With Cooling, Heating Or Insulating Patents (Class 384/476)
  • Patent number: 11293491
    Abstract: A bearing housing includes an inner housing portion centered on a central axis and an outer housing portion centered on the central axis. The inner housing portion has a first end and a second end positioned axially away from the first end. The outer housing portion has a first end and a second end positioned axially away from the first end. A disk portion connects the second end of the outer housing portion to the second end of the inner housing portion The outer housing portion includes a radially outer surface having a diameter Doh1, a radially inner surface having a diameter Doh2, and a shoulder on the first end of the outer housing portion and having a radially outer surface with a diameter Ds. Diameter Ds is smaller than the diameter Doh1 and larger than the diameter Doh2.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: April 5, 2022
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Darryl A. Colson, Clarence J. Wytas
  • Patent number: 11291195
    Abstract: A dual-bearing reel includes a reel body, a spool shaft, a rolling bearing, and an elastic element. The spool shaft is rotatable with respect to the reel body. The rolling bearing has an outer diameter of 8 mm or less and supports the spool shaft. The rolling bearing includes an outer ring having a holding groove in an outer peripheral surface thereof, an inner ring connected to the spool shaft so as to be integrally rotatable, and a rolling element disposed between the outer ring and the inner ring. The elastic element has an annular shape and is held in the holding groove. The holding groove is located in a position that does not overlap with the rolling element in a radial direction of the spool shaft. The outer ring has a minimum thickness that is 10% or more of the outer diameter of the rolling bearing.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: April 5, 2022
    Assignee: SHIMANO INC.
    Inventors: Kunio Takechi, Youhei Toake
  • Patent number: 11236779
    Abstract: A high-speed shaft assembly includes a shaft of a first material and an outer member of a second material disposed about the shaft, the shaft or outer member being rotatable about an axis. The two materials have substantially different coefficients of thermal expansion such that the shaft and/or the outer member is relatively displaceable along the axis at temperatures over 120° C. and less than ?18° C. A bearing inner ring is disposed about the shaft and has an outer race which is a cylindrical surface or an annular groove. A bearing outer ring is disposed about the inner ring and coupled with the outer member. The outer ring has an outer race which is the other one of the cylindrical surface and the groove. A plurality of balls disposed between the races are displaceable axially along the cylindrical race surface during relative displacement of the shaft and outer member.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: February 1, 2022
    Assignee: AKTIEBOLAGET SKF
    Inventor: Don L. Anthony
  • Patent number: 11137030
    Abstract: A method of producing a bearing ring of a rolling element bearing. External surfaces of the bearing ring are provided with an electrically insulating coating. The method providing the steps of (i) providing a prefinished bearing ring made of bearing steel. The bearing ring has a hardened and machined raceway surface for accommodating at least one row of rolling elements; (ii) providing a first coating on all surfaces of the bearing ring; (iii) removing the first coating from the external surfaces of the bearing ring; and (iv) providing the electrically insulating coating on the external surfaces.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: October 5, 2021
    Assignee: AKTIEBOLAGET SKF
    Inventors: Ralph Horchheimer, Gregor Schnabl
  • Patent number: 11105369
    Abstract: A method of forming a composite component having a brass or bronze powder metal portion sinter fit into a supporting, ferrous portion.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: August 31, 2021
    Assignee: GKN Sinter Metals, LLC
    Inventors: Alan C. Taylor, Ian W. Donaldson
  • Patent number: 10955007
    Abstract: One object is to reduce an effect of fastening of a restriction member, thereby to increase durability of a bearing retaining mechanism. The present invention relates to a bearing retaining mechanism. A bearing retaining mechanism according to an embodiment includes: a first member having an inner peripheral surface including an internal screw portion; a second member disposed on the inner peripheral surface; a rolling member configured to roll on a rolling surface formed on the second member; a crankshaft rotatably supported on the second member via the rolling member; and a restriction member supported on the first member and the second member, the restriction member including an external screw portion screwed on the internal screw portion of the first member.
