baber/WOPTO huggingface dataset:
Patent CN-1265581-A (CN)
Title: 含水杨酸的温和漂去型抗微生物液体清洁组合物
Inventor: BEERSE P W
IPC: C11D3/24
Filed: 1998-05-29
Abstract: 本发明涉及漂去型抗微生物清洁组合物,它包含清洁组合物重量约0.1%至约5.0%的抗微生物活性成分;清洁组合物重量约6%至约16%的阴离子表面活性剂,其中阴离子表面活性剂中至少约67%选自A类表面活性剂、C类表面活性剂及其混合物,其中A类与C类之比为约100∶0至约1.5∶1;清洁组合物重量约2%至约4%的给质子试剂,其生物活性指数Z大于约0.75,其中占组合物重量的约0.15%至约2%的给质子试剂为水杨酸;选自以下的温和性促进剂:占阴离子表面活性剂重量的约20%至约70%的温和性促进辅助表面活性剂,占清洁组合物重量约0.1%至约1.0%的温和性促进聚合物,及其混合物;清洁组合物重量约69.4%至约84.9%的水分;其中组合物的pH值调至大于约3.0至小于约6。本发明还涉及采用本发明所述的漂去型抗微生物清洁组合物清洁皮肤并提供抗革兰氏阴性菌延时功效的方法。
Patent CN-1254104-A (CN)
Title: 显示单元安装与连接装置
Inventor: TERAO SHINICHI
IPC: H05K3/36
Filed: 1999-11-11
Abstract: 一种显示单元安装与连接装置,包括一液晶显示单元11、一用于固定液晶显示单元11和连接于其上的一挠性底板12的固定件10、固定件10配装其上的印刷板20、安装在印刷板20上并具有多个用树脂模制的导电弹簧25的弹簧体21。挠性底板12在固定件10的外侧予以弯折,所述装置还包括用于借助于弹簧体21弹力电连接印刷板20和挠性底板12的装置,从而印刷板20和挠性底板12利用弹簧体21借助于弹力得以电连接。
Patent CN-1312921-A (CN)
Title: 为处理器控制的设备提供时钟脉冲的方法和装置
Inventor: HAUBOLD S
IPC: G06F1/32
Filed: 1999-08-02
Abstract: 在没有处理器负荷或处理器负荷极低的某些时间内,向处理器控制的设备的处理器装置输入一个低的时钟频率,该时钟频率与处理器控制的设备的实时钟内所输入的时钟频率是由同一石英产生的。
Patent CR-20130555-A (CR)
Title: Alfa glucosidasa ácida modificada con procesamiento acelerado
Inventor: CANFIELD WILLIAM M
IPC: C12N9/24
Filed: 2013-10-29
Abstract: Se proporciona un polipéptido de alfa-glucosidasa ácida humana modificada, así como métodos para producir y usar la alfa-glucosidasa ácida humana modificada para tratar una glucogenosis.
Patent CR-20160593-A (CR)
Inventor: LIN-SCHMMIT XIEFAN
IPC: C12N15/00
Filed: 2015-06-22
Abstract: La presente invención se relaciona con anticuerpos que neutralizan ampliamente al interferón- alfa e interferón- omega, polinucleótidos que codifican los anticuerpos o fragmentos, y los métodos de preparación y sus usos.
