Patents Assigned to SKF
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Publication number: 20130279837Abstract: The rolling bearing, in particular for a power steering mechanism, comprises an inner ring, an outer ring, an elastic sleeve in contact axially and radially with one of said rings, and a housing holding the sleeve. The housing provides an axial portion and two lateral flanges extending the axial portion and mounted in contact against the sleeve to exert an axial prestress on said sleeve.Type: ApplicationFiled: April 23, 2013Publication date: October 24, 2013Applicant: AKTIEBOLAGET SKFInventors: Sylvain Bussit, Daniel Jansen, Thomas Lepine, Bruno Montboeuf
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Publication number: 20130278046Abstract: A sensor-carrier cap for a bearing of a wheel hub, the cap being made of plastic material and having a bottom wall arranged transversely to a central axis and providing a seat for accommodating a sensor, a cylindrical mounting wall extending axially from one side of the bottom wall around the axis; snap locking means projecting in a radially outer direction from the cylindrical wall, for locking the sensor-carrier cap on a tubular appendage of a wheel hub-bearing.Type: ApplicationFiled: April 24, 2013Publication date: October 24, 2013Applicant: AKTIEBOLAGET SKFInventors: Luca Ciulla, William Finetti, Philippe Weber
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Publication number: 20130277148Abstract: A lubrication system for lubricating bearings that includes at least one lubrication pump for pumping lubricant to the bearings and at least one metering valve for distributing the pumped lubricant throughout the lubrication system to the bearings. The system further includes a lubrication controller in communication with the at least one lubrication pump and at least one metering valve for controlling the lubrication system. The controller has firmware configured to provide a sequence of instructions to perform specified tasks and hardware that carries out the sequence of instructions to perform the specified tasks. In an unconfigured and unconnected state, the lubrication controller can be configured by reprogramming the firmware, to selectively control at least one of a series progressive lubrication system, a dual line lubrication system and a single line parallel lubrication system.Type: ApplicationFiled: April 20, 2012Publication date: October 24, 2013Applicant: AKTIEBOLAGET SKFInventors: David BECK, Nathan DONOVAN, Eric KRASSINGER
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Patent number: 8561996Abstract: The bearing seal assembly (50) includes a metal shield (70) and a resilient multi-lip sealing gasket (60) secured to the metal shield. The metal shield is supported in use by an outer ring (20) of a rolling contact bearing and includes a diagonally extending central portion (72). The sealing gasket (60) provides a number of contacting lips (62-64) facing an inner ring of the rolling contact bearing. A first, main contacting lip (66) exerts a first radial load on the inner ring. A second contacting lip (62) extends from the first lip (66) and exerts a second radial load on the inner ring lower than the first radial load. A third contacting lip (64) is on the opposite side of the second lip (62) with respect to the first lip (66) and exerts a third radial load on the inner ring lower than the first radial load but greater than the second radial load.Type: GrantFiled: May 25, 2009Date of Patent: October 22, 2013Assignee: Aktiebolaget SKFInventors: Fabio Picatto, Davide Zanghi
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Patent number: 8564399Abstract: A vibration protection and condition monitoring system with true digital signal processing based design, with very limited analog based general signal conditioning and integrated specific sensor conditioning and sensor power supply options. In addition to the support for common Eddy Current Probe Systems (employing an external Driver), the device also supports direct connection of the Eddy Current Probe to the module, due to an built-in driver and linearization functionality. The system is a distributed system where the vibration protection and at least a part of the condition monitoring is in an intrinsically safe (IS) distributed unit located on or at the rotating machinery, even in hazardous areas.Type: GrantFiled: June 22, 2007Date of Patent: October 22, 2013Assignee: Aktiebolaget SKFInventors: Raymond Huggett, David Mellor
