baber/WOPTO huggingface dataset:
Patent MY-150451-A (MY)
Title: A process for hydro-stabilizing a coal liquefied oil
Inventor: ZHIHAI HU
IPC: C10G1/06
Filed: 2006-07-13
Abstract: THE PRESENT INVENTION RELATES TO A PROCESS FOR HYDRO-STABILIZING A COAL LIQUEFIED OIL, CHARACTERIZED IN FILTERING THE COAL LIQUEFIED OIL, FEEDING IT TO AN EXPANDED BED REACTOR (8), CONTACTING WITH HYDROGEN AND A HYDROREFINING CATALYST THEREIN TO HYDROREFINE THE COAL LIQUEFIED OIL, THEN GAS-LIQUID SEPARATING, FRACTIONATING THE REACTOR EFFLUENT TO OBTAIN A HYDROSTABILIZED PRODUCT OF THE COAL LIQUEFIED OIL. AN EXPANDED BED REACTOR (8) IS USED IN THE PROCESS EFFECTIVELY ALLEVIATES THE PROBLEM ASSOCIATED WITH THE RAPID INCREASE OF PRESSURE DROP IN THE REACTOR (8), INHIBITS THE UNDESIRED RAPID DEACTIVATION OF THE CATALYST AT THE INLET OF THE REACTION, AND PROLONGS THE ON-STREAM PERIOD. IN ADDITION, IT CAN REMOVE NITROGEN AND OXYGEN FROM THE COAL LIQUEFIED OIL, AND IMPROVE THE QUALITY THEREOF.
Patent MY-143379-A (MY)
Title: Dual fibre wdm bidirectional optical ring network
Inventor: KHAIRI KHARINA
IPC: H04B10/00
Filed: 2006-12-15
Abstract: DUAL FIBRE WDM BIDIRECTIONAL OPTICAL RING NETWORK S A DUAL FIBRE WDM (WAVELENGTH DIVISIONAL MULTIPLEXING) BIDIRECTIONAL OPTICAL RING NETWORK (1) IS PROVIDED WHERE ONE FIBRE (7) IS INTENDED FOR THE MAIN FIBRE RING AND ANOTHER FIBRE (9) IS PROVIDED AS A PROTECTION FIBRE RING 10 IN THE EVENT THE MAIN FIBRE RING IS RUPTURED. THE NETWORK (1) HAS A CENTRAL NODE (3) AND ONE OR MORE AR NODES (5). EACH NODE (5) COMPRISES AN OADM (OPTICAL ADD/DROP MULTIPLEXER) (25) SERIALLY OPTICALLY INTERCONNECTED WITH THE MAIN FIBRE (7). THE OADM (25) COMPRISES TWO, THREE 15 PORT CIRCULATORS (29). THE OPTICAL CIRCULATORS (29) ARE CONNECTED WITH RESPECTIVE TRANSMITTERS OR RECEIVERS (31, 35) THAT HAVE AN ASSIGNED WAVELENGTH TRANSMISSION CAPABILITY. DATA COMMUNICATION ALONG THE SELECTED WAVELENGTH CAN BE TAKEN FROM THE RESPECTIVE NODE (5) USING 20 A DSLAM (DIGITAL SUBSCRIBER LINE ACCESS MULTIPLEXER). A WAVELENGTH PASS PASSAGE (39) IS PROVIDED BETWEEN THE SERIAL INTERCONNECTION AT THE TWO OPTICAL CIRCULATORS (29) TO ALLOW PASSAGE OF WAVELENGTH CHANNELS EXCLUDING THE ASSIGNED WAVELENGTH TRANSMISSION CAPABILITY OF THE 25 RESPECTIVE TRANSMITTERS/RECEIVERS (31, 35) AT THE AR NODE. A LDC (LIGHT DETECTION CONTROLLER) (41) IS CONNECTED TO DETECT THE ABSENCE OF LIGHT AND TO SWITCH THE SERIAL INTERCONNECTION OF THE AR NODE IN WHICH IT IS COMPRISED TO BE SERIALLY INTERCONNECTED WITH THE PROTECTION FIBRE (9) 30 SO THAT BIDIRECTIONAL COMMUNICATION CAN CONTINUE TO OCCUR VIA THE PROTECTION FIBRE (9). ) @II-L (FIG. 5) 6 4 C.,
Patent MY-177106-A (MY)
Title: A method of producing cellulolytic enzyme from renewal resource by liquid state bioconversion - palm oil mill effluent
Inventor: MD ZAHANGIR ALAM
Filed: 2006-12-22
Abstract: A laboratory-scale cellulase production using palm oil mill effluent (POME) is carried out by Trichoderma harzianum in liquid state bioconversion, (LSB). The effect of the concentration of substrate and co-substrate, inoculums size, initial pH of the medium, and the agitation speed is observed for optimal production of cellulose enzyme. The statistical optimization of the physiochemical condition by polynomial regression model through the effect of linear, quadratic and polynomial interaction was carried out for cellulase production. The results showed that higher product yields would be achieved when 30?C temperature with initial pH of 4 were used along with 250 rpm agitation speed. High enzyme activity also was achieved when 2.0% (w/v) of POME, 3% (w/v) of wheat flour and 3% inoculums size were used. In optimum condition, cellulose activity reached 13.214 FPU/ml after four days fermentation. This study also involved the biodegradation of POME and the product yields in order to evaluate the bioconversion process in LSB.
