Pad Mounting Structure Patents (Class 384/308)
  • Patent number: 10240630
    Abstract: A leveling plate including a main body and an end protrusion. The end protrusion is provided at both ends in a longer side direction of the main body, and protrudes from the main body in a thickness direction, the end protrusion having an end circumferential surface whose central axis extends in parallel with a shorter side direction of the main body.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: March 26, 2019
    Assignee: DAIDO METAL COMPANY LTD.
    Inventor: Yuji Kawaai
  • Patent number: 10113582
    Abstract: A hydrodynamic bearing assembly includes a first member including a first engaging surface. The first member is stationary in a non-operating mode of the bearing assembly and rotates about an axis in an operational mode of the bearing assembly. The hydrodynamic bearing assembly also includes a second member including a bore and a second engaging surface positioned adjacent the first engaging surface. The second member is stationary in both the non-operating mode and the operational mode of the bearing assembly. The hydrodynamic bearing assembly further includes a spacer member positioned within the bore and is configured to engage the first member to define a first gap between the first engaging surface and the second engaging surface in the non-operational mode.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: October 30, 2018
    Assignees: Regal Beloit Australia PTY., LTD., Regal Beloit America, Inc.
    Inventors: Matthew J. Turner, Greg Heins, Mark Thiele, Jason Jon Kreidler
  • Patent number: 10054154
    Abstract: Tilting pad bearing assemblies and apparatuses are disclosed. The disclosed tilting pad bearing assemblies and apparatuses may be employed in downhole motors of a subterranean drilling system or other mechanical systems. In an embodiment, a bearing assembly or apparatus includes a support ring and a plurality of tilting pads. Each tilting pad is tilted and/or tiltably secured relative to the support ring. In some embodiments, one or more of the tilting pads include a plurality of superhard bearing segments assembled to form a superhard bearing surface. One or more seams may be positioned between adjacent superhard bearing segments of the superhard bearing segments. In other embodiments, one or more of the tilting pads may include at least one or only one superhard bearing segment, such as a polycrystalline diamond bearing segment.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: August 21, 2018
    Assignee: US SYNTHETIC CORPORATION
    Inventors: Craig H. Cooley, Timothy N. Sexton
  • Patent number: 9890809
    Abstract: A tilting pad thrust bearing and a tilting pad thrust bearing assembly are provided. The tilting pad thrust bearing is configured such that when a load is concentrated on only a portion of a thrust bearing because of eccentricity or inclination of a rotating shaft, associated tilting pads are tilted so that the load can be dispersed to the other tilting pads to which comparatively small load is applied, whereby the tilting pads to which the concentrated load is applied can be prevented from being damaged. Furthermore, the tilting pads can be fixed by oil supply nozzles without using a separate fastening member, whereby the size of the tilting pad thrust bearing can be markedly reduced. The tilting pads and a plate have improved structures so that the time and cost required to manufacture the tilting pad thrust bearing or tilting pad thrust bearing assembly can be reduced.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: February 13, 2018
    Assignee: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
    Inventor: Kyung Bo Bang
  • Patent number: 9702400
    Abstract: Embodiments of the invention relate to tilting pad bearing assemblies and apparatuses. The disclosed tilting pad bearing assemblies and apparatuses may be employed in downhole motors of a subterranean drilling system or other mechanical systems. In an embodiment, a bearing assembly or apparatus includes a support ring and a plurality of tilting pads. Each tilting pad is tilted and/or tiltably secured relative to the support ring. In some embodiments, one or more of the tilting pads include a plurality of superhard bearing segments assembled to form a superhard bearing surface. One or more seams may be positioned between adjacent superhard bearing segments of the superhard bearing segments. In other embodiments, one or more of the tilting pads may include at least one or only one superhard bearing segment, such as a polycrystalline diamond bearing segment.
    Type: Grant
    Filed: August 20, 2014
    Date of Patent: July 11, 2017
    Assignee: US SYNTHETIC CORPORATION
    Inventors: Craig H. Cooley, Timothy N. Sexton
  • Patent number: 9689427
    Abstract: A tilting pad, preferably for a radial plain bearing which supports a shaft, with a spaced position in relation to a bearing axis and comprising a supporting surface and a bearing surface opposite the supporting surface, whereby the supporting surface is delimited in an axial direction by two lateral surfaces when viewed transversely, and in a circumferential direction by a run-in edge and a run-out edge when viewed in an installation position, and whereby structures aiding removal of lubricant and coolant are provided on the run-out edge; wherein the structures aiding removal of lubricant and coolant on the run-out edge comprise open-edged recesses arranged on the run-out edge spaced apart from one another in an axial direction.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: June 27, 2017
    Assignee: Voith Patent GmbH
    Inventors: Steffen Kämmerer, Ralph Rudolph
  • Patent number: 9599150
    Abstract: A bearing pad, including a pad body (11) and a tilting element (12), for a support body (2) of a bearing arrangement (3) for taking up an axial thrust, characterized in that the tilting element (12) is provided in an elongated recess (111) of the pad body (11) extending in a radial direction such that a contact body (121) of the tilting element (12) extending in the direction of the recess (111) projecting beyond a surface of the pad body (11) and the pad body (11) has a higher deformability than the tilting element (12).
