baber/WOPTO huggingface dataset:
Patent WO-2004084774-A1 (WO)
Title: Bandscheiben- oder zwischenwirbelprothese
Inventor: STUDER ARMIN
IPC: A61F2/00
Filed: 2003-03-24
Abstract: Bandscheibenprothese oder Zwischenwirbelprothese mit: A) einer oberen, zur Anlage an die Grundplatte eines Wirbelkörpers geeigneten Appositionsplatte (1); B) einer davon beabstandeten, zur Anlage an die Deckplatte eines Wirbelkörpers geeigneten unteren Appositionsplatte (2); C) einer Mehrzahl von elastischen Mitteln (3), welche zwischen den beiden Appositionsplatten (1,2) in deren peripheren Bereichen (4) angeordnet sind, so dass die beiden Appositionsplatten (1,2) gegeneinander elastisch bewegbar sind; und D) einer Zentralachse (5) welche im wesentlichen senkrecht auf den beiden Appositionsplatten (1,2) steht; wobei die elastischen Mittel (3) derart ausgebildet, beziehungsweise angeordnet sind, dass die Bandscheibenprothese insgesamt eine asymmetrische Steifigkeit aufweist.
Patent WO-9101464-A1 (WO)
Title: Anti-return valve, particularly for micropump and micropump provided with such a valve
Inventor: VAN LINTEL HARALD T G
IPC: F16K15/14
Filed: 1990-07-17
Abstract: The body of the anti-return valve is formed within a silicon plate (1) machined by photolythographic processes. The plate (1) delimits a valve chamber (7) with two glass plates (2, 5) adhered to the respective sides of the plate (1). The chamber is divided into two compartments (8, 9) by means of a shutter of general planar shape having an annular rib (12) in a central region. The shutter is comprised of means for connection to the body of the valve formed by at least two connection members (11a, 11b) which leave between them at least one opening (14a, 14b) for communication of the two compartments of the valve chamber. Application to micropumps, particularly for the precise metering of small amounts of drugs to be injected.
Patent WO-9222126-A1 (WO)
Inventor: FLUECKIGER DANIEL
IPC: H02P25/04
Filed: 1992-06-04
Abstract: Die Schaltung zur Laststeuerung eines Asynchron-Motors (11) umfasst zwei Kondensatoren (19, 20), von denen der eine (20) über einen Schalter (70) parallel zum anderen (19) zusschaltbar ist. Zur Steuerung dienen ein Stromsensor (30) und ein Spannungssensor (40), deren Signale (S1, S2) in einem Komparator (25) verglichen werden. Je nach dem Grössenverhältnis der Signale (S1, S2) schaltet eine Schaltersteuerung (60) mit Kipphysteresis den Schalter (70) ein oder aus. Die Schaltung ist einfach, arbeitet unabhängig von der jeweiligen Netzspannung (U) und ist bezüglich ihres Schaltpunktes durch den Stromsensor (30) einstellbar.
Patent WO-9836253-A1 (WO)
Title: Transmitter-receiver-modul für glasfasersensoren
Inventor: MOREL PHILIPPE
IPC: G01D5/26
Filed: 1998-02-16
Abstract: Transmitter-Receiver-Modul für Glasfasersensoren, welche auf der Messung von Farbänderungen beruhen. Bis zu vier Glasfasersensoren (40a-d) können mit dem optischen Stecker (17) an das Modul angeschlossen werden. Dieses enthält maximal vier Lichtquellen (12a-d) zur Ansteuerung der Sensoren und bis zu drei Empfänger (14a-c), welche mit den optischen Filtern (15a-c) versehen, die Signale der Glasfasersensoren spektral auswerten. Jeder Empfänger ist über einen rauscharmen Transimpedanzverstärker (20a-c) an den AD-Wandler (21) angeschlossen. Die Kommunikation zwischen Modul und Steuerrechner (60) erfolgt über die parallele Schnittstelle (25a-d). Zur Vermeidung von Messfehlern durch Wellenlängendrifts sind die Lichtquellen über thermische Via's (11) mit dem temperaturstabilisierenden thermoelektrischen Kühler (22) verbunden.
