Abrégé

In the invention, stator blades are arranged in such a manner that respective intervals between the adjacent stator blades (SV) become unequal at least partly. If the stator blades are arranged as mentioned above, there are formed wave fronts having different moving directions and phases, and these wave fronts are interfered with each other so as to be attenuated. Accordingly, an interference noise is reduced. Therefore, in accordance with the invention, it is possible to reduce an interference noise without enlarging a rotor stator blade interval as well as reducing a used amount of a sound absorption material.

Classes IPC  ?

• F01D 9/02 - InjecteursLogement des injecteursAubes de statorTuyères de guidage

Abrégé

A turbofan engine of the invention is provided with a fan first-stage moving blade for taking an air therein, and a spinner rotationally driving the fan first-stage moving blade, the spinner has a spiral blade extending spirally to an outer side in a radial direction, sucking the air from a front face of the spinner and supplying the air to the fan first-stage moving blade. Further, the fan first-stage moving blade and the spinner are integrally coupled, and the spiral blade and the fan first-stage moving blade are formed such that blade surfaces are smoothly connected.

Classes IPC  ?

• F04D 17/06 - Pompes hélicocentrifuges

Abrégé

An electrode for an electrical-discharge surface-treatment method is molded with a metallic powder or a metallic compound powder having an average grain diameter of 6 micrometers to 10 micrometers. A coat on a surface of a workpiece is formed with a material constituting the electrode or a substance that is generated by a reaction of the material due to a pulse-like electrical discharge. The coat is built up with a material containing metal as a main constituent under conditions of a width of a current pulse for the pulse-like electrical discharge in a range of 50 microseconds to 500 microseconds and a peak of the current pulse equal to or less than 30 amperes.

Classes IPC  ?

• C23C 14/34 - Pulvérisation cathodique

Abrégé

0 during stopped feeding of fluidizing air to an external heat exchanger 7; a flow rate of the bed material as circulation quantity is determined from the time and an accumulated amount of the bed material based on an inner diameter D of the downcomer 5.

Classes IPC  ?

• F23C 10/06 - Appareils dans lesquels la combustion a lieu dans un lit fluidisé de combustible ou d'autres particules avec des moyens spécialement adaptés pour obtenir ou activer un mouvement de circulation des particules à l'intérieur du lit ou pour remettre en circulation les particules entraînées à l'extérieur du lit les particules étant entraînées vers une section, p. ex. une section d'échange de chaleur ou une conduite de retour, au moins partiellement séparée de la zone de combustion, avant d'être réintroduites dans la zone de combustion le mouvement de circulation étant activé en induisant différents degrés de fluidisation en différents endroits du lit

Abrégé

A three-gear type gear pump or double gear pump wherein the first driven gear and the second driven gear are opposed to one another with the driving gear disposed between them, wherein the number of teeth of the driving gear is greater than the number of teeth of each of the first driven gear and the second driven gear.

Classes IPC  ?

• F04C 18/00 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles
• F04C 2/00 - Machines ou pompes à piston rotatif

Abrégé

A three-gear type gear pump or double gear pump wherein the first driven gear and the second driven gear are opposed to one another with the driving gear disposed between them, wherein the number of teeth of the driving gear is greater than the number of teeth of each of the first driven gear and the second driven gear.

Classes IPC  ?

• F02C 7/22 - Systèmes d'alimentation en combustible
• F04C 2/18 - Machines ou pompes à piston rotatif du type à engrènement extérieur, c.-à-d. avec un engagement des organes coopérants semblable à celui d'engrenages dentés d'un autre type qu'à axe interne avec des pistons rotatifs dentés à formes de dents semblables

Abrégé

A turbofan engine has a fan on a front side thereof and a turbine driving the fan. The turbofan engine includes a disk rotationally driven by the turbine, a spinner detachably mounted at a front side of the disk, a spiral blade integrally mounted on a surface of the spinner, and a rear moving blade detachably mounted on an outer circumferential surface of the disk. The spiral blade and the rear moving blade form a first-stage moving blade of the fan.

Classes IPC  ?

