baber/WOPTO huggingface dataset:
Patent FR-2224933-A1 (FR)
Title: Receiver chrominance signal demodulation stage - uses bridge cct. to avoid supplementary balancing
IPC: H03K5/003
Filed: 1974-03-27
Abstract: Bridge circuit is for d.c. coupling of a demodulating stage to a d.c. voltage amplifier having a relatively low input resistance and requiring a relatively high input current, the amplifier being formed from bipolar transistors or an integrated circuit. The first two branches of the bridge have low value ohmic resistors (2), (3) connected to a voltage source at their junction. The second two branches of the bridge include a series resistance (4), which determines the amplifiers input current, and the amplifier input resistance (5), also connected to a voltage source at their junction. The demodulator (8) offering no path to d.c. current is mounted across the bridge and is balanced at zero voltage since the non a.c. reference point of the demodulator is connected to the junction of the resistors in the first two branches (2), (3), the high frequency signal being blocked at this point by a low capacity condenser, and also because the output of the demodulator is connected to the junction of the resistors in the second two branches. The chrominance signal demodulation stage is SECAM receivers has a definite load which in certain circumstances makes it unnecessary to provide supplementary balancing of disaccentuation circuits.
Patent FR-2279179-A1 (FR)
Title: Teaching clock for telling time in several languages - has face having three axial openings with two being selectively masked
IPC: G09B19/12
Filed: 1974-05-07
Abstract: The clock allows the time to be read off in a desired language, for each minute of the hour, and has a face which is provided with three axial openings of which two located either side of the rotational axis, are alternatively masked, and through which the time can be read given in numbers and in the selected language. The latter numbers and inscriptions for telling the time are inscribed on discs positioned below the clock face, and rotating with the clock hands (4, 5) so that the time indicated by the inscription read through one of the openings varies minute by minute. Two discs are used, the first being transparent and carrying the inscriptions for the time in minutes and the second being opaque.
Patent FR-2284142-A1 (FR)
Title: Material for forming designs and mark ups - has non-actinic grid on paper sheet on cardboard sheet
IPC: G03F1/90
Filed: 1974-09-05
Abstract: The material is for the execution of designs and sketches for the production of models designed to be reproduced photographically and is especially for the production of printing slides. The material comprises a cardboard sheet, one of the faces of which has a sheet of art paper. The sheet of art paper has a non-actinic grid and has a fine line for each millimeter marking and a heavy line for each five millimeter marking. Reference marks are positioned at the edges of the sheet.
Patent FR-2244234-A1 (FR)
Title: Small, porous, metal plug gas vent for fuel or control rods - in sodium-cooled fast breeder reactors
IPC: G21C3/04
Filed: 1974-09-13
Abstract: Gas venting device in control or fuel rods used in sodium-cooled, fast breeder reactores, is in the form of a small porous plug, which consists of >=2 continuous metal phases, one of which is sol., and the other insol, in sodium under reactor operational conditions, so that the first metallic phase is selectively dissolved out by the sodium metal alloy used is esp. a hard silver-solder alloy. Device enables the advantages of release of gas produced by the irradiation of the fuel or control materials, e.g. reduction in core vol. for a given power output, to be obtd. in a simple and effective manner.
Patent FR-2297341-A1 (FR)
Title: Retention band for medical uses - has tapered triangular section curved end hooks extending towards opposite ends
IPC: A61F15/00
Filed: 1975-01-13
Abstract: A plastics cover or retention band, primarily intended for medical applications for retaining dressings and belts in position, has a central perforated section with its ends connected to two transverse rigid members (1). The cover is retained in position by integral hooks (5) projecting from these members and angled inwardly towards the opposite ends of the band at an angle of 45 deg. approximately. The tapered triangular section hooks may be moulded with longitudinal and transverse flanges to ensure their rigidity when under load. In use, the hooks penetrate the material without damage and when the band is under tension the inward angling of the hooks ensures that the tension is maintained and the band does not become detached inadvertently.
Patent FR-2299956-A1 (FR)
Title: Large bore tee fittings mfr. for pressure pipe - by shaping and welding prefabricated tubes
IPC: B29C49/00
Filed: 1975-02-06
Abstract: Pipe tee fittings are made by prefabricating a straight tube of thermoplastic material and then reshaping the tube by heat and internal press. while the tube is enclosed in a split mould having annular internal recesses for locating press. seals and for forming socket end profiles on the tube and with a side chamber for converting one part of the wall surface to a radially protruding hollow stump. A subsidiary tube and socket end is also prefabricated and then welded or solvent bonded to the decapitated stump to produce te side branch of the tee. Used for making bore press. pipe fittings from e.g. PVC, polyethylene. More suitable than injection moulding of integrally branched fittings if thick walls are required, requiring lower melt viscosities and resulting in less internal stress and brittleness.
