Patents by Inventor Stephane Chevalier
Stephane Chevalier 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: 11940008Abstract: Rolling-element bearing for a turbomachine of an aircraft, comprising an inner ring (3) defining a first raceway (112), and an outer ring (4) defining a second raceway (124), characterized in that the bearing has at least one loop circuit (21, 22) for forced recirculation of lubricant, this loop circuit comprising a first recirculation circuit (21) comprising at least one lubricant inlet (1200) located on the second raceway (124), and connected by at least one duct (120, 166) created in the outer ring (4) to at least one lubricant outlet (1661) which discharges into a second recirculation circuit (22) of the loop circuit (21, 22), this second recirculation circuit (22) comprising at least one duct (152, 1134, 1136; 1135, 1136) created in the inner ring (3).Type: GrantFiled: July 9, 2020Date of Patent: March 26, 2024Assignee: SAFRAN POWER UNITSInventors: Serge Marie Gabriel Cot, Jean-Paul Salvador Lopez, Stephane Chevalier
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Publication number: 20220316527Abstract: Rolling-element bearing for a turbomachine of an aircraft, comprising an inner ring (3) defining a first raceway (112), and an outer ring (4) defining a second raceway (124), characterized in that the bearing has at least one loop circuit (21, 22) for forced recirculation of lubricant, this loop circuit comprising a first recirculation circuit (21) comprising at least one lubricant inlet (1200) located on the second raceway (124), and connected by at least one duct (120, 166) created in the outer ring (4) to at least one lubricant outlet (1661) which discharges into a second recirculation circuit (22) of the loop circuit (21, 22), this second recirculation circuit (22) comprising at least one duct (152, 1134, 1136; 1135, 1136) created in the inner ring (3).Type: ApplicationFiled: July 9, 2020Publication date: October 6, 2022Inventors: Serge Marie Gabriel COT, Jean-Paul Salvador LOPEZ, Stephane CHEVALIER
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Patent number: 10766629Abstract: An architecture of a propulsion system of a multi-engine helicopter is disclosed, comprising turboshaft engines that are connected to a power transmission gearbox. It comprises: a hybrid turboshaft engine that is capable of operating in at least one standby mode during a stable flight of the helicopter; a pack for quickly restarting said hybrid turboshaft engine in order to bring said engine out of said standby mode and to reach a nominal operating mode; an auxiliary power unit that is connected to said electrotechnical restart pack by means of a first AC/DC converter and is capable of providing said restart pack, on demand, with power required for bringing said hybrid turboshaft engine out of said standby mode.Type: GrantFiled: March 20, 2015Date of Patent: September 8, 2020Assignees: SAFRAN HELICOPTER ENGINES, SAFRAN POWER UNITSInventors: Fabien Mercier-Calvairac, Stéphane Beddok, Stéphane Chevalier, Sophie Humbert
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Patent number: 10189446Abstract: An end piece (100) for a wiper (102) provided with a rigidifying element (110) comprises a channel (120) for receipt of the rigidifying element, as well as first positioning stops (130), and a first means (150) for locking this element. The end piece comprises at least one second positioning stop (140) in order to cooperate equally well with a first or second type of rigidifying element with different dimensions. The first positioning stops (130) are operational when the first type of rigidifying element (110) is inserted in the channel, and at least one second positioning stop (140) is operational when the second type of rigidifying element is inserted in the receipt channel (120).Type: GrantFiled: May 30, 2017Date of Patent: January 29, 2019Assignee: Valeo Systémes d'EssuyageInventors: Romain Laurens, Stéphane Chevalier
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Patent number: 9841038Abstract: A system for supplying compressed air to a pneumatic network includes a load compressor, an air supply and a power shaft driving the load compressor. The system also includes in an air outlet of such load compressor, a connecting channel connected, on the one side, with a channel connected with the pneumatic network and, on the other side, with an air discharge conduct towards an exhaust nozzle. Air flow rate bleed valves are controlled by a processing unit via servo-loops as a function of the pressure sensors and the speed sensor.Type: GrantFiled: June 6, 2013Date of Patent: December 12, 2017Assignee: MICROTURBO SAInventors: Fabien Silet, Stephane Chevalier, Jean-Francois Rideau
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Publication number: 20170341627Abstract: An end piece (100) for a wiper (102) provided with a rigidifying element (110) comprises a channel (120) for receipt of the rigidifying element, as well as first positioning stops (130), and a first means (150) for locking this element. The end piece comprises at least one second positioning stop (140) in order to cooperate equally well with a first or second type of rigidifying element with different dimensions. The first positioning stops (130) are operational when the first type of rigidifying element (110) is inserted in the channel, and at least one second positioning stop (140) is operational when the second type of rigidifying element is inserted in the receipt channel (120).Type: ApplicationFiled: May 30, 2017Publication date: November 30, 2017Applicant: Valeo Systèmes d'EssuyageInventors: Romain Laurens, Stéphane Chevalier
