baber/WOPTO huggingface dataset:
Patent CR-20150518-A (CR)
Title: Composiciones herbicidas que comprenden ácido 4-amino-3-cloro-5-fluoro-6-(4-cloro-2-fluoro-3-metoxifenil)piridin-2-carboxílico o uno de sus derivados y fungicidas
Inventor: MANN RICHARD K
IPC: A01N43/24
Filed: 2015-10-02
Abstract: Las composiciones y métodos proporcionados en la presente controlan la vegetación no deseada, por ejemplo, en arroz sembrado directamente, sembrado en agua y trasplantado, cereales, trigo, cebada, avena, centeno, sorgo, maíz, caña de azúcar, girasol, colza oleaginosa, canola, remolacha, soja, algodón, piña, pasturas, praderas, pastizales, tierra de barbechos, césped, árboles y huertos de vides, cultivos de plantación, vegetales, control de vegetación industrial (IVM) y derechos de paso (ROW).
Patent CR-20160448-A (CR)
Title: Nuevos derivados de piridina
Inventor: NETTEKOVEN MATTHIAS
IPC: C07D417/06
Filed: 2015-04-01
Abstract: La invención se refiere a un compuesto de fórmula (I) en la que A y R1 a R4 se definen como en la descripción y en las reivindicaciones. El compuesto de fórmula (I) puede usarse como un medicamento.
Patent CR-20190122-A (CR)
Title: Formulations containing fluopyram for the control of nematodes
Inventor: Fürsch Helmut
IPC: A01P5/00
Filed: 2017-08-31
Abstract: Formulations containing fluopyram for the control of nematodes The present invention relates to suspension concentrate formulations of N-{[3-chloro-5-(trifluoromethyl)-2-pyridinyl]-ethyl}-2,6 dichlorobenzamide (fluopyram), a process for the preparation of these formulations and their use for controlling nematodes.La presente invención se refiere a nuevas formulaciones de N¿{[3¿cloro¿5¿(trifluorometil)¿2¿piridinil]¿etil}¿2,6 diclorobenzamida (fluopiram), un proceso para la preparación de estas formulaciones y su utilización para controlar nemátodos.
Patent EC-SP003505-A (EC)
Title: Derivados de 4-fenil- pirimidina
Inventor: GALLEY GUIDO
IPC: C07D239/42
Filed: 2000-05-31
Abstract: La presente invención se refiere a compuestos de la fórmula general (gráfico), en donde R1 es hidrógeno ó halógeno; R2 es hidrógeno, halógeno, alquilo inferior o alcoxilo inferior; R1 y R2 pueden ser junto con los dos átomos de carbono del anillo -CH=CH-CH=CH-, R3 es halógeno, trifluorometilo, alquilo inferior ó alcoxilo inferior; R4/R4¿son independientemente uno de otro hidrógeno o alquilo inferior; R5 es alquilo inferior, alcoxilo inferior, amino, fenilo, hidroxi-alquilo inferior, ciano-alquilo inferior, carbamoílo-alquilo inferior, piridilo, pirimidilo, (CH2)n -piperazinilo, el cual se encuentra sustituido opcionalmente por uno o dos grupos alquilo inferior ó por hidroxi-alquilo inferior, -(CH2)n-morfolino, (CH2)n-piperidinilo, -(CH2)n+1-imidazolilo, alquilo inferior-sulfanilo, alquilo inferior-sulfonilo, bencilamino -NH-(CH2)n+1N(R4¿¿)2, (CH2)n+1N(R4¿¿)2, -O-(CH2)n+1-morfolino, -O-(CH2)n+1-piperidinilo ó -O-(CH2)n+1N(R4¿¿)2, en donde R4 es hidrógeno ó alquilo inferior; y n es0-2; X es -C(O)N(R4¿¿) - ó -N(R4¿¿)C(O)-; y sales derivadas de una adición ácida farmacéuticamente aceptables. Se ha demostrado que los compuestos anteriormente mencionados tienen una buena afinidad por el receptor de NK-1 y por lo tanto, pueden ser utilizados para el tratamiento de enfermedades relacionadas con este receptor.
Patent EC-SP003545-A (EC)
Title: Composicion para la dosificacion oral de disolucion instantanea
Inventor: KOTHARI SANJEEV H
IPC: A01N25/08
Filed: 2000-06-27
Abstract: Con ayuda del dispositivo (1) pueden fabricarse pelets (4) previstos como soportes de sustancias medicamentosas en un tamaño permanentemente casi igual y con una reproductibilidad constante.
