Interfitting Or Overlapping Patents (Class 277/419)
  • Patent number: 10801415
    Abstract: A seal for sealing a combustor heat shield against an interior surface of a combustor shell, the seal comprising: a first sealing surface on the interior surface of the combustor shell; and a second sealing surface on a rail on an edge of a heat shield, wherein each of the first and second sealing surfaces include first and second projections defining a non-linear leakage path between the projections.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: October 13, 2020
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Nigel Davenport, Yen-Wen Wang
  • Patent number: 10711628
    Abstract: A rotor member is described for a gas turbine that is adapted for rotating about a central axis, the rotor member being a blisk having a rotor blade row that extends around the central axis or a rotor disk having a mounting portion for installing rotor blades of a rotor blade row that extends around the central axis, and being axially offset from the rotor blade row and/or the mounting portion and, extending coaxially, having at least one annular and axially asymmetrical sealing fin that has a radially outer tip portion having a front flank facing the rotor blade row and/or the mounting portion, and an opposite flank facing away from the rotor blade row and/or the mounting portion; the front flank being less steep than the opposite flank; a turbine and a compressor having such a rotor member, and a method for manufacturing such a rotor member having at least one sealing fin coating.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: July 14, 2020
    Assignee: MTU Aero Engines AG
    Inventors: Lothar Albers, Thomas Binsteiner, Johann Geppert, Stefan Herbst, Manuel Hertter, Alexander Scharf, Robert Winsy, Stephen Royston Williams
  • Patent number: 10626739
    Abstract: A rotary machine satisfies at least one of Dr1<Dh1?Dr2 or Dc1?Dt1>Dc2. Dr1, Dh1, Dr2, Dc1, Dt1, and Dc2 are distances from a rotational center axis of a hub to an upstream end of a first blade-facing surface facing a hub-side end surface of a variable blade, an upstream end of the hub-side end surface when the blade angle is maximum, a downstream end of a first outer peripheral surface adjacent to an upstream side of the blade-facing surface, an upstream end of a second blade-facing surface facing a tip-side end surface of the variable blade, an upstream end of the tip-side end surface when the blade angle is minimum, and a downstream end of a first inner peripheral surface adjacent to an upstream side of the second blade-facing surface, respectively.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: April 21, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Kenichiro Iwakiri
  • Patent number: 10584795
    Abstract: An axial assembled interlocking labyrinth seal with a rotor and a stator each having a series of separate spiral shaped teeth with a gap formed on each of the separate teeth, so that the rotor can be rotated within the stator and axially advanced by aligning the gaps of the teeth on the rotor with gaps on the stator so that the axial labyrinth seal can be assembled.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: March 10, 2020
    Assignee: Florida Turbine Technologies, Inc.
    Inventor: Ross H Peterson
  • Patent number: 10557377
    Abstract: A turbocharger includes: a bearing housing (housing); a bearing disposed in the housing and having a thrust bearing surface; and a partition wall portion assembled to the housing, the partition wall portion including an inclined surface positioned on an outer side in a radial direction of the thrust bearing surface, extending at least vertically above the thrust bearing surface, and inclined with respect to a direction perpendicular to the axial direction of a shaft.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: February 11, 2020
    Assignee: IHI Corporation
    Inventors: Shunsuke Nishii, Shinichi Kaneda, Kenji Bunno, Yutaka Uneura
  • Patent number: 10544792
    Abstract: Molten metal transfer pump, in which a shaft (4) with the impeller (5) mounted on the shaft (4) is installed on the upper bearing (2) and the lower journal plain bearing (3). The lower journal plain bearing (3) has rotor (15) and stator (16) parts. The rotor part (15) is made in the form of two split bushings (17) mounted on the shaft (4), and the stator part (16) is made in the form of two split bushings (18) fixed in the cage (19) in axial alignment with the shaft (4). Bushings (17) (18) are fixed correspondingly with flat rings (24) (33) and composed of cylinder segments (20), (28) equidistantly placed in a circumferential direction, located correspondingly in the cylindrical groove (21) on the shaft and cylindrical groove (29) of the cage (19) and fixed with cone hold-down rings (22), (30) radially, and with spring rings (23), (31) axially.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: January 28, 2020
    Assignee: JOINT STOCK COMPANY “AKME-ENGINEERING”
