Patents Assigned to NTN-SNR ROULEMENTS
  • Patent number: 10859402
    Abstract: The invention relates to an assembly comprising an encoder (1) secured in rotation to the member, said encoder comprising a primary magnetic track (2) and a secondary magnetic track (3) and a sensor (4) having two patterns (5) of sensitive elements which are suitable for detecting the signals supplied by the tracks (2, 3) of the encoder (1), each pattern (5) being arranged at reading distance from a track (2, 3) to form a representative signal of the position of said track, the sensitive elements of a first pattern (5) are based on a magnetoresistive material wherein the resistance varies according to the magnetic signal of the track (2, 3) to be detected, said first pattern being arranged at reading distance from a second track (3) having 2N?1 magnetic pole pairs, the sensitive elements of the second pattern (5) being based on an anisotropic magnetoresistive material, said second pattern being arranged at reading distance from a primary track (2) having N magnetic pole pairs.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: December 8, 2020
    Assignee: NTN-SNR Roulements
    Inventor: Christophe Duret
  • Patent number: 10775196
    Abstract: The invention relates to a system comprising: an encoder the magnetic track of which has an alternation of North and South magnetic poles separated by transitions in Archimedean spiral, a rotation sensor able to detect the periodic magnetic field emitted by the encoder using a plurality of magnetic sensitive elements, distributed angularly along the magnetic track. Each magnetic sensitive element delivers a signal representative to the rotation of the encoder. The sensor further comprises a device for subtracting the signals (V1, V2) delivered by two sensitive elements forming therebetween an angle ? that is such that: 0.55?<?·Npp, <0.83?, modulo 2? or 1.17?<?·Npp<1.45?, modulo 2?.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: September 15, 2020
    Assignee: NTN-SNR Roulements
    Inventor: Christophe Duret
  • Patent number: 10393131
    Abstract: The rolling bearing for a blade root includes an outer ring (13) and an inner ring (12). An inner space (43) is defined between the inner surface (33) of the outer ring (13) and the outer surface (25) of the inner ring (12). At a distal end (46), the inner space (43) is closed off by a distal sealing system (47) between the outer ring and the inner ring. A system (57) for retaining the distal sealing system (47) includes a retaining body (58), and a thread/tapping system provided on a peripheral assembly surface of the retaining body and on a peripheral surface of the facing inner or outer ring. The retaining body (58) is screwable into a retention position in which an axial abutment surface (61) of the retaining body forms an axial stop for the distal sealing system longitudinally (B), in the proximal->distal direction.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: August 27, 2019
    Assignee: NTN-SNR ROULEMENTS
    Inventors: Guy Azam, Guillaume Lefort
  • Patent number: 10168186
    Abstract: A sensor including a measuring assembly integrating at least one magnetoresistive element having a stack of two conductive magnetic layers, respectively reference and sensitive, the reference layer having magnetic anisotropy in the direction X and the sensitive layer having a direction Y, a polarization permanent magnet having a surface extending in a plane of directions X and Y and having a symmetry plane of directions X and Z, the measuring assembly being disposed with respect to the symmetry plane of the polarization magnet so that the layers of the magnetoresistive element are disposed in a plane parallel to the surface while being offset from said plane in the direction Y by a distance (?y) that is arranged so that the magnetic field of the polarization magnet orients the magnetisation of the sensitive layer in the direction Y.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: January 1, 2019
    Assignee: NTN-SNR ROULEMENTS
    Inventors: Christophe Duret, Cyril Peterschmitt
  • Patent number: 10156281
    Abstract: To assemble an end portion (12) of a crankshaft (10) defining an axis (100) of revolution, forming at least one first bearing surface (30), turned radially outward, and a shoulder (32), on which threaded holes (34) lead outward, with a flywheel (24) comprising axial bores (36) and a bearing (28) for guiding the crankshaft relative to an engine housing (26) in rotation about the axis of revolution, attachment screws (16) passing through the axial bores of the flywheel and screwed into the threaded holes in the crankshaft end portion are provided, thus rigidly connecting the flywheel to the crankshaft end portion. The guide bearing comprises at least one unitary guide ring (42) positioned on the first bearing surface (30) and having a first transverse surface (44) axially bearing on the shoulder (32). The unitary guide ring comprises axial bores (48) which are aligned with the threaded holes (34) in the crankshaft and the axial bores of the flywheel (36) and have the screws (16) passing therethrough.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: December 18, 2018
    Assignee: NTN-SNR Roulements
    Inventor: Marc Paquien
  • Patent number: 10125821
    Abstract: The invention relates to a lubricated rolling bearing for blade roots including a coating made of a chemical compound of lamellar structure.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: November 13, 2018
    Assignee: NTN-SNR ROULEMENTS
    Inventors: Houcine Ben Abdelounis, Eric Gard
  • Patent number: 8821027
    Abstract: A suspension stop device for a suspension arm of a vehicle, having a coil spring, having a stop bearing defining a rotation axis of the device and a bottom metal washer turning with respect to a top metal washer; a support piece for transmitting to the bottom washer forces exerted by the spring, the support piece comprising a support zone for the bottom washer; a cover covering the top washer and delimiting with the support piece a housing for the bearing, the cover being provided with a skirt covering a peripheral zone of the support piece and delimiting with the peripheral zone of the support piece an annular labyrinth, disposed radially outside the housing and connecting the housing to the outside; and an annular deflector delimiting with the skirt of the cover at least one top opening and with the support piece at least one bottom opening.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: September 2, 2014
