Lubricating Patents (Class 384/606)
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Patent number: 11661796Abstract: A bearing assembly having independently rotatable concentric inner and outer tubes. A bearing chamber containing multiple bearings is disposed between the tubes, allowing thrust but not rotation to be transferred between them. The bearing chamber is sealed from the inside of the inner tube. To prevent high pressure fluid from leaking from the inner tube to an exterior of the tool through the bearing chamber, damaging components, a flow path is formed. An annular piston responds to high pressure within the bearing chamber and the inner tube, opening a flow path from the inner tube to the environment.Type: GrantFiled: August 9, 2021Date of Patent: May 30, 2023Assignee: The Charles Machine Works, Inc.Inventor: Greg L. Slaughter, Jr.
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Patent number: 10731713Abstract: A power operated trimming tool including a head assembly affixed to a handle assembly. The head assembly includes a frame body supporting a feed roll, a blade, a blade support and a blade retainer plate. The frame body includes an interface portion affixed to the handle assembly and a support portion extending from the interface portion. The blade support includes a cross member defining a blade support plate receiving the blade. The blade retainer plate is pivotally coupled to the frame body, in a first position, the blade retainer plate overlies the blade and, in a second position, the blade retainer plate is spaced from the blade. An in-line, clutch engagement assembly provides a pair of clutch engagement plates coupled between a flexible shaft drive transmission and a driver assembly insertable into the handle assembly of the tool to provide one-handed actuation and de-actuation of the feed roll.Type: GrantFiled: January 18, 2019Date of Patent: August 4, 2020Assignee: Bettcher Industries, Inc.Inventors: Matthew D. Gall, Bernard J. Esarey
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Patent number: 10363995Abstract: A bearing system including a wheel assembly transmitting load to a damping assembly, wherein the wheel assembly is configured to rotate angularly relative to the damping assembly.Type: GrantFiled: December 1, 2017Date of Patent: July 30, 2019Assignee: Framo Engineering ASInventors: Ketil Boe, Stig Skauge, Lars Seim
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Patent number: 10016767Abstract: Centrifugation systems are provided that have a non-contact seal assemblies including an upper guard and a skirted pivot, as well as a pressure source that provides a gas flow between the upper guard and a surface of the skirted pivot. In some embodiments, the non-contact seal assembly further includes a lower guard having one or more capillary channels defined on an upper surface.Type: GrantFiled: January 22, 2015Date of Patent: July 10, 2018Assignee: Alfa Wassermann, Inc.Inventors: Kurt Michael Spiegel, Eric Bernard Weiland
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Patent number: 9752536Abstract: A turbocharger includes a turbine, a compressor, and a bearing housing forming a bearing bore. A bearing arrangement is disposed between a shaft interconnecting the turbine and compressor wheels, and the bearing housing. The bearing arrangement includes an outer bearing race element and an inner bearing race element rotatably disposed within the outer bearing race element. The inner bearing race element forms a hollow extension extending up to the compressor wheel, the extension having a hollow cylindrical shape that surrounds a portion of the shaft that is connected on one end to the compressor wheel and at another end is disposed adjacent to a seat formed on the extension portion around the shaft, and a nut engaged on the shaft and disposed within the extension at an offset distance from the seat.Type: GrantFiled: March 9, 2015Date of Patent: September 5, 2017Assignee: Caterpillar Inc.Inventors: Richard E. Annati, Gary W. Powers, Jeffrey W. McCormack, Thomas J. Williams
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Patent number: 9739238Abstract: A turbocharger includes a turbine, a compressor, and a bearing housing forming a bearing bore. A bearing arrangement is disposed between a shaft interconnecting the turbine and compressor wheels, and the bearing housing. The bearing arrangement includes first and second bearings formed between an outer bearing race element disposed within the bearing bore an inner bearing race element disposed within the outer bearing race element and between the outer bearing race element and the shaft. The inner bearing race element includes a flared portion extending radially outwardly to provide torsional and bending rigidity to the shaft.Type: GrantFiled: March 9, 2015Date of Patent: August 22, 2017Assignee: Caterpillar Inc.Inventors: Richard E. Annati, Thomas J. Williams
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Patent number: 9683520Abstract: A turbocharger includes a turbine, a compressor, and a bearing housing forming a bearing bore. A bearing arrangement is disposed between a shaft interconnecting the turbine and compressor wheels, and the bearing housing. The bearing arrangement includes first and second bearings formed between an outer bearing race element disposed within the bearing bore an inner bearing race element disposed within the outer bearing race element and between the outer bearing race element and the shaft. The inner bearing race element rotates with the shaft and forms an extension segment having an open channel that, together with an annular surface on an inner side of a back of the compressor wheel, forms a U-shaped channel into which a ring seal is disposed. The ring seal sealably engages the inner bearing race element and also slidably and sealably engages the inner bore of the bearing retainer.Type: GrantFiled: March 9, 2015Date of Patent: June 20, 2017Assignee: Caterpillar Inc.Inventors: Richard E. Annati, Gary W. Powers, Jeffrey W. McCormack, Gregg Williams, Thomas J. Williams