Patent WO-0147973-A1 (WO)
Title: Nouveau polypeptide, proteine 14 associee a la vesicule a gaz, et polynucleotide codant pour ce polypeptide
Inventor: MAO YUMIN
IPC: C07K14/47
Filed: 2000-12-18
Abstract: L'invention concerne un nouveau polypeptide, une protéine 14 associée à la vésicule à gaz, et un polynucléotide codant pour ce polypeptide ainsi qu'un procédé d'obtention de ce polypeptide par des techniques recombinantes d'ADN. L'invention concerne en outre les applications de ce polypeptide dans le traitement de maladies, notamment des tumeurs malignes, de l'hémopathie, de l'infection par VIH, de maladies immunitaires et de diverses inflammations. L'invention concerne aussi l'antagoniste agissant contre le polypeptide et son action thérapeutique ainsi que les applications de ce polynucléotide codant pour la protéine 14 associée à la vésicule à gaz.
Patent WO-0183537-A1 (WO)
Title: Nouveau polypeptide, phospholipase humaine 9, et polynucleotide codant pour ce polypeptide
Inventor: MAO YUMIN
IPC: C12N15/12
Filed: 2001-04-28
Abstract: L'invention concerne un nouveau polypeptide, une phospholipase humaine 9, et un polynucléotide codant pour ce polypeptide ainsi qu'un procédé d'obtention de ce polypeptide par des techniques recombinantes d'ADN. L'invention concerne en outre les applications de ce polypeptide dans le traitement de maladies, notamment des tumeurs malignes, de l'hémopathie, de l'infection par VIH, des maladies immunitaires et des inflammations. L'invention concerne aussi l'antagoniste agissant contre le polypeptide et son action thérapeutique ainsi que les applications de ce polynucléotide codant pour la phospholipase humaine 9.
Patent WO-0206333-A1 (WO)
Title: Nouveau polypeptide, proteine vn1-18 du recepteur de la pheromone, et polynucleotide codant ce polypeptide
Inventor: MAO YUMIN
IPC: C07K14/705
Filed: 2001-06-25
Abstract: L'invention concerne un nouveau polypeptide, une protéine VN1-18 du récepteur de la phéromone, et un polynucléotide codant ce polypeptide ainsi qu'un procédé d'obtention de ce polypeptide par des techniques recombinantes d'ADN. L'invention concerne en outre les applications de ce polypeptide dans le traitement de maladies, notamment de troubles olfactifs. L'invention concerne aussi l'antagoniste agissant contre le polypeptide et son action thérapeutique ainsi que les applications de ce polynucléotide codant la protéine VN1-18 du récepteur de la phéromone.
Patent WO-0045047-A1 (WO)
Title: Kraftstoffversorgungssystem für eine brennkraftmaschine, insbesondere eines kraftfahrzeugs
Inventor: REMBOLD HELMUT
IPC: F02M63/02
Filed: 2000-01-27
Abstract: Es ist ein Kraftstoffversorgungssystem (1) für eine Brennkraftmaschine, insbesondere eines Kraftfahrzeugs beschrieben, das mit einem Druckspeicher (2) und einer Pumpe (6, 6', 10) versehen ist. Mit der Pumpe (6, 6', 10) kann dem Druckspeicher (2) Kraftstoff zugeführt werden. Von der Pumpe (6, 6') kann innerhalb einer geringen Zeitdauer, insbesondere innerhalb weniger Umdrehungen der Brennkraftmaschine ein für die Einspritzung ausreichender Druck in dem Druckspeicher (2) erzeugt werden.
Patent WO-0105025-A1 (WO)
Title: Verfahren und vorrichtung zur korrektur einer nutzsignalverfälschung
Inventor: WAHL MARTIN
IPC: H04B1/10
Filed: 2000-05-12
Abstract: Verfahren zur Korrektur einer Nutzsignalverfälschung im Empfangsteil (100; 200; 300; 400) eines Nachrichtenübertragungssystems durch eine Nachbarkanalstörung, die einen insbesondere rechteckförmigen Störimpuls im Nutzkanal erzeugt, wobei in einem ersten Schritt der Anfangs- oder Endzeitpunkt der Nachbarkanalstörung bestimmt und in einem zweiten Schritt eine Offsetkorrektur unter Nutzung der Information über den Anfangs- oder Endzeitpunkt ausgeführt wird.
