Patents by Inventor Louis Muller

Louis Muller has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10760496
    Abstract: A method for isolating a tank of oil from a downstream portion of an oil supply system for a turbine engine is provided. The oil supply system includes the oil tank and a cutoff valve located between the oil tank and the downstream portion. The cutoff valve is configured to limit a flow of oil towards the downstream portion. The cutoff valve is fluidically linked to a fire extinguishing system by a fluid communication device. The method includes closing the cutoff valve in response to an increase in extinguishant pressure in the fluid communication device.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: September 1, 2020
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventor: Jean-Louis Muller
  • Patent number: 10633199
    Abstract: A process for pressurizing bulk material in an apparatus for pressurizing bulk material in a hopper; wherein the hopper is configured as a lock hopper containing a bulk material, wherein the apparatus comprises a source of pressurized gas, lines to convey the pressurized gas from the source of pressurized gas to one or more inlets of the lock hopper, a valve arrangement arranged in the lines, wherein the process is characterized in that said valve arrangement comprises at least two valves arranged in parallel, each valve being connected to a downstream Laval tuyere, and in that said valves are controlled to open in an operating sequence to provide pressurizing gas with an adjusted gas flow rate to the lock hopper.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: April 28, 2020
    Assignee: PAUL WURTH S.A.
    Inventors: Louis Schmit, Ben Muller
  • Patent number: 10527395
    Abstract: A detonator for use in a detonating system, which detonator includes discriminating and validating arrangements which sense and validate at least one characteristic of at least one parameter produced by at least one of a light, acoustic, vibratory, magnetic or electrical signal event, and an electronic timer which executes a timing interval in response thereto.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: January 7, 2020
    Assignee: DETNET SOUTH AFRICA (PTY) LTD
    Inventors: Albertus Abraham Labuschagne, Andre Louis Koekemoer, Christopher Malcolm Birkin, Craig Charles Schlenter, Elmar Lennox Muller
  • Publication number: 20190195605
    Abstract: A detonator for use in a detonating system, which detonator includes discriminating and validating arrangements which sense and validate at least one characteristic of at least one parameter produced by at least one of a light, acoustic, vibratory, magnetic or electrical signal event, and an electronic timer which executes a timing interval in response thereto.
    Type: Application
    Filed: February 27, 2019
    Publication date: June 27, 2019
    Inventors: Albertus Abraham Labuschagne, Andre Louis Koekemoer, Christopher Malcolm Birkin, Craig Charles Schlenter, Elmar Lennox Muller
  • Patent number: 10233798
    Abstract: The invention relates to a device (11) for cooling oil for a turbine engine, such as an aircraft turbojet or turboprop engine, characterized in that it comprises a duct (12) for circulating a flow of cold air (F1), means (16) for injecting oil into the duct, and means (19) for extracting the oil mixed with the flow of cold air (F1), located in the duct (12), downstream from the injection means (16).
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: March 19, 2019
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Jean-Louis Muller, Pierre Charles Mouton
  • Publication number: 20180209346
    Abstract: A method for isolating a tank of combustible fluid from a downstream portion of a fluid supply system for a turbine engine is provided. The supply system includes the tank and a cutoff valve located between the tank and the downstream portion. The cutoff valve is configured to limit a flow of fluid towards the downstream portion. The cutoff valve is fluidically linked to a fire extinguishing system by a fluid communication device. The method includes a step of closing the cutoff valve in response to an increase in extinguishant pressure in the fluid communication device.
    Type: Application
    Filed: July 26, 2016
    Publication date: July 26, 2018
    Applicant: SAFRAN AIRCRAFT ENGINES
    Inventor: Jean-Louis MULLER
  • Patent number: 9845706
    Abstract: A lubrication system for a turbopropeller, includes an oil feed device for at least one enclosure and one equipment, the equipment being connected to the feed device via a displacement pump, and a pressure restricting valve mounted downstream of displacement pump and in parallel to the equipment, such that oil flows through the equipment when the same is active, and through the valve when the equipment is inactive.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: December 19, 2017
    Assignee: SNECMA
    Inventors: Antoine Laigle, Jean-Louis Muller
  • Publication number: 20160153326
    Abstract: The invention relates to a device (11) for cooling oil for a turbine engine, such as an aircraft turbojet or turboprop engine, characterised in that it comprises a duct (12) for circulating a flow of cold air (F1), means (16) for injecting oil into the duct, and means (19) for extracting the oil mixed with the flow of cold air (F1), located in the duct (12), downstream from the injection means (16).
