Fluid Bearing Patents (Class 384/100)
  • Patent number: 10428691
    Abstract: In an exhaust gas turbocharger, comprising a first radial bearing and a second radial bearing configured for the radial support of a shaft of the exhaust gas turbocharger, wherein the first radial bearing comprises a bearing axis extending in alignment with the bearing axis of the second radial bearing which is arranged spaced from the first radial bearing, a third radial bearing with a third bearing axis, which is extends parallel to, but at a distance (E) from, the first bearing axis and the second bearing axis is arranged between the first and second radial bearings.
    Type: Grant
    Filed: June 4, 2016
    Date of Patent: October 1, 2019
    Assignee: IHI CHARGING SYSTEMS INTERNATIONAL GMBH
    Inventors: Wolfgang Koehl, Richard Markert, Martin Kreschel
  • Patent number: 10415465
    Abstract: An auxiliary compressor for a gas turbine engine is disclosed. The auxiliary compressor includes a first axial rotor, a second axial rotor positioned downstream of the first axial rotor, and a centrifugal impeller positioned intermediate the first axial rotor and the second axial rotor and operably coupled to the first axial rotor.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: September 17, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Matthew E Bintz, Enzo DiBenedetto
  • Patent number: 10408267
    Abstract: A tapered roller bearing (31a) has a plurality of retainer segments (11a, 11d) each having a pocket to house a tapered roller (34a), and arranged so as to be continuously lined with each other in a circumferential direction between an outer ring (32a) and an inner ring (33a). The retainer segment (11a, 11d) is formed of a resin containing a filler material to lower a thermal linear expansion coefficient. In addition, a clearance (39a) is provided between the first retainer segment (11a) and the last retainer segment (11d) after the plurality of retainer segments (11a, 11d) have been arranged in the circumferential direction without providing any clearance. Here a circumferential range (R) of the clearance (39a) is larger than 0.075% of a circumference of a circle passing through a center of the retainer segment (11a, 11d) and smaller than 0.12% thereof at room temperature.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: September 10, 2019
    Assignee: NTN CORPORATION
    Inventors: Tatsuya Omoto, Eiichi Nakamizo, Tomoya Sakaguchi
  • Patent number: 10363679
    Abstract: A method for lubricating a radial bearing of a food cutter assembly is disclosed. The method can include receiving a supply of water at a housing for rotationally mounting a spindle body having a rotational axis, where the housing includes a radial bearing proximate to a thrust disc of the spindle body. The thrust disc can include opposing surfaces extending radially from the rotational axis of the spindle body and a circumferential surface between the opposing surfaces. The water can be directed through fluid passages extending from a port in the housing through the radial bearing to the spindle body and across the opposing surfaces and the circumferential surface to the spindle body. The spindle body may be rotated while the water is directed through the fluid passages to create a water film between the housing and the spindle body that reduces friction between the housing and the spindle body.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: July 30, 2019
    Assignee: Lamb Weston, Inc.
    Inventors: John C. Julian, Christopher M. Smith, Mark A. Fow
  • Patent number: 10309455
    Abstract: A squeeze film damper bearing device includes an inner race that is fitted around an outer periphery of a rotating shaft, an outer race that is supported on an inner periphery of a bearing retaining member via an annular space, a plurality of rolling bodies that are disposed between the inner race and the outer race, and an oil supply source that supplies oil to the annular space via an oil passage so as to form a squeeze film. The device further includes an open/close valve that opens and closes the oil passage. When a rotational speed of the rotating shaft reaches a predetermined rotational speed, the open/close valve is controlled so as to change oil pressure of the squeeze film, thus changing vibration characteristics of the rotating shaft.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: June 4, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Shinichi Obara, Atsushi Yamazaki
  • Patent number: 10302129
