Patents Assigned to SKF
  • DEVICE FOR SUPPLYING LUBRICANT TO A LUBRICATION POINT IN A MACHINE
    Publication number: 20170241307
    Abstract: A device for supplying lubricant to a lubrication point in a machine, a tunnel boring machine, for example, includes a lubrication pump unit and a control unit. The lubrication pump unit is configured to supply a quantity of the lubricant to the lubrication point, and the control unit is configured to regulate the quantity of lubricant based on a sensor measurement signal. The sensor measurement signal may be based on a temperature measured in a region of the lubrication point, a pressure measured in a region of the lubrication point, a measured viscosity of the lubricant, a measured dielectricity of the lubricant, a measured water content of the lubricant, a vibration intensity measured at a part of the machine, or a measured rotational speed of a part of the machine.
    Type: Application
    Filed: February 27, 2014
    Publication date: August 24, 2017
    Applicant: SKF Lubrication Systems Germany AG
    Inventors: Andreas Borek, Juergen Kreutzkaemper, Sefan Frank, Stefan Schuermann
  • Rolling-element bearing including seal unit
    Patent number: 9739313
    Abstract: A rolling-element bearing includes a first bearing ring, a second bearing ring, and a seal unit formed in a multiple-piece manner, the seal unit including an at least part-ring shaped main element which is freely rotatable with respect to the first bearing ring and the second bearing ring and at least one seal lip. In addition, the main element and the seal lip are exchangeably connectable to each other.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: August 22, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventors: Femke Back, Jens Bettenhausen, Steffen Hain, Matthias Hofmann, Henning Kern, Jochen Lorenscheit, Christina Pfeuffer, Edgar Pickel, Werner Schleyer, Mathias Seuberling
  • Heat-treatment of an alloy for a bearing component
    Patent number: 9732408
    Abstract: A method for preparing titanium alloy that is created to be formed into a bearing component, wherein the titanium alloy comprises from 5 to 7 wt % Al, from 3.5 to 4.5 wt % V, from 0.5 to 1.5 wt % Mo, from 2.5 to 4.5 wt % Fe, from 2.5 to 4.5 wt % Fe, and from 0.05 to 2 wt % Cr. The alloy can optionally include one or more of the following elements: up to 2.5 wt % Zr, up to 2.5 wt % Sn, and up to 0.5 wt % C. The balance of the composition comprises Ti together with unavoidable impurities. The alloy is heated to a temperature T below the (?+?/?)-transition temperature T? and then quenched. The alloy is then aged a temperature of from 400 to 600° C.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: August 15, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventors: Alejandro Sanz, Alexander Vries De
  • Fill level measurement system
    Patent number: 9733116
    Abstract: A fill-level measurement apparatus for measuring a fill level of a fluid in a container includes a housing having a first end and a second end and first and second substantially identical thin capacitive sensors mounted on a carrier plate in the housing. The carrier plate includes a circuit board and a microcontroller is mounted on the circuit board. The first sensor is mounted in the housing at a first distance from the first end with a surface portion in contact with a first inner wall portion of the housing, and the second sensor is mounted in the housing between the first sensor and the second end of the housing with a clearance of 0.5 to 10 centimeters from a second inner wall portion of the housing, and the first sensor and the second sensor are configured to communicate with the microcontroller.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: August 15, 2017
    Assignee: SKF LUBRICATION SYSTEMS GERMANY GMBh
    Inventors: Peter Hoppe, Juergen Kreutzkaemper, Holger Schmidt
  • Method for manufacturing and assembling a rolling-element bearing assembly with a spacer
    Patent number: 9732801
    Abstract: A method for manufacturing a rolling-element bearing assembly includes providing a first bearing ring, a second bearing ring and rolling-elements, rotating the first bearing ring relative to the second bearing ring and joining the first bearing ring, the second bearing ring and the rolling elements while the first bearing ring is rotating relative to the second bearing ring. The method additionally includes connecting one of the bearing rings to a bearing ring of another rolling-element bearing or to a spacer while the first bearing ring is rotating relative to the second bearing ring.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: August 15, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventors: Rico Dittmar, Christian Knoche, Achim Mueller, Thomas Will
  • Component of a rolling-element bearing and method for manufacturing a component of a rolling-element bearing
    Patent number: 9732792
    Abstract: A component of a rolling-element bearing, such as a bearing inner ring having an inner ring flange, a bearing outer ring having an outer ring flange or a rolling element having an end surface, includes a solid slide layer having a lower coefficient of friction than a material to which the slide layer is attached which slide layer reduces frictional contact between the component and another component against which the slide layer slides during bearing operation.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: August 15, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventor: Thomas Krause
  • Bearing arrangement
    Patent number: 9732797
