baber/WOPTO huggingface dataset:
Patent NL-2028531-A (NL)
Title: Circularly polarized patch antenna shaped like chinese character 'jia'
Inventor: XI WANG
IPC: H01Q9/04
Filed: 2021-06-24
Abstract: The present disclosure relates to the technical field of antennas, and relates to a circularly polarized patch antenna shaped like a Chinese character 'jia'. The circularly polarized patch antenna comprises a ground plate and a dielectric layer plate, wherein the ground plate and the dielectric layer plate are parallel to each other; the dielectric layer plate is arranged above the ground plate, a metal sheet A is arranged at the top of the dielectric layer plate, and a metal sheet B is arranged at the bottom of the dielectric layer plate; a 3D L-shaped probe is arranged between the ground plate and the dielectric layer plate; the 3D L-shaped probe is composed of a vertical rod and two horizontal rods of equal length, one end part of one horizontal rod and one end part of the other horizontal rod are vertically and fixedly connected with each other, and the top of the vertical rod is fixedly connected with the common end part of two horizontal rods, each horizontal rod is parallel to the dielectric layer plate, and the vertical rod is vertical to the ground plate; a through hole is formed in the ground plate, and the lower end of the vertical rod passes through the through hole and is connected with a coaxial connector arranged at the bottom of the ground plate; the ground plate and the dielectric layer plate are both square, and the side lengths are the same, and the metal sheetAis shaped like a Chinese character 'jia'. The circularly polarized patch antenna is simple in structure, low in cost, attractive in appearance, safe and reliable.
Patent NL-7003297-A (NL)
Title: Racemic mixtures of prostaglandines of the - pge2 type
IPC: C12P31/00
Filed: 1970-03-09
Abstract: Racemic mixtures of prostaglandines of the PGE2-type. Cpds. of general formula (I): (where R1 is H, alkyl(C1-8), cycloalkyl (C3-10), aralkyl (C7-12O,phenyl opt. substd. with 1-3Cl-atoms or alkyl gps. (C1-4), or an ethyl gp. substd. at the beta-posn. with 3 Cl, 2 or 3 Br- or 1,2 or 3 I-atoms; R2 is H or alkyl (C1-8) substd. with 0-3 F-atoms; R3 and R4 are H or alkyl (C1-4); V is cis-CH=CH or -C=C-; A is alkylene (C1-10) substd. with 0-2 F-atoms) are prepd. by reacting the beta-isomer in inert liquid diluent and at 0-80 degrees C with a base, until a considerable amount of the alpha-isomer is formed. An aqs. soln. of the base used must have a pH of less than 10. The cpds. have anti-nasal blocking-, gastric acid inhibiting and blood-platelet aggregation inhibiting properties. Additional uses are in anti-hyperlipidemia, blood-additives in artificial circulation, smooth-muscle stimulation, hypotensives, inducing labour in pregnancy, regulation of the reproductive cycle, acceleration of epidermic cell growth, inhibition of abnormal lipid-mobilisation.
Patent NL-7105532-A (NL)
Title: Stable aq elastomer latices
IPC: C08J3/07
Filed: 1971-04-23
Abstract: Stable aqueous elastomer dispersions in which >80% of the dispersed particles are smaller than 1.2 mu, are made by emulsifying in water an organic solvent solution of the elastomer in a solvent system consisting of a solvent for the elastomer and 7-75 wt. % of a non-solvent, using a volume ratio of elastomer soln.: water of 0.5:1 to 2:1, with about 0.5-2.5 g emulsifier per 100 ml polymer cement, followed by removal of the solvent-non-solvent system. Latices can be made of elastomers which cannot normally be made by emulsion polymerisation, such as poly(epichlorhydrin), polydienes, butyl rubber, ethylene-propylene copolymers, ethylene-propylenediene terpolymers and polurethanes. Generally a polymer cement is made contg. 5-25% solids, with a viscosity of 500-2000 cPs. and this is emulsified with water using an emulsifier such as dodecylbenzene sulphonate in an appts. such as an Eppenbach rotary homogeniser. The solvent system is removed e.g. under vacuum in a Rince Evaporator. The resulting latices are useful as binders for paper, non-woven fabrics and textiles.
