baber/WOPTO huggingface dataset:
Patent FR-2241696-A1 (FR)
Title: Blocks of solid fuel for rockets - have grooved contour to ensure constant rate of combustion
IPC: F02K9/20
Filed: 1973-06-29
Abstract: The blocks of solid fuel for rockets are of cylindrical form with longitudinal grooves. A central V section groove (S) has steeply sloping sides (F and F') with a small radius (G) at the vertex. A shallower groove (S') is arranged on either side of the central groove. If the distance from the bottom of the groove (S) is denoted by e and the radius of the block is denoted by R then the ratio e/R should be greater than 1.6 to ensure a constant rate of combustion and to minimise residual quantity of fuel which is unburnt. When mounted in the rocket the blocks are surrounded by an inhibitor so that combustion occurs only on the grooved surfaces.
Patent FR-2197186-A1 (FR)
Title: Light-modulation element - having temp-dependent transmittance for use in light-point raster for holographic storage of binary data
IPC: G02F1/17
Filed: 1973-08-22
Abstract: Temp. changes causing variation of the transmittance of the element are produced pointwise on the surface of a monocrystal having a sharp absorption edge (pref. CdS, CdSe or ZnS), whereby a high contrast is achieved. The temp. changes can be produced with a grid-like electrode system connected with miniature resistors, or by means of a digital laser-beam scanner. The construction is simple, and large seale applications are possible (up to 10000 elements).
Patent FR-2201345-A1 (FR)
Title: Nickel extraction and sepn. from ores - pref. iron bearing nickel ores by heating in fluidised bed, and subsequent electrolysis
IPC: C22B3/00
Filed: 1973-10-02
Abstract: Ni is extd. and sepd. from Fe-bearing ores by rapid heating of an aq. FeCl2/NiCl2 soln. of the crushed minerals in a fluidized bed of e.g. small glass spheres in air at 150-250 degrees C and is approx. 3 bars. In the instability established, the Fe oxides comprise insoluble residues, water and HCl are vapourised, and the NiCl2 remains in soln., from which the Ni is extractable by ion-exchange and electrolysis. Partic. useful in treating unsulphurized limonites.
Patent FR-2250745-A1 (FR)
Title: Reagent for radio-immunoassay of testosterone - by reacting testerone-oxime with tyrosine ester
IPC: C07J41/00
Filed: 1973-11-12
Abstract: Testosterone-3-(O-carboxymethyl)-Oximetyrosine methyl ester is prepared by reacting testosterone-3-(O-carboxymethyl)-oxime and tyrosine methyl ester in the presence of N,N-dicyclohexylcarbodiimide in an apolar solvent at 0-25 degrees C. Then the solvent is evaporated and the crude residue is crystallised.
Patent FR-2244834-A1 (FR)
Title: Aluminium (alloys) with highly reflecting surfaces - by electroplating with nickel followed by chromium, used as mirrors
IPC: C25D5/14
Filed: 1973-12-05
Abstract: Process comprises (a) polishing, degassing and buffing; (b) surface activation; (c) chemically surface treating the surface to obt. a surface suitable for electroplating; (d) forming several layers of electroplated nickel and (e) forming a layer of electroplated chromium. A layer of electroplated Cu can be used between the Ni layers, followed by polishing and buffing; an org. degreasant is pref. used and (b) pref. uses HNO3 soln. The finished coating may consist of (I) 15 plus-or-minus 5 mu Ni and 0.3 plus-or-minus 0.1 mu Cr; or (II) 8 plus-or-minus mu Cu plus 8 plus-or-minus 3 mu Ni and 0.3 plus-or-minus 0.1 mu Cr. Used as decorative interior panels; mirrors for bathrooms; and side and rear mirrors for cars. Prods. can replace glass mirrors; can be shaped, bent, punched and cut; and have high-thermal shock resistance and high corrosion resistance.
Patent FR-2258513-A1 (FR)
Title: Double-glazed door for oven - has frame with grooves having inner ribs gripping pane sealing strips
IPC: F24C15/02
Filed: 1974-01-22
Abstract: In section the frame presents a web (1a) perpendicular to the pane with four spaced legs (1b to e) projecting normally from it to form two outer channels (4) having continuous parallel ribs () on each inner leg face. The distance between rib extremeties is slightly superior to pane (2) thickness whilst being less than the thickness of pane plus edge seal (7). Outer legs (1b and e) may be somewhat thinner than inner legs, thus acting as blade springs. Ribs (6) are rounded and the seal (7) enveloping the pane edge is of elastically deformable fluffy material, e.g. cotton line annealed aluminium.
