Patents Assigned to Aktiebolaget SKF
  • Patent number: 10724995
    Abstract: A process for estimating the lubricant viscosity in a bearing comprises the steps of: monitoring acoustic emissions from the bearing with an acoustic emission sensor; monitoring the bearing for at least one of speed, load and temperature; demodulating the acoustic emission signal from the acoustic emission sensor; calculating the root mean square values of the demodulated acoustic emission signal and storing the calculated root mean square values; aligning the root mean square values with values of one or more of speed, load and temperature and storing the aligned values; using the aligned root mean square values, and at least one of speed, load and temperature in a model which calculates viscosity and/or viscosity ratio from the aligned values.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: July 28, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventor: Allan Thomson
  • Patent number: 10718240
    Abstract: The cam follower roller device provides a tappet body, a pin mounted into the tappet body, and a roller mounted on the pin and provided with an outer surface and with end faces, axially delimiting the outer surface. At least one lubricant supply through-hole is formed into the thickness of the tappet body and locally faces an edge of the roller delimited between the outer surface and one of the end faces.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: July 21, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventors: Benoit Hauvespre, Benoit Arnault, Nicolas Berruet, Guillaume Jouanno, Samuel Viault
  • Patent number: 10710851
    Abstract: A telescopic column includes at least two linearly movable telescopic elements and a drive system. The drive system includes a drive unit having a first clutch element and an output unit having a shaft, a windable connecting element and a second clutch element connected to the shaft such that the clutch element and the shaft rotate together. The drive system includes a brake unit configured to transmit a retaining force onto the second clutch element and configured such that applying a drive moment to the first clutch element reduces the retaining force and allow the telescopic elements to move relative to each other. The brake unit is further configured such that applying an output-side torque to the second clutch element increases the retaining force acting on the second clutch element.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: July 14, 2020
    Assignee: Aktiebolaget SKF
    Inventors: Dieter Jakober, Daniel Greilinger, Marcel Soltermann
  • Patent number: 10711836
    Abstract: A bearing assembly for supporting a screw-compressor rotor includes a shaft having a center of mass, at least one angular contact ball bearing mounted on the shaft, and at least one cylindrical roller bearing mounted on the shaft. A spacing from the angular contact ball bearing to the center of mass is shorter than a spacing from the cylindrical roller bearing to the center of mass.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: July 14, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventors: Thomas Grubbauer, Tom De Rooster
  • Patent number: 10710151
    Abstract: A seal cassette for a roll line in a continuous casting machine. The seal cassette configured to seal off a space from an outside environment and includes a first circumferential element and a second circumferential element arranged coaxially and rotatably movable relative each other. At least one third circumferential element is provided and is arranged coaxially relative the first and the second circumferential element and further arranged to be rotatably movable relative the second circumferential element. The first circumferential element is formed as a sleeve extending in an axial direction (A). The second circumferential element provides at least one circumferential seal portion arranged to seal between the second element and the first element. The at least one third circumferential element provides at least one circumferential seal portion to seal between the third element and the second element and further provides a circumferential seal portion that seals against the first element.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: July 14, 2020
    Assignee: Aktiebolaget SKF
    Inventors: Hans-Joachim vom Stein, Erik Mitchell
  • Patent number: 10704990
    Abstract: A sensor module configured to detect a vibration of a mechanical component includes a base connectable to the mechanical component, at least one spacer extending from the base, and a circuit board connected to the base by the spacer such that a mechanical vibration is transmitted from the component to the base to the spacer to the circuit board. The circuit board includes a circuit and wirelessly transmits signals indicative of a detected vibration. The spacer includes a body portion and a pin portion projecting from an end of the body portion. The pin portion extends into the at least one hole, and the body portion is blocked from passing though the at least one hole by contact with a region of a first side of the circuit board surrounding the at least one hole.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: July 7, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventors: Olivier Cheve, Johannes Biegner, Jens Graf, Simon Hubert
  • Patent number: 10702901
    Abstract: A guide roller configured to guide a wire to or from a work roller in a wire rolling line includes a rolling-element bearing having a rotatable outer ring, a fixed inner ring, and rolling elements between the outer ring and the inner ring. The outer ring has a profile configured to guide the wire on a radially outer surface thereof. The guide roller is configured as a double row preloaded rolling-element bearing and is installable as a finished component on a fixed shaft of the wire rolling line without adjusting the preload.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: July 7, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventors: Henning Kern, Benjamin Michael