    Abstract: A linear guide includes an elongate guide body and a bearing cage, on the inner sides of which fluid pressure bearings are provided. The bearing cage moves along the guide body via the bearings. The bearing cage includes at least three interconnected plates. The plates each have an inner surface facing the guide body, an outer surface facing away from the guide body and side surfaces between the inner and the outer surface. Each plate is connected to a first other plate in a first end region and connected to a second other plate in an opposite second end region. For each of the plates: the first other plate, with its inner surface, abuts against a side surface of the considered plate, while the considered plate, with its inner surface, abuts against a side surface of the second other plate in the second end region of the considered plate.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: May 28, 2019
    Assignee: Carl Zeiss Industrielle Messtechnik GmbH
    Inventor: Christof Poglitsch
  • Patent number: 10267359
    Abstract: An apparatus is provided including a shaft, wherein the shaft is stationary. A rotatable component is configured to rotate with respect to the shaft. A fluid is operable to flow between the shaft and the rotatable component. A limiter is at a first axial end of the shaft, and a cup is at a second axial end of the shaft. An axially extending grooved region is between the limiter and the rotatable component.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: April 23, 2019
    Assignee: Seagate Technology LLC
    Inventors: Alan Lyndon Grantz, Lynn Bich-Quy Le, Klaus Diete Kloeppel
  • Patent number: 10233778
    Abstract: A bearing assembly is provided. The bearing assembly includes an inner race configured to couple to a shaft, an outer race disposed around the inner race, and a housing disposed around the outer race. The housing and the outer race define an annulus and a buffer region, and the buffer region defines an axial boundary of the annulus.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: March 19, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Daniel L. Gysling, Gregory M. Savela, John M. Feiereisen, Robert J. Morris
  • Patent number: 10215223
    Abstract: A non-contact bearing is provided. In a suspended state, the non-contact bearing is disposed with a predetermined spacing to a first guide surface. The non-contact bearing includes: a bearing body and a micro electro mechanical layer. The bearing body includes a second guide surface, wherein the second guide surface is opposite to the first guide surface. The micro electro mechanical layer is disposed on the second guide surface, and includes at least one micro sensor and/or at least one micro actuator.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: February 26, 2019
    Assignee: METAL INDUSTRIES RESEARCH&DEVELOPMENT CENTRE
    Inventor: Kuo-Yu Chien
  • Patent number: 10192579
    Abstract: In certain embodiments, a motor includes a shaft positioned adjacent a sleeve for relative rotation. The sleeve includes a first radial recirculation channel. The shaft and sleeve form first and second gaps. The first gap is configured to form a pump seal, is positioned above the first radial recirculation channel, and has a width measured between the shaft and sleeve. The second gap is configured to form a journal bearing, is positioned below the first radial recirculation channel, and has a width measured between the shaft and sleeve. The width of the first gap is greater than the width of the second gap.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: January 29, 2019
    Assignee: Seagate Technology LLC
    Inventors: Jeffry A Le Blanc, Troy M Herndon, Robert A Nottingham
  • Patent number: 10161447
    Abstract: A bearing structure includes: a shaft; an oil-impregnated bearing that supports the shaft to be rotatable and includes a first sintered metal material having a first density; a bearing holder that supports an outer circumferential surface of the oil-impregnated bearing; and a seal member that is provided at an opening of the bearing holder, wherein the shaft is provided with an annular groove having a side surface portion that has an outer diameter that decreases as the side surface portion separates away from one end surface of the oil-impregnated bearing, and wherein the seal member includes a second sintered metal material having a second density that is lower than the first density of the first sintered metal material.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: December 25, 2018
    Assignee: Minebea Co., Ltd.
    Inventors: Nobuo Takeuchi, Masayuki Iijima, Tatsuya Ide
  • Patent number: 10151052
    Abstract: Disclosed is a yarn management device in a yarn treatment line downstream of a crimping box and upstream of a thermofixing means for crimping, said device including a fixed support and at least one axial drum positioned upstream of the thermofixing means. In some cases, the inlet of the crimping box is formed by one or more crimping rollers for feeding at least one yarn into the crimping box. The drum is traversed by a yarn in the crimping box and mounted on the fixed support of the device so as to perform a substantially axial rotation, allowing the generation of at least one false twist on the treated yarns.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: December 11, 2018
    Assignee: Superba S.A.S.
