Pre-usage Process, E.g., Preloading, Aligning Patents (Class 29/898.09)
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Patent number: 11565547Abstract: A system for use in providing a load on a bearing mounted to a shaft includes a preload apparatus having a first extension and a second extension engageable with an inner race of the bearing and configured to provide a compressive load to the bearing. The first extension has a first projection and the second extension has a second projection. A stop ring is configured to limit a radially inward movement of the first extension and the second extension toward each other to position the first projection and the second projection relative to the bearing.Type: GrantFiled: March 12, 2021Date of Patent: January 31, 2023Assignee: TEMPER AXLE PRODUCTS CORPORATIONInventor: Sean Strait
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Patent number: 11346399Abstract: A transport-securing unit for retaining a plurality of rollers in a rolling-element bearing cage during transportation may include an annular region and a plurality of axially extending, circumferentially spaced projections extending from the annular region. Also, an assembly of the transport-securing unit, a rolling-element cage and a plurality of rollers in pockets of the rolling-element bearing cage, where the transport-securing unit is formed separately from the rolling-element bearing cage, and where the projections extend inside the cage and limit radially inward movement of the rollers relative to the cage.Type: GrantFiled: November 23, 2020Date of Patent: May 31, 2022Assignee: AKTIEBOLAGET SKFInventors: Ludwig Edelmann, Roland Haas, Dominic Namyslo, Matthias Schuler, Johannes Zang
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Patent number: 11305408Abstract: An apparatus for providing a load on a bearing mounted to a shaft includes an attaching member releasably connectable to the shaft. A press mechanism is coupled to the attaching member and is configured to provide a compressive load to the bearing. An optical sending unit is configured to output a high intensity light to allow a user to locate a shaft slot of the shaft to align the press mechanism relative to the shaft when the attaching member connects to the shaft.Type: GrantFiled: November 11, 2019Date of Patent: April 19, 2022Assignee: TEMPER AXLE PRODUCTS CORPORATIONInventors: John E. Rode, Sean E. Strait
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Patent number: 11286987Abstract: The invention relates to a bearing cage for a bearing of the type comprising a first ring having a first bearing race, a second ring having a second bearing race, rolling bodies positioned in an annular rolling volume between the first and the second bearing races in such a way as to enable a relative rotation between the first and second rings around a reference axis of the bearing, the cage comprising cells for housing rolling bodies, the cage being characterised in that it comprises an interface for coupling with a maneuvering member, such that when the maneuvering member is engaged with the coupling interface, the bearing cage is capable of being rotationally driven by the maneuvering member in a predetermined direction with respect to the reference axis.Type: GrantFiled: July 2, 2020Date of Patent: March 29, 2022Assignee: NTN-SNR ROULEMENTSInventors: David Calatraba, Guillaume Lefort, Cyprien Teillou, Aurélien Bonnaudet, Ivan Goudet, Vincent Pallanchard
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Patent number: 10882612Abstract: A tiltrotor aircraft may be provided and may include a mast assembly, in which the mast assembly may include a mast; a bearing system; a housing; and a housing cap secured to the housing, wherein the bearing system is between the mast and the housing. The bearing system may further include a first bearing assembly including a first inner race, a first outer race, and a plurality of first tapered roller bearings; a second bearing assembly including a second inner race, a second outer race, and a plurality of second tapered roller bearings; an inner spacer and an outer spacer in which the inner and outer spacers are between the first and second bearing assemblies; and a retaining device in which the retaining device and the housing cap provide, at least in part, pre-loading for the first and second bearing assemblies.Type: GrantFiled: November 8, 2019Date of Patent: January 5, 2021Assignee: TEXTRON INNOVATIONS INC.Inventors: Russell L. Mueller, Tyson T. Henry, Ezra M. Tiprigan
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Patent number: 10794422Abstract: A slewing ring bearing includes an outer race and an inner race rotatable relative to the outer race. At least one of the outer race or the inner race is split into a first portion and a separate, second portion. The slewing ring bearing also has a plurality of roller elements arranged between one or more raceways defined by the inner and outer races. The first and second portions of at least one of the inner or outer races are coupled together via a threaded interface therebetween so as to establish a predetermined preload for the slewing ring bearing.Type: GrantFiled: May 22, 2019Date of Patent: October 6, 2020Assignee: General Electric CompanyInventor: Martin Scott Galehouse
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Patent number: 10746285Abstract: A planetary carrier for a gear stage of a planetary gearset includes at least one planetary pin that is disposed in a rotationally fixed manner in the planetary carrier, and a pair of tapered roller bearings that are disposed on the planetary pin supporting a planet gear. The planetary pin is fastened by a pin screw connection, which comprises a pin screw and a nut, to the planetary carrier. The tapered roller bearings are clamped against each other between the planetary carrier and the planet pin and are axially pretensioned by the pin screw connection.Type: GrantFiled: November 22, 2016Date of Patent: August 18, 2020Assignee: ZF Friedrichshafen AGInventors: Joerg Muench, Dirk Strasser, Ralf Sperlich
