Patents Assigned to SKF
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Publication number: 20150090205Abstract: A mechanical system, comprising a tappet including a body, a support element defining two bores centered on a first axis, a pin comprising two opposite ends each adapted to be fitted in one of the two bores, and a roller element positioned between the two bores along the first axis and movable in rotation relative to the pin around the first axis. The support element is distinct from the body and fixed thereto, and the support element also comprises at least one antirotation device integrally formed thereto. The mechanical system can be integrated into an injection pump and/or a valve actuator.Type: ApplicationFiled: September 29, 2014Publication date: April 2, 2015Applicant: AKTIEBOLAGET SKFInventors: Benoît HAUVESPRE, Nicolas BERRUET, Charles CHAMBONNEAU, François CHAMPALOU, Samuel VIAULT
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Patent number: 8996142Abstract: A predictive alignment process for aligning coupled rotating shafts extending from a pair of adjacently located rotating machines. The process includes a step of monitoring the rotating machines to obtain physical characteristics that change during operation and could cause variance in alignment between a non-operating state and an operating state. The process would monitor changes in alignment and correlate the changes in physical characteristics and the operational alignment. The process can monitor and record environmental conditions proximate the rotating machinery and correlate the operational alignment and the environmental changes to provide predictive alignment directions used to guide an alignment engineer to align coupled shafts where the alignment is optimized when in operation.Type: GrantFiled: December 20, 2011Date of Patent: March 31, 2015Assignee: Aktiebolaget SKFInventor: Jan Willem Karl Vietsch
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Patent number: 8992092Abstract: A flanged bearing ring has a tubular core of steel and an outer flange of a light metal in which there are formed axial through bores for accommodating bolts for mounting a wheel to the ring; fixed in each bore is a steel insert which forms a threaded inner cylindrical cavity extending between two opposite faces of the flange, and one or two transverse shoulders which are in contact with the material of the flange so as to oppose relative axial movements of the steel insert with respect to the flange.Type: GrantFiled: December 9, 2013Date of Patent: March 31, 2015Assignee: Aktiebolaget SKFInventor: Carmelo Gulli
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Patent number: 8996335Abstract: Methods and systems to achieve highly efficient rotational machine integrity determinations in which at least one sensor (106) senses indicia (105) such as time-varying rotational indicia from a rotational motive apparatus (103) and a processor (108) may provide many different functions including but not limited to operational function energy apportioning decisional processing, data compression, intelligent hierarchical data ranking, differential data processing, or the like perhaps to generate information (109) such as a rotational integrity abridgment transmissor to which an abridgment transmissor electromagnetic signal (112) may be created and perhaps even transmitted from a rotational motive apparatus to facilitate a machine integrity determination.Type: GrantFiled: December 31, 2012Date of Patent: March 31, 2015Assignee: Aktiebolaget SKFInventor: Johannes I. Boerhout
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Patent number: 8991327Abstract: A signaling device for signaling heating in a mechanical system susceptible to undergo contact heating during operation. The signaling device includes a body containing a thermally triggered charge generating combustion gas, ignition of the charge able to be triggered under the effect of a predetermined heat contribution, from a heating area of the body toward the charge, or under the action of an ignition command, a reservoir containing a fluid, and delivery means delivering pressurized fluid outside the reservoir through the action, directly or through an intermediate member moving in the reservoir, of the combustion gases. The signaling device also comprises at least one visual signaling element for visually signaling combustion of the charge, the visual signaling element being visible at an outer peripheral area of the signaling device after combustion of the charge. The invention also relates to a mechanical system equipped with at least one such signaling device.Type: GrantFiled: December 5, 2012Date of Patent: March 31, 2015Assignee: SKF Aerospace FranceInventors: Herve Carrerot, Yves Maheo
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Publication number: 20150086147Abstract: Flanged radial bearing with rolling elements provided with an outer ring radially defined by an outer surface; an inner ring mounted inside and coaxially with the outer ring; a row of rolling elements between the two rings to allow the two rings to rotate relative to one another; and a flange secured to the outer ring and located in correspondence of an assembly groove made around said outer surface; the flange being assembled, in such a way that it cannot be disengaged, to the outer ring.Type: ApplicationFiled: September 25, 2014Publication date: March 26, 2015Applicant: Aktiebolaget SKFInventors: Roberto MOLA, Matteo PASTORINO, Riccardo RESTIVO, Gianpiero SCALTRITI
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Publication number: 20150084464Abstract: A permanent magnet rotor shaft assembly for a high speed electrical machine provides a permanent magnet cylindrical core having a longitudinal axis, the cylindrical core being axially compressed by first and second end shafts and being radially compressed by a sleeve made of a non-magnetic high strength metal. At least one of the first and second end shafts includes, facing the cylindrical core, a central shoulder head that cooperates with a mating central recess made in a central portion of a front face of the cylindrical core. An easy concentric alignment of the first and second end shafts with the permanent magnet cylindrical core is allowed while inserting the sleeve and the stiffness of the assembled set is enhanced.Type: ApplicationFiled: September 29, 2014Publication date: March 26, 2015Applicant: SKF MAGNETIC MECHATRONICSInventors: Lateb Ramdane, Joaquim Da Silva
