Patents Assigned to AS SKF
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Patent number: 11761488Abstract: A wheel bearing assembly includes a fixed inner axle with at least one inner race, a rotatable outer hub disposed about the axle and having at least one outer race and rolling elements disposed between the inner and outer races. An annular seal is disposed between the axle and the hub and is located adjacent to the inner and outer races. A shield is spaced axially from the seal such that the seal is disposed between the rolling elements and the shield. The shield includes a rigid annular body having an outer radial end coupled with the outer hub, preferably by a plurality of couplers, and an inner radial end defining a central opening for receiving the axle and located adjacent to the inner axle or a component disposed upon the axle. As such, the annular body substantially obstructs an annular interior space to prevent substances from contacting the seal.Type: GrantFiled: November 25, 2021Date of Patent: September 19, 2023Assignee: AKTIEBOLAGET SKFInventor: Rico Dittmar
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Patent number: 11754584Abstract: The bearing provides a first ring and a second ring centered on an axis, each of the first and second rings being provided with an outer cylindrical surface, with an inner cylindrical surface, and with lateral faces that axially delimit the outer and inner cylindrical surface. One of the inner and outer cylindrical surfaces and/or one of the lateral faces of the first ring includes a textured area provided with a groove extending circumferentially and with two protrusions disposed one on each side of the groove and extending along the groove.Type: GrantFiled: April 15, 2022Date of Patent: September 12, 2023Assignee: Aktiebolaget SKFInventors: Vincent Sausset, Yves-André Liverato, Sylvain Chaussat
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Patent number: 11754123Abstract: A bearing housing is provided with a cooling channel in at least part of the circumference around the bearing. The cooling channel is provided with a flow guide member at least in part of its flow section to construct a tortuous passage whose flow distance is longer than the corresponding circumferential length of the flow section. On the basis of the above-mentioned bearing housing, the present invention also provides a bearing housing unit, a continuous casting roll line and a continuous casting machine that use the bearing housing. The above-mentioned bearing housing adopts an optimized cooling channel design, which can obtain a better cooling effect without changing other structures of the bearing housing. Therefore, it is particularly suitable for upgrading existing equipment and has a huge cost advantage and a wide range of application prospects.Type: GrantFiled: September 20, 2021Date of Patent: September 12, 2023Assignee: Aktiebolaget SKFInventors: Jiakai Liu, Weiguang Cao, Zongkang Xu, Weifei Geng
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Patent number: 11754122Abstract: The bearing includes a first ring, a second ring, at least one row of radial and axial rolling elements arranged between axial and radial raceways provided on the rings. The second ring has a protruding nose engaged into an annular groove of the first ring and provided with the axial raceway and with the radial raceway of the second ring. The bearing further provides at least one cage for maintaining the row of axial rolling elements and at least one flange for guiding and maintaining the cage in radial direction. The flange axially abuts against a flat surface of the second ring. The bearing further includes a plurality of fixing screws to secure the flange to the second ring, the fixing screws extending axially through the flange.Type: GrantFiled: January 18, 2022Date of Patent: September 12, 2023Assignee: Aktiebolaget SKFInventors: Bruno Capoldi, Vincent Bredoire, Herve Dondaine
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Patent number: 11754117Abstract: A bearing includes a first ring, a second ring, at least one row of axial rolling elements, and at least one row of radial rolling elements arranged between axial raceways provided on the rings. The second ring has a protruding nose engaged into an annular groove of the first ring and provided with the axial raceway of the second ring. The bearing further includes at least one thrust ring delimiting a radial raceway for the axial rolling elements, and at least one spring system to axially push the thrust ring. The thrust ring is axially disposed between the axial rolling elements and the nose. The spring system is mounted on the nose. The groove of the first ring delimits a radial raceway for the axial rolling elements.Type: GrantFiled: January 28, 2022Date of Patent: September 12, 2023Assignee: Aktiebolaget SKFInventor: Bruno Capoldi
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Patent number: 11754118Abstract: An inner half-ring of a spherical plain bearing has a spherical outer surface, a cylindrical inner surface, and a first flat front face and a second flat front face delimiting the half-ring in a circumferential direction. The first and second flat front faces extend between the outer surface and the inner surface, and a first central groove is formed in the first front face and extends between the outer surface and the inner surface.Type: GrantFiled: January 18, 2022Date of Patent: September 12, 2023Assignee: SKF AEROSPACE FRANCE S.A.SInventors: Christophe Domps, Vincent Guyard
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Patent number: 11754454Abstract: A piezoelectric strain sensor unit for a rolling bearing includes a piezoelectric strain sensor, and a sensor holder provided with a main body having a front face intended to be into contact with a component of the rolling bearing and a rear face, and with at least two flexible arms mounted on the main body and supporting opposite ends of the piezoelectric strain sensor, the piezoelectric strain sensor being axially located on the side of the rear face of the main body while remaining spaced apart from the rear face. The sensor holder is provided with a central pin which protrudes axially with regard to the front face of the main body and which is axially moveable with regard the main body, the central pin axially abutting onto the piezoelectric strain sensor.Type: GrantFiled: March 1, 2023Date of Patent: September 12, 2023Assignee: Aktiebolaget SKFInventors: Andrew Campbell, Hans Soetens, Allan Thomson