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Patent number: 10451107Abstract: A method for mounting a rolling bearing arrangement onto a rotor and into the bearing housing of a turbocharger is provided. The method includes inserting a component, which is deformable under the exertion of pressure, into the intermediate space between two rolling bearings of the rotor assembly. The rotor assembly includes a rotor shaft, inner bearing rings which are fastened to the rotor shaft or integrated into the rotor shaft and which have a spacing to one another, rolling elements which are inserted into the inner bearing rings, and outer bearing rings which likewise have a spacing to one another. The method also includes deforming, by exertion of pressure, the component that has been inserted into the intermediate space between the two rolling bearings, to set a desired axial preload between the two rolling bearings.Type: GrantFiled: February 18, 2018Date of Patent: October 22, 2019Assignee: CPT Group GmbHInventor: Jan Ehrhard
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Patent number: 10208789Abstract: A double-row angular contact ball bearing for a CT scanning device includes an inner member including a pair of raceway rings. The raceway rings have positioning holes into which a positioning member is inserted, to thereby suppress radial decentering of the raceway rings. Both the raceway rings are fastened by fixing bolts. The raceway rings have opposed end surfaces, and are fastened by the fixing bolts to bring the end surfaces into abutment against each other to apply a preload at a fixed position between balls and raceway surfaces. The following relationship is set: Db/h?0.26, where Db represents a diameter of each of the balls, and h represents a radial dimension from a center of each of the balls to an inner diameter of the inner member.Type: GrantFiled: September 9, 2015Date of Patent: February 19, 2019Assignee: NTN CORPORATIONInventors: Tsutomu Maiwa, Takahiro Kanamoto, Miki Karasawa
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Patent number: 9835197Abstract: The present disclosure relates to pinion assembly preloading systems and methods of operation. Disclosed are systems including a press actuator that applies an axial force against a pinion assembly; a force sensor that measures a reaction force at the pinion assembly; and a method of controlling the press actuator according to a change in the reaction force.Type: GrantFiled: June 24, 2015Date of Patent: December 5, 2017Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Peter Alexander Szpara, Timothy John Reed, Troy Smith, Julie Anne Sunstein, Wayne Bennett Uhrick
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Patent number: 9732801Abstract: A method for manufacturing a rolling-element bearing assembly includes providing a first bearing ring, a second bearing ring and rolling-elements, rotating the first bearing ring relative to the second bearing ring and joining the first bearing ring, the second bearing ring and the rolling elements while the first bearing ring is rotating relative to the second bearing ring. The method additionally includes connecting one of the bearing rings to a bearing ring of another rolling-element bearing or to a spacer while the first bearing ring is rotating relative to the second bearing ring.Type: GrantFiled: August 14, 2013Date of Patent: August 15, 2017Assignee: AKTIEBOLAGET SKFInventors: Rico Dittmar, Christian Knoche, Achim Mueller, Thomas Will
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Patent number: 9091298Abstract: The present disclosure relates to pinion assembly preloading systems. Disclosed are systems including a press actuator configured to apply an axial force against a pinion assembly; a force sensor configured to measure a reaction force at the pinion assembly; and a controller configured to control the press actuator according to a change in the reaction force.Type: GrantFiled: August 19, 2011Date of Patent: July 28, 2015Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Peter Alexander Szpara, Timothy John Reed, Troy Smith, Julie Anne Sunstein, Wayne Uhrick
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Publication number: 20150052758Abstract: A method for adjusting an axial preload in a bearing assembly that has two rolling-element bearings that are axially pressable against each other, each of the two rolling-element bearings including at least one bearing outer ring and at least one bearing inner ring and at least one row of rolling elements disposed between the at least one bearing outer ring and at least one bearing inner ring. The method includes a) driving the bearing assembly by rotating one of the bearing outer ring and the bearing inner ring while holding other bearing ring fixed and measuring the rotational speed of the circulation of the rolling elements about the bearing assembly axis or of a bearing cage about the stationary bearing ring, and b) changing the axial preload in the bearing assembly until a desired rotational speed has been obtained.Type: ApplicationFiled: May 2, 2014Publication date: February 26, 2015Applicant: Aktiebolaget SKFInventor: Padelis Katsaros
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Patent number: 8955224Abstract: 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: GrantFiled: July 15, 2011Date of Patent: February 17, 2015Assignee: Southwest Research InstituteInventor: Charles E. Roberts, Jr.