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Patent number: 9677604Abstract: A bearing device, including: a first housing including a first interior surface with a first portion and an exterior surface; a second housing including a second interior surface with a second portion and an exterior surface; a bearing assembly including a first ring connected to the first interior surface, a second ring connected to the second interior surface and a rolling element between the rings; a first space between first and second portions of the first and second interior surfaces, respectively and extending from the first and second exterior surface to the bearing assembly; and at least one first layer of a hydrophobic material adhered to and covering at least a first segment of the first portion; or a second segment of the second portion. The first segment includes less than an entirety of the first portion, and the second segment includes less than an entirety of the second portion.Type: GrantFiled: July 20, 2015Date of Patent: June 13, 2017Assignee: Schaeffler Technologies AG & Co. KGInventors: Robert Weiss, II, Emily Bygrave
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Patent number: 9651092Abstract: A bearing arrangement includes: first and second thrust bearings, arranged on a shaft and including respective first and second pressure faces; and a hydraulic connection, connecting the first and second thrust bearings and having a non-compressible fluid. Applying a shaft thrust load axially moves the first thrust bearing so that the first pressure face displaces the non-compressible fluid from the first thrust bearing to the second thrust bearing so as to apply a reaction force to the second pressure face, in order that the thrust load is shared between the first and second thrust bearings.Type: GrantFiled: February 25, 2015Date of Patent: May 16, 2017Assignee: ROLLS-ROYCE plcInventors: Stephen Gallimore, John Richard Webster
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Patent number: 9291014Abstract: A bearing assembly comprises a bearing enabling a rotatable body to rotate about a rotational axis relative to a stationary body. The bearing includes a bearing inner ring and a bearing outer ring, each having at least first and second roller body tracks provided in or on non-parallel surfaces of the ring. The respective roller body tracks of the bearing outer ring are aligned with the respective roller body tracks of the bearing inner ring and a row of roller bodies is disposed between each of the respective sets of roller body tracks. At least one of the rows of roller bodies comprises one of tapered rollers and spherical rollers, at least one of the rows of roller bodies supports at least axial forces and at least one of the rows of the roller bodies supports at least radial forces.Type: GrantFiled: May 21, 2010Date of Patent: March 22, 2016Assignee: AKTIEBOLAGET SKFInventors: Siegfried Derrer, Reinhard Kirsch, Edgar Pickel
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Publication number: 20150104127Abstract: An apparatus for lubricating power transfer components is described. The apparatus includes a first shaft enclosed by a housing with a main cavity, and an inboard bearing and an outboard bearing supporting the first shaft. An inboard bearing cavity and an outboard bearing cavity surround, respectively, the inboard and outboard bearings. Lubrication fluid flows from an entrance port in the housing, through a flow passage within a wall of the housing to the inboard bearing cavity, through a flow passage within the first shaft from the inboard bearing cavity to the outboard bearing cavity, and through an overflow port in a wall of the outboard bearing cavity. A second shaft provides rotational power to the first shaft (e.g., via an idler gear). A lubrication deflector, such as a frustoconical deflector, surrounds a portion of a second shaft and extends into the main cavity of the housing.Type: ApplicationFiled: October 14, 2013Publication date: April 16, 2015Applicant: Deere & CompanyInventors: Jeff Lubben, Peter J. Murfey
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Patent number: 8915465Abstract: A rotor system is disclosed for a reactive drive rotary wing aircraft. Rigidity of the rotor is enhanced and play between flight controls and the rotor are eliminated by mounting swashplate actuators to a flange rigidly secured to the mast. Thermal management of the rotor is performed in order to avoid bearing failure or loss of bearing preload. Methods include modulating the temperature of oil pumped over one or more of the mast bearing, swashplate bearing, and spindle bearing. The temperature of air passively or actively drawn through rotor may also be modulated to maintain bearing temperature within a predetermined range. Structures for reducing pressure losses and drag on components due to air flow through the rotor are also disclosed. Thermal management of a rotor may be performed by oil and air flow.Type: GrantFiled: September 7, 2011Date of Patent: December 23, 2014Assignee: Groen Brothers Aviation, Inc.Inventor: Jacob Johannes van der Westhuizen