    Inventor: Philippe Massotte
  • Patent number: 10100873
    Abstract: A bushing is provided for adjusting to differences in diameter between concentric elements of an assembly. The bushing may be provided with a plurality of leaf springs coupled to one another to form parts of a wall. The bushing wall may have a first contact face and a second contact face opposite the first contact face. The bushing wall may also be configured to be positioned in a generally annular shape. Each of the leaf springs forming part of the bushing wall may be radially deflectable relative to each of the other leaf springs in order to self-align the bushing by the resilient response of each leaf spring.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: October 16, 2018
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: James Philip Cooper, Jack E. Barry, Joseph Washnock, Dale Killins, Mark Eubank, Jennifer Laz, John Crossman
  • Patent number: 10082181
    Abstract: A cooling sleeve for a bearing as well as a corresponding bearing, the cooling sleeve including a radial flange having a central passage opening, in which a bearing sleeve may be accommodated, in particular with the aid of a press-fit. In order to keep a mechanical stress at a low level, slits extending radially outwardly originate from the central passage opening.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: September 25, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Simon Hager, Roger Tresch, Werner Stieger, Rolf Boller
  • Patent number: 10065287
    Abstract: The positioning of a cylindrical workpiece (that has to be machined by grinding) can be performed particularly precisely if the workpiece abuts to at least one, preferably two, static supporting elements and is fixed in a collet of a spindle, which allows a wobble compensation as well as a radial displacement of the spindle axis relative to the longitudinal axis of the workpiece.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: September 4, 2018
    Assignee: ISOG TECHNOLOGY GMBH
    Inventors: Günther Straßer, Adolf Feuchthuber, Reinhard Endres
  • Patent number: 10030699
    Abstract: An aerostatic bearing includes a base having a foundation layer and a plurality of ventilation bodies protruding from the foundation layer, the ventilation bodies being made of a porous material; and a sealing layer covering the base and revealing at least one of the ventilation bodies.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: July 24, 2018
    Assignee: METAL INDUSTRIES RESEARCH & DEVELOPMENT CENTRE
    Inventors: Tsai-Fa Chen, Kuo-Yu Chien
  • Patent number: 9989091
    Abstract: Provided is a fluid dynamic bearing device (1) including a rotary body (2A), a bearing member (22) (sleeve portion) made of a sintered metal arranged on the rotary body (2A), having end surfaces (22b, 22c), a thrust bearing gap formed by a lower end surface (22c) of the bearing member (22), filled with lubricating oil (11), and a thrust dynamic pressure generating portion (B). A dynamic pressure generating action is caused in the lubricating oil in the thrust bearing gap along with rotation of the rotary body (2A) to support the rotary body (2A) in one thrust direction in a non-contact manner. The bearing member (22) has an oil permeability of 4% or more with respect to a mass flow rate of the lubricating oil (11) flowing along the thrust dynamic pressure generating portion (B) during the rotation of the rotary body (2A).
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: June 5, 2018
    Assignee: NTN CORPORATION
    Inventors: Shinji Komatsubara, Tetsuya Kurimura, Yasuhiro Yamamoto
  • Patent number: 9932975
    Abstract: A compressor includes a plurality of gas bearing conduits and a plurality of gas bearing control valves. Each gas bearing control valve of the plurality of gas bearing control valves is coupled to a respective one of the plurality of gas bearing conduits. The gas bearing control valves are configured for permitting fluid flow through the gas bearing conduits when a piston of the compressor is positioned adjacent the gas bearing conduits in a chamber of the compressor.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: April 3, 2018
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: Aditya Bhakta, Bhaskar Tamma
  • Patent number: 9920790
    Abstract: The present invention discloses an active airbearing device, including a airbearing body, a gas film active adjusting unit, a support body detection unit and a drive control unit, wherein the support body detection device measures a state of airbearing, the drive control system generates a control signal according to a detection signal, drives and controls the gas film active adjusting device to generate an active action, and dynamically adjusts the form of gas films on a airbearing surface, so as to dynamically adjust pressure distribution of gaps between the gas films of the airbearing device, thereby improving dynamic stiffness characteristics of the airbearing.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: March 20, 2018
    Assignee: Huazhong University of Science and Technology
    Inventors: Wei Jiang, Xuedong Chen, Xin Luo, Lizhan Zeng
  • Patent number: 9903415
    Abstract: A motor includes a shaft, a rotor shell, a bushing, a bearing, and a thrust plate. The rotor shell is connected with the shaft. The bushing has an accommodating space. The bearing is disposed in the accommodating space, and the shaft is disposed through the bearing. The thrust plate is connected with the shaft, and is disposed between a bottom of the accommodating space and a bottom of the bearing. At least one surface of the thrust plate is formed with a plurality of grooves tapering off from an edge to a center.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: February 27, 2018
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Cheng-Hsien Yeh, Chih-Wei Chan, Chao-Wen Lu
  • Patent number: 9835196
    Abstract: A method for operating a rotating machinery comprising a rotor, a rotor shaft, and at least one journal bearing supporting the rotor shaft is disclosed. The bearing comprises a bearing housing, a bearing surface in the bearing housing, a sleeve torsionally and axially fitted on the shaft, and a lubrication oil film filling a clearance between the outer surface of the sleeve and the bearing surface. The method comprises the step of modifying the clearance by modifying a radial dimension of the outer surface of the sleeve as a function of a rotation speed of the shaft.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: December 5, 2017
    Assignee: Nuovo Pignone Srl
    Inventors: Leonardo Baldassarre, Andrea Cianti, Michele Fontana, Andrea Bernocchi, Daniele Panara
  • Patent number: 9822812
    Abstract: A bearing housing (12) for a turbocharger having a rotatable shaft (14) passing through the bearing housing (12) with journal bearings (30) having tilting pads (40) for supporting the rotatable shaft (14) in the bearing housing (12). The tilting pads (40) may have oil supply holes (50) through each pad (40) to direct lubrication to each pad surface (44). The journal bearings (30) preferably have a circumferential groove (52) on an outer surface of the bearing aligned with the oil supply holes (50) to help feed oil to the oil supply holes (50).
