baber/WOPTO huggingface dataset:
Patent FR-2157062-A5 (FR)
Title: Electrochemical cathode catalyst - consisting of perovskite formed by solid soln of first and second non-noble metal oxides
IPC: H01M4/90
Filed: 1971-10-15
Granted: 1973-06-01
Abstract: Cathode catalyst for an electrochemical cell e.g. for converting alcohols into ketones, or hydrocarbons into carboxylic acids with an inert anode, an inert, electrically conducting cathode, an aq. alkaline electrolyte, a device for supplying a combustible fluid to the anode, and a device for supplying an oxidising fluid to the cathode, consists of a perovskite of a non-noble metal with a mixed valence of formula AxA'yBO3 (where A is a gp. IA, IIA or IIIB metal; A' is a metal with a different valence from metal A from gps. IA, IIA or IIIB B is a non-noble gp. IVB, VB, VIB, VIIB, or VIII transition metal; and x+y = 1). The perovskite is a solid soln. of a first oxide of formula ABO3 and a second oxide of formula A'BO3, the metal B being in a first valence state in the first oxide and in a second valence state in the second oxide, the sum of the valences of A and B in the first oxide being 6, and of A' and B in the second oxide being.
Patent FR-2121148-A5 (FR)
Title: Methacrylic cpds prepn - by catalytic dehydration of isobutyric acid derivs with siliconoxygen cpds and iodide catalyst
IPC: C07C/
Filed: 1971-12-30
Granted: 1972-08-18
Abstract: Methacrylic cpds. - where A = CN or COOAlk are prepd. by dehydration of isobutyric acid derivs. by heating in the presence of iodine as a catalyst on a carrier contg. Si and O at 400-700 degrees. The carrier has a surface of 0.05-10 m2/g. with pore size 500-10,000 angstroms dia. and contains 0.01-1% Ni, Cu or Co oxides or salts specif. iodides. Suitable catalysts are calcined steatite, enstatite or olivine. Conversions of 35% with yields of 85% are obtained.
Patent FR-2239864-A5 (FR)
Title: Vehicle speed indicator - gives warning of reaching predetermined speed pre-set by selector knob
IPC: G01P1/10
Filed: 1973-08-01
Granted: 1975-02-28
Abstract: A speed detector (1) is branched on the drive shaft (2) from the gearbox to the speedmeter (3). The detector (1) gives an output signal to a comparator (4), comparing this signal with an adjustable reference signal. The comparator sends a control signal to signal generator (5) with an "on"-"off" switch (6). The detector has a magnet fixed to the cable which gives a variable signal in a detector coil. The signal generator (5) has an amplifier and a signal generator. Both are transistorised. The chosen speed is selected by knob (41) and the warning is given by flashing lamp (52).
Patent FR-2251202-A5 (FR)
Title: Paper roll holder and dispenser - has parts of telescopic spindles spring urged apart
IPC: B65H75/02
Filed: 1973-11-09
Granted: 1975-06-06
Abstract: The paper roll is held at each end of its hollow core by a slightly conical boss which is flanged at the outer end. On one side the boss fits over a spindle end which is fixed and may be fixed in turn to a carrying bracket. At the other end, the core of the boss is spring loaded, in order to maintain slight end pressure on the paper roll, through the flanges of the conical boss. The spring loaded end of the flanged holder is able to rotate but the spring pressure acts as a brake on the roller to prevent it from unrolling itself unless there is a definite pull on the material.
Patent CH-696383-A5 (CH)
Title: Water repulsive skin e.g. front arm skin, cover, has thin endless tube knitted of synthetic polypropylene thread and water repulsive pad
Inventor: HAYOZ PHILIPPE
IPC: A61F13/00
Filed: 2003-08-25
Abstract: The cover has a thin endless tube knitted of synthetic polypropylene thread, and a water repulsive pad. An independent claim is also included for a water repulsive pad with integrated water repulsive skin cover.
Patent DD-203749-A5 (DD)
Title: Verfahren zur gewinnung von gallium
Inventor: KATAOKA YUSHIN
IPC: C01G15/00
Filed: 1982-09-17
Abstract: Gallium laeszt sich aus Loesungen, insbesondere stark basischen waeszrigen Loesungen, wirksam entfernen, indem man die Loesung mit einem Chelatharz in Kontakt bringt, das (A) = NOH-Gruppen und (B) funktionelle Gruppen, die zur Bildung einer Chelatbindung mit den funktionellen Gruppen (A) ueber Gallium in der Lage sind, oder mit einem Chelatharz, das Metallsalze der genannten funktionellen Gruppen enthaelt, wodurch Gallium am Harz absorbiert wird.