    Type: Application
    Filed: July 10, 2014
    Publication date: June 2, 2016
    Inventors: Jean-Louis Muller, Pierre Charles Mouton
  • Patent number: 8919499
    Abstract: A circuit and a method for feeding oil to rolling bearings in a turbomachine is disclosed. The circuit includes an oil supply; an oil duct connecting the supply to lubrication enclosures, each enclosure containing at least one rolling bearing; an oil feed pump located between the supply and the lubrication enclosures; an oil recovery pump connected downstream from each lubrication enclosure; a pressurizing valve placed in the duct between the oil feed pump and the lubrication enclosures, the pressurizing valve being adapted to open when the pressure at its inlet exceeds a predetermined threshold pressure; a branch connection duct connecting the inlet of the pressurization valve to one of the lubrication enclosures in order to feed it with oil; and a feeding device which feeds the lubrication enclosures at a small oil flow rate so long as the pressure at the inlet of the pressurization valve has not reached the predetermined threshold.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: December 30, 2014
    Assignee: SNECMA
    Inventors: Francois Delamour, Jean-Louis Muller, Nicolas Alain Bernard Potel, Jean-Louis Jacquerie, Albert Cornet
  • Publication number: 20140255171
    Abstract: A lubrication system for a turbopropeller, includes an oil feed device for at least one enclosure and one equipment, the equipment being connected to the feed device via a displacement pump, and a pressure restricting valve mounted downstream of displacement pump and in parallel to the equipment, such that oil flows through the equipment when the same is active, and through the valve when the equipment is inactive.
    Type: Application
    Filed: March 6, 2014
    Publication date: September 11, 2014
    Inventors: Antoine Laigle, Jean-Louis Muller
  • Patent number: 8436064
    Abstract: There is provided a predominantly open-cell polyurethane foam obtained from a predominantly open-cell polyurethane foam-forming reaction medium which comprises: a) at least one polyol; b) at least one polyisocyanate; c) at least one catalyst; d) water; e) a predominantly open-cell polyurethane foam-forming amount of at least one surfactant which is a balanced, substantially linear polyether-polysiloxane ABA? block copolymer; and, f) optionally, at least one additional component selected from the group consisting of other polymer and/or copolymer, chain extender, crosslinker, non-aqueous blowing agent, filler, reinforcement, pigment, tint, dye, colorant, flame retardant, antioxidant, antiozonant, UV stabilizer, anti-static agent, biocide and biostat.
    Type: Grant
    Filed: September 11, 2007
    Date of Patent: May 7, 2013
    Assignee: Momentive Performance Materials Inc.
    Inventors: William L. Brown, Paul L. Matlock, Louis Muller, Fabrice Ponthet
  • Publication number: 20130073171
    Abstract: A method for detection of contamination, by another fluid, of the oil circuit of a turbomachine fitted on an aircraft, the oil circuit including a tank provided with a device for measuring its oil level, piping which connects the tank to the various units of the turbomachine to be lubricated, and a device for putting the oil into circulation between the tank and the units, the turbomachine including a device for measuring its engine speed and a device for measuring the temperature of the oil at one point at least of the oil circuit. The oil level in the tank is monitored, an alert is triggered if the decrease in the oil level, measured over a given interval of time, becomes lower than a set minimum decrease. The decrease can be replaced by a simple increase in the oil level, without taking a duration of the monitoring into account.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 21, 2013
    Applicant: SNECMA
    Inventors: Jean-Louis Muller, Fran├žois Demaison, Nicolas Potel
  • Publication number: 20120024631
    Abstract: The invention relates to a circuit and a method for feeding oil to rolling bearings in a turbomachine, the circuit comprising an oil supply, an oil duct connecting the supply to lubrication enclosures, each containing at least one rolling bearing, an oil feed pump located between the supply and the lubrication enclosures, an oil recovery pump connected downstream from each lubrication enclosure, and a pressurizing valve placed in the duct between the oil feed pump and the lubrication enclosures, said pressurizing valve being adapted to open when the pressure at its inlet exceeds a predetermined threshold pressure; a branch connection duct connecting the inlet of the pressurization valve to one of the lubrication enclosures in order to feed it with oil; and means for feeding the lubrication enclosures at a small oil flow rate so long as the pressure at the inlet of the pressurization valve has not reached the predetermined threshold.