    Type: Grant
    Filed: August 14, 2019
    Date of Patent: March 23, 2021
    Assignee: NABTESCO CORPORATION
    Inventor: Kazuya Furuta
  • Patent number: 10892136
    Abstract: A system for reducing clogging and deposition of feed gas on a gas tube entering an ion source chamber is disclosed. To lower the overall temperature of the gas tube, a gas bushing, made of a thermally isolating material, is disposed between the ion source chamber and the gas tube. The gas bushing is made of a thermally isolating material, such as titanium, quartz, boron nitride, zirconia or ceramic. The gas bushing has an inner channel in fluid communication with the ion source chamber and the gas tube to allow the flow of feed gas to the ion source chamber. The gas bushing may have a shape that is symmetrical, allowing it to be flipped to extend its useful life. In some embodiments, the gas tube may be in communication with a heat sink to maintain its temperature.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: January 12, 2021
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Craig R. Chaney, Adam M. McLaughlin
  • Patent number: 10823229
    Abstract: A rolling-element bearing includes a first ring element, a second ring element, a plurality of rolling elements rotatably disposed between the first ring element and the second ring element, and an electrically insulating layer on a surface of the first ring element. The electrically insulating layer is a ceramic layer containing a mixture of aluminum oxide (Al2O3) and titanium oxide, and the insulating layer includes titanium compounds that contain reduced titanium oxide (TiOx) and/or metallic titanium (Ti), and the insulating layer further includes a cured synthetic resin sealer.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: November 3, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventors: Karl Preis, Ronald Berger, Helmut Weninger
  • Patent number: 10816038
    Abstract: A sleeve is provided on a seal seat of a bearing ring, for example an outer bearing ring of a propshaft bearing. The sleeve receives a bearing seal in an interference fit.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: October 27, 2020
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Rajesh Shanbhag, Tyler Boger
  • Patent number: 10663005
    Abstract: A cooling architecture can include a longitudinally extending radially inner shaft, a radially outer support, and a bearing assembly. The longitudinally extending radially inner shaft can include an inner race. The inner race can define an inner circumferential chamber configured to carry an inner working fluid. The radially outer support can include an outer race. The bearing assembly can include a plurality of roller bearings disposed radially between the inner race and the outer race. The bearing assembly can be configured to radially align the inner shaft with respect to the outer support.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: May 26, 2020
    Assignees: Rolls-Royce North American Technologies Inc., Rolls-Royce Corporation
    Inventors: Bradley D. Belcher, Robert T. Duge
  • Patent number: 10634189
    Abstract: A rolling bearing for a sliding door includes an inner ring, an outer ring, a plurality of rolling elements arranged in a rollable manner in an annular space between the inner ring and the outer ring, and a jacket member formed of a resin composition and provided so as to cover the outer peripheral surface of the outer ring. The resin composition contains polyamide 66 and glass fiber. The polyamide 66 has a number average molecular weight of 34000 to 60000. The number average molecular weight is measured by gel permeation chromatography using hexafluoroisopropanol (HFIP) as a solvent and poly (methyl methacrylate) (PMMA) as a reference material. The content of the glass fiber is 10 to 40 mass %.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: April 28, 2020
    Assignee: JTEKT CORPORATION
    Inventor: Takeshi Kunishima
  • Patent number: 10605304
    Abstract: An insulated bearing includes a pair of bearing rings arranged concentrically to each other and rolling elements arranged to be rotatable between the pair of bearing rings, at least one of the bearing rings having an insulating layer formed thereon. The one of the bearing rings having the insulating layer formed thereon has an annular groove having an arc-shaped cross section formed on each of both end surfaces of the bearing ring. At least a surface from a non-raceway surface side circumferential surface to the annular groove of the bearing ring is covered by the insulating layer. The insulating layer is a ceramic thermal sprayed layer.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: March 31, 2020
    Assignees: NSK LTD., TOCALO CO., LTD
    Inventors: Manabu Yamada, Naozumi Nakata, Shinichi Nishiguchi, Junichi Takeuchi, Seiki Matsuura, Yuji Okada
  • Patent number: 10590993
    Abstract: A cooling architecture can include a longitudinally extending radially inner shaft, a radially outer support, and a bearing assembly. The longitudinally extending radially inner shaft can include an inner race. The inner race can define an inner circumferential chamber configured to carry an inner working fluid. The radially outer support can include an outer race. The bearing assembly can include a plurality of roller bearings disposed radially between the inner race and the outer race. The bearing assembly can be configured to radially align the inner shaft with respect to the outer support.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: March 17, 2020
