Patents Assigned to Aktiébolaget SKF
  • System and method for forecasting industrial machine failures
    Patent number: 11442444
    Abstract: A system and method for forecasting failures in industrial machines, including: receiving raw sensory inputs collected from at least one machine; generating a plurality of data features based on the raw sensory inputs; selecting from the plurality of data features a plurality of indicative data features, wherein the selection is based on a distribution of the plurality of indicative data features that determines an association between the plurality of indicative data features and a machine failure; selecting, based on the plurality of indicative data features, a machine learning model; applying the selected machine learning model to the plurality of indicative data features; and determining a probability for a forthcoming machine failure.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: September 13, 2022
    Assignee: AKTIEBOLAGET SKF
    Inventors: David Lavid Ben Lulu, Nir Dromi
  • Method for centering the magnetic center of an impulse ring of a bearing unit on the center of rotation of the bearing unit
    Patent number: 11434957
    Abstract: A method for centering an impulse ring of a bearing unit on the center of rotation of the bearing unit including a first ring and a second ring. The impulse ring provided with a target having pairs of magnetic poles, and with a fixing sleeve. The method provides a) inserting the impulse ring between the first ring and the fixing sleeve, the first ring and the fixing sleeve being configured to maintain the impulse ring in an axial direction of the bearing; b) recording an angular signal over one mechanical turn of the impulse ring, the angular signal being generated by detection configured to cooperate with the pairs of magnetic poles; c) determining a total pitch deviation vector of the impulse ring based on the angular signal; d) shifting the impulse ring in a radial direction of the bearing, and e) securing the impulse ring relative to the first ring.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: September 6, 2022
    Assignee: Aktiebolaget SKF
    Inventors: Yves-André Liverato, Olivier Verbe
  • Rotor shaft unit
    Patent number: 11428201
    Abstract: A rotor shaft unit for a tidal system, which tidal system includes a main frame and a rotor and a housing connected to the rotor, includes a rotor shaft configured to be connected to the main frame, at least one bearing unit for rotatably supporting the housing for rotation relative to the rotor shaft, and a sleeve configured to be mounted in the main frame, the sleeve being disposed around a first end portion of the rotor shaft and connected to the rotor shaft by a friction connection. Also a tidal system including the rotor shaft unit.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: August 30, 2022
    Assignee: AKTIEBOLAGET SKF
    Inventors: Michael Baumann, Matthias Hofmann
  • Rolling bearing with wire races and retaining rib
    Patent number: 11428268
    Abstract: The rolling bearing provides a first ring and second ring capable of rotating concentrically relative to one another, at least one first wire race mounted in the first ring, at least one second wire race mounted in the second ring, and at least one row of radial rollers radially interposed between raceways provided on the first and second wire races. The second ring comprises at least two guide flanges to axially retain therebetween the row of radial rollers. The first ring includes at least one retaining rib extending into the radial space that exists between the first and second rings and towards the second ring, the retaining rib protruding radially relative to the raceway of the first wire race.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: August 30, 2022
    Assignee: Aktiebolaget SKF
    Inventors: Herve Dondaine, Arnaud Guerard, Joshua Oliveira
  • Rolling-element bearing assembly
    Patent number: 11428269
    Abstract: A rolling-element bearing assembly includes first and second bearing rings that form a bearing interior between them and a plurality of rolling elements disposed in the bearing interior and a seal assembly for sealing the bearing interior. The seal assembly includes a seal carrier and a seal element having at least one primary seal lip for sealing the bearing interior and a secondary seal lip for sealing against external contamination. The seal element is connected to the seal carrier such that the primary seal lip and the secondary seal lip abut axially against an axial end surface of the second bearing ring.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: August 30, 2022
    Assignee: AKTIEBOLAGET SKF
    Inventors: Jan Kroeger, Peter Lemper, Hans-Juergen Liesegang, Klaus-Dieter Schulz
  • Plain bearing and method for its manufacture
    Patent number: 11428265
    Abstract: A newly built plain bearing has an inner ring and an outer ring each having a sliding surface along which the rings are movable relative to each other. The sliding surfaces are spaced from each other by an intermediate space that holds an initial greasing, and at least one of the sliding surfaces includes an anti-corrosion coating.