Patent MY-157808-A (MY)
Title: Polymer-modified ferroconcrete
Inventor: ISMAIL MOHAMMAD BIN
IPC: C04B24/00
Filed: 2008-05-16
Abstract: POLYMER-MODIFIED FERROCONCRETE 5 A POLYMER-MODIFIED CONCRETE 300 AND POLYMER-MODIFIED FERRO-CONCRETE 302 IS PREPARED BY UTILIZING PREPACKAGED POLYMER MODIFIED MORTAR 306 AS A MODIFIER TO CONVENTIONAL CONCRETE 304. THE STRENGTH DEVELOPMENT OF PROPOSED POLYMER-RILODIFIED CONCRETE 300 IS SUBSTANTIALLY INCREASED. A RANGE OF QUANTITIES OF PREPACKAGED POLYMER MODIFIED MORTAR 10 306, WERE MIXED WITH CONVENTIONAL CONCRETE 304 OF 30 N/MM 2 STRENGTH TO PRODUCE POLYMER MODIFIED CONCRETE 300 AND THE POLYMER-MODIFIED CONCRETE 300 MOLDED OVER WIRE MESH 310 TO PRODUCE POLYMER-MODIFLED FERRO-CONCRETE 302. THE MATERIAL BEHAVIOR IN TEMIS OF COMPRESSIVE STRENGTH AND TENSILE STRENGTH, TOGETHER WITH DENSITY AND SLUMP IS IMPROVED SIGNIFICANTLY BY INCLUSION OF VARIOUS QUANTITIES AS PERCENTAGES OF PREPACKAGED 15 POLYMER MODIFIED MORTAR 306 TO CONVENTIONAL CONCRETE 304. PREPACKAGED POLYMER MODIFIED MORTAR 306 DOSAGES OF 5 TO 20RESULTED CONSIDERABLY HIGHER COMPRESSIVE AND TENSILE STRENGTH THAN THAT OF CONVENTIONAL CONCRETE 304. ON THE OTHER HAND FURTHER INCREASE IN PERCENTAGE OF PREPACKAGED POLYMER MODIFIED MORTAR 306 RESULTS IN LESS STRENGTH TO POLYINER-MODIFIED CONCRETE 300 AS WELL AS POLYMER-MODIFIED FERRO-CONCRETE 302. 20 25 30
Patent MY-197863-A (MY)
Title: A method for grading fruits and the system thereof
Inventor: KAMARUL HAWARI BIN GHAZALI
IPC: G01J3/51
Filed: 2009-09-14
Abstract: A method for grading fruits by fruit maturity index comprising: processing digital coloured image data obtained from a set of fruit samples of varying stages of maturity into red/green/blue images according to pixel values of colour component; transforming the red/green/blue images into binary images; analyzing the binary images by a morphological operation to obtain threshold values for fruit maturity index; and inspecting the fruits through a conveyor system by a camera which is linked to a computer programme to grade the fruits according to the fruit maturity index.