    Assignees: Rolls-Royce North American Technologies Inc., Rolls-Royce Corporation
    Inventors: Bradley D. Belcher, Robert T. Duge
  • Patent number: 10539185
    Abstract: A rolling bearing for a sliding door includes an inner ring, an outer ring, a plurality of rolling elements arranged in a rollable manner in an annular space between the inner ring and the outer ring, and a jacket member formed of a resin composition and provided so as to cover the outer peripheral surface of the outer ring. The resin composition contains polyamide 66 and aramid fiber. The polyamide 66 has a number average molecular weight of 34000 to 60000. The number average molecular weight is measured by gel permeation chromatography using hexafluoroisopropanol (HFIP) as a solvent and poly (methyl methacrylate) (PMMA) as a reference material. The content of the aramid fiber is 5 to 25 mass %.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: January 21, 2020
    Assignee: JTEKT CORPORATION
    Inventor: Takeshi Kunishima
  • Patent number: 10508729
    Abstract: A strain wave gearing device has a grease temperature control mechanism for controlling the grease temperature of a portion of grease, of the grease filled inside an externally toothed gear of the strain wave gearing device, the portion of the grease being disposed on the outer peripheral side portion of a wave generator. The grease temperature control mechanism has a circular heater facing the outer peripheral side portion of the wave generator over the entire circumference from a direction of a device central axis line. By controlling the grease temperature of a specified portion inside the externally toothed gear, it is possible to reliably start the strain wave gearing device even in an extremely low temperature environment where the grease solidifies.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: December 17, 2019
    Assignee: Harmonic Drive Systems Inc.
    Inventor: Masaru Kobayashi
  • Patent number: 10422384
    Abstract: An insulating device is for a bearing mountable within a housing and includes a generally annular metallic body configured to couple with an outer ring of the bearing so as to be mounted to the bearing when the bearing is separate from a housing. The body includes an axial portion, the axial portion having an inner circumferential surface disposable about the outer ring outer surface and an opposing outer circumferential surface, and first and second radial portions each disposable against a separate one of the outer ring axial ends. At least one oxide layer is formed on at least one of the inner and outer circumferential surfaces of the body axial portion so as to substantially prevent electrical flow between the bearing and the housing.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: September 24, 2019
    Assignee: Aktiebolaget SKF
    Inventors: Mathieu Hubert, Igor Dorrestijn, Karl Preis
  • Patent number: 10287912
    Abstract: A bearing ring with integrated cooling channels and a method for producing a bearing ring with integrated cooling channels are provided.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: May 14, 2019
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Oskar Beer, Peter Gloeckner
  • Patent number: 10267355
    Abstract: A wheel bearing for a motor vehicle is provided with an outer ring, an inner ring arranged at least partially inside the outer ring, and with a longitudinal axis extending in the axial direction of the outer ring and of the inner ring from a vehicle inner side to a vehicle outer side. The inner ring is provided with a flange section on its end facing the vehicle inner side having a first section at the point that is farthest from axial center of the outer ring, and with a second section which forms a contact surface for attaching a brake disk. The flange section is formed stepped in such a way, so that the contact surface for attaching the brake disk is arranged offset relative to the section of the flange section at the farthest point from the axial center of the outer ring in the axial direction toward the vehicle inner side, and so that an at least a partially circumferential projection is located on the side opposite the contact surface for attaching the brake disk.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: April 23, 2019
    Assignee: AUDI AG
    Inventors: Johannes Albl, Michael Frisch
  • Patent number: 10260562
    Abstract: An insulated bearing includes an outer ring, an inner ring, and a plurality of rolling elements. At least one of the outer ring and an inner ring is made of metal, the plurality of rolling elements are provided between the outer ring and the inner ring, so as to be freely rolled, and at least one of the outer ring and an inner ring is coated with an insulating layer. The insulating layer is formed of a mixture in which silicon carbide and/or aluminum nitride as an additive are/is dispersed in aluminum oxide as a base matrix. The content of the additive is 1 to 40 mass % with respect to the total amount of the mixture.
    Type: Grant
    Filed: December 24, 2015
    Date of Patent: April 16, 2019
    Assignees: TOCALO CO., LTD, NSK LTD.
