Patents Assigned to SKF
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Publication number: 20150069713Abstract: A seal assembly is for sealing between a housing and a rotary shaft includes an annular sealing member coupled with the housing and having inner and outer circumferential surfaces and a plurality of projections extending radially from the outer surface and spaced circumferentially about a central axis. Each projection has first and second axial ends and the plurality of projections define first and second projections. An annular biasing member is disposed about the sealing member outer surface and exerts an inwardly directed force on the sealing member. The biasing member has first and second ends and is arranged on the sealing member with the biasing member first end contacting the second end of each first projection and the biasing member second end contacting the first end of each second projection. As such, the biasing member extends axially and circumferentially between the first and second projections.Type: ApplicationFiled: December 17, 2012Publication date: March 12, 2015Applicant: AKTIEBOLAGET SKFInventors: Yefim Epshetsky, Alex Paykin
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Patent number: 8973815Abstract: A data collection apparatus and unit are provided. The apparatus includes a probe configured to measure one or more operating conditions of a machine, and a tag reader configured to receive a tag identifier transmitted by a tag positioned proximal to the machine. The apparatus also includes one or more processors configured to communicate with the probe and the tag reader, and a memory system including one or more computer-readable media storing instructions that, when executed by the one or more processors, are configured to cause the apparatus to perform operations. The operations include determining that the apparatus is physically proximal to the machine, and reading a tag identifier from the tag of the machine. The operations also include storing a measurement received from the probe, and associating the measurement with the tag identifier.Type: GrantFiled: April 29, 2013Date of Patent: March 10, 2015Assignee: Aktiebolaget SKFInventor: Jonathan David Murphy
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Publication number: 20150059184Abstract: A method of fabricating a bushing for supporting a shaft within a housing includes: determining a size of a section of the housing inner circumferential surface and a size of a section of the shaft outer circumferential surface; fabricating a generally tubular body having an outer circumferential surface sized to fit within the housing inner surface section and an inner circumferential surface sized to receive at least a portion of the shaft; and separating the tubular body into a plurality of generally arcuate tube segments. Preferably, the tubular body is formed of a metallic material and is separated by cutting. A method of supporting a shaft within a housing includes forming an annular groove in the housing and fabricating a bushing in the manner described above to fit within the groove.Type: ApplicationFiled: August 28, 2013Publication date: March 5, 2015Applicant: AKTIEBOLAGET SKFInventors: Scott Michael Barth, David Afton Nelson
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Publication number: 20150059520Abstract: A transmission element according to the invention for an actuating system integrated into an internal combustion engine provides a cam follower including a roller articulated on a shaft mounted on a piston suitable for sliding in a bore formed in a body of the transmission element is provided. The shaft having a body extending around a longitudinal axis, and includes at least one sacrificial tip attached on one of the ends of the body of the shaft. The sacrificial tip is made from a material having a hardness below the hardness of the material of the body defining the bore.Type: ApplicationFiled: August 27, 2014Publication date: March 5, 2015Applicant: Aktiebolaget SKFInventors: Charles Chambonneau, Benoît Hauvespre
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Publication number: 20150063734Abstract: A device including a sealing assembly having a first annular shield constrainable to a rotating first member, a second annular shield facing the first shield and constrainable to a stationary second member, and an annular seal supported by the first shield and provided with annular lips cooperating with the second shield. The device has a signal generator device having a third shield constrainable to the first member and an annular signal generator element arranged facing the first and the second shields; wherein the first shield has a flange portion, having on a side of the first shield, a first and a second L-fold in opposite directions which delimit a first annular surface facing the annular lips and the second shield; wherein the annular signal generator element is delimited towards the second shield by a second annular surface facing the annular lips forming an obtuse angle with the first annular surface.Type: ApplicationFiled: September 4, 2014Publication date: March 5, 2015Applicant: AKTIEBOLAGET SKFInventor: Daniele Duch
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Publication number: 20150059861Abstract: A compression system and method of manufacturing a compression system are provided. The compression system includes a compressor, and a tank rotatably coupled with the compressor and configured to receive a compressed fluid therefrom. The compression system further includes a sheave configured to receive a hose, with the sheave being coupled with the tank such that the sheave and the tank are rotationally fixed relative to one another and rotatable with respect to the compressor.Type: ApplicationFiled: August 29, 2013Publication date: March 5, 2015Applicant: AKTIEBOLAGET SKFInventors: Timothy Wayne Moore, Edward L. Walter
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Patent number: 8967875Abstract: A bearing includes a liquid lubricant and at least one ceramic component, which, during operation of the bearing, is subject to rolling contact load. A tribological surface of the at least one ceramic component is impregnated with a sealant, such that the liquid lubricant is prevented from entering discontinuities in the tribological surface.Type: GrantFiled: November 25, 2010Date of Patent: March 3, 2015Assignee: Aktiebolaget SKFInventors: Andriy Volodymyrovych Rychahivskyy, Charlotte Vieillard, Xiaobo Zhou