Patent FR-2308167-A1 (FR)
Title: Heat-generating nuclear reactor - with liq. neutron absorbent controlled by pressure via prim. and sec. fluid accumulators
Inventor: CHAIX JEAN EDMOND
IPC: G21D9/00
Filed: 1975-04-18
Abstract: The reactor has a pressure vessel contg. a core cooled by a prim. fluid circulating in the vessel by natural convection and a heat exchanger for transfer of heat from the prim. to a sec. fluid. The reactor is modified so that the core contains a structure having interconnected vertical passages connected at their lower ends to a partly filled reservoir of a liq. neutron absorbent. This reservoir is located outside the pressure vessel, above the core and is associated with a device capable of modifying the gas pressure existing above the absorbent in the reservoir. The upper ends of the vertical passages in the core structure are connected to the top of the membrane accumulator also located outside the pressure vessel and above the core. These accumulators are supplied with prim. and sec. fluid respectively, the gas atmospheres in each being capable of connection to the gas atmos. in the absorbent reservoir. The reactor offers a high degree of safety, the reactor being stopped simply by connecting the gas atmospheres above the prim. and sec. fluid accumulators and the absorbent reservoir.
Patent FR-2308458-A1 (FR)
Title: Clad steel slabs welded together on their periphery - in large scale plant, prior to rolling into clad sheet
Inventor: HUMBLOT CLAUDE
IPC: B23K37/047
Filed: 1975-04-24
Abstract: Plant for producing composite metal slabs for rolling into clad sheet, e.g. mild steel clad with stainless steel, includes two pivot tables which swing two identical slabs into a vertical position so that the noble cladding is in contact. A mobile portal is fitted with clamps holding the vertical sandwich while it travels to a welding station fitted with devices which press the slabs together during the peripheral welding of the slabs. Each welding station is fitted with a turntable for moving the sandwich through 90 degrees so that it is aligned with the welding appts. After rolling into sheet, the peripheral weld is removed.
Patent FR-2268642-A1 (FR)
Title: Printing press inking system - uses flexible knife set in relation to surface to be inked
IPC: B41M1/00
Filed: 1975-04-24
Abstract: The system inks a surface to a desired thickness, and uses a flexible ink knife with an edge dividing the ink, set in relation to the forward end of the surface so as to form a contact area roughly of the dimension of the ink film to be formed. The knife is so supported that the angle between the forward edge, and it is greater than 90 and less than 180 deg. The ink is delivered to the knife so as to flow onto it and the surface and form a layer thicker than that desired. Realtive movement is generated between surface and knife at a speed set to produce an alternating effect, in conjunction with the ink viscosity, the knife shape and the downwards acting force. This results in the ink in the contact area being supported by the movement, so that the viscous resistance against the knife forces generate a pressure forcing the knife onto the ink film produced by it. The film is thus produced at the correct thickness.
Patent FR-2275427-A1 (FR)
Title: High temp. methanisation of gas mixts. - using nickel, cobalt or iron with metal oxides as catalysts
IPC: B01J23/74
Filed: 1975-06-02
Abstract: Methanisation of gas mixts. contg. mainly CO, CO2 and H2 with outlet temps. of at least 500 degrees C using as catalyst the prod. of thermal decompsn. and redn. of a complex cpd. of (A) an oxide of Ni and/or co and/or Fe, (B) opt. one or more difficulty reducible oxides of bivalent metals, (C) at least one oxide of a trivalent metal and (D) hydroxyl ions, divalent anions and water. Used as one stage in a process for making substitutes for natural gas from gas mixts. made by reaction of carbonaceous materials with steam and/or oxygen. The high temps. reaction allows the process to operate as a simple adiabatic reaction without internal cooling coils, quenching equipment or diluent gas. the outlet temp. is high enough to produce high pressure steam at up to 280 atmos. which can be used in turbines to drive gas compressors etc.