    Abstract: A wheel bearing arrangement for a vehicle, comprising at least one roller bearing, wherein at least one of the roller bearings is a ball bearing, which includes an inner ring and an outer ring, wherein both rings have raceways for balls being located between the rings. To ensure a sufficient lifetime of the roller bearings and to minimize the friction in the bearing, the at least one of the rings of the bearing arrangement is made from a ball bearing steel produced by a powder metallurgical process using a powder metallurgy component including 0.5 to 2.0 weight-% C, a maximum of 0.035 weight-% S, 3.0 to 5.0 weight-% Cr, 1.0 to 4.0 weight-% V, 1.0 to 12.0 weight-% W and 2.0 to 12.0 weight-% Mo, wherein at least one raceway has a radius and the balls have a diameter which fulfills the equation: radius/diameter>0.53.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: August 15, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventors: Jeroen Wensing, Ian Peverill, Paul Meaney
  • Sensor unit and bearing including the same
    Patent number: 9733154
    Abstract: A sensor unit for a bearing including at least one inner ring and at least one outer ring, wherein the sensor unit is configured to detect at least one state variable of the bearing. The sensor unit is embedded in a recess of one of the inner ring or the outer ring.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: August 15, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventors: Andrew Campbell, Allan Thomson, Joseph Erskine
  • Actuator
    Patent number: 9735657
    Abstract: An actuator includes two abutment elements and an adjusting device for changing their spacing in a translational displacement direction. A support element is provided between the abutment elements, a drive motor is supported by the support element, a first spindle nut is rotatably supported by the support element, a second spindle nut is rotatably supported by the support element, a first spindle engages the first spindle nut and is connected to one abutment element, and a second spindle engages the second spindle nut and is connected to the other abutment element. Two limit switches are mounted on a switch support on the support element and spaced apart from each other in the translational displacement direction. A first limit switch actuating element is attached to one of the abutment elements, and a second limit switch actuating element is attached to one of the spindles.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: August 15, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventors: David S Meyer, Patrick Uhri, Stefan Waldner
  • Bearing and bearing arrangement
    Patent number: 9732793
    Abstract: A spherical roller bearing having an outer ring providing at least one inner raceway, an inner ring providing a first and a second outer raceway, a plurality of roller elements arranged in a first and second roller row in-between the at least one inner raceway and the respective first and second outer raceway is provided. The bearing provides a cage for guiding the roller elements in the first and second roller row, the cage includes a plurality of cage pockets, wherein in each cage pocket one of the roller elements is disposed. The bearing further presents a specific pitch circle diameter (PCD), and the cage is essentially in-pitch roller centered in relation to the pitch circle diameter (PCD) when there is an axial force acting on the bearing. In addition, the present invention regards a bearing arrangement and a wind turbine bearing arrangement.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: August 15, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventors: Marcus Loof, Peter James, Lars Stigsjöö
  • Cam follower roller device, notably for a fuel injection pump
    Patent number: 9726270
    Abstract: A cam follower roller device, notably for fuel injection pump of an internal combustion engine, the cam follower roller device comprising a casing, a shaft mounted on the casing and a roller rotatably mounted on the shaft. The casing comprises on its periphery at least four openings made through the thickness of the casing and located in such a way that two openings face one end of the outer cylindrical surface of the roller.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: August 8, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventors: Nicolas Berruet, François Champalou, Benoît Hauvespre, Samuel Viault
  • Seal with connecting insert
    Patent number: 9719598
    Abstract: A seal including a generally annular casing, a generally annular sealing element that is configured to seal with a relatively movable member, and an insert coupled with the sealing element and the casing. The insert substantially maintains a relative position of at least a portion of the casing and at least a portion of the sealing element.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: August 1, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventor: Michael Thomas
  • BEARING UNIT FOR AN AXLEBOX OF A RAILWAY VEHICLE, AXLEBOX, RAILWAY VEHICLE AND MAINTENANCE PROCESS
    Publication number: 20170203773
    Abstract: The invention concerns a bearing unit (10), for an axlebox (1) of a railway vehicle, the bearing unit (10) being centered on a central axis (X10) and comprising a bearing (20) configured to support an axle (6) of a wheelset. The bearing unit (20) also comprises an annular sleeve (30) provided with an outer periphery configured for mounting in an annular bore of a housing (2) of the axlebox (1) and an inner periphery configured for receiving the bearing (20); and a plurality of anti-rotation means (422) distributed at the outer periphery of the annular sleeve (30), for preventing rotation of the annular sleeve (30) in the housing (2) of the axlebox (1). The invention also concerns an axlebox (1) comprising such a bearing unit (10), a railway vehicle comprising such an axlebox (1) and a maintenance process for such an axlebox (1).