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Publication number: 20170248080Abstract: The invention relates to a device for starting a gas turbine, comprising an initiation system able, on command, to rotate said gas turbine. The starting device comprises means for receiving information representing the rotation speed of the gas turbine, means for calculating a set torque value according to said information representing the rotation speed of the gas turbine, and means for transmitting said set torque value to the initiation system, and the means for calculating the set torque value are suitable for making a comparison of the information representing the rotation speed of the gas turbine with a predetermined speed profile and calculating the set torque value from said comparison.Type: ApplicationFiled: August 21, 2015Publication date: August 31, 2017Applicants: SAFRAN POWER UNITS, SAFRAN ELECTRICAL & POWERInventors: Stephane CHEVALIER, Fabien SILET, Alexis RENOTTE
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Publication number: 20170203048Abstract: The invention relates to a safe support device for a syringe, said support comprising a support sheath for the body of a syringe, and safety means which comprise an inner sheath suitable for sliding relative to said support sheath between a waiting retracted position, in which said inner sheath is substantially retracted inside said support sheath, and an active protection position, in which said inner sheath projects from said support sheath. The inner sheath has a free end portion formed by a flexible end-piece. The invention also relates to an assembly comprising such a safe support device and a syringe having a body, a piston and a needle disposed at one end of said body.Type: ApplicationFiled: January 30, 2017Publication date: July 20, 2017Inventor: Stephane Chevalier
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Publication number: 20170152055Abstract: An architecture of a propulsion system of a multi-engine helicopter is disclosed, comprising turboshaft engines that are connected to a power transmission gearbox. It comprises: a hybrid turboshaft engine that is capable of operating in at least one standby mode during a stable flight of the helicopter; a pack for quickly restarting said hybrid turboshaft engine in order to bring said engine out of said standby mode and to reach a nominal operating mode; an auxiliary power unit that is connected to said electrotechnical restart pack by means of a first AC/DC converter and is capable of providing said restart pack, on demand, with power required for bringing said hybrid turboshaft engine out of said standby mode.Type: ApplicationFiled: March 20, 2015Publication date: June 1, 2017Applicants: SAFRAN HELICOPTER ENGINES, SAFRAN POWER UNITSInventors: Fabien Mercier-Calvairac, Stéphane Beddok, Stéphane Chevalier, Sophie Humbert
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Publication number: 20170037784Abstract: The invention relates to a starting device for an auxiliary power unit (10), comprising a control unit (32) of the power supply of a starter motor (12), said motor (12) being suitable to be supplied with power by a supply network (16) and configured to drive a revolution of the auxiliary power unit (10), the control unit (32) being suitable to receive an item of information representative of the speed of rotation of the auxiliary power unit (10) and control of the power supply of the starter motor (12) by the control unit (32) being dependent on said item of information representative of the speed of rotation. The device is characterised in that the control unit (32) is suitable to receive an item of information representative of the voltage of the power supply network (16) and in that control of the power supply of the starter motor (12) by the control unit (32) is dependent on said item of information representative of the voltage.Type: ApplicationFiled: April 22, 2015Publication date: February 9, 2017Applicant: SAFRAN POWER UNITSInventors: Stephane CHEVALIER, Remi JOACHIM, Remy PEDOUX
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Patent number: 9555196Abstract: The invention relates to a safe support device for a syringe, said support comprising a support sheath for the body of a syringe, and safety means which comprise an inner sheath suitable for sliding relative to said support sheath between a waiting retracted position, in which said inner sheath is substantially retracted inside said support sheath, and an active protection position, in which said inner sheath projects from said support sheath. The inner sheath has a free end portion formed by a flexible end-piece. The invention also relates to an assembly comprising such a safe support device and a syringe having a body, a piston and a needle disposed at one end of said body.Type: GrantFiled: October 2, 2013Date of Patent: January 31, 2017Assignee: SanofiInventor: Stephane Chevalier