    Inventors: Sergey Yurievich Schutsky, Andrei Nikolaevich Agrinskiy, Nikolai Nikolaevich Pavlov, Alexander Nikolaevich Bykov, Boris Valentinovich Orlov, Nikita Igorevich Simonov
  • Patent number: 10539190
    Abstract: A rolling bearing with sealing device provided on each side of the rolling bearing in order to prevent the entry of contaminants inside the rolling bearing, the rolling bearing having a non-rotating outer ring and a rotating inner ring and with a plurality of rolling bodies placed between them. The sealing device provided with first and second shields arranged axially in series between them across a cavity defined by the two rings, the first shields integral with the outer ring and the second shields integral with the inner ring and defining with the first shields an annular gap, which has a substantially constant axial thickness and is radially bounded by a first sealing labyrinth arranged in the region of the outer ring and a second sealing labyrinth arranged in the region of the inner ring.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: January 21, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventor: Riccardo Restivo
  • Patent number: 10519958
    Abstract: Systems and methods to help provide lubricant to a bearing in a compressor are disclosed. The embodiments disclosed herein generally are directed to systems and methods to provide a lubricant flow to the bearing, where the lubricant flow relies on the rotation of a shaft of the compressor, so that the lubricant flow can be independent of a power supply.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: December 31, 2019
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Mark W. Harrison, Jon C. Johnson, Todd W. Smith
  • Patent number: 10502080
    Abstract: Aspects of the disclosure are directed to a seal associated with an engine of an aircraft. The seal includes a plurality of lands, and a barrel coupled to the lands and formed from a plurality of segments, where the segments are coupled to one another such that the barrel is substantially non-linear.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: December 10, 2019
    Assignee: United Technologies Corporation
    Inventors: David E. Gambardella, Nicholas W. Oren
  • Patent number: 10495087
    Abstract: A compressor and a method of assembling the compressor are provided. The compressor includes: a shell; a motor arranged in the shell, the motor having a stator, a spacer mounted with a first bearing therein, a drive shaft supported by the first bearing and a rotor fixed onto the drive shaft; a low bearing support; a positioning member positioning the second bearing and being connected to the low bearing support; and a second bearing connected to the positioning member and/or the low bearing support and supporting the drive shaft. Furthermore, the positioning member may be removed from or maintained in the compressor after it is assembled. The present disclosure can avoid the adverse effects of the gravity of the rotor and the drive shaft and/or the magnetic force between the rotor and the stator on positioning the bearings and the drive shaft and can improve positioning accuracy and assembling efficiency.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: December 3, 2019
    Assignee: Danfoss (Tianjin) Ltd.
    Inventors: Zhou Xueyou, Ma Haiyun, Wu Zhipeng, Zhang Zhiguo, Meng Zhiqiang
  • Patent number: 10428670
    Abstract: An arrangement of a rotating component and a stationary component of a gas turbine engine includes a rotating component, a stationary component positioned to define an actual gap between the rotating component and the stationary component, and a flow restriction feature formed at one of the stationary component or the rotating component. The flow restriction feature is configured to induce a recirculation flow at the actual gap, thereby defining an effective gap between the rotating component and the stationary component to reduce a leakage flow therebetween, while maintaining the actual gap greater than the effective gap.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: October 1, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventor: Philip Robert Rioux
  • Patent number: 10385714
    Abstract: In a seal structure that seals a gap between a first structure and a second structure which faces the first structure in a radial direction and rotates relative to the first structure, one of the first structure and the second structure has a base surface and a step surface that protrudes toward the other side from the base surface, and the other is provided with: a first fin which extends toward the step surface and forms a first gap between the step surface; a second fin that, on the downstream side of the first fin, extends toward the base surface and forms a second gap between the base surface; and a protrusion part that is disposed between the first fin and the second fin and that divides a leak flow, into a first vortex along the first fin and a second vortex along the second fin.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: August 20, 2019
