Plural Bearings One Plain And One Antifriction Patents (Class 384/126)
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Patent number: 12258849Abstract: An arrangement for supporting one or more bearings of a crankshaft assembly of a hydraulic fracturing pump includes a frame and one or more bearing supports. The frame is of a first material and defines one or more bearing support profiles. The bearing supports are of a second material different from the first material of the frame. The bearing supports are cast-in-place within the corresponding bearing support profiles of the frame and are configured to be in contact with an outer race of the corresponding bearings of the crankshaft assembly. Compared to the first material of the frame, the second material of the bearing supports is more effective at preventing slippage of the bearings.Type: GrantFiled: March 16, 2023Date of Patent: March 25, 2025Assignee: SPM Oil & Gas Inc.Inventors: Chandu Kumar, Johnny Eric DeLeon, II, Jeffrey Haiderer, Chih Hau Chen
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Patent number: 12071983Abstract: A bearing box for a rotating roller for supporting or transporting a high-temperature object. The bearing box includes a bearing and seal units disposed therein. A cooling jacket is disposed at an outer periphery of the bearing box so that the cooling jacket covers at least a portion of an axial region of the bearing and at least a portion of an axial region of the seal unit. The cooling jacket has a cooling water inlet and a cooling water outlet, and the bearing box is cooled by cooling water supplied to the cooling jacket through the cooling water inlet.Type: GrantFiled: September 18, 2019Date of Patent: August 27, 2024Assignee: JFE STEEL CORPORATIONInventor: Shinya Ito
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Patent number: 12031585Abstract: A bearing box for a rotating roller for supporting or transporting a high-temperature object. The bearing box includes a bearing and seal units disposed therein. A cooling jacket is disposed at an outer periphery of the bearing box so that the cooling jacket covers at least a portion of an axial region of the bearing and at least a portion of an axial region of the seal unit. The cooling jacket has a cooling water inlet and a cooling water outlet, and the bearing box is cooled by cooling water supplied to the cooling jacket through the cooling water inlet.Type: GrantFiled: September 18, 2019Date of Patent: July 9, 2024Assignee: JFE STEEL CORPORATIONInventor: Shinya Ito
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Patent number: 11608832Abstract: The present embodiment comprises: a rotary shaft; a rotor mounted on the rotary shaft; a stator for encompassing the outer circumference of the rotor; an impeller mounted on the rotary shaft so as to be spaced from the rotor; a bearing housing having a through-hole through which the rotary shaft passes; a rolling bearing disposed in the bearing housing and coupled to the rotary shaft; and a gas bearing disposed in the bearing housing so as to be spaced from the rolling bearing in an axial direction, and facing the outer circumference of the rotary shaft.Type: GrantFiled: October 22, 2018Date of Patent: March 21, 2023Assignee: LG Electronics Inc.Inventors: Sunggi Kim, Byungjik Kim, Eunji Hwang, Donghan Kim, Changlae Kim
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Patent number: 11536159Abstract: A bearing assembly for supporting rotation of a shaft in a turbocharger includes an inner race extending along an axis. The inner race is configured to be coupled to the shaft. The bearing assembly also includes an outer race spaced radially from the inner race and a cage disposed radially between the inner race and the outer race. The bearing assembly further includes a rolling element disposed radially between the outer race and the inner race. The rolling element is disposed within the cage for supporting rotation of the shaft. The outer race defines a lubricant passageway configured to direct lubricant toward the cage.Type: GrantFiled: December 17, 2021Date of Patent: December 27, 2022Assignee: BorgWarner Inc.Inventors: Erwin Perry Ellwood, III, Kenneth Richard Bischof, Raj Chandramohanan
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Patent number: 11512609Abstract: A turbomachine includes a first housing member having a first journal bearing portion and a first radial control surface. The turbomachine also includes a second housing member with a second journal bearing portion and a second radial control surface. The second radial control surface has an interference fit with the first radial control surface that radially aligns the second journal bearing portion and the first journal bearing portion along a common axis.Type: GrantFiled: June 30, 2021Date of Patent: November 29, 2022Assignee: GARRETT TRANSPORTATION I INCInventors: Adonis Spathias, LienHuong Ho, Kristian Dullack
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Patent number: 11441607Abstract: Provided is a sliding member for a thrust bearing. The sliding member includes a back-metal layer and a sliding layer, and has a partially annular shape. The sliding layer includes a synthetic resin and has a sliding surface. In a center line region of the sliding layer, the sliding layer has a linear expansion coefficient KS in a direction parallel to a circumferential direction of the sliding member, a linear expansion coefficient KJ in a direction parallel to a radial direction of the sliding member, and a linear expansion coefficient KT in a direction perpendicular to the sliding surface, and the linear expansion coefficients KS, KJ, and KT satisfy the following relations (1) and (2): Relation (1): 1.1?KS/KJ?2; and Relation (2): 1.3?KT/{(KS+KJ)/2}?2.5.Type: GrantFiled: January 27, 2021Date of Patent: September 13, 2022Assignee: DAIDO METAL COMPANY LTD.Inventor: Hideyuki Nakajima