Patent DD-208536-A5 (DD)
Inventor: HEYWANG GERHARD
IPC: C07D307/86
Filed: 1983-02-08
Abstract: Aryl N-oxalyl-N-methyl-carbamates of the general formula    <IMAGE> (I)  in which X represents an alkoxy, alkenoxy, alkinoxy, aryloxy, alkylthio, alkenylthio, alkinylthio or arylthio radical, each of which may be optionally substituted or represents a radical of the general formula -N R3R4, wherein R3 and R4 are identical or different and represent a hydrogen atom or an alkyl, alkenyl, alkinyl, cycloalkyl, cycloalkenyl or aryl radical, each of which may be optionally substituted, or the radicals R3 and R4, together with the N atom to which they are bonded, form an optionally substituted heterocyclic ring, and R1 represents an aryl radical which is optionally substituted, are novel and find use as pesticides, especially for combating insects, acarids and nematodes.
Patent DD-224319-A5 (DD)
Inventor: SATZINGER GERHARD
IPC: C07D277/34
Filed: 1984-05-08
Abstract: 4-Oxothiazolidin-2-ylidene-acetamide derivatives, processes for their preparation, pharmaceutical compositions and a method for treating diseases of the central nervous system such as epilepsy are described.
Patent DD-281574-A5 (DD)
Title: Elektropneumatische fernschaltvorrichtung, insbesondere zur schaltung der gangstufen des synchronisierten mechanischen wechselgetriebes von kraftfahrzeugen
Inventor: SIMONYI SANDOR
IPC: F16H61/00
Filed: 1988-05-20
Abstract: Die erfindungsgemaesze Fernschaltvorrichtung ist dadurch gekennzeichnet, dasz der Schaltzylinder (35) in seinen aeuszeren Stellungen ueber eine geringere und eine groeszere Druckkraftstufe verfuegt und weiterhin in der Fernschalteinheit (7, 56) in Wahlrichtung (v) so viele Signalgeber (EV12, EV34, EV56, EVR) wie die Anzahl der Schaltstraszen (1-2x, 3-4x, 5-6x, Rx) angeordnet sind. In Schaltrichtung (k) sind mindestens symmetrisch zur Mittelstellung je zwei Signalgeber (64, EKK1, EKS1, EKS2, EKK2) angeordnet, von denen die zur Mittelstellung naeher liegenden Signalgeber (64, EKS1, EKS2) mit den, in den aeuszeren Stellungen des Schaltzylinders (35) eine geringere Druckkraftstufe erzeugenden Ventilen (SKO-SK1, SKO-SK2) in Steuerverbindung stehen. Die von der Mittelstellung entfernt liegenden Signalgeber (64, EKK1, EKK2) stehen mit den, in den aeuszeren Stellungen des Schaltzylinders (35) eine groeszere Druckkraftstufe erzeugenden Ventilen (SK1, SK2) in Steuerverbindung. Weiterhin ist der Schaltzylinder (35) mit mindestens je einem, die Endstellung signalisierenden Signalgeber (P1, P2, ESO) versehen. In der Fernschalteinheit (7, 56) steht der Fernschalthebel (12, 58) mit einer mittels Hilfsenergie betaetigten Brems-Befestigungsvorrichtung (F) in Zwangsverbindung, wobei mit der Brems-Befestigungsvorrichtung (F) die in der Fernschalteinheit (7, 56) in Schaltrichtung (k) angeordneten Signalgeber (18, EK1, EK2, 64, EKK1, EKS1, EKS2, EKK2) und die die Endstellung des Schaltzylinders (35) signalisierenden Signalgeber (P1, P2, ESO) in Steuerverbindung stehen. Fig. 1{Fernschaltvorrichtung; Schaltzylinder; Fernschalteinheit; Signalgeber; Ventile; Fernschalthebel; Brems-Befestigungsvorrichtung; Druckkraftstufe; Schaltstrasze; Hilfsenergiebefaehigung}
Patent DD-283396-A5 (DD)
Title: Verfahren zur herstellung von substituierten azacyclohexyl-derivaten
Inventor: KUMP WILHELM
IPC: A61P3/06
Filed: 1988-10-24