Patent CR-20180200-A (CR)
Title: Ciano tienotriazolpirazinas y usos de las mismas
Inventor: BUCKLEY DENNIS;
IPC: C07D495/14
Filed: 2016-09-09
Abstract: La presente invención proporciona compuestos de fórmula (I) y (II) y sales farmacéuticamente aceptables de los mismos. Los compuestos de fórmula (I) y (II) son moléculas de unión a bromodominios y/o proteínas que contienen bromodominio (por ejemplo, proteínas bromo y extra terminal (BET)). También se proporcionan métodos, usos y kits que usan los compuestos y las composiciones farmacéuticas para inhibir la actividad (por ejemplo, la actividad aumentada) de los bromodominios y/o las proteínas que contienen bromodominio y para tratar y/o prevenir en un sujeto enfermedades asociadas con los bromodominios o las proteínas que contienen bromodominio (por ejemplo, enfermedades proliferativas, enfermedades cardiovasculares, infecciones víricas, enfermedades fibróticas, enfermedades metabólicas, enfermedades endocrinas y envenenamiento por radiación). Los compuestos, las composiciones farmacéuticas y los kits también son útiles para la contracepción masculina
Patent CR-20180578-A (CR)
Title: Derivados de carbonucleósidos sustituidos útiles como agentes antineoplásicos
Inventor: MCTIGUE MICHELE ANN;
IPC: C07D519/00
Filed: 2017-06-03
Abstract: Los compuestos de la Fórmula general procesos para la preparación de estos compuestos, composiciones que contienen estos compuestos y los usos de estos compuestos
Patent CR-20200169-A (CR)
Title: Novel macrocyclic derivatives, process for preparing same and pharmaceutical compositions containing same
Inventor: DURAND DIDIER
IPC: C07D498/22
Filed: 2018-10-24
Abstract: <p>A compound of formula (I): in which A1, A2, Ra, Rb, Rc, Rd, R3, R4, X, Y and G are as defined in the description, and the use thereof in the production of medicaments.</p>
Patent CR-20200292-A (CR)
Title: Aparato potenciador hidrico
Inventor: YUNG LI ALEXANDER
IPC: F17D1/14
Filed: 2020-07-06
Abstract: <p>El Potenciador Hídrico es un aparato que eleva un líquido más de 3 metros, donde se encuentra la camara de diferencia de presión (6), compuesto por dos o más ventiladores (2) y un sello polímero o de arena (5). Dentro de la cámara de diferencia de presión (6) se extrae el aire (3) por medio de los ventiladores extractores (2), al ser menor la presión se succiona el líquido a través del tubo ascendente (1); para evitar que se succione a través del tubo de salida (7) se coloca un sello polímero o de arena (5), de modo tal que sólo salga el líquido</p>
Patent EC-SP099703-A (EC)
Title: Reactor de oxigeno a presion para la operación continua
Inventor: GALLEGOS MORALES FRANKLIN SEBASTIAN
IPC: C22B11/08
Filed: 2009-10-23
Abstract: Un aparato que utilizado oxigeno a presión reduce el tiempo de lixiviación del oro en el mineral de 16 horas a 8 minutos al mismo tiempo que mejora la recuperación del mismo hasta un 98%
Patent EC-SP900690-A (EC)
Title: Compuestos de macrolida
Inventor: BOECK LAVERNE DWAINE
IPC: A01N43/22
Filed: 1990-10-30
Abstract: Se refiere a un producto utilizado en el control de insectos, especialmente lepidópteros, tales como el gusano soldador del sur y dipteros como la mosca de los establos y el mosquito entre los principales.
Patent FI-20070016-A (FI)
Inventor: LINDGREN TOMMY
IPC: C03B37/05
Filed: 2007-01-09
Abstract: The invention relates to an arrangement and a method for the manufacture of mineral fibres. The system comprises a fiberising apparatus, which has at least two, typically three or more, fiberising rotors which rotate around a horizontal or nearly horizontal axis. Mineral melt is fed to the mantle surface of the first rotor, which mineral melt is thrown from the mantle surface of the first rotor to the mantle surface of the second rotor, and thence onwards to the mantle surface of a possible subsequent rotor, whereby mineral fibres are formed on the active mantle surfaces of the rotors. The blow-off means are arranged to surround the active mantle surfaces of the rotors of the fiberising apparatus and they are arranged in the immediate vicinity of the active mantle surfaces for blowing the fibres from the mantle surfaces towards a collecting member, which is arranged at a distance from the fiberising apparatus. Ready-made fibres are added with the addition means for ready-made fibres to the mass of the fresh fibres formed on the mantle surfaces, and binder is added with binder means to the mixture of fresh fibres formed on the mantle surfaces and ready-made fibres. The binder means are arranged in the immediate vicinity of the blow-off means and the addition means for the ready-made fibres are arranged on the side of the binder means, which is away from the blow-off means.