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Yoshihiro Kuwamura, Kazuyuki Matsumoto, Hiroharu Oyama, Yoshinori Tanaka, Toyoharu Nishikawa, Hidekazu Uehara, Shin Nishimoto
  • Patent number: 10359117
    Abstract: Aspirating face seal between high and low pressure regions of turbomachine between rotatable and non-rotatable members of turbomachine includes gas bearing rotatable and non-rotatable face surfaces, non-rotatable face surface mounted on annular slider on non-rotatable member. Retracting means retracts annular slider away from rotatable member and non-rotatable face surface away from rotatable surface and includes circumferentially spaced apart non-coiled springs axially disposed between slider and non-rotatable engine member. Leaf springs may include first and second ends mounted or attached to first and second mounting lugs or tabs attached to non-rotatable member and slider respectively and middle portion between ends. Springs oriented for retracting slider if slider contacts rotatable member. Primary and starter seal teeth may be mounted on carrier on rotatable member. Primary seal tooth may be on non-rotatable member and starter seal tooth on rotatable member.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: July 23, 2019
    Assignee: General Electric Company
    Inventors: Brian Joseph Prenger, Richard Alan Wesling, Nathan Evan McCurdy Gibson, Ravindra Shankar Ganiger, Narendra Anand Hardikar, Anand Aravindrao Kulkarni
  • Patent number: 10323537
    Abstract: The present disclosure relates to a tip clearance control assembly of a gas turbine including a casing, a plurality of blades, a labyrinth seal, and a shroud. The casing guides a flow of combustion gas. The plurality of blades is located inside the casing in such a manner as to be coupled to a rotary shaft of the gas turbine. The labyrinth seal is located at the front end portion of each blade. The shroud surrounds the front end portion of each blade. The casing includes an outer casing having dove tail slots and an inner ring segment having dove tail coupling portions, so that the dove tail coupling portions moves in an axial direction and a radial direction with respect to the gas turbine.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: June 18, 2019
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventor: Sungchul Jung
  • Patent number: 10301967
    Abstract: A turbine vane assembly for a gas turbine engine is disclosed and includes an airfoil rotatable about a first axis transverse to an engine longitudinal axis. The airfoil includes an endwall and at least one protrusion disposed on the endwall configured for obstructing flow through a gap between the endwall and a static structure of the gas turbine engine.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: May 28, 2019
    Assignee: United Technologies Corporation
    Inventors: Thomas N. Slavens, Steven Bruce Gautschi
  • Patent number: 10281046
    Abstract: The fluid machine includes a stationary member (6), a rotary member (5) and a labyrinth seal (9) including a succession of stationary steps (11) formed on the stationary member (6), and a succession of rotary steps (14) formed on the rotary member (5). The labyrinth seal (9) further includes a plurality of stationary recesses (18) each formed in a radial wall portion (12) of a respective stationary step (11), and a plurality of rotary recesses (21) each formed in a radial wall portion (16) of a respective rotary step (14). Each stationary step (11) defines a stationary projection (19) delimited by the stationary recess (18) formed on said stationary step (11), and each rotary step (14) defines a rotary projection (22) delimited by the rotary recess (21) formed on said rotary step (14). The axial width (Wr) of each of the stationary recesses (18) and of the rotary recesses (21) substantially equals the axial width (Wp) of each of the stationary projections (19) and of the rotary projections (22).
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: May 7, 2019
    Assignee: Danfoss Commercial Compressors
    Inventors: Arnaud Daussin, Patrice Bonnefoi, Yves Rosson, Nicolas Nouyrigat
  • Patent number: 10227885
    Abstract: Provided is a turbine. One of a tip portion of a blade and a portion of a partition plate outer ring corresponding to the tip portion of the blade is provided with a step part having a step face that protrudes toward the other, and the other is provided with seal fins) extending out with respect to the step part and forming minute clearance between the step part and the other. The step part facing the seal fins is configured to protrude so that a cavity forming a main vortex and counter vortex being formed by the main vortex are formed on an upstream side of the seal fins. The cavity is formed so that an axial width dimension and a radial height dimension satisfy Formula expressed by 0.45?D/W?2.67.