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Patent number: 8967877Abstract: A bearing assembly includes a bearing support having at least one bearing and at least one receptacle for at least one outer ring of the at least one bearing. The outer ring of the bearing has at least one annular groove, into which a snap ring is inserted relative to the bearing support in order to axially fix the outer ring. At least one alignment element is disposed on or in the bearing support. The snap ring is retained by alignment element relative to the bearing support at a defined angle relative to the rotational axis of the bearing.Type: GrantFiled: November 25, 2010Date of Patent: March 3, 2015Assignee: Aktiebolaget SKFInventors: Jürgen Bitzl, Burkhard Buchheim, Alexander Dilje, Helmut Hauck, Stefanie Seufert
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Patent number: 8968108Abstract: A rotational and axial control spring includes a tubular casing, a shaft, and a plurality of elongated elastomeric members. The casing comprises a tubular cross sectional equilateral convex polygon shape, the tubular shape extending uniformly between a first and second casing end. The shaft is fabricated having a cross sectional shape mimicking the equilateral convex polygon casing shape, a series of exterior surfaces extending longitudinally between a first smaller end and second larger end, wherein the exterior surfaces form a square frustum shape. The elastomeric members are formed as cylindrical frustums. The shaft is inserted within the casing interior. Each elastomeric member is positioned contacting a respective shaft exterior surface and a pair of adjacent casing interior surfaces. The elastomeric members provide rotational spring with adjustable resistant force and dampening functions. The tapered features provide an axial retention function.Type: GrantFiled: December 12, 2012Date of Patent: March 3, 2015Assignee: Aktiebolaget SKFInventor: Jeffrey L. George
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Publication number: 20150052758Abstract: A method for adjusting an axial preload in a bearing assembly that has two rolling-element bearings that are axially pressable against each other, each of the two rolling-element bearings including at least one bearing outer ring and at least one bearing inner ring and at least one row of rolling elements disposed between the at least one bearing outer ring and at least one bearing inner ring. The method includes a) driving the bearing assembly by rotating one of the bearing outer ring and the bearing inner ring while holding other bearing ring fixed and measuring the rotational speed of the circulation of the rolling elements about the bearing assembly axis or of a bearing cage about the stationary bearing ring, and b) changing the axial preload in the bearing assembly until a desired rotational speed has been obtained.Type: ApplicationFiled: May 2, 2014Publication date: February 26, 2015Applicant: Aktiebolaget SKFInventor: Padelis Katsaros
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Patent number: 8960695Abstract: The present invention concerns a suspension thrust bearing device adapted to receive a shock absorber piston rod along a main axis (X1), the device including a single bearing forming an axial thrust bearing and including an inner race, an outer race and rolling members disposed between the inner race and the outer race, and at least one intermediate member adapted to transmit to the inner race essentially axial forces exerted on the device by a suspension spring. One of the inner race and the intermediate member extend(s) radially beyond the outer race in the direction of the main axis (X1), forming a bearing surface for fixing and centering the shock absorber piston rod relative to the device. The invention also concerns a motor vehicle McPherson strut including a shock absorber and a suspension thrust bearing device as referred to above.Type: GrantFiled: February 7, 2013Date of Patent: February 24, 2015Assignee: Aktiebolaget SKFInventors: Christophe Houdayer, Jean-Luc Jadeau, Herve Maury, Bruno Montboeuf, Jean-Marc Soudee, Desire Vidot
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Patent number: 8961021Abstract: A roller body for a roller bearing includes at least one cavity extending from an end face of the roller body, at least one retaining element is disposed in the cavity, and at least one sensor is disposed in the cavity, such as in or on the retaining element. The sensor is at least partially surrounded by an elastic material in a protective manner.Type: GrantFiled: July 25, 2011Date of Patent: February 24, 2015Assignee: Aktiebolaget SKFInventors: Arno Stubenrauch, Armin Olschewski, Alexander de Vries, Sebastian Ziegler, Goran Christiansson, Eugene Sigal, Frank de Wit, Hendrik Mol
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Patent number: 8960680Abstract: A seal assembly is for sealing a clearance space about a shaft, the shaft being rotatable about a central axis, and includes a generally annular sealing member disposed about the shaft. The sealing member is radially deflectable between an inner position and an outer position, the sealing member sealing the clearance space when located at the inner position. A generally annular rotor is disposed about and rotatably coupled with the shaft, the rotor having a generally annular cavity sized to receive the sealing member and at least one and preferably a plurality of lift passages extending at least partially radially through the rotor. Each lift passage has an inner port fluidly coupled with the cavity and an outer port fluidly coupled with an exterior atmosphere such that suction generated within the lift passages when the rotor angularly displaces about the axis generally retains the sealing member at the outer position.Type: GrantFiled: December 19, 2011Date of Patent: February 24, 2015Assignee: Aktiebolaget SKFInventors: Yefim A. Epshetsky, Mathew Peter Rosauer