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Publication number: 20150043858Abstract: A bearing system for supporting components that are movable relative to one another includes at least one bearing and a preload mechanism for changing a preload of the at least one bearing based on an operating state of the bearing system, where the preload mechanism includes, for example, a piezoelectric element, a Peltier element, an expansion material or a micromechanical element.Type: ApplicationFiled: August 5, 2014Publication date: February 12, 2015Applicant: AKTIEBOLAGET SKFInventors: Wolfgang Aust, Hubert Herbst, Joerg Wainus, Volker Wendt
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Patent number: 8904646Abstract: An apparatus for providing a load on a bearing mounted to a shaft includes an attaching member and a press mechanism. The attaching member is releasably connected to the shaft. The press member is coupled to the attaching member and is configured to provide a compressive load to the bearing. The press mechanism includes an aligning arm configured to engage a shaft slot of the shaft to align the press mechanism relative to the shaft when the attaching member connects to the shaft. A lock nut is engageable with the shaft and has a plurality of engaging teeth configured to engage a plurality of keeper teeth of a keeper.Type: GrantFiled: January 21, 2014Date of Patent: December 9, 2014Inventor: John E. Rode
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Patent number: 8857061Abstract: A system and method for mounting a bearing assembly on a shaft includes an internal flange, external flange, and a sleeve. The internal flange is securable to the bearing assembly and has a displacement pin extending outward that defines an initial position of the bearing assembly relative to the shaft. The external flange is secured to the internal flange via fasteners passing through elongated holes. The external flange has an opening configured to receive the displacement pin. The external flange may be rotated when coupled to the internal flange with the fasteners between a first position where the external flange opening is not in register with the displacement pin and a second position where the external flange opening is in register with the displacement pin. A sleeve has a tapered outside diameter and is engageable with the external flange.Type: GrantFiled: July 19, 2012Date of Patent: October 14, 2014Assignee: Baldor Electric CompanyInventor: William Gregory Hewitt
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Publication number: 20140290065Abstract: Methods and apparatus for preloading a bearing are provided. These methods and apparatus include preload monitoring devices whereby the mechanic can accurately monitor and regulate the preload on a bearing or bearing assembly. Aspects of the invention may also be used to adjust the endplay on a bearing or a bearing assembly. In one aspect, the preload on the bearing is transmitted through a housing having a fluid pressure that can be detected and monitored. An apparatus for precisely rotating a nut and a tool for precisely rotating a nut are also provided. A bearing retaining nut arrangement that permits the loading or evaluating of a bearing inner race is also provided. The bearing retaining nut arrangement includes a first load-setting nut, a lock washer, and a second jam nut that secures the arrangement to a shaft.Type: ApplicationFiled: June 16, 2014Publication date: October 2, 2014Inventor: John E. Rode
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Patent number: 8826542Abstract: In summary, the invention relates to a method for forming an end-side toothing arrangement of a roiling bearing, in particular a wheel bearing. The aim is to improve the uniformity of the end-side toothing arrangement and to allow a greater tooth depth. This is achieved by two method steps in that, in a first step before the reshaping of an end piece of a hub, a die is axially arranged on the rolling bearing in a preassembled state and, in a second step during the reshaping of the end piece and the shaping of the end-side toothing arrangement, the die radially delimits a radial recess of the rolling rivet collar as it forms. In addition, the die reduces or prevents radial widening of the inner ring.Type: GrantFiled: August 8, 2013Date of Patent: September 9, 2014Assignee: Schaeffler Technologies GmbH & Co. KGInventors: Roland Langer, Peter Niebling, Sebastian Lorenz
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Patent number: 8789281Abstract: Methods of wearing-in superhard bearing elements over time so that hydrodynamic or near hydrodynamic lubrication of opposed bearing surfaces develops and thrust-bearing apparatuses. In an embodiment, a thrust-bearing apparatus including first and second thrust-bearing assemblies is received or provided. Each thrust-bearing assembly includes a support ring and a plurality of superhard bearing elements mounted circumferentially around the support ring. The superhard bearing elements of each thrust-bearing assembly are oriented so as to be opposed to one another.Type: GrantFiled: March 24, 2011Date of Patent: July 29, 2014Assignee: US Synthetic CorporationInventors: Timothy N. Sexton, Craig H. Cooley, Cody W. Knuteson
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Patent number: 8782901Abstract: A seal member is fixed to a predetermined position on an outer peripheral surface of a shaft portion. During rotation of a shaft member, a lower end surface of the seal member is opposed to an upper end surface of a bearing sleeve through an intermediation of a thrust bearing gap to form a second thrust bearing gap. An outer peripheral surface of the seal member defines between itself and an inner peripheral surface of an upper end portion of a housing a seal space having a predetermined volume.Type: GrantFiled: December 5, 2011Date of Patent: July 22, 2014Assignee: NTN CorporationInventor: Toshiyuki Mizutani