    Type: Grant
    Filed: October 6, 2020
    Date of Patent: August 30, 2022
    Assignee: AKTIEBOLAGET SKF
    Inventors: Frank Henninger, Stefan Keller, Andreas Vierling
  • Method for estimating a bearing load using strain parameters to account for contact angle variation
    Patent number: 11428590
    Abstract: A method for estimating a bearing load in a bearing having a first ring, a second ring and a row of rolling elements arranged between the first ring and the second ring, the method including: equipping the first ring with at least one strain sensor probe, transmitting a strain signal waveform from the at least one strain sensor probe to an electronic control unit, extracting shape information of the waveform of the strain signal using a first harmonic component (u) and a second harmonic component (v) of the strain signal, and calculating a bearing load estimation as a polynomial function of the first and second harmonic components (u, v) of the strain signal.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: August 30, 2022
    Assignee: AKTIEBOLAGET SKF
    Inventors: Defeng Lang, Hendrik Anne Mol, Stijn van Eesbeek, Henricus van Genuchten
  • Reduced friction conductive assembly for bearings
    Patent number: 11421739
    Abstract: An electrically conductive assembly is for a bearing disposed about a shaft and disposed within a housing. The conductive assembly includes an annular retainer coupleable with a bearing outer ring or with the bearing housing and having a centerline and an open inner end defining an annular groove. At least two and preferably several conductors each have a radially outer end disposed within the retainer groove and a radially inner end contactable with the shaft. Each conductor is formed of a plurality of conductive fibers arranged to extend radially inwardly from the retainer inner end. The at least two conductors are spaced apart circumferentially about the centerline so as to define at least two axial passages between the retainer and the shaft. Preferably, the conductors are separated by spacers formed of conductive fibers each having a length shorter than the length of the fibers of the conductors.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: August 23, 2022
    Assignee: AKTIEBOLAGET SKF
    Inventors: Mathieu Hubert, Gene A. Kovacs, David Christopher Rybski
  • Retainer for unitary seal assembly
    Patent number: 11421785
    Abstract: A seal assembly is for sealing an annular space between a shaft and a housing, the housing having a bore and a radial end surface extending outwardly from the bore. The seal assembly includes an outer case disposeable within the housing bore, configured to support a primary seal member and having a radially-outwardly extending flange disposeable against the housing radial surface, the flange defining an annular groove. An inner case is disposed within the outer case and is disposeable upon the shaft. An annular retainer formed of a rigid polymeric material has an outer radial end disposed within the flange groove, an inner radial end disposeable about the shaft and a radial retention surface. The retainer retention surface extends between the inner and outer ends and is contactable by the inner case so as to retain the inner case disposed within the outer case.
    Type: Grant
    Filed: January 21, 2021
    Date of Patent: August 23, 2022
    Assignee: AKTIEBOLAGET SKF
    Inventor: John Arthur Wilkins
  • Low-friction sealing device for wheel hub assemblies connected to constant-velocity joints
    Patent number: 11420467
    Abstract: A sealing device for wheel hubs connected to constant-velocity joints including a first sealing assembly arranged between inner and outer rings of the wheel hub, and a second sealing assembly mounted on the inner ring and straddling the wheel hub and an outer ring of the constant-velocity joint. The first sealing assembly has a signal generating element having an annular insert mounted externally on a shield facing the constant-velocity joint and extending axially projecting above part of an annular step formed, on the same side as the constant-velocity joint, on a radially outer side surface of the inner ring, in a position immediately adjacent to the sleeve portion of the first shield. The second sealing assembly includes a tubular support keyed onto the inner ring by its first end on the outside edge folded in the manner of an L and shaped to engage inside the annular insert.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: August 23, 2022
    Assignee: AKTIEBOLAGET SKF
    Inventors: Giorgio Barberis, Fabio Nosenzo
  • Elastomeric bearing having reduced-weight end cap
    Patent number: 11415173
    Abstract: An elastomeric bearing includes a first race having an axis of rotation, a second race coaxially arranged relative to the first race and spaced from the first race by a gap, a bearing body in the gap connecting the first race to the second race, the bearing body comprising a plurality of first laminae coaxial with the first race and a plurality of second laminae coaxial with the first race, the first laminae being formed from a different material than the second laminae, and a metal end cap connected to the first race or to the second race. The metal end cap includes an at least partially hollow interior and/or is formed by an additive manufacturing process.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: August 16, 2022
    Assignee: AKTIEBOLAGET SKF
    Inventors: Daniel P. Sottiaux, Jeffrey L. George, Derek R. Wright
  • Split V-ring seal assembly
    Patent number: 11415224
    Abstract: A seal assembly includes an annular seal body disposable about a first member and having an axial sealing lip engageable with the radial surface of a second member, first and second circumferential ends and an outer circumferential surface. A plurality of teeth extend outwardly from the outer surface and are spaced circumferentially about a centerline. A first coupler member has teeth disposed between and attached to the teeth of the seal body to form a first attachment interface adjacent to the seal body first end. A second coupler member has teeth disposed between and attached to the teeth of the seal body to form a second attachment interface adjacent to the seal body second end. The first and second coupler members are connected so as to couple the two ends of the seal body and to retain the seal assembly about the first member.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: August 16, 2022
    Assignee: AKTIEBOLAGET SKF
    Inventors: Tadd McBride, Brandon Green, Greg G. Gildea
  • Rolling-element bearing including a cover for retaining a lubricant
    Patent number: 11415175
    Abstract: A rolling-element bearing includes an outer ring, an inner ring having a bore, a bearing interior between by the outer ring and the inner ring, a plurality of rolling elements in the bearing interior, and a cover attached to the rolling-element bearing such that it extends along an end face of the rolling-element bearing and covers the bearing interior, the inner ring, and the bore.