Patent NL-7209861-A (NL)
Title: Fluorcarbon waxes prodn - by pyrolysing ptfe
IPC: C08F8/50
Filed: 1972-07-17
Abstract: PTFE or mixed polymers of TFE with perfluorolefins are pyrolysed at 450-600 degrees C in the presence of an inert gas, 0.1-5% nitric oxides, sulphur oxides and sulphuryl, nitrosyl, nitroso, or thionyl substances and, in partic., in shear and fraction forces. The reaction time is reduced to 0.25-10 mins. to produce PTFE of mol. wt. 1-10 million.
Patent NL-7410867-A (NL)
Title: Double-ended drill bit with two sets of cones - rotatable about horizontal axis when first set is worn
IPC: E21B10/00
Filed: 1974-08-14
Abstract: The drill bit is mounted on a carriage pivoted in a yoke which consists of two arms extending vertically downwards at either side of the bit housing. The arms being able to slide up and down. When it is required to replace the worn cones, the drilling fluid pressure is increased, thus forcing the carriage and yoke downwards against a compression spring, whereupon in one arm of the yoke, rotates the carriage through 180 degrees, thus exposing the unworn cones.
Patent NL-7413254-A (NL)
IPC: F28D19/00
Filed: 1974-10-08
Abstract: 1462758 Fluid heaters CLARKE CHAPMAN Ltd 8 Oct 1974 [8 Oct 1973] 46838/73 Heading F4S Generally vertical thermosyphon circulation paths (arrowed in Fig. 2) are set up in a body of intermediate fluid (e.g. water) in a container 20 by one or more baffle plates 18 disposed in said container between a heater 10 (e.g. a burnerfired combustion tube) and a duct 28 carrying a flow of fluid to be heated (e.g. natural gas at high pressure), both the heater 10 and duct 28 being supported within the container and being withdrawable from the container via the same end thereof. As shown, there are two of the baffles 18 with the burner tube 10 therebetween, and with the duct 28 (in the form of a double-banked sinnous coil) on the other side of each baffle. The baffle, burner and duet assembly is secured to an end plate 30 and is removable therewith as a unit from the container 20. 36 are support plates attached to the baffles 18 and forming part of the withdrawable unit. 38 are side plates attached to the container wall and further defining the circulation paths of the intermediate fluid. The container has an expansion chamber 32 and a liquid level sight glass 22. A sensor (not shown) maintains constant the temperature of the intermediate fluid by controlling the burner 12. When natural gas is being heated in the coil 28 the burner fuel may be supplied by a tapping 42 from the outlet end of the coil.
Patent NL-7501964-A (NL)
IPC: B29C65/00
Filed: 1975-02-19
Abstract: A closure flange molded of synthetic plastic resin has an internally threaded cylindrical neck surrounded at one end by a circumferentially enlarged base. An annular groove is formed on the flange base for retention of a thermoplastic bonding element having electromagnetic conducting particles embedded therein. The flange manufacture includes making the bonding element up from an elongated strand into a complete annulus and securely inserting the annular bonding element within the groove in the flange base.
Patent NL-7511645-A (NL)
Title: Underwater pipeline coupling - has welded hald and moving half with internal taper for cone insert and seal rings compression
IPC: F16L23/028
Filed: 1975-10-03
Abstract: A clamping and sealing coupling for sections of underwater oil and gas pipelines at high pressure consists of a first half which is welded to the first pipe end. The second half around the other pipe end has an internal taper which can be tightened against an inside cone with serrations on the surface contacting the other pipe end. Bolts between the two coupling halves urge the two pipe ends together and compress three seals to make the joint leakproof for oil and gas. The design of this coupling results in low mfrg. costs. No pumps or hydraulic clamps are required to produce a fluid-tight connection. The coupling can be used repeatedly and requires no sealing cpds.; it can be used for pipes which may not be perfectly in line. The coupling can be assembled by a diver in a short time.
Patent NL-7603082-A (NL)
Title: Underwater platform pile seal to column - has ring protected by annular shield with drawn axially after pile insertion
IPC: E02B17/02
Filed: 1976-03-24
Abstract: The seal is for sealing off the space between a tubular column or pile and a pile passing through it so as to support a permanent platform at sea. It comprises a first sealing ring (28) and an annular shield (11), through which the pile (1) passes, for the ring, both being coaxial with the column. The shield fits between the ring and the pile, and means are provided for its axial movement in relation to the ring, thus releasing the latter, which bears against the pile to form a seal between it and the column. The ring can be of trough-section, the inner wall diverging from the vertical so that the open top is wider than the base and tends to spring against the pile when released by removal of the shield from between it and the latter.