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Patent number: 11441600Abstract: Provided is a sliding member for a journal bearing. The sliding member includes a back-metal layer and a sliding layer, and has a partially cylindrical shape. The sliding layer includes a synthetic resin and has a sliding surface. The sliding layer has a linear expansion coefficient KS in a direction parallel to a circumferential direction of the sliding member, a linear expansion coefficient KJ in a direction parallel to a center axis direction of the sliding member, and a linear expansion coefficient KT in a direction perpendicular to the sliding surface, and the linear expansion coefficients KS, KJ, and KT satisfy the following relations (1) and (2): Relation (1): 1.1?KS/KJ?2; and Relation (2): 1.3?KT/{(KS+KJ)/2}?2.5.Type: GrantFiled: January 27, 2021Date of Patent: September 13, 2022Assignee: DAIDO METAL COMPANY LTD.Inventor: Hideyuki Nakajima
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Patent number: 11261663Abstract: A gate may generally include a gatepost and a plurality of rails pivotally connected to the gatepost and having a plurality of posts hingedly attached to at least one of the plurality of rails. The gate may include a lift system having a translating device in communication with a sprocket, wherein the lift system provides an adjustable force to rotate the plurality of rails from a horizontal position to an upward position. The adjustable force may be provided by a turnbuckle. The gate may include a ground anchor system that allows axial rotation of the plurality of rails about a longitudinal axis of the gatepost.Type: GrantFiled: December 17, 2018Date of Patent: March 1, 2022Assignee: Klimek Entry Gates, Inc.Inventors: Christopher Klimek, Chad Shaffer
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Patent number: 11255272Abstract: An assembly is provided that includes a shaft, a bearing, a stator seal element, a rotor seal element and a shield. The shaft extends along an axis. The bearing supports the shaft and receives lubrication fluid. The stator seal element circumscribes the shaft. The rotor seal element is mounted on the shaft axially between the bearing and the stator seal element. The rotor seal element forms a seal with the stator seal element. The shield substantially prevents the lubrication fluid from traveling axially away from the bearing onto the rotor seal element.Type: GrantFiled: May 28, 2019Date of Patent: February 22, 2022Assignee: Raytheon Technologies CorporationInventor: Denman H. James
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Patent number: 10605306Abstract: A turbocharger, with a turbine a turbine housing and a turbine rotor, with a compressor with a compressor housing and a compressor rotor that is coupled to the turbine rotor via a shaft, with a bearing housing arranged between the turbine housing and the compressor housing, wherein both the turbine housing and also the compressor housing are connected to the bearing housing, with at least one bearing, via which the shaft is mounted in the bearing housing, wherein the respective bearing comprises a bearing bush arranged in the bearing housing, wherein between the bearing bush and the bearing housing a radially outer lubricating gap and between the bearing bush and the shaft a radially inner lubricating gap are formed, wherein the radially outer lubricating gap and the radially inner lubricating gap are suppliable with lubricating oil emanating from an oil supply main line independently of one another.Type: GrantFiled: November 15, 2018Date of Patent: March 31, 2020Assignee: MAN Energy Solutions SEInventors: Sven Brandt, Claudius Wurm, Harald Denkel
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Patent number: 10408086Abstract: Bearing members, such as journal bearings, and turbine assemblies for use in high speed, high horsepower applications (e.g., turbochargers, jet engines, internal combustion engines, blowers, steam turbines, compressors, and pumps) including a rotatable shaft, a compressor wheel coupled to the shaft (e.g., at one end), a turbine wheel spaced from the compressor wheel, the turbine wheel also being coupled to the shaft (e.g., at another end), and at least one bearing member having a superhard bearing surface.Type: GrantFiled: January 22, 2018Date of Patent: September 10, 2019Assignee: US SYNTHETIC CORPORATIONInventor: Jarrett Meier
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Patent number: 10190634Abstract: A turbocharger including a housing and a rotary assembly disposed within the housing and including a turbine wheel and a compressor wheel attached to one another by a shaft. The rotary assembly being subject to aero-load in a lateral direction. A bearing is disposed in the housing and rotatably supports the shaft, the bearing including an inner bearing surface that engages the shaft and an outer bearing surface that engages the housing, the outer bearing surface having a pair of axially extending recessed grooves extending at least partially along the bearing. The pair of axially extending grooves being located perpendicular to the aero-load direction.Type: GrantFiled: July 11, 2017Date of Patent: January 29, 2019Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Fanghui Shi, Dingfeng Deng, Ran Wu, Louis P. Begin, Yuli Huang
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Patent number: 9494189Abstract: A turbocharger for an internal combustion engine includes a bearing housing and a bearing bore defined by the bearing housing. The bearing bore has an annular bearing groove configured to receive a fluid. A journal bearing is disposed within the bore such that the annular bearing groove encircles the journal bearing and feeds the fluid thereto. The turbocharger also includes a rotating assembly having a shaft with a turbine wheel and a compressor wheel. The shaft has a longitudinal axis and is supported by the journal bearing for rotation within the bore about the axis. The annular bearing groove is characterized by a trapezoidal shape in a cross-sectional view of the bearing bore taken along and through the longitudinal axis. The trapezoidal shape is configured to generate Taylor vortices in the fluid for capturing debris carried by the fluid and keeping the debris from being fed to the journal bearing.Type: GrantFiled: October 1, 2014Date of Patent: November 15, 2016Assignee: GM Global Technology Operations LLCInventors: Louis P. Begin, Dingfeng Deng, Ran Wu, Fanghui Shi