Abstract: Erfindungsgemaesz werden substituierte Azacyclohexyl-Derivate von Rifamycinen der Formel (I) und ihre Salze hergestellt, worin R1 Wasserstoff oder Trialkylacetyl bedeutet, R2 Wasserstoff oder Acetyl bedeutet und R3 Alkyl bedeutet, welche wertvolle pharmakologische Eigenschaften besitzen. Formel (I){lipidsenkende Wirkung, Anwendung als Arzneimittel, Behandlung von Arteriosklerose}
Patent DD-297025-A5 (DD)
Title: Abstreichgiessvorrichtung mit rakellineal zum antragen magnetiserbarer, bindemittelhaltiger schichten auf traegerfolien
Inventor: KAERMER REINHARD
IPC: G11B5/845
Filed: 1989-05-29
Abstract: Die Erfindung betrifft eine Abstreichgieszvorrichtung mit Rakellineal zum Antragen magnetisierbarer bindemittelhaltiger Schichten auf Traegerfolien und ist anwendbar beim Auftragen magnetisierbarer, bindemittelhaltiger Schichten auf Traegerfolien, insbesondere bei der Herstellung von Magnetbaendern. Bei einer Abstreichvorrichtung mit Rakellineal sind im Rakellineal (3) Magnete (6) beliebiger Feldstaerke angeordnet, deren Polflaechen parallel zu der zu beschichtenden Traegerfolie (1) ausgerichtet sind. Die Magnete (6) sind in ihrer vertikalen Lage im Rakellineal (3) verstellbar angeordnet. Als Magnete koennen Gleich-, Wechselstrom-, oder Permanentmagnete verwendet werden, die auch als mehrere kleine Magnete als Packung angeordnet sein koennen.{Aufzeichnungstraeger; Magnetband, beschichten; Abstreichgieszvorrichtung; Rakel; Magnete; Traegerfolie}
Patent DD-285176-A5 (DD)
Title: Justiervorrichtung zur montage von kammerhauben an rohrbuendelwaermeuebertragern
Inventor: THUROW BERNVARD
IPC: F28F9/10
Filed: 1989-06-20
Abstract: Die Erfindung bezieht sich auf eine Justiervorrichtung zur Montage von Kammerhauben an Rohrbuendelwaermeuebertragern. Erfindungsgemaesz ist in mindestens einem Schraubenloch des Gehaeuse- oder Kammerflansches ein Justierbolzen abnehmbar angeordnet, der zur Montage ueber eine verdrehsicher angeordnete radiale Stecklasche, die in parallelflaechige Ausnehmungen des Justierbolzens auf der Seite der Dichtleiste der Flanschverbindung eingreift, und eine Schraubverbindung in dem Schraubenloch verspannbar ist. Dadurch wird eine exakte radiale Justierung der Kammerhaube zum Gehaeuseflansch schon bei ihrem ersten Ansetzen gesichert. Im Bedarfsfall ist auf dem Justierbolzen eine Wechselhuelse angeordnet, die einen Ausgleich zwischen den Durchmessern von Justierbolzen und Schraubenloch gewaehrleistet.{Justiervorrichtung; Rohrbuendelwaermeuebertrager; Montage; Kammerhaube; Flanschverbindung; Gehaeuseflansch; Kammerflansch; Justierbolzen}
Patent DD-290526-A5 (DD)
Title: Rauschgenerator
Inventor: ROTH PETER
IPC: H03B29/00
Filed: 1989-12-20
Abstract: Die Erfindung betrifft einen Rauschgenerator, der zur Pruefung und Analyse von Systemen sowie bei der Nachbildung natuerlicher Rausch- und Zufallsprozesse angewendet werden kann. Ziel ist ein Rauschgenerator, der ohne komplizierte elektronische Schaltung arbeitet. Das Wesen der Erfindung besteht darin, dasz an einem Koerper aus supraleitendem Material eine Gleichstromquelle anliegt. Dem Koerper sind Mittel zur Kuehlung und Heizung zugeordnet. An wenigstens einer Stelle des Supraleiters in der Naehe der Heizung ist ein normalleitendes Gebiet geringen Volumens mit einem elektrischen Widerstand vorhanden. Wenn das Volumen dieses Gebietes nahezu verschwindet, was durch geeignetes Kuehlen und Heizen erreicht wird, steigen die Fluktuationen seines Widerstandes stark an. UEber dem Koerper faellt eine Rauschspannung ab. Figur{Rauschgenerator; Material, supraleitend; Gleichstrom; Kuehlung; Heizung; Supraleiter; Gebiet, normalleitend; Widerstand; Fluktuation; Rauschspannung}