    Type: Grant
    Filed: September 18, 2012
    Date of Patent: March 12, 2019
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Yoshihiro Kuwamura, Kazuyuki Matsumoto, Hiroharu Oyama, Yoshinori Tanaka, Asaharu Matsuo
  • Patent number: 10174792
    Abstract: A tolerance ring including a sidewall having a first and a second opposite major surfaces spaced apart by a thickness, wherein the first major surface defines an inner diameter of the tolerance ring at a first location of the sidewall and an outer diameter of the tolerance ring at a second location of the sidewall. A method of forming a tolerance ring including providing a strip of material comprising a first, a second, a third, and a fourth edge, shaping the first edge of the strip toward the third edge, and shaping the second edge of the strip toward the fourth edge.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: January 8, 2019
    Assignee: SAINT-GOBAIN PERFORMANCE PLASTICS RENCOL LIMITED
    Inventor: Neil James
  • Patent number: 10119412
    Abstract: An air seal includes a sealing gland configured to retain a ferro-fluid and one or more seals. A portion of the one or more seals is configured to extend into the sealing gland. A gas turbine engine, includes the air seal. A method of sealing low pressure air from high pressure air, includes the steps of providing a sealing gland configured to retain a ferro-fluid, distributing the ferro-fluid into the sealing gland, providing one or more seals, wherein a portion of the one or more seals is configured to extend into the sealing gland, and removing the ferro-fluid from the sealing gland.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: November 6, 2018
    Assignee: United Technologies Corporation
    Inventor: Gary D. Roberge
  • Patent number: 10041367
    Abstract: A first aspect of the invention provides an axially faced seal system for a radial tip of a turbine component, the system comprising: a stationary turbine component; a rotating turbine component; and a seal ring mounted to the stationary turbine component, the seal ring extending axially to the rotating turbine component and engaging the rotating turbine component on a side surface, wherein the side surface of the rotating turbine component is on a continuous, rotating mating ring having a 360 degree arc.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: August 7, 2018
    Assignee: General Electric Company
    Inventors: William Edmund Girzone, Xiaoqing Zheng
  • Patent number: 9956872
    Abstract: A carrier bearing assembly includes a bracket, a mounting structure permitting the bracket to be mounted to a frame of a vehicle, an opening in the bracket extending through the bracket, from a first lateral side of the bracket to a second lateral side of the bracket, the opening substantially offset (e.g., an inch or more off center) in a direction; and a bearing fitted into the opening permitting a driveshaft of the vehicle to pass through and to substantially constrain movement of the driveshaft. Additionally, the opening can be formed as a non-straight hole allowing the driveshaft to pass through the bearing at a non-perpendicular angle. The carrier bearing assembly permits a substantial correction one more operating angle of the driveshaft by constraining the angle of a portion of the driveshaft.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: May 1, 2018
    Assignee: Sandcraft, LLC
    Inventors: Jonathan Roberts, Brent Reynolds
  • Patent number: 9879786
    Abstract: A rotary machine includes turbine moving blades (50); a casing (10) covering the turbine moving blades (50) so as to define a gap at an outer circumferential side of the turbine moving blades; a leaf seal (70) having a seal body (71) that is disposed in the gap so as to protrude radially inward from the casing (10) and is capable of coming into contact with the turbine moving blades (50), and a high-pressure-side plate member (73) that is disposed along a face facing a high pressure side of the seal body (71); and a swirling flow inhibitor (80) that is provided on the high pressure side of the leaf seal (70) in the gap and inhibits a swirl flow flowing through the gap in a circumferential direction.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: January 30, 2018
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Yoshihiro Kuwamura, Koichi Ishizaka, Yoshiyuki Okabe, Kazuyuki Matsumoto, Hiroharu Oyama, Hidekazu Uehara, Yoshinori Tanaka, Shin Nishimoto
  • Patent number: 9856886
    Abstract: An assembly can include a first radial compressor wheel that has a rotational axis and that includes a hub surface that includes an annular ridge disposed at a radius measured from the rotational axis; a second radial compressor wheel that includes a hub surface; and an annular baffle disposed at least in part between the hub surfaces where the annular baffle includes an outer surface and an inner edge that defines an opening having a central axis where the outer surface includes a surface portion to one side of the inner edge that faces the hub surface of the first radial compressor wheel, where the surface portion includes an annular channel over a radial width measured from the central axis and where the radial width spans the radius of the annular ridge.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: January 2, 2018
    Assignee: Honeywell International Inc.