    Type: Application
    Filed: May 10, 2011
    Publication date: February 2, 2012
    Applicant: SNECMA
    Inventors: Fran├žois Delamour, Jean-Louis Muller, Nicolas Alain Bernard Potel
  • Publication number: 20090069457
    Abstract: There is provided a predominantly open-cell polyurethane foam obtained from a predominantly open-cell polyurethane foam-forming reaction medium which comprises: a) at least one polyol; b) at least one polyisocyanate; c) at least one catalyst; d) water; e) a predominantly open-cell polyurethane foam-forming amount of at least one surfactant which is a balanced, substantially linear polyether-polysiloxane ABA? block copolymer; and, f) optionally, at least one additional component selected from the group consisting of other polymer and/or copolymer, chain extender, crosslinker, non-aqueous blowing agent, filler, reinforcement, pigment, tint, dye, colorant, flame retardant, antioxidant, antiozonant, UV stabilizer, anti-static agent, biocide and biostat.
    Type: Application
    Filed: September 11, 2007
    Publication date: March 12, 2009
    Applicant: Momentive Performance Materials Inc.
    Inventors: William L. Brown, Paul L. Matlock, Louis Muller, Fabrice Ponthet
  • Patent number: 7046860
    Abstract: The regions of interest of images of both breasts of a patient are defined as regions of the image of minimal surface area and containing views of the breasts. These regions of interest are aligned for simultaneous display of the images. The display now allows simple and direct comparison of the images of both breasts, notably allowing immediate comparison of structural disorganizations within the two breasts.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: May 16, 2006
    Assignee: GE Medical Systems Global Technology Company, LLC
    Inventors: Elisabeth Soubelet, Sylvie Bothorel, Serge Louis Muller
  • Patent number: 6848826
    Abstract: A mammography apparatus has an examination arm with a radiation delivery head and an image receiver. The examination arm is mounted for iso-centric rotation in a plane. A support for the arm and a support column on which the support is mounted allow the height of this plane to be adjusted. Patients can be examined in the standing, leaning, sitting or laying position while in each case maintaining the axis of rotation of the examination arm on the axis of the (compressed) breast to be examined.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: February 1, 2005
    Assignee: GE Medical Systems Global Technology Company, LLC
    Inventors: Alain Marie, Serge Louis Muller
  • Patent number: 6818675
    Abstract: A process for preparing a polyurethane foam is provided which comprises reacting a polyisocyanate and an active hydrogen-containing component, including water and an organic polyol, in the presence of a catalytically effective amount of a delayed action amine catalyst system, and optionally an organotin catalyst. The delayed action catalyst is composed of the reaction product of (a) one or more carboxylic acids having hydroxy and/or halo functionality; (b) one or more tertiary amine ureas; and, optionally, (c) a reactant selected from the group consisting of specific reactive tertiary amine(s), specific tertiary amine carbamate(s) and mixture thereof.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: November 16, 2004
    Assignee: General Electric Company
    Inventors: Hassan El Ghobary, Louis Muller
  • Patent number: 6788764
    Abstract: A collimator for X-ray apparatus has an aperture defined by the edges of four movable flexible shutters. Each shutter can be moved independently of the other shutters; thus, the position and the size of the aperture can be adjusted at will. The shutters are moved by winding them onto drums; each drum is driven by a stepping motor. Springs bias the shutters towards the closed position of the collimator.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: September 7, 2004
    Assignee: GE Medical Systems Global Technology Company LLC
    Inventors: Jean-Pierre Saladin, Serge Louis Muller, Luc Gabriel Miotti
  • Publication number: 20040152796
    Abstract: A process for preparing a polyurethane foam is provided which comprises reacting a polyisocyanate and an active hydrogen-containing component, e.g.
    Type: Application
    Filed: January 31, 2003
    Publication date: August 5, 2004
    Applicant: CROMPTON CORPORATION
    Inventors: Louis Muller, Hassan El Ghobary, Fabrice Ponthet
  • Patent number: 6748047
    Abstract: A method of estimating an asymmetrical scatter signal distribution wherein asymmetry is introduced by angular incidence of radiation, which has been emitted from a source and transmitted through an object to be imaged, on a detector, is disclosed. This method includes, in an embodiment, modifying scatter that would be derived wherein the radiation is directly incident on the detector with zero degrees of inclination, using an asymmetry factor which indicates the shape and magnitude of the scatter signal distribution and which varies with an angle at which the radiation is incident on the detector, a mean attenuation coefficient of the object, and a distance the radiation has traveled through the object. The estimated scatter provides for correction of scatter in a image.
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: June 8, 2004
    Assignee: General Electric Company
    Inventors: Dinko Eduardo Gonzalez Trotter, Serge Louis Muller