Patent DD-292385-A5 (DD)
Title: Verdampferanlage
Inventor: PARIS GERHARD
IPC: B01D1/04
Filed: 1990-03-13
Abstract: Die Erfindung betrifft eine Verdampferanlage zur Destillation von Fluessigkeitsgemischen. Aufgabe der Erfindung ist es, eine kontinuierliche Destillation von Fluessigkeiten mittels einer speziellen Verdampferanlage zu ermoeglichen. Erfindungsgemaesz wird die Aufgabe dadurch geloest, dasz eine Anlage, bestehend aus Vorratsbehaelter mit Dampfleitungsummantelung, Niveaugefaesz mit Regelungseinrichtung, Destillationsrohr mit Ummantelung und Isolierung, Kuehler und Vorlage, angegeben wird.{Verdampferanlage; Vorratsbehaelter; Kegelventil; Niveaugefaesz; Isolierung; Destillationsroehre; Kuehler; kontinuierliche Destillation; Dampfbildung}
Patent DD-296545-A5 (DD)
Title: Kaltluftkaeltemaschine
Inventor: HENATSCH ALFRED
IPC: F25B9/00
Filed: 1990-07-05
Abstract: Die Erfindung betrifft eine Kaltluftkaeltemaschine, insbesondere zum Kuehlen oder Klimatisieren eines thermisch hochbelasteten Raumes, die mit Abgasenergie von einem Verbrennungsmotor ueber einen Abgasturbolader antreibbar ist. Erfindungswesentlich ist, dasz der gesamte Abgasmassestrom des Verbrennungsmotors (1) ueber eine Abgasleitung (2) einer hinreichend groszen Abgasturbolader-Turbine (3) zugefuehrt ist, welche einen Luftverdichter (4) des Abgasturboladers antreibt, der wiederum Auszenluft (6) ansaugt und diese derart aufbereitet, dasz ein Teil des verdichteten und in einem nachgeordneten Ladeluftkuehler (5) gekuehlten Gesamtluftmassestroms (7) durch eine daran angeschlossene Ladeluftleitung (8) den Verbrennungsmotor (1) ausreichend mit Ladeluft versorgt und der restliche abgezweigte Teilluftmassestrom (9) durch eine Luftturbine (10) entspannt und damit weiter abgekuehlt zum Raum (11) stroemt. Fig. 1{Kaltluftkaeltemaschine; Raumkuehlung; Klimatisierung; Abgasenergie; Verbrennungsmotor; Abgasturbolader; Abgasturbine; Luftverdichter; Ladeluftkuehler; Luftturbine; Gesamtluftmassestrom; Ladeluft; Teilluftmassestrom}
Patent BE-1001923-A6 (BE)
Title: Dispositif d'eclairement d'appareil de visee.
Inventor: STOCKER ARTHUR
IPC: G02B27/34
Filed: 1988-01-27
Granted: 1990-04-17
Abstract: Dispositif destiné à éclairer le réticule d'appareils de visée reflex pour l'amplification des contrastes entre le but et les repères de visée de l'appareil de visée, dispositif réversible, qui peut être monté et démonté rapidement, et qui permet une utilisation d'ames même dans des conditions visibilité défavorables et de nuit, si le terrain de combat est éclairé.
Patent BE-1007323-A6 (BE)
Title: Deactiveerinrichting.
Inventor: LECLEF ROGER
IPC: B60R25/04
Filed: 1994-02-01
Granted: 1995-05-16
Abstract: Deactiveerinrichting bevattende een noodsignaal detector voorzien om bij detectie van het noodsignaal een stuurpuls te genereren, en verder bevattende een interuptie-schakelaar voorzien voor het deactiveren van aandrijfmiddelen, in het bijzonder de aandrijfmiddelen van een voertuig, welke detector een telefonische codewoord ontvanger bevat voorzien om het via een telefoonverbinding uitgezonden als codewoord gecodeerd noodsignaal te ontvangen, en waarbij de detector via een pulsvertragingslijn verbonden is met de interruptieschakelaar die voorzien is om onder besturing van stuurpuls aandrijfmiddelen te deactiveren.