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Patent number: 8870464Abstract: A ball bearing includes: an outer ring; an inner ring having a ring-shaped member fitted portion that has a step portion that extends generally along a radial direction of the outer ring and an outer peripheral face portion; balls disposed between an inner periphery raceway groove of the outer ring and an outer periphery raceway groove of the inner ring; and a ring-shaped lubricant supply member that is fixed to the ring-shaped member fitted portion while being in contact with the step portion.Type: GrantFiled: November 22, 2013Date of Patent: October 28, 2014Assignee: Jtekt CorporationInventors: Koji Yoshizaki, Junji Murata
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Patent number: 8858086Abstract: A bearing includes an inner ring, an outer ring, and a plurality of rolling elements. In the bearing, each of an inner ring raceway surface and an outer ring raceway surface has a contact area that comes into contact with the rolling elements, and a non-contact area that is formed adjacent to an outer side of an end portion of the contact area and does not come into contact with the rolling elements. A lubricant retaining portion having a recessed portion and a large number of non-uniform projections and depressions is formed at the non-contact area of at least one of the inner ring raceway surface and the outer ring raceway surface.Type: GrantFiled: September 12, 2013Date of Patent: October 14, 2014Assignee: Jtekt CorporationInventor: Junji Murata
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Patent number: 8794846Abstract: Vertical motors having a thrust bearing and an oil deflector positioned in an oil sump in which the thrust bearing is located are disclosed. Oil flowing through the thrust bearing may be spread across the oil deflector and directed down along an inside surface of a wall of the oil sump to allow the oil to cool. The oil deflector may be polished sheet metal. In some embodiments, a plurality of fins may be arranged around an outside surface of the wall to provide additional heat exchange. A fan may additionally be provided to direct air flow between the plurality of fins to further facilitate the heat exchange. Methods of cooling a thrust bearing in a vertical motor are also provided, as are other aspects.Type: GrantFiled: October 2, 2012Date of Patent: August 5, 2014Assignee: Siemens Industry, Inc.Inventor: Emam Hashish
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Patent number: 8690442Abstract: A bearing for attaching a wind turbine blade to a wind turbine hub, includes a stationary ring, a movable ring which can rotate relative to the stationary ring, a grease lubrication structure, and a canister for collecting grease. The grease lubrication structure forms an outlet for releasing grease from a space between the stationary ring and the movable ring and the canister comprises an inner space with at least one inlet in releasable fluid communication with the outlet. The outlet and the inlet comprise cooperating coupling elements adapted for releasable snap-connection of the outlet to the inlet. Due to the snap-connection, the canister is easily removed and replaced in connection with maintenance of the wind turbine even though the space in the hub is typically very limited.Type: GrantFiled: April 23, 2010Date of Patent: April 8, 2014Assignee: Vestas Wind Systems A/SInventors: Torben Friis Baun, Jesper Lykkegaard Andersen, Lasse Mygind Laursen
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Publication number: 20140093201Abstract: Vertical motors having a thrust bearing and an oil deflector positioned in an oil sump in which the thrust bearing is located are disclosed. Oil flowing through the thrust bearing may be spread across the oil deflector and directed down along an inside surface of a wall of the oil sump to allow the oil to cool. The oil deflector may be polished sheet metal. In some embodiments, a plurality of fins may be arranged around an outside surface of the wall to provide additional heat exchange. A fan may additionally be provided to direct air flow between the plurality of fins to further facilitate the heat exchange. Methods of cooling a thrust bearing in a vertical motor are also provided, as are other aspects.Type: ApplicationFiled: October 2, 2012Publication date: April 3, 2014Applicant: SIEMENS INDUSTRY, INC.Inventor: Emam Hashish
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Patent number: 8622622Abstract: An antifriction bearing for a turbocharger, which has an outer ring with an annular inner face and an inner ring with an outer face which is parallel to the inner face, and a rolling body cage with a single annular part arranged radially between the outer and inner ring with one cage guiding face which is parallel to the inner face of the outer ring and an inner surface which is parallel to the outer face of the inner ring, and with closed rolling body pockets which are distributed over the circumference and rolling bodies received in the pockets. To provide hydraulic damping and reduced friction, the annular part is provided in the region of the cage guiding face with at least one radial recess outside the rolling body pockets, which can be formed by apertures, cutouts or grooves in the cage guiding face.Type: GrantFiled: May 14, 2010Date of Patent: January 7, 2014Assignee: Schaeffler Technologies AG & Co. KGInventors: Peter Solfrank, Christian Schaefer, Christopher Mitchell, Heiko Schmidt