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Patent number: 8961026Abstract: A flanged bearing ring is made up of two different materials joined together as a single piece, namely a radially inner annular insert and a flanged, radially outer lightweight body formed around the insert. The insert forms one or more raceways and is made of a hard material, such as bearing steel. The outer body is made of a lightweight material, such as aluminium alloy, with a higher thermal expansion coefficient higher than that of the hard material which the inner insert is made of. A relief formed by the insert extends into a groove of the outer body. Another relief, formed by the outer body, extends into a further groove of the insert. These reliefs and grooves interlock the insert and the outer body together against relative movement under all temperature conditions.Type: GrantFiled: April 15, 2010Date of Patent: February 24, 2015Assignee: Aktiebolaget SKFInventors: Paolo A Re, Cornelius Petrus Antonius Vissers
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Patent number: 8961028Abstract: A bearing assembly includes a hub element or housing element which has an accommodating bore for at least one rolling-element bearing, the rolling-element bearing being disposed with its outer ring in a press-fit arrangement in the accommodating bore, and the outer ring having at least one first axial region along at least one raceway of the outer ring and at least one second axial region extending outside the raceway. To ensure a proper fit of the bearing ring in the hub or housing element over a wide range of operating temperatures, the receiving bore and the outer circumference of the outer ring are configured such that at the ambient temperature the radial clamping force between accommodating bore and outer ring in the first region is smaller than in the second region.Type: GrantFiled: June 27, 2013Date of Patent: February 24, 2015Assignee: Aktiebolaget SKFInventors: Thilo Beck, Rico Dittmar
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Publication number: 20150047585Abstract: An engine housing of an internal combustion engine has at least one bore and a bearing assembly mounted in the bore for rotatably supporting a camshaft via first and second rolling-element bearings that each have an outer ring. A slot-shaped gap extends from the bore through at least a part of the engine housing up to a point at the surface of the engine housing, at least one screw bore is disposed in a first portion of the engine housing on a first side of the slot-shaped gap, a threaded bore is disposed in a second portion of the engine housing on a second side of the slot-shaped gap, and a screw extends through the screw bore, across the slot-shaped gap and into the threaded bore and is configured to pull together the first portion and the second portion to clamp the outer ring.Type: ApplicationFiled: August 13, 2014Publication date: February 19, 2015Applicant: AKTIEBOLAGET SKFInventor: Volker Wendt
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Publication number: 20150049971Abstract: A cage for a roller bearing having a bearing axis extending in an axial direction, the cage including at least two crosspieces which extend between two axially spaced edges and are spaced from one another in a circumferential direction oriented perpendicular to the axial direction so that a rolling element can be disposed between them. At least one crosspiece of the at least two crosspieces has a first surface region that is a constant radial distance from the bearing axis, and the at least one crosspiece has a second surface region which is adjacent to the first surface region and includes a step along which the radial distance from the bearing axis varies.Type: ApplicationFiled: August 13, 2014Publication date: February 19, 2015Applicant: AKTIEBOLAGET SKFInventors: Rico Dittmar, Volker Wendt
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Publication number: 20150043858Abstract: A bearing system for supporting components that are movable relative to one another includes at least one bearing and a preload mechanism for changing a preload of the at least one bearing based on an operating state of the bearing system, where the preload mechanism includes, for example, a piezoelectric element, a Peltier element, an expansion material or a micromechanical element.Type: ApplicationFiled: August 5, 2014Publication date: February 12, 2015Applicant: AKTIEBOLAGET SKFInventors: Wolfgang Aust, Hubert Herbst, Joerg Wainus, Volker Wendt
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Publication number: 20150042044Abstract: A sealing assembly includes a seal support having a support ring made from an elastomeric material, at least one seal element having a ring made from a polymer material, and an abutment ring against which a radial portion of the seal element axially abuts. The seal element is connected in a materially-bonded manner to the support ring along a first radially outer portion of the seal element, and the seal element axially abuts on the abutment ring along a second radially inner portion of the seal element. The seal element and the abutment ring are free of any connection along the second radially inner portion of the seal element.Type: ApplicationFiled: August 4, 2014Publication date: February 12, 2015Applicant: AKTIEBOLAGET SKFInventors: Helmut Benedix, Juergen Kurth, Willy Seewald, Roland Worsley
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Patent number: 8950945Abstract: A roller bearing for a tunneller having an inner ring, an outer ring, two sets of rolling elements arranged between the tracks formed on the rings, the first set of rolling elements including at least one roller able to withstand axial stresses and the second set of rolling elements including an angular-contact roller that is able to withstand both radial and axial stresses, the inner and outer rings being concentric about an axis of rotation of the roller bearing. Each roller in the first set includes a first axis of revolution (Y1-Y1) inclined in relation to the axis of rotation (X-X) by a first angle (?1) of between 45° and 95° and each roller in the second set includes a second axis of revolution (Y2-Y2) inclined in relation to the axis of rotation (X-X) by a second angle (?2) of between 0° and 45°.Type: GrantFiled: July 2, 2013Date of Patent: February 10, 2015Assignee: Aktiebolaget SKFInventors: Cyril Bouron, Jean-Baptiste Magny, Pascal Ovize