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: March 21, 2017
    Assignee: Sulzer Management AG
    Inventors: Simon Gassmann, Paul Meuter, Thomas Felix
  • Patent number: 9429188
    Abstract: Bearing components, bearing assemblies and related methods are provided. In one embodiment, a bearing element includes a base layer and a polycrystalline diamond (PCD) layer comprising a plurality of PCD elements coupled with the base layer wherein each PCD element comprising a substrate and a diamond table. The plurality of PCD elements may be fit together to form a substantially continuous bearing surface. For example, the diamond tables may exhibit substantially square or rectangular geometries that are fit together to define the bearing surface. In other embodiments, the bearing elements may be spaced apart from one another. In other embodiments, the bearing element may include a single PCD element formed from a prefabricated PCD compact or cutting tool blank. Various bearing assemblies may incorporate such a bearing element including, for example, thrust bearings, journal bearings, and tilting pad bearing assemblies.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: August 30, 2016
    Assignee: US Synthetic Corporation
    Inventors: S. Barrett Peterson, Craig H. Cooley, Timothy N. Sexton
  • Patent number: 8684606
    Abstract: A hydrodynamic bearing includes a housing defining a central axis, a pad slidable relative to the housing in a direction substantially parallel to the central axis, a cylinder defined in one of the housing and the pad, a lubricant port in fluid communication with the cylinder, and a piston at least partially positioned in the cylinder. The piston is movable within the cylinder between a retracted position and an extended position in response to a flow of lubricant through the lubricant port to vary an axial spacing between the pad and the housing.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: April 1, 2014
    Assignee: Orion Corporation
    Inventors: Thomas R. Byrne, Thomas H. Stietz
  • Patent number: 8678658
    Abstract: A tilting pad bearing comprises a piston carrier ring that may include a plurality of voids spaced around the piston carrier ring, wherein a channel may be formed in a surface of the piston carrier ring opposite the plurality of voids. A carrier end plate may be positioned in the channel and secured to the piston carrier ring, wherein a recess may be formed in a top surface of the carrier end plate. A piston may be positioned in each void, wherein a bottom face of each piston is positioned adjacent the recess. The pistons may be substantially secured in the voids using a plurality of membranes, wherein one membrane corresponds to one piston and one void. Alternatively, the pistons may be formed in two pieces secured via a membrane. Each piston may be engaged with a bearing pad and/or interface member in a bearing pad carrier ring.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: March 25, 2014
    Assignee: Waukesha Bearings Corporation
    Inventors: Nigel H. New, Guy Pethybridge
  • Patent number: 8439567
    Abstract: A preload assembly for a thrust bearing. The preload assembly includes a carrier plate having a central annular protrusion, wherein the annular protrusion has an inner diameter and an outer diameter; an inner disc spring; an outer disc spring; and a housing having an annular channel for housing the carrier plate, the inner disc spring, and the outer disc spring.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: May 14, 2013
    Assignee: Curtiss-Wright Electro-Mechanical Corporation
    Inventors: Richard Witten Armentrout, Ryan Michael Voss, Christopher Daniel Champion, Richard Andrew Gronholm
  • Patent number: 8408802
    Abstract: The bi-directional rotation offset pivot thrust bearing includes a carrier and an array of longitudinal protrusions thereon that run through the center axis of the carrier. An array of pads are in slidable engagement with the longitudinal protrusions to permit the thrusts pads to move between first and second rotational positions. The thrust pads are automatically offset pivoted in a first direction when in a the first rotational position and automatically offset pivoted in a second direction when in the second rotational position. The thrust pads are offset pivoted in an approximate 60 percent to 40 percent ratio with the leading side of the thrust pad being 60 percent in both the first rotational position and the second rotational position. A retainer is also provided to maintain the thrust pads in slidable communication with the protrusions.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: April 2, 2013
    Assignee: Waukesha Bearings Corporation
    Inventor: Fouad Y. Zeidan
  • Patent number: 8328423
    Abstract: Large structure lateral hydrostatic guidance system, particularly suitable for realising the lateral guidance system of the elevation axis of a large telescope made with at least two guide rings, characterized in that all the hydrostatic supports are tilting and floating and have a hydraulic preloading chamber acting between the base and the runner, connected together so as to achieve an isostatic and uniform sharing out of the loads acting on the structure.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: December 11, 2012
    Inventor: Raffaele Tomelleri
  • Publication number: 20120224799
    Abstract: The present invention relates to a bearing device for a wind turbine, wherein the bearing arrangement has two bearing partners, which are pivoted arranged relative to each other over a common axis. A gliding pad acting in an axial direction is provided between the bearing partners. The object of the invention is to provide a bearing arrangement for a wind turbine, which among others avoids the disadvantages of the prior art. In particular, a maintenance-friendly and force flow-optimized arrangement of the gliding pads is to be enabled. The replaceability of the gliding pads is to be improved in a simple and cost-effective manner by disposing the individual gliding pads in pockets between the two bearing partners, wherein the pockets are provided in the material of the machine frame. Additionally, the option exists to use the bearing arrangement at the same time as an active brake.