Patent EC-SP003711-A (EC)
Title: Inhibidores sglt2 de glucocidos de c- arilo y metodo
Inventor: ELLSWORTH BRUCE
IPC: C07D207/09
Filed: 2000-10-12
Abstract: Se proporciona compuestos que inhiben el SGLT2, que tiene la fórmula (gráfico), en donde R1, R2 y R2a son independientemente hidrógeno, OH, OR5, alquilo, CF3, OCHF2, OCF3, SR5i o halógeno, o dos de R1, R2 y R2a junto con los carbonos a los cuales están unidos, pueden formar un carbocíclo o heterociclo de cinco, seis o siete elementos, deseados; R3 y R4 son independientemente hidrógeno, OH, OR5a, Oarilo, OCH2 arilo, alquilo inferior, cicloalquilo, CF3, -OCHF2, -OCF3, halógeno, -CN, CO2R5b, -CO2H, -COR6b, -CH(OH)R6c, -CH(OR5b)R6d, CONR6R6a, -NHCOR5c, -NHSO2R5d, -NHSO2arilo, arilo, SR5c, -SOR5f, -SO2R5g, -SO2 arilo o un heterociclo de cinco, seis o siete elementos ó R3 y R4 junto con los carbonos a los cuales están unidos forman un carbocíclo o heterociclo de cinco, seis o siete elementos deseados; R5, R5a, R5b, R5c, R5d, R5e, R5f, R5g, R5h, R5i son independientemente alquilo inferior; R6, R6a, R6b, R6c y R6d, son independientemente hidrógeno, alquilo, arilo, alquilarilo, o cicloalquilo o R6 y R6a junto con el nitrógeno al cual están unidos, forman un heterociclo de cinco, seis o siete elementos deseados; A es O, S, NH o (CH2)n en donde n es 0-3 también proporciona el tratamiento de la diabetes y padecimientos relacionados empleando una cantidad que inhibe el SGLT2 del compuesto anterior solo o en combinación con otro agente antidiabético u otro agente terapéutico.
Patent EC-SP034687-A (EC)
Title: Profarmacos de aminoacidos excitadores
Inventor: PEDREGAL TERCERO CONCEPCION
IPC: A61K38/04
Filed: 2003-07-11
Abstract: Un compuesto de fórmula I: en la que, R11, R15 Y R17 son hidrógeno; o una sal farmacéuticamente aceptable del mismo (Grafico)
Patent EC-SP034706-A (EC)
Title: Un producto de leche que puede esfumarse con agitacion
Inventor: VAGHELA MADANSINH N
IPC: A23L9/20
Filed: 2003-07-25
Abstract: La invención se refiere a un producto de leche que contiene desde o hasta 40% de grasa, desde 5 hasta 23% de sólido no graso, otros ingredientes y agua, producto que puede ser espumado a temperatura ambiente ya sea por agitación o con un dispositivo espumador, conteniendo además este producto una mezcla de al menos dos emulsificantes y un estabilizador de espuma.
Patent EC-SP056014-A (EC)
Title: MOLÉCULAS DE ANTICUERPOS QUE TIENEN ESPECIFICIDAD PARA IL-1ß HUMANA
Inventor: LAWSON ALASTAIR DAVID GRIFFITHS
IPC: A61K47/48
Filed: 2005-09-13
Abstract: La invención se refiere a una molécula de anticuerpo que tiene especificidad para determinantes antigénicos de IL-1ß, usos terapéuticos de la molécula de anticuerpo y métodos para producir dicha molécula de anticuerpo.
Patent EC-SP910752-A (EC)
Title: Dispositivo para lanzar granadas pirotecnicas
Inventor: LIVSHITS DAVID
IPC: F41A19/68
Filed: 1991-06-06
Abstract: Para lanzar sucesivamente una pluralidad de granadas pirotécnicas, una caja descartable, de compartimientos múltiples y que cumple la doble finalidad de constituir un recipiente para contener una pluralidad de granadas pirotécnicas y de servir para lanzar las granadas, estando dicha caja de compartimientos múltiples diseñada para ser acomodada dentro de una unidad de encendido que comprende una disposición de encendido eléctrico y una envoltura rígida. Se provee además una unidad de encendido para sujetar la caja y para sucesivamente lanzar las granadas desde la misma.
