Patents Assigned to SKF
  • Bearing arrangement for medical device
    Patent number: 7429134
    Abstract: A bearing arrangement used in a medical device in which a rotating component is supported relative to a stationary housing includes a bearing comprising an inner ring and an outer ring, with the inner ring being connected to the component which is to be supported and the outer ring being connected to the housing. To increase quiet running of the rotating component, the connection between the inner ring and the component to be supported and/or between the outer ring and the housing is produced by an annular element which is made of plastic.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: September 30, 2008
    Assignee: AB SKF
    Inventors: Manfred Brandenstein, Heinz Breunig, Jurgen Neder, Gunter Neder, Armin Olschewski
  • Instrumented antifriction bearing and electrical motor equipped therewith
    Patent number: 7429133
    Abstract: An instrumented ball-bearing includes a rotating part, a non-rotating part, and an assembly for detecting rotation parameters. The assembly for detecting rotation parameters includes an encoder and a sensor. The sensor is integrated with the non-rotating part. The sensor includes a sensor unit and at least a microcoil. The microcoil has a substantially planar winding. The microcoil is positioned in the sensor unit of the non-rotating part such that the microcoil is positioned axially opposite the encoder.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: September 30, 2008
    Assignee: Aktiebolaget SKF
    Inventors: Samuel Gallion, Franck Lauferon
  • Composite drain plug
    Patent number: 7427181
    Abstract: A composite drain plug for an automobile engine. The drain plug is made up of a hollow metal sleeve that is flanged at one end and closed at the other end. There is a core portion filling the hollow sleeve and having a head portion and a stub flange adjacent the flanged end of the sleeve. A circumferential sealing bead is bonded to the stub flange. The core portion is a glass-filled polymer and the sealing bead is made from a material which includes a cross-linked elastomer dispersed in a thermoplastic carrier.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: September 23, 2008
    Assignee: SKF USA Inc.
    Inventors: Dennis Nelson Denton, Thomas Sochacki
  • AIR DRYER SYSTEMS
    Publication number: 20080216661
    Abstract: An air drying system using plural air drying units. The system includes moist air and dry air plenums and a pair of substantially identical air drying canisters. Each unit has a single lower bases and a single, flanged mounting bracket. The moist air plenum is connected to an air inlet in the lower base, and the dry air plenum is connected to a dry air outlet in the lower base.
    Type: Application
    Filed: March 9, 2007
    Publication date: September 11, 2008
    Applicant: SKF USA INC.
    Inventors: Thomas John Mahoney, Monte Salzman
  • Annular sealing assembly for insertion between two mechanical members in relative motion, in particular a linear reciprocating motion, as a rod and the relative guiding seat of a mono-tube shock-adsorber
    Publication number: 20080221839
    Abstract: A method of improving a 2D or 3D multiblock-structured mesh of an object that moves through a fluid medium, such as an aircraft, which is used in the design of said object in connection with a defined analytical scheme, said mesh having being generated with rectangular (2D) or hexahedral (3D) blocks under constrains that may cause that the mesh include irregular blocks (31) comprising the following steps: finding irregular blocks (31) in the mesh; degenerating said irregular blocks (31) merging contiguous edges or sides (33, 35) in one edge or side (37) so that triangular (2D) or pentahedral (3D) blocks (41) are formed and extending the modifications all along the blocks that are propagated; generating several rectangular (2D) or hexahedral (3D) regular blocks (43, 45, 47) inside said triangular (2D) or pentahedral (3D) blocks (41). The invention also refers to a system for carrying out said method.