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: November 21, 2017
    Assignee: BorgWarner, Inc.
    Inventors: Keun Ryu, Zachary Ashton
  • Patent number: 9790990
    Abstract: Provided herein, is an apparatus that includes a fluid dynamic bearing defined in a gap between a stationary component and a rotatable component. The fluid dynamic bearing includes a first portion of the gap at an axial end of the fluid dynamic bearing, and a second portion of the gap. The first portion of the gap is narrower than the second portion of the gap. A groove in the fluid dynamic bearing on the stationary component or the rotatable component includes a portion of a predetermined width or a predetermined depth. The portion of the predetermined width or predetermined depth is selected based on the first gap or the second gap.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: October 17, 2017
    Assignee: Seagate Technology LLC
    Inventors: Hans Leuthold, Paco G. Flores, Chris Woldemar
  • Patent number: 9765790
    Abstract: An electrical submersible pump assembly has a thrust bearing mechanism with first and second thrust runners axially and rotationally secured to the shaft and located within a housing. First and second thrust receiving structures are rigidly mounted in the housing to receive thrust from the first and second thrust transferring devices. A deflectable member located in the first thrust transfer thrust device decreases in axial thickness in response to thrust of a selected level. The second thrust transfer thrust device has an axial length less than an axial distance from the second thrust receiving structure to the second thrust runner, defining an initial axial gap. During operation of the pump, the shaft and the first and second thrust runners move axially a limited extent, closing the gap and transferring thrust from the second thrust transfer device to the second thrust receiving structure.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: September 19, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: David Tanner, Arturo Luis Poretti, Ryan P. Semple, Aron M. Meyer
  • Patent number: 9683602
    Abstract: The invention relates to a slide bearing set (4), comprising a slide bearing combination consisting of a radial bearing (6) with a radial bearing slide surface (7) and comprising a first axial bearing (8) with an axial bearing slide surface (9), wherein the first axial bearing (8) is arranged next to the radial bearing (6) in an axial direction (10), and with a lubricant supply device, which comprises a supply line (20) for a lubricant to the radial bearing slide surface (7) of the radial bearing (6). At least one first transversal groove (22) is disposed in the radial bearing (6) such that at least one part of the lubricant is deviated towards the first axial bearing (8) and the first axial bearing (8) can be supplied with the lubricant solely via the radial bearing (6).
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: June 20, 2017
    Assignee: Miba Gleitlager Austria GmbH
    Inventors: Gunther Hager, Johannes Sebastian Hoelzl, Alexander Kari
  • Patent number: 9657746
    Abstract: A compressor rotor of a gas turbine engine includes a rotor body having a face adapted to face an adjacent rotor. The rotor body extends radially between an outer peripheral rim surface and an inner rim surface. The inner rim surface defines a bore of the rotor body. A plurality of blades extends radially from the outer peripheral rim surface. A plurality of anti-vortex fins extends axially from the face of the rotor body facing the adjacent rotor. The plurality of anti-vortex fins forms a plurality of open radial passageways. The plurality of anti-vortex fins extends axially to a predetermined thickness such that, when assembled with the second rotor, axial extremities of the plurality of anti-vortex fins being in close proximity with the adjacent rotor and the adjacent rotor closes the radial passageways. A method of providing a first rotor for assembly with a second facing rotor of a compressor rotor assembly is also presented.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: May 23, 2017
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventor: Tibor Urac
  • Patent number: 9562602
    Abstract: A bearing for a gearbox, the bearing having a cylindrical body. The cylindrical body defines a hollow interior chamber. The cylindrical body has a gear supporting section. The gear supporting section has a cross-section formed by three lobes equally distributed around a circumference of the cylindrical body. Each of the lobes has a land portion having a first radius over at least 20% of the lobe. Each lobe also has a tapered portion that gradually slopes from the first radius of the land portion to a reduced radius region that is smaller than the first radius. The tapered portion is formed over less than 80% of each lobe. Each lobe also has an opening formed in the reduced radius region and a flow passage fluidly connecting the hollow interior of the cylindrical body with the opening formed in the reduced radius region.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: February 7, 2017
    Assignee: Solar Turbines Incorporated
    Inventors: Edward William Sieveking, Yuanhong Guan
  • Patent number: 9518607
    Abstract: A drain proof bearing assembly includes a seat; a cylindrical bearing being receivable in a hollow space of the seat; the bearing being formed with an axial hole; an upper opening of the axial hole of the bearing being formed with an annual recess for receiving a drain proof ring; a plurality of radial notches being formed radially on an upper surface of the bearing; an outer surface of the bearing being formed with a plurality of oil guiding trenches; by the notches, the oil guiding trenches being communicated to the annular recess; and a press plate having an inner hollow penetrating hole and receivable in the hollow spate of the seat. Thereby, the fluid is prevented from draining out along the path from the spindle to the press plate. This design is effective from various kinds of bearings, such as fluid dynamic bearings, or oil bearings, etc.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: December 13, 2016