Patent FR-2268615-A1 (FR)
Title: Fibre reinforced pipes produced at successive stations - served by revolving head with radial spindles as pipe moulds
IPC: B29C53/80
Filed: 1974-04-26
Abstract: A machine for manufacturing tubes, esp. fibre-reinforced resin tubes, comprises a central reolving head from which a number of spindles radiate outwards, so that as the revolver head turns, the spindles are eacy successively brought to a different operating station (A, B, C, D). Preferably, all the spindles lie in a horizontal plane, supported at their inner ends by the revolver head, and at their outer ends by a temporary bearing. Station (A) is pref. used for applying the separating wrapping onto the spindle station (B) for winding using a travelling carriage for feeding the fibre reinforcement onto the spindle, station (c) is for the finishing operations and has a vapour removal hood, while at station (D) the finished pipes are ejected. Compressed air is pref. used for ejecting the pipes. Successive operations are carried out on a pipe in one single apparatus, thus eliminating transfer times between separate items of equipment.
Patent FR-2273139-A1 (FR)
Title: Connection between shuttering panels - has prism section corner member joined to channels on panel edges
IPC: E04G11/02
Filed: 1974-05-27
Abstract: The connection is between two shutter panels forming a dihedron for use in the erection of two converging walls or the upper ribs of tunnel-shuttering. Each shutter panel has a channel section around the edge, with the flanges parallel to the shutter face and turned towards the outside. The corner member comprises a solid or hollow metal section (17) usually shaped like a prism with two sides which fit into the angle between the ends of the shutter faces (5, 6). The member also has protrusions on two adjacent sides which correspond to the channel sections, enabling the member to be bolted onto the panel. It can also be screwed if preferred.
Patent FR-2241034-A1 (FR)
Title: Plastics cable clamp for use with masonry - has screw driving upper hollow housing down onto cable in U-shaped lower part
IPC: F16L3/10
Filed: 1974-08-14
Abstract: The plastic clamp, for retaining cables to masonry, has a lower U-shaped support and an upper, hollow rectangular housing which slides over the arms of the lower part. The cable is laid between the arms of the lower part and rests in a shallow V at the base of the U. The upper part has a similar V which closes down on the cable clamping it in place. The upper part is driven downwards onto the lower part by a screw in its top. The thread of the screw engages with a thread cut into the curved surfacers on the insides of the arms of the U.
Patent FR-2242532-A1 (FR)
Title: Lattice beam for concrete reinforcement - triangular spacers between horizontals have out-turned projecting ends
IPC: E04C5/065
Filed: 1974-08-28
Abstract: The framework of reinforcing steel consists of longitudinal bars and kept apart by spacers shaped as stirrups. Each stirrup (4) is bent to a v shape with the open end downwards. At the open end there are horizontal pieces (5) with a hooked end (6). The vertical part of the stirrup is inclined at a small angle to the vertical. The tops of the stirrups are welded to an upper longitudinal bar (1). Another longitudinal bar (2) is welded to the centre of the horizontals. Further longitudinal bars can be welded to the upper and lower parts of the hooks (6).
Patent FR-2293821-A1 (FR)
Title: Magnetoresistive static switching of electric motors - has magneto-resistors forming part of bridge controlling stator supply
Inventor: DELPOUX ALBERT
IPC: H02K29/08
Filed: 1974-12-06
Abstract: The static switching of brushless electric motors has the switching derived from a magneto-resistance system detecting the position of the rotor(21) and controlling the current supply to the stator windings(22, 23, 24, 25) accordingly. The fixed sensor consists of two such magneto-resistance elements spaced apart and forming part of a resistance bridge. Current control is via a thyristor or triac switched d.c. supply the trigger or gate electrodes being fed from the sensor circuit. An amplifier(27) operating in a saturated mode may itself provide the stator winding supply and again be controlled from the sensor circuit, the sensor output is varied by a shaped magnetic element acting as an armature.
Patent FR-2297150-A1 (FR)
Title: Vehicle front wheel assembly with macpherson suspension - has outer suspension strut springs locked at ends to vehicle and stub axle carriers
IPC: B62D7/22
Filed: 1975-01-09
Abstract: A vehicle front wheel assembly with a Macpherson suspension has the stub axles joined to the body via telescopic shock absorbers (6) within coil springs (10). The ends of each spring press on a projection of the stub axle carrier (3) and on the vehicle body (8). The spring is unable to rotate and also acts as a means of returning the wheel to the "straight ahead" position. The spring is immobilised by end locking pieces.