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Patent number: 9464666Abstract: A bushing for the force-fitting connection to a force-fitting partner, with a hollow-cylindrical basic body, with the basic body defining a primary axis, with the basic body comprising at least one coupling section with at least one radially extending penetrating opening for a fluidic communication with a fluid section in the force-fitting partner, and with the wall thickness in the coupling section being greater than the wall thickness in the neighboring section of the basic body abutting the coupling section with the basic body showing a track section, extending in the circumferential direction, for supporting a radial guidance of a bearing partner, and a transmission arrangement comprising the bushing.Type: GrantFiled: April 3, 2014Date of Patent: October 11, 2016Assignee: Schaeffler Technologies AG & Co. KGInventors: Andreas Ziegler, Frank Beeck, Frank Schoenstein
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Patent number: 9360395Abstract: A dynamometer test unit for use in dynamometer testing of a vehicle, where the vehicle includes at least a first wheel shaft and at least one first vehicle power source for providing power to the first wheel shaft. The first wheel shaft is, during testing, connected to a dynamometer test unit which includes a first individually controllable dynamometer power source for applying a first power to the first wheel shaft. The dynamometer test unit further includes a second individually controllable dynamometer power source for applying a second power to the first wheel shaft. The first and the second dynamometer power source apply a controllable power to the first wheel shaft during testing. The invention also relates to a dynamometer test system.Type: GrantFiled: October 17, 2011Date of Patent: June 7, 2016Assignee: Rototest International ABInventors: Nils G. Engstrom, Christian Engstrom, Jonny Farnlund
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Patent number: 9353793Abstract: A method and structure improves the dynamic characteristics of a linear roller guideway for precision machine tool, robot or automation equipment by: adding a nonlinear component to the linear roller guideway to provide better dynamic stiffness and damping effects. The nonlinear component has a nonlinear contact characteristic of hardening so that during mounting or in a quick movement of the slide units of the linear roller guideway, the nonlinear component has a relatively lower stiffness to reduce its friction with the rail surface; on the other hand, when bearing a load or during a cutting work, the nonlinear component has a relatively higher stiffness. The nonlinear component also provides a planar contact, overcoming the drawbacks of low damping of point or line contact of the slide units of the nonlinear roller guideway, and enhancing the cutting precision of the machine tool.Type: GrantFiled: February 5, 2015Date of Patent: May 31, 2016Assignee: YEONG CHIN MACHINERY INDUSTRIES CO., LTD.Inventor: Wen-Lung Li
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Patent number: 9212695Abstract: A linear motion bearing assembly includes (a) first and second interlocking bearing blocks, each having an inner wall which together define an axial space; and (b) a load bearing assembly disposed within the axial space of the interlocking bearing blocks, said load bearing assembly including first and second joinable sleeves, and at least one first load bearing structure disposed within the joined sleeves which includes an inner surface with ball bearings, and at least one second load bearing structure disposed within the joined sleeves which includes an inner low friction surface for facilitating sliding contact with a shaft, but including no ball bearings, the inner surfaces of said first and second load bearing structures together defining an axial channel through which the shaft is disposed and linearly and/or rotatably movable therein.Type: GrantFiled: May 31, 2012Date of Patent: December 15, 2015Assignee: Thomson Industries Inc.Inventor: Alison Ng
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Publication number: 20140334752Abstract: A rotary connection for a work machine, such as a crane, includes a rotational axis, an inner bearing ring, an outer bearing ring and at least three bearing body ring arrangements arranged between the bearing rings with a plurality of respective bearing bodies. At least one of the bearing body ring arrangements is configured to at least partially withstand forces directed in the radial direction to the rotational axis. At least two of the bearing body ring arrangements are configured to at least partially withstand forces directed parallel to the rotational axis and are arranged adjacent to and spaced apart from one another along the rotational axis. The at least two bearing body ring arrangements are configured to at least partially withstand forces directed parallel to the rotational axis in each case establish a direction of action and are arranged spaced apart from one another along the direction of action.Type: ApplicationFiled: September 27, 2012Publication date: November 13, 2014Inventors: Alfons Weckbecker, Ralf Pein, Volker Noll, Frank Schnittker