    Inventor: John Wun-Chang Shih
  • Patent number: 9520754
    Abstract: A motor for use in a disk drive apparatus includes a bearing, a rotary unit, a stator, a thin flat base member, and a cylindrical holder extending in an axial direction. The base member includes a first through-hole, a peripheral edge portion, and a thin portion. The thin portion is located radially outward of the peripheral edge portion. The thin portion has an axial thickness smaller than an axial thickness of the peripheral edge portion. The holder includes a first protrusion portion and a second protrusion portion. The first protrusion portion extends radially outward and is located axially above the peripheral edge portion. The second protrusion portion extends radially outward and is located axially below the peripheral edge portion. The bearing is located inside the holder. A stator core is located radially outside the holder and axially above the thin portion.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: December 13, 2016
    Assignee: NIDEC CORPORATION
    Inventors: Takuro Matsumoto, Atsushi Yawata
  • Patent number: 9476449
    Abstract: A fluid dynamic bearing device including: a bearing sleeve fixed to an inner periphery of a housing; a shaft member removably inserted along an inner periphery of the bearing sleeve; an annular member having an inner peripheral surface for defining a radial gap together with an outer peripheral surface of the shaft member; and radial bearing portions and a thrust bearing portion for supporting the shaft member. At least the radial bearing gap at each of the radial bearing portions, and a bottom gap having the thrust bearing portion received therein are filled with lubricating oil. A void section is formed in an interior space of the housing. Assuming that d1 represents a gap width of the radial bearing gap and d2 represents a gap width of the radial gap, a relationship of 30d1?d2?250d1 is satisfied.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: October 25, 2016
    Assignee: NTN CORPORATION
    Inventors: Shinji Komatsubara, Tetsuya Kurimura, Yasuhiro Yamamoto
  • Patent number: 9429165
    Abstract: In a bearing mechanism according to a preferred embodiment of the present invention, a seal portion in which a surface of a lubricating oil is located is defined in a seal gap defined between an outer circumferential surface of a first tubular portion and an inner circumferential surface of a second tubular portion. The first tubular portion includes, in an area where the outer circumferential surface of the first tubular portion is in contact with the lubricating oil, a maximum outside diameter portion at which the outside diameter of the first tubular portion is greatest, an annular shoulder portion including a surface facing toward the surface of the lubricating oil and at which the outside diameter is smaller than at the maximum outside diameter portion, and an inclined portion at which the outside diameter gradually decreases from the annular shoulder portion toward the surface of the lubricating oil.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: August 30, 2016
    Assignee: NIDEC CORPORATION
    Inventors: Takehito Tamaoka, Kazuhiko Fukushima
  • Patent number: 9404535
    Abstract: A sliding bearing assembly for joints of construction equipment can be provided, in which production cost is reduced by decreasing the used amount of Cu and sulfides having high fixability to a matrix are dispersed. The sliding bearing assembly for joints of construction equipment, includes at least a shaft and a bush made of an iron-based sintered material which functions as a sliding bearing, in which the bush has the overall composition of, by mass %, 0.1 to 10% of Cu, 0.2 to 1.2% of C, 0.03 to 0.9% of Mn, 0.36 to 1.68% of S, and the balance of Fe and inevitable impurities, a metal structure has pores dispersed in a matrix mainly including a martensite structure and sulfide particles precipitated and dispersed, and the sulfide particles are dispersed at 1 to 7 volume % in the matrix.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: August 2, 2016
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Hidekazu Tokushima, Hideaki Kawata, Daisuke Fukae, Osamu Mawatari, Hideki Akita, Makoto Sugaya, Akiko Satou, Osamu Gokita, Shigeyuki Sakurai
  • Patent number: 9376219
    Abstract: An actuating system of sectors of a device for producing an airplane fuselage in which a lamination mandrel includes a plurality of sectors that are angularly spaced about an axis and mobile between an expanded lamination position and a contracted dissembled position. Each sector has screw-nut screw type actuating system in which a threaded element is rotated about the axis by a motor. The threaded element includes an internal shaft made of a first material extending along the axis, an external tubular portion made of a second material that is mounted axially on the shaft and constraint element arranged between the internal shaft and the external tubular portion to prevent angular displacement of the external tubular portion with respect to the internal shaft and allow a linear sliding of the external tubular portion with respect to the internal shaft.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: June 28, 2016
    Assignee: ALENIA AERMACCHI S.P.A.