Patent MY-147001-A (MY)
Title: Sealing plate for use with rail clip anchoring device
Inventor: JOHN COX STEPHEN
IPC: E01B9/30
Filed: 2007-07-04
Abstract: A SEALING PLATE (2), FOR USE WITH A RAIL CLIP ANCHORING DEVICE HAVING A HEAD AND A STEM WHICH EXTENDS FROM THE HEAD INTO A CONCRETE SLEEPER WHEN THE ANCHORING DEVICE IS IN USE, WHEREIN THE PLATE IS ADAPTED FOR EXTENDING OVER THE UNDERSIDE OF THE HEAD WHEN THE STEM OF THE DEVICE IS BEING SET IN A CONCRETE SLEEPER, THEREBY TO PREVENT INGRESS OF CONCRETE INTO THE HEAD OF THE DEVICE, AND FOR BEING RETAINED ON THE SURFACE OF THE SLEEPER THEREAFTER, AND A FACE (20) OF THE PLATE WHICH IS TO BE EXPOSED ON THE SURFACE OF THE SLEEPER IS NOT ADAPTED TO RECEIVE PART OF A RAIL CLIP.
Patent MY-151384-A (MY)
Title: Measurement system for the multidimensional aerosol characterization
Inventor: MICHAEL MERTLER
IPC: G01N15/02
Filed: 2009-02-04
Abstract: A METHOD IS PROPOSED FOR CHARACTERIZING A TOTALITY OF PARTICLES. THE METHOD CAN BE USED IN PARTICULAR FOR CHARACTERING MICROPARTICULAR OR NANOPARTICULAR AEROSOLS. THE METHOD COMPRISES THE FOLLOWING STEPS: A) IN A CLASSIFICATION STEP (210), A CLASS OF THE TOTALITY IS SELECTED, WHEREIN THE PARTICLES (318) OF THE SELECTED CLASS HAVE A PRESPECIFIED MOBILITY Dm; B) IN A COUNTING STEP (212), A NUMBER N OF THE PARTICLES (318) OF THE SELECTED CLASS IS DETERMINED; C) IN A CHARGE DETERMINATION STEP (214), A CHARGE Q OF THE PARTICLES (318) OF THE SELECTED CLASS IS DETERMINED; AND D) IN AN EVALUATION STEP (218), AT LEAST ONE MORPHOLOGICAL PARAMETER IS DETERMINED FROM THE CHARGE Q, THE NUMBER N AND THE MOBILITY Dm, WHEREIN THE MORPHOLOGICAL PARAMETER COMPRISES AT LEAST ONE ITEM OF INFORMATION ABOUT AN AGGLOMERATE STATE OF THE PARTICLES (318). (FIG.1)
Patent MY-156053-A (MY)
Title: Reducing cc message transmission in a provider network
Inventor: SRIGANESH KINI
Filed: 2009-09-03
Abstract: A METHOD AND APPARATUS FOR REDUCING THE NUMBER OF CC MESSAGES TRANSMITTED IN A PROVIDER NETWORK. IN ONE EMBODIMENT OF THE INVENTION, A FIRST SERVICE PROVIDER NETWORK ELEMENT (150) RECEIVES CC MESSAGES FROM A FIRST CUSTOMER NETWORK (110) AT A FIRST PERIODICITY RATE. THE FIRST SERVICE PROVIDER NETWORK ELEMENT (150) STORES THE RECEIVED CC MESSAGES AND REDUCES THE FIRST PERIODICITY RATE TO CREATE A SECOND PERIODICITY RATE THAT IS SMALLER THAN THE FIRST PERIODICITY RATE. THE FIRST SERVICE PROVIDER NETWORK ELEMENT (150) TRANSMITS CC MESSAGES TO A SECOND SERVICE PROVIDER NETWORK ELEMENT (160) THROUGH THE PROVIDER NETWORK AT THE SECOND PERIODICITY RATE. OTHER METHODS AND APPARATUS ARE ALSO DESCRIBED.
Patent OA-11679-A (OA)
Title: Improved disposable syringe with a retractable needle.
Inventor: MAGGIONI TARCISIO
IPC: A61M5/50
Filed: 2000-01-26
Abstract: The present invention relates to a disposable safety syringe including an automatically retractable needle for preventing said syringe from being reused, comprising a cylindric body defining, at one end thereof, a needle coupling end-piece and being opened at the other end portion thereof for introducing thereinto a piston having a sealing gasket. The main feature of the invention is that on said piston are provided engaging means for engaging and retracting the needle after the delivering of the injection liquid.