    Type: Application
    Filed: July 17, 2014
    Publication date: July 20, 2017
    Applicant: Aktiebolaget SKF
    Inventors: Xavier Blanchard, Thierry Le Moigne
  • Cage for a rolling bearing, notably for a motor vehicle electric power steering bearing
    Patent number: 9709096
    Abstract: A cage for a rolling bearing, wherein the cage is intended to ensure the circumferential spacing of a row of rolling elements. The cage comprises pockets for the rolling elements and connecting portions, each connecting portion connecting two successive pockets. At least one of the connecting portions is elastically deformable at least in a circumferential direction so as to allow the two associated pockets to move relative to one another in the circumferential direction.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: July 18, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventors: Laurent Varnoux, Thierry Adane, Thomas Perrotin
  • Pulley device for chain or belt
    Patent number: 9709154
    Abstract: A pulley assembly comprising an inner ring, an outer ring, at least one row of rolling elements between the inner and outer rings, a pulley rotationally secured with the outer ring, having an outer radial surface for engagement with a chain or belt, a screw comprising a head and a stem radially housed inside the inner ring and having an outer peripheral groove, a mounting support element having a receiving bore or housing for receiving the screw head and an axial retaining member retaining the screw stem within the receiving housing, the member being engaged in the outer groove of the screw stem. The mounting support element includes a cavity that emerges in the receiving bore. When the screw is installed within the receiving bore, the outer groove is axially across from the mounting support element cavity and the axial retaining element is engaged in the mounting support element cavity.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: July 18, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventors: Dirk Albrecht, Romuald Lescorail, Frederic Liege, Nicolas Tronquoy
  • Sealing assembly
    Patent number: 9709173
    Abstract: A radial-shaft sealing assembly includes a sealing lip disposed on a support ring. A cylindrical portion of the sealing lip that abuts on a rotatable shaft contains an elastomeric material and has a profiling for pumping oil or lubricant back to an oil side of the sealing assembly. The profiling includes first and second annular ridges disposed in parallel, and first and second groups of radially-projecting pumping elements disposed therebetween and distributed around the circumference of the cylindrical portion. Each pumping element extending at an angle (?) to the circumferential direction (U) of the cylindrical portion, but the first group of pumping elements has an opposite orientation to the second group of pumping elements.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: July 18, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventor: Juergen Kurth
  • Roller screw, mounting method and tool for fitting rollers in such a roller screw
    Patent number: 9709140
    Abstract: A roller screw mechanism comprising a screw having an outer threading; a nut arranged around and coaxially to the screw, the nut having an inner threading; and a plurality of mutually identical rollers interposed between the screw and the nut. Each mutually identical roller having an outer threading engaged with the outer and inner threadings of the screw and of the nut. The threading of each mutually identical roller being prolonged axially at each end by teeth respectively engaged with teeth of two annular crown rings fixed in an unthreaded part of the bore of the nut. Each of the mutually identical rollers comprises an angular visual positioning feature. The nut comprises an angular visual positioning feature making it possible to angularly place the rollers in the crown ring.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: July 18, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventors: Christophe Magnin, David Richardet
  • Combination spherical and laminated bearing assembly
    Patent number: 9709089
    Abstract: A bearing assembly for coupling first and second members includes a housing coupled with, or integrally formed with the first member, a laminated bearing section and a spherical bearing section, each section disposed within a housing bore. The laminated bearing section is configured such that at least a portion of the laminated bearing section flexes when torque on the first and second members is less than a predetermined value. The spherical bearing section is configured such that a spherical bearing inner member slidably displaces within a spherical bearing outer member when torque on the first and second members is at least the predetermined value.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: July 18, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventor: Anthony Carl Bohm
  • ROLLING-ELEMENT BEARING
    Publication number: 20170198752
    Abstract: A rolling bearing includes an inner ring, an outer ring, a plurality of rolling elements disposed between the inner ring and the outer ring, and a plurality of cage segments separating circumferentially adjacent ones of the plurality of rolling elements. Each of the cage segments has an axial bridge portion and side plates at axially opposite ends of the bridge portion, each of the side plates having a convex end and a concave end circumferentially spaced from the convex end. The convex end of a first one of the side plates contacts the concave end of a second one of the side plates.
    Type: Application
    Filed: April 24, 2015
    Publication date: July 13, 2017
    Applicant: Aktiebolaget SKF
    Inventors: Sabine Hofmann, Baozhu Liang
  • Plain bearing
    Patent number: 9702406
    Abstract: A bearing comprising: (a) an inner ring, (b) an outer ring, and (c) a bearing liner disposed therebetween, wherein the bearing liner comprises a resin having a glass transition temperature of less than 150° C.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: July 11, 2017
    Assignees: SKF AEROSPACE FRANCE S.A.S., AKTIEBOLAGET SKF
    Inventors: Andrew Bell, Michael Colton, Camille Dayot, Noemie PEron