    Inventors: Guido Sibona, Ettore Mostarda, Giuseppe Iovine
  • Patent number: 9366263
    Abstract: A bearing apparatus according to a preferred embodiment of the present invention includes a bearing portion having a bottom and being substantially cylindrical; a shaft inserted in the bearing portion, and arranged to rotate about a central axis relative to the bearing portion; a bearing opposing portion defined in one piece, arranged above the bearing portion, and arranged to hold an upper end portion of the shaft while covering an outer circumferential surface upper portion and an upper end surface of the shaft; and a cylindrical seal portion arranged to extend downward from the bearing opposing portion. An inner circumferential surface of the cylindrical seal portion and an outer circumferential surface of the bearing portion are arranged to together define a seal gap therebetween, the seal gap including a seal portion having a surface of a lubricating oil defined therein.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: June 14, 2016
    Assignee: NIDEC CORPORATION
    Inventors: Takehito Tamaoka, Kazuhiko Fukushima
  • Patent number: 9353789
    Abstract: Embodiments of the invention are directed to bearing assemblies, bearing apparatuses, and methods of operation thereof. In particular, embodiments include bearing assemblies configured to maintain a fluid at or near bearing surfaces thereof. For example, one or more bearing assemblies of a bearing apparatus may include a fluid retention mechanism that may facilitate fluid retention at or near the bearing surfaces.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: May 31, 2016
    Assignee: US SYNTHETIC CORPORATION
    Inventor: Jair Jahaziel Gonzalez
  • Patent number: 9333950
    Abstract: In the case of a window cleaning system for a motor vehicle, a washing fluid line (6) is manufactured integrally with plug-type coupling parts (8). Movable components and a sealing ring (15) are arranged on bushing-type coupling parts (9). The bushing-type coupling parts (9) are arranged on a washing fluid pump (2), on washing nozzles (4) and on a T connector (7). By this means, the window cleaning system is constructed in a particularly simple manner and can be manufactured cost-effectively.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: May 10, 2016
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Patrick Opel, Nico Schmidt, Thomas Werner
  • Patent number: 9068589
    Abstract: A rotating device includes a shaft body that has a shaft, a first flange extending outwardly from the outer periphery of the shaft, and a second flange, a bearing body that has a shaft encircling member encircling the shaft between the first flange and the second flange, a first thrust opposing part formed between the shaft encircling member and the first flange, a second thrust opposing part formed between the shaft encircling member and the second flange, an intermediate space provided in a gap between the shaft and the shaft encircling member, a radial dynamic pressure bearing, a first communication channel that allows the first thrust opposing part to be in communication with the intermediate space, and a second communication channel that allows the second thrust opposing part to be in communication with the intermediate space.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: June 30, 2015
    Assignee: SAMSUNG ELECTRO-MECHANICS JAPAN ADVANCED TECHNOLOGY CO., LTD.
    Inventor: Ryusuke Sugiki
  • Patent number: 9065308
    Abstract: In addition to a bearing holder being provided with an annular groove that opens down in the axial direction, an end cap is provided with an annular projection that extends up in the axial direction, and by way of press-fitting the projection into the groove, the fitted portion of the bearing holder and the end cap is forms an axially convex labyrinthine shape extending along the entire perimeter.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: June 23, 2015
    Assignee: Tokyo Parts Industrial Co., Ltd.