• F02K 1/38 - Introduction d'air à l'intérieur du jet

Abrégé

A wall configuration of an axial-flow machine which can reduce the secondary flow loss is provided. A trough is formed between a blade and another blade in the blade row and extends in at least an axial direction of the blade row. The region where the trough is formed is axially between a leading edge and a trailing edge of the blade. A center line of the trough has a curvature in the same direction as a camber line of the blade. A maximum amplitude of the trough is located adjacent to an axial center of the blade or located axially between the axial center and the leading edge of the blade.

Classes IPC  ?

• F01D 9/02 - InjecteursLogement des injecteursAubes de statorTuyères de guidage

Abrégé

For forming a coating exhibiting excellent abrasion resistance over a temperature range from low temperature to high temperature, there is provided a method comprising the steps of preparing a metal powder containing a component capable of exhibiting lubricity upon oxidation thereof; oxidizing the metal powder so that the amount of oxygen contained in the metal powder is increased from 6 wt.% to 14 wt.%; and melting or semi-melting the metal powder so as to form on a treatment object a coating having such a structure that in a unit area of molten or semi-molten state, there are distributed regions of 3 wt.% or less oxygen content and regions of 8 wt.% or more oxygen content, the content of oxygen as a whole after the melting or semi-melting in the coating ranging from 5 wt.% to 9 wt.%.

Classes IPC  ?

• C23C 26/00 - Revêtements non prévus par les groupes

Abrégé

This invention provides a PCVD process, which can form microcrystalline silicon using hydrogen gas at a low flow rate, and provides a microcrystalline silicon solar cell at lower cost. The method for microcrystalline silicon formation by the PCVD process is characterized by comprising arraying a plurality of antennas, both ends of which are connected respectively to a high-frequency power supply and a ground, within one plane in a vacuum chamber to constitute an array antenna structure, disposing the substrate so as to face the array antenna, raising the temperature of the substrate to 150 to 250ºC, introducing a mixed gas containing hydrogen gas and silane gas into the system, supplying a high-frequency electric power to the plurality of antenna to generate plasma, and regulating the hydrogen gas/silane gas flow rate ratio in the range of 1 to 10 to form, on the substrate, such a microcrystalline silicon film that the ratio between a crystalline silicon-derived Raman scattering intensity at a wavenumber around 520 cm-1, Ic, and a noncrystalline silicon-derived Raman scattering intensity at a wavenumber around 480 cm-1, Ia, i.e., Ic/Ia, is 2 to 6.

Classes IPC  ?

• C23C 16/509 - Revêtement chimique par décomposition de composés gazeux, ne laissant pas de produits de réaction du matériau de la surface dans le revêtement, c.-à-d. procédés de dépôt chimique en phase vapeur [CVD] caractérisé par le procédé de revêtement au moyen de décharges électriques utilisant des décharges à radiofréquence utilisant des électrodes internes
• C23C 16/24 - Dépôt uniquement de silicium
• H01L 31/04 - Dispositifs à semi-conducteurs sensibles aux rayons infrarouges, à la lumière, au rayonnement électromagnétique d'ondes plus courtes, ou au rayonnement corpusculaire, et spécialement adaptés, soit comme convertisseurs de l'énergie dudit rayonnement e; Procédés ou appareils spécialement adaptés à la fabrication ou au traitement de ces dispositifs ou de leurs parties constitutives; Leurs détails adaptés comme dispositifs de conversion photovoltaïque [PV]

Abrégé

b side of the mixing portion 3 than the swirling flow. The burner for combustion chamber and combustion method of the present invention can shorten the flame length in the central axial direction by improving the combustion efficiency even during low loading and shorten the overall length of the burner for combustion chamber in the central axial direction.

Classes IPC  ?

• F02C 1/00 - Ensembles fonctionnels de turbines à gaz caractérisés par l'utilisation de gaz chauds ou de gaz sous pression non chauffés, comme fluide de travail
• F02G 3/00 - Ensembles fonctionnels de moteurs à produits de combustion à déplacement positif

Abrégé

b thereof, and spaced at a fixed angle in a peripheral direction. The fan 20 has a dovetail portion 22 extending at the same angle as an angle of the dovetail groove and capable of being fitted to the dovetail groove, in an inner end thereof.

Classes IPC  ?

• F01D 5/30 - Fixation des aubes au rotorPieds de pales
• F04D 29/34 - Montage des ailettes

Abrégé

a). An opening through which the oil shield member (21) passes is formed in the seal housing (25), and the seal housing (25) is brought into contact with the seal member (23) in an inner edge in a radial direction forming the opening.