Patent OA-11692-A (OA)
Title: Dry powder dispersing apparatus and methods for their use.
Inventor: BURR JOHN B
IPC: A61K31/505
Filed: 1999-05-19
Abstract: The invention provides various apparatus and methods for aerosolizing a powdered medicament. In one exemplary embodiment, an apparatus includes a pressurization cylinder, and a piston which is slidable within the cylinder to pressurize a gas. A handle is coupled to the piston and is movable between an extended position and a home position to pressurize the gas. An aerosolizing mechanism is included and is configured to aerosolize a powdered medicament that is held within a receptacle with pressurized gas from the cylinder. A carriage assembly is included to receive the receptacle and to couple the receptacle to the aerosolizing mechanism. A first and a second interlock are operably engageable with the carriage assembly to prevent coupling of the receptacle with the aerosolization mechanism. The first interlock is released to allow movement of the carriage upon movement of the handle to the extended position. The second interlock remains engaged if the receptacle is only partially inserted into the carriage assembly.
Patent OA-12206-A (OA)
Title: Process for converting synthesis gas into higher hydrocarbons.
Inventor: KETLEY GRAHAM WALTER
IPC: B01J8/22
Filed: 2000-11-22
Abstract: A process for the conversion of synthesis gas into higher hydrocarbon products in a system comprising a high shear mixing zone and a post mixing zone wherein the process comprises:  a) passing a suspension of catalyst in a liquid medium through the high shear mixing zone where the suspension is mixed with synthesis gas; b) discharging a mixture of synthesis gas and suspension from the high shear mixing zone into the post mixing zone; c) converting at least a portion of the synthesis gas to higher hydrocarbons in the post mixing zone to form a product suspension comprising catalyst suspended in the liquid medium and the higher hydrocarbons; d) separating a gaseous stream comprising unconverted synthesis gas from the product suspension; e) recycling the separated gaseous stream to the high shear mixing zone; and f) recycling at least a portion of the product suspension to the high shear mixing zone.
Patent OA-13054-A (OA)
Title: Pole top support for aerial electric power lines.
Inventor: BOSCHETTI CLAUDIO KLAUDIO DI
IPC: C07K14/47
Filed: 2001-08-27
Abstract: Tope pole support for aerial electric power lines, in particular with suspended wires in which said aerial electric power lines comprise at least three wires (14) and said top pole support (10; 20; 40) comprise corresponding insulating means (13), in particular suspended insulators, to hold said wires (14). According to the invention, said top pole support (20; 40) traces a continuous curve substantially passing by the point in which the insulating means (13) are.
Patent RU-2003105806-A (RU)
IPC: A61P31/12
Filed: 2001-07-26
Abstract: The present invention relates to methods to determine peptides presented on the surface of mammalian cells following addition to the cells of a protein. The present invention also relates to diagnostic tests based on the determination of such peptides or modified molecules resulting from determination of such peptides, such as pharmaceutical entities preferably having specific biological activity and reduced or enhanced immunogenicity when compared with the corresponding non-modified molecules. The methods according to this invention are preferably established with tools using mass spectroscopy (MS).
Patent RU-2003121611-A (RU)
IPC: H04N7/18
Filed: 2003-07-16
Abstract: A connection panel (5) fits on a removable segment (6) of a casing wall. Multiple releasable contacts on the segment connect to multiple contacts on the equipment side when the segment fastens on the casing (2). External connections (4) on the connection panel make electrical contact with multiple contacts on the segment side.
Patent RU-2004108149-A (RU)
IPC: B65D43/04
Filed: 2004-03-19
Abstract: Manufacture of a container top part forming a cover of a container for solid, paste-like liquid and particulate products, particularly food products, comprises placing a foil (14) into an injection mold (15), and heating the foil to a predetermined temperature before it is contacted by a plastic material injected into the injection mold. Manufacture of a container top part forming a cover of a container for solid, paste-like liquid and particulate products, particularly food products, where foil is provided on the container top part, and container top part consists of a plastic material, comprises providing an injection mold having a cavity corresponding to the container top part; placing the foil into the injection mold, and heating the foil to a predetermined temperature before it is contacted by a plastic material injected into the injection mold; injecting the plastic material into the injection mold in contact with the heated foil, to establish a connection between the container top part and the heated foil in the injection mold; and permitting the container top part and foil connected to it, to jointly cool down to form the container top part with the foil joined with it.
