Patent application number | Description | Published |
20090088911 | METHOD AND SYSTEM FOR MANEUVERING AN AIRCRAFT BY SHIFTING ITS CENTER OF GRAVITY - A method to maneuver an aircraft in flight, in which the center of gravity of the aircraft is shifted by transferring fuel from at least one first fuel tank to at least one second fuel tank of the aircraft. A system implementing this method, the system including: at least one first fuel tank and at least one second fuel tank, a flight control unit capable of sending out a maneuver command upon being handled. A computer capable, as a function of this command, of determining a quantity of fuel to be transferred from the first tank to the second tank, at least one means of transfer connecting the first and second tanks and being controlled by the computer, to transfer the fuel from the first tank to the second tank | 04-02-2009 |
20090308977 | AIRCRAFT DOORWAY - The invention concerns a doorway in an aircraft fuselage comprising a door frame in which a door is mounted, this frame comprising an outer framework, an inner framework and a core placed between the inner framework and the outer framework, capable of absorbing energy from an impact, the core being a stiffener made of composite material having an accordion shape. | 12-17-2009 |
20100302072 | HAZARD AREA PROTECTION SYSTEM - A hazard area protection system wherein it includes a projection device designed to project a light beam on at least part of the surface area on the ground of the hazard area. | 12-02-2010 |
20110154909 | METHOD AND DEVICE FOR STEADYING AN AIRCRAFT - A method for steadying an aircraft using jack props, in which: a number and location of the props to be used is determined as a function of an area of operation, on the basis of a prop map; strain gauges arranged on the structure of the aircraft are used; predetermined props that are to be used are fitted; the strains measured by at least one strain gauge situated in the operating zone are checked; and the load applied by at least one prop positioned in the operating zone is regulated according to the strains measured by the gauge and so as to minimize the strains. A steadying device can implement the method. | 06-30-2011 |
Patent application number | Description | Published |
20090220398 | CATALYST COMPOSITIONS FOR THE TREATMENT OF VEHICULAR EXHAUST GASES COMPRISE ZIRCONIUM OXIDE AND CERIUM OXIDE, AND HAVE A HIGH REDUCIBILITY AND A STABLE SPECIFIC SURFACE AREA - Catalyst compositions for the treatment of vehicular exhaust gases are based on zirconium and cerium oxides, have a cerium oxide content of at most 50% by weight, a level of reducibility of at least 95% after calcination in air at 600°, and a specific surface area after calcination for 4 hours at 1100° of at least 15 m | 09-03-2009 |
20090274599 | CATALYTIC COMPOSITIONS COMPRISING THE OXIDES OF ZIRCONIUM, CERIUM, YTTRIUM, LANTHANUM AND OTHER RARE EARTHS - Catalytic compositions useful, e.g., for the treatment of internal combustion engine exhaust gases, are based on zirconium oxide in a weight proportion of at least 25%, from 15% to 60% of cerium oxide, from 10% to 25% of yttrium oxide, from 2% to 10% of lanthanum oxide and from 2% to 15% of another rare earth oxide, have a specific surface of at least 15 m | 11-05-2009 |
20100040523 | HIGH SPECIFIC SURFACE/REDUCIBILITY CATALYST/CATALYST SUPPORT COMPOSITIONS COMPRISING OXIDES OF ZIRCONIUM, CERIUM AND LANTHANUM AND OF YTTRIUM, GADOLINIUM OR SAMARIUM - Catalyst/catalyst support composition essentially consist of oxides of zirconium, cerium and lanthanum and of another rare earth selected from among yttrium, gadolinium and samarium, having a proportion of the lanthanum oxide and the oxide of the other rare earth of at least 15% and specific surfaces of at least 40 m | 02-18-2010 |
20100247407 | HIGHLY ACIDIC COMPOSITIONS COMPRISING ZIRCONIUM AND SILICON OXIDES AND AN OXIDE OF AT LEAST ONE OTHER ELEMENT SELECTED FROM AMONG TITANIUM, ALUMINUM, TUNGSTEN, MOLYBDENUM, CERIUM, IRON, TIN, ZINC, AND MANGANESE - Compositions useful for treating the exhaust gases of diesel engines contain zirconium oxide, silicon oxide and at least one oxide of at least one element M selected from among titanium, aluminum, tungsten, molybdenum, cerium, iron, tin, zinc, and manganese, in the following mass proportions of these different elements: silicon oxide: 5%-30%; M-element oxide: 1%-20%; the balance being zirconium oxide; such compositions also have an acidity, as measured by the methylbutynol test, of at least 90% and are prepared by placing a zirconium compound, a silicon compound, at least one M-element compound and a basic compound in a liquid medium, thereby generating a precipitate, maturing the precipitate in a liquid medium and separating and calcining the precipitate. | 09-30-2010 |
20100247411 | HIGHLY ACIDIC COMPOSITIONS COMPRISING ZIRCONIUM OXIDE, TITANIUM OXIDE AND TUNGSTEN OXIDE AND TREATMENT OF EXHAUST GASES THEREWITH - Compositions useful for treating exhaust gases contain zirconium, titanium and tungsten oxides, and optionally the oxide of an element M selected from among silicon, aluminum, iron, molybdenum, manganese, zinc, tin, and rare earths in the following mass proportions of these different elements: titanium oxide: 20%-50%; tungsten oxide: 1%-20%, M-element oxide: 1%-20%; the balance being zirconium oxide; such compositions are prepared by placing in a liquid medium a zirconium compound, a titanium compound, optionally an M-element compound and a basic compound, adding a tungsten compound to the precipitate suspension thus obtained and having a pH value ranging from 1 to 7, maturing the suspension resulting from the preceding step, and optionally separating the precipitate and calcining same. | 09-30-2010 |