    Inventors: Junichi Takeuchi, Yuji Okada, Masaya Nagai, Manabu Yamada, Naozumi Nakata
  • Patent number: 9982719
    Abstract: A wheel bearing apparatus includes a hub shaft having a flange to which a wheel is attached and which is located on a vehicular outer side, an outer ring, a plurality of rolling elements, an annular seal member, and an annular slinger. The slinger has a circular ring portion that is in contact with the flange and a tube portion extending from the circular ring portion toward a vehicular inner side. The tube portion has pawl portions located on the vehicular inner side to engage with a recessed portion of an outer periphery of the hub shaft to inhibit the slinger from being displaced toward the vehicular inner side. The tube portion is further provided with a plurality of slits that is formed along a circumferential direction and that is open on the vehicular inner side. The slits include slits with different depths.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: May 29, 2018
    Assignee: JTEKT CORPORATION
    Inventor: Eishou Harada
  • Patent number: 9945240
    Abstract: A power turbine section for a gas turbine engine includes a heat shield assembly mounted to a bearing support, the heat shield assembly forms an outer diameter directed toward an inner vane platform of the power turbine vane array.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: April 17, 2018
    Assignee: PW POWER SYSTEMS, INC.
    Inventors: Fernando K Grant, Fabian D. Betancourt, John J Korzendorfer, Andrew P Boursy, Alexander Sankovich, Henry K Webster, Christopher W Moore, Charles C Wu
  • Patent number: 9828680
    Abstract: A method for operating a bearing arrangement (1) including at least one rolling bearing (2). The method provides for applying a positive electric potential to a bearing part (3) of the rolling bearing (2), another part (4) of the bearing arrangement (1) being connected as a cathode, and a current flowing between the bearing part (3) and the cathode (4) is limited.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: November 28, 2017
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Matthias Goss, Walter Holweger, Marcus Wolf, Toni Blass, Holger Kaup, Jorg Loos
  • Patent number: 9644674
    Abstract: A bearing variable preload system utilizing gaps between strokes for preload adjustment and elastic deformation of a sealing member, according to the present invention, comprises: a housing; bearings provided to the housing; a spindle coupled to the inner wheels of the bearings so as to rotate; and a variable preload unit provided to the housing, applying variable preload to the outer wheels of the bearings; a chamber comprised inside a variable preload unit in which the airtightness is maintained by a sealing member located between the housing member and pressing member touched with the outer wheels of the bearing; a pressure supply unit supplying air or oil pressure to a chamber through a supply pipe provided to the housing so as to vary a preload applied to the outer wheel of the bearing.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: May 9, 2017
    Assignee: ECHO TECH CO., LTD.
    Inventor: Sung Bok Kim
  • Patent number: 9545822
    Abstract: In summary, provided is a wheel bearing unit having a cover element which can be used as a pre-seal to a main seal and encloses the fastening elements of the wheel flange. The outstanding sealing effect has been favored in the past, however a disadvantage in terms of assembly and dismantling is produced which the invention seeks to eliminate. Therefore one or more openings are provided which are formed in the cover. The opening or openings enable the simple dismantling or assembly of the fastening elements on the wheel flange and can advantageously also be closed, such that both the sealing effect and an easy dismantling or assembly are possible.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: January 17, 2017
    Assignee: Schaeffler Techologies AG & Co. KG
    Inventors: Alexander Happ, Wilhelm Walter
  • Patent number: 9410578
    Abstract: Anti-friction bearing, comprising a metallic outer ring and a metallic inner ring with respective rolling-body raceways, and a plurality of metallic rolling bodies which roll on said rolling-body raceways, wherein an electric insulation layer (11) is provided on the outer ring (2) and/or on the inner ring (3) on the raceway side and/or on the rolling bodies (4).
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: August 9, 2016
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Tim Matthias Hosenfeldt, Juergen Gierl, Yashar Musayev
  • Patent number: 9341217
    Abstract: A system and method to cool a bearing. The system includes a heat pipe extending through a thickness of an inner ring of the bearing from a first surface to an opposing second surface and a cooling lubricant in fluid communication with the first surface. The method includes exposing the first surface of the roller bearing to lubricant and transferring heat energy through the heat pipes.