    Type: Application
    Filed: December 26, 2007
    Publication date: September 11, 2008
    Applicant: AKTIEBOLAGET SKF
    Inventor: Roberto Pasino
  • Module for a fuel cell arrangement comprising plates joined by a seal
    Patent number: 7419738
    Abstract: A module for a fuel cell arrangement having several stacked plates. At least two of the plates have a common seal element of polymer material which is injected onto the plates and by which the plates are at least partially joined to one another. The plates can be provided with openings into which the seal element extends. The plates can be configured so that a cavity is defined between the plates, with the openings communicating with the cavity. The seal element can also have different cross-sectional configurations.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: September 2, 2008
    Assignee: AB SKF
    Inventors: Karl-Heinz Maus, Werner Heinl, Hans-Joachim vom Stein
  • Oil separator
    Patent number: 7415953
    Abstract: In an oil separator for separating oil from a fluid flow with a labyrinth-like flow guide which is formed essentially by baffle walls, at least one of the baffle walls in at least one partial area can be deformed in a manner similar to rubber.
    Type: Grant
    Filed: March 2, 2005
    Date of Patent: August 26, 2008
    Assignee: AB SKF
    Inventors: Hans-Joachim vom Stein, Marcel Op de Laak
  • Strut for a vehicle
    Patent number: 7413202
    Abstract: Strut for a vehicle which is interposed between a suspension and a semi-axis of the vehicle, and which is provided with a central body, and a passing housing which is obtained through the central body along a longitudinal axis (A) in order to house a rolling contact bearing which is interposed between the strut itself and the semi-axis; a coupling device being foreseen between the rolling contact bearing and the passing housing, and being defined by two connecting outlines which are obtained around the rolling contact bearing and, respectively, inside the passing housing with a shape which is complementary in relation to each other, and presenting a radius (R) of angularly variable dimensions with continuity on a plane which is transverse to the longitudinal axis (A), and at least one respective convex portion in relation to the longitudinal axis (A).
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: August 19, 2008
    Assignees: Aktiebolaget SKF, Minganti International Ltd
    Inventors: Jean-Gérard Loustanau, Domenico Ducci, Marcus Caldana
  • Hub-bearing assembly allowing pressurized air to be supplied to the tyre of a vehicle wheel
    Publication number: 20080190535
    Abstract: A hub-bearing unit has a rotatable hub fixable to the wheel of the vehicle and a stationary bearing race fixable to the vehicle for rotatably supporting the hub about an axis. An air cavity is formed in the hub with a radial passage for letting pressurized air into the cavity and an outlet for conveying pressurized air from this cavity to the tyre. The assembly includes a cam integral with the stationary race and cooperating with a piston accommodated in the radial passage. Rotation of the hub causes the piston to reciprocate along the passage and let pressurized air into the cavity.
    Type: Application
    Filed: July 9, 2007
    Publication date: August 14, 2008
    Applicant: Aktiebolaget SKF
    Inventor: Cristian Concu
  • Process for Heat Treatment of Steel or Cast Iron Workpieces
    Publication number: 20080190522
    Abstract: A method for the heat treatment of workpieces made of steel or cast iron involves quenching the workpiece to a temperature above the martensite starting temperature (i.e., the temperature below which martensite is formed) after a holding period at or above the austenitizing temperature. In the ensuing time period, austenite is transformed into bainite. The temperature of the workpiece is reduced during the time period when transformation occurs and the transformation of austenite into bainite is thus continued.
    Type: Application
    Filed: July 30, 2005
    Publication date: August 14, 2008
    Applicant: AB SKF
    Inventors: Johann Volkmuth, Martin Goebel
  • Pressure compensating device for a bearing housing
    Patent number: 7410302
    Abstract: The invention refers to a pressure compensating device (4) for a bearing housing, which is incorporating a sealed off compartment, and which device is intended to compensate pressure variations in the sealed off compartment, wherein the device (4) incorporates a housing (5, 6, 7), in which is positioned a bellows (9) of flexible material, which housing (4) has at least one first opening (10) through which the interior of the bellows (4) communicates with the side of the bearing housing where a varying pressure can be expected, and wherein the bellows (4) further is associated with an additional opening (8), adapted to allow the bellows (4) to alter its momentary form for compensating such pressure variations.