Patent FI-20125217-A (FI)
Inventor: KORHONEN JUHANI
IPC: F03B17/00
Filed: 2012-02-27
Abstract: An apparatus comprises an axle (102) and at least one counterweight system (100), each comprising two weight systems (10, 20), of which the first weight system (10) comprises a closed cylinder (104) and therein a weight structure (108) and a movable fluid (120, 122) and the second weight system (20) comprises a weight structure (1 10), and a transmission mechanism (112) between the weight systems (10, 20). One weight structure (108, 110) weighs more than the other weight structure (110). As the heavier weight structure (108, 110) goes downwardly by the effect of gravitation, the transmission mechanism is arranged to transfer the other weight structure (110, 108) upwardly and the movable fluid (120, 122) is arranged to shift vertically inside the cylinder (104) due to the vertical movement of the heavier weight structure and through the shift to produce a torque with respect to the axle (102), which is arranged to provide rotation in the counterweight system (100) with respect to the axle (102).
Patent GB-1050232-A (GB)
IPC: G03B1/66
Abstract: 1,050,232. Photographic roll-film cameras. EASTMAN KODAK CO. Feb.13,: 1964 [Feb.25, 1963], No.6025/64. Heading G2A. [Also in Division F2] In an arrangement for controlling the drive to film winding means, preferably for positioning perforated film in the exposure aperture of a rollfilm camera, a perforation sensing member 26 retains a drive locking member 29 until the former senses a perforation, whereupon the member 29 is released to interrupt the drive As shown, the film is wound across the exposure aperture by a constant torsion spring motor (Fig. 5, see also Division F2). The motor spring 63 is transferred from a storage drum 64 to a driving drum 65, on pulling a metal tape 60 out of the camera. Drum 65 drives gear wheels 85 and 88. Gear train 85, 86, 87 and 36 drives fan 34 and governor assembly 37, 38. Gear train 88, 18 drives take-up spool 17. The motor continues to wind the film unless or until held by the engagement of end 125 of lever 29 with one of lugs 33 or fan 34. Mechanism for arresting film advance : On depressing the shutter release button 13, lug 90 coacts with fan 34 to free lever 29 which is immediately turned about its pivot 30, by ballcrank 41, to trap its opposite end in step 51 of latch 46. End 125 is accordingly held clear of the path of lugs 33. The last part of the downward motion of button 13 releases the camera shutter. As soon as lug 90 clears the fan 34, on the return movement of button 13, the spring motor starts to wind the film on. As the film F starts to move, lever 26 is turned about its pivot 27 against the action of tension spring 28 by the coaction of the end of perforation P against an inclined edge of end 25. The opposite end of lever 26 releases latch 46 and catches lever 29, as it is moved by tension spring 31, by means of lug 57. The film advance continues while the end 25 rides on the surface of the film F. As the end 25 drops into the next perforation, the consequent movement of lever 26 brings lug 57 over the edge of step 58 and allows lever 29 to arrest fan 34 and the film advance. Mechanisms operated by unlatching the camera back: After the last exposure of the roll, the motor continues to wind spool 17 until stopped by the movement of lever 26 as it senses the trailing end of the backing strip. On sliding plate 120 Fig. 6, (not shown) downwardly, by means of knob 15, inclined edge 121 engages pin 122 to drive slider 123 to the right so that arm 124 disengages end 125 from lugs 33 and allows. the motor to run down. Plate 120 also pivots lever 126 about fulcrum 127 to lift shaft 19 and disengages drive member 16 from spool 17. Finally lug 130 strikes latch 131 and moves it out of engagement with the latch plate 134 of the camera back 14.
Patent GB-1052194-A (GB)
IPC: G01N27/24
Abstract: 1,052,194. Testing insulation, detecting flaws in materials electrically. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. May 8, 1964 [June 18, 1963], No. 24211/63. Headings G1N and G1U. In a method of detecting flaws in insulating material, relative movement is produced between the material and two coplanar conductive members between which exists a sensible capacitance, the members being positioned sufficiently close to the material for a flaw to occasion a change in the value of this capacitance as it moves past. The two coplanar conductive members may consist of plates 7 and 8 secured to an insulating member 5 carried at the end of a rotor 1. A capacitance C1 exists between the plates, which are held in close proximity to the material M under test. The rotor carries conductive layers such as 11, 16, and can move inside a stator 2 which carries conductive layers such as 12, 14, 15. These layers and the gap therebetween define capacitances C2, C3 and C4, and the capacitance C1 is connected to these capacitances so as to form a network as shown in Fig. 2, the stator electrode of capacitance C3 being connected to earth. In use, a low audio frequency signal is applied to the stator electrode of C2 and an output signal is taken from C4. The rotor is rotated with the members 6 and 7 in close proximity to the insulating material under test. A flaw causing a change in capacity of Cl will be indicated as a modulation of the output signal from C4. The function of the coupling capacitors C2, C3, C4 is to avoid spurious modulation of the output signal which might be caused by eccentricity between the rotor 1 and stator 2.