    Type: Application
    Filed: October 17, 2010
    Publication date: September 6, 2012
    Applicant: Suzlon Energy GmbH
    Inventor: Juergen Wagner
  • Publication number: 20110019950
    Abstract: The bearing device has a bearing housing which is supported by a bearing base mounted on a body of a rotary machine equipped with a rotating shaft and through which the rotating shaft penetrates at the center and a plurality of pads which are arranged inside the bearing housing so as to circumferentially surround the rotating shaft and rotatably support the rotating shaft. A contact surface between an outer circumference of the bearing housing and an inner circumference of the bearing base extends along the axial direction of the rotating shaft and forms a convex curved surface protruding outward, and the bearing housing is slidably supported by the bearing base via the contact surface of the convex curved surface.
    Type: Application
    Filed: February 4, 2009
    Publication date: January 27, 2011
    Inventors: Takamasa Hirai, Sadamu Takahashi, Kyoichi Ikeno, Naoyuki Nagai
  • Patent number: 7845855
    Abstract: There is disclosed a bearing to support a rotating shaft. The bearing includes a cylindrical housing defining a central opening. A plurality of bearing pads integrally coupled to the housing with each bearing pad having a circumferential surface defining a portion of the central opening. A plurality of pins disposed in a bore defined in the housing, with each pin aligned as a pivot for each corresponding pad. Each pad can tilt about the pin in relation to the rotating shaft. Each pad is coupled to the housing by a pair of webs defined by a plurality of cuts forming a plurality of openings in the housing substantially parallel to a line tangent with the circumferential surface of the pad. Each pin is aligned parallel with the rotating pad.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: December 7, 2010
    Assignee: Delaware Capital Formation, Inc.
    Inventors: Kenneth R. Bischof, Randy Gerard Lindner, Timothy J. Renard, Thomas Lamar Richards, II
  • Publication number: 20100142868
    Abstract: Gas journal bearing systems are provided. An exemplary gas journal bearing system comprises a vortex generator, a housing and a journal. The vortex generator is operative to receive a flow of gas and to impart an angular acceleration to the gas. The housing is in fluid communication with the vortex generator, with housing having a first exhaust through which the gas is exhausted. The journal is supported within the housing by a vortex of the gas as the gas swirls along at least a portion of a length of the journal. Methods and other systems also are provided.
    Type: Application
    Filed: September 29, 2004
    Publication date: June 10, 2010
    Inventor: Robert C. Brown
  • Patent number: 7611286
    Abstract: A tilting pad journal bearing, an annular housing for an array of arcuate bearing pads resiliently mounted by spring means which biases the pads against heads of restraining bosses that limit radial displacement and cause the bearing pads to define a shaft space. The pads have associated therewith support pegs secured to housing or pad at one end and movable relative to the pad or housing at the other, and the spring means comprises stacks of individually deflectable elements mounted between relatively moving pad, housing or peg and pre-loaded by adjusting the effective gap with the pads against the bosses. Relative movement between springs provide friction damping. The restraining bosses may be displaceable together to eliminate the shaft space clearance if the magnetic suspension fails or shows signs of failing.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: November 3, 2009
    Assignee: Delaware Capital Formation, Inc.
    Inventors: Michael K. Swann, Nigel Henry New
  • Patent number: 7367713
    Abstract: A tilting pad journal bearing, an annular housing for an array of arcuate bearing pads resiliently mounted by spring means which biases the pads against heads of restraining bosses that limit radial displacement and cause the bearing pads to define a shaft space. The pads have associated therewith support pegs (60) secured to housing or pad at one end and movable relative to the pad or housing at the other, and the spring means comprises stacks of individually deflectable elements mounted between relatively moving pad, housing or peg and pre-loaded by adjusting the effective gap with the pads against the bosses. Relative movement between springs provide friction damping. The restraining bosses may be displaceable together to eliminate the shaft space clearance if the magnetic suspension fails or shows signs of failing.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: May 6, 2008
    Assignee: Delaware Capital Formation, Inc.
