For Thrust Bearing Patents (Class 384/303)
  • Patent number: 10400821
    Abstract: When an annular portion of a thrust collar rotates together with a rotating shaft member, centrifugal force and shear force, or differential pressure caused by difference in flow rate are generated in lubricating oil in a circulation oil chamber. With this, the lubricating oil in the circulation oil chamber is guided from the inner peripheral side to the outer peripheral side of the annular portion, through a circulation hole penetrating the annular portion. The flow of lubricating oil guided by the circulation hole forms a flow of lubricating oil from a lower oil chamber to an upper oil chamber through the circulation oil chamber. As a result, the lubricating oil stored in the lower oil chamber is circulated to the upper oil chamber through the circulation oil chamber, by rotation of the thrust collar.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: September 3, 2019
    Assignee: DAIDO METAL COMPANY LTD.
    Inventors: Kwangik Na, Shigeyoshi Mori, Tadatoshi Nagasaki
  • Patent number: 10094388
    Abstract: An arrangement for compensating the axial thrust of a fluid-flow machine is provided. A load-relieving element is non-rotatably connected to a shaft. A flow-restrict gap is formed by the load-relieving element and a counter-element secured to a housing of the fluid-flow machine. The counter-element is provided with a device for maintaining the distance between the load-relieving element and the counter-element. The device includes at least one force-generating element that generates a force that acts in opposition to the axial thrust in order to avoid component contact.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: October 9, 2018
    Assignee: KSB Aktiengesellschaft
    Inventors: Thomas Keller, Gerhard Meyer
  • Patent number: 9593716
    Abstract: A vertical shaft with a slide bearing for a turbine or generator. The invention relates to a vertical shaft (1) with a hydrodynamic slide bearing (2) comprising the following features or components: •—an annular fixed bearing housing (3) which surrounds the shaft (1); •—a plurality of bearing segments (4) which are fixed components of the bearing housing (3), surround and support the shaft (1) and form a bearing gap (5) therewith; •—the shaft (1) has a radially inner oil trough (1.2) and radially outer oil trough (1.3) communicating therewith; •—an oil lubrication system in which the oil flows through the following components: •—the bearing housing (3); •—a first connection line from the bearing housing (3) to the inner oil trough (1.2); •—an overflow channel (1.4) from the upper end of the radially inner oil trough (1.2) to the upper end of the radially outer oil trough (1.3); •—bores (7) from the radially outer oil trough (1.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: March 14, 2017
    Assignee: VOITH PATENT GMBH
    Inventor: Rainer Haussmann
  • Patent number: 9562561
    Abstract: Bearing apparatuses including contacting bearing surfaces comprising superhard materials are disclosed. In one embodiment, the present invention relates to bearings including polycrystalline diamond inserts or compacts defining a plurality of surfaces that move relative to one another and contact one another. For example, apparatuses may include radial bearings, or other bearings including arcuate bearing surfaces that more in relation to one another, without limitation. In one embodiment, a superhard bearing element may comprise a superhard table (e.g., polycrystalline diamond) forming an arcuate bearing surface. Further, such a superhard bearing element may comprise a chamfer formed about at least a portion of a periphery of the arcuate bearing surface. Bearing apparatuses including such bearing elements and various mechanical systems are disclosed.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: February 7, 2017
    Assignee: US Synthetic Corporation
    Inventors: Craig H. Cooley, Timothy N. Sexton
  • Patent number: 9221530
    Abstract: Marine propulsion system and ship outfitted therewith, wherein the marine propulsion system has a propulsion element for propelling a ship, a driving engine which is to be flexibly mounted at a hull of the ship for driving the propulsion element, a thrust bearing which is to be rigidly mounted at the hull and which has a thrust bearing shaft having a first end and a second end, a driving engine drivetrain for connecting the driving engine to the first end of the thrust bearing shaft, and a propulsion element drivetrain for connecting the second end of the thrust bearing shaft to the propulsion element, wherein the driving engine drivetrain rigidly connects the driving engine to the first end of the thrust bearing shaft.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: December 29, 2015
    Assignee: RENK Aktiengesellschaft
    Inventor: Heinz-Jürgen Bohmann
  • Patent number: 9127713
    Abstract: Embodiments of the invention relate a bearing assembly, which may be operated at least partially hydrodynamically, and includes a support ring having reduced-thickness portions configured to elastically flex for promoting hydrodynamic fluid flow between opposing bearings of the bearing apparatus incorporated in a bearing apparatus. The disclosed bearing assemblies and apparatuses may be employed in downhole motors of a subterranean drilling system or other mechanical systems.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: September 8, 2015
