Patents by Inventor Gerard Derrien
Gerard Derrien 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: 10006305Abstract: Tooling for removing sand from a turbine engine, such as an airplane turbojet, the tooling including at least one endoscopic display device including a display and a duct having light guide and image transmission device mounted therein, a suction device having a suction device connected to a suction duct fastened to the duct of a display device, and a plasma jet generator device including a plasma torch connected to gas supply and electricity power supply suitable for operating the plasma torch, the plasma torch being fastened to the duct of an above-mentioned display device.Type: GrantFiled: August 5, 2013Date of Patent: June 26, 2018Assignee: SNECMAInventors: Gerard Derrien, Sebastien Wilk
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Patent number: 9517537Abstract: A method of reshaping a turbine engine blade including at least one deformed zone, the method including peening the deformed zone to be able to restore a shape of the at least one deformed zone.Type: GrantFiled: December 5, 2012Date of Patent: December 13, 2016Assignee: SNECMAInventor: Gerard Derrien
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Publication number: 20150198060Abstract: Tooling for removing sand from a turbine engine, such as an airplane turbojet, the tooling including at least one endoscopic display device including a display and a duct having light guide and image transmission device mounted therein, a suction device having a suction device connected to a suction duct fastened to the duct of a display device, and a plasma jet generator device including a plasma torch connected to gas supply and electricity power suitable for operating the plasma torch, the plasma torch being fastened to the duct of an above-mentioned display device.Type: ApplicationFiled: August 5, 2013Publication date: July 16, 2015Applicant: SNECMAInventors: Gerard Derrien, Sebastien Wilk
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Patent number: 8917090Abstract: A device for inspecting an annular sealing wiper extending at the surface of a bladed-wheel drum of a rotor. The device includes a carriage including at least two guide wheels and carrying a probe situated in a location such that, when the carriage is in position, the probe is positioned facing an edge of the wiper for inspection and at a determined distance therefrom.Type: GrantFiled: June 2, 2010Date of Patent: December 23, 2014Assignee: SNECMAInventors: Sadia Bousquet, Gerard Derrien, Carolina Garcia-Lopez, Jean-Jacques Nedelec
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Patent number: 8881392Abstract: A method of using machining to repair a component workpiece, such as a turbomachine blade, from a known profile of the component, is disclosed. The method includes deforming the profile using a morphing method so that the deformed profile interpolates a cluster of points measured on the component. Deforming the profile involves comparing each zone of the component workpiece that has excess or insufficient thickness with elementary deformation configurations (EDCs) each in the form of a mesh portion and of points, the elementary deformation configurations (EDCs) being filed in a database, the database associating the parameters of the morphing function with each elementary deformation configuration (EDC).Type: GrantFiled: March 19, 2008Date of Patent: November 11, 2014Assignee: SnecmaInventors: Gérard Derrien, Stéphane Kerneis, Ludovic Gasne, Claude Leonetti
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Publication number: 20140325841Abstract: A method of reshaping a turbine engine blade including at least one deformed zone, the method including peening the deformed zone to be able to restore a shape of the at least one deformed zone.Type: ApplicationFiled: December 5, 2012Publication date: November 6, 2014Applicant: SNECMAInventor: Gerard Derrien
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Patent number: 8866891Abstract: An automatic method of non-destructive inspection of a mechanical part by comparing images of the surface of the part with reference images recorded in a database, by a digital image acquisition device including an image sensor, a lighting source, and a mechanism for moving the image sensor and the lighting source relative to the mechanical part.Type: GrantFiled: December 21, 2009Date of Patent: October 21, 2014Assignee: SNECMAInventors: Gerard Derrien, Claude Leonetti
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Patent number: 8597073Abstract: A method and a device for machining the leading edge of a turbine engine blade by a machining center for which parameters are set is disclosed. The method includes: acquiring a 3D profile of the leading edge of the blade; calculating at least one characteristic of the leading edge from the 3D profile; comparing the value of the calculated characteristic with a known theoretical value of the characteristic to obtain an elementary difference for the characteristic; calculating at least one undulation of the leading edge between at least two consecutive elementary sections from the 3D profile; optimizing the elementary differences obtained as a function of the undulation; setting the parameters of the machining center as a function of the optimized elementary differences for the elementary sections to define machining passes over the leading edge; and machining the leading edge of the blade with the machining center with parameters set.Type: GrantFiled: September 23, 2011Date of Patent: December 3, 2013Assignee: SNECMAInventors: Gerard Derrien, Claude Leonetti
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Patent number: 8383979Abstract: A part-holding device in a method for repairing a blade of a monobloc bladed disc of a turbo-machine, through electron-beam welding of a patch onto the blade along a junction plane is disclosed. The device includes a disc supporting device which supports the disc and an adjustable holding device which holds the blade and the patch. The adjustable holding device includes a platen which supports the adjustable holding device, arranged such that the space located above the junction plane allows for an electron beam to pass. The relative positions of the blade and the patch are set using the adjustable holding device that is supported by the platen, while leaving some space allowing for an electron beam to pass. Such a device is simple and reliable.Type: GrantFiled: June 18, 2007Date of Patent: February 26, 2013Assignees: SNECMA, SNECMA ServicesInventors: Gérard Derrien, Stéphane Kerneis, Jacques François Le Saint, Claude André Charles Pagnon