    Inventors: Michael K. Swann, Nigel Henry New
  • Patent number: 7311445
    Abstract: A tilting pad bearing assembly consists of an array of bearing pads each supported on a rigid carrier by way of an intervening pivot ridge extending from the pad or carrier. The individual pad surfaces are able to tilt or rock to a limited extent about a pivot or fulcrum ridge. A pad hole depth permits a pin to be inserted via a carrier hole such that with the pad supported on the carrier the pin head is spaced slightly from a shoulder and the pad able to tilt. The assembly permits simplified manufacture by supporting the pads on their bearing surfaces, overlaying the carrier to effect contact at the pivot ridge and forcing the pins into the pads to the limits of the blind holes that gives the correct clearance with respect to the carrier.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: December 25, 2007
    Assignee: Delaware Capital Formation, Inc.
    Inventor: Nigel Henry New
  • Patent number: 7247008
    Abstract: A bearing assembly is provided for a fuel delivery system that includes a pump (10) having a housing that rotatably receives a rotor (20) carrying vanes (26) thereon, a cam ring (70) received between the housing and rotor (20), and a support member of yoke (50) encompassing the cam ring (70) to selectively vary fuel flow. The bearing assembly (80) is a journal bearing between the yoke (50) and the cam ring (70) and includes an annular surface having a central opening therethrough. The annular surface includes a first, high pressure pad (102) and a second, low pressure pad (104) substantially diametrically opposite the first pad and separated by first and second lands (106, 108). The circumferential extent of the first pad (102) is at least as great as an inner diameter of the cam ring (70). Circumferential ends of the second pad (104) are wider than circumferential ends of the first pad.
    Type: Grant
    Filed: July 21, 2003
    Date of Patent: July 24, 2007
    Assignee: Argo-Tech Corporation
    Inventors: Martin A. Clements, Robert Nyzen
  • Patent number: 7237958
    Abstract: A bearing stiff plate pedestal with cylindrical bore and a separate bearing with shimmed saddle blocks that mate to the bore to permit accurate alignment and with self-aligning Babbitted tilting pad bearings to replace existing bearing spring plates arrangements. A method wherein the bearing stiff plate pedestal is fashioned initially as a drill fixture by drilling mounting holes in the stiff plate pedestal with the diameter of a tap drill for hold down bolts, to permit drilling and tapping holes in the pedestal base plate at proper locations. Subsequently, the mounting holes are enlarged to form clearance holes, and the stiff plate pedestal is mounted, aligned, and bolted into place.
    Type: Grant
    Filed: December 27, 2004
    Date of Patent: July 3, 2007
    Inventor: Melbourne F. Giberson
  • Patent number: 7063465
    Abstract: A thrust bearing 11 for use with a shaft 13 having a collar 15 mounted the shaft 13 and rotatable therewith has a base ring 17, a series of shoes 19 positioned on the base ring 17, and a compressible resilient spacing member 29 positioned between the base ring 17 and a housing 31 for the thrust bearing 11. The spacing member 29 supports the thrust bearing 11 when the shaft 13 is rotating during no-load operating conditions, as well as dampens the forces placed on the thrust bearing 11 by the shaft 13 when the shaft 13 is rotating during no-load conditions. The spacing member 29 is sufficiently stiff that it supports the thrust bearing 11 when the shaft 13 is rotating under no-load conditions, but is sufficiently compressible to be compressed to the extent that the gap 33 between the base ring 17 and the housing 31 is eliminated due to the forces placed on the thrust bearing 11 by the shaft 13 bringing the base ring 17 into contact with the housing 31 during normal load operating conditions.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: June 20, 2006
    Assignee: Kingsbury, Inc.
    Inventors: Joseph J. Wilkes, Ascanio M. DeCamillo
  • Patent number: 6739756
    Abstract: A thrust bearing tilting pad has face with a border region including an engagement surface and defining a pocket with generally longitudinal sidebars and a bottom. The pad has leading and trailing portions, with the face extending generally longitudinally therebetween. The leading and trailing portions can be positioned upstream and downstream, respectively, relative to a direction of movement of a runner. The pad is pivotally supported by (e.g., mechanical and/or hydrostatic) pivot and can cooperate with one or more other pads and fluid within a housing to hydrodynamically and mechanically support the runner in an axial position. In another embodiment, the pad tilts free of mechanical engagement with other pads. The leading portion can define an entrance to the pocket and the sidebars can converge along the direction of motion of the runner.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: May 25, 2004
    Assignee: WHM Holding Corporation
    Inventor: William H. Miller
  • Publication number: 20030021503
    Abstract: A multi-pad, fluid film thrust bearing has the pads suspended from the carrier ring on hydrostatic oil pressure regions. The oil is pressurized hydrodynamically by relative rotation between a load surface and the bearing surface of each pad; and the oil is passed through each pad to a rear cavity where the hydrostatic pressure region is established. A manifold interconnects all of the hydrostatic pressure regions for the individual pads in order to average the hydrostatic pressures and provide for static and dynamic load equalization.