Patent FR-2326046-A1 (FR)
Title: Cable connector for battery conical terminal - has slotted cup to fit over conical terminal and nut to hold cable
IPC: H01R11/28
Filed: 1975-09-23
Abstract: A connector is used to connect a cable to the conical terminal of a battery. It provides an easy method of connection for a car battery. The connector has a slip cup which fits over the battery terminal. It has a metal nut and a conical thread to clamp the cup. It also has a second nut of plastics material to clamp the end of the cable to the connector cup. The second nut has two hexagonal profiles. The cup of the connector is made of cold forged copper.
Patent FR-2302766-A1 (FR)
IPC: B01D47/02
Filed: 1976-03-04
Abstract: A gravitational separator for separating solids from liquefied natural gas having a closed tank having a conical lower portion angled at least 60 DEG  from the horizontal and terminating at the bottom in an apex opening in communication with a valve means for removing settled solids from the tank, a vertically positioned cylindrical shell, defining a stilling chamber, located at least partially below a predetermined level of liquified gas, a conical shell vapor disengaging means located above the stilling chamber, conduit means for feeding a gas or liquefied gas containing impurities terminating in the stilling chamber below the level of a liquefied gas in the tank, means for withdrawing a gas or vapor from the tank.
Patent FR-2354198-A1 (FR)
Title: Lithograph copying using offset printing press - uses support surface over light source to obtain set of coloured copies
IPC: G03F3/00
Filed: 1976-06-09
Abstract: A method of reproducing lithographic works of art on a conventional offset printing machine, to produce small quantities which are numbered, or mass produced, uses a frosted transparent or woven support carrying a coloured copy of the original which is mounted over a light source. This permits a direct comparison with the original, with laboratory testing or printed proofs. The film is made up of a set of four layers, each with a different colour, which replaces the original lithographic store. A different coloured copy is made on each layer using lithographic crayons, and obtaining a copy on the paper used for the offset printing process.
Patent FR-2356257-A1 (FR)
Title: Gas pressure actuated switch - has pre-pressurising dash pot with down stream gas release valve mounted on mobile contact
IPC: H01H33/91
Filed: 1976-06-25
Abstract: An electrical switch operating under the action of pressurized gas comprises a static contact (20) and a sliding contact element (30). The sliding element is cylindrical and hollow, defining a passage for the escape of actuating gas. A piston and sleeve assembly (24) (26) is integral with the mobile contact and coaxial with it. Upon actuation of the switch the piston performs a pre-pressurization of the actuating gas. The base of the sliding contact is provided with an escape valve (38) having a bias (40) requiring gas pressure in excess of a threshold value to open the gas escape parts (36).
Patent FR-2357225-A1 (FR)
Title: Child growth measuring appts. - uses rise of head to move parallel ray of light and provides angle amplification of ray
IPC: G01B11/02
Filed: 1976-07-05
Abstract: The child growth measuring appts. determines in a few minutes the rate of growth of the child. As its head rises, it moves a parallel ray of light (9). The head can be arranged to mask a divergent ray. Ultra-violet rays can be used, produced if necessary by laser, or X-rays. Angle amplification of the ray can be effected in a black box under vacuum, with two opposite and strictly parallel walls of material reflecting ultra-violet or X-rays. This allows extension of the ray as many times as the period of exposure of the child on the table (1) requires.
Patent FR-2318049-A1 (FR)
Title: Heavy goods vehicle IC engine - has encased twin fans in parallel for noise attenuation purposes
IPC: B60K11/00
Filed: 1976-07-16
Abstract: Noise-reduction arrangement for IC engines in which the conventional engine cooling fan is replaced by one or (pref.) two encased (16, 17) centrifugal or axial-radial fans (11, 12) operating in parallel. Inlet ducts (14, 15) connect these fans to the radiator (9) and have outlet ducts (16a, 17a) leading into a noise-absorbing casing (13) surrounding the engine and (pref.) gearbox. There are additional cooling air outlets for the brakes (17b) and for airflow to improve the aerodynamic characteristics of the vehicle (17c). In addition to the effect of the engine casing (13), noise reduction also results from the greater efficiency of the encased fans, compared with conventional ones.
Patent FR-2363878-A1 (FR)
Title: Electromagnetically operated circuit breaker - has single magnet driving pole pistons moving bridge contacts in arc extinguishing chambers
IPC: H01H9/40
Filed: 1976-09-03
Abstract: The circuit breaker has each of its poles provided with a chamber containing parallel arc-extinguishing plates. The chamber has a central U-shaped guide for the arc. Each moving contact consists of a spring-loaded piston with a contact bridge at its end. The bridge joins the two fixed contacts. The piston is driven axially by an electromagnet on the other side of the fixed contacts and has an extension in the arc-extinguishing chamber. All the pistons are driven by the same electromagnet.