    Assignee: US SYNTHETIC CORPORATION
    Inventor: Xiaobin Lu
  • Patent number: 9080385
    Abstract: Embodiments of the invention are directed to bearing assemblies configured to effectively provide heat dissipation for bearing elements, bearing apparatuses including such bearing assemblies, and methods of operating such bearing assemblies and apparatuses. In an embodiment, a bearing assembly includes a plurality of superhard bearing elements distributed about an axis. Each superhard bearing element of the plurality of superhard bearing elements has a superhard table including a superhard surface. The bearing assembly includes a support ring structure coupled to the plurality of superhard bearing elements. One or more of the superhard bearing elements includes a superhard table, which may improve heat transfer from such superhard bearing elements.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: July 14, 2015
    Assignee: US SYNTHETIC CORPORATION
    Inventors: Jair Jahaziel Gonzalez, Timothy N. Sexton
  • Patent number: 8998494
    Abstract: A dry gas thrust bearing is provided for use in rotating equipment and more particularly, this thrust bearing is designed to support compressor/turbine thrust loads in an improved arrangement which does not require oil lubrication and which is designed to support necessary shaft thrust loading by the utilization of a dry gas film. The bearing includes a shaft rotor between two axially movable stators and relies on a dry gas film to separate the rotor and stators. The stators are axially loaded by a double spring package arranged in series wherein a lightly loaded spring engages the stator during zero thrust applications, and as the shaft begins to rotate and encounter axial thrust, a heavier stiffer spring, greater than the thrust load, quickly engages.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 7, 2015
    Assignee: Flowserve Management Company
    Inventors: Detlev Steinmann, Jack Thom, Timothy D Carpenter, Chris Buiter, Bryan Bradshaw, Michael Spaid
  • Patent number: 8961019
    Abstract: A bearing assembly comprising a frame; a rotating disc disposed in the frame, the rotating disc comprising a first set of inserts; and a fixed disc disposed in the frame, the fixed disc comprising a second set of inserts, the second set of inserts configured to interact with the first set of inserts, and a lip disposed adjacent the second set of inserts. Also, a bearing assembly comprising a frame; a rotating disc disposed in the frame, the rotating disc comprising a first set of inserts and at least one groove disposed axially above at least one of the inserts; and a fixed disc disposed in the frame, the fixed disc comprising a second set of inserts, the second set of inserts configured to interact with the first set of inserts.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: February 24, 2015
    Assignee: Smith International, Inc.
    Inventors: Parag Konde, Srinivas Likki, James Layne Larsen, Dwayne P. Terracina, Andrew Grebe
  • Patent number: 8882355
    Abstract: A bearing assembly and wind generator. The bearing assembly includes a plurality of bearing segments defining a sliding member and a bearing body, with the sliding member and bearing body being joined together, and the plurality of bearing segments being coupled together to define an annular bearing structure. Also, a wind generator includes a wind rotor supported upon a tower, a hydraulic pump coupled to the wind rotor, and with rotation of the hydraulic pump pressurizing a hydraulic fluid, and a hydraulic motor in fluid communication with the hydraulic pump, and an electrical generator driven by the hydraulic motor to produce electrical energy.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: November 11, 2014
    Inventor: Jochen Corts
  • Patent number: 8876392
    Abstract: A pad-type thrust bearing in which each pad rests on a volume of liquid enclosed in a cavity connected to adjacent cavities by ducts. The thrust bearing includes a number of casings, each casing delimiting the cavity and which are connected to one another by ducts. The convex casings and the ducts together form a hollow functional subassembly which is separate from the other constituent components of the thrust bearing and which delimits a liquid-filled closed volume. Each casing includes two half-shells positioned one on each side of a flexible bladder and each duct including a flexible hose inserted in a sheath.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: November 4, 2014
    Assignee: Alstom Renewable Technologies
    Inventor: Luc Melet
  • Patent number: 8834028
    Abstract: A rotating assembly adapted for use in turbines and pumps is provided. The rotating assembly includes a shroud that rotates around a central axis and a disk seated in a recess in the shroud so that the disk rotates with the shroud, the disk being oriented perpendicular to the central axis. The rotating assembly also includes a stationary element in which at least one surface of the disk contacts a fluid so that when the fluid flows under pressure, the surface of the disk resists the generation of drag between the surface and the stationary element of the rotating assembly. A shroud is provided that includes a circular recess with a cavity on an outer perimeter extending away from the fixed assembly. A method of manufacturing a rotating assembly is provided.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: September 16, 2014
    Assignee: Energy Recovery, Inc.