Patent NL-7701535-A (NL)
Title: Seal for the cavity between two concentric pipes - esp. telescopically movable coaxial pipes for injecting steam down borehole
IPC: E21B17/07
Filed: 1977-02-14
Abstract: An arrangement for sealing the space between two telescopically movable, coaxial pipes comprises a compensator in the form of a bellows, which can be introduced coaxially between the two pipes. One end of the compensator has a first coupling for making a joint along the circumference of the compensator with the inner pipe. The other end has a second coupling for attaching the circumference of the compensator to the outer tube. The first coupling includes a shrink-fitted sleeve for making a sealed joint with the inner pipe, whilst the second coupling is connected to the outer pipe by welding. Effectively absorbs the axial motion between the two pipes, and excludes damp and oil from the insulating material such as calcium silicate between the two pipes whilst they are used for injecting steam intot he strate to increase oil yield.
Patent NL-7706459-A (NL)
IPC: B03D1/24
Filed: 1977-06-13
Abstract: DISPERSED AIR FLOTATION MACHINE A machine for dispersing gas bubbles in a liquid includes a horizontal series of adjacent flotation cells without baffles or mechanical gas distribution means.  In each cell, an ejection device is mounted to expel a two-phase gas-liquid mixture into the cell.  Liquid is pumped into the ejection devices so that the density and energy of the mixture at the point of ejection falls within Region I in Figure 3.
Patent NL-7804921-A (NL)
Title: Box for jewels, medicaments or cosmetic articles - has two pairs of locks each released by thumb and forefinger
IPC: A45C11/00
Filed: 1978-05-08
Abstract: The box which cannot be easily opened by a young child, has a hinged lid (2) with two pairs of locking members (4, 5 and 6, 7) which have hooked lower ends which engage under stops (8) in the upper edge of the box. The member of each pair are spaced so that they can be engaged by thumb and forefinger of a hand to release them and open the box, by applying pressure on the vertical faces of these members. Member (4, 7) on the sides of the lid are nearer to the front than the back.
Patent NL-7906850-A (NL)
Title: Coupling agent to promote adhesion between - a polymer and glass metal or another polymer
IPC: C03C17/30
Filed: 1979-09-13
Abstract: Silicon compounds of formula:- (X)aSi(T)b R-(Z)c d (where R is organic; X is halogen, hydroxyl, alkoxy, aryloxy, organo-oxycarbonyl, azido, amine or amide; T is (cyclo)alkyl, aryl, aralkyl; a is 1 to 3; b is 0 to 2; c is 1 to 10; d is 1 to 3; a + b + d = 4; Z is -OOC-R'N2, -OOCN3 or -SO2N3 in which R' is H, (cyclo)alkyl, aryl or -COOR" (R" is (cyclo)alkyl or aryl); are used as coupling agents to promote adhesion between a polymer and glass, metal or another polymer. Uses. include treatment of polyester cord for tyre reinforcement.
Patent NL-7907844-A (NL)
IPC: F28D9/00
Filed: 1979-10-25
Abstract: A combination structure interconnecting and sealing means for joining an air duct with the end plate of a heat exchanger core to allow for variations in spatial dimensions resulting from thermal expansion. The coupling arrangement comprises a circumferential flange attached, as by welding, to the circular duct. The periphery of the flange is provided with radial slots which are engaged underneath T-shaped clips attached to the heat exchanger plate. Within the circumference of the flange and generally in line with the duct and associated manifold section of the end plate is a U-shaped bladder member extending entirely around the joint and welded to provide a seal between the end of the duct and the plate. Similar bladder members are provided between adjacent units making up an overall heat exchanger core.
Patent NL-8120396-A (NL)
Title: Laminate for use in contact with molten glass - comprises refractory metal substrate enveloped in precious metal and isostatically hot pressed
IPC: C03B37/08
Filed: 1981-10-15
Abstract: Laminate for use in contact with molten glass comprises a substrate of refractory metal and a first layer of metal impermeable to oxygen. The substrate and layer are intimately bonded together by hot isostatic pressing. The refractory metal is selected from Mo, Nb, Hf, Ti, Cr, Ta, Zr, W, Re, Mn and their alloys and the metal coating is a precious metal selected from Pt, Pd, Ir, Os, Rh, Au, Au, Ru and their alloys and it surrounds the refractory metal completely. The coating is made to conform with the substrate and to present oxygen-impermeable walls around the substrate, is sealed around the substrate, then isostatically hot pressed to bond the coating intimately to the substrate. Laminates in both simple and complex shapes may be prepared when the coating is sintered onto the substrate with the aid of isostatic pressing. The coating is relatively thick and more difficult to penetrate by damage than vapour deposited and other coatings of prior art. The tools obtained have improved mechanical strength and will resist temps. of up to 1900 deg.C.