Patent GB-1053996-A (GB)
IPC: C07F7/22
Abstract: 1,053,996. Organotin halides. NITTO CHEMICAL INDUSTRIAL CO. Ltd. April 15. 1964 [April 18, 1963; April 19, 1963; May 7, 1963 (2); Aug. 19, 1963; Aug. 21, 1963], No. 15676/64. Heading C2J. Alkyl tin halides, wherein the alkyl group has one to twelve carbon atoms, are prepared by the reaction of an alkyl halide with tin in the presence of (a) at least one nitrogen-containing organic compound, phosphorus-containing organic compound, ammonia, hydrazine, hydroxylamine or a salt thereof, and (b) at least one iodine-containing compound or iodine. The nitrogen-containing organic compound may be an aliphatic or aromatic amine, which may bear inert substituents, a nitrogen-containing heterocyclic compound, or a salt thereof with a hydrogen halide, oxy-acid, organic acid or organic halide. The organic phosphorus compound may be a phosphine, halophosphine, phosphonium halide, halophosphonium halide, phosphite, halophosphite, thiophosphite, amidophosphite, phosphine oxide, phosphate, thiophosphate, phosphonyl halide, phosphonous acid, phosphoric acid or phosphinous acid. The iodine-containing compound may be an iodine halide, inorganic or organic iodide. When component (a) contains iodine it also acts as component (b). Component (b) is also unnecessary when the starting halide is an iodide. The amount of component (a) may be 0À001-0À5 mole per g. of tin, and mole of component (b) 0À002-0À01 mole per g. tin. The mole ratio of alkyl halide to tin may be from 2 to 3. Reaction may be carried out in a sealed or open vessel at 100-200 C. with agitation, and is complete in 2-10 hours, the iodides being most readily formed. Mono-, di- and tri-alkyl tin halides may be separated by conventional methods.
Patent GB-1226026-A (GB)
IPC: A23L3/00
Filed: 1968-11-05
Abstract: 1,226,026. Apparatus for sterilizing &c. filled containers. STORK AMSTERDAM N.V. 5 Nov., 1968 [6 Nov., 1967], No. 52323/68. Heading A2D. [Also in Division B8] An apparatus for the pasteurization or sterilization of commodities packed in containers, which comprises a treatment space 1 and a conveyer 2 consisting of an endless belt or chain provided with carriers 9 for the containers, a substantially continuous drive being connected to the conveyer 2, the latter passing through a loading and/or unloading station 16, 17 situated outside the treatment space, is characterized in that driving means are provided at the location of the station 16, 17 with which the conveyer 2 can be periodically slowed down or brought to a standstill and subsequently advanced at a faster rate, and in that on each side of the station 16, 17 means are provided for forming and temporarily accumulating, and for giving out again, downwardly hanging loops of the conveyer 2. The main continuous drive to the conveyer 2 is applied through one or more of sprockets 11. Driving wheels 10, in conjunction with guide wheels 15 hanging in loops 14 of the conveyer 2, control the travel of the latter through the station 16, 17 and provide for its temporary accumulation. The carriers 9, Fig. 2, are each provided with four compartments A-D for accommodating rows of containers, and are pivotally supported on the conveyer 2, i.e. on chains 8, so that they can be rotated to enable each compartment to be unloaded (and loaded) in turn when in its lowermost position. Unloading is effected by an endless belt or chain positioned below the compartment C to be unloaded, an upstanding abutment pushing the containers out of the carrier 9. Loading is effected by a similar endless conveyer with the aid of a bridge plate.
Patent GB-1228666-A (GB)
IPC: B44F9/04
Filed: 1969-05-05
Abstract: 1,228,666. Moulding artificial stone articles. J. L. HILLS. 5 May, 1969 [3 July, 1968], No. 22899/69. Heading B5A. Artificial stone articles are made by applying differently coloured mixtures of resin and powdered stone in a desired pattern to a base sheet, applying the sheet, pattern side down, on to a mould, removing the sheet and allowing the mixtures to harden on the mould. In the example, a series of overlapping waxed or plastics base sheets supported on a table are covered by alternate strips of different coloured mixtures and the table vibrated to fuse the strips to the desired degree. The covered sheets are then transferred one-by-one to a vibrated male mould 6 where the base sheets are removed. A female mould 7 is then superimposed and the space between the deposited mixture and the female mould filled with a compatible resinstone matrix, the whole then being allowed to garden. The resin may be a polyester.
