Patents by Inventor Fabien Tessier
Fabien Tessier 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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Publication number: 20170030372Abstract: A fluid transfer device including a rotor having two centrifugal wheels, and a stator incorporating a set of continuous axi symmetric return channels conveying the fluid from the first wheel to the second wheel. Each of the return channels includes in succession a diffusing portion that guides the fluid in a centrifugal direction, a bend portion that redirects the fluid stream in a centripetal direction, a return portion that guides the fluid along a centripetal path, and then an outlet portion formed in a first non-tubular part that guides the fluid towards the second wheel. In these channels, the diffusing portion and the bend portion are distinct parts, and the diffusing portion is formed in a second non-tubular part secured to the first non-tubular part. A method of fabricating the device.Type: ApplicationFiled: April 8, 2015Publication date: February 2, 2017Applicant: AIRBUS SAFRAN LAUNCHERS SASInventors: Sebastien BOUFFLERT, Philippe BOURDIN, Fabien TESSIER, Vincent LANGLOIS
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Patent number: 9482271Abstract: In a disengageable axial thrust bearing for a rotary machine, an outer ring has first and second outer half-rings (114A, 114B) centered in a casing (116) and clamped in the axial direction between a stationary thrust member (118) and a first pre-loading system (120) exerting a first predetermined axial force such that, so long as the axial load exerted on the axial thrust bearing via a synchronization element (106) is greater than a determined threshold value, rolling elements (110) with oblique contacts present respective single lines (130) having two points of contact (130A, 130B) with an inner ring (102) and with the first outer half-ring (114A), the second outer half-ring (114B) being spaced apart from the first by a second predetermined axial force exerted by a second pre-loading system (126) inserted in the axial direction between the first and second outer half-rings, and such that the inner ring (102) is driven in rotation by the synchronization element, whereas, when the axial load exerted on the axiType: GrantFiled: March 25, 2014Date of Patent: November 1, 2016Assignee: SNECMAInventors: Sébastien Boufflert, Philippe Bourdin, Alban Lemaitre, Fabien Tessier
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Patent number: 9435373Abstract: In a rotary machine bearing including an inner ring, an outer ring, and rolling elements between them, one of the inner and outer rings includes first and second half-rings suitable for being clamped in the axial direction between a thrust member and a first pre-loading system exerting a first predetermined axial force, and a second pre-loading system is provided that is inserted in the axial direction between the first and second half-rings and that exerts a second predetermined axial force less than the first predetermined axial force.Type: GrantFiled: March 18, 2014Date of Patent: September 6, 2016Assignee: SNECMAInventors: Sebastien Boufflert, Philippe Bourdin, Alban Lemaitre, Fabien Tessier
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Publication number: 20160040711Abstract: In a rotary machine bearing including an inner ring, an outer ring, and rolling elements between them, one of the inner and outer rings includes first and second half-rings suitable for being clamped in the axial direction between a thrust member and a first pre-loading system exerting a first predetermined axial force, and a second pre-loading system is provided that is inserted in the axial direction between the first and second half-rings and that exerts a second predetermined axial force less than the first predetermined axial force.Type: ApplicationFiled: March 18, 2014Publication date: February 11, 2016Applicant: SNECMAInventors: Sebastien BOUFFLERT, Philippe BOURDIN, Alban LEMAITRE, Fabien TESSIER
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Publication number: 20160032964Abstract: In a disengageable axial thrust bearing for a rotary machine, an outer ring has first and second outer half-rings (114A, 114B) centered in a casing (116) and clamped in the axial direction between a stationary thrust member (118) and a first pre-loading system (120) exerting a first predetermined axial force such that, so long as the axial load exerted on the axial thrust bearing via a synchronization element (106) is greater than a determined threshold value, rolling elements (110) with oblique contacts present respective single lines (130) having two points of contact (130A, 130B) with an inner ring (102) and with the first outer half-ring (114A), the second outer half-ring (114B) being spaced apart from the first by a second predetermined axial force exerted by a second pre-loading system (126) inserted in the axial direction between the first and second outer half-rings, and such that the inner ring (102) is driven in rotation by the synchronization element, whereas, when the axial load exerted on the axiType: ApplicationFiled: March 25, 2014Publication date: February 4, 2016Applicant: SNECMAInventors: Sébastien BOUFFLERT, Philippe BOURDIN, Alban LEMAITRE, Fabien TESSIER
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Patent number: 9151684Abstract: The invention relates mainly to a test bench (10) for a radial bearing (14) suitable for being interposed between two members (12, 16) that are movable relative to each other in rotation, the test bench being characterized in that it comprises a radial force measurement device (18) for measuring radial forces exerted on said bearing (14), a radial acceleration measurement device (20) for measuring radial accelerations to which said bearing (14) is subjected, and an electronic calculation unit (26) in communication with the radial force measurement device (18) and with the radial acceleration measurement device (20). The invention also relates to a method of establishing a behavior relationship for the radial bearing (14).Type: GrantFiled: April 4, 2014Date of Patent: October 6, 2015Assignees: SNECMA, CENTRE NATIONAL D'ETUDES SPATIALES CNESInventors: Philippe Nivet, Fabien Tessier, Laurent Fabbri, Valerie Begin
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Publication number: 20140298917Abstract: The invention relates mainly to a test bench (10) for a radial bearing (14) suitable for being interposed between two members (12, 16) that are movable relative to each other in rotation, the test bench being characterized in that it comprises a radial force measurement device (18) for measuring radial forces exerted on said bearing (14), a radial acceleration measurement device (20) for measuring radial accelerations to which said bearing (14) is subjected, and an electronic calculation unit (26) in communication with the radial force measurement device (18) and with the radial acceleration measurement device (20). The invention also relates to a method of establishing a behavior relationship for the radial bearing (14).Type: ApplicationFiled: April 4, 2014Publication date: October 9, 2014Applicants: CENTRE NATIONAL D'ETUDES SPATIALES CNES, SNECMAInventors: Philippe NIVET, Fabien Tessier, Laurent Fabbri, Valerie Begin
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Patent number: 7789617Abstract: A suction stage for a pump with a centrifugal wheel, the suction stage including a rotational impeller equipped with a hub and arranged upstream of the centrifugal wheel, the suction stage further including a diffuser arranged between the impeller and the centrifugal wheel, the diffuser including a plurality of blades. The hub has a downstream surface extending axially so as to converge toward the centrifugal wheel, and the blades of the diffuser have free ends, the blades protruding radially toward the downstream surface.Type: GrantFiled: October 13, 2006Date of Patent: September 7, 2010Assignee: SNECMAInventors: Fabien Wahl, Jean-Michel Nguyen Duc, Fabien Tessier, Sebastien Boufflert
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Publication number: 20080080973Abstract: The invention relates to a suction stage (12) for a pump (10) with centrifugal wheel, the suction stage (12) comprising a rotational impeller (18) equipped with a hub (20) and arranged upstream of the centrifugal wheel (14), the suction stage (12) further comprising a diffuser (34) arranged between the impeller (18) and the centrifugal wheel (14), the diffuser (34) comprising a plurality of blades (36). The invention is characterised by the fact that the hub (20) has a downstream surface (20b) extending axially so as to converge toward the centrifugal wheel, and in that the blades (36) of the diffuser (34) have free ends, said blades protruding radially toward said downstream surface in such a way that the free ends of the blades make said downstream surface (20b) flush.Type: ApplicationFiled: October 13, 2006Publication date: April 3, 2008Applicant: SNECMAInventors: Fabien Wahl, Jean-Michel N. Guyen Duc, Fabien Tessier, Sebastien Boufflert