Patent FR-2302229-A1 (FR)
Title: Agricultural tractor cabin protective frame - has ends of upper front transverse members fitted in sleeves on side members
IPC: B60R21/13
Filed: 1975-02-27
Abstract: A protecting frame for an agricultural tractor driver has, each side, an inverted Y shaped side members with a triangular gusset plate at each upper corner. The side members extend round the front and rear and have short sleeves into which fit horizontal transverse members front and rear. Each side member has front and rear feet supported on the mudguard. Each foot matches the slope of the mudguard and serves as an anchorage for a bar which slopes inwards towards a common connection which is supported on the tractor axle. Each bar has a top which extends horizontally, and has a vertical part extending downwards. A circular section horizontal bar extends between the two rear feet.
Patent FR-2304094-A1 (FR)
Title: Optical viewing system with two magnifications - comprises objective, eye piece, and mobile unit with divergent and convergent lenses
Inventor: BALUTEAU JEAN-MICHEL
IPC: G02B23/00
Filed: 1975-03-14
Abstract: The double magnifying glass is intended for high precision viewing, and comprises an objective (1) and an eyepiece (3), the latter including the image formed by the image in its focal image plane. The lens combination provides a high magnification with a low magnification, this being obtained by placing a mobile optical unit on the optical axis. This does not alter the position of the focal image plane. The optical unit comprises a first diverging lens and a second diverging lens. If the focal length of the objective is F, the power of the divergent lens is p, the power of the converging lens is kp (k negative), the ratio of the two magnifications is r and the distance apart of the two lenses is d, then (1) kp = p X 1 - d kp (1+p) =1/r and (2) p = (kd2 -2kd + k+1)/kd(1-d), where the focal length F is assumed to be unity.
Patent FR-2307396-A1 (FR)
Title: Speed setting assembly for motor - consists of conducting rubber pads which are designed to act both as speed setting resistors and shock-absorbing mounts
IPC: H02K23/66
Filed: 1975-04-08
Abstract: The speed setting assembly, for a motor (used eg to drive the fan of a fan-assisted space heater), consists of conducting rubber that acts both as a speed -controller resistor and as a shock-absorber for mounting the motor to its support. The conducting rubber block (1) is located between the metal fixing plate (3) of the motor and the metal support (2). The speed of the motor can be set by the appropriate choice of resistivity for the rubber and by the number of fixing points made to it. The number of fixing points determines the number of 'rubber resistors' that are connected in parallel.
Patent FR-2310512-A1 (FR)
Title: Three way central heating mixing valve actuator device - has valve control heating resistance switch closed when valve stem moved to temp. controlled position
Inventor: PERCEBOIS ALAIN ANDRE PIERRE
IPC: G05D23/275
Filed: 1975-05-06
Abstract: An actuator device for a three-way valve used with central heating systems to control the flow of water through an inlet which by-passes the boiler has a temperature sensing device in the outlet to supply an electric current, which increases with increasing temperature, to the coil of a thermal element which controls the movement of the valve head. When the valve control handwheel is in one particular position, a notch in the skirt allows the ball to move upwards off the spring leaf of a switch so that the switch is closed and the electrical control operates. Rotating the handwheel opens the switch and cuts out the electrical control.
Patent FR-2315410-A1 (FR)
Title: Luminous distress signal triangle - is fitted with lamps and flasher and is fixed to vehicle by magnets mounted on base
IPC: B60Q7/00
Filed: 1975-06-25
Abstract: A luminous distress signal can be used to signal any form of danger on road, rail, or water. It consists of a luminous triangle (a) which has a several lamps (C) inside it. These are fed by current from a battery, or mains. The device can be used immediately by placing on the vehicle roof or a pole by magnets fixed on its base. A flasher unit (6) can be fitted in series with the lamp and the connection to the supply is by a plug and socket (d). As an alternative fixing, a mast of metal, wood, or plastic can be clipped to the side of the car.
Patent FR-2292936-A1 (FR)
Title: Ventilated false ceiling - has air feed box with connector plates on sidewalls equipped with mounting lugs
IPC: E04B9/02
Filed: 1975-10-14
Abstract: The air is distributed by cruciform pieces at the joins between the supporting beams. The air feed box (4) is of square section, with connector plates (7) on the four side walls (41), each with an arm (71) running parallel to the sidewall, on which there is a lug (72) inclined downwards and away from the sidewall. This engages in a mating hole in a welded connector plate on the supporting beam or the lighting conduit. There can be a connector (42) on the top (43) of the box to allow its suspension from the real ceiling. A turbulence-inducing discharge piece (8) can be pressed into the box from underneath, and held there by a spring lug.