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Patent number: 8827561Abstract: A wind turbine includes a tower (8), a nacelle (3) being connected to the tower (8), and a rotor (2) having a rotor hub (6) and a number of rotor blades (7) extending radially outwards from the rotor hub (6). The nacelle (3) includes a hollow shaft (10) and the rotor hub (6) includes a support member (11) which is connected to the hollow shaft (10) by two tapered roller bearings (14, 15) so as to be rotatable about an axis of rotation (5). The tapered roller bearings (14, 15) each have a bearing width (w) which is defined in a direction parallel to the axis of rotation (5). The tapered roller bearings (14, 15) are arranged at a distance (d) from one another which is not greater than the bearing width (w) of the tapered roller bearings (14, 15).Type: GrantFiled: December 8, 2010Date of Patent: September 9, 2014Assignee: Lagerwey Wind B.V.Inventors: Hendrik Lambertus Lagerweij, Albertus Waaijenberg, Aart van de Pol, André Pubanz
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Patent number: 8794847Abstract: A bearing assembly includes an outer ring having an inner circumferential surface and a generally annular recess extending radially outwardly from the inner surface. An inner ring is disposed at least partially within the outer ring so as to be rotatable about a central axis, the inner ring having an outer circumferential surface spaced radially inwardly from the outer ring inner surface and at least one integral shoulder extending radially outwardly from the outer surface so as to be disposed at least partially within the outer ring recess. The shoulder is engageable with the outer ring when the inner ring is subjected to an axial force so as to substantially prevent axial displacement of the inner ring relative to the outer ring. Preferably, a plurality of rolling elements are disposed between and rotatably couple the inner and outer rings.Type: GrantFiled: May 11, 2012Date of Patent: August 5, 2014Assignee: Aktiebolaget SKFInventors: Herve Dondaine, David Sabatier, Anastazi Sarigiannis, Gabriel Michel
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Patent number: 8678655Abstract: A bearing assembly for a first part that rotates with respect to a second part may include a slewing bearing having an axis of rotation and inner and outer races concentric with the axis of rotation. The inner race may be fixed to the first part and the outer race may be fixed to the second part. An inner, annular catch ring may be fixed to and adjacent to a lower surface of the inner race. An outer, annular catch ring may be fixed to and interposed between a lower surface of the outer race and the second part. A portion of the outer catch ring may be disposed below and adjacent to the lower surface of the inner race.Type: GrantFiled: April 11, 2012Date of Patent: March 25, 2014Assignee: The United States of America as Represented by the Secretary of the ArmyInventors: Christopher Mougeotte, David Geissler, Michael Hollis, Nicholas Stolten, Justin John, Chris Cammack, Thomas J. Kiel
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Patent number: 8636487Abstract: A hydraulic pump is disclosed. The hydraulic pump may have a first fluid section (12), a second fluid section (14), and an input shaft (16) extending through the first fluid section and the second fluid section. The input shaft may have a first end (44), a second end (46), and a mid-portion (48) located between the first and second ends. The hydraulic pump may also have a first bearing (30) configured to continuously support the first end of the input shaft, and a second bearing (32) configured to continuously support the second end of the input shaft. The hydraulic pump may further have a third bearing (56) configured to intermittently support the mid-portion (58) of the input shaft.Type: GrantFiled: April 26, 2007Date of Patent: January 28, 2014Assignee: Perkins Engines Company LimitedInventor: Scott Laurence Mitchell
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Publication number: 20130284459Abstract: An apparatus including a first housing defining an opening and a bearing housing disposed in the opening so that movement of at least a portion of the bearing housing within the first housing and along a first axis is permitted, the bearing housing defining first and second bearing surfaces, the first and second bearing surfaces being spaced apart along a second axis to prevent movement of the bearing housing within the first housing and along the second axis, the second axis being perpendicular to the first axis.Type: ApplicationFiled: April 26, 2013Publication date: October 31, 2013Inventors: Preston WEINTRAUB, W. Randall SLOCUM
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Publication number: 20130156552Abstract: An assembly for a turbocharger and methods for creating the same are disclosed. Such assembly for a turbocharger includes a bearing housing having first and second bore ends, a housing cavity, and a bearing assembly disposed within the housing cavity. The bearing assembly includes an annular rotating journal positioned at the first bore end and first and second angular contact bearings positioned at the second bore end, where the first and second angular contact bearings resist axial loads in opposite directions. The bearing housing and bearing assembly are configured to receive a shaft and together dampen axial and radial loads in all directions from the shaft.Type: ApplicationFiled: December 14, 2011Publication date: June 20, 2013Applicant: Precision Turbo & Engine Rebuilders, Inc.Inventor: Daniel J. Barlog
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Publication number: 20130147295Abstract: A radial bearing is received in and is fixed to a bearing receiving portion of a yoke housing, which includes large and small diameter parts, to rotatably support a rotatable shaft. A thrust ball and a thrust plate are received in the bearing receiving portion on an axial side of the radial bearing, which is opposite from the rotatable shaft. The large diameter part receives and holds the radial bearing. The small diameter part holds the thrust ball. The thrust plate is held by an axial end area of the small diameter part.Type: ApplicationFiled: November 8, 2012Publication date: June 13, 2013Applicant: ASMO CO., LTD.Inventor: ASMO CO., LTD.