Patent BE-1012938-A6 (BE)
Title: Plastic bag
Inventor: TIRCHER GUY
IPC: B65D30/08
Filed: 1999-10-18
Granted: 2001-06-05
Abstract: Plastic bag, in particular to be used by shop customers for taking awaytheir purchases, comprising two lateral walls (2, 3), a bottom (4) and,opposite the latter, an aperture (5), external ribs (6, 7) extendingtransversally from the bottom (4) to the aperture (5) in which at least thetwo lateral walls (2, 3) are each lined inside the bag (1) by at least twothicknesses of material anchored to the corresponding lateral wall (2, 3)along the aperture (5).<IMAGE>
Patent BE-1012955-A6 (BE)
Title: Transmission system in an engine (crankshaft-cam shaft) comprising two cogbelts (main + spare) working in separate ventilated housings
IPC: F16H7/02
Filed: 1999-11-03
Granted: 2001-06-05
Abstract: In the event of the main belt breaking, it will not be able to hinder theproper operation of the spare belt which immediately takes over in the eventof breakage. Moreover, a ventilation system ventilates and cools -permanently - both belts (main and secondary), which provides them with morefavourable operating conditions.<IMAGE>
Patent ES-2004307-A6 (ES)
Title: Improvements in the design of fuel feed pumps
Inventor: DUASO PARDO JAVIER
IPC: F04D5/00
Filed: 1987-06-19
Abstract: The invention relates to a number of improvements introduced in the design of fuel feed pumps and consisting, on the one hand, of a special configuration of the stator body and of the stator cover, as well as of the rotor accommodated therebetween, for the purpose of producing two pumping-up stages which follow one another and of which the first is a centrifugal and driving type and the second an exclusively driving type, while on the other hand they consist of a modular design of the pump which permits the sequential coaxial coupling, inside a tubular housing, of the stator body, rotor, stator cover, electric motor and upper body, with the result that after the installation of the abovementioned parts the housing is closed by means of flanging its end sides, thus axially fixing all the parts contained therein.
Patent ES-2007195-A6 (ES)
Title: Safety belt restraining system for vehicle occupants
Inventor: FOHL ARTUR
IPC: B60R22/20
Filed: 1988-04-13
Abstract: In the safety belt restraining system a tightening means is combined with a height adjuster for the upper deflection fitting of the shoulder belt. By offsetting of the pivot axis of the detent lever of the height adjuster in the forward direction with respect to the engagement point of the deflection fitting, on activation of the tightening means a turning moment is generated at the detent lever by which said lever is pivoted into engagement with the next available detent opening of the height adjuster.
Patent ES-2011657-A6 (ES)
Title: Air volume regulator valve
IPC: F24F11/75
Filed: 1988-06-22
Abstract: Disclosed is an air volume regulator valve for an air distribution apparatus for heating, ventilating and air conditioning systems having a first open position, a closed position and a second open position and means for maintaining relatively constant volume of airflow under changing air inlet pressures. The valve may be cylindrical, flat or corrugated and has a "dead band" feature to allow the valve to better assist in controlling temperature of a room or plenum chamber to be heated or cooled.
Patent ES-2014134-A6 (ES)
Title: Sliding roof or sliding lifting roof for motor vehicles
Inventor: SCHLAPP ALBERT
IPC: B60J7/05
Filed: 1989-05-29
Abstract: In a sliding roof or sliding lifting roof for motor vehicles, the lateral guide rails for the sliding guidance of the rigid cover and the roof frame carrying the same are entirely located below the fixed vehicle roof and are fitted closely adjacent thereto, so that neither the roof frame, nor the guide rails can reduce the free opening cross-section of the roof cutout releasing the cover following its opening. As the water channel for collecting the water penetrating via the marginal gap between the cover and the roof cutout edge is fixed only at a limited distance below guide rail, the overall height of the roof construction can be limited. As a result of the elastically deformable construction of the edge of the water channel facing the roof cutout, the guide parts of the cover or, in the case of the sliding lifting roof, the intermediate frame can pass in unimpeded manner through the elastically expandable gap between the roof cutout edge and the elastically deformable water channel edge to the guide rails.
