un tube de chauffage par rayonnement est caractérisé par le fait qu'une double enveloppe 5 comprend une chemise externe 6, une chemise interne 7, un espace circulaire 8 situé entre la chemise interne 6 et la chemise externe 7, ainsi qu'un espace central 9 à l'intérieur de la chemise interne 7, et qu'un des espaces est conçu comme un réchauffeur d'air comburant à récupération et que l'autre est conçu comme un isolant phonique ainsi qu'un é1ément conducteur de chaleur pour les chicanes d'isolation phonique 10. Application à l'isolation phonique d'installation à capacité de chauffage élevée.
Patent FR-2357478-A1 (FR)
Title: Tanker wagon filled with radioactive liquid by suction - with vacuum line and feed line valves interlocked to prevent overfilling
IPC: F04F3/00
Filed: 1977-07-06
Abstract: Method of filling a vessel, esp. a tanker wagon for radioactive liqs. utilises vacuum for drawing the liqs. into the vessel and probes or detectors for measuring the max. level in the vessel. The successive batches of different contaminated or radioactive liqs. are introduced into the vessel, the individual level at each batch being regulated by the value of the vacuum in the vessel, until the final max. level of liq. is attained. Pref., there are two limiting values of the vacuum; when the higher limiting value, i.e., the lower pressure, is reached the vacuum pump line is closed and the liq. suction line is opened; liq. is then drawn in by the vacuum until the second, lower limiting value, i.e. a higher press. is reached, when the vacuum pump line is opened and the liq. suction line is again closed. Used for liqs. of medium to high radioactivity, esp. in the range 10-1-10-3 Ci/m3. The method ensures that the tank cannot be overfilled, since the vacuum pump line and the liq. suction line into the tank can never be open simultaneously i.e. as the vessel is progressively filled the time between the opening of the liq. filler line and its automatic closure as a result of the second limiting value being reached becomes progressively shorter until finally a minimum is reached.
Patent FR-2362957-A1 (FR)
Title: Projectile a pince d'insertion des fils de trame dans une machine a tisser
IPC: D03J5/06
Filed: 1977-08-23
Abstract: Projectile comprenant une enveloppe formée d'un manchon à deux côtés larges et deux côtés étroits et d'un pince-fil à deux branches élastiques orientées vers l'extrémité arrière ouverte de l'enveloppe. L'enveloppe se compose d'une partie interne métallique porteuse 1 et d'un manchon de matière plastique 2 qui entoure cette partie interne et en forme un appui mutuel des deux côtés larges, ce manchon formant extérieurement des surfaces de glissement 20, 21 destinées à coopérer lors de l'insertion de la trame avec des mamelons de guidage d'une trajectoire du projectile et avec les mâchoires d'un frein du mécanisme récepteur de la machine à tisser. Application générale aux machines à tisser à projectiles.
Patent FR-2402374-A1 (FR)
Title: Dispositif de montage d'un microphone incorpore dans un appareil d'enregistrement sonore et appareil a microphone incorpore
Inventor: RIBEYRE RENE
IPC: H04R1/08
Filed: 1977-08-30
Abstract: Dispositif de montage d'un microphone incorporé dans un appareil d'enregistrement sonore comportant des pièces en mouvement pour l'entraînement du support d'information. Il comprend, inséré entre le corps du microphone et le coffret de présentation de l'appareil, une pièce intermédiaire en un matériau inerte et inélastique, tel que le plomb. L'invention est applicable aux magnétophones, dictaphones et combinés << radio-cassette >>, portatifs ou transportables.
Patent FR-2368131-A1 (FR)
Title: Particules
IPC: C22C33/02
Filed: 1977-10-14
Abstract: L'invention concerne des particules métalliques aciculaires, ferromagnétiques constituées essentiellement par du fer. Selon l'invention, la surface de ces particules contient 0,02 à 0,2 % en poids de fer et du phosphore sous forme de phosphate dans une proportion pondérale de 0,5 à 1,9 %, rapportée au poids des particules métalliques. Application des particules métalliques à la fabrication de supports d'enregistrement magnétiques.
Patent FR-2406644-A1 (FR)
Title: Foamed copolymer of styrene and unsaturated anhydride - contains halogen and is crosslinked
Inventor: CORBETT JOHN MARVIN
IPC: C08F8/18
Filed: 1977-10-24
Abstract: A foam comprises a halogen-contg. copolymer of a monovinylidene aromatic monomer and at least 1 milliequiv. per gram of an ethylenically unsatd. carboxylic anhydride. The copolymer is crosslinked by a polyfunctional cpd. through the anhydride moiety to a degree sufficient to render it non-melting upon exposure to flame. The halogen in the copolymer reduces its flammability without affecting its physical properties, and the crosslinking renders the foam non-melting. It is used in construction and furniture to replace styrene polymer foams.