    Type: Grant
    Filed: May 1, 2014
    Date of Patent: May 17, 2016
    Assignee: Bell Helicopter Textron Inc.
    Inventors: Kenneth Myron Jackson, Monte Alan McGlaun
  • Patent number: 9321308
    Abstract: A wheel hub bearing unit including a plurality of rolling bodies disposed between annular elements. One of the annular elements is a rotating element that includes a spindle on a side facing the outboard side of the vehicle having a mounting flange adapted to receive a vehicle wheel. A frontal surface of the mounting flange is covered by a layer of UV photopolimerizable synthetic plastic material having a predetermined thickness deposited on the frontal surface of the flange in the non-polimerized state by a mixed air spraying nozzle, by rotating the wheel hub bearing unit about a symmetry axis thereof with the nozzle arranged at a radial distance from a peripherally outer edge of the flange, and has a spraying axis which forms, with the symmetry axis, an angle from 20° to 80°; the synthetic plastic material being sprayed by the nozzle at a temperature higher than the room temperature.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: April 26, 2016
    Assignee: AKTIEBOLAGET SKF
    Inventors: Paolo Baratti, Andrea Serafini
  • Patent number: 9234548
    Abstract: A bearing arrangement comprising mutually rotatable components, and devices for integrated heating and cooling of rolling-element raceways, or of mutually rotatable components, and a method for integrated heating or cooling applicable to the mutually rotatable components, and devices for integrated heating or cooling of the components and rolling-element raceways wherein the respective heating and/or cooling is effected by direct heat input into the components, or direct heat removal from the components, and is controllable, and is produced by the interaction of cold- or heat-producing elements, or functions or devices, and is adapted to switch between a heating effect and a cooling effect.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: January 12, 2016
    Assignee: IMO Holding GmbH
    Inventor: Hubertus Frank
  • Patent number: 9234439
    Abstract: A bearing compartment for a gas turbine engine comprises a housing that surrounds an engine axis of rotation and has an inner surface and an outer surface spaced radially outward of the inner surface. The housing defines an open volume for a lubricant and includes a bearing seat to seat a bearing for rotation about the engine axis of rotation. The housing includes at least one cooling protuberance extending into the open volume.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: January 12, 2016
    Assignee: United Technologies Corporation
    Inventors: Anthony Demitraszek, Sr., Woo Y. Soh
  • Patent number: 9140304
    Abstract: A roller bearing assembly includes at least one outer ring (16, 18) with an outer track (24, 26), which is surrounded on its outer side by an outer part (36), and at least one inner ring (20, 22) with an inner track (28, 30), which surrounds the inner part (52). The inner part (52) and the outer part (36) project axially beyond the inner ring (20, 22) and the outer ring (16, 18), so that an explosion prevention gap (62) is formed between the inner part (52) and the outer part (36). The explosion prevention gap (62) is at least substantially linear and cylindrical.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: September 22, 2015
    Assignee: AKTIEBOLAGET SKF
    Inventors: Steffen Hain, Jörg Lange, Hans-Jürgen Liesegang, Dieter Plöβl
  • Patent number: 9097264
    Abstract: A product is disclosed for use with a turbocharging system. The product may include a bearing housing configured to house a bearing and having a flange. A shaft may extend through the bearing and a turbine wheel may be connected to one end of the shaft. A turbine housing may be disposed around the turbine wheel and may include an annular wall adapted to mate with the flange of the bearing housing. A cooling plate may comprise a washer shaped body and may be disposed around, and spaced apart from, the bearing housing. The cooling plate may be connected to the turbine housing to transfer heat from the turbine housing and away from the bearing housing.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: August 4, 2015
    Assignee: BorgWarner Inc.