20110097252 | COMPOSITIONS BASED ON CERIUM OXIDE, ZIRCONIUM OXIDE AND, OPTIONALLY, ANOTHER RARE EARTH OXIDE, HAVING A SPECIFIC RAISED SURFACE AT 1100.degree.C, METHOD FOR THE PRODUCTION AND USE THEREOF AS A CATALYST - The inventive composition, according to a first embodiment, consists essentially of a cerium oxide and a zirconium oxide in an atomic ratio Ce/Zr of at least 1. According to a second embodiment, said composition is based on cerium oxide, zirconium oxide with an atomic ratio Ce/Zr of at least 1 and at least one rare earth oxide other than cerium. After calcination at 1100° C., said composition has a specific surface of at least 9 m | 04-28-2011 |
20110166014 | Composition Based on Cerium Oxide and On Zirconium Oxide Having A High Reducibility and High Specific Surface, Methods for the Preparation Thereof and Use As A Catalyst - The inventive composition is based on cerium oxide and on zirconium oxide in an atomic proportion Ce/Zr of at least 1, and has a reducibility rate of at least 70% and a surface area of at least 15 m; 2; /g. This composition is obtained by a method in which: a mixture is made containing cerium and zirconium compounds; this mixture is provided with a basic compound whereby obtaining a precipitate that is heated in an aqueous medium; a surfactant-type additive or a polyethylene glycol or a carboxylic acid is added to this medium or to the separated precipitate; the mixture is ground; the precipitate obtained thereof is calcined under inert gas or vacuum, in a first period of time, at a temperature of at least 850 .iC and then under an oxidizing atmosphere, in a second period of time, at a temperature of at least 400 .° C. | 07-07-2011 |
20120035048 | Composition Based on Zirconium Oxides, Praseodymium, Lanthanum or Neodymium, Method for the Preparation and Use Thereof in a Catalytic System - The composition is based on zirconium oxide and at least one additive selected from zirconium oxide and at least one additive chosen from praseodymium, lanthanum or neodymium oxides, has a specific surface of at least 29 m 2/g after calcination at 1000° C. during a period of 10 hours and is obtained by a method wherein a mixture of zirconium compounds and additive is precipitated with a base; the medium thus obtained, containing a precipitate, is heated and a compound chosen from anionic surfactants, non-ionic surfactants, polyethylene glycols, carboxylic acids and the salts thereof and surfactants such as the ethoxylates of caroboxymethyl fatty alcohols is added to the compound and the precipitate is calcinated; the composition can be used as a catalyst. | 02-09-2012 |
20120328500 | HIGHLY ACIDIC COMPOSITIONS COMPRISING ZIRCONIUM AND SILICON OXIDES AND AN OXIDE OF AT LEAST ONE OTHER ELEMENT SELECTED FROM AMONG TITANIUM, ALUMINUM, TUNGSTEN, MOLYBDENUM, CERIUM, IRON, TIN, ZINC, AND MANGANESE - Compositions useful for treating the exhaust gases of diesel engines contain zirconium oxide, silicon oxide and at least one oxide of at least one element M selected from among titanium, aluminum, tungsten, molybdenum, cerium, iron, tin, zinc, and manganese, in the following mass proportions of these different elements: silicon oxide: 5%-30%; M-element oxide: 1%-20%; the balance being zirconium oxide; such compositions also have an acidity, as measured by the methylbutynol test, of at least 90% and are prepared by placing a zirconium compound, a silicon compound, at least one M-element compound and a basic compound in a liquid medium, thereby generating a precipitate, maturing the precipitate in a liquid medium and separating and calcining the precipitate. | 12-27-2012 |
20130142713 | COMPOSITION CONTAINING OXIDES OF ZIRCONIUM, CERIUM AND AT LEAST ONE OTHER RARE EARTH AND HAVING A SPECIFIC POROSITY, METHOD FOR PREPARING SAME AND USE THEREOF IN CATALYSIS - A composition is described that includes zirconium oxide, cerium oxide and yttrium oxide, or zirconium oxide, cerium oxide and at least two oxides of two rare earths different from cerium in a mass proportion of at least 20% of zirconium oxide and of at most 70% of cerium oxide, wherein the composition further includes, after calcination at 900° C. for 4 hours, two populations of pores having respective diameters centered, for the first population, about a value of 20 nm to 40 nm and, for the second, about a value of 80 nm to 200 nm. The composition can be used for processing exhaust gases of internal combustion engines. | 06-06-2013 |
20140072492 | COMPOSITION BASED ON ZIRCONIUM OXIDE AND ON AT LEAST ONE OXIDE OF A RARE EARTH OTHER THAN CERIUM, HAVING A SPECIFIC POROSITY, PROCESSES FOR PREPARING SAME AND USE THEREOF IN CATALYSIS - A composition of zirconium oxide and at least one oxide of a rare earth other than cerium is described. The zirconium oxide has a weight proportion of at least 50% and, after calcination at a temperature of 900° C. for 4 hours, the composition exhibits two populations of pores of which their respective diameters are centered. The diameter of the first pore has a value of from 20 nm to 40 nm and in the second pore has a value of from 80 nm to 200 nm. Further described is how the composition can be used for treating the exhaust gases of internal combustion engines. | 03-13-2014 |