    Assignee: NTN-SNR Roulements
    Inventor: Anthony Chamousset
  • Patent number: 8803510
    Abstract: Provided are a rotation detecting device that highly precisely detects absolute angle with low noise, as well as a bearing assembly with such a rotation detecting device. Such a rotation detecting device includes magnetic encoders arranged coaxially with different number of magnetic poles as well as magnetic sensors that detect magnetic fields of those encoders. Each of the magnetic sensors can detect the encoders within each magnetic pole, and includes sensor elements as well as a phase detector that determines the phase of the sensor element in reference to a detected magnetic field signal and then outputs an ABZ phase signal. Such a rotation detecting device further includes a phase difference detector that determines a phase difference of the magnetic field signals in reference to an output from the phase detectors and an angle calculator that calculates the absolute angle of the encoders based on the detected phase difference.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: August 12, 2014
    Assignees: NTN Corporation, NTN-SNR Roulements
    Inventors: Toru Takahashi, Pascal Desbiolles
  • Publication number: 20120308167
    Abstract: A suspension stop device for a suspension arm of a vehicle, having a coil spring, having a stop bearing defining a rotation axis of the device and a bottom metal washer turning with respect to a top metal washer; a support piece for transmitting to the bottom washer forces exerted by the spring, the support piece comprising a support zone for the bottom washer; a cover covering the top washer and delimiting with the support piece a housing for the bearing, the cover being provided with a skirt covering a peripheral zone of the support piece and delimiting with the peripheral zone of the support piece an annular labyrinth, disposed radially outside the housing and connecting the housing to the outside; and an annular deflector delimiting with the skirt of the cover at least one top opening and with the support piece at least one bottom opening.
    Type: Application
    Filed: March 29, 2012
    Publication date: December 6, 2012
    Applicant: NTN-SNR ROULEMENTS
    Inventor: Anthony Chamousset
  • Publication number: 20120251024
    Abstract: A bearing for an angularly contacting bump stop, the washers of which consist of stamped sheet metal and have a surrounding geometry. The geometry of the bearing is such that, in every cutaway containing the geometrical axis of rotation of the bearing, the lower raceway forms a lower circle arc which defines a lower axial curvature center, the upper raceway forms an upper circle arc which defines an upper axial curvature center, the upper and lower curvature centers being located on an angular geometrical axis that forms with the geometrical axis of rotation an angle of obliquity of a value between 5° and 65°. Specifically, the lower circle arc has two ends defining an opening angle of a value greater than or equal to 80° and a tangent located in a lower plane perpendicular to the axis of rotation at a lower tangent point defining with the end of the nearest lower circle arc a portion of the lower circle arc having an opening angle greater than or equal to 10°.
    Type: Application
    Filed: October 14, 2010
    Publication date: October 4, 2012
    Applicant: NTN-SNR ROULEMENTS
    Inventors: Sebastien Brisson, Antony Chamousset
  • Publication number: 20120132484
    Abstract: A lubricator comprises a container of variable volume holding a lubricant and having an opening for dispensing the lubricant. An electromechanical or electrochemical actuator operated by a control circuit makes it possible to reduce the volume of the container. An electrical circuit for displaying the state of the lubricator comprising a light source can emit at least one alarm light signal. A lid affixed to the container in a removable manner constitutes a housing for the electrical signal display circuit and defines a reference axis of the lubricator. A light diffuser guides the light emitted by the light source towards numerous light outlets distributed along the circumference of the lid in a manner that at least one of the light outlets is visible regardless of the position of an observer facing the lubricator and is located on a circle of observation centered on the reference axis of the lubricator.
    Type: Application
    Filed: October 25, 2011
    Publication date: May 31, 2012
    Applicant: NTN-SNR ROULEMENTS
    Inventors: Sébastien Guillaume, Hervé Lenon, Gérard Mermoud, Christophe Oddoux
  • Publication number: 20120114279
    Abstract: A roller for a rolling bearing has an outer surface revolving about an axis of symmetry and a lateral face arranged on either side of the outer surface. The roller is intended to rotate in the bearing about the axis of symmetry while bearing on the outer surface. The roller has two recesses produced respectively on one lateral face extending along the axis of symmetry. The recesses have an opening formed on the lateral face and are separated axially by a material bridge. The recesses are defined by a lateral revolving surface, the shape whereof is divergent tapered from the opening to the material bridge.
    Type: Application
    Filed: October 5, 2011
    Publication date: May 10, 2012
    Applicant: NTN-SNR ROULEMENTS
    Inventor: Olivier Blanchin
  • Publication number: 20110317954
    Abstract: A motor vehicle bump stop has an upper retainer, a lower retainer and rolling bodies arranged between the retainers to enable the relative rotation thereof, the retainers are arranged to form together at least one annular space defined laterally by two respectively inner and outer axial walls. The stop has a set of at least two mounted seal rings stacked axially in the space with an axial clearance. The rings are mounted on the inner or outer wall and form a radial clearance with the outer or inner wall, so as to form a sealing baffle in the space.
    Type: Application
    Filed: June 28, 2011
    Publication date: December 29, 2011
    Applicant: NTN-SNR ROULEMENTS
    Inventor: Ludovic Saunier