Patent NL-8300263-A (NL)
Title: Cardboard cigar box - has lid with sides overlapping sides of bottom when closed and hinged in bottom plane via adhesive strip
IPC: B65D5/66
Filed: 1983-01-25
Abstract: The box, particularly for packing cigars, comprises a bottom (1) with four upwardly extending sides (2-5) and a lid (6) with four downward sides (7-10). These are both produced from cardboard blanks and hingeingly connected via an adhesive strip possibly formed by part of labelling material on the lid. The hinge pivot axis (11) coincides with the intersection of the bottom (1) and one (2) of its sides. At least one (12) of its other intersections, pref. that opposite the hinge, is provided with an outwardly projecting lip (16) in the bottom plane. The side (3) opposite the hinge may be at an angle (alpha) of less than 90 deg. to the bottom.
Patent NL-8303305-A (NL)
Title: Thin film magnetometer - with thin ferromagnetic film and coil etc. providing alternating auxiliary field with a component in the plane of film
IPC: G01R33/06
Filed: 1983-09-27
Abstract: Magnetometer comprises a thin film of ferromagnetic material (I) with an axis of anisotropy of known orientation lying in the plane of the film; means for stimulating a magnetic auxiliary field with a component in the plane of the film; and means for detecting changes in the magnetisation of the film; in which (i) the (I) is of the type which exhibits an anisotropic magnetoresistive effect, such as the planar Hall effect or the planar magnetoresistive effect; (ii) a source is provided to pass an electric current through the film; (iii) the detecting means are arranged to detect the voltage over the two connections on the thin ferromagnetic film (formed by the planar magnet-resistive effect) or across the two Hall-voltage contacts (using the planar Hall effect), the voltage being representative of one component of a magnetic field to be measured in a direction perpendicular to that of the magnetic auxiliary field; and (iv) the magnetic auxiliary field is of such a strength that the ferromagnetic material is satd.
Patent NL-8800901-A (NL)
IPC: H01L21/52
Filed: 1988-04-08
Abstract: The invention relates to the combination of a support (3) and a semiconductor body (1) and to a method of manufacturing same, in which a deformable metal layer (2) is disposed between the semiconductor body and the support. The semiconductor body is connected to the support by pressing the semiconductor body and the support against each other under pressure after heating the metal layer. The semiconductor body is then provided at its surface facing the support with at least one projecting part (4), which is embedded in the metal layer.
Patent NL-8900246-A (NL)
IPC: A47C20/04
Filed: 1989-02-01
Abstract: The under-mattress (1) is provided with hollow sections (4, 5) between which a network (14) is stretched. The hollow sections (4, 5) are a special shape, thereby producing the maximum width of network (14). This shape is determined by a polygon, having a face (9) which runs inwards and downwards from the top outside edge (10) of the section (4, 5) and the top edge of which is directly below the network (14), a face (15) which connects to said face (9) at an angle and which runs downwards and/or outwards, and the width of which corresponds to the height of transverse reinforcements (6) which can be connected thereto, and at least a further face which closes the section cross-section. In an under-mattress (1) with flap-up head end (2) and/or foot end (3) provision is also made for a fixed section (7) which has a wall part (8) parallel to the face (9) of section (4).
Patent NL-8900429-A (NL)
IPC: B30B1/30
Filed: 1989-02-22
Abstract: The invention relates to a device for working plate-shaped material, said device being provided with a frame (1) and a pair of cooperating elongated working means (2, 3). One of these working means has a stationary arrangement in the frame, whilst the other is movable in the frame, transversely to its longitudinal direction, towards and away from the working means having a stationary arrangement in the frame. Both the frame (1) and the movable means (3, 4) are each provided with a plurality of guide means (5, 9) which, when seen in the longitudinal direction of the working means, are arranged one behind the other. An endless flexible pulling means (11, 12) is passed over said guide means, such that two parts of the pulling means extend from a guide means connected with the frame or the movable means, as the case may be, towards and are passed over a pair of opposite guide means, which are connected with the movable means or with the frame, as the case may be. Furthermore the pulling means (11, 12) is fixed at one end and is at its other end connected with a driving means (14, 15), by which the pulling means can be moved in its longitudinal direction.
