baber/WOPTO huggingface dataset:
Patent FR-2276587-A1 (FR)
Title: Instrument for detecting discontinuities in pipe walls - with spaced transformers inducing magnetic field in pipe
Inventor: ABRUKIN ABRAM LVOVICH
IPC: E21B47/09
Filed: 1974-06-26
Abstract: An instrument for detecting discontinuities, e.g. flaws, couplings on perforations in a metallic pipe, e.g. oil well pipe or gas pipe, includes two spaced transformers with magnetic circuits completed by the pipe wall during movement of the instrument along the pipe, the secondary windings of the transformers having different numbers of turns and being oppositely connected in series and coupled to the input of an amplifier circuit, the primary windings of the transformers having identical numbers of turns and being matchingly connected in series and coupled to the output of the amplifier circuit. Due to the difference in the number of turns of the secondary windings and to the matching connection of the windings and the amplifier circuit, there is positive feedback in the amplifier circuit, the amount of positive feedback being defined by the product Kbeta, K being the gain of the amplifier circuit and beta being the resultant transformation ratio of the interconnected transformers, the value of Kbeta being made greater than unity by selecting a suitable value for the ratio of the number of turns of the primary windings and the difference in the number of turns of the secondary windings. Any discontinuity in the pipe wall causes a disturbance of the magnetic symmetry of the transformers' magnetic circuits and a consequent change in the value of beta, resulting in a characteristic change in frequency of the output signal of the amplifier circuit. There is no change in frequency of the output signal due to accidental variation in the distance of the instrument from the pipe wall.
Patent FR-2283542-A1 (FR)
Title: Differential current circuit breaker - has artificial differential current created by micro-switch and resistance for remote control
IPC: H01H83/04
Filed: 1974-08-28
Abstract: The differential interrupter has a multipole contact-breaker and a differential unit. The differential unit is coupled to the breaker such that a difference in current releases a device to open the contacts. The unit has a differential transformer which supplies a relay releasing the contacts. The interrupter also has a device for producing an artificial differential current by closing a microswitch (48) and introducing a shunt resistor (56). This device is connected to the differential unit which can release the breaker. This device can be remotely controlled. The microswitch (48) can also be actuated by fuses (26) with plunger action.
Patent FR-2242407-A1 (FR)
Title: Novel silicon-contg. polymer prodn. - by reacting a cyclic monomer and a rubber with an unsatd. silane in the presence of a catalyst
IPC: C08C19/25
Filed: 1974-09-05
Abstract: Polymers contg. silane gps. in its main chain and/or its side-chains and/or as end-gps. are made by reacting a cyclic monoolefin and/or a polybutadiene, a polypiperylene and/or a butadiene-styrene copolymer in the presence of a reactive olefinically unsatd. silane and a catalyst. The catalyst contains (a) a cpd. of Re, Ta, Mo or W, (b) a Gp. I-IV organometallic cpd. and (c) opt. a cocatalyst opt. in the presence of an inert organic solvent at -60 degrees C to +60 degrees C. The products are rubbers contg. in addn. to C=C unsatn., reactive functionality due to the Si atoms which improves chemical bonding of fillers and improves their adhesion to glass fibres and to metals.
Patent FR-2284513-A1 (FR)
Title: Life saving raft which is self-inflatable - is joined to parent ship by cable and has signal flag
IPC: B63C9/02
Filed: 1974-09-12
Abstract: The life raft is stowed in any convenient place on the ship and, when it is thrown over the side, will inflate automatically from a pressurised air or gas bottle. The raft consists of a number of rings (1) joined in a stack and with the lowest ring being fitted with a base. The raft is fitted on one side with a single mast (4) and flat (5) to increase the visibility of the raft. The raft is joined to the ship permanently by means of a loosely coiled line, which will run out freely while the ship is stopping.
Patent FR-2251919-A1 (FR)
Title: Current source containing accumulator batteries - has individual batteries and sensors corresponding to system contact arrangement
IPC: H01M50/204
Filed: 1974-10-30
Abstract: The power source for electrical equipments such as portable radios, TV, cassette players etc. using several single dry battery cells in series arrangement is replaced by a small number of accumulator batteries preferably only one accumulator battery and a corresponding number of conductive filling pieces. The accumulator batteries as well as the filling pieces match in outer dimensions, shapes and contact arrangement those of the single (dry) battery cells. The individual accumulator batteries may have different number of accumulator cells corresponding to the working voltage of the battery fed electrical equipments. The power source has additional charging equipment with current limiting.