    Type: Application
    Filed: July 27, 2001
    Publication date: January 30, 2003
    Inventor: Lyle Arthur Branagan
  • Patent number: 6499883
    Abstract: A thrust bearing tilting pad has face with a border region including an engagement surface and defining a pocket with generally longitudinal sidebars and a bottom. The pad has leading and trailing portions, with the face extending generally longitudinally therebetween. The leading and trailing portions can be positioned upstream and downstream, respectively, relative to a direction of movement of a runner. The pad is pivotally supported by (e.g., mechanical and/or hydrostatic) pivot and can cooperate with one or more other pads and fluid within a housing to hydrodynamically and mechanically support the runner in an axial position. In another embodiment, the pad tilts free of mechanical engagement with other pads. The leading portion can define an entrance to the pocket and the sidebars can converge along the direction of motion of the runner.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: December 31, 2002
    Assignee: WHM Holding Corporation
    Inventor: William H. Miller
  • Patent number: 6443621
    Abstract: A tilting pad thrust bearing arrangement (10, FIG. 1(b)) consists of an annular backing ring (12) providing an axially facing supporting surface (11) on which an array of bearing pads (201, 202 . . . 20i) is carried. Each pad has a flat supported surface (221) clamped to a thin mounting ring (30) of resilient steel by a headed fastener (41i) which bears on the supporting surface. The mounting ring is supported clear of the supporting surface at mounting points (32i) each side of each bearing pad which define a stand-off distance between ring and supporting surface of less than the height of each fastener head so that the ring is biased and each pad is lifted at the clamping position with its edges clear of the ring, thereby permitting it to pivot about the fulcrum formed by the fastener head. The supporting surface may be an intervening resilient ring (FIGS. 5 and 6).
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: September 3, 2002
    Assignee: Delaware Capital Formation Inc.
    Inventor: Nigel Henry New
  • Patent number: 6183138
    Abstract: A tilting pad thrust bearing arrangement (30), comprises a circular array of pads (351, 352, . . . ) having tilt pivots (381, 382, . . . ) and supported spaced from a carrier surface (33) by supporting springs (40) in the form of a stack of at least two annular, axially deflectable spring members (41, 42). Each spring member (41 and 42) is spaced from an adjacent surface, the carrier surface (33) and spring member (41) respectively, by an array of deflection pivots (411, 412, . . . , 421, 422, . . . ) disposed one pivot each between the tilt pivots of adjacent pads and acting as a fulcrum for spring deflection. The spring deflection pivots are in line axially so that upon axial loading of the bearing pads the spring (42) closest to the pads deflects at a first rate to contact the next spring (41) and the spring combination deflects at a second rate, at least until it contacts the carrier surface (33). Any number of springs may be stacked to give appropriate overall progressive deflection characterising.
    Type: Grant
    Filed: October 27, 1999
    Date of Patent: February 6, 2001
    Assignee: Federal-Mogul Engineering Limited
    Inventor: Nigel H New
  • Patent number: 6024494
    Abstract: A product lubricated thrust bearing includes an annular bearing disc made from a hard bearing material such as silicon carbide and having a plurality of radial lubrication grooves in at least one of a front and rear face thereof to define a plurality of bearing segments. A polymeric layer is bonded to the rear face of the annular bearing disc, and provision is made for preventing the bearing disc from slipping relative to the bore of the bearing carrier in which the thrust bearing is mounted. The bearing disc may be cracked along the radial lubrication grooves to allow the bearing segments to axially float. A metal disc may also be bonded to the polymeric layer opposite the bearing disc to reinforce the polymeric layer and to facilitate prevention of slippage of the bearing disc.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: February 15, 2000
    Assignee: Ingersoll-Dresser Pump Company
    Inventor: Frederic W. Buse
  • Patent number: 5971616
    Abstract: A tilting pad thrust bearing assembly comprises an annular body which carries an array of bearing pads either as discrete pads or in an integral ring. The pads are manufactured with opposite faces flat, that is, without the usual radially extending fulcrum ridges, such ridges being provided by a shim member disposed between the pads and a correspondingly flat surface of the carrier body. The fulcrum ridges are defined by folded back tabs displacing the shim material or by pleating the shim material. This construction permits the consumable bearing pads to be made profitable more easily and cheaply.