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Patent number: 8562767Abstract: A bearing component formed from a bearing steel, wherein the component has an outer surface and comprises through-hardened bainite and/or martensite and has a substantially homogeneous chemical composition, at least a part of the bearing component having a compressive residual stress profile comprising ?25 to ?1000 MPa at the near surface, wherein the near surface is defined as a region 500 microns or less below the outer surface.Type: GrantFiled: October 3, 2008Date of Patent: October 22, 2013Assignee: Aktiebolaget SKFInventors: Ingemar Strandell, Peter Neuman, Berndt Mikael Sundqvist, Steven Lane
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Publication number: 20130269194Abstract: An alignment head system (1, 31) for taking alignment data with respect to a pair of shafts (4, 5) coupled to each other by means of a coupling (6) comprises a data acquisition device (11) configured to wirelessly receive data, and alignment heads (2, 3). Each alignment head (2, 3) is configured to take alignment data with respect to the shafts (4, 5), to wirelessly send the alignment data to the data acquisition device (11), and to forward alignment data received from the other alignment head (2, 3).Type: ApplicationFiled: October 19, 2010Publication date: October 17, 2013Applicant: AKTIEBOLAGET SKFInventor: Mark David Sansom
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Publication number: 20130272640Abstract: A retaining cage for the rolling elements of a rolling-contact bearing, having an annular body featuring seven pockets capable of restraining seven respective rolling elements of a rolling-contact bearing, the rolling elements being spaced apart around a centre (O) of the cage, the pockets being spaced from one another according to the following values of angular spacing between two consecutive pockets: 48.3°; 48.5°; 51.2°; 51.8°; 53°; 53.5°; 53.7°.Type: ApplicationFiled: April 17, 2013Publication date: October 17, 2013Applicant: AKTIEBOLAGET SKFInventors: Roberto Mola, Riccardo Restivo, Gianpiero Scaltriti
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Publication number: 20130264862Abstract: A sealing arrangement used to create a seal between a first part of a chain and a second part of the chain, wherein the second part can at least be pivoted in relation to the first part, includes a sealing ring with an annular sealing lip for sealing a lubricant area between parts which can be pivoted towards each other, and an elastic ring which is adapted to be fixed to one of the parts and which is adapted to exert pressure in the sealing ring. In addition, a supporting ring is arranged between the sealing ring and the elastic ring.Type: ApplicationFiled: March 18, 2013Publication date: October 10, 2013Applicant: AB SKFInventors: Hans-Joachim VOM STEIN, Wolfgang KORTE, Marcus STOJEK
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Patent number: 8550221Abstract: Spring having a first part (1) and a second part (2) moveable relative to each other along a longitudinal axis (L), a gap (3) being provided between the first part (1) and the second part (2), the first part (1) being provided with permanent magnets (4,4?), the second part (2) including soft magnetic material, the second part (2) having a variable permeability along the longitudinal axis (L) thereof for a magnetic field provided by the permanent magnets (4,4?) of the first part (1), wherein the second part (2), for providing the variable permeability for magnetic field, is provided with at least two teeth (5,5?) of soft magnetic material which each face a permanent magnet (4,4?) with a facing surface when the first part (1) is in an aligned position relative to the second part (2), the gap extending between the two teeth and the corresponding permanent magnets, wherein, when the first part is moving out of the aligned position relative to the second part along a longitudinal axis, the total area of the facingType: GrantFiled: July 5, 2006Date of Patent: October 8, 2013Assignee: Aktiebolaget SKFInventors: Johannes Jacobus Hubertus Paulides, Bernie G. Van Leeuwen, Elena Andreevna Lomonova, Lisette Vandenput-Geerdens
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Patent number: 8550779Abstract: An assembly for sealing an inlet into a to-be-sealed space, comprising the following features: at least one charging electrode that is connectable to one pole of a high voltage source is disposed in a first area of the inlet, an opposing electrode is disposed in a second area of the inlet that lies opposite of the first area, and the electrodes are disposed in a manner aligned with each other such that an influencing zone, which is formed between the electrodes, acts on influencible particles that penetrate from the outside in the direction towards the to-be-sealed space, such that these particles are accelerated in the direction away from the to-be-sealed space.Type: GrantFiled: October 7, 2008Date of Patent: October 8, 2013Assignee: Aktiebolaget SKFInventor: Hans-Joachim Vom Stein