Classes IPC  ?

• F04B 9/14 - Pompes caractérisées par leur mise en œuvre par la force musculaire
• F04B 17/02 - Pompes caractérisées par leur combinaison avec des machines motrices ou moteurs particuliers qui les entraînent ou par leur adaptation à ceux-ci entraînées par des moteurs éoliens
• F02B 33/44 - Passages pour la charge de la pompe vers l'orifice d'admission du moteur, p. ex. réservoirs

Abrégé

Stator vanes (SV) are arranged such that the intervals between adjacent stator vanes become unequal at least partially. When the stator vanes are arranged in such a manner, wave fronts having different traveling directions and phases are formed; since they interfere with each other and attenuate, interference noise is reduced. Consequently, the amount of acoustic material used can be reduced and interference noise can be reduced without enlarging the interval between rotor and stator vanes.

Classes IPC  ?

• F04D 29/54 - Moyens de guidage du fluide, p. ex. diffuseurs

Abrégé

The rolling mill comprises a pair of work rolls for rolling a plate material in the thickness direction, a guide for guiding the leading end of the plate material between the work rolls, and a rolling oil supply member for supplying rolling oil between the work rolls through a rolling oil passage formed within the guide. The rolling mill further comprises a temperature adjusted oil passage formed within the guide separately from the rolling oil passage, and a temperature adjusted oil supply member for applying temperature adjusted oil having a different temperature from the rolling oil to the work rolls through the temperature adjusted oil passage so as to control the crown rate of the work rolls, improving the controllability of the crown rate of the work roll.

Classes IPC  ?

• B21B 37/28 - Commande de la planéité ou du profil pendant le laminage de bandes, de feuilles ou de tôles

Abrégé

It is possible to obtain an electric discharge surface treating method and an electric discharge surface treating apparatus capable of forming a dense and relatively thick film coating. When a voltage is applied to the inter-electrode gap between an electric discharge electrode (21) and a work (22) from a first power supply (23) and an electric discharge occurs, a voltage for generating a second electric discharge current is supplied to the inter-electrode gap from a second power supply (28) for a short period of time. The second electric discharge current is superimposed on a first discharge current generated by the first power supply (23) and has a larger current value than the first current. This allows an electric discharge pulse current of a high-current value and a short pulse width having a rising speed of at least 40 A/쎽s or more to flow through the inter-electrode gap. As a result, only a necessary part of the electrode material is quickly melted and a large ratio of the melted electrode material can be contained in the electrode material migrating to the work side by the thermal energy of electric discharge or a compound of the electrode material, so that a film coating of the melted metal is formed on the surface of the work.

Classes IPC  ?

• C23C 26/00 - Revêtements non prévus par les groupes

Abrégé

There are provided with a motor rotor (22) fixed to a turbine shaft (12) and rotating together with the turbine shaft, a motor stator (24) surrounding the motor rotor and fixed within a bearing housing (16), an inverted (26) converting a dc power into an ac power, and an inverter controller (28) controlling a frequency and a voltage of the ac power by the inverter. The inverter and the inverter controller are accommodated in a driver container (29), and are coupled to a compressor housing (20) by an insulating coupling member (30).

Classes IPC  ?

• F02B 39/00 - Parties constitutives, détails ou accessoires non couverts par les groupes , et relatifs aux pompes d'alimentation ou de balayage entraînées

Abrégé

A defect generated at a portion to be treated of a machine component is removed, a porous deposition is formed by employing a molded electrode composed of a molded body or such molded from powder of a metal or such and generating a pulsing electric discharge between a removed portion from which the defect in the machine component is removed and the molded electrode so that a material of the molded electrode or such is deposited or so at the removed portion of the machine component by energy of the electric discharge and finish machining to required dimension is carried out so as to make a thickness of the deposition to be a predetermined thickness.

Classes IPC  ?