    Inventors: Felix Winkler, Jeffrey Michael Calkins
  • Patent number: 8807920
    Abstract: A pump assembly with a rotatable rotor shaft (10), wherein the rotor shaft (10) includes at least one axial bearing (36, 40) and a radial bearing (30, 32), which are integrated into a common bearing assembly (16).
    Type: Grant
    Filed: October 18, 2008
    Date of Patent: August 19, 2014
    Assignee: Grundfos Management a/s
    Inventors: Helge Grann, Alfred Lisbjerg Pedersen
  • Patent number: 8807837
    Abstract: Embodiments of the invention are directed to bearing assemblies configured to effectively provide heat distribution from and/or heat dissipation for bearing element, bearing apparatuses including such bearing assemblies, and methods of operating such bearing assemblies and apparatuses. In an embodiment, a bearing assembly includes a plurality of superhard bearing elements distributed about an axis. Each superhard bearing element of the plurality of superhard bearing elements has a superhard material including a superhard surface. Additionally, a support ring structure that includes a support ring that supports the plurality of superhard bearing elements and a thermally-conductive structure in thermal communication with the superhard table of each of the plurality of superhard bearing elements. The thermally-conductive structure has a higher thermal conductivity than the support ring of the support ring structure.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: August 19, 2014
    Assignee: US Synthetic Corporation
    Inventors: Jair Jahaziel Gonzalez, S. Barrett Peterson
  • Patent number: 8714826
    Abstract: A bearing assembly and wind generator. The bearing assembly includes a plurality of bearing segments defining a sliding member and a bearing body, with the sliding member and bearing body being joined together, and the plurality of bearing segments being coupled together to define an annular bearing structure. Also, a wind generator includes a wind rotor supported upon a tower, a hydraulic pump coupled to the wind rotor, and with rotation of the hydraulic pump pressurizing a hydraulic fluid, and a hydraulic motor in fluid communication with the hydraulic pump, and an electrical generator driven by the hydraulic motor to produce electrical energy.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: May 6, 2014
    Inventor: Jochen Corts
  • Publication number: 20140086516
    Abstract: A sliding bearing and a service method of performing a service of a sliding bearing are provided. The sliding bearing includes a first bearing shell and a second bearing shell and a plurality of bearing pads arranged between the first bearing shell and the second bearing shell. In addition, the bearing includes an opening in the first bearing shell, wherein the opening is arranged such that the bearing pads are visible through the opening.
    Type: Application
    Filed: July 25, 2013
    Publication date: March 27, 2014
    Inventors: Bo Pedersen, Kim Thomsen
  • 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: 8016052
    Abstract: A thrust bearing assembly comprising a rotating bearing runner and a stationary bearing carrier, the carrier defining a plurality of thrust pad sites annularly around the carrier, with a thrust pad disposed at a site and with the carrier constraining movement of the thrust pad in a direction generally radial to the longitudinal axis of the runner while allowing the thrust pad to move in a direction generally parallel to the longitudinal axis. An embodiment comprises a rotating bearing runner having a wear resistant face and a stationary bearing carrier defining cavities disposed annularly around the carrier. A deflection element (e.g., Belleville washer) is disposed in a cavity and a pad is disposed over the deflection element. The pad is at least partially disposed within the cavity. The wear resistant face contacts the pad. Another embodiment rigidly connects pads disposed on opposite sides of a stationary bearing carrier.
    Type: Grant
    Filed: April 2, 2010
    Date of Patent: September 13, 2011
    Assignee: Ceradyne, Inc.
