Patents Assigned to ABG Semca
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Patent number: 5322371Abstract: The invention relates to a fluid film bearing, and more particularly the improvement of the load capacity and stability of such a bearing.The fluid film bearing comprises a housing 7 and several bearing sub-assemblies each comprising a flexible leaf 2, a leaf reinforcing element and a support bar (5), the sub-assemblies of the bearing being fixed to the housing by insertion of each bar 5 into a groove provided in the housing. The reinforcing element comprises an upper stiffener 3 secured to the bar of a sub-assembly, and a lower stiffener 4 secued to the bar of an adjacent sub-assembly, the two stiffeners 3 and 4 overlapping on at least one part of one of their faces. The bearing is advantageously provided with a preloading spring 6.The bearing is particularly useful in turbo engines, especially whey they form part of aircraft, more particularly military aircraft.Type: GrantFiled: August 24, 1991Date of Patent: June 21, 1994Assignee: ABG Semca SAInventors: Jacques Signoret, Pascal Hermel, Andre Jambou
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Patent number: 5105729Abstract: A controlled valve with automatic opening and an aircraft having a valve of this type. The controlled valve enables the regulation of pressures or flow rates. Furthermore, the control valve can open autonomously under the effect of a pressure difference exceeding a pre-determined threshold. Thus, it enables fast balancing of pressures if the pressure difference should exceed a threshold beyond which, for example, an installation may be put in danger. The controlled valve can be applied to any device for the regulation of pressure and/or flow rate between a chamber and the exterior or between two chambers having a safety balancing device. The disclosure can be applied notably in aeronautical construction, the construction of petroleum refineries, of fluid distribution devices and of chemical reactors.Type: GrantFiled: April 14, 1989Date of Patent: April 21, 1992Assignee: ABG-SemcaInventors: Jacques Signoret, Jacques Fraisse, Bruno Baroux, Francis Carla
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Patent number: 5046686Abstract: A controlled valve with clack valve and a clack valve including a controlled valve, as well as an aircraft with a controlled valve of this type, are disclosed. The disclosed controlled valve has a clack valve on its surface. The controlled valve is used for the "fine" regulation of pressure or flow rate. The clack valve enables safety balancing of pressure. The incorporation of the clack valve in the controlled valve or of the controlled valve in the clack valve makes it possible to have only one opening in the partition surface and, thus, to reduce the weight and cost while increasing security. The disclosed device can be applied to any device for the regulation of pressure and/or flow rate between a chamber and the exterior or between two chambers having a safety balancing device. The disclosure can be applied notably in aeronautical construction, the construction of petroleum refineries, of fluid distribution devices and of chemical reactors.Type: GrantFiled: April 14, 1989Date of Patent: September 10, 1991Assignee: ABG-SEMCAInventors: Francis Carla, Bruno Baroux, Jacques Fraisse, Jacques Signoret
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Patent number: 5032028Abstract: The invention relates to a fluid film bearing and to a process for its production.The invention relates to a hydrodynamic fluid film bearing formed between a plurality of sheets (3) fixed to a casing (5) and a shaft (6) in rotation with respect to said casing. The invention has as an object to completely dissociate the control of the radial rigidity of the bearing in the startup phase and that in the rotational phase at working speed.A low rigidity, negligible or zero of the sheets (3) permits limiting the application forces of the sheets against the shaft and thus to reduce the wear upon startup of the bearing. After startup, the rotation of the shaft (6) at the interior of the sheet (3) causes a displacement of the sheets (3) which separate from the shaft (6) by the interposition of a hydrodynamic film of air. The new position occupied by the sheets (3) causes a return of the force of the sheets (3) by the restraining elements (4), as for example of leaf springs (40, 41, 42 or 43).Type: GrantFiled: September 18, 1989Date of Patent: July 16, 1991Assignee: ABG Semca S.A.Inventors: Serge Riazuelo, Andre Jambou, Francois Thomas, Christian Malabre
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Patent number: 4960249Abstract: A controlled valve with the possibility of autonomous opening and an aircraft having a valve of this type are disclosed. The controlled valve enables the regulation of presures or flow rates. Furthermore, the disclosed control valve can open autonomously under the effect of a pressure difference exceeding a pre-determined threshold. Thus, it enables fast balancing of pressures if the pressure difference should exceed a threshold beyond which, for example, an installation could be in danger. The disclosed device can be applied to any device for the regulation of pressure and/or flow rate between a chamber and the exterior or between two chambers having a safety balancing device. The disclosure can be applied notably in aeronautical construction, the construction of petroleum refineries, fluid distribution devices and chemical reactors.Type: GrantFiled: May 24, 1989Date of Patent: October 2, 1990Assignee: Abg SemcaInventors: Jacques Signoret, Jacques Fraisse, Bruno Baroux, Francis Carla
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Patent number: 4899984Abstract: Disclosed is an obturator ring for valves of the butterfly valve type which has, mounted in a groove made on the periphery of the flap, a split ring-shaped seal working with a first elastic member applying the seal against the valve body and a second elastic member applying the seal against the groove, the elastic members being made of a refractory material.Type: GrantFiled: September 30, 1988Date of Patent: February 13, 1990Assignee: ABG SemcaInventors: Philippe Strickler, Jean-Michel Renaux