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Publication number: 20140031762Abstract: The invention relates to a safe support device for a syringe, said support comprising a support sheath for the body of a syringe, and safety means which comprise an inner sheath suitable for sliding relative to said support sheath between a waiting retracted position, in which said inner sheath is substantially retracted inside said support sheath, and an active protection position, in which said inner sheath projects from said support sheath. The inner sheath has a free end portion formed by a flexible end-piece. The invention also relates to an assembly comprising such a safe support device and a syringe having a body, a piston and a needle disposed at one end of said body.Type: ApplicationFiled: October 2, 2013Publication date: January 30, 2014Applicant: SANOFIInventor: Stephane Chevalier
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Publication number: 20130333365Abstract: A system for supplying compressed air to a pneumatic network includes a load compressor, an air supply and a power shaft driving the load compressor. The system also includes in an air outlet of such load compressor, a connecting channel connected, on the one side, with a channel connected with the pneumatic network and, on the other side, with an air discharge conduct towards an exhaust nozzle. Air flow rate bleed valves are controlled by a processing unit via servo-loops as a function of the pressure sensors and the speed sensor.Type: ApplicationFiled: June 6, 2013Publication date: December 19, 2013Inventors: Fabien SILET, Stephane CHEVALIER, Jean-Francois RIDEAU
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Patent number: 8603043Abstract: The invention relates to a safe support device for a syringe, said support comprising a support sheath for the body of a syringe, and safety means which comprise an inner sheath suitable for sliding relative to said support sheath between a waiting retracted position, in which said inner sheath is substantially retracted inside said support sheath, and an active protection position, in which said inner sheath projects from said support sheath. The inner sheath has a free end portion formed by a flexible end-piece. The invention also relates to an assembly comprising such a safe support device and a syringe having a body, a piston and a needle disposed at one end of said body.Type: GrantFiled: October 9, 2012Date of Patent: December 10, 2013Assignee: SanofiInventor: Stephane Chevalier
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Patent number: 8308696Abstract: The invention relates to a safe support device for a syringe, said support comprising a support sheath for the body of a syringe, and safety means which comprise an inner sheath suitable for sliding relative to said support sheath between a waiting retracted position, in which said inner sheath is substantially retracted inside said support sheath, and an active protection position, in which said inner sheath projects from said support sheath. The inner sheath has a free end portion formed by a flexible end-piece. The invention also relates to an assembly comprising such a safe support device and a syringe having a body, a piston and a needle disposed at one end of said body.Type: GrantFiled: October 12, 2010Date of Patent: November 13, 2012Assignee: Sanofi-AventisInventor: Stephane Chevalier
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Publication number: 20110046605Abstract: The invention relates to a safe support device for a syringe, said support comprising a support sheath for the body of a syringe, and safety means which comprise an inner sheath suitable for sliding relative to said support sheath between a waiting retracted position, in which said inner sheath is substantially retracted inside said support sheath, and an active protection position, in which said inner sheath projects from said support sheath. The inner sheath has a free end portion formed by a flexible end-piece. The invention also relates to an assembly comprising such a safe support device and a syringe having a body, a piston and a needle disposed at one end of said body.Type: ApplicationFiled: October 12, 2010Publication date: February 24, 2011Applicant: SANOFI-AVENTISInventor: Stéphane Chevalier
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Publication number: 20050148943Abstract: The invention relates to a safe support device for a syringe, said support comprising a support sheath for the body of a syringe, and safety means which comprise an inner sheath suitable for sliding relative to said support sheath between a waiting retracted position, in which said inner sheath is substantially retracted inside said support sheath, and an active protection position, in which said inner sheath projects from said support sheath. The inner sheath has a free end portion formed by a flexible end-piece. The invention also relates to an assembly comprising such a safe support device and a syringe having a body, a piston and a needle disposed at one end of said body.Type: ApplicationFiled: February 11, 2003Publication date: July 7, 2005Inventor: Stephane Chevalier