Patent ES-2018958-A6 (ES)
Title: Filing spine
IPC: B42F13/16
Filed: 1989-10-20
Abstract: Filing spine characterized in that, unlike existing filing spines which adhere to covers or jackets from which they cannot be removed and comprise complicated and expensive metal devices for filing the papers or documents, this one is unattached (separate) and its actual construction, obtained more economically by means of injection-moulding plastic material, already comprises the filing device. This construction is formed by a strip 1 from which project, on one of its faces, rods 2, 3 distributed longitudinally in pairs, each one arranged transversely and joined at the top via a bridge piece 4 which is articulated in a rotary manner on one 3 of the rods and is secured removably to the other 2 by means of a projection 8 of this latter rod 2 which is coupled and is retained in a lateral notch 7 of the bridge piece 4, the latter and the rod 2 comprising, around the notch 7 and the projection 8, individual stop steps (staggerings) 10, 9 which can be coupled together.
Patent ES-2021910-A6 (ES)
Title: Process for application of basic sepiolites as catalysts in Knoevenagel condensation reactions
Inventor: CORMA A
IPC: B01J21/16
Filed: 1989-12-12
Abstract: The inventive process relates to the application of basic sepiolites as catalysts in the Knoevenagel condensation reaction. The sepiolites employed are obtained by modification of the natural sepiolite with alkaline or alkaline-earth ions. These catalysts have a high surface area and a high pore volume.
Patent ES-2020447-A6 (ES)
Title: Procedure for the preparation of liposomes which encapsulate derivatives of 1-alkyl-1,4-dihydro-4-oxo-6- fluor-7-(n-piperazinyl)-3-quinolinecarboxylic acids
Inventor: FREIXAS BAZACO JOAN
IPC: A61K31/47
Filed: 1990-03-08
Abstract: Procedure for the preparation of liposomes which encapsulate derivatives of 1-alkyl-1,4-dihydro-4-oxo-6- fluor-7-(n-piperazinyl)-3-quinolinecarboxylic acids. It comprises: (a) making a solution of a lipid in an organic solvent, evaporating the solvent, adding a buffer containing said derivatives, stirring vigorously to obtain a suspension which is left to stand in order to allow formation of the liposomes, which are sonicated and filtered; or (b) making a solution of a lipid in an organic solvent, injecting a lesser proportion thereof into a greater portion of a buffer containing said derivatives, in order to obtain liposomes of 300-1100 angstrom diameter; or (c) dissolving a lipid in a buffer containing said derivatives in the presence of a detergent, dialysing the solution against the buffer solution with continuous stirring in order to obtain unilaminar liposomes of 280-400 angstrom diameter. The liposomes so obtained are useful as carriers of active principles against Gram-negative organisms. <IMAGE>
Patent BE-1016859-A6 (BE)
Title: Skimmer is for removal of floating material from surface of swimming pool and comprises housing and filter unit
Filed: 2005-11-23
Granted: 2007-08-07
Abstract: The skimmer is for the removal of floating material from the surface of a swimming pool and comprises a housing (1) and a filter unit. The housing is provided with an inlet aperture (2) for suction of the surface layer of the water mass and a suction aperture (7) connectable with a pump. The housing is beam-shaped and has a base wall (6), an upper wall (11), a rear wall (3) and two side walls (4,5). The housing on its side facing the water mass is fully open, thus forming an inlet aperture (2). Along this aperture, the filter is placeable/removable in/out of the housing. The filter unit is formed as an at least partly perforated filter box with a base wall (16), a front wall (10), a rear wall (13) and two sides walls (14,15). At the upper edge of the front wall is a floating valve (17) for regulation of the water flow from the surface layer, via the inlet aperture to the filter unit. Through this valve the skimmer fits perfectly to the water level in the swimming pool. The base, rear and side walls virtually connect to the corresponding walls of the housing, so that only a narrow through passage for the water is formed between the housing and the filter box. This provides for a well controlled flow. In the two side walls (14,15) and in the base wall (16) of the filter box are perforations, so that passage is provided for the water but other material is restrained. This provides for a good flow and swirling is avoided.