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Patent number: 4893748Abstract: A heating method and device for vehicles with limited power requirement, more particularly for light vehicles such as helicopters and light aircraft. For limiting the weight of the auxiliary airborne equipment, the invention provides at least partially heating of the cabin by reversal of the cooling cycle. For that a valve diverts coolant fluid to the evaporator for reheating the recirculation air of the cabin.Type: GrantFiled: February 8, 1988Date of Patent: January 16, 1990Assignee: ABG SEMCAInventor: David Balducci
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Patent number: 4875345Abstract: An air-conditioning installation for aircraft, especially for passenger aircraft is disclosed. The energy resulting from the expansion of the air that leaves the cabin is used to actuate at least one element of the installation such as an expansion turbine or a compressor. The temperature of the air leaving the expansion turbine is lower than the temperature of the external air.Type: GrantFiled: January 15, 1988Date of Patent: October 24, 1989Assignee: ABG SemcaInventor: Jacques Signoret
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Patent number: 4850721Abstract: A hydrodynamic bearing to support and guide a rotating machine shaft is disclosed. This bearing comprises, in the bore of a bearing body, an independent cartridge, designed to form the internal functional set of the bearing, said cartridge consisting of thin, curved foils fixed with respect to one another with overlapping parts, so as to make an independent unit having, firstly, an internal floating surface adapted to being placed around the shaft and to conditioning, during the rotation of the shaft, the formation of a fluid film between the shaft and the internal surface and, secondly, a peripheral external surface with a diameter corresponding to that of the bore of the bearing body. It further has means to immobilize the cartridge inside the bore in rotation and in internal translation. Furthermore, the external surface of the cartridge is surrounded with a flexible foil, fixed by one of its ends on an external generatrix of the cartridge, the other end being free.Type: GrantFiled: October 19, 1988Date of Patent: July 25, 1989Assignee: ABG SemcaInventors: Christian Malabre, Andre Jambou
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Patent number: 4743126Abstract: The invention provides a process for producing hydrodynamic bearings for supporting and guiding rotary machine shafts. The process consists in previously manufacturing a self-contained cartridge formed of thin foils fixed with respect to each other and partially overlapping so as to form an internal floating surface adapted to generate the formation of a fluid film between said surface and the shaft mounted therein; the cartridge comprises an external peripheral surface of a diameter corresponding to that of the bore of the bearing shell and is inserted in this bore then secured against rotation and axial translation with respect thereto, more especially by abutment means situated in the edge region.Type: GrantFiled: May 29, 1986Date of Patent: May 10, 1988Assignee: ABG SemcaInventors: Jacques Soum, Christian Malabre
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Patent number: 4665715Abstract: A conditioning method and an air-conditioner for carrying out such method which comprises, in a compression, cooling and expansion cycle, a drying operation performed prior to the expansion. According to the invention, a dryer is alternately operated in an adsorption phase and a regeneration phase, depending on whether it communicates with the outlet or the inlet of a heat exchanger. The present method and device can be advantageously applied to environment control in the field of aircraft and automotive vehicle air conditioning.Type: GrantFiled: January 15, 1986Date of Patent: May 19, 1987Assignee: ABG SemcaInventor: Jacques Signoret
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Patent number: 4637472Abstract: Rapid discharge extinguisher comprising a container containing an inhibition agent, especially a liquid that is vaporized when it is expanded and a pressurized gas such as nitrogen, a through cover sealing the container, and an explosive charge in order to shear the through cover, the explosive charge acting by shock wave and being disposed inside the container, adjacent to the through cover and the discharge time being about 35 milliseconds.Type: GrantFiled: June 6, 1985Date of Patent: January 20, 1987Assignee: ABG SemcaInventor: Fredy Decima
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Patent number: 4616388Abstract: The invention provides a process for producing hydrodynamic bearings for supporting and guiding rotary machine shafts. The process consists of pre-manufacturing a self-contained cartridge formed of thin foils, each fixed to its two next adjacent foils at locations staggered along said foils at overlapping parts thereof, so as to form an internal floating surface adapted to generate the formation of a fluid film between this surface and a shaft mounted therein. The cartridge has an external peripheral surface with a diameter corresponding to that of the bore of the bearing shell, and is inserted in this bore and then secured against rotation and axial translation with respect thereto by an abutment situated in the end region.Type: GrantFiled: May 23, 1983Date of Patent: October 14, 1986Assignee: ABG SemcaInventors: Jacques Soum, Christian Malabre
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Patent number: 4246759Abstract: A method and apparatus for conditioning air in an enclosure wherein the air is passed through a heat exchanger where the air is heated or cooled by a primary gas in the heat exchanger; the primary gas flows through a conditioning power circuit wherein the primary gas is compressed thereby heating the same; the compressed primary gas is then either passed through the heat exchanger to heat the air or is further compressed, cooled and allowed to expand to cool the primary gas which then passes through the heat exchanger to cool the air.Type: GrantFiled: April 25, 1977Date of Patent: January 27, 1981Assignee: ABG-Semca S.A.Inventor: Jacques Signoret
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Patent number: 4142408Abstract: An apparatus is disclosed for measuring axial thrust of a rotating, bearing supported machine shaft. The support bearings are operatively coupled through a shiftable crosspiece to a spring leaf upon which is mounted a variable resistance type strain gauge connected to an extensometric bridge circuit which provides an output indication of the axial thrust.Type: GrantFiled: March 28, 1977Date of Patent: March 6, 1979Assignee: ABG-SEMCA S.A.Inventor: Serge Riazuelo