Patent RU-2005122023-A (RU)
IPC: G01F23/296
Filed: 2003-12-06
Abstract: Device for operating a vibrating unit (1) of a vibration resonator has a piezoelectric drive (2) that is connected to the vibrating unit and feedback control electronics (3). The latter excite the drive using a periodic signal, while the response signal of the drive is fed to the electronics. A peak compensation unit (4) has at least a suppression unit (5, 13) with a switching element (6, 14). The suppression unit is controlled by the electronics such that during a rising and or falling flank of the excitation signal, the piezoelectric drive is connected to earth.
Patent RU-2006105570-A (RU)
Title: Способ утилизации отходов в производстве углеродсодержащих дисперсий
IPC: C08J3/02
Filed: 2006-02-22
Abstract: 1. Способ утилизации отходов в производстве углеродсодержащих дисперсий, используемых при приготовлении резиновых смесей, с использованием в качестве связующего органических веществ, а в качестве наполнителя тонкодисперных материалов для получения пластичной смеси, перерабатываемой экструзией, отличающийся тем, что в качестве связующего используют жидкие каучуковые отходы со средней молекулярной массой от 500 до 20000, а в качестве наполнителя отработанные углеродсодержащие адсорбенты с удельной поверхностью от 15 до 130 м/г.2. Способ по п.1, отличающийся тем, что соотношение компонентов связующего к наполнителю составляет от 100:25 до 100:200 мас. ч.3. Способ по п.1, отличающийся тем, что в качестве наполнителя используют отработанный активированный уголь.4. Способ по п.1, отличающийся тем, что жидкие каучуковые отходы содержат смесь растворителей от 0 до 20% мас.5. Способ по п.1, отличающийся тем, что углеродсодержащую дисперсию получают в экструдере при температуре от 25 до 180°С.
Patent RU-2006128798-A (RU)
IPC: H04H20/00
Filed: 2005-04-19
Abstract: The present invention relates to a method for indicating the validity of a channel configuration. Configuration information for establishing the reception of a physical channel carrying point-to-multipoint services is sent via a point-to-multipoint control channel to a mobile terminal. Validity information is sent together with the configuration information for indicating to the mobile terminal when or how long the configuration information is valid. The configuration information may be valid during a current modification period, after a given activation time, or up to a given activation time. Thus, a mobile terminal can avoid using an invalid physical channel configuration.
Patent RU-2006134170-A (RU)
IPC: C08L27/00
Filed: 2006-09-25
Abstract: A perfluoroelastomer composition comprises a perfluoroelastomer (e.g., tetrafluoroethylene/perfluoro(methyl vinyl ether) copolymer), an organic peroxide (e.g., 2,5-dimethyl-2,5(tert-butylperoxy)hexane and a scorch retarder (e.g., o-phenylphenol), and the perfluoroelastomer composition is excellent in processability and unlikely to scorch. Furthermore, a perfluoro rubber molded article obtained by thermal crosslinking of the perfluoroelastomer composition is excellent in rubber physical properties such as tensile strength and elongation at break and in a compression set property.
Patent RU-2006135021-A (RU)
Title: Устройство для термического обезвреживания анодных газов алюминиевого электролизера
IPC: C25C3/00
Filed: 2006-10-03
Abstract: 1. Устройство для термического обезвреживания анодных газов, включающее горелку, установленную на приливе газосборного колокола, теплообменник, вертикальный стояк с регулирующей дроссельной заслонкой для подвода в горелку нагретого воздуха и систему газоходов, отличающееся тем, что горелка выполнена в виде двух цилиндров, верхнего и нижнего, причем в верхнем цилиндре расположены на разных уровнях по высоте горелки приливы, установленные со смещением относительно друг друга относительно вертикальной оси горелки, в нижнем цилиндре выполнен лючок, предназначенный для чистки горелки, и патрубок для подвода нагретого воздуха.2. Устройство по п.1, отличающееся тем, что приливы выполнены в виде колец, полуколец, секторов.