Patent EC-SP982445-A (EC)
Title: Filtro escenico
Inventor: RAMOS TORAL RAFAEL
IPC: B01D39/02
Filed: 1998-03-13
Abstract: La presente invención consiste en un filtro grande de esponja sintética, suave y poca compacta, a través del cual circula lentamente el agua del acuario impulsada por dos o mas bombas externas. El filtro de esponja constituye a la vez un sustrato semi-natural donde crecen organismos que ayudan en limpiar el agua y alimentan a las mascotas, sean estas peces, reptiles, anfibios o invertebrados, de agua dulce o de agua salada, con efectos terapéuticos sobre ellos, relajandolos y garantizando limpieza por un tiempo muy superior al de otros filtros.
Patent FI-20000820-A (FI)
Inventor: PIIRAINEN OLLI
IPC: H04L25/03
Filed: 2000-04-06
Abstract: A method for carrying out channel equalization in a radio receiver wherein an impulse response is estimated, noise power is determined by estimating a co-variance matrix of the noise contained in a received signal before prefiltering, and tap coefficients of prefilters and an equalizer are calculated. The method comprises determining the noise power after prefiltering by estimating a noise covariance matrix, after which input signals of the channel equalizer are weighted by weighting coefficients obtained from the noise covariance estimation.
Patent FI-20011954-A (FI)
Inventor: KEMPPAINEN PEKKA
IPC: C21D11/00
Filed: 2001-10-08
Abstract: The invention relates to a heat treatment method, in which method an object/objects is/are heat-treated, in which method the heat treatment takes places in a heat treatment furnace or the like. In the method, in connection with heat treatment, heat transfer of the object/objects is controlled by adjusting the rate of change of the temperature of the object/objects being heat-treated to the desired level in different heat treatment phases.
Patent FI-20030086-A (FI)
Inventor: NYKOPP JUHA
IPC: H04W64/00
Filed: 2003-01-21
Abstract: The method involves collecting messages belonging to a preset message set from predetermined location areas of a mobile network. A terminal and the mobile network communicate in border areas of the preset location areas using a message of the preset message set. A subscriber identifier is fetched from a subscriber data stored in a memory, and an initial data is formed using the fetched subscriber identifiers. An independent claim is also included for a system for collecting information concerning an operation of a subscriber set.
Patent FI-20175560-A (FI)
Title: Coating structure, sheet-like product and its use
Inventor: TURKKI TARJA
IPC: D21H27/10
Filed: 2017-06-15
Abstract: The present invention relates to a coating structure for a sheet-like substrate comprising lignocellulosic fibres. The structure comprises at least one pre-coat layer, which comprises (a) at least 70 weight-% of a first styrene (meth)acrylate copolymer which is polymerised in the presence of a stabiliser, and which has a glass transition temperature Tg ≤ 20 °C, preferably ≤ 10 °C, (b) ≤ 30 weight-% of inorganic platy mineral particles, such as kaolin or talc, and (c) 0.01 – 2 weight-% of at least one first thickener. The coating structure further comprises a top coat layer, which comprises (a) at least 50 weight-% of a second styrene (meth)acrylate copolymer which is polymerised in the presence of a stabiliser, and which has a glass transition temperature Tg ≤ 20 °C, preferably ≤ 10 °C, (b) ≤ 30 weight-% of inorganic mineral particles, (c) 0.01 – 5 weight-% of at least one second thickener, and (d) 0.5 – 30 weight-% of an antiblocking agent. The invention further relates to a sheet-like product comprising a substrate of lignocellulosic fibres and having a first and second parallel large surface, which substrate is coated with a coating structure of the invention.
Patent GB-1023297-A (GB)
IPC: G11B5/706
Abstract: 1,023,297. Magnetic material. GEORGIA KAOLIN CO. March 26, 1964 [Oct. 2, 1963], No. 13063/64. Heading C1A. [Also in Division H1] A process for producing a magnetic material comprises mixing an, aqueous slurry of an iron oxide with a soap solution, precipitating the soap by addition of a salt having a cation which reacts with the soap to form an insoluble soap, separating, drying and heating the solids to a temperature, e.g. 100‹ C., at which an oxidation reaction occurs and, on completion of the reaction, recovering the material. The soap used may be a water-soluble fatty acid soap. Stoichiometric quantities of soap and salt are added and the ratio of salt to iron oxide is preferably 1: 24. The salt added may be the sulphate or chloride of Al, Co, Cu, Fe, Pb, Mg, Mn, Ni, Zn and preferably of Ca, Sr and Ba. Examples using hydrated Fe 2 O 3 , αFeOOH, #FeOOH and αFe E O 3 , as starting materials are given.