    Inventor: Donald Michael Kennedy
  • Patent number: 9057386
    Abstract: A ram air fan inner housing for a ram air fan assembly comprises a center body housing, an end cup attached to the center body housing, and a perforated cone. The perforated cone is attached to the center body housing and the end cup such that the perforated cone extends away from the center body housing and radially inward toward an axis of the inner housing.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: June 16, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Lawrence Binek, Eric Chrabascz, David A. Dorman
  • Patent number: 9022663
    Abstract: An oil-lubricated anti-friction bearing is provided for a horizontal arrangement of a rotational axis with a shaft seal that separates a bearing inner chamber, which accommodates rolling bodies, from a bearing outer side, and has a clamping arrangement which acts on the shaft seal from a bearing outer side in order to fix the shaft seal axially. The clamping arrangement has an outlet for oil.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: May 5, 2015
    Inventors: Andreas Palmer, Jörg Rollmann
  • Publication number: 20150117807
    Abstract: An outer ring for a rolling-element bearing includes a first region having a first diameter on an outer surface of the outer ring, a second region on the outer surface of the outer ring, the second region having a second diameter larger than the first diameter, a circumferential groove at a boundary between the first region and the second region, and a filler in the groove. The filler is configured such that a temperature compensation ring can be mounted to the outer ring at the first region so that it abuts on an axial end of the second region, the temperature compensation ring having an inner diameter, at least in the region which is disposed over the groove in the radial direction, that corresponds to the outer diameter of the first region.
    Type: Application
    Filed: October 22, 2014
    Publication date: April 30, 2015
    Applicant: AKTIEBOLAGET SKF
    Inventors: Rainer Spies, Padelis Katsaros
  • Patent number: 8984858
    Abstract: One embodiment of the present invention is a unique gas turbine engine. Another embodiment of the present invention is a unique gas turbine engine bearing system. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for gas turbine engines and gas turbine engine bearing systems. Further embodiments, forms, features, aspects, benefits, and advantages of the present application will become apparent from the description and figures provided herewith.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: March 24, 2015
    Assignee: Rolls-Royce Corporation
    Inventor: Matthew Michael Miller
  • Publication number: 20150078694
    Abstract: A tubular bushing co-moldable with tubs of washing machines is provided. The tubular bushing is located between a humid side and a dry side of the washing machine, crossed by a drive shaft extending along a central axis (A) and provided with two rolling bearings arranged along the axis (A); a spacer interposed between the two bearings; a sealing element arranged axially alongside a first bearing close to the humid side; and a containing sleeve which is co-molded around the two bearings and the spacer; the sealing element and the first bearing bound and axially enclose an annular chamber, which is further closed in the radial direction by the drive shaft and is in fluid connection with the external environment by means of two ducts extending directly through the containing sleeve, eliminating any pressure and/or temperature gradient between the annular chamber and the external environment.
    Type: Application
    Filed: September 15, 2014
    Publication date: March 19, 2015
    Applicant: AKTIEBOLAGET SKF
    Inventors: Roberto Mola, Riccardo Restivo, Gianpiero Scaltriti
  • Publication number: 20150023621
    Abstract: A bearing for a wind turbine, the use of the bearing and a method to control the temperature of the bearing is provided. A bearing for a wind turbine comprises an inner ring and an outer ring. The inner ring and the outer ring are prepared and arranged in a way to rotate with respect to each other. The inner ring comprises at least one channel. The channel is prepared and arranged in a way that air flows along inside the channel so that excess heat of the inner ring is removed by the airflow in the channel.
    Type: Application
    Filed: May 19, 2014
    Publication date: January 22, 2015
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: UFFE ERIKSEN, CLAUS MICHAELSEN, CLAUS THYGESEN
  • Publication number: 20150010255
    Abstract: A cap for bearing device is attached to one end portion of an outer race member in a bearing device to block an opening portion, and includes: a cylindrical part that is fitted to the outer race member; a lid part configured to block an end portion of the cylindrical part; an annular seal part configured to, when being fitted to the outer race member, be compressed between the cap for the bearing device and the outer race member; and a ventilation part, which, in the course of fitting the cylindrical part to the outer race member, allows air to pass between inside and outside of a bearing space, and in the state where the cylindrical part is fitted to the outer race member, the ventilation is shut down.
    Type: Application
    Filed: January 24, 2013
    Publication date: January 8, 2015
    Inventor: Koki Ishida
  • Publication number: 20140376849
    Abstract: A power generating bearing assembly (100) comprises a bearing subassembly (120) retained by a bearing housing (110). During operation, friction and other factors increase a temperature of the bearing assembly (100). The housing (110) can optionally include a bearing cooling passage system comprising at least one liquid cooling passage (134) formed internally therein. The liquid cooling passage (134) would be routed proximate the bearing subassembly (120) to remove heat therefrom. A thermo-generator cavity (180) extends inward from an exterior surface of the housing (110), terminating at a cavity end wall (182). The cavity (180) is formed at a location identified having a higher temperature. A Thermo-Electric Generator (TEG) (200) is inserted within the cavity (180) and thermally coupled to the end wall (182). The Thermo-Electric Generator (TEG) (200) utilizes a temperature difference between the end wall (182) and the ambient air to generated electric power.