Patent FR-2330313-A1 (FR)
Title: Cage for rearing and observing small animals - has removable sides formed of mesh and metal sheet with removable nesting box fitted to one side
IPC: A01K1/03
Filed: 1975-11-06
Abstract: The cage is used for rearing and observing small animals and comprises a rigid wire frame supported on legs. The two long sides are made from metal sheet or, if required, transparent plastic. The top and bottom of the cage are made from wire mesh. The top has a carrying handle and the bottom is provided with a litter tray. One short side of the cage is wire mesh, the other being metal sheet. This latter has an opening leading into a nesting box, itself provided with a sliding observation window and a trap door. All the sides are removable, including top and bottom nesting box.
Patent FR-2332950-A1 (FR)
Title: Pneumatic bung inserter for beer barrels - forces bung sideways from vertical magazine under vertical pneumatic cylinder
IPC: B65B7/28
Filed: 1975-11-26
Abstract: A device for forcing bungs into beer barrels, consists of a pneumatic cylinder (1) which is suspended by a cable (29) over the barrel, connected to an air compressor, and with an operating handle (4) at the top, and with a vertical tube (7) attached to it, alongside, acting as a magazine for the bungs, so that when operated, a bung falls from the magazine into a horizontal feed chamber (5) at the bottom, and is then forced sideways by a small compressor air cylinder (6) at the end of the horizontal feed chamber, so that it is deposited into a vertical sleeve (2) attached to the bottom of the vertical pneumatic cylinder which is aligned with the bung-hole, so that the bung is forced into the bung hole.
Patent FR-2302573-A1 (FR)
Title: Recharging combustible material to nuclear reactor - with separate withdrawal of cover and control assembly, simplifying maintenance
IPC: G21C7/12
Filed: 1976-02-25
Abstract: A method of recharging combustible material to a nuclear reactor allows separate withdrawal of the cover and the upper internal structure with the control assembly. The nuclear reactor consists of a covered vessel with internal structures, above the core, carrying means of guiding the control assemblies. The control assemblies incorporate an operating shaft and a number of absorbant rods. The method consists of raising the control assemblies and fixing the absorbant rods in relation to the upper internal structure, while freeing the operating shafts, lifting the reactor cover together with the operating shafts, lifting the absorbant rods together with the upper internal structure and stocking them, replacing the used combustible material and putting back the structure and cover. The appts. for fixing and freeing the absorbant rods and the operating shaft incorporates systems of balls which can enter or leave holes and notches under the action of a ring operated by a screwed bar. The method is simpler than existing methods, and takes less time.
Patent FR-2342434-A1 (FR)
Title: Two stage epicyclic reduction gear - uses coaxial units mounted inside wheel hub of heavy vehicle
IPC: B60K17/04
Filed: 1976-02-27
Abstract: The drive shaft passes through the fixed stub axle about which the wheel hub turns. The first epicyclic stage consists of a pinion (25) on the end of the drive shaft driving through five planet wheels (26) on a carrier (30) to the internally toothed, fixed sun wheel (28). The drive is then transmitted via internal teeth (32) on the carrier and a freely mounted pinion (34) on the drive shaft to a second set of five planet wheels mounted in a carrier (38) fixed on the stub axle. This second carrier is made in one piece with the first sun wheel (28). From the second set of planet wheels, the drive is transmitted to the hub via teeth (38) inside the hub. An anti friction ring (40) is placed between the first and second planet wheel carriers.
Patent FR-2296258-A1 (FR)
Title: Magnetically controlled electric contactor - has fixed contact and moving contact as part of printed circuit actuated by magnetic material mass
IPC: H01H36/00
Filed: 1976-04-15
Abstract: An electric contactor with magnetic control provides a reliable, small and low price device. It has a fixed contact (1) made up of a plastic material sheet (1) and a copper strip (1a) and a moving contact made up of a strip (2a) as part of a printed circuit (2). It also has a moving mass (3) of magnetic material. The mass (3) has a conical part (3a) in contact with a recess in the strip (2a) and another conical part in contact with a recess (4a) of the board (4) of the printed circuit (2). When a magnet is placed in contact with the sheet (1) and above the mass (3), this magnetic mass (3) is attracted by the magnet and the moving contact (2a) makes contact with the fixed contact (1a).