Patent GB-1050382-A (GB)
IPC: H02M7/515
Abstract: 1,050,382. Inverting. ALLM€NNA SVENSKA ELEKTRISKA A.B. March 17, 1964 [March 18, 1963], No. 11181/64. Heading H2F. In an inverter of the type having at least one pair of thyristors 4,5 connected across the D.C. lines in series through a centre tapped commutating inductance 6, capacitors 7, 8 forming resonant circuits with the inductance 6 and reverse current diodes 9, 10 there is provided a transformer 25 whose secondary is connected to the supply through diodes 27, 28 and whose primary is in the path both of reverse current flow and of the current which flows to discharge the commutating inductance after commutation. In this way power stored in the commutating inductance after the moment of turn off, as well as reverse power from the load, is returned to the supply. A centre tapped supply is not required, as in known circuits (Fig. 1, not shown). Single phase (Fig. 3, not shown) and bridge connected arrangements are disclosed.
Patent GB-1051350-A (GB)
IPC: C22C1/02
Abstract: 1,051,350. Refining alloys. WESTINGHOUSE ELECTRIC CORPORATION. Nov.16, 1965 [Dec. 24, 1964], No.48613/65. Heading C7D. Fe, Ni and Fe-Ni alloys having melting points below 1500‹C are purified by treating them in the molten state with Ca, lowering the temperature of the Ca-containing melt to below 1755‹K, exposing it at this temperature to an oxidizing atmosphere and pouring. The melt may be covered with a slag to absorb the Ca and Ca-S compounds. The temperature reduction and oxidation steps may be effected by pouring the molten alloy in air into a ladle, where it is allowed to cool, and then pouring it back again. Any oxygen picked up by this reladling may be removed by a second treatment with Ca.
Patent GB-1052518-A (GB)
IPC: H01H23/00
Abstract: 1,052,518. Retractive switches. EUROPEAN ATOMIC ENERGY COMMUNITY (Euratom). April 7, 1964 [April 11, 1963], No. 14355/64. Heading H2B. A manually-operable lever 1 pivoted at 2 is rockable, e.g. clockwise as shown, to successively operate two microswitches 8, 9 (Fig. 3, not shown), mounted at slightly different distances from the lever 1, via leaf springs 5, 6, acting through flexible rollercarrying leaf springs 14, 15 on the operating push-buttons 11, 12 of the microswitches 8, 9. Similar action occurs with anticlockwise movement of lever 1 which is biased by leaf springs 5, 6 &c. to the neutral position. Several levers 20, 21, 22, each controlling four microswitches or valves in the same way as lever 1, and their associated pairs of switches 23-28, are mounted in a controller casing supported at 29 by a cable 30 (Figs. 4, 5, not shown), the switches controlling handling and hoisting apparatus such as a crane.
Patent GB-1052975-A (GB)
IPC: B21J7/24
Abstract: 1,052,975. Power hammers. MAXAM POWER Ltd. Nov. 18, 1965 [Aug. 20, 1964], No. 34073/64. Heading B3H. A pneumatically actuated impact ram comprises a piston 13 working in a cylinder 10 and magnetic restraining means 18, 30 for holding the piston whilst air pressure builds up in the cylinder. The latter is double acting and pressure air may be admitted through ports 15, 16. Piston 13 is secured to a piston rod 14 passing through a seal in the cylinder end cap 12; a spring-loaded seal 37 engages a seating face 38A at the end of the working stroke and co-operates with an adjustable bleed passage 39, 40 to cushion the stroke. An armature plate 30 loosely attached to piston 13 co-operates with an electromagnet 18, 19 to hold the piston in a retracted position with a rubber seal 33 engaging in a bore 24 whilst air pressure builds up in cylinder portion 21. An automatically or manually controlled switch de-energizes the magnet to initiate the working stroke which is performed with high acceleration when the seal 33 opens bore 24. A valve-controlled bleed passage 35, 35A, 35B is provided in the piston. Alternatively a permanent magnet can be used which releases automatically at a predetermined air pressure and may include a magnetic flux breaker to control this release pressure. The magnet may be carried by the piston with the armature fixed in the cylinder.