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Patent number: 8757890Abstract: A method for assembling a set of bearing assemblies 100 onto a mill roll 10 and for establishing a required bearing setting. The mill roll 10 is configured to receive a set of bearing assemblies 100 at each axial end, with the bearing rolling elements 100A contained within supporting chocks 102 adapted for placement within a mill housing. The chock assembly 102R and bearing assembly 100 at a first end of the roll are positioned first, and coupled to the first end an axial center rod 22 passing through an axial bore 24 of the roll 12. The chock assembly 102L and bearing assembly 100 at the second end of the roll 12 is then positioned onto the opposite end of the roll 12, and a connecting sub-assembly 300, 400, 504A is secured to the second end of the axial center rod 22. The connecting sub-assembly engages the second chock assembly 102L and bearing assembly 100, and is adjusted to achieve a desired bearing setting for both bearing assemblies 100 through the center rod 22.Type: GrantFiled: July 29, 2010Date of Patent: June 24, 2014Assignee: The Timken CompanyInventors: Mark E. Baker, Nigel A. Los, Thomas L. Baker
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Patent number: 8745875Abstract: An interlocking nut and washer system complies with new standards identified in the Society of Automotive Engineers (SAE) Recommended Practice J2535, Setting Preload in Heavy-Duty Wheel Bearings, and with maintenance recommendations issued by the Technology Maintenance Council (TMC) Recommended Practice RP618, Wheel Bearing Adjustment Procedure. The system includes an improved inner washer, adjustment nut, intermediate washer, and outer nut that interlocks with the intermediate washer following the introduction of an established level of preload force by the adjustment nut. The inner washer isolates the adjustment nut from the inner bearing race to eliminate frictional wear. An increase in outer diameter of the inner washer provides an interference capability that serves as a safety factor to prevent separation of the wheel hub from the axle spindle in event of bearing failure. The inner washer includes markers to establish the final adjusted preload or the endplay position of the adjustment nut.Type: GrantFiled: November 26, 2012Date of Patent: June 10, 2014Inventor: George A. Hagelthorn
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Publication number: 20140144026Abstract: An interlocking nut and washer system complies with new standards identified in the Society of Automotive Engineers (SAE) Recommended Practice J2535, Setting Preload in Heavy-Duty Wheel Bearings, and with maintenance recommendations issued by the Technology Maintenance Council (TMC) Recommended Practice RP618, Wheel Bearing Adjustment Procedure. The system includes an improved inner washer, adjustment nut, intermediate washer, and outer nut that interlocks with the intermediate washer following the introduction of an established level of preload force by the adjustment nut. The inner washer isolates the adjustment nut from the inner bearing race to eliminate frictional wear. An increase in outer diameter of the inner washer provides an interference capability that serves as a safety factor to prevent separation of the wheel hub from the axle spindle in event of bearing failure. The inner washer includes markers to establish the final adjusted preload or the endplay position of the adjustment nut.Type: ApplicationFiled: November 26, 2012Publication date: May 29, 2014Inventor: George A. Hagelthorn
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Patent number: 8713800Abstract: An assembly jig for a radial roller bearing comprises a retaining structure having a plurality of axially-projecting projections configured to retain a plurality of roller bodies disposed in a ring-shape during a bearing assembly process. The roller bodies are supportable in a first radial direction on a first component and each roller body contacts two adjacent projections in a second radial direction, which is opposite of the first radial direction. The projections are configured to press the roller bodies against the first component and such that a portion of the roller bodies projects past the projections in the second radial direction. The assembly jig is removable from the roller bearing in the axial direction after final assembly of the roller bearing.Type: GrantFiled: May 20, 2009Date of Patent: May 6, 2014Assignee: Aktiebolaget SKFInventor: Wolfgang Friedl
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Patent number: 8650757Abstract: An apparatus for providing a load on a bearing mounted to a shaft includes an attaching member and a press mechanism. The attaching member is releasably connected to the shaft. The press member is coupled to the attaching member and is configured to provide a compressive load to the bearing. The press mechanism includes an aligning arm configured to engage a shaft slot of the shaft to align the press mechanism relative to the shaft when the attaching member connects to the shaft.Type: GrantFiled: November 21, 2012Date of Patent: February 18, 2014Inventor: John E. Rode