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Patent number: 8459872Abstract: A bearing is provided having a first race, a second race and one or more rolling elements. The bearing includes an alternate load path for extreme loads, and the alternate load path is formed between the first race and the second race. At least a portion of the extreme loads is diverted away from the rolling elements.Type: GrantFiled: October 10, 2008Date of Patent: June 11, 2013Assignee: General Electric CompanyInventors: Jacob J. Nies, Bharat S. Bagepalli
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Patent number: 8376616Abstract: In a downhole motor bearing section having a cylindrical mandrel rotatably disposed within a cylindrical housing, a bi-directional thrust bearing is disposed within a four-shouldered annular containment chamber formed partially into the inner cylindrical wall of the housing and partially into the outer cylindrical wall of the mandrel. Under on-bottom loading conditions, thrust loads are transferred through the thrust bearing by the upper shoulder of the housing and the lower shoulder of the mandrel. The radial widths of these two shoulders are both symmetrical about the centerline of the thrust bearing such that on-bottom thrust loads are transferred non-eccentrically to the thrust bearing, thereby avoiding twisting loads on the thrust bearing races, increasing the effective on-bottom load capacity of the thrust bearing and extending its service life.Type: GrantFiled: March 10, 2010Date of Patent: February 19, 2013Assignee: National Oilwell Varco, L.P.Inventor: Frederick William Pheasey
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Publication number: 20130038182Abstract: The purpose of the invention is to provide an inverter-driven dynamo electric machine and system for the same having high reliability and high efficiency such that even in the case of inverter pulse voltages having high dv/dt, generation of shaft voltages and generation of shaft currents causing electric corrosion of a bearing with the generation of the shaft voltages are suppressed, thereby keeping the bearing free of electric corrosion. The purpose of the invention is achieved by the following method. That is, the purpose is achieved by an inverter-driven dynamo electric machine and system for the same including at least one machine support bearing which supports a shaft of a rotor, and one electric discharge bearing which discharges the voltage generated in the shaft of the rotor, wherein a bearing having a lower dielectric breakdown voltage between an inner ring and an outer ring than that of the machine support bearing is used as the electric discharge bearing.Type: ApplicationFiled: March 17, 2010Publication date: February 14, 2013Applicant: HITACHI, LTD.Inventors: Koji Obata, Takeo Konno, Keisuke Abe, Norinaga Suzuki
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Patent number: 8221000Abstract: A bearing for a rolling mill roll that has a roll neck, the bearing including a neck sleeve fitted onto the roll neck, a chock, a bearing bush supported in the chock, and a load-bearing lubricating film provided between the neck sleeve and the bearing bush. The roll neck has a step at a transition to an undercut region that defines part of a keyway groove in an axial end face of the roll neck, a remaining part of the keyway groove being formed in an axial end of the neck sleeve. A feather key is provided in the keyway groove. The feather key and the keyway groove are arranged adjacent to, without passing through, a Rötscher line extending between the step of the roll neck and an outer axial edge of the bearing bush. The feather key has a radial extension that is greater than an axial extension.Type: GrantFiled: February 27, 2007Date of Patent: July 17, 2012Assignee: SMS Siemag AktiengesellschaftInventors: Karl Keller, Konrad Roeingh, Kurt Scheffe
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Publication number: 20120114274Abstract: In a downhole motor bearing section having a cylindrical mandrel rotatably disposed within a cylindrical housing, a bi-directional thrust bearing is disposed within a four-shouldered annular containment chamber formed partially into the inner cylindrical wall of the housing and partially into the outer cylindrical wall of the mandrel. Under on-bottom loading conditions, thrust loads are transferred through the thrust bearing by the upper shoulder of the housing and the lower shoulder of the mandrel. The radial widths of these two shoulders are both symmetrical about the centerline of the thrust bearing such that on-bottom thrust loads are transferred non-eccentrically to the thrust bearing, thereby avoiding twisting loads on the thrust bearing races, increasing the effective on-bottom load capacity of the thrust bearing and extending its service life.Type: ApplicationFiled: March 10, 2010Publication date: May 10, 2012Applicant: NATIONAL OILWELL VARCO,L.P.Inventor: Frederick William Peasey
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Patent number: 8047750Abstract: A bearing unit capable of withstanding a large axial force based on a simple structure including: a bearing 10 having an internal ring 13 fitted to an inside member 2, an outer ring 14 fitted to an outside member 6, lots of rolling elements 15 disposed between the outer ring 14 and the inner ring 13; and a transmitting direction shifting means A transmitting an axial force F from the inner ring 13 to the outside member 6 when the axial force F transmitted from the inside member 2 to the internal ring 13 exceeds a predetermined value or above, and a main spindle device of a machine tool, which is provided with the bearing unit, are provided.Type: GrantFiled: November 8, 2007Date of Patent: November 1, 2011Assignee: Mori Seiki Co., Ltd.Inventors: Akihiro Mochizuki, Hidenori Saraie, Kazuya Fujioka, Takahiro Nishiki