Patent GB-1053313-A (GB)
IPC: C09B29/20
Abstract: 1,053,313. 2-Amino--4-acetylaminobenzenesulphonic acid. CROMPTON & KNOWLES CORPORATION. April 17, 1964 [Oct. 14, 1963], No. 16076/64. Heading C2C. [Also in Division C4] The title compound is prepared by reacting 1,3-diamino-benzeneaulphonic acid with acetic anhydride.
Patent GB-1084347-A (GB)
IPC: C22C21/02
Abstract: 1,084,347. Aluminium alloys. INTERNATIONAL NICKEL Ltd. Aug. 18, 1966 [Aug. 24, 1965], No. 37083/66. Heading C7A. An alloy has the following percentage composition:- The alloy may be chill cast and heat-treated at 177-232‹C.
Patent GB-1143678-A (GB)
IPC: B24C5/04
Abstract: 1,143,678. Spray-producers. WOMAAPPARATEBAU WOLFGANG MAASBERG & CO. G.m.b.H. 17 May, 1966 [11 Dec., 1965], No. 21762/66. Heading B2F. [Also in Division Fl] A nozzle 1 suitable for use in sandblasting comprises a sand injection union 3, an outlet pipe 4 coaxial with the union 3, and a high pressure water connection 2 communicating with a space 8 within the nozzle formed by an insert 7 cooperating with the body of the nozzle, the insert 7 being provided with an annular slit or a series of holes surrounding the common axis of the pipe 4 and the union 3 and converging to form a cone of water within the pipe 4. The sand is drawn coaxially through the union 3 into the pipe 4 by the suction effect of the water passing through the slit or holes.
Patent GB-1225548-A (GB)
IPC: E05B15/02
Filed: 1968-11-06
Abstract: 1,225,548. Lock assemblies. F. LACOURSIERE. 6 Nov., 1968 [14 Nov., 1967], No. 52645/ 68. Heading E2A. A lock assembly for a door 22 includes a lock mechanism 12 having a cylindrical part with a flange 16 to project above the outside surface of said door a plate 10 mountable on the outside of the door and having a recess 14 to accommodate said flange closely an access hole 18 extending through the plate, smaller than said recess and providing access to the recess said plate being mountable on the door by means 24 inaccessible from the outside thereof.
Patent GB-1227262-A (GB)
IPC: G01C21/20
Filed: 1969-05-16
Abstract: 1,227,262. Course plotting apparatus. G.H. TE KRONNIE and K.H. VOLKERS [trading as VENOOTSCHAP ONDER FIRMA INGENIEURSBUREAU TEKRONNIE EN VOLKERS] and CHRISTIANI EN NIELSEN N.V. May 16, 1969 [May 16, 1968], No.25041/69. Heading G1F. A device for displaying on a chart 7 the course of a moving vehicle comprises a vertical spindle 2 about which three arms 3-5 bearing visual sighting means 23-25 are pivotable, a guide rail 13-15 on each arm, a chart table 6 and a model 11 of the vehicle which permits an outline of the vehicle on the same scale as the chart to be marked on the chart. The chart is provided with a scale drawing 8 of, for example, the water basin in which it is necessary to move the floating vehicle from a position 21 to a position 31. Points a, b, c corresponding to remote objects A, B, C on which the arms are sighted by observers on the vehicle are also marked on the chart. The model is mounted on a fixed arm 10 connected by a bridge 9 to a base plate 1 and is positioned so that the location on the vehicle of the observers with the device lies on the axis of the spindle 2. The lower surface of the chart table is provided with a pin at each of the points a, b, c, the pin engaging carriages slidable along the guide rails. By maintaining the sighting means 23-25 on the objects A, B, C the chart is automatically moved so that the outline of the model 11, which has holders 12 to enable pencil marks to be made on the chart, has the same position and orientation with respect to the chart as the vehicle has relative to the terrain. The model may be optically projected on to the chart.