Patent FR-2289140-A1 (FR)
Title: Pouch with rear face loop in lower region - has loop openings passing horiz. belt or vert. strap between corner stitching
IPC: A45F5/02
Filed: 1974-10-31
Abstract: The single or multiple compartment pouch (1) has a rear loop (2) permitting a sliding attachment to a belt or a strap and is for carrying documents or other objects. The pouch adopts a stable position against the body. The loop is a relatively large rectangular piece of fabric stitched (3) to the pouch back in the vicinity of its four corners and is on the lower half of the pouch. A press stud (17a) on the pouch top engages a stud on a strap when the pouch is supported on the strap by passing the strap vertically through the loop. The pouch is supported on a belt by passing the belt horizontally through the loop and folding the pouch over the belt, the stud (17a) then being attached to a stud on the front of the pouch.
Patent FR-2300597-A1 (FR)
Title: Treating silica alumina chromatographic supports - with basic organic cpd. to remove catalytic activity
Inventor: HAGENBACH GERMAIN
IPC: B01J20/10
Filed: 1975-02-14
Abstract: Process for removing the catalytic activity of silica-alumina type chromatographic supports comprises contacting with a basic organic cpd. (I) contg. >=1 N atom, pref. selected from amines, quat. ammonium cpds. and pyridine, quinaldine and orthophenanthroline and their derivs. (I) may be used in the liquid or gaseous phase. The process allows diatomaceous earth supports to be used in gas-liquid chromatography (for purificn. or analysis) of reactive cpds. (e.g. dienes, alpha-ethylenic alcohols, terpenes, terpene derivs.) without catalysing isomerisation, dehydration, polymsn. etc. in the column. (I) are irreversibly chemisorbed on the catalytic sites, and do not affect the chromatographic props. of the support or themselves act as basic catalysts.
Patent FR-2263255-A1 (FR)
Title: High speed mixer for flexible PVC foam materials
IPC: B29B7/74
Filed: 1975-03-05
Abstract: Soft PVC foam materials are produced by feeding the ingredients under a pressure 5 atm. into a self-cleaning, high speed, centre cylinder rotation mixer; applying the heat necessary for gelling and foaming; and allowing the product on extrusion, as required, to expand and cool. The rotor and the stator of the high speed mixer have on their surfaces a pattern of bosses, ribs or similar, and the highest projections of each form a uniform annular slot, the width of which corresponds at most to the height of the bosses or ribs. Enables the correct amount of heat to be applied uniformly without any overheating.
Patent FR-2265093-A1 (FR)
Title: Proportional analyser for nitrate concentration - measures direct current flow as function of time
IPC: G01N27/49
Filed: 1975-03-12
Abstract: By choosing optimum valves for the various parameters such as speed of flow and sampling frequency the current detected can be related linearly with the concentration. The liquid to be measured flows in a section of flexible or rigid tube (1) on which two platinum electrodes (2) are attached parallel to each other and parallel to the flow. The electrodes are attached to the poles of a continuous current source (3) and the current intensity is measured on a microammeter (4), and recorded (5). A digital recorder (6) can also be used when linear correlation exists between the current as a function of time and the concentration.
Patent FR-2306893-A1 (FR)
Title: Closure disc for plastic bag or sachet - assumes concave overcentre shape so slot receiving bag opening holds opening closed or leaves opening open
IPC: B65D33/16
Filed: 1975-04-09
Abstract: The closure disc (1) is made from a rigid material and has a central slot (2), cut across part of the diameter and through the thickness. At each end of the slot is a slit (3), also cut through the thickness but perpendicular to the slot. The width of the slot is less than the combined thicknesses of the walls of the bag or sachet opening which is passed through the slot. The sides of the slot are out of the plane of the disc and extend towards the outlet end of the opening and parallel to the bag walls so that the bag is open, or extend away from the outlet end of the opening so that the bag is closed, the disc having an overcentre action.