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Patent number: 8021050Abstract: A bearing arrangement having first and second components located for relative operational movement by a respective bearing. The bearing has a bearing element including a pack of resiliently flexible bristles or leaves for transmitting force between the components thereby locally to provide a relative kinematic constraint on at least one degree of freedom of the components during the relative operational movement.Type: GrantFiled: August 11, 2009Date of Patent: September 20, 2011Assignee: Rolls-Royce PLCInventor: John L. Gibbons
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Publication number: 20100124388Abstract: A composite bearing member 10 includes: a bearing sliding material 20 whose surface contacts a rotating portion; a bearing base material 30 made of a material different from a material constituting the bearing sliding material 20; and a joining layer 40 joining the bearing sliding material 20 and the bearing base material 30. Further, the bearing sliding material 20 has a sliding layer 50 sliding the rotating portion on a surface. Furthermore, the bearing sliding material 20 has, between the sliding layer 50 and the joining layer 40, a composition graded layer 60 which dispersedly contains the same metal material as a metal material constituting the joining layer 40 and in which a content of the metal material is increased toward the joining layer 40.Type: ApplicationFiled: November 18, 2009Publication date: May 20, 2010Inventors: Than Trong Long, Yuuji Hisazato, Satoshi Namba, Kazuma Mukai
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Publication number: 20090220360Abstract: A cooling fan (1) includes a fan housing (10), a stator (20), a rotor (30) and a bearing assembly (40). A tube (111) extends upwardly from a central portion of the fan housing. The stator is mounted around the tube. The bearing assembly includes a ball bearing (333) and a sleeve bearing (335) received in two ends of the tube, respectively. The rotor has a shaft (336) extending into and roratably supported by the bearing assembly. An elastic element (332) is arranged on the ball bearing to provide a pressing force on the ball bearing toward the sleeve bearing. An oil retaining element (339) is arranged around a bottom end of the shaft and spaced from the shaft. The oil retaining element is attached to the sleeve bearing to provide oil for the sleeve bearing.Type: ApplicationFiled: March 27, 2008Publication date: September 3, 2009Applicants: FU ZHUN PRECISION INDUSTRY (SHEN ZHEN) CO., LTD., FOXCONN TECHNOLOGY CO., LTD.Inventors: YONG-KANG ZHANG, ZHI-YA YANG, YING-LIANG LI
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Publication number: 20090060405Abstract: A rotary bearing system that supports a shaft for rotating machinery in a housing comprises: at least one stationary rotary bearing mounted in the housing for supporting a respective journal of the shaft in a desired axial and radial alignment; at least one slidable rotary bearing, with an outer surface mounted within a respective inner support surface of the housing to form a respective linear bearing such that each slidable bearing may slide axially along the inner support surface of the housing, for supporting another respective journal of the shaft with the desired radial alignment; and at least one layer of a crystalline material that exhibits a high degree of basal cleavage bonded to at least one of the linear bearing surfaces; wherein each layer of crystalline material allows each slidable rotary bearing to slide axially along each respective linear bearing to compensate for differences in the coefficient of expansion of the housing and the shaft so as to prevent the bearing system from binding due toType: ApplicationFiled: August 31, 2007Publication date: March 5, 2009Inventors: Mark N. Shatz, Eric J. Alexander, Gordon F. Jewess, James J. McLaughlin
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Publication number: 20090028731Abstract: A ball bearing (1) has an inner race (2) and an outer race (3). In order to prevent the rotating parts from being damaged when the bearing assembly fails, the bearing has emergency bearing surfaces (14, 15) which are concentric to the rotational axis (6) and of which one is a part of the rotating bearing race and the other is a part of the fixed bearing race. During normal operation, the emergency bearing surfaces (14, 15) are situated opposite one another with a relatively narrow gap (24) therebetween. But, in the event of failure, the surfaces (14, 15) engage and function as emergency bearing surfaces.Type: ApplicationFiled: August 18, 2008Publication date: January 29, 2009Applicant: LEYBOLD VAKUUM GmbHInventors: Heinrich Englander, Karl-Heinz Volker, Wolfgang Schulz
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Patent number: 7416201Abstract: A single wheel unit adapted to be mounted on a vehicle body (11) comprising: a wheel frame supporting a suspension mechanism (15) and a wheel assembly mounted on the suspension mechanism (15), and steering means mounted between the wheel frame and vehicle body (11) for pivoting the wheel frame relative to the vehicle body (11) so as to steer a vehicle, wherein the steering means includes two steering components (30) pivotally attached (32, 33) one at each of the leading and trailing portions of the wheel frame and capable of being actuated to independently displace the leading and trailing portions laterally of the vehicle body (11).Type: GrantFiled: January 28, 2004Date of Patent: August 26, 2008Assignee: Steerable Wheel Systems Pty. Ltd.Inventor: Garth Barrington Davey