Patent GB-1228919-A (GB)
IPC: F04D15/00
Filed: 1968-05-20
Abstract: 1,228,919. Rotary pumps. M. SCHROEDER (trading as H. SCHROEDER & CO. ) May 20, 1968 [June 1, 1967], No.23872/68. Heading F1C. [Also in Division F2] Oscillation-free operation of a rotary pump is ensured by a non-return valve arrangement in which the non-return valve 3 has a tapered skirt 3.1 which provides an increasing throttling effect as the valve moves towards its seat 1a. Additional throttling is provided by a separate throttle valve 17. In addition, a by-pass valve 7 which is linked by a lever 9 to the valves 3, 17, opens as the valve 3 closes to divert flow through a by-pass conduit 15 from a point between the valves 3, 17.
Patent GB-1230189-A (GB)
IPC: H01B3/30
Filed: 1968-09-24
Abstract: 1,230,189. Polyolefin compositions. MONSANTO CHEMICALS Ltd. 4 Sept., 1969 [24 Sept., 1968], No. 45370/68. Addition to 1,175,059. Heading C3P. Compositions for sheathing electrical cables comprising conductors and intermediate insulating coatings comprise a polyolefin and 0À15 to 0.35 weight per cent, based on the polyolefin, of an amide slip additive. The polyolefin may be a polymer of ethylene, propylene and/or butylene, and optionally minor proportions of ethylenically unsaturated nitriles, halides or esters. Specified amides are caprylamide, capramide, lauramide, myristamide, palmitamide, stearamide oleamide, linoleamide and erucamide. The compositions may also contain carbon black and antioxidants, and may be formed using a master batch. An example describes compositions of polyethylene, antioxidant and oleamide. The antioxidant may be 4,4<SP>1</SP>-thiobis-(6-t.-butyl-m-cresol), and the polymers may be cross-linked by irradiation or with peroxides.
Patent GB-1231508-A (GB)
IPC: C09D177/00
Filed: 1969-10-07
Abstract: 1,231,508. 1 - Dimethylamino - 5 - dimethylimino - 2 - cyano - 3 - chloro - 4 - azapentadiene. BYK - GULDEN LOMBERG CHEMISCHE FABRIK G.m.b.H. 7 Oct., 1969 [8 Oct., 1968], No. 49170/69. Heading C2C. Salts, the cation of which has the general formula are prepared by reacting cyanacetamide, or N - cyanoacetyl - N<SP>1</SP>,N<SP>1</SP> - dimethylformamidine, or N - [α - (dimethylaminomethylene) - cyanoacetyl] - N<SP>1</SP>,N<SP>1</SP> - dimethylformamidine with dimethyl formamide and an acid chloride, particularly POCl 3  or COCl 2 , in the presence or absence of a solvent at a temperature of - 15‹ to +100‹ C. and reacting the resultant base with an acidic compound to form a salt, e.g. the perchlorate. The preferred molar ratio of the reactants cyanacetamide, dimethyl formamide and POCl 3  is 1 : 3.75 : 3.3. Suitable solvents include halogenated aliphatic and aromatic hydrocarbons, and aromatic hydrocarbons of b.p. <150‹ C. N - cyanoacetyl - N<SP>1</SP>,N<SP>1</SP> - dimethylformamidine and N - [α - (dimethylaminomethylene) - cyanoacetyl] - N<SP>1</SP>,N<SP>1</SP> - dimethylformamidine are prepared from cyanoacetamide and dimethyl formamide dimethylacetal, using an excess of the acetal to prepare the second compound.
Patent GB-1231862-A (GB)
IPC: B61D19/00
Filed: 1968-07-19
Abstract: 1,231,862. Vehicle sliding doors. SOC. NOUVELLE DES ATELIERS DE VENISSIEUX. 19 July, 1968 [21 July, 1967], No. 34646/68. Heading B7L. To relieve the load on the vehicle roof 1 created by sliding doors 6, 7 suspended by rollers 4, 5 from upper tracks 2, 3 supported by the vehicle roof 1, the doors 6, 7 are raised by lateral movement of their bottoms into engagement with the vehicle to close the associated door openings therein, by operation of a hand lever or wheel (not shown) on a rod 12 which carries a cam 10 which pushes a corresponding claw 8 or 9 on the door 6 or 7 to clamp the door to the vehicle wall, the doors 6, 7 comprising ramp members 14, 15 respectively which engage with rollers on the vehicle as the bottoms of the doors are moved towards the vehicle.