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Publication number: 20140020250Abstract: A method to ascertain measured friction torque to a bearing and a method to reduce preload variation of a hearing pair or set. Friction torque of a bearing is measured at a known load and speed. The value of the measured friction torque is then printed in a data matrix that is then applied to the bearing that was measured. Prior to assembling the bearings on a shaft system, the data matrix is read. The targeted friction torque is calculated for the shaft system based on the desired assembly preload. The bearing preload is then set and verified by measuring the friction torque of the pair of bearings assembled on the shaft. As a result of the method, bearing friction torque variation is substantially mitigated.Type: ApplicationFiled: July 17, 2013Publication date: January 23, 2014Inventors: Chad LABELLE, Shakeel SHAIKH, Michael CLAASSEN
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Publication number: 20130205592Abstract: The invention relates to a method for preparing a bearing arrangement for a roll journal, wherein the bearing arrangement comprises a bearing insert, with a bearing bush, and a journal bush which is mounted with bearing play in the bearing bush and can be pushed onto the roll journal. In order to extend the service life of the bearing arrangement and therefore to save costs, the method according to the invention provides, in order to eliminate scoring, for the external diameter Da of the journal bush also to be reduced below a threshold value Dak and at the same time for a novel bearing bush to be supplied which, with regard to its internal diameter Di new, is adapted to the reduced external diameter of the bearing bush in such a way that the bearing play remains within a predefined permissible value range.Type: ApplicationFiled: September 5, 2011Publication date: August 15, 2013Applicant: SMS SIEMAG AKTIENGESELLSCHAFTInventors: Karl Keller, Konrad Roeingh
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Publication number: 20130153484Abstract: A fluid separation device is provided with an outer housing and a rotor rotatably received within the outer housing. The rotor housing has a first end and a second end. The outer surface of the rotor and/or the inner surface of the outer housing is adapted to allow passage of a fluid component through the surface. The device further includes a flexible seal associated with one of the ends of the rotor and adapted to allow for rotational, non-axial, and axial movement of the rotor with respect to the outer housing.Type: ApplicationFiled: June 27, 2011Publication date: June 20, 2013Applicant: FENWAL, INC.Inventors: Salvatore Manzella, JR., Richard L. West
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Publication number: 20130145621Abstract: An apparatus for providing a load on a bearing mounted to a shaft includes an attaching member and a press mechanism. The attaching member is releasably connected to the shaft. The press member is coupled to the attaching member and is configured to provide a compressive load to the bearing. The press mechanism includes an aligning arm configured to engage a shaft slot of the shaft to align the press mechanism relative to the shaft when the attaching member connects to the shaft. A lock nut is engageable with the shaft and has a plurality of engaging teeth configured to engage a plurality of keeper teeth of a keeper. The nut includes an outer surface having a plurality of markings corresponding to a plurality of roots of the plurality of engaging teeth to allow a user to selectively rotate the nut relative to the aligning arm to an engaging position such that a radially inner side of the keeper engages a slot of the shaft when the keeper teeth engage the engaging teeth of the nut.Type: ApplicationFiled: November 21, 2012Publication date: June 13, 2013Inventor: John E. Rode
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Publication number: 20130114919Abstract: An aspect of the present disclosure relates to a fluid bearing having an adjustable effective surface area and a method of adjusting the load carrying capacity of a fluid bearing. The fluid bearing may include a bore defining a central longitudinal axis and lubricating fluid provided within the bore. The fluid bearing may also include a bearing including a bearing surface, wherein at least a portion of the bearing is positioned within the bore. An adjustable effective bearing surface area may also be provided. The method includes adjusting effective bearing surface area of the bearing.Type: ApplicationFiled: October 26, 2012Publication date: May 9, 2013Applicant: SOUTHWEST RESEARCH INSTITUTEInventor: Southwest Research Institute
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Patent number: 8418367Abstract: To realize a manufacturing method for a wheel-supporting rolling bearing unit that can establish sufficient parallelism between a rotating side installation surface 14 for fastening to and supporting a disk of a disk brake and a stationary side installation surface 15 for fastening a caliper or support, in the present invention, while rotating a hub 2 comprising the rotating side installation surface 14 with respect to an outer race comprising the stationary side installation surface, a finishing process such as turning is performed on the rotating side installation surface 14 or both side surfaces in the axial direction of the disk which is fastened and supported to and by the rotating side installation surface 14, with the stationary side installation surface 15 as a reference surface.Type: GrantFiled: September 5, 2006Date of Patent: April 16, 2013Assignee: NSK Ltd.Inventors: Hiroaki Ishikawa, Yasunori Suzuki, Narihito Otake, Tetsu Takehara, Kiyotaka Hirata, Shouji Horike, Tetsuo Wakabayashi