    Type: Grant
    Filed: March 24, 2021
    Date of Patent: August 16, 2022
    Assignee: AKTIEBOLAGET SKF
    Inventor: Andre Ress
  • Method for assembling a tapered roller bearing, and assembly unit for this purpose
    Patent number: 11415178
    Abstract: A method for assembling a tapered roller bearing includes providing a first rolled-on surface element having a raceway and an axial end surface and mounting a plurality of tapered rollers separated by a plurality of bearing cage segments or by a plurality of roller spacers on the raceway, where each of the plurality of tapered rollers has a frustoconical rolling surface and a circular end surface meeting at a junction. Also placing at least one assembly ring around the plurality of tapered rollers to hold the plurality of tapered rollers against the first rolled-on surface element, and moving a second rolled-on surface element coaxially toward the first rolled-on surface element such that a portion of the second rolled-on surface element contacts the at least one assembly ring and pushes the at least one assembly ring axially off the plurality of tapered rollers.
    Type: Grant
    Filed: August 9, 2021
    Date of Patent: August 16, 2022
    Assignee: AKTIEBOLAGET SKF
    Inventors: Dominik Fritz, Denny Fritze, Michael Reugels
  • System and procedure of a bearing arrangement
    Patent number: 11415956
    Abstract: A system with at least one control unit and a bearing arrangement that includes at least one sensor unit for measuring a quantity. The system is configured to find out with the help of the at least one sensor unit first values of the quantity in a first time span for a first set of instants of time. The system is further configured to infer second values of the quantity for a second set of instants of time from third values measured via the at least one sensor unit in a second time span. The first set of instants of time is different from the second set of instants of time.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: August 16, 2022
    Assignee: Aktiebolaget SKF
    Inventors: Per-Erik Larsson, Fredrik Sundquist
  • Sensorized roller for a bearing having integrated energy harvesting device
    Patent number: 11415177
    Abstract: A sensorized roller for a bearing includes a bore that extends through the roller, a sensor for measuring at least one physical state of the roller bore and producing a first signal indicative of the measured physical state, a wireless transmitter for receiving the first signal from the sensor and wirelessly transmitting a second signal based on the first signal, and a generator configured to be rotated by a movement of the roller, the generator being electrically connected to the sensor. The measuring unit, the wireless transmitter and the generator are located inside the bore.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: August 16, 2022
    Assignee: AKTIEBOLAGET SKF
    Inventors: Nicolaas Simon Willem Den Haak, Andreas Clemens van der Ham
  • Cage for a rolling-element bearing
    Patent number: 11401972
    Abstract: A rolling-element bearing cage includes a plurality of pockets each configured to receive a rolling element, and retaining elements associated with each of the plurality of pockets, each of the retaining elements being configured to secure the rolling elements against falling out of the pockets in a radially inward direction while permitting the rolling elements to be inserted into the pockets in a radially outward direction.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: August 2, 2022
    Assignee: AKTIEBOLAGET SKF
    Inventors: Ludwig Edelmann, Roland Haas, Dominic Namyslo, Matthias Schuler, Johannes Zang
  • Device for detecting a defect of a rotating arrangement
    Patent number: 11402298
    Abstract: A device for detecting a defect of a rotating arrangement is disclosed. The rotating arrangement provides one or more rotating elements or groups of rotating elements. The device includes a definition unit for defining a dynamic threshold based on a static threshold of an actually monitored rotating element or group of rotating elements and based on a mean value of static thresholds of a plurality of similar functioning rotating elements or groups of rotating elements, and a detection unit for detecting a defect by comparing a current parameter value of the actually monitored rotating element or group of rotating elements with the dynamic threshold. Also, a method for detecting a defect of a rotating arrangement is disclosed.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: August 2, 2022
    Assignee: Aktiebolaget SKF
    Inventor: Per-Erik Larsson
  • Bearing unit and method for manufacturing a bearing unit
    Patent number: 11401967
    Abstract: A bearing unit has at least one outer ring and at least one spring unit mounted axially adjacent to the at least one outer ring and connected to the at least one outer ring by a snap fit. The spring unit includes a support element having a connecting element such as a rib or a plurality of lugs, for connecting the support element to the bearing outer ring and a wave spring fastened to the support element.
    Type: Grant
    Filed: April 2, 2021
    Date of Patent: August 2, 2022
    Assignee: AKTIEBOLAGET SKF
    Inventors: Andreas Heile, Sebastian Kraus
  • Suspension thrust bearing device and suspension strut equiped with such a device
    Patent number: 11396908
    Abstract: A suspension thrust bearing device for use with a suspension spring in an automotive suspension strut of a vehicle. The device includes a bearing having upper and lower annular bearing members in relative rotation, the lower annular bearing member, and a damping element. An axial stiffening insert in a hub of lower annular bearing member provides a lower end curved towards the interior of the device. Lower annular bearing member has at least one slender groove opening radially outwards and having a bottom end opening axially downwards, the damping element providing a portion fitted within the slender groove.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: July 26, 2022
    Assignee: Aktiebolaget SKF
    Inventors: Xavier Blanchard, Guillaume Jouanno, Bruno Montboeuf, Desire Vidot