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Patent number: 8540433Abstract: A bearing (4) includes an outer ring (6), rolling elements (5) and a two-part inner ring (A). The two-part inner ring (A) includes a first part (1) having a radially outer surface (11) and an inner bore (12). Furthermore, the two-part inner ring (A) includes a second part (2) having a radially inner surface (21) and at least one raceway (22) for rolling elements. The radially outer surface (11) of the first part (1) essentially matches the radially inner surface (21) of the second part (2). A cavity (3), which in use acts as a pressure chamber, is located between the first and second parts (1, 2). When pressurizing the cavity (3), a relative axial movement between the first and second parts (1, 2) is accomplished.Type: GrantFiled: August 29, 2008Date of Patent: September 24, 2013Assignee: Aktiebolaget SKFInventors: Hans Wendeberg, Håkan Leander
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Patent number: 8511906Abstract: A bearing assembly for a mud motor has a mandrel rotatably disposed within a cylindrical housing, with a rolling-element thrust bearing disposed within an oil-sealed annular chamber between the mandrel and the housing, for resisting on-bottom axial thrust loads. Off-bottom axial thrust loads are resisted by a mud-lubricated thrust bearing assembly located above the oil-sealed chamber. The lower end of a drive shaft adapter coupled to the mandrel is used to provide an upper load-transferring shoulder for the off-bottom thrust bearing, with a lower load-transferring shoulder being provided in association with the housing. The upper and lower shoulders come into mating contact under off-bottom thrust loading, with the upper shoulder rotatable (with the mandrel) relative to the lower shoulder.Type: GrantFiled: January 27, 2011Date of Patent: August 20, 2013Assignee: National Oilwell Varco, L.P.Inventor: Nicholas Marchand
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Patent number: 8499664Abstract: A cover plate for a drive assembly that includes a bearing housing having a bearing cavity, a thrust bearing axially disposed within the bearing cavity that includes a cup, cone and plurality of rollers disposed between cup and cone raceways, a thrust plate with an axle engaging surface disposed perpendicular to a central axis and coupled for rotation to the cone. The cover plate may be connected to a final drive housing of a final drive that includes a plurality of gears operatively connected to an axle shaft, the end of the axle shaft positioned to rotationally engage the thrust plate and cone.Type: GrantFiled: September 25, 2009Date of Patent: August 6, 2013Assignee: Caterpillar Inc.Inventors: David M. White, Christopher G. Oakley, Keith A. Kabrick
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Patent number: 8491195Abstract: A rolling bearing device includes a rolling bearing unit having rolling elements retained by an annular retainer and intervening between raceways of inner and outer rings, and a nozzle member provided proximate to the outer ring. The nozzle member is provided with an annular collar portion inserted in a bearing space delimited between the inner ring and the outer ring and having a nozzle hole. This collar portion has an outer diametric surface in the form of a retainer guide surface, and an inner diametric surface of the retainer is guided by this retainer guide surface.Type: GrantFiled: August 19, 2008Date of Patent: July 23, 2013Assignee: NTN CorporationInventors: Takuji Kobayashi, Masatsugu Mori
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Patent number: 8459873Abstract: A self-lubricating composite bearing includes a casing and a bearing set. The bearing set comprises at least two bearing members. The casing axially defines an accommodation space through two opposite ends thereof for mounting the bearing set therein. An axial hole is defined through two opposite ends of the bearing set for the insertion of a shaft. The bearing set includes at least one neck portion. At least one storage chamber is defined between an inner surface of the casing and an outer surface of the at least one neck portion of the bearing set and stores a higher viscosity lubricant therein. At least one fine flow passage is defined through the at least one neck portion of the bearing set. The at least one storage chamber is in fluid communication with the axial hole of the bearing set via the at least one fine flow passage.Type: GrantFiled: November 23, 2009Date of Patent: June 11, 2013Assignee: Newcara Technology Co., Ltd.Inventors: Han-Ching Liu, Lung-Wei Huang
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Patent number: 8376623Abstract: A bearing lubricating structure for a rotating shaft includes: a pair of bearings that are disposed spaced-apart in an axial direction within a support case, for rotatably supporting the predetermined rotating shaft around an axis thereof; and an oil supply port that is disposed on the support case, for supplying lubricating oil for lubricating the pair of bearings to between the pair of bearings, between the pair of bearings and between the oil supply port and the rotating shaft, a separator being disposed in the axial direction, for receiving the lubricating oil supplied from the oil supply port to prevent the lubricating oil from directly adhering to the rotating shaft, the separator being integrally fixed to the support case, and the separator having at its axially opposite ends thereof a pair of sidewalls confronting the pair of bearings and projecting from the opposite ends toward an inner circumferential surface of the support case to be in intimate contact with the inner circumferential surface, and tType: GrantFiled: March 9, 2009Date of Patent: February 19, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventor: Daisuke Shibagaki