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Patent number: 8397384Abstract: A method for attaching a bearing on a turbomachine including a stator and a rotor, the bearing including: a first portion attached on the stator of the turbomachine by a plurality of screws and nuts, a second portion attached on the rotor, rotationally movable in one given rotation direction, and a rolling bearing provided between the first and second portions of the bearing is disclosed. The method provides using screws having a screwing rotation direction contrary to the rotation direction of the rotor.Type: GrantFiled: November 6, 2008Date of Patent: March 19, 2013Assignee: SNECMAInventors: Manuel Claude Bertrand Girard, Jerome Tribouiller
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Patent number: 8356944Abstract: A bearing system (A) that supports a shaft (4) in a housing (2) includes two single row tapered roller bearings (6, 8) mounted in opposition. One of the bearings (8) compensates for thermal variations that would otherwise produce excessive preload in the system. It has a conventional cup (48) in the housing and tapered rollers (52) arranged in a single row along the raceway (54) of the cup. It also has a compensating assembly (50, 100, 110, 120, 130) on the shaft, and it includes a ribless cone (60) having a raceway (70) around which the rollers are organized, an axially displaceable rib ring (64) for positioning the rollers, a spring (66) for urging the rib ring against a stop surface (74) on the cone, and a compensating ring (68) formed from a material having a high coefficient of thermal expansion for displacing the rib ring against the force exerted by the spring when the temperature of the compensating assembly exceeds a prescribed set point temperature so as to reduce preload in the bearing system.Type: GrantFiled: June 28, 2007Date of Patent: January 22, 2013Assignee: The Timken CompanyInventors: Gerald P. Fox, Bruce C. Burner
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Patent number: 8336210Abstract: Inner and outer ring spacers include respective load bearing portions, which are positioned on respective sides of a gap of a predetermined size and which confront with each other in an axial direction. Each of the inner and outer ring spacers is divided into two spacer segments along a surface of division extending in a direction perpendicular to the axial direction and passing through the associated load bearing portions. Inner and outer ring divided spacer segments, having the load bearing portions, are simultaneously machined so as to have the same axially measured width. Along therewith, inner ring divided spacer segments, having no load bearing portions, are simultaneously machined so as to have the same axially measured width, thereby rendering the latter axially measured width to be larger than the former axially measured width by a quantity corresponding to the gap.Type: GrantFiled: October 30, 2008Date of Patent: December 25, 2012Assignee: NTN CorporationInventor: Hiroshi Takiuchi
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Patent number: 8302309Abstract: A method is directed to a production of a bearing device for a wheel including an inner member and an outer member rotatable relative to each other through a plurality of rolling elements, in which a component part forming one of the inner member and the outer member is a hot forged product. In the practice of this method, during or at the end of a hot forging step for hot forging the component part, a portion of the component part is cooled by spraying a coolant or by controlling an atmospheric temperature, to thereby render a matrix of the component part to represent a standard structure and render a surface portion of the component part to represent a non-standard structure.Type: GrantFiled: July 10, 2006Date of Patent: November 6, 2012Assignees: NTN Corporation, JFE Steel CorporationInventors: Isao Hirai, Kohei Yoshino, Takayasu Takubo, Kazuhiko Yoshida, Kazukuni Hase, Hideto Kimura, Kiyoshi Uwai, Takaaki Toyooka
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Patent number: 8225509Abstract: A method for making a robot pivot arm assembly includes forming from a rigid, machinable material a circular disk, and forming a circular aperture through the center of the disk. An outer bearing track is formed integrally in the inside surface which defines the aperture, and the apertured disk is positioned in a machining device with a fixturing portion that engages the outer bearing track. An integral outer race, an arm and a gear segment with teeth are then machined into the disk to form the outer portion of the pivot arm assembly. An inner race with an inner bearing track is positioned inside the integral outer race, and rolling bearing elements are inserted into the first and second bearing tracks.Type: GrantFiled: January 11, 2008Date of Patent: July 24, 2012Assignee: Kaydon CorporationInventors: William Daniel Schmidt, Scott A. Hansen, Gregory A. Clary, David S. Dailey
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Patent number: 8151465Abstract: A mounting system is disclosed for mounting a bearing assembly or other mechanical element to a shaft. The mounting system uses a tapered sleeve mechanism to secure the bearing assembly on the shaft. Specifically, a pressure loaded piston drives the sleeve from a pre-assembled position to an initial position. The initial position is determined by monitoring the pressure applied to the piston. Once the initial position has been reached, a linear indicator is used to measure the axial sleeve movement from the initial position to a final position. The system remains in place after the bearing is installed on the shaft and facilitates removal of the bearing assembly from the shaft.Type: GrantFiled: December 7, 2010Date of Patent: April 10, 2012Assignee: Baldor Electric CompanyInventor: William G. Hewitt