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Publication number: 20230280239Abstract: A monitoring device for monitoring a bearing in an electromagnetic field environment includes a vibration sensor for delivering at least one measurement that includes at least one vibration frequency generated by a bearing, and a processing module that includes a first processing module configured to determine at least one normalized measured value from the at least one vibration frequency, a filtering module configured to compare the normalized measured value to at least one predetermined normalized reference value indicative of electromagnetic phenomena acting on the bearing, and a second processing module configured to process the at least one vibration frequency to determine a bearing defect if the normalized measured value is different from the at least one predetermined normalized reference value.Type: ApplicationFiled: March 1, 2022Publication date: September 7, 2023Applicant: AKTIEBOLAGET SKFInventors: Elizabertus Maljaars, Alireza Azarfar, Kareem Gouda, Lambert Karel van Vugt, Cornelis Harm Taal
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Patent number: 11746752Abstract: A method for detecting at least one machine defect provides defining from the machine kinematic data at least one condition indicator reflecting its condition, recording operating condition data of the machine and condition monitoring data of the machine during a predetermined period when the machine is operating normally, determining condition indicator values using condition monitoring data, and for determining current condition indicator values from the at least one condition indicator and the current condition monitoring data, a machine learning algorithm, predicting condition indicator values with respect to the current operating condition data, training the machine learning algorithm to establish a relation between the operating condition data and condition indicator values, and comparing the current condition indicator values and the predicted condition indicator values, and for determining if the machine is presumed to operate normally or not according to the result of the comparison.Type: GrantFiled: July 20, 2021Date of Patent: September 5, 2023Assignee: Aktiebolaget SKFInventor: Stig Erik Daniel Strömbergsson
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Patent number: 11746826Abstract: A roller for a roller bearing has a first end surface and a second end surface and a rolling surface between the first and second end surfaces. The first end surface has an at least partially ground profile having a non-constant curvature such as a logarithmic profile. Also, an assembly including a grinding tool and a roller with an end surface having a ground non-constant curvature.Type: GrantFiled: August 25, 2021Date of Patent: September 5, 2023Assignee: AKTIEBOLAGET SKFInventors: Mathias Haissig, Helmut Haupt, Johannes Ullmann, Markus Volkmuth
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Patent number: 11746878Abstract: A pulley device for a transmission element having a pulley, a bearing, and at least one sleeve mounted freely in the bore of the inner ring of the bearing. The pulley device includes at least one annular protection shield, the shield retained axially in a first element from the pulley and coming into immediate proximity with the other element, the other element having at least one shoulder projecting radially ensuring that it is axially retained with the shield.Type: GrantFiled: March 17, 2022Date of Patent: September 5, 2023Assignee: Aktiebolaget SKFInventors: Benoit Arnault, Nicolas Tronquoy
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Patent number: 11746828Abstract: An axial seal assembly includes an inner annular shield having an axial portion disposable about the shaft at a position adjacent to the bearing and a radial portion extending radially outwardly from the axial portion. An outer annular seal has an axial portion engageable with the outer member bore, a radial portion extending radially inwardly from the axial portion and on or more axial sealing lips engaged with the shield radial portion. The seal radial portion is spaced from the shield radial portion by a predetermined axial distance during use. The seal has at least one coupler section engageable with the shield radial portion or the shield axial portion when an axial spacing distance between the seal radial portion and the shield radial portion is less than the predetermined distance to retain the shield coupled with the seal when the seal assembly is separate from an outer member bore.Type: GrantFiled: November 25, 2021Date of Patent: September 5, 2023Assignee: AKTIEBOLAGET SKFInventor: Rico Dittmar
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Patent number: 11746829Abstract: A sensor bearing assembly includes a bearing having an inner ring and an outer ring centered on an axis, an impulse ring secured to the outer ring of the bearing, and a sensor device for detecting rotational parameters of the impulse ring. The sensor device includes a sensor housing and at least one sensor element supported by the sensor housing and cooperating with the impulse ring. Also an annular spacer adapted to axially abut against a lateral face of the inner ring of the bearing. The sensor housing is fixedly secured to the spacer, the inner diameter of the spacer is equal to the inner diameter of the inner ring of the bearing, and the outer diameter of the impulse ring is less than or equal to the outer diameter of the outer ring of the bearing.Type: GrantFiled: May 10, 2022Date of Patent: September 5, 2023Assignee: AKTIEBOLAGET SKFInventor: Manoj M Babu