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Patent number: 8985710Abstract: A flanged bearing ring (10) for the wheel of a motor vehicle includes a tubular core (15) and an outer body (16) around the core. The core (15) and the outer body are made of two different materials and joined as a single piece. The outer body forms a radial flange (17) and is made of a lighter material than that of the core. At both axial ends of the ring, the radially outer surface of the core provides a succession of depressions (27) and ridges (28) which extend in a circumferential direction, and cause the formation of complementary recesses and reliefs in the outer body (16). This results in a long meander-like path that opposes or at least delays the entrance of contaminant or corrosive agents between the outer body (16) and the core (15).Type: GrantFiled: March 22, 2012Date of Patent: March 24, 2015Assignee: Aktiebolaget SKFInventors: Andreas Knopf, Paolo Re
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Patent number: 8985589Abstract: A seal assembly for sealing a space between a shaft and a housing includes a seal having a central axis, an inner annular sealing lip sealingly engageable with the shaft and an outer annular rim with an outer circumferential surfaces engageable with the housing inner surface. At least one and preferably two support members are disposed within the annular rim and at least one and preferably a plurality of adjustment devices are coupled with the support members. Each adjustment device is configured to displace at least a portion of each support member radially outwardly with respect to the central axis, to displace at least a portion of the rim generally toward the housing inner surface, and/or to displace at least a portion of each support member radially inwardly toward the central axis to permit displacement of at least a portion of the rim generally away from the housing inner surface.Type: GrantFiled: September 30, 2013Date of Patent: March 24, 2015Assignee: Aktiebolaget SKFInventors: Yefim Epshetsky, John Manuel Dominguez
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Patent number: 8985554Abstract: An apparatus of the present invention is used for movable objects upwardly and downwardly relative to a fixed surface. The apparatus includes a lifting device presented by a pair of blocks movable relative one and the other. A carriage device is supported by the blocks. The carriage device is connected to object to be lifted relative the fixed surface. An actuator is connected to the blocks. As the actuator moves the blocks relative one and the other, the blocks move above the carriage device relative the fixed surface at various distances lift and lower the objects.Type: GrantFiled: August 31, 2011Date of Patent: March 24, 2015Assignee: Aktiebolaget SKFInventor: Yefim Epshetsky
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Patent number: 8984979Abstract: Ball screw assembly comprising a screw (2) provided with an outer thread (3); a nut (4) provided with an inner thread (5); a series (6) of balls (7) able to circulate along a circulating path (10) between the screw and the nut, along which the balls are engaged in the threads thereof; and recirculating means (8) defining a recirculating channel (9) to carry balls from one end to the other end of said circulating path (10); The recirculating channel (9) comprising a return channel (14) provided on the nut and, between the ends of this return channel and the corresponding ends of said circulating path, deflecting channels (27, 28) which are defined respectively between surfaces (25) of deflecting elements (20, 21) engaged in respective holes (11, 12) of the nut (4) and local zones (26) of surfaces (16) of these respective holes.Type: GrantFiled: April 17, 2012Date of Patent: March 24, 2015Assignee: Aktiebolaget SKFInventors: Eric Allegri, Christophe Durand, Jerome Dubus, Romuald Lescorail
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Publication number: 20150078695Abstract: A tubular bushing that is co-moldable with tubs of washing machines, the tubular bushing is engaged by a drive shaft of the washing machine, that extends along a central axis (A) and is provided with two rolling bearings, arranged at a given distance from each other along the axis (A) to rotatably support the drive shaft of the washing machine with respect to the tub. The tubular bushing further provides a containing sleeve, made of plastic material and co-molded around the two bearings; the sleeve defining an axial communication duct between two sides of the tubular bushing, the duct being closed, at least during co-molding, by a disposable cap, engaged in an annular edge of the containing sleeve.Type: ApplicationFiled: September 15, 2014Publication date: March 19, 2015Applicant: Aktiebolaget SKFInventors: Roberto Mola, Riccardo Restivo, Gianpiero Scaltriti
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Publication number: 20150078693Abstract: A blocking end cap for a rolling bearing in a railway axle box of a supporting device for a railway axle is provided. The cap is shaped as a concave disc delimited by an annular side wall having a symmetry axis (A), a bottom wall arranged transversely to the symmetry axis (A), and an elbow-shaped, annular joining portion, connecting the bottom wall to the side wall. The thickness of the bottom wall measured in a direction parallel to the symmetry axis (A) is continuously variable in the radial direction between a maximum (S1) situated at the symmetry axis (A) and a minimum (S2) arranged at a radially outer edge of the cap defined by the side wall.Type: ApplicationFiled: September 12, 2014Publication date: March 19, 2015Applicant: Aktiebolaget SKFInventor: Marco Giovanni Francesco Capozzi