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Patent number: 8061038Abstract: A rolling bearing assembling method includes: providing a subassembly member in which a cage and an outer ring raceway of an outer ring are combined with each other; disposing a rotary member that includes groove portions formed on an outer circumference thereof, concentrically with the outer ring so that the plurality of groove portions confront respectively pockets of the cage; disposing a guide member including a guide hole, above the rotary member; supplying tapered rollers from the guide hole between the pockets and the groove portions, respectively; rotating the rotary member by a predetermined angle so that the tapered rollers are pushed radially outward by raised portions between the adjacent groove portions thereby accommodating the tapered rollers into the pockets, respectively; providing the seal ring on the inner ring raceway; and assembling the hub main body together with the outer ring.Type: GrantFiled: March 14, 2008Date of Patent: November 22, 2011Assignee: JTEKT CorporationInventors: Shigenori Shimizu, Yoshiaki Nagashio
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Patent number: 8042272Abstract: A thrust bearing assembly includes an upper thrust bearing and a lower thrust bearing for an engine assembly of a vehicle and which, are preferably, identically configured. The thrust bearings each include an arcuate bearing shell with a concave inner surface and a convex outer surface, and each includes a pair of axially spaced flanges extending radially outwardly of the bearing shells. The flanges may be formed as one piece with the bearing shell, and one flange is thicker than the other flange. The thicker flanges are load bearing and preferably contoured, whereas the thinner flanges are not. The bearings are installed with the thick flange of each bearing matched radially opposite the thin flange of the companion bearing to minimize fatigue and failure normally attributed to repeated seating and unseating of bearing assemblies having flanges of equal thickness caused by changing bending loads imparted by a shaft.Type: GrantFiled: February 13, 2008Date of Patent: October 25, 2011Assignee: Federal-Mogul World Wide Inc.Inventors: Sean M. Welch, Ronald J. Thompson
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Patent number: 8028415Abstract: A unitized pinion seal assembly has a seal portion and a sleeve portion that are assembled in an interference fit relationship. The unitized pinion seal assembly is assembled to a carrier bearing cage and an axle companion flange with proper spacing between non-sealing components, and without a spacer mounted between the two portions.Type: GrantFiled: February 15, 2010Date of Patent: October 4, 2011Assignee: Freudenberg-NOK General PartnershipInventor: Keith Clark
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Patent number: 8028409Abstract: In accordance with the method, a gas bearing is energized to center the piston in the cylinder prior to rigidly attaching the planar spring or springs between the piston and the compressor frame. This automatically and very accurately centers the piston in the cylinder to provide the added stiffness of a planar spring and gas bearing in an easily manufactured configuration. Various exemplary embodiments are disclosed, including embodiments having the piston cantilevered from one end using a single or multiple springs, an embodiment having a spring on each end of the piston, a double piston embodiment and embodiments using and not using the gas bearing during operation of the compressors.Type: GrantFiled: August 21, 2006Date of Patent: October 4, 2011Inventor: Mark Hanes
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Patent number: 7966730Abstract: A constant velocity joint in the form of a counter-track joint. The circumferential length (L1) of the first cage windows for the balls in the first pairs of tracks is greater than the circumferential length (L2) of the second cage windows for the balls in the second pairs of tracks. This permits a method of assembly wherein first the first balls, one after the other, are mounted in first pairs of tracks which widen from the aperture end to the attaching end and wherein then the second balls, one after the other, are mounted in second pairs of tracks which widen from the attaching end to the aperture end. For mounting the second balls in the second pairs of tracks, only a small overarticulation angle is necessary, and thus a shorter circumferential length of the respective windows than there is required for mounting the first balls in the first pairs of tracks.Type: GrantFiled: November 26, 2008Date of Patent: June 28, 2011Assignee: GKN Driveline International GmbHInventors: Stephan Maucher, Ida Hassenrik, Thomas Weckerling
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Patent number: 7950154Abstract: An assembly of a pair of roller bearings in which the inner bearing rings are axially spaced apart by a first member and the outer bearing rings are spaced apart by a second member with one of the inner or outer ring of each bearing being an axially outer bearing ring spaced axially further from the outer bearing than the other ring of that bearing. The method comprises forming an assembly of the two members and bearings in which one of the axially outer bearing ring is a loose fit on one of the first and second members, and then axially moving the axially outer bearing ring of the one bearing which is loose fit in a direction towards the other bearing to create a pre-load, and then increasing the degree of pre-load to effect elastic deformation of that ring and thereby create a shrink fit type interface load.Type: GrantFiled: March 25, 2002Date of Patent: May 31, 2011Assignee: Hansen Industrial Transmissions N.V.Inventor: Dirk-Olaf Leimann