Patent FR-2319994-A1 (FR)
Title: Miniature electric motor with casing made of plastics material - has elastic casing locating and holding stator and rotor bearings
IPC: H02K5/167
Filed: 1975-07-31
Abstract: A miniature electric motor is intended to allow simplified assembly and accurate manufacture of the individual motor components. The overall motor casing is made of a suitable synthetic thermoplastics elastic material which locates and holds the stator elements. The inside surfaces of the casing are ribbed providing the location and necessary pressure to maintain the stator which has shallow slots locating with the ribs. Specially shaped portions at the casing ends serves to hold the shaft bearings. Armature brushes are housed within cylinders having an integral flange allowing them to be screwed to the casing wall, access to the screws being provided by a cut-away. The stator is itself cut-away to accept the coil windings, the leads to which enter the enclosure through a moulded enclosure integral with the casing.
Patent FR-2320767-A1 (FR)
Title: Pneumatically cleaning dust from filter sleeves - using pulsed air flow with pulsation sequence controllable for max. effectiveness
Inventor: CARRE CHRISTIAN
IPC: B01D46/04
Filed: 1975-08-11
Abstract: The appts. pneumatically incorporates >=1 shutter mounted in a clearing-aie duct between the clearing-air gas fan and the filter. The shutter and the duct are arranged so that the shutter can turn about an off-centre axis between a closed and an open position under the action of a controller. In the closed position the resultant of the upstream forces tend to open the shutter. In the open position, the shutter presents a profile in the gas stream. The extent of the opening can be regulated by an adjustable stop. The controllers are pneumatic jacks. The duct has a square or rectangular section. There are pref. two shutters symmetrically placed w.r.t. a median plane of the duct. Each has cross-section with a leading edge and a trailing edge in the open position. The pivoting axis is near the leading edge, at the centre of press in the closed position. The appts. gives a pulsed flow which can be controlled to give the most effective sequence of pulsations. It allows the time of opening of the shutter to be reduced so as to give the effect of a press. wave. It occupies no space and causes very small press. drops in the gas flow. It can be regulated to give different openings giving different intensities of the press. wave for different cleaning duties. It is simple to construct and reliable in action.
Patent FR-2287618-A1 (FR)
Title: Torque transmitting articulated shaft - has rigid lengths connected by torque-transmitting bellows of blown plastics
IPC: F16C1/08
Filed: 1975-10-13
Abstract: An articulated shaft has relatively rigid shaft lengths (2) connected by torque-transmitting bellows (5). The entire shaft may be made of resilient material, esp. plastics and may be a single component made by a blowing process. Alternatively only the bellows are blown plastics. The folds (6) of the bellows may be asymmetrical, e.g. of a sawtooth form. Where the bellows are separate from the shafts, the latter may have radial projections which, when the shaft end is pushed into an end of the bellows, enter recesses in the bellows wall to make a torque-transmitting connection.
Patent FR-2297025-A1 (FR)
Title: Clothes hanger made of plastics and/or metal - comprises a garment supporting portion and a hook
IPC: A47G25/62
Filed: 1975-10-14
Abstract: A clothes hanger has a garment-supporting body and a hook attached to it. The supporting body has a central portion which may be yieldingly bent, coplanar with the hook, into a shape that carries the garment. This shape is curved in direction of the hook, end sections being provided whose surfaces are in contact with the garment and prevent its slipping off the hanger. Pref. the non-slip surfaces are of plasticised PVC. The claimed article is suitable for both domestic and commercial use, e.g. in fashion shops, department stores etc. Being adjustable it may be used for garments of a large range of sizes. It is of simple construction and inexpensive to make.
Patent FR-2341233-A1 (FR)
Title: Electronic calculator with summing memory - has temporary or permanent initialisation controllable from external source
IPC: H03K21/00
Filed: 1976-02-12
Abstract: Electronic calculator or computer able to handle any physical quantities which can be presented in numerical form. The calculators operation is dependant on the accumulation of input signal data, a summing memory and intermediate division circuit delivering output data trains and fixed constants to the read out display. A controllable constant is generated and fed into the calculation stage from an external keyboard or from a programme automatically providing the data sequence. The calculator includes an initialising unit which may be temporary or permanent providing the reset to zero function and determining, as required, the value of the constant providing overall flexibility of operation and use.
