Patents by Inventor Frédéric Brettes
Frédéric Brettes 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).
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Patent number: 11905885Abstract: A fuel supply circuit including a supply duct in which a first flow (Fl) is able to circulate, at least one supply pump for circulating the fuel from a tank to a metering unit, and a recirculation duct for a second flow upstream of the pump, wherein the ducts (20, 60) discharge in different directions upstream of the pump; the circuit includes a dispensing device including an internal flow duct for the first flow (Fl), an external flow channel for the second flow and at least one passage orifice for the second flow, which communicates fluidically with the channel; and the at least one orifice (810) and the duct are coaxial and respectively discharge upstream of the pump.Type: GrantFiled: October 5, 2021Date of Patent: February 20, 2024Assignee: SAFRAN AIRCRAFT ENGINESInventors: Kevin Didier Pierre Le Normand, Frederic Brettes, Loic Pora
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Publication number: 20230407792Abstract: A fuel supply circuit including a supply duct in which a first flow (F1) is able to circulate, at least one supply pump for circulating the fuel from a tank to a metering unit, and a recirculation duct for a second flow upstream of the pump, wherein the ducts (20, 60) discharge in different directions upstream of the pump; the circuit includes a dispensing device including an internal flow duct for the first flow (F1), an external flow channel for the second flow and at least one passage orifice for the second flow, which communicates fluidically with the channel; and the at least one orifice (810) and the duct are coaxial and respectively discharge upstream of the pump.Type: ApplicationFiled: October 5, 2021Publication date: December 21, 2023Inventors: Kevin Didier Pierre LE NORMAND, Frederic BRETTES, Loic PORA
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Publication number: 20230392550Abstract: A device for distributing at least one fuel flow for a circuit for supplying fuel to a combustion chamber of a turbo machine, in particular of an aircraft, the device including a rotating main body extending about a longitudinal axis, the main body including an internal flow duct for a first flow of fuel, extending through the main body along the axis, a first annular portion configured to form an outlet passage for a second flow of fuel, and including at least one orifice for the second flow of fuel to pass through, and an external annular groove in fluidic communication with the at least one orifice in the first portion.Type: ApplicationFiled: October 5, 2021Publication date: December 7, 2023Inventors: Kevin Didier Pierre LE NORMAND, Frederic BRETTES, Loic PORA
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Patent number: 10780976Abstract: A pitch actuating system for a turbomachine propeller including an actuator having a movable portion configured to be connected to propeller blades for displacement thereof in rotation with respect to the pitch axes of the blades. A first pitch control system for the blades, includes a first transmission screw movable in rotation, a first nut traversed by the first transmission screw and configured to cooperate with the blades for their displacement, an auxiliary system for feathering the blades, which comprise a second fixed transmission screw, a second nut traversed by the second transmission screw and movable in translation on the second nut, and wherein the pitch actuation system is configured so that a translational movement of the second nut causes a translational movement of the first transmission screw.Type: GrantFiled: April 18, 2017Date of Patent: September 22, 2020Assignee: SAFRAN AIRCRAFT ENGINESInventors: Huguette De Wergifosse, Frédéric Brettes
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Publication number: 20190106198Abstract: A pitch actuating system for a turbomachine propeller including an actuator having a movable portion configured to be connected to propeller blades for displacement thereof in rotation with respect to the pitch axes of the blades. A first pitch control means for the blades includes a first transmission screw movable in rotation, a first nut traversed by said first transmission screw and configured to cooperate with the blades for their displacement, second means for feathering the blades, which comprise a second fixed transmission screw, a second nut traversed by said second transmission screw and movable in translation on said second nut, and wherein the system is configured so that a translational movement of the second nut causes a translational movement of the first transmission screw.Type: ApplicationFiled: April 18, 2017Publication date: April 11, 2019Applicant: SAFRAN AIRCRAFT ENGINESInventors: Huguette De Wergifosse, Frédéric Brettes
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Patent number: 9879552Abstract: A hydraulic device for changing the pitch of a propeller including a piston rod actuated by a hydraulic fluid, the piston rod including at its end a clevis mount able to provide a connection for transmitting the movements of the piston rod so as to change the pitch of at least one propeller, a thread nut held in position on the clevis of the piston rod by a fastener, the nut being able to collaborate with a threaded rod in order to provide a connection.Type: GrantFiled: September 30, 2011Date of Patent: January 30, 2018Assignee: SNECMAInventors: Frédéric Brettes, Alain François Jean Lavie, Dominique Raulin
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Patent number: 9551365Abstract: A hydraulic device includes a body, a piston rod configured to be actuated by a pressurized hydraulic fluid, and a first drainage channel for externally draining an internal leakage of hydraulic fluid in the device. The device includes a second drainage channel for externally draining the internal leakage of hydraulic fluid in the device, the first and second channels being oriented in two different directions and each of the channels communicating at one of the ends thereof inside the body of the device.Type: GrantFiled: September 22, 2011Date of Patent: January 24, 2017Assignee: SNECMAInventors: Frédéric Brettes, Alain François Jean Lavie
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Patent number: 9222418Abstract: A fuel feed circuit for an aeroengine, the circuit including a high-pressure pumping system including first and second positive displacement pumps, a hydraulic actuator, and a fuel metering unit. As a function of a position of a slide of the actuator, a feed orifice of the actuator may be connected to a high-pressure delivery orifice connected to an outlet of the second pump, or to a low-pressure delivery orifice connected to a low-pressure feed line. The fuel metering unit includes through sections, one of these through sections being connected to an outlet of the high-pressure pumping system and the other through section being connected to an outlet of the high-pressure pumping system and leading to a high-pressure pilot chamber of the hydraulic actuator.Type: GrantFiled: September 30, 2010Date of Patent: December 29, 2015Assignee: SNECMAInventors: Nicolas Alain Bader, Frederic Brettes, Bastien Dore, Laurent Gilbert Yves Hodinot