    Type: Application
    Filed: October 23, 2012
    Publication date: December 25, 2014
    Inventors: Frank Bartl, Andreas Clemens Van Der Ham
  • Publication number: 20140369830
    Abstract: A bearing arrangement is disclosed. The bearing arrangement includes first and second bearings, with each bearing including a respective support element and a respective set of rolling elements and defining a respective load path extending through the respective support element and rolling elements. The support elements are coupled such that a load applied to either support element is transmitted through both the first and second load paths. The arrangement further includes a pair of superelastic titanium alloy elements located in the respective load paths to provide resilient movement between the bearings when a load is applied to the bearing arrangement.
    Type: Application
    Filed: May 29, 2014
    Publication date: December 18, 2014
    Applicant: ROLLS-ROYCE PLC
    Inventors: Paul FLETCHER, John Richard WEBSTER, Alan Robert MAGUIRE
  • Patent number: 8899373
    Abstract: In a power steering system, in particular for a motor vehicle, comprising a servo-motor, which drives an axially displaceable component by way of a steering nut that is mounted rotatably, but axially non-displaceably in a gear housing, the steering nut is mounted in the gear housing in a radial bearing comprising an inner ring and an outer ring. A heat-insulating intermediate element is disposed between the outer ring of the radial bearing and the gear housing, or a cover of the gear housing, and/or between the inner ring of the radial bearing and the steering nut for the purpose of thermal decoupling.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: December 2, 2014
    Assignee: ZF Lenksystem GmbH
    Inventors: Arthur Rupp, Steffen Truthmann
  • Publication number: 20140348453
    Abstract: A power generating bearing assembly (100) comprises a bearing subassembly (120) retained by a bearing housing (110). During operation, friction and other factors increase a temperature of the bearing assembly (100). The housing (110) includes a bearing cooling passage system comprising a coolant supply port (130), a liquid cooling passage (134), and a coolant return port (138). The liquid cooling passage (134) is routed proximate the bearing subassembly (120) to remove heat therefrom. A thermo-generator cavity (180) is formed into the housing (110) between the coolant supply port (130) and the coolant return port (138). A Thermo-Electric Generator (TEG) (200) is inserted into the cavity (180), orienting a cold carrier side (220, 222) towards the supply port (130) and a hot carrier side (240) towards the return port (138). The Thermo-Electric Generator (TEG) (200) utilizes a temperature difference between the supply port (130) and the return port (138) to generated electric power.
    Type: Application
    Filed: October 3, 2012
    Publication date: November 27, 2014
    Inventors: Frank Bartl, Andreas Clemens Van Der Ham
  • Patent number: 8894288
    Abstract: A system for cooling a transmission of a hover-capable aircraft, the system having: a stator; a heat exchanger connectable thermally to the transmission; a fan for creating a current of a first heat-carrying fluid from the heat exchanger to the fan itself, to remove heat from the heat exchanger; a rotary member, which rotates about an axis to rotate an impeller of the fan about the axis; and a bearing supporting the rotary member for rotation about the axis; the system also having cooling means for cooling the bearing, and in turn having conducting means for conducting a current of a second heat-carrying fluid along a path from an outside environment, external to the bearing, to and to cool the bearing itself.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: November 25, 2014
    Assignee: AgustaWestland S.p.A.
    Inventors: Paolo Pisani, Andrea Gabrielli
  • Patent number: 8807840
    Abstract: A turbocharger uses a high speed rolling element bearing system. An exemplary rolling element bearing system includes a polymer sleeve to impede the flow of heat from the bearing housing into the outer race of the rolling element bearing system. In a second embodiment of the invention, the sleeve is supported by an oil film. In a third embodiment of the invention, the bearing cartridge is damped by a damping medium which also connects the bearing cartridge to the bearing housing.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: August 19, 2014
    Assignee: BorgWarner Inc.