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Patent number: 7338379Abstract: An inner tubular wall is concentrically located inside an outer tubular wall to form an annular space therebetween. A bearing is retained within the annular space. The bearing can include a pair of precision angular contact bearings, the bearing may also include an axial sleeve bearing. A frangible element such as an annular shear groove is associated with one of the outer tubular wall and the inner tubular wall. Separation occurs at the frangible element and the bearing supports the inner tubular wall member and the outer tubular wall member for rotation relative to each other upon the coupling assembly experiencing a shear event. In addition, the angular contact bearings may reduce any bending moments that might otherwise impact upon the frangible element during normal operation. The frangible element may be treated, for example, by shot-peening or coating to reduce deterioration of the frangible element during normal operation.Type: GrantFiled: June 30, 2005Date of Patent: March 4, 2008Assignee: Emerson Power Transmission Manufacturing L.P.Inventors: Jon R. Mancuso, Joseph P. Corcoran, Tara H. Howland
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Patent number: 7314100Abstract: System for coupling two tubular ends for use in a well bore, the system comprising a first tubular end, a second tubular end for inserting into the first tubular end in axial alignment thereof, thereby forming an annular space between the first tubular end and the second tubular end, and a connecting assembly for axially coupling the first tubular end with the second tubular end whereby the connecting assembly at least partly reaches in the annular space.Type: GrantFiled: December 12, 2003Date of Patent: January 1, 2008Assignee: Shell Oil CompanyInventor: Serge Mathieu Roggeband
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Patent number: 7300209Abstract: Disclosed is an aerodynamic bearing assembly for a spindle motor for hard disk drives, in which a hub of the spindle motor is pivoted in both radial and thrust directions by the ball bearing, which directly contacts the center of the hub, to perform rotation according to the rotational principle of a whirligig, and is subject to the thrust load through the aerodynamic bearing assembly with air groove(s) without being in contact with it, so that the hub maintains a rotational center without mechanical contact resulting in noise and starting failure of the assembly during an initial starting (low-speed rotation). The assembly includes air grooves, the air groove generating aerodynamic pressure between the hub and the aerodynamic bearing while the hub rotates.Type: GrantFiled: November 28, 2002Date of Patent: November 27, 2007Assignee: G & W Technologies Inc.Inventors: Sang Uk Kim, Beom Young Myung
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Patent number: 7178984Abstract: A bearing arrangement for supporting a universal joint trunnion in an outer cup includes a radial bearing having cylindrical rolling elements disposed between the trunnion and the outer cup, and a resistance member made of a material to allow elastic deformation and bearing upon a confronting surface area of an end surface of the trunnion. The resistance member and the trunnion are hereby so configured either alone or in combination as to form a large lubricant reservoir. Disposed at a distance to the end surface of the trunnion is a stop member to define an axial gap, whereby the stop member inhibits an axial movement of the trunnion after the trunnion has moved in axial direction to close the gap.Type: GrantFiled: March 12, 2004Date of Patent: February 20, 2007Assignee: INA-Schaeffler KGInventor: Martin Kruppa
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Patent number: 6827497Abstract: A free-wheel hub assembly includes an axle extending through a hub and having an annular axle flange projecting radially and outwardly therefrom into a right recess defined by a right end of the hub. A self-lubricating bearing is slidably sleeved on the axle flange. A sprocket-mounting member is sleeved on the axle flange, and has an annular coupling end which extends into the right recess and which is in sliding contact with the self-lubricating bearing. An inner bearing is sleeved on the axle and abuts against one end of the axle flange. An outer bearing is sleeved on the axle and abuts against the other end of the axle flange. A ratchet unit is coupled to the sprocket-mounting member and the hub.Type: GrantFiled: January 15, 2003Date of Patent: December 7, 2004Assignee: Kung Teng Industry Co., Ltd.Inventor: Hubert Chen
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Patent number: 6828708Abstract: A motor device suppressed in tilt of the rotor shaft and improved in resistance to rotational vibration without enlarging the thickness direction. A stator plate 1 supports a radial bearing 3 and thrust bearing 5 through an auxiliary support plate 15. The auxiliary support plate 15 has a bent flange 15a at its outer circumference, has the radial bearing 3 fastened to the region inside the flange 15a, and has the thrust bearing 5 placed on the inside region so as to surround the same. The auxiliary support plate 15 is made to fit in the stator plate 1, while the flange 15a is supported on the top surface of the stator plate 1. The rotor plate 9 has a rotor shaft 11 and drive magnet 13. The rotor shaft 11 is axially supported by the radial bearing 3 and abuts against the thrust bearing 5.Type: GrantFiled: November 26, 2002Date of Patent: December 7, 2004Assignees: Sanyo Electric Co., Ltd., Kumagaya Seimitsu Co., Ltd.Inventors: Hiroshi Ito, Tetsuya Haruyama, Jyunichi Kawashima