Patent GB-1228997-A (GB)
IPC: F16D3/04
Filed: 1968-08-08
Abstract: 1,228,997. Shaft couplings. G. B. SOAR. 22 May, 1969 [8 Aug., 1968], No. 37888/68. Heading F2U. In an Oldham-type coupling the parallel sides of the tenons or tongues 10a, 10b of the floating disc C are engaged by opposed spaced pairs of bearing rollers 6a. . . 6d and 7a . . . 7d, one of each pair being mounted eccentrically with respect to a carrier spindle 5a, 5b on the driving and driven discs A, B, to enable backlash to be taken up by rotation of the appropriate spindles which are provided with square end portions 11 for the purpose.
Patent GB-1229889-A (GB)
IPC: C08G59/50
Filed: 1968-06-21
Abstract: 1,229,889. Laminates. DYNAMIT NOBEL A.G. 21 June, 1968 [22 June, 1967], No. 29858/68. Heading B5N. [Also in Division C3] Glass fibre fabrics used in the preparation of laminates are impregnated with a composition comprising an epoxy resin and as hardener therefor a mixture of amines which comprise: (a) from 60-95 equivalent per cent of an optionally alkyl substituted mononuclear aromatic diamine or a polynuclear aromatic diamine containing fused rings or rings linked by a direct bond or through alkylene groups, e.g. a phenylene, tolylene or naphthylene diamine or 4,4<SP>1</SP>- diaminodiphenylmethane (I); and (b) from 5 to 40 equivalent per cent of a slower reacting diamine which is a polynuclear aromatic diamine containing a bridging sulphone group, e.g. 4,4-diaminodiphenylsulphone (II), or a halogenated polynuclear aromatic diamine, e.g. 1,4-diamino-2,3,5-trichlorobenzene, di-(4- amino - 3 - chlorophenyl)methane or di - (4- amino - 3,5 - dichlorophenyl)methane. In an example a diglycidyl ether of bisphenol A (102 kg) is mixed with I (12À7 kg.), II (4 kg.) and dissolved in 51 kg. of 2-butanone. This mixture is used to impregnate glass cloth to a resin content of 35% by wt. Stacks of dried impregnated sheets are laminated by heating at 175‹ C. under 60 kg./cm.<SP>2</SP> for 40 minutes. Copper faced laminates may also be prepared by contacting the uncured stack of sheets with an oxidized surface of copper foil.
Patent GB-1230818-A (GB)
IPC: C07D295/21
Filed: 1968-06-24
Abstract: 1,230,818. Dithiocarbamates. CIBA-GEIGY A.G. 24 June, 1968 [22 June, 1967 ; 23 June, 1967 ; 28 June, 1967 ; 14 July 1967 ; 16 Feb., 1968], No. 29962/68. Heading C2C. [Also in Division A5] Dithiocarbamates having the general formula wherein R 1  denotes alkyl or alkenyl of 3-4 carbons, R 1  being branched in the latter case, R 2  represents alkyl of 2-4 carbons or alkenyl of 3-4 carbons, R 2  being branched if it contains 4 carbons, or wherein R 1  and R 2  together with the nitrogen atom to which they are bonded represent a 5-7 membered ring with a total of at most 7 carbon atoms and R 3  represents ethyl, propyl, n-butyl or iso-butyl are prepared by reacting an amine of formula R 1 R 2 NH with carbon disulphide and a tertiary amine or an alkali hydroxide and further reacting the resulting salt of the acid of formula with a halide of formula R 3 Hal. Reference has been directed by the Comptroller to Specification 805,500.
Patent GB-1233052-A (GB)
IPC: G11C21/02
Filed: 1968-06-07
Abstract: 1,233,052. Counters; delay line data stores. SOC., ITALIANA TELECOMUNICAZIONI SIEMENS S.p.A. 7 June, 1968 [9 June, 1967], No. 27300/68. Headings G4A and G4C. A memory and counting circuit comprises four dynamic memories (magnetostrictive delay lines) in parallel, and logic circuitry permitting a 4-bit number in the memories (one bit per memory) to be recirculated with or without addition or subtraction of 1 or to be replaced by 0000 or by 0001 or by a new 4-bit number.