    Type: Grant
    Filed: August 25, 2005
    Date of Patent: August 12, 2008
    Assignee: Aktiebolaget SKF
    Inventors: Bjorn Pettersson, Filip Rosengren
  • Device For Assembling and Disassembling a Sensor in a Bearing Unit
    Publication number: 20080178448
    Abstract: A rotation sensor (19) is used for detecting relative rotation between a rotatable member (11, 12) and a non-rotatable member (10) of a bearing unit. The sensor (19) is retained in a sensor carrier body (18) of plastic material and annular shape. An annular supporting insert (17) serves to mount the sensor carrier body (18) onto the non-rotatable member (10) with the sensor operatively facing an impulse ring (15) secured to a rotatable member (12) of the unit. The sensor carrier body (18) and the supporting insert (17) provide a lock and seats (18a, 18c, 18d, 18m, 18n; 17c, 17d, 17m, 17n) for releasably locking the sensor carrier body (18) to the supporting insert (17).
    Type: Application
    Filed: May 15, 2006
    Publication date: July 31, 2008
    Applicant: AKTIEBOLAGET SKF
    Inventors: Raffaele Montagnoni, Andrea Serafini
  • AXIAL COUPLING OF A CONSTANT VELOCITY JOINT TO A HUB BEARING UNIT OF A MOTOR VEHICLE WHEEL
    Publication number: 20080182674
    Abstract: A constant velocity joint has an outer bell telescopically coupled for rotation with a rotatable hub of a hub bearing unit so as to provide torque transmission thereto. The joint bell is releasably axially coupled to a rotatable member of the hub bearing unit by an annular connector. The connector includes a radially inwardly extending annular flange axially clamped against a rigid annular part fixed to or integral with the hub, and a radially outer portion extending axially around a cylindrical surface of the joint bell. This outer portion has a resiliently radially expansible section with one or more radially inwardly extending protrusions providing a snap connection with a relief or recess formed on the cylindrical outer surface of the joint.
    Type: Application
    Filed: December 12, 2007
    Publication date: July 31, 2008
    Applicant: Aktiebolaget SKF
    Inventors: Marco Brunetti, Cristian Concu
  • SEALING ARRANGEMENT BETWEEN A CONSTANT VELOCITY JOINT AND A HUB BEARING UNIT OF A MOTOR VEHICLE WHEEL
    Publication number: 20080174112
    Abstract: One end of a resilient sleeve is fitted on a tubular projection of the bell of a constant velocity joint. The sleeve covers a radial slot formed in the projections and the arms of a spring locking ring for axially removably securing the joint bell to a toothed driving ring fixed on a rotatable hub. The other end of the sleeve has a radially inwardly projecting flange which is sealingly axially clamped against a rigid annular part secured to or integral with the hub.
    Type: Application
    Filed: January 2, 2008
    Publication date: July 24, 2008
    Applicant: Aktiebolaget Skf
    Inventors: Marco BRUNETTI, Cristian CONCU
  • Method and a device for effecting automatic centering of an annular workpiece on a rotating surface
    Publication number: 20080164663
    Abstract: A method and device for effecting automatic centering of an annular workpiece on a rotating surface having a rotational center involves arbitrarily positioning the workpiece on the slowly rotating surface, applying a support for the workpiece by way of spaced apart contact members that individually contact the workpiece and are synchronously movable in a guided reciprocating manner towards and away from the rotational center of the rotating surface. The contact members are gradually retracted away from the rotational center of the rotating surface until the workpiece is unaffected by the contact members during one revolution of the rotating surface so that the workpiece is centered, and the center of the workpiece coincides with the rotational center of the rotating surface. At least one of the contact members is provided with a mechanism for counteracting a friction force acting on the workpiece.