    Type: Grant
    Filed: June 5, 1998
    Date of Patent: October 26, 1999
    Assignee: The Glacier Metal Company Limited
    Inventor: Nigel H New
  • Patent number: 5927860
    Abstract: A thrust bearing, for axially supporting a rotating member, includes a flat circular disk-shaped bearing body having a central axial bore and a plurality of axial cavities surrounding the central axial bore and a plurality of bearing elements releasably retained, one in each cavity, and axially projecting from the axial surface of the bearing body. The bearing elements are axially reversible and may be provided for rotationally handed or unhanded use.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: July 27, 1999
    Assignee: Ingersoll-Dresser Pump Company
    Inventor: Frederic W. Buse
  • Patent number: 5879085
    Abstract: A tilting pad bearing for a rotatable surface includes a plurality of circumferentially-arranged tilting pads, each of the tilting pads having a working surface and a trailing surface. A lubrication device for lubricating fluid is detachably affixed to the tilt pad leading surface or is formed integral with the tilting pad. The lubrication device has a fluid conduit and a cavity that provide the cool lubricating fluid to those portions of the rotating collar which need the most cooling. The conduit has a ninety degree turn so that the cooling fluid has a velocity vector normal to the boundary layer of the hot carryover fluid. The outlet of the conduit is positioned, and the cavity is designed, to provide the greatest amount of cooling fluid where the rotating surface is the hottest. The lubrication device also has a wiper to wipe hot carryover fluid off of the rotating surface. The amount of lubricating fluid and bearing power losses are substantially reduced.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: March 9, 1999
    Assignee: Orion Corporation
    Inventors: James H. Ball, Thomas R. Byrne
  • Patent number: 5876125
    Abstract: Slide shoe for use in a plain bearing, notably in an axial thrust bearing. The outer periphery (50) of the slide shoe has below its sliding surface (10) a peripheral recess (52) through which the slide shoe rim area (56) that features the appropriate rim area of the sliding surface (10), can flex into the peripheral recess (52) when the sliding surface (10) expands under the effect of temperature more heavily than the deeper part of the slide shoe.
    Type: Grant
    Filed: November 20, 1997
    Date of Patent: March 2, 1999
    Assignee: Renk Aktiengesellschaft
    Inventors: Paul Wyndorps, Bernd Negwer, Albert K. Schmitz
  • Patent number: 5653578
    Abstract: In a vertical-axis waterpower machine, the shaft is mounted in a bearing-supporting star. It has a track ring for a supporting bearing. Supporting-bearing segments are supported via adjusting elements on a supporting ring firmly connected to the bearing-supporting star. To simplify the construction and improve the accessibility of the adjusting elements, the latter are designed as rocking levers. The rocking levers act as single-armed or double-armed levers and are elastic in the lever longitudinal direction.
    Type: Grant
    Filed: September 1, 1995
    Date of Patent: August 5, 1997
    Assignee: ABB Management AG
    Inventor: Josef Schwanda
  • Patent number: 5616098
    Abstract: A reduction mechanism for mill comprises a planetary gear train comprising a sun gear, planet gears, an internal gear and a carrier for supporting the planet gears; an input shaft for feeding power; a sun gear shaft on which the sun gear is mounted; an intermediate shaft interposed between the sun gear shaft and the input shaft; an output table for transferring rotary power; a thrust bearing for supporting the output table; and a case for enveloping the planet gear train and the thrust bearing. A tilting pad type bearing is used for the thrust bearing. The thrust supporting portion of the tilting pad type bearing is formed spherically. The center of the spherical surface is positioned between inside and outside diameters of a vertical portion of the case which receives a thrust force.
    Type: Grant
    Filed: August 14, 1995
    Date of Patent: April 1, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Masanori Katayama, Hiroshi Agata
  • Patent number: 5599109
    Abstract: A bearing assembly includes a bearing base and a plurality of tiltable shoes. A ceramic plate is bonded to each shoe and a face surface of each ceramic plate provides a bearing face. Tilting movement of the shoes relative to the bearing base provides a fluid lubrication film wedge between the bearing faces and the running surface of a moving load. The ceramic plates are separately produced and are bonded to the surface of the shoes, which are formed of relatively soft material, by adhesive, soldering, welding or sintering. The running surface of the load may be formed of a ceramic layer. The ceramic plates are formed of silicon carbide which is fiber reinforced.
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: February 4, 1997
    Assignee: Renk, Aktiengesellschaft
    Inventor: Bernd Negwer
  • Patent number: 5567057
    Abstract: An equalizing tilting pad thrust bearing assembly with inner and outer concentric retaining rings supporting an array of upper and lower equalizing links which support a circular array of tilting bearing pads. Each tilting pad has a flat bottom surface supported by a raised radial cylindrical surface on the upper side of an upper equalizing link. The pads tilt circumferentially to develop a hydrodynamic lubricating wedge by rolling on the radius of the raised cylindrical surface of an upper equalizing link. Each bearing pad and its supporting upper equalizing link tilt together radially by rolling on the radius of two slightly crowned radial cylinders on the bottom surface of the upper link. Each upper link pivots circumferentially about a stub radial pin extending inward from the outer retaining ring which engages an axial slot in the upper link. Each lower equalizing link is supported by and pivots circumferentially about a radial pin whose opposite ends are fixed in the inner and outer retaining rings.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: October 22, 1996
    Inventor: C. William Boller
  • Patent number: 5480233
    Abstract: A thrust bearing for use in downhole drilling systems employing fluid motors having a stator retaining ring and a rotor retaining ring. These rings have a plurality of bearing inserts. The bearing insert surfaces of the rotor contact the bearing surfaces of the stator. The studs which make up the bearing surface have a threaded bolt secured thereto. The threaded bolt extends through a plurality of threaded holes in each of the retaining rings. The studs and bolt may be removed or inserted by use of a simple hand tool, such as an Allen wrench.