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Publication number: 20150078698Abstract: A rolling bearing assembly having a rotatable element that rotates with respect to a non-rotatable element around a central rotation axis is provided. The assembly includes rolling systems disposed between the rotatable and non-rotatable elements, the rolling systems having at least one rolling system providing rolling elements arranged along radial axes with respect to the rotation axis. The assembly has at least one elastic ring forming a raceway track mounted on the non-rotatable element so that the rolling elements cooperate with the elastic ring, the elastic ring in contact with the rolling elements by resilient elements mounted in holes distributed around the circumference of the non-rotatable element. The assembly has at least one blocking member mounted in the non rotatable element that protrudes in a hole of the elastic ring, the blocking member blocks the elastic ring from rotating around the central rotation axis with respect to the non-rotatable element.Type: ApplicationFiled: September 18, 2014Publication date: March 19, 2015Applicant: AKTIEBOLAGET SKFInventors: Bruno Capoldi, Juliette Delaby, Michel Nicolas
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Publication number: 20150078694Abstract: A tubular bushing co-moldable with tubs of washing machines is provided. The tubular bushing is located between a humid side and a dry side of the washing machine, crossed by a drive shaft extending along a central axis (A) and provided with two rolling bearings arranged along the axis (A); a spacer interposed between the two bearings; a sealing element arranged axially alongside a first bearing close to the humid side; and a containing sleeve which is co-molded around the two bearings and the spacer; the sealing element and the first bearing bound and axially enclose an annular chamber, which is further closed in the radial direction by the drive shaft and is in fluid connection with the external environment by means of two ducts extending directly through the containing sleeve, eliminating any pressure and/or temperature gradient between the annular chamber and the external environment.Type: ApplicationFiled: September 15, 2014Publication date: March 19, 2015Applicant: AKTIEBOLAGET SKFInventors: Roberto Mola, Riccardo Restivo, Gianpiero Scaltriti
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Publication number: 20150078697Abstract: A tubular bushing co-moldable with tubs of washing machines is provided. The tubular bushing is suitable to be engaged by a drive shaft of the washing machine extending along a central axis (A) and being provided with two rolling bearings (20), arranged at a given distance from each other along the axis (A) to allow rotation of the drive shaft with respect to the tub, and a containing sleeve, made of plastic and by means of co-molding around the two bearings; a current dispersion means being incorporated in the containing sleeve and suitable to be electrically connected both to the drive shaft and to earth so as to prevent an accumulation of static electricity in the washing machine and prevent electrostatic discharges.Type: ApplicationFiled: September 15, 2014Publication date: March 19, 2015Applicant: AKTIEBOLAGET SKFInventors: Roberto Mola, Riccardo Restivo, Gianpiero Scaltriti
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Patent number: 8979386Abstract: A rolling-element bearing includes a first bearing ring (2) and a second bearing ring (4) opposing the first bearing (2) in a radial direction (3). A sealing element (6) of the rolling-element bearing includes a radially-encircling seal support (8) extending in the radial direction (3) by a predetermined distance towards the second bearing ring (4). The seal support (8) is interference-fit and removably attached to an axial end side (9) of the first bearing ring (2). A sealing lip (10) is attached to the seal support (8) and extends from an end of the seal support (8) opposite the first bearing ring (2) in the radial direction (3) up to a mating surface (12), which is part of the second bearing ring (2).Type: GrantFiled: November 22, 2011Date of Patent: March 17, 2015Assignee: Aktiebolaget SKFInventors: Andreas Gruber, Henning Kern, Jochen Lorenscheit, Edgar Pickel
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Patent number: 8979381Abstract: A bearing device includes a first bearing element and at least one second bearing element that is movably supported relative to the first bearing element and at least one seal unit that includes at least one attachment element that plays a role in attaching at least one seal element of the seal unit to the first bearing element. The attachment element includes at least a part of an antilock braking system (ABS) ring. The ABS ring may include through openings and be usable with a sensor that senses a magnetic field generated by the ABS ring.Type: GrantFiled: September 11, 2013Date of Patent: March 17, 2015Assignee: Aktiebolaget SKFInventors: Ludwig Edelmann, Matthias Schuler
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Patent number: 8979380Abstract: The sensing of a mechanical load on a rolling element bearing, in operational use of the bearing, is carried out by measuring the strain on a surface (212) of the bearing that faces in a direction substantially perpendicular to a direction of the mechanical load.Type: GrantFiled: December 6, 2010Date of Patent: March 17, 2015Assignee: Aktiebolaget SKFInventors: Nicolaas Simon Willem Den Haak, Brian Murray, Andreas Clemens Van Der Ham
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Patent number: 8978424Abstract: The invention relates to a housing device provided with a system for detecting the load applied to an element arranged in the housing, an internal part configured in such a way as to hold said element, and an external part for fixing the device to a mechanical group, the internal part being connected to the external part by at least two deformable connection parts in such a way that the internal part can be displaced in relation to the external part under the action of a load applied to the element. The system for detecting the applied load comprises a means for directly detecting the displacement of one of the parts, internal or external, in relation to the other part, external or internal, under the action of a load applied to the element.Type: GrantFiled: December 18, 2006Date of Patent: March 17, 2015Assignee: Aktiebolaget SKFInventors: Francois Niarfeix, Thierry Wable, Sebastiano Calvetto