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Publication number: 20130251298Abstract: A method for manufacturing a rolling-element bearing includes forming an inner ring from a steel having a sulfur content of 0.002 to 0.015 mass % and an oxygen content of less than 15 ppm, subjecting the inner ring to a hardening heat treatment that ends by performing a final heat treatment step at a predetermined temperature, cold working the inner-ring raceway to generate compressive residual stresses at least in a surface layer of the inner-ring raceway, subjecting the inner ring to a bluing treatment and subjecting the blued inner ring to a thermal post-treatment process at a temperature below the predetermined temperature of the final hardening heat treatment step. The resulting rolling-element bearing may exhibit compressive residual stresses having an absolute value of at least 200 MPa at 0.1 mm beneath the outer surface of the inner-ring raceway and a maximum value of 1500 MPa or less throughout the inner ring.Type: ApplicationFiled: November 15, 2012Publication date: September 26, 2013Applicant: AKTIEBOLAGET SKFInventors: Juergen Gegner, Wolfgang Nierlich, Armin Olschewski, Kenred Stadler, Arno Stubenrauch, Markus Volkmuth
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Patent number: 8540433Abstract: A bearing (4) includes an outer ring (6), rolling elements (5) and a two-part inner ring (A). The two-part inner ring (A) includes a first part (1) having a radially outer surface (11) and an inner bore (12). Furthermore, the two-part inner ring (A) includes a second part (2) having a radially inner surface (21) and at least one raceway (22) for rolling elements. The radially outer surface (11) of the first part (1) essentially matches the radially inner surface (21) of the second part (2). A cavity (3), which in use acts as a pressure chamber, is located between the first and second parts (1, 2). When pressurizing the cavity (3), a relative axial movement between the first and second parts (1, 2) is accomplished.Type: GrantFiled: August 29, 2008Date of Patent: September 24, 2013Assignee: Aktiebolaget SKFInventors: Hans Wendeberg, Håkan Leander
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Publication number: 20130243598Abstract: A bearing adjusts an angle of attack of a rotor blade of a wind turbine according and includes first and second bearing rings that are rotatable relative to each other. The first bearing ring includes, as a slider or translator of a linear motor, a plurality of magnetic field sources disposed adjacently around at least a part of its circumference. The magnetic field sources are disposed such that each two adjacently disposed magnetic field sources generate a magnetic field with alternating polarity. The second bearing ring includes, as a stator of the linear motor, a group of at least two coils disposed adjacently around at least part of its circumference. A wind turbine includes a rotor coupled to at least one rotor blade via such a bearing, which enables the angle of attack of the rotor blade to be adjusted during operation.Type: ApplicationFiled: September 14, 2012Publication date: September 19, 2013Applicant: AKTIEBOLAGET SKFInventors: Sebastian Ziegler, Bernie van Leeuwen, Armin Olschewski, Arno Stubenrauch, Alexander de Vries
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Publication number: 20130243358Abstract: A bearing cage (10) for a rolling-element bearing is split in the circumferential direction along at least one cutting line (11-1; 11-2) between a first and a second bearing cage section (12-1; 12-2). A projection (14) and a corresponding opening (15) are respectively formed on opposing bordering surfaces (13-1; 13-2) of the cutting line between the first and second bearing cage sections, and are configured to fix the bordering surfaces to each other in three directions upon meshing of the projection with the opening. A main axis (17-1; 17-2) of projection and opening extends at an angle (?) oblique to the rotational axis (16) of the bearing cage.Type: ApplicationFiled: September 11, 2012Publication date: September 19, 2013Applicant: AKTIEBOLAGET SKFInventors: Josef Stork, Bernd Eich