    Inventor: Russell Douglas Ide
  • Patent number: 7887240
    Abstract: A thrust washer for a torque converter, including a front surface and at least one first channel. The at least one channel is at least partially enclosed by the front surface and is in fluid communication with an inner circumference and an outer circumference for the thrust washer. The front surface is arranged to engage a cover for the torque converter. In some aspects, the at least one channel is fully enclosed by the front surface. The thrust washer also includes a back surface, oppositely disposed from the front surface. The at least one channel is at least partially enclosed by the back surface. In some aspects, the thrust washer includes a front piece and a back piece matingly engaged and configured to form the at least one channel. The front and back pieces are fixedly secured or removably secured.
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: February 15, 2011
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Bhaskar Marathe, Steven Olsen
  • Patent number: 7255480
    Abstract: A diamond bearing assembly comprises a support ring having at least one diamond bearing segment attached thereto. A plurality of bearing pads are disposed on the diamond bearing segment. The plurality of bearing pads have a plurality of flow micro-channels between the bearing pads. A flow channel is disposed in the support ring proximate the bearing segment, wherein the flow channel has a fluid flowing therethrough for cooling the bearing segment. In another aspect, a method of cooling a diamond bearing comprises disposing a plurality of bearing pads on a diamond bearing segment. The diamond bearing segment are attached to a support ring. A fluid flows through a substantially radial channel in the support ring to cool the diamond bearing segment.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: August 14, 2007
    Assignee: Baker Hughes Incorporated
    Inventors: Hendrik John, Andreas Krafczyk
  • Patent number: 7104772
    Abstract: In a screw compressor for a refrigerator, suction-side rotor shafts of screw rotors are supported rotatably by angular ball bearings for forward thrust load, an annular gap is formed between the angular ball bearings and a suction-side bearing casing, and outermost end faces of outer rings of the angular ball bearings are pressed through a spring member by means of a presser member fixed to an end face of the suction-side bearing casing, whereby the angular ball bearings are held movably in the thrust direction within the suction-side bearing casing. Discharge-side rotor shafts of the screw rotors are supported rotatably by angular ball bearings for forward thrust load and an angular ball bearing for reverse thrust load which are held at predetermined certain positions within a discharge-side bearing casing. A screw compressor which permits structural simplification, reduction of size, and lightening of a maintenance burden is provided.
    Type: Grant
    Filed: October 20, 2003
    Date of Patent: September 12, 2006
    Assignee: Kobe Steel, Ltd.
    Inventor: Noboru Tsuboi
  • Patent number: 6669372
    Abstract: A double sided 360° thrust bearing having oppositely oriented interlocking elements each with an open segment and an elevated segment is assembled over a thrust collar on the shaft interconnecting the turbine wheel and compressor wheel of a turbocharger. Bearing pads on the front surface and rear surface of the mated interlocking elements and on the oppositely oriented elevated segments engage reaction surfaces in a channel on the thrust collar. Lubrication channels in the mating faces of the interlocking elements provide oil to the bearing pads on the front and rear surfaces of the bearing while interconnecting lubrication conduits provide oil to the bearing pads on the elevated segments.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: December 30, 2003
    Assignee: Honeywell International Inc.
    Inventor: Steven P. Martin
  • 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: 6186758
    Abstract: A compressor in accordance with the present invention includes a male rotor which is axially aligned with and in communication with two female rotors. The compressor includes a housing and a thrust balance configuration. The thrust balance configuration includes a thrust balance disc mounted to a male rotor shaft in a discharge housing of the compressor. The thrust balance disc is exposed to fluid from the compressor at high pressure. The outside diameter of the thrust balance is sized to provide sufficient area to react thrust loads produced by the first rotor. The thrust balance configuration serves to balance the thrust loads imparted on the male rotor and allows for full axial discharge porting.
    Type: Grant
    Filed: February 13, 1998
    Date of Patent: February 13, 2001
    Inventor: David N. Shaw
  • 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: 5253939
    Abstract: Cylindrical bearing pads are insertable into bearing pad recesses formed in a receiving surface of a bearing pad retainer in a load-carrying structure. The bearing pads have an insertion end which is fixed into the bearing pad recess by brazing or by interference fitting and a bearing end which projects from the receiving surface and terminates in a bearing face. The bearing face has a periphery which encircles the bearing face and an indentation having a perimeter formed centrally in the bearing face. An annular flattened area encircles the indentation forming an effective bearing contact area between an outer border of the flattened area and the perimeter of the indentation. When the indentation is filled with drilling fluid, lubrication is provided to an opposed bearing face of an opposing bearing pad.