    Type: Application
    Filed: January 4, 2008
    Publication date: July 10, 2008
    Applicant: Aktiebolaget SKF
    Inventors: Peter Calas, Jacek Kaminski, Hakan Bastedt, Stefan Hognas
  • METHOD FOR MACHINING ELEMENTS WITH NON-CIRCULAR CROSS SECTION, IN PARTICULAR FOR AXIAL COUPLINGS FOR MECHANICAL CONNECTION, AND COUPLING MADE APPLYING SAID METHOD
    Publication number: 20080159808
    Abstract: Described herein is an apparatus for machining elements for axial couplings for mechanical connection, with non-circular cross section, which comprises: a work spindle (1) fitted on the shaft (103) of appropriate means (3) for actuation in rotation; a tool (7) guided by appropriate means (5, 6) in the displacements both along the axis perpendicular to that of rotation of the spindle and along the axis parallel to that of rotation of the spindle; means (105, 106) for actuation of the displacements of said tool on said guide means (5, 6); and a central control unit (4) connected to said displacement means (105, 106) of said tool and to said means for actuation in rotation (3) of said spindle (1), capable, via an appropriate program, of supervising turning of the side coupling surface of said elements for axial couplings for angular connection.
    Type: Application
    Filed: December 3, 2007
    Publication date: July 3, 2008
    Applicants: AKTIEBOLAGET SKF, MINGANTI INTERNATIONAL LTD
    Inventors: Jean-Gerard Loustanau, Marcus Caldana
  • Method and sensor arrangement for load measurement on rolling element bearing based on model deformation
    Patent number: 7389701
    Abstract: Method and sensor arrangement for determining a load vector acting on a rolling element bearing (1) in operation. A plurality of N sensors (8) are provided which measure displacement and/or strain for determining displacement and/or strain in one of the elements (5, 6, 7) of the rolling element bearing (1). Furthermore, a mode shape coefficients calculator (11) is provided, connected to the plurality of N sensors (8), for determining a deformation of the element (5, 6, 7) by calculating amplitude and phase of N/2 Fourier terms representing at least one radial mode shape of the ring shape element (5, 6, 7). Also, a bearing neural network (12) is present, connected to the mode shape coefficients calculator (11), the bearing neural network (12) being trained to provide the load vector on the rolling element bearing (1) from the N/2 Fourier terms.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: June 24, 2008
    Assignee: AB SKF
    Inventor: Hendrik Anne Mol
  • Method for treating the surface of a machine element
    Patent number: 7389666
    Abstract: A method for treating the surface of a machine element, such as the raceway and/or a rolling element of a rolling element bearing, comprising the steps of—subjecting the surface to a hard turning operation so as to obtain a specific roughness profile having a series of alternating ridges and grooves, —after the hard turning operation subjecting the surface to a ball calendering operation so as to flatten the ridges of the roughness profile whereby a ?q value smaller than 5° is obtained.
    Type: Grant
    Filed: May 5, 2004
    Date of Patent: June 24, 2008
    Assignee: AB SKF
    Inventor: Pieter Martin Lugt
  • Computer program product and a carrier for supporting a user designing a hydraulic cylinder by indicating preferred components of seals, rings and bearings
    Patent number: 7392164
    Abstract: Computer program product for supporting a user in designing a sealing system of a hydraulic cylinder by indicating at least one sealing system component related to one of: seals, guide rings and rod end bearings for application in the hydraulic cylinder based on the working conditions of the hydraulic cylinder. The computer program product is arranged to obtain sealing system component information items from a database, including: a sealing system component text information item; a duty level information item; a sealing system component graphic information item; and a rod end information item. The rod end information item includes sealing intensity as a function of environment temperature.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: June 24, 2008
    Assignee: Aktiebolaget SKF
    Inventors: Roland Spanner, Jürgen Scholer, Tage Staflund, Niclas Hansson
  • SEAL WITH GUIDE MEMBER
    Publication number: 20080143055
    Abstract: An oil seal having the usual lips for retaining oil and a guide member made of a variety of relatively stiff or rigid materials. The guide member is made slightly larger than the smallest diameter of the seal member when the seal rests on the shaft. The seal member can have the guide member on either the air side or the oil side of the seal. The disclosure also relates to a shipping plug, which is inserted into the seal and retains the oil in place during shipping when the seal is installed but a shaft is not installed.
    Type: Application
    Filed: December 13, 2006
    Publication date: June 19, 2008
    Applicant: SKF USA INC.
    Inventors: David Dobbs, Mark F. Spreitzer, Dennis Nelson Denton, Kacy D. Denton, Kevin R. Suva