Patent FR-2341868-A1 (FR)
Title: HF electric loss measurement - using resonant LC circuit with sample placed between capacitor plates and predetermined pressures applied by metallic bellows
Inventor: DECKER DANIEL DE
IPC: G01R27/26
Filed: 1976-02-20
Abstract: Dielectric loss of material is measured at high frequency to determine suitability for use in telecommunications cables. Measurements are performed on sample discs of material placed between electrodes to form a capacitor. A sample of dielectric material (M) is placed between fixed (cP2) and mobile (cP1) electrodes to form a capacitor. Metallic bellows (5) enable a predetermined pressure to be exerted or the sample. The capacitor is connected in parallel with an inductor (L) to which a sinusoidal voltage (6) is applied via a coil (B). A voltmeter (U) determines maximum voltage reading as an auxiliary capacitor (CA) is adjusted for resonance with and without the sample enabling determination of dielectric loss.
Patent FR-2304458-A1 (FR)
Title: Assembling plastic coated metal parts - by introducing the same plastic between them and heating to fuse the parts together
IPC: B29C65/48
Filed: 1976-03-19
Abstract: Metal parts egg. tubes covered with a thermoplastic coating are joined together by introducing between them in the junction zone a quantity of the same thermoplastic to act as a joining agent. The parts are then heated so that the joining agent and the coatings fuse together in the junction zone. Plastic coated metal tubes are easily and firmly secured together with a waterproof joint. The joining agent may be introduced between the parts as a powder, and the parts may have a roughened or grooved surface in the junction region.
Patent FR-2347908-A1 (FR)
Title: Hinging retractable shelf support bracket - has locking mechanism preventing accidental retraction with sliding stay pin held by notched lever
IPC: A47B5/04
Filed: 1976-04-12
Abstract: The pivoting cantilever bracket arm (2) may be supported by a diagonal stay (5). The stay extends between pin joints on a wall plate and the cantilever arm, and the latter pin (4) slides in a linear slot (3) in the cantilever arm (2) to obtain bracket retraction. The locking mechanism comprises a handled (10) lever (6) with an intermediary fulcrum (7). The lever tip is notched (9) to engage the bracket to stay pin (4) and prevent it sliding in the bracket slot (3). Alternatively the cantilever arm (2) may be supported by two pins which locate in 'V' shaped guidage slots.
Patent FR-2366946-A1 (FR)
Title: Attachment for joining trailer to tractor - has male and female parts which ensure connection of brake fluid and lighting circuits automatically
IPC: B60T17/04
Filed: 1976-04-30
Abstract: The attachment for connecting a trailer to a tractor ensures that neither the trailer lights or brakes are left unconnected by mistake. It consists of male and female parts which when fitted together seat on a coned face. There are channels for brake fluid, under pressure. The end of one channel has a sleeve to fit into the female part in connection with a sealing ring and a flat disc. The channels also carry conductors and terminals at their ends. The male part has a circular recess which is used to secure it in place by a sear which can be locked.
Patent FR-2310580-A1 (FR)
Title: Cavity resonator coupling of laser radiation source to optical fibre - has cavity resonator with face aperture as part of laser cavity resonator (NL111176)
IPC: H01S5/022
Filed: 1976-05-07
Abstract: The coupling device is intended especially for a semiconductor laser and uses a cavity resonator for connection to optical fibres. At the location of the fibre faces the cavity resonator has an aperture. The coupling cavity resonator forms a part of the laser resonator proper. The optimum transmission of laser energy by optical fibres is attained when the connecting line between the two apertures runs across the respective side walls of the cavity resonators. With the small dimensions of all components parts, this requirement is conventionally very difficult to meet. The coupling design obviates these difficulties.
Patent FR-2312250-A1 (FR)
Title: Antiaging amino alkyl p-amino benzoates nicotinic acid salts - prepd. by reacting esters with nicotinic acid
IPC: C07C229/60
Filed: 1976-05-26
Abstract: Nicotinic acid salts of formula (I) (where R1-3 are H, methyl, ethyl, propyl or isopropyl), e.g. p-aminobenzoic acid 2-diethylaminoethyl ester nicotinate, are new cpds. (I) have the capacity to permeate cell (esp. nerve cell) membranes and become involved in cell regeneration metabolism. They are more active in this respect that procaine or p-nicotinamidobenzoic acid diethylaminoethyl ester. (I) are particularly useful in the treatment of ageing diseases; their effect in improvising learning and memory is particularly marked. Specifically claimed are (I: R1=H R2=R3=H); (I;R1=Me, R2=R3=H); and (I; R1=R2Me, R3=H). (I) are prepd. by reacting the ester with nicotinic acid in water or in an organic solvent. Pref. organic solvents are MeOH, EtOH, i-PrOH, acetone, CHCl3, CCl4 and trichloroethylene.