Patent WO-0191149-A1 (WO)
Title: Beschaltung für eine schaltstrecke
Inventor: HEIDER PETER
IPC: H01H9/16
Filed: 2001-05-09
Abstract: Beschaltung für eine Schaltstrecke (2), mittels derer eine Lastspannung (UL) an eine Last (1) anschaltbar ist, wobei eine Spannungserfassungsschaltung (3) über Erfassungswiderstände (R1) mit einem eingangsseitigen und einem ausgangsseitigen Erfassungspunkt (4) der Schaltstrecke (2) verbunden ist, wobei die Spannungserfassungsschaltung (3) mit den Erfassungspunkten (4) hochohmig, aber galvanisch permanent verbunden ist.
Patent WO-0194768-A1 (WO)
Inventor: HIRN RAINER
IPC: H02N2/06
Filed: 2001-06-07
Abstract: L'invention concerne un organe capacitif commandé par un signal de commande de durée T1. Cette durée T1 ainsi que les valeurs données ou mesurées de durée de charge, durée de décharge et durée d'ouverture T2, T3 et T4 doivent répondre à l'équation: (T1 + T3 - T2 - T4) ≤ (X). Le résultat obtenu est comparé à un montant (valeur limite (X)). Si on obtient un montant supérieur à (X), on en déduit la présence d'une erreur.
Patent WO-0250427-A1 (WO)
Title: Brennstoffeinspritzventil
Inventor: YILDIRIM FEVZI
IPC: F02M61/16
Filed: 2001-12-15
Abstract: Ein Brennstoffeinspritzventil (1), insbesondere zum direkten einspritzen von Brennstoff in einen Brennraum einer gemischverdichtenden, fremdgezündeten Brennkraftmaschine, umfaßt einen Aktor (10), eine durch den Aktor (10) betätigbare Ventilnadel (3) zur Betätigung eines Ventilschließkörpers (4), der zusammen mit einer Ventilsitzfläche (6) einen Dichtsitz bildet, und eine Drallscheibe (34), die über mindestens einen Drallkanal (36) verfügt. Eine elastische Membran (37) ist zulaufseitig der Drallscheibe (34) so angeordnet, daß ein Zume?querschnitt des zumindest einen Drallkanals (36) abhängig von einem im Brennstoffeinspritzventil (1) während des Betriebs herrschenden Brennstoffdruck veränderbar ist.
Patent WO-03006273-A1 (WO)
Inventor: GERHARDT MARC
IPC: B60K15/035
Filed: 2002-06-21
Abstract: L'invention concerne un réservoir de carburant (1) pour un véhicule automobile, comportant un filtre à charbon actif (9) placé à l'intérieur d'un réservoir de compensation (5). Ce dernier (5) est fixé dans une chambre (2) du réservoir de carburant (1), prévue pour abriter du carburant. Cette conception permet d'éviter, dans une large mesure, le dégagement de carburant dans l'environnement.
Patent WO-03008242-A1 (WO)
Title: Verfahren und vorrichtung zur erkennung und behebung einer umkippgefahr
Inventor: TRAECHTLER ANSGAR
IPC: B60W10/04
Filed: 2002-07-11
Abstract: Die erfindungsgemässe Vorrichtung bzw. Verfahren dient zur Erkennung und Behebung einer Umkippgefahr eines mit einem Regelungssystem ausgestatteten Fahrzeuges um eine in Längsrichtung des Fahrzeuges orientierte Fahrzeugachse. Dieses Regelungssystem steuert mit seinen Ausgangssignalen entsprechend den Ausgangssignalwerten Aktoren an. Zur Erkennung der Kippgefahr wird eine die Querdynamik des Fahrzeuges beschreibende Größe ermittelt wird. Diese die Querdynamik des Fahrzeuges beschreibende Größe wird mit wenigstens einem charakteristischen Wert, insbesondere einem Schwellenwert, verglichen. Für den Fall, dass die die Querdynamik des Fahrzeuges beschreibende Größe größer oder gleich dem charakteristischen Wert ist, wird die Menge aller möglichen vom Regelungssystem zur Stabilitätsregelung an die Aktoren abgebbaren Kombinationen von Ausgangssignalwerten eingeschränkt.