    Inventor: Masahiro Nishidate
  • Patent number: 9062716
    Abstract: A moveable guide carriage forms a linear roller bearing on a guide rail. The guide carriage has four endlessly revolving rows of rollers that are guided in respective roller tracks. The guide carriage has a central main body with two end sides that are spaced apart from each other in the direction of movement. A respective end cap is arranged on the two end sides of the main body. The rows of rollers are deflected in the end caps. At least one of the end caps includes a lubricant input on an outer side. The guide carriage includes a branching lubricant line between the lubricant input and the four rows of rollers or the four roller tracks. At least two internal nonreturn valves are provided in the lubricant line in the interior of the end cap or between the end cap and the main body.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: June 23, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Michael Dittmar, Andre Schott, Andreas Schupies
  • Patent number: 9064531
    Abstract: A rotating apparatus includes a hub, a shaft housing portion having a center through-hole, a base plate, and a shaft with a cylindrical section housed in the through-hole. At a joint between the shaft housing portion and the hub is formed a bonding region for bonding the shaft housing portion and the hub by a hardening resin, and a narrow-gap region more toward the base plate than the bonding region. A gap between the shaft housing portion and the hub in the narrow-gap region is narrower than a gap between the shaft housing portion and the hub in the bonding region. The hub includes a fourth circumferential recessed portion recessed in the axial direction and a lower circumferential raised portion projecting in the axial direction on a radially inner side of the fourth circumferential recessed portion. The narrow-gap region is located inside the lower circumferential raised portion.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: June 23, 2015
    Assignee: SAMSUNG ELECTRO-MECHANICS JAPAN ADVANCED TECHNOLOGY, CO., LTD.
    Inventors: Mitsuo Kodama, Ryusuke Sugiki, Akira Aoi
  • Patent number: 9030068
    Abstract: There is provided a spindle motor including: a shaft connected directly or indirectly to a base member and having a depression groove formed in a central portion of an outer peripheral surface thereof; a sleeve rotatably installed on the shaft and having a communication hole formed so as to be connected to the depression groove; and a rotor hub fixedly installed on the sleeve to thereby rotate together therewith, wherein the communication hole is inclined so that lubricating fluid may be easily injected into the depression groove, and the sleeve has a fluid storage part formed on an outer peripheral surface thereof, the fluid storage part being connected to the communication hole and temporarily storing the lubricating fluid therein.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: May 12, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Young Ha Park
  • Patent number: 9016947
    Abstract: Provided herein is an apparatus, including a stationary component and a rotatable component; a fluid between the stationary component and the rotatable component; a limiter shoulder of the stationary component; a flanged limiter bushing of the rotatable component; and a separating means for separating the limiter shoulder and the limiter bushing, wherein the separating means comprises the fluid.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: April 28, 2015
    Assignee: Seagate Technology LLC
    Inventors: Paco Gregor Flores, Troy M. Herndon, Norbert Steven Parsoneault
  • Patent number: 9006947
    Abstract: There is provided a spindle motor including: a base part including a base member and a lower thrust member fixedly installed on the base member; a shaft having a lower end portion fixedly installed on the base part; an upper thrust member fixedly installed on an upper end portion of the shaft; a sleeve disposed between the upper and lower thrust members and rotatably installed on the shaft; and a rotor hub fixedly installed on the sleeve to thereby rotate together therewith, wherein the sleeve includes a connection hole formed therein in order to connect an inner diameter portion thereof to an outer peripheral surface thereof.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: April 14, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Young Ha Park
  • Patent number: 9006944
    Abstract: A motor includes a base, a rotor and a stator. The base includes a shaft tube having an open end and a closed end. A shaft supporting assembly is received in the shaft tube and includes a top portion. The rotor includes a shaft rotatable about a longitudinal axis, and the shaft includes a retaining groove. The stator includes a limiting member having a distal end. The limiting member defines an opening through which the shaft extends. The limiting member further includes a bottom facing the shaft supporting assembly. A gap and a supporting member are formed between the bottom and the top portion. The supporting member is closer to the shaft tube than to the shaft, and the gap is closer to the shaft than to the shaft tube.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: April 14, 2015
    Assignee: Sunonwealth Electric Machine Industry Co., Ltd.