Patent FR-2322734-A1 (FR)
Title: Reinforced cotton web laminate - with one face of cotton web coated with uniform layer of adhesively bonded fibres, to make collars and cuffs (NL100377)
Inventor: BOER-WITLOX ANTONIA MARIA MARG
IPC: A41D27/06
Filed: 1976-09-08
Abstract: Laminated textile web is produced from a woven fabric, one side of which serves as a carrier for a layer of uniformly distributed fibres which are bonded to the fabric. The webs are used for making clothing, collars or cuffs requiring folding about 180 degrees. It is dimensionally reinforced and pleats produced do not lead to differential layer movements resulting in rucking. Pref. the woven fabric is a cotton web and the fibres are bonded to the weft and warp yarns at their points of intersection using an adhesive. Spot welding may also be used. Fibre coated side of web may be imparted with a surface finish.
Patent FR-2380003-A1 (FR)
Title: Easy assembly shelving system - has front and back uprights with slots along height for shelf position setting
IPC: A47B57/06
Filed: 1977-02-15
Abstract: The shelving system consists of front uprights (10) and back uprights (11) joined by rigid rods (12), the whole being completely open for the easy insertion of the shelves (15). The corners of the shelves are shaped to correspond with the front (10) and back (11) uprights. Storage at several levels is possible because of the perforations all along the front uprights and the openings all along the length of the back uprights for the adjustments of shelves as required.
Patent FR-2387149-A1 (FR)
Title: Suspended railway guide rail - has upper and lower running faces and cavities for equipment such as cables, switches etc.
IPC: B61C13/04
Filed: 1977-04-15
Abstract: The suspended railway system has guide rail with webs connecting upper and lower running faces. The suspension arrangement incorporates also a drive with centring and guide profile. Power is picked up by brushes from conductors. This transporter carries heavy loads. The upper (13) and lower (14) running faces have each on both sides of the vertical axis (15) a vertical flank (16, 17, 18, 19) arranged parallel to the web (12). The guide rail (11) has features for accommodating different components such as cables, hoses, stops and limit switches. These components are arranged into longitudinal cavities (20, 21) bounded by central vertical web (12) and by two vertical flanks situated in the same vertical planes.
Patent FR-2354243-A1 (FR)
Title: Source d'alimentation electrique a partir d'energie rayonnante pour avions et missiles
IPC: H01L31/04
Filed: 1977-06-02
Abstract: Source d'alimentation électrique à partir d'énergie rayonnante Elle comprend des photopiles 114 montées prés de la chambre de combustion d'un réacteur ou près de l'extrémité postérieure d'un missile de manière à recevoir une partie de l'énergie rayonnée par les gaz en combustion émis par l'avion ou le missile afin de la convertir en énergie électrique utilisable sur place. Application aux avions à réaction, missiles ou véhicules à turbine à gaz
Patent FR-2396924-A1 (FR)
Title: Liquid or gaseous fuel burner - has revolving body driven by gear train and blades to cause gas swirling
IPC: F23D11/08
Filed: 1977-07-08
Abstract: The burner is surrounded by a refractory cylinder which houses the burner assembly (2). The burner has rotating element (3) which turns about the vertical spindle (4) through the bevel gears (8, 9) and the drive shaft (7). Fuel is supplied through the duct (10). Gaseous fuel is supplied from the duct (11). The gas passes the blades (13) in the burner and causes the fuel to swirl inside the combustion chamber. Various fuels are supplied through pumps.
Patent FR-2397790-A1 (FR)
Title: Line hauling apparatus for tunny fishing - has pulley driven by variable speed hydraulic motor to haul line over mast mounted snatch block
IPC: A01K73/06
Filed: 1977-07-19
Abstract: Sea fishing line hauling apparatus has a base secured to the bridge of a boat. A haulage pulley is rotated by a variable speed hydraulic motor. The line is reeved around the pulley after passing successively over a snatch block carried by a mast and a guide roller. The pulley is connected to the motor through a dog clutch. The mast is free to swivel, at least in the vertical plane. The pulley can be locked by a ratchet mechanism.