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Patent number: 8287259Abstract: An oil-cooled type screw compressor includes shafts mounted on rotors in a casing and extended to two sides of the rotors. Thrust plates rotate with the shafts. The thrust plates are sealed while spacing them from the rotors and define first and second spaces. Thrust bearings are arranged in the first and second spaces. An oil feed passage communicates with the one of the first and second spaces that is located on the side to apply a force against the thrust force to the thrust plates when boosted. An oil discharge passage communicates with the one of the first and second spaces that is located on the side to apply a force against the anti-thrust force to the thrust plates when boosted, to establish the communication between the space inside and an oil discharge target. An oil distribution passage distributes oil between the first space and the second space.Type: GrantFiled: February 4, 2009Date of Patent: October 16, 2012Assignee: Kobe Steel, Ltd.Inventor: Shoji Yoshimura
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Publication number: 20120219403Abstract: A bearing assembly, a pump with a bearing assembly and a method of lubricating a pump bearing using a bearing assembly. The bearing assembly includes a bearing carrier and a bearing housing that are rotatably connected to one another to permit axial adjustment of the pump's impeller or other fluid-conveying apparatus, as well as variable rotational positioning of the bearing carrier relative to a pump housing. Numerous lubricant access apertures placed around the periphery of the bearing carrier facilitate lubricant passage from a connection on the bearing housing to the bearings, regardless of the rotational position of the carrier relative to the bearing housing or other pump structure.Type: ApplicationFiled: February 22, 2012Publication date: August 30, 2012Inventors: Philip Richard Riley, Sarath Atayilveetil, John Roger Bower
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Publication number: 20120195542Abstract: A bearing assembly for a mud motor has a mandrel rotatably disposed within a cylindrical housing, with a rolling-element thrust bearing disposed within an oil-sealed annular chamber between the mandrel and the housing, for resisting on-bottom axial thrust loads. Off-bottom axial thrust loads are resisted by a mud-lubricated thrust bearing assembly located above the oil-sealed chamber. The lower end of a drive shaft adapter coupled to the mandrel is used to provide an upper load-transferring shoulder for the off-bottom thrust bearing, with a lower load-transferring shoulder being provided in association with the housing. The upper and lower shoulders come into mating contact under off-bottom thrust loading, with the upper shoulder rotatable (with the mandrel) relative to the lower shoulder.Type: ApplicationFiled: January 27, 2011Publication date: August 2, 2012Applicant: NATIONAL OILWELL VARCO, L.P.Inventor: Nicholas Marchand
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Patent number: 8181720Abstract: A bearing assembly for a downhole motor comprises a housing having an upper end, a lower end, a radially inner surface, and a radially outer surface. In addition, the bearing assembly comprises a mandrel rotatably disposed within the housing. Further, the bearing assembly comprises an upper seal assembly, a lower seal assembly, and a thrust bearing assembly, each radially positioned between the housing and the mandrel. The bearing assembly also comprises a lubricating fluid radially disposed between the housing and the mandrel. The lower end of the housing comprises a first check valve radially positioned between the radially inner surface and the radially outer surface of the housing. The check valve is in fluid communication with the lubricating fluid and is adapted to allow at least a portion of the lubricant to exit the bearing assembly at a predetermined pressure differential.Type: GrantFiled: June 25, 2010Date of Patent: May 22, 2012Assignee: National Oilwell Varco, L.P.Inventors: Jonathan Ryan Prill, Frederick Pheasey
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Patent number: 8087507Abstract: A release bearing assembly has a roller bearing, an enclosure and a slinger. The enclosure has first and second flange portions. The slinger has a body portion sized for radial disposition within an inner diameter of the first flange portion. A lip portion extends from the body portion and defines a channel between itself and the enclosure.Type: GrantFiled: November 26, 2008Date of Patent: January 3, 2012Assignee: Eaton CorporationInventors: Dean Alan Geiger, Troy Scott Reinoehl, Robb Edward Grostefon, Arif Husain Mirza, Brent Allen Savage, Daniel Vern Gochenour, Steven Eric McCutcheon, James L. Whitaker
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Publication number: 20110293214Abstract: The invention relates to a rolling bearing 1 comprising a lower ring 3 mounted inside a lower annular cup 6, an upper ring 2 mounted inside an upper annular cup 7, and at least one row of rolling elements 4 positioned between raceways defined by lower and upper rings. One of the annular cups has at least one annular skirt 6d partly inserted within at least one annular groove 7m provided in the other annular cup, thus forming a sinuous chamber 8, and the sinuous chamber is at least partly filled with at least one waterproof grease material 9.Type: ApplicationFiled: December 1, 2008Publication date: December 1, 2011Inventors: Christophe Houdayer, Sylvain Bussit, Richard Corbett, Samuel Viault, Bruno Montboeuf