Patent WO-03026893-A1 (WO)
Inventor: STOLTEN DETLEF
IPC: B41F15/42
Filed: 2002-08-09
Abstract: L'invention concerne un dispositif servant à appliquer un revêtement, ce dispositif comprenant, outre un écran rotatif (2), une ouverture centrale d'alimentation (3) pour amener du matériau de revêtement à l'intérieur de l'écran rotatif, ainsi qu'une racle (4). Par ailleurs, un insert (7) est placé à l'intérieur de l'écran rotatif du dispositif, cet insert réduisant le volume libre à l'intérieur de l'écran rotatif (2) d'au moins 50 %. La quantité de matériau de réserve nécessaire s'en trouve réduite de façon avantageuse, ce qui se traduit par une réduction significative des coûts, en particulier dans le cas de surfaces de revêtement réduites ou de substrats à revêtir en nombre limité.
Patent DE-1804360-A1 (DE)
Title: Omega aminoalkylnitriles
Inventor: IMMEL DR OTTO
IPC: C07C255/24
Filed: 1968-10-22
Abstract: PREPN. OF OMEGA-AMINOALKANENITRILES FROM CYCLIC KETOXIMES G5-. By reaction in the gas phase with excess ammonia, using an aluminium silicate catalyst, at elevated temps. The yields are greatly improved compared with convention prepn. in the presence of silica gel catalyst. The process is used industrially to manufacture omega-aminocapronitrile from cyclohexanone oxime.
Patent DE-1939668-A1 (DE)
Title: Sugar centrifuge sealing arrangement
Inventor: TROJAN GUENTER DIPL-BERGING
IPC: B04B7/02
Filed: 1969-08-05
Abstract: The seal preventing ingress of liquid into the solids chamber is formed by a radial flow impeller attached to the upper lip of the centrifuge drum and comprising an annular back plate supporting a number of upstanding radial vanes which are associated with a vane ring disposed above the back plate.
Patent DE-2039113-A1 (DE)
Title: Woven plastics filter fabric compacting device - to provide a denser
Inventor: B DIPL-ING HOELSCHER WOLFGANG
IPC: D06C7/02
Filed: 1970-08-06
Abstract: Filter webs or tubes woven from coarse denier polyethylene or polypropylene filaments are compacted and consolidated to provide a fabric with finer mesh by passing the tubular or web fabric through a heating zone in which the fabric is subjected to irradiation, convection or a stream of hot air or liquid to shrink the fabric which is then drawn off in the shrunk condition.
Patent DE-2051795-A1 (DE)
Title: Solvent dewaxing oils - by chilling using evaporating refrigerant
IPC: C10G73/06
Filed: 1970-10-22
Abstract: A method of separating wax from a wax bearing mineral oil comprising mixing the mineral oil with an aromatic-ketone dewaxing solvent, mixing a liquid refrigerant with the oil-solvent mixture at an initial pressure at least sufficient to maintain the refrigerant in liquid phase, and reducing the pressure on the oil-solvent-refrigerant mixture from the initial pressure to a final pressure effecting vaporization of the refrigerant and concomitant cooling of the oil-solvent mixture to a dewaxing temperature so as to cause crystallization of at least a portion of the wax the pressure being reduced at a rate such that the cooling rate of the oil-solvent mixture is maintained 1 to 30 degrees F per minute.
Patent DE-2110529-A1 (DE)
Title: Loom width holder - with retractable lid on shuttle failure
IPC: D03J1/22
Filed: 1971-03-05
Abstract: The fabric is held across the width of the loom by a profiled rod and trough, shrouded by a retractable lid. Should the shuttle catch in the loom, a cam linkage operates pressure plates to retract the shrouding lid and prevent the winding pressure from the beam from tearing the fabric.
Patent DE-2126409-A1 (DE)
Title: Electric/electronic semiconductor components - esp. capacitors-resistors and diodes in etched integrated circuits
IPC: H01G9/15
Filed: 1971-05-27
Abstract: An electrical/electronic semi-conductor component for use in hydrid resistor/capacitor/diode etched circuits has a porous base body of a group V rectifying metal (i.e. tantalum over which is a film of 5-200 molecules (30-100) thick group VII metal or its oxide (e.g., MnO2) is deposited. Between the base metal and the electrolytic layer, an intermediate film is formed of an oxide of the group V metal and this forms a mix zone with the electrolytic layer which has semiconductor properties.