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Patent number: 7866046Abstract: A method for manufacturing a hydrodynamic bearing (30) includes the following steps. First, a substrate having a surface with multiple protrusions thereon is formed. The protrusions are adapted for forming grooves in a preform. The preform, when finally processed, becomes a shaft of the hydrodynamic bearing or a bearing of the hydrodynamic bearing. Second, a feedstock of binder and powder is pushed to the surface of the substrate to form the perform on the surface of the substrate. Third, the substrate is removed from the preform. Fourth, the preform is sintered. Fifth, the preform is precision machined to obtain the shaft or the bearing, as the case may be. In the shaft or bearing, the grooves are for generating hydrodynamic pressure.Type: GrantFiled: January 26, 2007Date of Patent: January 11, 2011Assignee: Foxconn Technology Co., Ltd.Inventor: Chuen-Shu Hou
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Patent number: 7866047Abstract: In the manufacture of a sleeve unit (22), when a sleeve (221) is to be glued to a sleeve housing (222), an endfaces (225) of the sleeve (221) while abutting on a sleeve retainer (51) is spring-biased along the center axis J1 in the direction toward the sleeve retainer (51). Meanwhile, an endface (226) on a side of the sleeve housing (222) opposite from the endface (225) of the sleeve (221) while abutting on a sleeve-housing retainer (52) is spring-biased along the center axis J1 in the direction toward the sleeve-housing retainer (52).Type: GrantFiled: March 17, 2006Date of Patent: January 11, 2011Assignee: Nidec CorporationInventor: Takehito Tamaoka
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Publication number: 20100299926Abstract: A method and an apparatus for setting bearing play or prestress of anti-friction bearing arrangements with at least two outer or inner rings which are adjustable axially with respect to one another, at least two inner or outer rings fixed axially with respect to one another, and rolling bodies arranged between them. The rolling bodies roll on rolling tracks of the bearing rings and are guided in cages in which markings are arranged on at least one rolling body. A sensor is attached to a cage and an evaluation unit is coupled to the sensor. To set the prestress and bearing play, the bearing arrangement is loaded with an axial force or tilting moment. The bearing arrangement is rotated by at least one full revolution, the rolling-body rotation is recorded by a sensor, and the outer or inner rings are adjusted in relation to the predefined prestress or hearing play.Type: ApplicationFiled: October 21, 2008Publication date: December 2, 2010Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KGInventor: Rupert Stitzinger
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Publication number: 20100247016Abstract: A driveline assembly may include a driveline component housing, a pinion shaft located within the housing, a first bearing assembly, a second bearing assembly, a spacer assembly, and a load adjustment member. The spacer assembly may be located axially between the first and second bearing assemblies and may include first and second members. The first member may be axially fixed on the pinion shaft and may include an axial end defining a first generally conical surface. The second member may include a first axial end engaged with the second bearing assembly and a second axial end defining a second generally conical surface abutting the first generally conical surface. The load adjustment member may be axially displaceable relative to the pinion shaft to advance the second member axially along the first generally conical surface of the first member and adjust a preload on the second bearing assembly.Type: ApplicationFiled: March 24, 2009Publication date: September 30, 2010Inventors: ERIC Alan RIVETT, Mike Bommarito
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Patent number: 7721419Abstract: A full complement taper roller bearing consists of an inner ring or cone having an inner track on its radially outer conical surface, and an outer ring or cup having an outer track on its radially inward conical surface and one or more rows of taper rollers having a contact angle of less than 30 degrees freely disposed between the inner and outer rings and guided between said tracks. Each row of rollers is axially located within a recess on the inner track defined by a shoulder abutment disposed at least at the edge of the inner track having the greatest diameter and each of the rollers is in contact with the inner track over the entire length of the taper roller in the axial direction of the bearing. A method of assembly is also enclosed.Type: GrantFiled: June 9, 2008Date of Patent: May 25, 2010Assignee: Hansen Transmissions International, N.V.Inventor: Dirk-Olaf Leimann
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Patent number: 7675211Abstract: A method of assembling a rotor shaft assembly is provided. The method includes assembling a self-aligning bearing seat from a first assembly and a second assembly such that the self-aligning bearing seat substantially circumscribes a rotor shaft. The method also includes creating an interface defined between the first assembly and the second assembly, such that when the rotor shaft experiences misalignment the interface accommodates misalignment of the rotor shaft.Type: GrantFiled: March 6, 2007Date of Patent: March 9, 2010Assignee: General Electric CompanyInventors: Paul Stephen Dimascio, Bradley Graham Moore, Roman Kolar