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Publication number: 20110274383Abstract: A bearing, in particular for a wind turbine, is provided. The bearing has a standing inner ring, an outer ring movable around the inner ring, lubricated rollers in a cage, arranged between the inner ring and the outer ring. The bearing includes a device for draining oil from a top region of the standing inner ring.Type: ApplicationFiled: May 3, 2011Publication date: November 10, 2011Inventor: Niels Karl Frydendal
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Patent number: 8021051Abstract: A sleeve bearing assembly and method of construction therefore has an inner portion constructed from a plurality of yarns to provide a journal bearing surface for receipt of a journal for relative movement therein and an elastic outer portion injection molded at least partially about the inner portion. The plurality of yarns are woven together with at least some of the yarns being woven in a warp direction corresponding to a length of the journal bearing surface and in a weft direction corresponding to a circumferential direction of the journal bearing surface to form a backing of the inner portion. At least one of the plurality of yarns is provided as a self-lubricating yarn woven with the backing in a weft direction to substantially form the bearing surface radially inwardly of the backing.Type: GrantFiled: June 27, 2007Date of Patent: September 20, 2011Assignee: Federal-Mogul World Wide, Inc.Inventor: Benjamin B. James
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Patent number: 8002472Abstract: A slew bearing system includes a first bearing ring and a second bearing ring concentrically positioned relative to each other forming at least upper and lower raceways there between, a plurality of bearing rollers positioned in each raceway between the first bearing ring and the second bearing ring, a plurality of delivery nozzles capable of delivering an air and oil mixture into the raceways adjacent the upper raceway, passages capable of fluidly communicating the air and oil mixture through the raceways and collecting some oil from the mixture adjacent the lower raceway, seals capable of regulating air flow through the passages and inhibiting outflow of oil from the raceways, and at least one exit port capable of outward flow of air and oil from the raceways adjacent the lower raceway.Type: GrantFiled: June 30, 2008Date of Patent: August 23, 2011Assignee: Nucor CorporationInventors: Jeff Craig, Jeff Blankenship, Cory Mecham, Randall J. McNeil
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Publication number: 20110158803Abstract: A bearing arrangement which has a double-row rolling-body bearing, in particular an angular ball bearing for a turbocharger. The rolling-body bearing has at least one outer ring and at least one inner ring between which an intermediate space for two rows of rolling bodies is formed. For reliable and disruption-free lubrication, the rolling-body bearing has a central feed opening formed on the outer ring and at least one outlet opening, lying opposite the central feed opening, on the inner ring for a lubricant. In the vicinity of each of the rows of rolling bodies, at least one feed opening is provided on the inner ring for feeding the lubricant to the rolling bodies so that the lubricant is injected via the inner ring and the centrifugal force during the operation of the bearing is utilized.Type: ApplicationFiled: April 7, 2009Publication date: June 30, 2011Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KGInventors: Wilhelm Sebald, Ernst Masur
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Patent number: 7922397Abstract: A bump stop device comprises a bearing 20 provided with two bottom 22 and top 24 metal washers between which rolling bodies 26 are arranged. A friction ring 34 is fixed to the first of the bottom and top metal washers and rubs against the other metal washer in order to create a static frictional torque that is greater than that of the rolling bodies and, in practice, greater than 1 Nm. The friction ring 34 makes it possible to generate a controlled resisting torque that limits the transmission to the steering column of the torque generated when driving the vehicle on a convex road.Type: GrantFiled: November 21, 2007Date of Patent: April 12, 2011Assignee: S.N.R. RoulementsInventors: Jean-Michel Beauprez, Fabien Corlet, Ludovic Saunier
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Publication number: 20110075960Abstract: A cover plate for a drive assembly that includes a bearing housing having a bearing cavity, a thrust bearing axially disposed within the bearing cavity that includes a cup, cone and plurality of rollers disposed between cup and cone raceways, a thrust plate with an axle engaging surface disposed perpendicular to a central axis and coupled for rotation to the cone. The cover plate may be connected to a final drive housing of a final drive that includes a plurality of gears operatively connected to an axle shaft, the end of the axle shaft positioned to rotationally engage the thrust plate and cone.Type: ApplicationFiled: September 25, 2009Publication date: March 31, 2011Applicant: Caterpillar Inc.Inventors: David M. White, Christopher G. Oakley, Keith A. Kabrick
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Publication number: 20110052389Abstract: A method for producing a lubricant feed in an axial bearing, wherein the lubricant feed is designed as a channel guiding lubricant from a lubricant pocket of the axial bearing, includes the following steps: preparing an initial axial bearing mold, stamping a groove in the area of the initial mold in which the channel is planned; embossing and putting through material on at least one or both sides of the groove along at least one segment of the groove; stamping the material on the side of the groove toward the groove so that the material and the groove form the channel.Type: ApplicationFiled: September 16, 2008Publication date: March 3, 2011Applicant: CONTINENTAL AUTOMOTIVE GMBHInventors: Dirk Frankenstein, Dag Hauschild, Johann Hauser, Jochen Held, Stefan Nowack, Konrad Viessmann