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System and method for recognizing and forecasting anomalous sensory behavioral patterns of a machine
Patent number: 11733688Abstract: A system and method for recognizing and forecasting anomalous sensory behavioral patterns of a machine, including: monitoring a first set of time-stamped sensory input data related to at least one machine; determining, upon analysis of the first set of time-stamped sensory input data, a first suspicious pattern of a first anomalous sensory input behavior associated with the first set of time-stamped sensory input data; comparing the first suspicious pattern to a second pattern of a second anomalous sensory input behavior that is associated with a second set of time-stamped sensory input data, wherein the second pattern previously determined to be indicative of a machine failure; and, determining if the first suspicious pattern is correlated above a predetermined threshold with the second pattern.Type: GrantFiled: April 21, 2021Date of Patent: August 22, 2023Assignee: AKTIEBOLAGET SKFInventors: Waseem Ghrayeb, David Lavid Ben Lulu -
Patent number: 11736041Abstract: A suspension assembly provides a suspension frame and a supporting frame, the suspension frame being movably coupled to the supporting frame. The suspension assembly further provides at least one flexure that links the suspension frame to the supporting frame. The suspension assembly including at least one stopper to limit movement of the supporting frame and the suspension frame with respect to each other.Type: GrantFiled: December 27, 2019Date of Patent: August 22, 2023Assignee: Aktiebolaget SKFInventors: Maarten Lustig, Sjoerd Van Bracht, Wout Ypma
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Patent number: 11731456Abstract: A wheel hub bearing for motor vehicles providing a hub and a bearing unit in turn comprising a radially outer ring, at least one radially inner ring, at least one crown of rolling bodies between the radially outer ring and the radially inner ring. The hub has a radial stiffening. The radial stiffening of the hub has a misalignment respect to a seat. Accordingly, a distance between a centerline axis of the seat of the radially inner ring on the hub and a center line of the radial stiffening, less than or equal to 25% of a length of the seat.Type: GrantFiled: January 29, 2020Date of Patent: August 22, 2023Assignee: Aktiebolaget SKFInventors: Maurizio Bertola, Fausto Morello, Abhijeet Somwanshi
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Patent number: 11732792Abstract: A pulley device for a tensioner roller or winding roller of a transmission element, providing a pulley, and a bearing. The bearing includes a rotating outer ring mounted to the pulley, a fixed inner ring, and at least one row of rolling elements arranged between the rings. The inner ring of the bearing has at least one end portion protruding axially with respect to the outer ring. The pulley is provided with at least one pulley element that is C-shaped in axial section. One of the at least one pulley elements is provided with a lateral portion extending substantially radially to pass into the immediate vicinity of an outer surface of the axially protruding end portion of the inner ring.Type: GrantFiled: November 15, 2021Date of Patent: August 22, 2023Assignee: Aktiebolaget SKFInventors: Benoit Arnault, Mickael Chollet, Nicolas Tronquoy, Samuel Viault
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Patent number: 11732757Abstract: A plain bearing includes a base body having a substantially cylindrical bore bounded by a bore surface, and the bore surface has a longitudinal recess in a load-zone region that is open radially inward and has curved ends connected by axially extending sides. A cylindrical shaft extends through the bore and over the load zone and has an outer diameter less than an inner diameter of the bore. A fluid channel has an opening in the recess and provides fluid to the recess at a pressure that is maintained at a level to offset no more than about 40 percent of a force produced by the shaft in the direction of the load zone.Type: GrantFiled: June 27, 2019Date of Patent: August 22, 2023Assignee: SKF MARINE GMBHInventor: Detlef Hammerschmidt
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Patent number: 11725696Abstract: A sensor bearing unit includes a bearing having a first ring and a second ring centered on an axis, and an impulse ring secured to the first ring of the bearing. The impulse ring includes a radial portion mounted in axial contact against a lateral face of the first ring of the bearing and at least one opening extending through the thickness of the radial portion such that a part of the lateral face of the first ring of the bearing is exposed through the at least one opening.Type: GrantFiled: May 10, 2022Date of Patent: August 15, 2023Assignee: AKTIEBOLAGET SKFInventors: Maruti Vitthal Khaire, Manoj M Babu
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Patent number: 11725734Abstract: A seal assembly includes an annular rigid support member having a centerline and including an axial portion coupleable with the outer member and a radial portion extending inwardly from the axial portion. The radial portion has an outer end formed with the axial portion and an inner end defining a central opening disposeable around the shaft and being formed asymmetrical about the centerline and/or having a varying radial distance from the centerline. An annular sealing member has an outer portion attached to the support member and an inner portion with a first end providing a sealing lip, the sealing lip sealingly engageable with a running surface about a shaft to define a sealing interface, and a second end attached to the inner end of the support member radial portion. As such, contact pressure of the sealing lip against the running surface varies about a circular perimeter of the sealing interface.Type: GrantFiled: December 17, 2021Date of Patent: August 15, 2023Assignee: AKTIEBOLAGET SKFInventor: Robert D. Pecak