Patent DE-2133886-A1 (DE)
Title: Chemical reactor tower - esp for synthetic acetic acid prodn is subdivided into heat exchange units
Inventor: SCHWEZOW NIKOLAJ WASIL EWITSCH
IPC: B01J19/00
Filed: 1971-07-07
Abstract: A reaction vessel for chemical processes has a vertical column casing subdivided into shallower sections. Each section contains concentric spiral tubes, the dia. (D) of each spiral being 0.02-0.03 times its length. This leads to a uniform temperature field both longitudinally and transversely.
Patent DE-2144358-A1 (DE)
Title: Food heat treatment plant - for food in pieces eg potatoes meat or dough
Inventor: VOGT HANS DR
IPC: A23L5/10
Filed: 1971-09-04
Abstract: The food is blanched and/or flavoured in a horizontal enclosed rotating drum through which hot gases are passed transversely through the perforated walss at 3-10 m/sec. and temp. of 80-400 degrees C. The food is loaded during operation of the plant, from a hopper via a port in one end wall and is emptied by a longitudinal slot in the drum wall covered by an internal flap which can be opened or closed externally and esp. opens or closes according to the direction of rotation. Hygienic, cost and labour saving.
Patent DE-2157532-A1 (DE)
Title: Slow-acting nitrogenous fertilizers - contg condensates of urea, formaldehyde and acetaldehyde
Inventor: TAKAHASHI MASAYOSHI
IPC: C05C9/02
Filed: 1971-11-19
Abstract: Compsn contains a condensate of urea, formaldehyde and acetaldehyde in which the molar ratio of formaldehyde to acetaldehyde is ca 1:1 to ca 20:1 and the molar ratio of urea to formaldehyde and acetaldehyde is ca 1:1 to ca 2:1. The condensate can be produced by reaction of the individual components with each other under suitable conditions, or acetaldehyde can be reacted with pre-formed condensates of formaldehyde and urea. The condensation can be carried out in the presence of an inorg. fertiliser salt so that a fertiliser cpd is formed which contains the condensate as the slow-acting nitrogenous component.
Patent DE-2159475-A1 (DE)
Title: Silicon tetrachloride prodn - by direct reaction of silicon and chlorine
Inventor: GROHMANN HELMUT DR
IPC: C01B33/08
Filed: 1971-12-01
Abstract: Metal chlorides, esp. Al, Zn or Zr, are made, according to the parent patent, by placing the metal(s) in a chamber suspended in a reactor; through which excess, gaseous Cl2 is blown. The temp. is maintained above the evaporation point of the highest evaporating product. This technique is now extended to elemental Si, if desired in combination with other metals, esp. Al, Zn or Zr, to form SiCl4 or mixtures of SiCl4 with other metal chlorides. The process is highly efficient, economic and esp. suitable for prodn. of SiCl4/TiCl4 mixtures to make TiO2 pigments - the size and props. being modified by the presence of SiCl4.
Patent DE-2165334-A1 (DE)
Title: Ice cream prodn appts - with supplementary food purity control system
IPC: A23G9/20
Filed: 1971-12-29
Abstract: The ice cream mix is stored in a throw away reservoir tank form which it is expelled into the line leading to a controlled, sterile, air injection valve at the inlet to the freezer by a pneumatic bag pressurized by the same air pump as feeds the mixer valve, so ensuring that the mixt. is not contaminated by unsterilized air. Esp. suitable for soft ice cream.
Patent DE-2211756-A1 (DE)
Title: Reactivity control in a power reactor - using adjustable position fuel rods
Inventor: ALEITE WERNER DIPL ING
IPC: G21C3/326
Filed: 1972-03-10
Abstract: In addn to the usual control rods, at least some of the fuel rods in some of the assemblies are movable in and out of their positions in the assemblies. This operation uses a pawl type lifting mechanism which can form a demountable coupling with the movable fuel rods. Esp. for use in power reactors, allows fewer control rods and associated gear to be used, resulting in smaller core dimesnions.
Patent DE-2212880-A1 (DE)
Title: Heating and/or reduction gas - prodn by crude lignite gasification in horizontal tubular chamber
Inventor: SCHENCK HERMANN PROF DR-ING WE
IPC: C10J3/10
Filed: 1972-03-17
Abstract: Crude lignite gasification to generate heating and/or reduction gas, is carried out by passing the coal through a tubular, horizontal or slightly inclined, linear, indirectly heated rigid gasifying chamber, using intrinsic water of crude lignite as gasifying agent. Lignite transport is effected by vapours and gases generated in process.