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Publication number: 20110012455Abstract: A bearing (10) for use in a downhole motor assembly having an inner race (12) formed as a unitary construction. The inner race (12) has an inner surface (14) defining a first diameter (D1) and an outer surface (16) defining an second diameter (D2) and a number of race-ways (18). The bearing (10) also has an outer race (20) having an inner surface (22) defining a first diameter (D3), an outer surface (26) defining a second diameter (D4) and a number of race-ways (28). Bearing elements (30) are provided in the raceways (18, 28) to couple the inner race (12) and the outer race (20) such that, in use, the inner race (12) and the outer race (20) can rotate relative to each other. The inner race (12) of the bearing (10) is configured so that an inner diameter of the inner race is outside a drill through of a downhole motor assembly.Type: ApplicationFiled: July 16, 2010Publication date: January 20, 2011Inventor: Edward Docherty Scott
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Publication number: 20100326730Abstract: A bearing assembly for a downhole motor comprises a housing having an upper end, a lower end, a radially inner surface, and a radially outer surface. In addition, the bearing assembly comprises a mandrel rotatably disposed within the housing. Further, the bearing assembly comprises an upper seal assembly, a lower seal assembly, and a thrust bearing assembly, each radially positioned between the housing and the mandrel. The bearing assembly also comprises a lubricating fluid radially disposed between the housing and the mandrel. The lower end of the housing comprises a first check valve radially positioned between the radially inner surface and the radially outer surface of the housing. The check valve is in fluid communication with the lubricating fluid and is adapted to allow at least a portion of the lubricant to exit the bearing assembly at a predetermined pressure differential.Type: ApplicationFiled: June 25, 2010Publication date: December 30, 2010Applicant: NATIONAL OILWELL VARCO, L.P.Inventors: Jonathan Ryan Prill, Frederick Pheasey
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Patent number: 7748499Abstract: A lubrication flow control mechanism for a power transmission includes a bearing member and a spring biasing the bearing member in a direction. The bearing member and the spring cooperate to sufficiently restrict flow past the bearing to cause increased fluid flow to a lubrication-requiring member located downstream of the bearing. A method of limiting lubrication flow in a transmission is also provided.Type: GrantFiled: May 18, 2005Date of Patent: July 6, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Ted T. Selever, William J. Crecelius
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Patent number: 7712595Abstract: A clutch release bearing assembly is provided that includes a housing that encloses a bearing, release sleeve and bushing. The housing defines a reservoir for grease that is supplied to the bearing and bushing. Slots are provided in the release sleeve through which grease is provided to the bushing and the input shaft through holes formed in the bushing. An end cap seal prevents contaminants from entering the clutch release bearing assembly on one end and a multi-lip seal is provided between the housing and release sleeve on the other end of the housing.Type: GrantFiled: February 20, 2007Date of Patent: May 11, 2010Assignee: Eaton CorporationInventors: Steven E. McCutcheon, James L. Whitaker
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Publication number: 20090324151Abstract: A slew bearing system includes a first bearing ring and a second bearing ring concentrically positioned relative to each other forming at least upper and lower raceways there between, a plurality of bearing rollers positioned in each raceway between the first bearing ring and the second bearing ring, a plurality of delivery nozzles capable of delivering an air and oil mixture into the raceways adjacent the upper raceway, passages capable of fluidly communicating the air and oil mixture through the raceways and collecting some oil from the mixture adjacent the lower raceway, seals capable of regulating air flow through the passages and inhibiting outflow of oil from the raceways, and at least one exit port capable of outward flow of air and oil from the raceways adjacent the lower raceway.Type: ApplicationFiled: June 30, 2008Publication date: December 31, 2009Applicant: NUCOR CORPORATIONInventors: Jeff Craig, Jeff Blankenship, Cory Mecham, Randall J. McNeil
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Publication number: 20090274407Abstract: The present invention provides a rolling bearing, for a tenter clip, which is capable of restraining deterioration of a sealing member even though the sealing member contacts ester oil, and is excellent in reliability and durability at high temperatures. A periphery of an outer ring of the rolling bearing for use in the tenter clip of a film-stretching apparatus is lubricated with the ester oil.Type: ApplicationFiled: January 23, 2007Publication date: November 5, 2009Applicant: NTN CORPORATIONInventors: Masaki Egami, Yosuke Oya