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Patent number: 6712515Abstract: A bearing is presented having a multiplicity of rotating sleeves. A bushing is connected to one of the multiplicity of rotating sleeves. At least one bearing set is connected to the multiplicity of rotating sleeves. Also, a bearing is presented having a multiplicity of rotating sleeves. At least two bearing sets are connected to the multiplicity of rotating sleeves. Another bearing is presented having a multiplicity of rotating sleeves. At least two bearing sets are connected to the multiplicity of rotating sleeves. A bushing is connected with one of the rotating sleeves.Type: GrantFiled: January 2, 2002Date of Patent: March 30, 2004Assignee: Intel CorporationInventors: Robert J. Fite, Donovan D. Van Sleet, Casey R. Winkel, Tomm V. Aldridge
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Patent number: 6679501Abstract: A motor or bearing which incorporates the use of a capillary seal adjacent a bearing race between the shaft and surrounding hub or housing. The seal may take a plurality of forms, including a straight capillary seal; a seal formed between the housing and a seal ball having different radius of curvatures (preferably with the housing internal surface having a larger radius); or a centrifugal capillary seal comprising a male cone supported on a fixed or rotating shaft, and a female cone supported on a housing. The use of a capillary seal rather than ferrofluid seal should also provide a reduction in resistance across the seal gap compared to a ferrofluid seal.Type: GrantFiled: January 21, 2000Date of Patent: January 20, 2004Assignee: Seagate Technology LLCInventors: Robert M. Pelstring, Raquib U. Khan, Klaus Kloeppel, Alan L. Grantz, Norbert S. Parsoneault, Marten F. Byl, Hans Leuthold
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Patent number: 6632022Abstract: A coupling structure for bearing and bushing. The structure includes a ball bearing, a washer and an oil-retained bearing housed sequentially in a housing chamber of a bushing. The housing chamber has one end formed a lip opening for anchoring the bearings and the washer such that the bearings and the washer are allowed to attain precise positioning and concentricity, with reduced vibration, and prevent lubrication oil of the oil-retained bearing from flowing to the ball bearing to effectively minimize noise and vibration.Type: GrantFiled: August 23, 2001Date of Patent: October 14, 2003Inventor: Bill Lee
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Publication number: 20030077011Abstract: A single journal bearing replaces three bearings in applications where one arm is rotary supported by the inner diameter bearing surface of the journal bearing and another arm is rotary supported by the outer diameter of the bearing surface and the journal bearing is fixed so that it cannot rotate. In a V-shaped piston engine the female piston rod is rotary supported to the inner diameter of the journal bearing for driving the shaft crank journal affixed to the fly wheel and the male piston rod is rotary supported for articulated motion to the outer diameter of the journal bearing. In another embodiment a roller bearing is mounted withing said journal bearing and serves to rotary support the shaft crank journal of the fly wheel.Type: ApplicationFiled: October 19, 2001Publication date: April 24, 2003Inventor: Roy A. Hall
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Publication number: 20030039418Abstract: A coupling structure for bearing and bushing comprises a ball bearing, a washer and an oil-retained bearing housed sequentially in a housing chamber of a bushing. The housing chamber has one end formed a lip opening for anchoring the bearings and the washer such that the bearings and the washer are allowed to attain precise positioning and concentricity, and reduced vibration, and prevent lubrication oil of the oil-retained bearing from flowing to the ball bearing thereby effectively prevent noise and vibration from taking place.Type: ApplicationFiled: August 23, 2001Publication date: February 27, 2003Inventor: Bill Lee
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Patent number: 6506038Abstract: A screw compressor includes a suction end, a discharge end, first and second rotors mounted for rotation between the suction end and the discharge end, and a discharge housing at the discharge end. The discharge housing surrounds a portion of the first and second rotors and includes an end surface. The compressor further includes a first axial bearing supporting the first rotor, and a wear-preventing member sandwiched between the end surface of the discharge housing and the first axial bearing such that no portion of the first axial bearing contacts the end surface. The screw compressor further includes a first radial bearing in the discharge housing for supporting the first rotor. The wear-preventing member includes a face abutting the end surface of the discharge housing and abutting at least a portion of the first radial bearing to retain the first radial bearing in the discharge housing.Type: GrantFiled: August 15, 2001Date of Patent: January 14, 2003Assignee: Thermo King CorporationInventors: Lars Ivan Sjoholm, Lee John Erickson