• B23H 1/00 - Usinage par décharge électrique, c.-à-d. enlèvement de métal au moyen de séries de décharges électriques à cadence élevée entre une électrode et une pièce en présence d'un fluide diélectrique
• B05D 3/14 - Traitement préalable des surfaces sur lesquelles des liquides ou d'autres matériaux fluides doivent être appliquésTraitement ultérieur des revêtements appliqués, p. ex. traitement intermédiaire d'un revêtement déjà appliqué, pour préparer les applications ultérieures de liquides ou d'autres matériaux fluides par des moyens électriques
• B23P 6/04 - Réparation de pièces ou de produits métalliques brisés ou fissurés, p. ex. de pièces de fonderie
• F01D 5/28 - Emploi de matériaux spécifiésMesures contre l'érosion ou la corrosion

Abrégé

An axial flow compressor is provided with a rotor blade raw (10) which is formed such that an outlet cross sectional area is larger than an inlet cross sectional area so as to reduce a speed in an axial direction and reduce a pressure difference between a positive pressure surface and a negative pressure surface. Further, a stator blade row (11) is provided in a downstream side of the rotor blade row (10). An output cross sectional area of the stator blade row (11) is structured such as to be smaller than an inlet cross sectional area of the rotor blade row (10).

Classes IPC  ?

• F01D 5/02 - Organes de support des aubes, p. ex. rotors
• F01D 5/20 - Extrémités de pales spécialement façonnées en vue d'obturer l'espace entre ces extrémités et le stator
• F01D 11/00 - Prévention ou réduction des pertes internes du fluide énergétique, p. ex. entre étages
• F01D 11/08 - Prévention ou réduction des pertes internes du fluide énergétique, p. ex. entre étages pour obturations de l'espace entre extrémités d'aubes du rotor et stator
• F04D 29/38 - Ailettes

Abrégé

An axial flow compressor is provided with a rotor blade row (10) which is formed such that an outlet cross sectional area is larger than an inlet cross sectional area so as to reduce a speed in an axial direction and reduce a pressure difference between a positive pressure surface and a negative pressure surface. Further, a stator blade row (11) is provided in a downstream side of the rotor blade row (10). An output cross sectional area of the stator blade row (11) is structured such as to be smaller than an inlet cross sectional area of the rotor blade row (10).

Classes IPC  ?

• F01D 11/08 - Prévention ou réduction des pertes internes du fluide énergétique, p. ex. entre étages pour obturations de l'espace entre extrémités d'aubes du rotor et stator

Abrégé

A turbofan engine, comprising a fan 1-stage moving blade for taking in air and a spinner rotatingly driving the fan 1-stage moving blade. The spinner comprises a spiral vane spirally extending to the radial other side, sucking air from the front of the spinner, and supplying it to the fan 1-stage moving blade. Also, the fan 1-stage moving blade and the spinner are integrally connected to each other, and the spiral vane and the fan 1-stage moving blade are so formed that their surfaces can be smoothly joined to each other.

Classes IPC  ?

• F02C 7/04 - Entrées d'air pour ensembles fonctionnels de turbines à gaz ou de propulsion par réaction
• F02K 3/06 - Ensembles fonctionnels comportant une turbine à gaz entraînant un compresseur ou un ventilateur soufflant dans lesquels une partie du fluide énergétique passe en dehors de la turbine et de la chambre de combustion l'ensemble fonctionnel comprenant des soufflantes carénées, c.-à-d. des soufflantes à fort débit volumétrique sous basse pression pour augmenter la poussée, p. ex. du type à double flux comprenant une soufflante avant
• F04D 29/32 - Rotors spécialement adaptés aux fluides compressibles pour pompes à flux axial
• F04D 29/38 - Ailettes

Abrégé

An electrode is used to perform discharge surface treatment of a work piece. The electrode is made of a green compact obtained by compression-molding an electrode material including powder of any of a metal, a metallic compound, and ceramics. The discharge surface treatment includes generating an electric discharge between the electrode and the work piece in an atmosphere of a machining medium and forming a film consisting of a machining material on a surface of a work piece using energy produced by the electric discharge. The powder has an average particle diameter of 5 micrometer to 10 micrometers, and contains 40 volume percent or more of a component not forming or less easily forming carbide as a component for forming the film on the work piece. The electrode has a hardness in a range of B to 8B tested with a pencil scratch test for a coating film.

Classes IPC  ?