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Patent number: 7182521Abstract: An axial roller bearing includes two bearing disks placed in plane-parallel relationship to one another. Each bearing disk has a radial section to form a raceway and an axial collar connected to the radial section, wherein the collar of one bearing disk and the collar of the other bearing disk overlap one another. The axial collars are arranged on an inner or outer peripheral edge of the bearing disks and have breaches to define at least one opening of variable size in dependence on a relative rotation of the bearing disks in circumferential direction. A cage is disposed between the bearing disks for accommodating rolling elements.Type: GrantFiled: April 15, 2005Date of Patent: February 27, 2007Assignee: Ina-Schaeffler KGInventors: Leo Müntnich, Wolfgang Fugel, Alexander Reimchen
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Patent number: 7104766Abstract: The present invention provides a thrust bearing assembly and a horizontal skid utilized in a horizontal pumping system. In one embodiment, the thrust bearing assembly comprises a cylindrical open housing, at least one radial ball bearing, at least one rotating seal, and at least one axial thrust bearing. The axial thrust bearing does not have to be completely submerged in lubricant.Type: GrantFiled: May 23, 2003Date of Patent: September 12, 2006Assignee: Schlumberger Technology CorporationInventor: James V. Mascola
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Patent number: 7036991Abstract: A spindle assembly (20) adapted to be mounted on the rotatable head (21) of a Davenport® multi-spindle automatic screw machine, broadly includes a one-piece outer spindle (38), a seal member (39), a front bearing assembly (40A, 40B, 40C), a front bearing retainer nut (41) forming with the seal member a tortuous passageway (85), a two-part spacer (37), a rear bearing assembly (44A, 44B), and a rear bearing retainer nut (45).Type: GrantFiled: July 20, 2004Date of Patent: May 2, 2006Assignee: Davenport Machine, Inc.Inventor: Sandro G. Belpanno
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Patent number: 6626795Abstract: The toroidal-type continuously variable transmission comprises an input shaft, an input disk, an output disk, a plurality of trunnions, a plurality of power rollers, and power roller bearings, wherein the mutually opposed inner surfaces of the input and output disks are respectively formed as concave surfaces each having an arc-shaped section, the peripheral surfaces of the power rollers are respectively formed as spherical-shaped convex surfaces, and these peripheral surfaces are contacted with the above-mentioned inner surfaces. The retainer of the power roller bearing is formed of high strength brass, and the high strength brass has a micro structure in which the &agr; phase thereof is 40% or more in the area ratio thereof, and the hardness of said retainer is set at HB80 or higher.Type: GrantFiled: January 22, 2002Date of Patent: September 30, 2003Assignee: NSK Ltd.Inventor: Tomonobu Yoshikawa
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Publication number: 20030179970Abstract: An exchangeable lubricant cartridge for a step bearing of an open-end spinning rotor is disclosed. The lubricant cartridge comprises a chamber containing lubricating grease in which a step bearing ball is arranged. A bore hole is provided for a rotor shaft at a front housing wall of the lubricant cartridge, while at a rear housing wall an entry bore hole is provided for a thrust bearing. For the purpose of facilitating assembly, the housing is divided into a first housing section comprising the front housing wall and a second housing section comprising the rear housing wall.Type: ApplicationFiled: March 24, 2003Publication date: September 25, 2003Applicant: Maschinenfabrik Rieter AGInventor: Werner Zott
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Patent number: 6619850Abstract: A roller retainer assembly for an axial-thrust bearing comprising first and second annular retainer plates. At least one roller pocket extends through each annular plate. The first second annular retainer plates are interconnected such that the at least one first roller pocket is substantially circumferentially aligned with the at least one second roller pocket with the inner and outer radial edges of the opposed pockets offset from one another. As such, the first pocket defines a first fluid passage gap through the first annular plate between the roller and the first outer edge and the second pocket defines a second fluid passage gap through the second annular plate between the roller and the second inner edge.Type: GrantFiled: February 12, 2002Date of Patent: September 16, 2003Assignee: The Torrington CompanyInventor: Joseph F. Kenney, Jr.
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Patent number: 6568857Abstract: A bearing assembly includes a first race with an axially extending section and a radially extending section, a second race with an axially extending section and a radially extending section, a cage supported between the first and second races, and a plurality of rolling elements circumferentially spaced within openings formed in the cage. A radial lubrication passage with an inlet and an outlet extends through at least a portion of the cage. The radially extending section of the first race and the axially extending section of the second race define a first annular gap. The radially extending section of the second race and the axially extending section of the first race define a second annular gap. Preferably, the inlet is in fluid communication with the first annular gap and the outlet extends axially through the cage and is aligned with the second annular gap.Type: GrantFiled: November 8, 2001Date of Patent: May 27, 2003Assignee: The Torrington CompanyInventors: Eric R. Richard, David R. Moulton