    Type: Grant
    Filed: October 14, 1994
    Date of Patent: January 2, 1996
    Inventor: James K. Cunningham
  • Patent number: 5304006
    Abstract: A bearing and a shaft and bearing combination for replacing conventional rolling element bearing, washer and lock ring assemblies. The bearing is constructed so that it can be precisely positioned with respect to the shaft in the housing. Additionally, the bearing provides both radial and thrust support so that the need for separate bearings is eliminated. The assembly is ideally suited for use in small high speed low load cooling fans used in computers, peripherals and other office equipment.The shaft includes a radially inward extending groove, preferably conically tapered. The bearing includes a base member, which can include a beam mounted radial bearing, and a number of longitudinal beams extending axially away from the base member. Each of the longitudinal beams supports a bearing pad in a cantilever fashion.
    Type: Grant
    Filed: March 5, 1992
    Date of Patent: April 19, 1994
    Inventor: Russell D. Ide
  • Patent number: 5246295
    Abstract: A rotary mechanical face seal for preventing leakage of a fluid, either liquid or gas, across two relatively rotating surfaces. The seal is of the non-contacting mechanical type in which a predetermined spacing is maintained between the relatively rotatable sealing washers by formation of a pressurized fluid film between the relatively rotating surfaces. The opposed faces are constructed to provide a separation of the faces at start-up and thereby prevent damage or destruction to the faces before design pressures are achieved. This is achieved by providing at least one of the opposed faces with a deflection bearing portion which causes the necessary deflections under load. The bearing portion comprises a spaced series of lift pad sections. A variety of lift pad constructions can be used. The seal also includes a hydrodynamic radial bearing which centers the shaft in the static state to avoid shaft runout.
    Type: Grant
    Filed: October 30, 1991
    Date of Patent: September 21, 1993
    Inventor: Russell D. Ide
  • Patent number: 5209579
    Abstract: A thrust bearing device for an electric motor lubricated by liquid within a motor casing includes a rotary disk fixed on a primary shaft of the motor and a sliding shoe member having sliding surfaces slidably in contact with a sliding surface of the rotary disk. The sliding shoe member is made of metal and is provided with a plurality of segmented shoes unitarily connected to a common base through respective ribs. The sliding shoe member is fixed to a motor bracket with a gap having a predetermined configuration provided between the retaining surface of the motor bracket and the bottom surface of the common base of the sliding shoe member at each of the portions thereof which respectively correspond to the shoes.
    Type: Grant
    Filed: July 5, 1989
    Date of Patent: May 11, 1993
    Assignee: Ebara Corporation
    Inventor: Kozo Matake
  • Patent number: 5205653
    Abstract: A pivoted pad bearing assembly of the Kingsbury type provides for leveling of bearing pads arranged in a circular array utilizing hydrostatic pressure rather than mechanical links. The leveling device is in the form of a hydraulic bearing support module having a variable volume hydraulic chamber. Pipe segments connect each hydraulic chamber to form a closed circuit and the circuit is completely filled with hydraulic fluid. Thereby, equal force will be exerted upon each pad at all times so that all pads will operate at an equal thrust load. The bearing assembly has particularly useful application in an integral motor submersible propulsor as a large diameter thrust bearing housed within an outer shroud of the propulsor at both upstream and downstream ends of a rotor mounted about the periphery of a propeller of the propulsor. By placing the thrust bearing within the shroud, greater thrust bearing surface areas can be obtained to handle larger thrust.
    Type: Grant
    Filed: May 1, 1991
    Date of Patent: April 27, 1993
    Assignee: Westinghouse Electric Corp.
    Inventors: Luciano Veronesi, James A. Drake
  • Patent number: 5158525
    Abstract: Box machine forming wheels are individually stabilized with a respective, frame mounted, stationary yoke meshed within the circumferential groove of a head wheel that is rigidly secured to the forming wheel. Lateral space between the stationary yoke finger faces and the rotating groove walls is adjustably filled by cam displaced disc pads confined within yoke finger guide bores. Selective cam rotation expands the disc pad assembly for operational wear accommodation.
    Type: Grant
    Filed: January 22, 1992
    Date of Patent: October 27, 1992
    Assignee: Westvaco Corporation
    Inventor: Willem A. Nikkel
  • Patent number: 5123891
    Abstract: Box machine forming wheels are individually stabilized with a respective, frame mounted, stationary yoke disposed within the circumferential groove of a head wheel that is rigidly secured to the forming wheel. Lateral space between the yoke finger faces and the rotating groove walls is adjustably filled by rub plates mounted on dowel pins confined within yoke finger guide bores. A cone tipped adjustment screw cooperates with conical tips on the dowel pins to selectively expand the rub plate assembly for operational wear accommodation.