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Publication number: 20120276304Abstract: A method for repairing a metal part by recharging damaged parts by spraying a powder of metal onto the metal part, wherein the process includes laser recharging the damaged parts using the powder, followed by hot isostatic compression, the maximum temperature applied during the isostatic compression not exceeding the recrystallization temperature of the metal.Type: ApplicationFiled: December 8, 2010Publication date: November 1, 2012Applicant: SNECMAInventor: Gérard Derrien
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Publication number: 20120153941Abstract: A device for inspecting an annular sealing wiper extending at the surface of a bladed-wheel drum of a rotor. The device includes a carriage including at least two guide wheels and carrying a probe situated in a location such that, when the carriage is in position, the probe is positioned facing an edge of the wiper for inspection and at a determined distance therefrom.Type: ApplicationFiled: June 2, 2010Publication date: June 21, 2012Applicant: SNECMAInventors: Sadia Bousquet, Gerard Derrien, Carolina Garcia-Lopez, Jean-Jacques Nedelec
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Publication number: 20120077417Abstract: A method and a device for machining the leading edge of a turbine engine blade by a machining center for which parameters are set is disclosed. The method includes: acquiring a 3D profile of the leading edge of the blade; calculating at least one characteristic of the leading edge from the 3D profile; comparing the value of the calculated characteristic with a known theoretical value of the characteristic to obtain an elementary difference for the characteristic; calculating at least one undulation of the leading edge between at least two consecutive elementary sections from the 3D profile; optimizing the elementary differences obtained as a function of the undulation; setting the parameters of the machining center as a function of the optimized elementary differences for the elementary sections to define machining passes over the leading edge; and machining the leading edge of the blade with the machining center with parameters set.Type: ApplicationFiled: September 23, 2011Publication date: March 29, 2012Applicant: SNECMAInventors: Gérard Derrien, Claude Leonetti
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Publication number: 20110298901Abstract: An automatic method of non-destructive inspection of a mechanical part by comparing images of the surface of the part with reference images recorded in a database, by a digital image acquisition device including an image sensor, a lighting source, and a mechanism for moving the image sensor and the lighting source relative to the mechanical part.Type: ApplicationFiled: December 21, 2009Publication date: December 8, 2011Applicant: SNECMAInventors: Gerard Derrien, Claude Leonetti
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Patent number: 8049132Abstract: A method of repairing a turbomachine blisk having at least one damaged zone by build-up of metal in the damaged zone using a laser build-up welding machine is disclosed. The method includes preparing the damaged zone by machining the damaged zone to obtain a zone of defined profile to be repaired, build-up welding of a start-of-run test piece that includes the defined profile using the laser build-up welding machine, checking geometric and metallurgical quality of the test piece, and build-up welding the zone to be repaired of the blisk using the laser build-up welding machine.Type: GrantFiled: February 24, 2006Date of Patent: November 1, 2011Assignee: SNECMA et SNECMA ServicesInventors: Bernard Bouet, Gerard Derrien, Stephane Michel Kerneis, Claude Andre Charles Pagnon, Eric Christian Jean Pinto
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Publication number: 20100095526Abstract: The invention relates to a method of using machining to repair a component workpiece (1), such as a turbomachine blade, from a known profile of the component (B), the method comprising a step of deforming (32) the profile (B) using a morphing method so that the deformed profile interpolates a cluster of points (A) measured on the component. Deforming the profile (B) involves comparing each zone of the component workpiece (1) that has excess or insufficient thickness (20) with elementary deformation configurations (EDCs) (5) each in the form of a mesh portion and of points, the elementary deformation configurations (EDCs) (5) being filed in a database (100), the database (100) associating the parameters of the morphing function (101) with each elementary deformation configuration (EDC) (102).Type: ApplicationFiled: March 19, 2008Publication date: April 22, 2010Applicant: SNECMAInventors: Gerard Derrien, Stephane Kerneis, Ludovic Gasne, Claude Leonetti
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Publication number: 20080000947Abstract: This invention relates to a part-holding device in a method for repairing a blade of a monobloc bladed disc of a turbo-machine, through electron-beam welding of a patch onto the blade along a junction plane. The device comprises means for supporting the disc and adjustable means for holding the blade and the patch, the latter comprising a platen supporting means for holding the blade and means for holding the patch, arranged such that the space located above the junction plane allows for an electron beam to pass. Implementing the present invention, the relative positions of the blade and the patch are set using holding means that are all supported by a same platen, while leaving some space allowing for an electron beam to pass. Such a device is simple and reliable.Type: ApplicationFiled: June 18, 2007Publication date: January 3, 2008Applicants: SNECMA, SNECMA SERVICESInventors: Gerard Derrien, Stephane Kerneis, Jacques Le Saint, Claude Pagnon
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Publication number: 20060193612Abstract: The present invention relates to a method of repairing a one-piece bladed disc or blisk of turbomachine having at least one damaged zone, by build-up of metal in said damaged zone by means of a build-up welding machine, which comprises the steps of preparing the damaged zone, of building up the zone with metal and of re-work of the repaired zone. The method is characterized in that: the preparation step comprises the machining of the zone so as to obtain a defined profile; the build-up welding operation is carried out on a test piece, called start-of-run test piece, having said defined profile, using a build-up welding machine, which is a laser-type machine and the operating parameters of which are preset; the quality of the test piece after build-up welding is checked; and, if the quality of the test piece corresponds to the acceptance criteria, the zone to be repaired is built up using the same machine without changing the operating parameters thereof.Type: ApplicationFiled: February 24, 2006Publication date: August 31, 2006Applicants: SNECMA, SNECMA SERVICESInventors: Bernard Bouet, Gerard Derrien, Stephane Kerneis, Claude Pagnon, Eric Pinto