    Inventor: Alex Horng
  • Publication number: 20150070798
    Abstract: A spindle motor is configured to rotate a disk in a case defined by a base plate and a top cover arranged to cover an upper side of the base plate. The spindle motor includes a fluid dynamic bearing including a lubricant oil. A rotating portion body of the spindle motor includes an air hole. An upper opening of the air hole is in communication with an annular space between the top cover and the rotating portion body. A lower opening of the air hole is in communication with a gap between a stator and a magnet. Accordingly, even if a gas including the lubricant oil vaporized through a liquid surface of the lubricant oil leaks into the annular space, at least a portion of the gas including the lubricant oil flows into the air hole.
    Type: Application
    Filed: August 14, 2014
    Publication date: March 12, 2015
    Inventors: Masahiro SHIRAISHI, Tsuchitsugu WATANABE, Yoichi SEKII
  • Patent number: 8973848
    Abstract: An air bearing assembly supporting a turbine driven rotatable motor shaft is provided. The assembly includes a composite cylindrical air bearing having alternating, bonded segmented porous carbon sections and nonporous carbon sections. The composite bearing has a sleeve installed circumferentially therearound. The sleeve has openings therein, therethrough and therearound such that the openings are adjacent the porous carbon sections and are oriented so as to be in longitudinal and circumferential registry with the porous carbon sections. Air passageways deliver supplied air into and through the sleeve openings, thence into and through the porous sections, thereby providing frictionless support for the rotating shaft. The assembly includes “O”-rings installed circumferentially therearound, one at each end of the assembly. A specific embodiment, namely a rotary bell cup atomizer driven by a turbine mounted on a rotatable motor shaft supported by the air bearing assembly, is disclosed and claimed.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: March 10, 2015
    Assignee: EFC Systems, Inc.
    Inventors: Gunnar van der Steur, Joseph Cichocki
  • Patent number: 8967865
    Abstract: A bearing apparatus includes a first cup portion defining a portion of a stationary portion of a bearing apparatus includes a first circular plate portion and a first cylindrical portion projecting downward from an outer edge portion of the first circular plate portion. A rotating portion of the bearing apparatus includes an annular recessed portion arranged to accommodate at least a lower end portion of the first cylindrical portion. The stationary portion includes a second cup portion including a second circular plate portion arranged to extend radially outward from an outer circumferential surface of a stationary shaft below the first cup portion and a second cylindrical portion arranged to project upward from an outer edge portion of the second circular plate portion. One of the first and second cup portions is integral with the stationary shaft defining a single monolithic member, and the other is fixed to the stationary shaft.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: March 3, 2015
    Assignee: Nidec Corporation
    Inventors: Akihiro Kimura, Teiichi Hirono, Kunio Sakurada, Kyoko Horise
  • Publication number: 20150049861
    Abstract: A liquid metal bearing includes at least one first bearing part and at least one second bearing part that have a non-positive fit connection to one another. At least one first ductile sealing layer is disposed at least partly between at least a first bearing part of the at least one bearing and a second bearing part of the at least one second bearing part.
    Type: Application
    Filed: August 12, 2014
    Publication date: February 19, 2015
    Inventors: Ronald Dittrich, Manfred Fuchs
  • Publication number: 20150049967
    Abstract: In an aluminum turbocharger bearing housing, there is a potential for wear of the bearing housing at the interface with the turbine housing and/or the bearing system. One area of potential concern is the interface between the flange of the bearing housing and an abutment of the turbine housing. With a protective element at the interface, the potential for wear, and thus misalignment of the rotating assembly with the housings in which they operate can be mitigated. The protective element can be a cap for the bearing housing flange or a heat shield adapted to cover certain faces of the bearing housing flange. The protective element can be a sleeve provided within a bore in the bearing housing. The protective element can be made of a material with a higher heat resistance and/or a higher wear resistance than the aluminum bearing housing.
    Type: Application
    Filed: March 19, 2013
    Publication date: February 19, 2015
    Applicant: BorgWarner Inc.
    Inventors: Brock Fraser, Mehul Sonigra
  • Patent number: 8955224
    Abstract: An aspect of the present disclosure relates to a fluid bearing and a method of adjusting the load carrying capacity of a fluid bearing. The fluid bearing may include a bore defined in the fluid bearing and a rotatable bearing including a rotatable bearing surface. Lubricating fluid in the bore may be contacted with at least a portion of the rotatable bearing surface, wherein an effective bearing surface area is provided where the lubricating fluid contacts the rotatable bearing surface. The effective bearing surface area may be altered by either increasing or reducing the area of the rotatable bearing surface which is contacted by the lubricating fluid.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: February 17, 2015
    Assignee: Southwest Research Institute
    Inventor: Charles E. Roberts, Jr.