    Type: Grant
    Filed: July 18, 1991
    Date of Patent: June 23, 1992
    Assignee: Westvaco Corporation
    Inventors: Zigmunt Nieradka, Robert W. Young
  • Patent number: 5046864
    Abstract: An equalizing tilting pad assembly for thrust bearings and the like which includes a retaining ring housing an arrangement of upper and lower equalizing links and supporting a number of similar tilting pads each having a spherically curved contact surface on its lower face. The upper and lower equalizing links lie within the retaining ring in an endless overlapping arrangement with each upper link touching at contact points two adjacent lower links. Each upper link is pivotally mounted on a spherical ball supported by the retaining ring and each lower link is pivotally mounted on the retaining ring by cylindrical members lying perpendicular to the axis of the retaining ring, and the contact points between adjacent upper and lower links lie in a common plane when the equalizing links are in a position of zero pivoting angle.
    Type: Grant
    Filed: February 8, 1991
    Date of Patent: September 10, 1991
    Inventor: C. William Boller
  • Patent number: 5007745
    Abstract: The bearing pads of a hydrodynamic tilting pad thrust bearing are cut from a ring and arranged in a circle within a retainer for bearing the load of a collar fastened to a rotating shaft. The leading and trailing edges of respective adjacent pads contain open edge grooves which together form a pocket for receiving and dispensing lubricating and cooling oil under controlled conditions. Semicircular grooves in the edges of the adjacent pads together form generally circular ducts through which the oil is conducted to the pockets.
    Type: Grant
    Filed: September 26, 1989
    Date of Patent: April 16, 1991
    Assignee: Delaware Capital Formation, Inc.
    Inventors: James H. Ball, Willis W. Gardner
  • Patent number: 4963039
    Abstract: A thrust bearing for vibration reduction application which isolates the tst shoes so that transmissions of vibrations induced by drag on the thrust shoes are attenuated or avoided. A thrust shoe carrier isolates the thrust shoes from the relatively stationary platform in which the bearing operates by providing a damped spring system with relatively low stiffness in the axial direction and relatively high stiffness in the torsional and radial directions.
    Type: Grant
    Filed: September 13, 1989
    Date of Patent: October 16, 1990
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Thomas L. Daugherty
  • Patent number: 4886378
    Abstract: A thrust bearing device is constructed to comprise a sliding disk; anda sliding shoe member;both having a sliding surface respectively adapted to slidably contact with each other and one of which is arranged to be the rotary side of the bearing device and the other arranged to be the stationary side, the sliding shoe member being a unitary member formed in a special configuration in that it is provided with plural sliding shoes supported on a common base through ribs, each shoe having a flat surface coplanar with the flat surfaces of the other shoes to constitute a common sliding surface of the shoe member. The stationary side of the device is fixed on a motor bracket with an elastic sheet interposed therebetween.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: December 12, 1989
    Assignee: Ebara Corporation
    Inventor: Kozo Matake
  • Patent number: 4753553
    Abstract: A bearing structure which may, for example, be used for rotatable mounting of a turret or a rig (11) on the hull (14) of a vessel comprises a first annular bearing surface which is supported by the vessel hull (14), and which may be substantially plane or cylindrical. A second annular bearing surface which is in engagement with and supported by the first bearing surface is formed on the turret or rig (11). The hull (14) of the vessel is exposed to heavy forces caused by wind and waves, and such forces may cause deformations of the hull and consequently of said first bearing surface. In order to compensate for such deformations, the first bearing surface is divided into sections, and position control means, such as mechanical, pneumatic, or hydraulic spring means, are provided for maintaining all of the bearing surface sections in abutting engagement with said second bearing surface formed on the turret or rig (11).
    Type: Grant
    Filed: June 24, 1986
    Date of Patent: June 28, 1988
    Assignee: Ingenirforretningen Atlas A/S
    Inventors: Viggo O. Carlsen, Bernt M. Stoylen
  • Patent number: 4738550
    Abstract: A tilting pad thrust bearing in which the sector-shaped pads are supported on individual disks. A runner runs on top of the pads. The disks have a spherical element projecting from their bottoms. The elements make tangential contact with a stationary support ring and the pads and disks tilt about an axis on which the point of tangency lies. The tilt axis of each pad is located at 70% to 80% of the length of an arc extending from the leading edge to the trailing edge of the pad midway between the radially outermost and innermost edge of the pad.
    Type: Grant
    Filed: July 7, 1987
    Date of Patent: April 19, 1988
    Assignee: Waukesha Bearings Corporation
    Inventor: Willis W. Gardner