Patent NL-8900621-A (NL)
Title: Compsn. for protecting against chemical warfare agents - contg. alkali metal salt of phenol cpd., oxime or polyethylene glycol mono:ether dispersed in polyethylene glycol (ether)
IPC: A62D101/02
Filed: 1989-03-15
Abstract: A cream or lotion consists of (a) an alkali metal salt of mono- or di- hydroxy phenols (opt. alkyl- or mono-alkoxy substd. where the alkyl is 1-4C), of acetophenone oxime, of 2,3-butane dione monoxime, or of a polyethylene glycol monoether, as active ingredient, dispersed in anhydrous state, in (b) a medium comprising polyethylene glycol(s), polyethylene glycol monoether or mixts., or mixts. of polyethylene glycol(s) and polyethylene glycol monoethers.
Patent NL-9001902-A (NL)
Title: Motor vehicle lift bridge - has spaced vertical columns, and hydraulic movable carriages
IPC: B66F7/04
Filed: 1990-08-29
Abstract: Lift bridge (1) includes two hollow columns (2) of steel plate, and of C-profile. Each column (2) is welded to base plate (11) in turn secured by bolts (12) to the floor. Inside each column fit a vertical movable carriage (3) which at top and bottom has guide wheels (5,6). Bottom of each carriage has a support (7) protruding from column (2) and having two support arms (8) which are pivotal. Pivot bearings (10) have a stop mechanism to secure arms (9) in required position. Lifting mechanism includes hydraulic jack (14) of which cylinder (15) is fixed to carriage (3). Piston rod (16) is connected to column (2).
Patent NL-9002754-A (NL)
Title: Purifying liquids esp. drinking water, by reverse osmosis - with storage of the purified liq. in cooled vessel utilising waste liq. from the purificn. to remove heat liberated by the cooler
IPC: B01D61/10
Filed: 1990-12-14
Abstract: Liq. purifcn. system compries a liq. purifcn. unit with an inlet for the liq. to be purified, a first outlet for purified liq. and a second outlet for effluent liq., and a liq. storage unit for storing purified liq. from the first outlet from the purifcn. unit, as well as a cooling unit for cooling the purified liq. stored in the storage unit with liberation of heat, with an inlet which is connected with the second inlet of the liq. purifcn. unit for supply of effluent liq. out of the liq. purifcn. unit for taking up the heat liberated by the cooling of the purified liq., whereby the effluent liq. is heated, and an outlet for removing the heated effluent liq.
Patent OA-11019-A (OA)
Title: Electrical logging of a laminated earth formation
Inventor: BEARD DAVID R
IPC: G01V3/28
Filed: 1998-12-31
Abstract: A method of determining an electric conductivity of an earth formation formed of different earth layers (3, 5, 7) which earth formation is penetrated by a wellbore (1) containing a wellbore fluid, is provided. The method comprises lowering an induction logging tool (9) into the wellbore (1) to a location surrounding by a selected one of the earth layers (3, 5, 7), the tool (9) comprising magnetic field transmitter means (18) for inducing magnetic fields of different frequencies in said earth formation, and magnetic field receiver means (19) for receiving response magnetic fields and for providing a signal representative of each response magnetic field, at least one of the transmitter means (18) and the receiver means (19) having a plurality of magnetic dipole moments (26, 28) in mutually orthogonal directions. At least two of said different frequencies are selected, and for each selected frequency, the transmitter means (18) is operated so as to induce a magnetic field in the earth formation and the receive means (19) is operated so as to provide a signal representing a response magnetic field, wherein said at least one of the transmitter (18) and receiver means (19) is operated in said mutually orthogonal directions. The signals are combined in a manner so as to create a combined signal having a reduced dependency on the electric conductivity in the wellbore region. The formation resistivity and the relative orientation of the logging tool with respect to the formation layering is determined from the combined signal.
Patent PT-86601-A (PT)
Inventor: BERGER MICHEL
IPC: B29C70/20
Filed: 1988-01-22
Abstract: The present invention relates to a process for the preparation of a composite material wherein the element used to reinforce the composite material is subjected to an electrostatic field induced by a high-voltage electric current, said element being then impregnated with a liquid matrix material or precursor of matrix, while still under the influence of said field, and to the composite materials obtained by carrying out said process, notably vulcanized products, in particular tires, ceramics and electrodes.