Patent GB-1251564-A (GB)
IPC: F16G3/04
Filed: 1969-10-29
Abstract: 1,251,564. Belt fasteners. NILOS G.m.b.H. FORDERBAND-AUSRUSTUNG. 29 Oct., 1969 [8 Nov., 1968], No. 52879/69. Heading F2Q. A wire hook type belt fastener comprises a longer and a shorter double hook 2, 3, each comprising side limbs 2b, 3b joined together by a transverse portion 2a, 3a over which the spike ends 2c, 3c of the limbs are bent when the fastener is secured to a belt, the hooks 2, 3 being secured together with their limbs 2b, 3b in contact, to form a quadruple hook. In Figs. 2, 3, the respective limbs 2b, 3b lie side by side so that they all lie flat on the belt surface. In Fig. 6, the limbs 12b of the longer double hook lie on top of the limbs 13b of the shorter hook when the fastener is secured to the belt.
Patent GB-1253243-A (GB)
IPC: A63H17/26
Filed: 1969-10-07
Abstract: 1,253,243. Wheel mounting arrangement. MATTEL Inc. 7 Oct., 1969 [20 Nov., 1968], No. 49128/69. Heading A6S. A wheel mounting arrangement for a toy vehicle is shown in Fig. 6. A bearing 52 is positioned on the end 48A of the axle shaft which has a swaged knob 62A with a flat or slightly concave outer surface 70. The bearings are made of a synthetic polymer so that they are resilient and are maintained on the axle by the swaged ends. The wheel 26A has a protuberance 72 that can bear against the centre of the knob to provide a thrust bearing of low friction and limit axial displacement of the wheel. In addition the wheel 26A may be provided with a narrow rim portion 74 to reduce friction with the road surface and yet maintain the appearance of a wide tread tyre. The wide portion 78 of the tyre may be provided with a slight taper so that even if the wheel is tilted the outer rim 80 is unlikely to contact the roadway. The wheels are also made of resilient material and are snapped into position over the bearings. The peripheral surface of the bearing is concave in order to retain the wheels firmly thereon.
Patent GB-1256568-A (GB)
IPC: F16G3/08
Filed: 1969-02-25
Abstract: 1,256,568. Belt fasteners. HAYDEN-NILOS Ltd. 24 Feb., 1970 [25 Feb., 1969], No. 10012/69. Heading F2Q.  A conveyer belt fastener comprises a pair of plates 1, each of which is formed of two laminations 2, 3 of substantially rectangular shape but with rounded corners. A neck 6 is formed by recesses 5 to encourage flexing of the laminations at mid length. The ends of laminations 2 have extensions 8 which are bent around corresponding ends of laminations 3. The fastener is secured to adjacent belt ends by staples 11 passing through holes 12 in the laminations. The recesses 5 and holes 17 facilitate the location of the laminations in a beltfastening machine.
Patent GB-1257701-A (GB)
IPC: F16L59/06
Filed: 1969-01-15
Abstract: 1,257,701. Pipes. VACUUM BARRIER CORP. 15 Jan., 1969 [15 Jan., 1968], No. 2321/69. Heading F2P. Tubes 10 and 12 of a cryogenic fluid line or an electric cable construction are concentrically located by a metal or plastics ribbon 20 which is twisted about its axis and helically wound about the inner tube. The ribbon is twisted 180 degrees for each quarter revolution of its helical winding about tube 10 so that side edges 21, 22 of the ribbon alternatively contact the tube at every 90 degrees of the ribbon revolution about the tube. As shown, the tubes, which may be of copper, are helically corrugated, the helices of the ribbon and tube corrugations being on the opposite hands. The space between the tubes may be evacuated. One or both edges of the ribbon may be notched, Figs. 3-5 (not shown), to stabilize the wound ribbon. The inner tube may be reinforced with a wire braid 50, Figs. 6 and 7 (not shown), and one or both tubes may include insulating layers 52, 54, comprising alternative layers of aluminium-coated plastics film and fibre glass sheeting. More than one ribbon may be provided.