Patent RU-2006143056-A (RU)
IPC: G01V3/38
Filed: 2005-02-08
Abstract: A method of analysing results from an underwater controlled source electromagnetic (CSEM) survey of an area that is thought or known to contain a subterranean hydrocarbon reservoir is described. The method is based on a wavefield extrapolation of narrow-band electromagnetic field data obtained from pairs of source and receiver locations. The data comprise a plurality of discrete frequencies between 0.01 Hz and 60 Hz. The wavefield extrapolation is performed for each of these discrete frequencies to provide distributions of electromagnetic scattering coefficient as a function of position and depth beneath the survey area. These distributions may then be combined to provide a displayable image of electromagnetic scattering coefficient. The method is able to quickly provide a displayable image that is readily interpretable.
Patent RU-2007105493-A (RU)
IPC: B01J19/18
Filed: 2005-06-29
Abstract: Waste water treatment apparatus has surfaces (3) coated with material, along which the water flows. These are fitted with scrapers (5, 5') which move in a path (12) which covers the surface in sections.
Patent RU-2007112478-A (RU)
Title: Рассасывающиеся керамические композиции
IPC: A61L27/42
Filed: 2005-09-09
Abstract: 1. Керамическая композиция-предшественник, используемая для получения рассасывающихся или частично рассасывающихся высокопрочных биоэлементов, где композиция включает по меньшей мере один силикат с Са в качестве основного катиона со скоростью рассасывания меньше или равной скорости роста кости, и этот по меньшей мере один силикат действует как основная связующая фаза в отвержденном материале, причем этот по меньшей мере один силикат Са присутствует в количестве 50 мас.% или больше, а все остальные составляющие, если они есть, представлены добавками, такими как инертная фаза, и/или добавками, которые делают отвержденный материал рентгеноконтрастным.2. Керамическая композиция-предшественник по п.1, где основная связующая фаза (фазы) дополнительно включает фосфаты, карбонаты, сульфаты кальция или их сочетания.3. Керамическая композиция-предшественник по п.1, где основная связующая фаза (фазы) включает 3CaO·SiO.4. Керамическая композиция-предшественник по п.1, дополнительно включающая по меньшей мере одну вторую связующую фазу на основе фосфатов и/или сульфатов в количестве менее 20 мас.% от количества основной связующей фазы/фаз.5. Керамическая композиция-предшественник по п.4, где вторая связующая фаза включает растворимое стекло, например фосфорсодержащее стекло, материалы на основе апатита, предпочтительно растворимый СаН-фосфат.6. Керамическая композиция-предшественник по п.1, дополнительно включающая стеклянные частицы, волокна, усы и/или пластинки медленно растворяющихся неорганических или инертных минеральных фаз, предпочтительно минерал на основе силиката Са или кальций-силикатное стекло, и в высокой ст
Patent RU-2007122841-A (RU)
Title: Верхний решетный стан очистки зерноуборочного комбайна
IPC: A01F12/44
Filed: 2007-06-18
Abstract: 1. Верхний решетный стан очистки зерноуборочного комбайна, включающий каркас, выполненный из боковин, переднего и заднего поперечных брусьев, один или два верхних жалюзийных решета с механизмами регулировки угла открытия жалюзей и удлинитель, отличающийся тем, что каркас снабжен дополнительным поперечным брусом с одним или двумя радиусными пазами, закрепленный на боковинах сзади ниже решет, а также скатным листом с одним или двумя прорезями и прорезиненным ремнем, который прикреплен верхней частью к задней планке удлинителя, а нижней сопряжен с верхней частью скатного листа, при этом механизмы регулировки жалюзийных решет имеют поворотные рычаги, которые средней частью сопряжены с прорезями скатного листа, а задней частью - с радиусными пазами дополнительного поперечного бруса и закреплены на нем резьбовыми соединениями.2. Верхний решетный стан очистки зерноуборочного комбайна по п.1, отличающийся тем, что скатный лист выполнен в виде тонколистовой поверхности с отбортовками и снабжен уголком, который прикреплен к отбортовкам с равномерным зазором относительно поверхности скатного листа, а скатный лист прикреплен к дополнительному поперечному брусу и к боковинам, при этом уголок снабжен винтами с контрогайками.
Patent RU-2007123708-A (RU)
IPC: F16F9/02
Filed: 2005-11-25
Abstract: The invention relates to a pneumatic damping device for the mechanical damping of displacements of appliances, in particular pieces of furniture. Said device is equipped with a valve unit (6) comprising an elastically suspended valve part. The latter has a restrictor opening, which enlarges as the pressure increases.