    Inventors: Timothy House, Paul Diemer, Allan Kelly, Augustine Cavagnaro
  • Patent number: 8764301
    Abstract: An anti-friction bearing, which has an outer ring, an inner ring and rolling bodies that are arranged between the rings, distributed over a circumference of the rings, and roll on the rings. For an increase of thermal insulation, electrical insulation and the like, a film section, which is manufactured without the removal of material from a plastic film, is attached on an outer circumference of the outer ring over at least part of an axial width of the outer ring and at least over part of an outer circumference of the outer ring.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: July 1, 2014
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Ludwig Winkelmann, Gudrun Martin, Juergen Windrich
  • Publication number: 20140161380
    Abstract: Provided is a cooling mechanism capable of efficiently cooling a ball screw bearing device or the vicinity of the bearing device. For that reason, a ball screw bearing device includes an inner ring that fits to an end portion of a screw shaft of a ball screw and rotates integrally with the screw shaft; an outer ring that rotatably supports the inner ring via a plurality of rolling elements arranged on an outer peripheral surface of the inner ring; and a housing that has an inner peripheral surface that abuts against the outer peripheral surface of the outer ring and rotatably supports the screw shaft. A plurality of through-holes for cooling that passes through both ends of the housing and causes a cooling medium to pass therethrough are formed in an axial direction of the housing.
    Type: Application
    Filed: July 20, 2012
    Publication date: June 12, 2014
    Applicant: NSK Ltd.
    Inventor: Yutaka Nagai
  • Publication number: 20140111046
    Abstract: An insulated bearing, a dynamoelectric machine including the insulated bearing, and a method of forming the insulated bearing are disclosed. In an embodiment, the bearing includes an outer ring, an inner ring disposed within the outer ring and concentric therewith. An insulating ring is disposed between the inner ring and the outer ring, and includes an outer circumferential serration extending radially outward from an outer surface of the insulating ring, and an inner circumferential serration extending radially inward from an inner surface of the insulating ring. These serrations mate with features of respective surfaces of the outer and inner rings.
    Type: Application
    Filed: October 22, 2012
    Publication date: April 24, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Harikiran Murikipudi, Vijayakumar Tumma
  • Patent number: 8678406
    Abstract: Vehicles and systems are provided. In accordance with one embodiment, for example, a vehicle may include, but is not limited to, an axle, a bearing coupled to the axle, a knuckle coupled to the bearing, and an isolation sleeve coupled between the bearing and the knuckle. In one embodiment, for example, the isolation sleeve may be composed of solid zinc. In another embodiment, for example, the isolation sleeve may include a zinc coating.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: March 25, 2014
    Assignee: GM Global Technology Operations LLC
    Inventor: Todd D. Albertson
  • Patent number: 8651745
    Abstract: In an electrical machine having a roller bearing, whose inner ring is seated on the rotor shaft of the electrical machine, whose outer ring is seated in a housing and which is located in a closed area, the roller bearing is intended to be protected against electrical breakdowns. For this purpose, the area contains a liquid on an aqueous basis, whose level overhangs the external contour of the inner ring at its lowest point. The inner ring and the outer ring are therefore conductively connected and the voltage can be equalized between the rotor and the housing of the electrical machine, without any impediment and without breakdowns. In an application as a geared motor, the lubricant for the gearbox is also a liquid on an aqueous basis.
    Type: Grant
    Filed: August 10, 2010
    Date of Patent: February 18, 2014
    Assignee: MAGNA STEYR Fahrzeugtechnik AG & Co. KG
    Inventors: Franz Mayr, Ferdinand Tangl
  • Publication number: 20140044387
    Abstract: A bearing, including a bearing part, in particular a bearing ring (5, 6) having a cathodic corrosion prevention device. The aim of providing a bearing having a permanent, adjustable corrosion prevention device that requires only minor structural changes is achieved according to the invention in that the bearing part, in particular the bearing ring (5, 6), is connected as the cathode of an external power source, and that the anode (8, 10) of the external power source is arranged spaced apart from the bearing part, in particular the bearing ring (5, 6).
    Type: Application
    Filed: April 12, 2012
    Publication date: February 13, 2014
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Nico Kirchhoff, Christian Schulte-Nolle, Thomas Loesche, Claus Muller