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Patent number: 8534917Abstract: A linear bearing assembly (the assembly) of the present invention is disposed in a housing of the assembly. A first rail and a second rail are movable relative to one another. A plurality of linear bearings are connected to the housing and disposed about the first and second rails. An actuator device is connected to at least one of the first rail and the second rail to selectively move the first rail and the second rail relative to one another and the housing in at least one of simultaneous and separate modes to redistribute lubricant in the linear bearings thereby preventing deformation of at least one of the first rail and the second rail.Type: GrantFiled: December 9, 2010Date of Patent: September 17, 2013Assignee: Aktiebolaget SKFInventors: Yefim Epshetsky, Mathew Peter Rosauer, Andrew Walter Helns, Lien Pham Stilfield
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Patent number: 8535009Abstract: A two-row tapered roller bearing includes an outer ring (1) having an outer diameter of at least one meter, a first inner ring (2) and a second inner ring (3) that is disposed axially adjacent the first inner ring (2). A first set of conically-formed roller bodies (4) roll between the outer ring (1) and the first inner ring (2) and a second set of conically-formed roller bodies (5) are disposed axially adjacent the first roller bodies (4) and roll between the outer ring (1) and the second inner ring (3). A first sealing ring (11) is disposed axially adjacent the outer ring (1), is connected with the outer ring (1) and slips on a slip surface (16) of the first inner ring (2) in a contacting manner.Type: GrantFiled: March 25, 2010Date of Patent: September 17, 2013Assignee: Aktiebolaget SKFInventor: Matthias Hofmann
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Patent number: 8534674Abstract: A unitized radial fluid seal includes a shell having a first elastomeric seal body affixed thereto and defining a primary seal lip. A sleeve includes a substantially cylindrical, axially-extending sealing flange and a protective flange extending substantially radially from the axially-extending sealing flange. A spring radially urges the primary seal lip into sealing contact with a sealing surface of the axially-extending sealing flange. A second elastomeric seal body is affixed to the sleeve and includes a resiliently-elastic angled lip extending from a terminal end of the axially-extending sealing flange opposite of the radially-extending protective flange. The sealing surface and an axially-outward facing surface of the angled lip define an angle (?) that is between about 130-170°. The primary seal lip is axially retained between the angled lip and the radially-extending protective flange.Type: GrantFiled: November 22, 2010Date of Patent: September 17, 2013Assignee: Aktiebolaget SKFInventors: Linas L. Maskaliunas, Bret Thomas Dana
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Patent number: 8534924Abstract: The invention relates to a wheel bearing unit (1) for a vehicle wheel, comprising a hub element (2, 3) which has a axially (a) extending cylindrical section (4) to be supported by a bearing arrangement (5) and which has a radially (r) extending flange section (6) for fixing the vehicle wheel and/or a brake disk at a face side (7) of the flange section (6). To ensure a simple design with high stability the invention is characterized in that the hub element (2, 3) consists of a first part (2) comprising the cylindrical section (4) and the flange section (6) and of a second part (3), wherein the second part (3) has means (8) for centering a wheel rim of the vehicle wheel and/or the brake disk and wherein the first part (2) and the second part (3) are connected by connection means (9).Type: GrantFiled: July 26, 2008Date of Patent: September 17, 2013Assignee: Aktiebolaget SKFInventors: Jacobus Zwarts, Cornelius Petrus Antonius Vissers, Laurens Verhulst, Jan Hendrikus Kapaan
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Patent number: 8534126Abstract: A sensor mounting cover is for a rolling-contact bearing and includes a transverse wall and an axial projection joined to the transverse wall and provided with a through-seat for housing a sensor. The sensor faces the bearing from a window defined by an inner edge of the seat and a closure element is associated with the axial projection and is arranged at least around the inner edge so as to close the window.Type: GrantFiled: October 20, 2010Date of Patent: September 17, 2013Assignee: Aktiebolaget SKFInventor: Andrea Serafini