• H05H 1/48 - Production du plasma utilisant un arc
• C23C 16/48 - Revêtement chimique par décomposition de composés gazeux, ne laissant pas de produits de réaction du matériau de la surface dans le revêtement, c.-à-d. procédés de dépôt chimique en phase vapeur [CVD] caractérisé par le procédé de revêtement par irradiation, p. ex. par photolyse, radiolyse ou rayonnement corpusculaire

Abrégé

An electrode for electric discharge surface treatment is a green compact formed by molding a metal powder, a metal compound powder, or a ceramic powder, and is used for electric discharge surface treatment in which an electric discharge is generated between the electrode and a work in dielectric fluid or air to form by the electric discharge energy on a surface of the work a coat of a material of the electrode or of a substance resulting from reaction of the material due to the electric discharge energy. The material of the electrode includes a material not desired to be carbonized and a material desired to be melted, and a particle diameter of the material not desired to be carbonized is larger than a particle diameter of the material desired to be melted.

Classes IPC  ?

• B23H 1/06 - Matériaux pour électrodes
• B05D 1/04 - Procédés pour appliquer des liquides ou d'autres matériaux fluides aux surfaces réalisés par pulvérisation comportant l'emploi d'un champ électrostatique

Abrégé

An electrode for electric discharge surface treatment, in which a pulse-like electric discharge is caused between the electrode and a work in a dielectric fluid or an atmosphere, and in which a coat of an electrode material or a substance that is generated by a reaction of the electrode material due to an electric discharge energy is formed on a surface of the work, is a molded powder that is formed by molding a material powder including a metallic powder, a metallic compound powder, and a conductive ceramic powder. A powder solid that is formed as a result of coagulation of the material powder, and that is included in the molded powder has a diameter shorter than a distance between the electrode and the work.

Classes IPC  ?

• B23K 1/04 -

Abrégé

3) and/or hexaboron nitride (hBN). An electrode formed by compression molding of the high-temperature hard material, and the high-temperature lubricating material containing at least one of Cr and hBN and having the lubricating property at the high temperature is used as the electrode for the electro-discharge surface treatment.

Classes IPC  ?

• H01T 14/00 - Éclateurs non prévus dans les groupes
• C23C 26/02 - Revêtements non prévus par les groupes par application au substrat de matériaux fondus
• C23C 30/00 - Revêtement avec des matériaux métalliques, caractérisé uniquement par la composition du matériau métallique, c.-à-d. non caractérisé par le procédé de revêtement
• B23K 9/18 - Soudage à l'arc submergé
• B23K 9/04 - Soudage pour d'autres buts que l'assemblage de pièces, p. ex. soudage de rechargement
• C23C 26/00 - Revêtements non prévus par les groupes

Abrégé

Installed on a top of a structure (1) is a base stand (11) against which damping body (3) movably rests via a linear guide mechanism (12). Mounted between the damping body (3) and the structure (1) or between the damping body (3) and a top of a support housing (14) erected on the structure (1) is a characteristic-frequency adjusting spring or springs (13) with an initial tension being applied vertically. Movement of the damping body (3) causes the spring or springs (13) to be obliquely and longitudinally expanded to apply horizontal component to the damping body (3) upon restoring.

Classes IPC  ?

• E04H 9/00 - Bâtiments, groupes de bâtiments ou abris conçus pour résister à des situations extérieures anormales, p. ex. à des bombardements, à des séismes ou à des climats extrêmes, ou pour se protéger de ces situations

Abrégé

A shroud segment is incorporated in a gas turbine engine so as to suppress influence of hot combustion gas on a turbine case which has a groove and a hook for engagement with the shroud segment. The shroud segment is provided with a back plate formed in an arc shape, a front end of the back plate being supported by the groove so as to allow displacement in an axial direction of the gas turbine engine, a slot circumferentially formed on an outer surface of the back plate, the slot being engaged with the hook so as to be immovable in the axial direction and a touching member integrally formed on an inner surface of the back plate for touching with a rotating turbine blade. The slot is configured so as to satisfy an inequality of v

Classes IPC  ?

• F01D 11/08 - Prévention ou réduction des pertes internes du fluide énergétique, p. ex. entre étages pour obturations de l'espace entre extrémités d'aubes du rotor et stator

Abrégé

Bi of the roll gap change amount.

Classes IPC  ?

• B21B 39/20 - Rotation, retournement ou autres manipulations analogues des pièces travaillées