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Patent number: 8757046Abstract: The invention relates to a piston having a first face, a second face opposite to the first face, a third face connecting said first and second faces together and presenting a groove, and a sealing gasket housed in said groove. The piston includes a duct constituted by a first segment situated inside the piston and connecting said first face to said groove, by a second segment situated inside the piston and connecting said second face to said groove, and by an intermediate segment connecting together said first and second segments and crossing said groove, the walls of said intermediate segment being formed by the walls of said groove and by said sealing gasket in such a manner that said intermediate segment forms a leaktight tube that opens out solely via the first segment and via the second segment, said intermediate segment presenting at least one obstacle suitable for impeding the flow of fluid that flows along said intermediate segment.Type: GrantFiled: March 25, 2011Date of Patent: June 24, 2014Assignee: SNECMAInventors: Frédéric Brettes, Alain François Jean Lavie
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Publication number: 20130199167Abstract: A hydraulic device for changing the pitch of a propeller including a piston rod actuated by a hydraulic fluid, the piston rod including at its end a clevis mount able to provide a connection for transmitting the movements of the piston rod so as to change the pitch of at least one propeller, a thread nut held in position on the clevis of the piston rod by a fastener, the nut being able to collaborate with a threaded rod in order to provide a connection.Type: ApplicationFiled: September 30, 2011Publication date: August 8, 2013Applicant: SNECMAInventors: Frédéric Brettes, Alain François Jean Lavie, Dominique Raulin
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Publication number: 20130180397Abstract: A hydraulic device includes a body, a piston rod configured to be actuated by a pressurised hydraulic fluid, and a first drainage channel for externally draining an internal leakage of hydraulic fluid in the device. The device includes a second drainage channel for externally draining the internal leakage of hydraulic fluid in the device, the first and second channels being oriented in two different directions and each of the channels communicating at one of the ends thereof inside the body of the device.Type: ApplicationFiled: September 22, 2011Publication date: July 18, 2013Applicant: SNECMAInventors: Frédéric Brettes, Alain François Jean Lavie
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Publication number: 20120266600Abstract: A fuel feed circuit for an aeroengine, the circuit including a high-pressure pumping system including first and second positive displacement pumps, a hydraulic actuator, and a fuel metering unit. As a function of a position of a slide of the actuator, a feed orifice of the actuator may be connected to a high-pressure delivery orifice connected to an outlet of the second pump, or to a low-pressure delivery orifice connected to a low-pressure feed line. The fuel metering unit includes through sections, one of these through sections being connected to an outlet of the high-pressure pumping system and the other through section being connected to an outlet of the high-pressure pumping system and leading to a high-pressure pilot chamber of the hydraulic actuator.Type: ApplicationFiled: September 30, 2010Publication date: October 25, 2012Applicant: SNECMAInventors: Nicolas Alain Bader, Frederic Brettes, Bastien Dore, Laurent Gilbert, Yves Hodinot
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Patent number: 8156742Abstract: A fuel-injection device in a turbomachine is disclosed. The device includes a high-pressure pump supplying a flow control valve, whose outlet is connected via a pressurization and cut-off valve to a fuel-injector feed pipe. The valve is connected to the inlet and to the outlet of the pump in order to define two fuel pressurization thresholds, one of which is used to start-up and restart the turbomachine and the other is used for operating the turbomachine from an idle speed and for commanding an equipment with variable geometry.Type: GrantFiled: January 18, 2008Date of Patent: April 17, 2012Assignee: SNECMAInventors: Frédéric Brettes, Jean Charles Cappellari, Laurent Gilbert Yves Hodinot, Sandrine Huet
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Publication number: 20110232479Abstract: The invention relates to a piston having a first face, a second face opposite to the first face, a third face connecting said first and second faces together and presenting a groove, and a sealing gasket housed in said groove. The piston includes a duct constituted by a first segment situated inside the piston and connecting said first face to said groove, by a second segment situated inside the piston and connecting said second face to said groove, and by an intermediate segment connecting together said first and second segments and crossing said groove, the walls of said intermediate segment being formed by the walls of said groove and by said sealing gasket in such a manner that said intermediate segment forms a leaktight tube that opens out solely via the first segment and via the second segment, said intermediate segment presenting at least one obstacle suitable for impeding the flow of fluid that flows along said intermediate segment.Type: ApplicationFiled: March 25, 2011Publication date: September 29, 2011Applicant: SNECMAInventors: Frederic BRETTES, Alain Francois Jean Lavie
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Publication number: 20080178596Abstract: A fuel-injection device in a turbomachine, comprising a high-pressure pump (10) supplying a flow control valve (16), whose outlet is connected via a pressurization and cut-off valve (20) to a fuel-injector (18) feed pipe (22), the valve (20) being connected to the inlet and to the outlet of the pump (10) in order to define two fuel pressurization thresholds, one being used to start-up and restart the turbomachine, and the other being used for operating the turbomachine as from an idle speed and for commanding an equipment with variable geometry (24).Type: ApplicationFiled: January 18, 2008Publication date: July 31, 2008Applicant: HISPANO-SUIZAInventors: Frederic BRETTES, Jean Charles Cappellari, Laurent Gilbert Yves Hodinot, Sandrine Huet