Patent DE-2213012-A1 (DE)
Title: Cold cleaning agents - contg dialkyl phenol and ethylene oxide condensates as nonionic surfactants
Inventor: KINDSCHER WOLFGANG DR
IPC: C11D17/00
Filed: 1972-03-17
Abstract: Agents for cleaning solid surfaces, e.g. cleaning machines, machine parts, power-propelled vehicles, transport containers, floors, solided with oils) used as solns. of non-ionic surfactants (I) in water-insoluble org. solvents, contains, as non-ionic surfactant (I), >=1 7-10C dialkylphenol hydroxyethylate having an 8-12 degree of oxyethylene substn. and also opt. branched aliphatic or cycloaliphatic 4-10C monocarboxylic acids and/or their alkali- or amine salts, (II), where (III) and (I) are present in a wt. ratio of 99:1 to 5:95 (60:40 to 40:60).
Patent DE-2234774-A1 (DE)
Title: Injection moulding of profiled tubing - esp pressure tubing with shaping ring to give recess in moulding for sealing ring
Inventor: KLENK PETER DR
IPC: B29C45/26
Filed: 1972-07-14
Abstract: The shaping mandrel is in two pars to allow the mounting of a shaping ring of thermoplastic or duroplastic material glass, ceramic, metal, wood plaster, cement or the like, in one piece or in segments. Outer shells define the space through which the injected material passes, to pass round the shaping ring, and form the walls of the moulded body. After cooling the shells are removed to allow the moulded tubing to be removed. without distortion.
Patent DE-2250686-A1 (DE)
Title: Accelerated concrete setting - by employing infrared heated shells
Inventor: FEYERABEND BOTHO
IPC: B28B7/00
Filed: 1972-10-16
Abstract: Table for the manufacture of concrete plates comprises a load carrying structure made up from longitudinal and transverse load carrying girders supporting a sheet metal table top acting as shell for the cast concrete. The underside of the table top is coated with a heat absorbent layer, all other components which should not transfer heat being protected by heat reflecting screening or coatings. The heat absorbent layers are pref. painted black, whilst polished aluminium is used for the reflectors. The method permits the rapid drying out and setting of the cast concrete plates.
Patent DE-2316122-A1 (DE)
Title: Generation of anti-electromagnetic radiation effects - in dead and living substances with materials generating secondary radiation
Inventor: PFEIFFER ALBERT
IPC: A61N5/00
Filed: 1973-03-30
Abstract: Material used in the process is interposed between the plane in which the electromagnetic waves break up and the inside of the object in which the anti-electromagnetic effect is initiated. The material generates, by their effect on the anti-radiation and/or by forming secondary radiation and/or reaction with the anti-radiation, and altered anti-radiation with determinable photo-chemical or photo-electric effectiveness. Mineral sulphates or carbonates may be used in the material. Additionaly, the anti-electromagnetic radiation in the irradiated object may be brought into contact with materials, e.g. Ag salts, so that photochemical reactions are initiated and/or influenced, facilitated or amplified in the irradiated body.
Patent DE-2329047-A1 (DE)
Title: Preferred signal frequency amplification - has controlled transistor with RC delay unit and locking transistor
Inventor: QUANTE HERMANN
IPC: G08B3/10
Filed: 1973-06-07
Abstract: A preferred signal frequency within a frequency band of telecommunication messages can be amplified, even when accompanied by a high noise level, resulting in a high speech fidelity. The power required is minimal and fluctuations of voltage and temperature have little disturbing effect. The signal frequency controls two transistors. The first is followed by an RC-delay element to actuate an output transistor. The second which cuts out the output transistor after a time lag or prevents it from being turned ON can be transferred into a locked position by which the output transistor remains turned ON.
Patent DE-2333315-A1 (DE)
Title: Crematorium furnace with top and lateral air supply - has brick cremation chamber within reinforcing steel structure
Inventor: FAELLING KJELL
IPC: F23G1/00
Filed: 1973-06-29
Abstract: The steel structure of the cremating furnace is constructed from individual components, such as end walls which are made from steel profiles and plates. These walls are equipped with entry doors and a working door. Air flow channels are arranged along both longitudinal sides and one end wall of the furnace. Air supply pipes are connected to these channels and this air is ducted into the inner chamber of the furnace. Air supply channels are divided by means of throttle valves into sections. One section delivers to bottom part of oven, the other section to the top part.