    Type: Grant
    Filed: November 22, 1991
    Date of Patent: October 19, 1993
    Assignee: Anadrill, Inc.
    Inventor: David R. Hall
  • Patent number: 5092687
    Abstract: A diamond thrust bearing and method for manufacturing the diamond thrust bearing wherein diamond bearing pads are interference fitted at ambient temperatures into a plurality of equidistantly spaced bearing pad recesses located in a circle in a receiving surface of a bearing pad retainer. The bearing faces of the diamond bearing pads are located coplanar with a predetermined common bearing plane by pressing the bearing faces into the bearing pad retainer with a ram and inflexible pressing plate until the pressing face of the pressing plate is stopped by a press stop block. The diamond thrust bearing manufactured using the method will be free from heat induced stresses that cause bearing face misalignment.
    Type: Grant
    Filed: June 4, 1991
    Date of Patent: March 3, 1992
    Assignee: Anadrill, Inc.
    Inventor: David R. Hall
  • Patent number: 5035519
    Abstract: A thrust bearing including a ring-like form plate body, and a plurality of rib members provided on the ring-like form plate body of the thrust bearing. Such a plurality of rib members may be provided on a thrust runner. The rib members cause a difference in load deformation amount in a circumferential direction according to thrust load and generate a wedge-shaped form clearance between a sliding face of the thrust bearing and a sliding face of the thrust runner. Since the wedge-shaped form clearance is formed by utilizing the load deformation, even when the thrust load becomes large, the wedge-shaped form clearance does not become narrow. The occurrence of dynamic pressure by the wedge effect and the formation of a water film can be assured, and the temperature increase between the sliding face of the thrust runner and the sliding face of the thrust bearing can be restrained.
    Type: Grant
    Filed: March 5, 1990
    Date of Patent: July 30, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Kooji Aizawa, Katsutoshi Nii, Kazuhiko Kawaike, Kengo Hasegawa, Akira Saruta, Ryoichi Nakashima
  • Patent number: 4905531
    Abstract: An adjusting drive comprises an electric motor having a motor armature provided with a motor armature shaft, a worm transmission associated with the drive motor and having a worm shaft which is formed as a floatingly arranged extension of the motor armature shaft, the worm shaft having a free end provided with a convex end surface, a stationary running element on which the motor armature shaft is fixed in an axial direction when it is rotated in a rotary direction, so that a pitch angle of the worm shaft in connection with a flank angle of teeth of the worm shaft produce a load component extending transversely to a longitudinal axis of the worm shaft, the running element which cooperates with the convex end surface of the worm shaft having a running surface which is formed spatially relative to the longitudinal axis of the worm wheel so that it is inclined in direction of the loading component of the worm shaft.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: March 6, 1990
    Assignee: Robert Bosch GmbH
    Inventors: Hans Bertsch, Jacob Stolle, Michael Winzer
  • Patent number: 4832636
    Abstract: A marine drive unit (1) includes a lower torpedo housing (9). At least one propeller shaft (21) is mounted in the housing for rotation about a drive axis (17). The propeller shaft is driven by a driving gear (16) suitably connected to a marine engine (4) and mounted on the drive axis. A first forward thrust bearing (41) is disposed between the driving gear and the housing. In addition, a second forward thrust bearing (42) is disposed adjacent the forward end of the propeller shaft. A pre-loading device, in the present embodiment a washer-like Belleville spring (43) of a desired capacity, is disposed to provide an adjustable rearwardly biasing force on the second thrust bearing.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: May 23, 1989
    Assignee: Brunswick Corporation
    Inventor: Daniel F. McCormick
  • Patent number: 4820211
    Abstract: An outboard motor having an improved arrangement for supporting and preloading a thrust bearing of a driveshaft. The preloading device comprises a plurality of relatively small diameter stiff coil springs that encircle the driveshaft and place a compressive force on the thrust bearing.
    Type: Grant
    Filed: June 25, 1987
    Date of Patent: April 11, 1989
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Akihiro Onoue
  • Patent number: 4708496
    Abstract: A structure and method for attaching bearing inserts including a bearing ring having through holes therein into which said inserts are press fitted and an underlying brazing ring, which, when heated, attaches the bearing inserts to the bearing ring and the bearing ring and inserts to an adjoining structural member.
    Type: Grant
    Filed: May 20, 1986
    Date of Patent: November 24, 1987
    Assignee: Smith International, Inc.