  • Patent number: 10704596
    Abstract: A toroidal roller bearing that provides an inner ring, an outer ring and a plurality of roller elements interposed in-between the inner and outer rings such that the rings rotate relative each other in relation to a rotational axle. The bearing is configured such that the inner ring and the outer ring are capable of being axially displaced and angularly misaligned relative each other in relation to the rotational axle. At least one of the inner or outer ring provides a recess in an axially extending section extending from one of its axial ends. The recess is arranged such that an axial gripping force can be generated onto the ring. In addition, the present disclosure provides a bearing arrangement that includes the bearing.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: July 7, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventors: Linus Efraimsson, Prakash Gowdra Leelachandrappa, Kishor Powar, Gajula Balija Ranga, Lars Stigsjöö, Vijay Tijare
  • Patent number: 10704601
    Abstract: A bearing assembly includes first and second rolling-element bearings each having first and second bearing rings, a raceway and a flange element at both ends of the raceways. Two of the flange elements are formed on a common flange body, and the flange body is axially pressed onto cylindrical mounting surfaces of the first bearing rings of the first and second rolling-element bearings and held in place by a press fit.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: July 7, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventors: Jesko-Henning Tanke, Steffen Sendner, Sven Simon, Johannes Ullmann
  • Patent number: 10708981
    Abstract: An induction heating device providing a support plate with an upper surface for receiving a side face of a bearing. A plurality of concentrically arranged induction coils provided at an underside of the support plate, and connected to and selectively powered by a generator. Temperature sensors arranged on the upper surface of the support plate at different radial distances from a center axis of the concentric coils. A control unit receives and monitors a temperature signal from each of the temperature sensors, which receives and processes a signal indicative of a load on each coil, when selectively powered, to identify a first coil that is electromagnetically coupled to an inner ring and a second coil that is electromagnetically coupled to an outer ring. The control unit configured to select a first and a second temperature sensor associated with the first and second coils respectively, and to execute a heating cycle.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: July 7, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventors: Alberto Javier Herrera Caballero, Ton Ramaker
  • Patent number: 10697835
    Abstract: A method for assembling sensor on a housing. The sensor provided with a body, a protrusion and an electrical connection cable. The housing being provided with a blind hole shaped to engage with the protrusion of the sensor. The assembly method provides the following phases: a) inserting the protrusion in the blind hole of the housing bringing an end wall of the protrusion into contact with a bottom wall of the blind hole, b) tightening a bushing to a first tightening torque value, the bushing having an external thread that engages with an internal thread of the blind hole and an internal thread that engages with an external thread of the protrusion, in which all of the threads have the same pitch, c) tightening a hexagonal nut to a second tightening torque value.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: June 30, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventor: Fabrizio Sozzi
  • Patent number: 10695843
    Abstract: A system includes a component to be machined, the component having a plastic base body having an outer diameter and a longitudinal axis and at least one clamping auxiliary structure, and a clamping element configured to clamp the component using the clamping auxiliary structure. The clamping element includes at least one clamping jaw having at least one counter-clamping auxiliary structure that is configured to engage the clamping auxiliary structure and to fix the component in an interference-fit manner in the axial direction with respect to the clamping element. Also a machining method using the system.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: June 30, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventors: Erich Pfandl, Johann Moitzi
  • Patent number: 10697322
    Abstract: A turbocharger having a rotatable shaft, a stationary housing, a turbine wheel mounted on one end of shaft, a compressor wheel mounted onto an opposite end of shaft, and at least one rolling bearing disposed between the shaft and the housing. The rolling bearing includes a stationary outer ring fixed to the housing, a rotatable inner ring fixed to the shaft, at least one row of balls disposed in a rolling chamber defined between the outer ring and inner ring, and an annular non-deformable cage providing circumferentially a plurality of through holes forming pockets where the balls are housed. The pockets being axially delimited between annular cage heels. Each pocket of cage is extended by a slot through one of cage heels, the cage heel provided with the slots being axially oriented towards the interior side of turbocharger.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: June 30, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventors: Benoît Hauvespre, Charles Chambonneau, Nicolas Tronquoy