Patent FR-2381783-A1 (FR)
Title: Procede de production de lysozyme humaine
Inventor: TAKECHI KAZUO
IPC: A61K38/00
Filed: 1977-07-27
Abstract: Procédé de production d'une préparation de lysozyme humaine. Le procédé consiste à fractionner un sang humain par différence de solubilité en vue d'isoler une fraction albumine, à mettre en contact la fraction albumine avec un échangeur cationique faiblement acide pour adsorber la lysozyme contenue dans la fraction albumine et à désorber la lysozyme adsorbée. Utilisation sous forme d'injection intra-veineuse, intra-artérielle ou intra-musculaire.
Patent FR-2402099-A1 (FR)
Title: Element filete a dents de blocage
IPC: F16B39/282
Filed: 1977-09-01
Abstract: L'invention est relative à un élément fileté à dents de blocage. Selon l'invention, la surface d'appui en forme de couronne dentée nécessaire pour absorber la force axiale de vis présente, aux surfaces latérales postérieures des saillies en dents de scie tournées dans le sens de la rotation de desserrage, une surface de blocage dont la grandeur totale, qui est le produit de la largeur de la couronne dentée par la profondeur des dents et par le nombre de dents, est adaptée, compte tenu de la distance effective à l'axe de l'élément fileté, au couple interne de desserrage proportionnel à la plus grande force de vis possible. L'élément est utilisable en mécanique pour assurer des liaisons indesserrables.
Patent FR-2369765-A1 (FR)
Title: Systeme de reglage automatique du gain des circuits de traitement de signaux de chrominance
IPC: H04N9/68
Filed: 1977-10-25
Abstract: L'invention concerne un système amplificateur de signaux de chrominance à réglage automatique du gain. Des amplificateurs sont prévus pour amplifier des composantes représentatives d'une image. Le premier amplificateur 10 amplifie des composantes de synchronisation de la sous-porteuse de chrominance et son gain est réglé dans une première boucle fermée; les second et troisième amplificateurs 18, 26; 16, 20 sont couplés à la sortie du premier; la sortie du second amplificateur est couplée à un détecteur 66 répondant à des composantes représentatives de l'image dont les amplitudes de crête sont supérieures à un niveau prédéterminé; une sortie de réglage du gain du détecteur 66 est couplée aux second et troisieme amplificateurs pour faire varier leur gain pour empêcher une sursaturation non souhaitée de l'image visualisée; un autre réglage du gain 118, 122, 124 (commandé par le spectateur) est couplé au troisième amplificateur. L'invention s'applique notamment aux téléviseurs couleurs.
Patent FR-2405389-A1 (FR)
Title: Vis auto-perceuse et auto-taraudeuse
IPC: B21H3/02
Filed: 1977-11-10
Abstract: a. Vis auto-perceuse et auto-taraudeuse, pourvue d'une pointe apte à percer une tôle. b. Le long de l'une au moins de ses génératrices, cette pointe 3 comporte une lèvre de coupe 4 à arête vive et de largeur croissante en direction du fût fileté de la vis. Quant à la partie de raccordement entre le fût fileté 2 de cette vis et sa pointe 3, elle présente une zone cylindrique de calibrage du trou pratiqué par celle-ci, cette zone possédant une section identique à celle existant au fond du filet du fût de la vis. Par ailleurs, ce filet est précédé, sur la partie de la lèvre de coupe 4 adjacente à ce fût, d'au moins une dent saillante 10 dont la section correspond à une partie seulement de la section de ce filet c. Cette vis peut être utilisée pour fixer, sur une tôle en acier ou tout autre matériau malléable, un élément quelconque en matière transperçable, par exemple un panneau en bois, en plâtre, etc.
Patent FR-2408048-A1 (FR)
Title: Vehicle propulsion unit - has hollow ring contg. gas which is alternately accelerated by opposed rotors coupled to motor-generator units
IPC: F03G7/00
Filed: 1977-11-07
Abstract: The engine has a hollow ring containing a gas. An impeller driven by a motor outside the ring accelerates the gas in one half of the ring. The gas circulating round the ring drives a second impeller which drives a generator outside the ring. The generator of the second impeller supplies the current to the motor of the first impeller. After a short period the functions of the two impellers and their associated electrical machines are reversed. The alternation of acceleration and deceleration of the gas circulating in the ring produces a unidirectional force on the ring which is transmitted to the vehicle.