    Inventor: James N. McPherson
  • Patent number: 4657411
    Abstract: A thrust bearing particularly suitable for use with a vertical shaft machine has a rotating ring mounted to the shaft for rotation with the shaft and having a downwardly directed bearing surface. A base ring is positioned around the shaft and fixedly mounted to a machine foundation. A plurality of segmented bearing shoes extend around the shaft and have upwardly directed bearing surfaces for bearing engagement with the bearing surface of the rotating ring. Each shoe is supported from the base ring by a plurality of hydraulic elements which in one form are cylinders fixed to the base ring with pistons extending axially therefrom to engage the respective bearing shoe. Each cylinder is connected to a manifold to provide to each cylinder a hydraulic fluid under pressure. Because the source is common, each cylinder has hydraulic fluid at the same pressure.
    Type: Grant
    Filed: August 25, 1986
    Date of Patent: April 14, 1987
    Assignee: Canadian General Electric Company Limited
    Inventor: Duncan T. Bath
  • Patent number: 4639146
    Abstract: A thrust bearing has a plurality of bearing pads each provided on its back side with a pivot, and a support on which the pads are disposed in the circumferential direction. An integral carrier is mounted on the support. The carrier has leg portions and a resilient portion and definies a squeeze film damper portion between the rear surface thereof and the opposing surface of the support. The pads are carried tiltably by the carrier through the pivots.
    Type: Grant
    Filed: April 13, 1984
    Date of Patent: January 27, 1987
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Yoshioka, Hideki Izumi, Hiroshi Inouye, Eiichi Hazaki, Shiro Nakadaira
  • Patent number: 4620601
    Abstract: A turbodrill is disclosed which is connected to a string of drill pipe as a rotating shaft for driving a drill bit which may be a rotary bit or a high speed solid head diamond bit. The turbine section of the turbodrill has rotor and stator blades which are cresent shaped in cross section and are operated by drilling mud flowing therethrough to rotate the shaft. The shaft is provided with radial bearings which carry radial loads and thrust bearings which carry vertical or longitudinal loads. The thrust bearings, which carry the entire thrust load, consist of a pair of annular bearing plates each of which supports a plurality of friction bearing members, highly resistant to wear by the drilling mud flowing through the drill, consisting of cylindrical studs having flat faces with flat disc-shaped diamond bearing members supported thereon. There are preferably one more of the diamond bearing members on one of the annular bearing plates than on the other.
    Type: Grant
    Filed: September 28, 1981
    Date of Patent: November 4, 1986
    Assignee: Maurer Engineering Inc.
    Inventor: Dave D. Nagel
  • Patent number: 4494882
    Abstract: A self-pumping thrust bearing for electric machines having a vertical shaft is disclosed in which the oil is circulated via radially-extending bores which suck hot oil from an oil space adjacent to the vertical shaft and conduct it to at least one cooler through a stationary ring canal. In order to prevent air bubbles or foamed oil from being circulated with the oil, the oil suction space is enlarged by a recess extending to the radial bores on the inside of the thrust ring and additional radial bores are provided which open toward the oil suction space below the top end of a cylinder wall rotating with the thrust bearing which begins at the thrust ring. The oil contained in the oil suction space rotates together with the thrust ring, and a segregation of air bubbles or oil foam from the oil is obtained during the dwell time of the oil in the oil suction space.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: January 22, 1985
    Assignee: Siemens Aktiengesellschaft
    Inventor: Hans-Jurgen Pollok
  • Patent number: 4468138
    Abstract: In the manufacture of diamond bearings consisting of a supporting plate/ring having a plurality of recesses equally spaced therearound with insert members consisting of hardmetal or carbide studs, with planar faces of polycrystalline diamond, positioned therein, the diamond bearing faces are made co-planar by placing metal pads, preferably of brazing metal, in the bottom of each recess before insertion of the bearing studs, placing the assembly with the bearing faces on a smooth planar support, heating the assembly to a temperature at which the metal pads soften or melt and allowing the metal pads to extrude around and braze the bearing inserts in place. When the assembly has cooled, the bearing inserts have their diamond bearing faces locked in co-planar relation by the extruded metal from the metal pads.
    Type: Grant
    Filed: September 28, 1981
    Date of Patent: August 28, 1984
    Assignee: Maurer Engineering Inc.
    Inventor: Dave D. Nagel