  • Patent number: 10697546
    Abstract: The present invention provides a dynamic seal for enclosing a radial gap between coaxial, relatively rotatable inner and outer members. The dynamic seal includes an inner seal part, mountable to the inner member; an outer seal part, mountable to the outer member; and a counterface part radially suspended between the inner and outer seal parts and coaxial therewith. Each of the inner and outer seal parts provides a set of first and second sealing elements, which bear against oppositely oriented axial surfaces of the counterface part. The counterface part is thus axially retained in both directions by the inner seal part at a radially inner contact location, and is axially retained in both directions by the outer seal part at a radially outer contact location.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: June 30, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventors: Gerrit-Jan Dop, Jos Holsnijders
  • Patent number: 10697037
    Abstract: An inductor for an induction hardening system includes a heating element for heating a heating zone of a workpiece, and the heating element includes a first induction coil and a second induction coil and a gas escape device disposed between the first induction coil and the second induction coil. The gas escape device is configured to substantially prevent a liquid from a quenching device from reaching the heating zone while the heating zone is being heated by the first and second inductors.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: June 30, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventor: Gerhard Wagner
  • Patent number: 10697855
    Abstract: A method for state monitoring a bearing that supports a planetary gear of a planetary transmission on a planet carrier, the method including measuring a structure-borne noise of the planetary transmission at a stationary position on the planetary transmission in order to generate a digital measurement signal having a sample value at at least one sample time point, determining a relative speed of the planetary gear with respect to the stationary position for the sampling time point, determining a corrected measurement signal, the corrected measurement signal including the sample value with a corrected sample time point, the corrected sample time point being shifted with respect to the sample time point based on the relative speed, forming an envelope-curve signal based on the corrected measurement signal, determining a frequency spectrum for the envelope-curve signal, and comparing the frequency spectrum with a reference spectrum in a given frequency range.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: June 30, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventor: Tobias Roepke
  • Patent number: 10698193
    Abstract: A telescopic column includes a first telescopic element and a second telescopic element moveable linearly with respect to one another, at least one drive unit connected to the first telescopic element, at least one connecting element configured to transmit a force from the drive unit to the second telescopic element, a monitoring unit configured to detect an operating parameter of the connecting element, and a switch configured to send a signal to the monitoring unit in response to the detected operating parameter being outside a predetermined range.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: June 30, 2020
    Assignee: Aktiebolaget SKF
    Inventors: Dieter Jakober, Daniel Greilinger, Marcel Soltermann
  • Patent number: 10690182
    Abstract: A roller bearing having a rotatable first ring and a non-rotatable second ring arranged concentrically, the first ring having a circumferential groove opening towards the non-rotatable second ring into which is arranged a protruding element, between which are arranged a single radial roller bearing and two axial roller bearings spaced apart in the axial direction respectively on opposite radial faces of the protruding element. The roller bearing includes a plurality of circumferentially spaced apart cam followers secured to the rotatable first ring.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: June 23, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventor: Denis Catalano
  • Patent number: 10690188
    Abstract: A flexible cage of a rolling bearing belonging to a wheel hub assembly for motor vehicles, having a substantially circular rib and a plurality of fingers which extend from a side of the rib and have a base portion, the rib and the fingers having partially spherical concave surfaces defining together a plurality of partially spherical cavities for retaining respective rolling bodies. The rib has substantially straight portions, each of them integrally connected to a base portion of a finger, substantially oblique portions and protrusion portions.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: June 23, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventor: Maurizio Bertola
  • Patent number: 10683896
    Abstract: A bearing cage includes a circumferential ring element and an axial bridge that meet in a connection region, and the connection region includes a recess formed such that a thickness of the ring element in the connection region is less than a thickness of the ring element outside the connection region and such that a thickness of the bridge in the connection region is not less than a thickness of the bridge outside the connection region.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: June 16, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventor: Roland Harich