Patent FR-2357490-A1 (FR)
Title: Activateur biologique pour fosses septiques
IPC: C02F3/34
Filed: 1976-07-06
Abstract: L'invention concerne un activateur biologique pour fosses septiques. Il est caractérisé par le fait qu'il se présente sous la forme d'un produit non corrosif, non touque, finement divisé, de surface spécifique importante, constituant un support pour la flore microbienne anaérobique facultative, permettant d'augmenter la densité de saturation bactérienne dans la fosse septique pour une quantité équivalente de nutriment.
Patent FR-2364519-A1 (FR)
Title: Assembling an electro=optical cell - comprising two plates and PTFE spacer, directly sealed by heat and pressure
Inventor: PLOIX JEAN-LUC
IPC: G02F1/01
Filed: 1976-09-10
Abstract: The cell is made of two parallel plates sepd. by a distance piece, the three parts thus enclosing a space for the electro-optical fluid. The distance piece is cut from PTFE film, and the three parts sealed together at a controlled temp. and pressure. A pressure of 4 kg./cm.2 and a temp. of 350-450 degrees C. are pref. employed for >30 mins. The joint may be reinforced with an adhesive applied to the exterior of the finished cell. Parallel plates may be in glass, silica or metal, and may be covered with conducting, semi-conducting or dielectric material.
Patent FR-2368178-A1 (FR)
Title: Phase locked loop circuit - has constant voltage added to error voltage and switchable capacitor connected to control input of VCO
Inventor: COUET JACQUES
IPC: H03L7/12
Filed: 1976-10-15
Abstract: The phase locked loop consists of a VCO (1) controlled by the output of a phase comparator (2). An adder (4) adds a constant DC voltage to the phase comparator's output error voltage and applies the sum to the VCO's control input via a resistor (31). The frequency control input of the VCO is also connected via a second resistor (32) to an earthed capacitor (33). The capacitor is shunted by a controlled discharging switch (37).
Patent FR-2328387-A1 (FR)
Title: Standing crop preparation unit on mower - has cylinder and cutter with guide plate, conveyor duct and baffle plate
IPC: A01D43/10
Filed: 1976-10-21
Abstract: The mower (1) is supported by a runner (2) on the ground. Above the runner are two guide wheels (3), a V-belt (4) to which the impact cutter-blade is fixed. Above the mower (1) is a cylinder (6) which rotates so that the implements (7) fixed to it move backwards. Between the cylinder (6) and the mower (1) is a guide-piece (9) which slopes upwards behind to form a duct (10) between it and the cylinder (6). The duct (10) widens out behind towards a baffle plate. A comb (12) is positioned so that its projecting teeth (13) which may be in the form of tines or roller, pivot into the duct (10). In front of the cylinder (6) is a deflector (14) above an in front of the cutting area and extending the width of the cutter. The deflector (14) can be adjusted in height and position. The deflector (14) may form part of a casing (6).
Patent FR-2371197-A1 (FR)
Title: Nouveaux derives de l'acide isobutyrique disubstitue ainsi que leur application comme medicaments
Inventor: KARADAVIDOFF M I
IPC: A61K31/34
Filed: 1976-11-18
Abstract: L'invention est relative à des esters dialkylaminoéthyles de l'acide isobutyrique 3,3'-disubstitué de formule :
Patent FR-2336751-A1 (FR)
Title: Control and surveillance of self propelled vehicle - uses closed loop antennae arranged along track and magnetic switches on vehicle
IPC: B61L27/04
Filed: 1976-12-21
Abstract: A self propelled vehicle is controlled by signals from closed loop antennas arranged in segments along the track to be followed. Magnetic poles signal stopping positions and signals from the vehicle indicate its position w.r.t. individual antennas. The self propelled vehicle, which can be controlled automatically or manually, receives signals from pairs of magnetic poles in a distinctive arrangement along the vehicle track. These poles activate magnetic blade switches which determine particular positions at which the vehicle must stop. Electronic logic circuits receive several signals to activate brakes to prevent motion at a controlled speed unless all conditions are satisfied.
Patent FR-2379931-A1 (FR)
Title: Earth faults protection circuit in power distribution network - compares residual current polarity with homopolar voltage polarity
IPC: H02H3/38
Filed: 1977-02-02
Abstract: The protection circuit is for earth faults in power distribution networks. It detects the appearance of a homopolar voltage and determines its polarity during a fixed period of time. The residual current present in each phase line is detected during this fixed time and its polarity determined. The homopolar voltage's polarity is compared with the residual current's polarity in order to discover the presence of a fault. If present, this fault is then localised.