Patent FR-2353787-A1 (FR)
Title: Thermal insulator composed of plastic film lined with metal foil - is light, compact, easily made and easy to work
IPC: F16L59/07
Filed: 1976-05-31
Abstract: The invention combines the advantages of two types of thermal insulators- the poor conductors of heat and the good reflectors- by combining a film of transparent plastic with a foil of metal, using any suitable means. The sheets might be used double, sepd. by an air gap or a vacuum; when insulating a solid object, they might be provided with ribs, to reduce the contact area.
Patent FR-2354497-A1 (FR)
Title: Flow control valve for water heater - has piston with circumferential ridges to prevent build up of scale
IPC: G05D7/01
Filed: 1976-06-08
Abstract: A flow control valve for a water heater consists of a piston (2) attached by a rod (11) to a diaphragm (7). A spring (4) acts on the diaphragm (7) so that the piston (2) is kept in the valve open position. The upper surface of the diaphragm (7) is connected to the venturi (1) so that the depression due to the velocity of the water lifts the diaphragm (7) upwards and tends to close the valve. The piston (2) slides in a tubular guide (8). The piston (2) is provided with circumferential ridges (9) which prevent any tendency of the piston 2) to bind in the guide due to the build-up of scale deposited by the water. Any scale which is deposited is easily rubbed off by the motion of the piston.
Patent FR-2314743-A1 (FR)
IPC: A63C9/086
Filed: 1976-06-15
Abstract: A safety ski binding which includes a cable interconnecting a ski boot or plate attached to a ski boot with the ski. A restoring spring is provided which forces the cable toward a position holding the ski boot in an in-use skiing position on the ski, while permitting relative movement of the boot and ski and consequent extension of the cable. To prevent serious injuries in the case of full extension of the cable, the cable is disconnected, thereby fully separating the ski and boot. In preferred embodiments, a ski brake is provided to brake the separated ski.
Patent FR-2319700-A1 (FR)
IPC: E21B43/243
Filed: 1976-07-21
Abstract: 1501310 Underground gasification of coal INSTITUT NATIONAL DES INDUSTRIES EXTRACTIVES 21 July 1976 [31 July 1975] 30342/76 Heading C5E Coal or lignite in an underground deposit in the form of a plurality of layers situated at a depth of more than 500 metres is gasified by circulation of a gaseous current with filtration across the layers, obtained by injecting air or other gasifying agent through one or more boreholes drilled from the surface and by collecting in one or more other boreholes the gas produced in the deposit by the action of the gasifying agent, the gasification being carried out under pressure by alternating in a cyclic manner periods of increase in pressure up to a maximum value of 30 to 50 bars with periods of decompression down to a minimum value of 15 to to 25 bars, the seam being ignited by a source of heat introduced into one of the boreholes, characterized by the combination of a continuous production of gas and a cyclic fluctuation of pressure in the underground gas generator obtained by variation in the rate of flow and the pressure of the injected gasifying agent, the pressure of gas along the whole circuit remaining constantly below the hydrostatic pressure prevailing in the overlying terrain. Following a phase of gasification, air may be blown in to bring about combustion of fuel which has escaped gasification to convert this potential energy into sensible heat. The boreholes used for evacuating the gas may be equipped with cooling devices. The gasification process may be associated with the production of electricity in a power station.
Patent FR-2321461-A1 (FR)
Title: Rapid hardening siliceous constructional material - formed by mixing an alkali silicate with a polyvalent metal cpd. and an isocyanate
IPC: C04B38/02
Filed: 1976-08-06
Abstract: Rapidly setting compsn. is obtd. by mixing an aq. soln. of an alkali metal (or ammonium) silicate with at least one polyvalent metal cpd. having a water solubility at 20 degrees C of >=0.01g/1., which is not a silicate, and/or a hydraulic cement, in sufficient amt. to react with all the silicate ions, in the presence of a polyisocyanate opt. mixed with a polyor monofunctional organic cpd. which is reactive with isocyanates. The compsn. may, before setting, be spread onto a variety of surfaces, floors, ceilings, walls, oblique and incurved surfaces witha trowel, brush, rollr or spray gun, or cast moulded or extruded into any shape, such as plates blocks, half cylinders, etc. and find many uses in civil engineering.