    Inventors: Vaclav Kares, Vit Houst, Ondrej Lednicky, Michal Mokos, Milan Nejedly, Zbynek Oseljsek, Daniel Turecek
  • Patent number: 9732627
    Abstract: According to an embodiment, a rotor blade cover section is integrated with the rotor blades at leading ends thereof. A plurality of sealing fins is disposed at the rotor blade cover section, the sealing fins forming a predetermined clearance relative to an inner peripheral portion of the nozzle outer ring. An annular solid particle trapping space is disposed at the inner peripheral portion of the nozzle outer ring, the solid particle trapping space communicating with an inlet of a steam leak and trapping solid particles that flow in with steam. In the sealing structure, the nozzle outer ring has a through hole through which the solid particles are to be discharged from the solid particle trapping space toward a downstream stage of the steam turbine.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: August 15, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kenichi Okuno, Yoshifumi Iwasaki, Yoriharu Murata, Toshio Hirano, Itaru Murakami, Shinichiro Ohashi
  • Patent number: 9702403
    Abstract: A non-locating bearing assembly is configured to rotatably support a shaft relative to a housing while permitting relative axial displacement of the shaft relative to the housing. The bearing assembly includes a bearing having inner and outer rings and that is configured for transmitting radial and axial forces, and a bearing support attachable to the housing and including a support section having a partially cylindrical seat surface for receiving one of the inner and outer bearing rings and forming a sliding seat therefor. The sliding seat allows a relative axial displacement between the support section and one of the inner and outer bearing rings. A spring is disposed on or in the bearing support for generating a force in the axial direction between the bearing support and the one of the inner and outer bearing rings, and the spring element is formed from a segment of the bearing support.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: July 11, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventors: Burkard Beck, Alexander Dilje, Hans-Juergen Friedrich, Helmut Hauck
  • Patent number: 9677618
    Abstract: A bearing assembly includes a housing having an interior cavity, an opening, and an inward facing seal mounting surface. The assembly includes a bearing and a shaft mounted in the bearing for rotation about a central axis. The assembly includes a seal positioned axially between the interior cavity and the exterior of the housing to inhibit contaminants from entering the housing and damaging the bearing. The seal has a bearing side, an opening side, and a gap surface facing a corresponding surface that is either an outward facing surface of the shaft or thee inward facing seal mounting surface of the housing. The gap surface is spaced from the corresponding surface by a clearance gap. The width of the clearance gap increases from the bearing side to the opening side to direct fluid in the clearance gap away from the interior cavity as the shaft rotates.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: June 13, 2017
    Assignee: Lincoln Industrial Corporation
    Inventor: Paul G. Conley
  • Patent number: 9650907
    Abstract: A labyrinth seal is provided for sealing the annular interspace between the rotor and the stator of a steam turbine or gas turbine. The labyrinth seal includes a multiplicity of sealing strips which are arranged in series in the axial direction and fastened on the stator and project into the interspace. The sealing strips interact, with sealing effect, with rotor-side sealing elements which are arranged in a staggered manner. An improved sealing effect is achieved by the sealing strips in the cold installed state being offset in relation to a symmetrical position, wherein the offset has the reverse direction and the same amount as the distance by which the sealing strip is displaced relative to adjacent rotor-side sealing elements as a result of thermal expansions of the stationary and rotating components and support structure when being heated from the cold installed state to a hot steady-state operating condition.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: May 16, 2017
    Assignee: ANSALDO ENERGIA IP UK LIMITED
    Inventors: Cyrille Bricaud, Ulrich Robert Steiger, Axel Heidecke, Carlos Simon-Delgado
  • Patent number: 9528608
    Abstract: A sealing element for sealing a cylindrical inner surface of a first machine component and a cylindrical outer surface of a second machine component includes an inner ring, an outer ring arranged coaxially with respect to the inner ring, and a sealing gap, which is formed by an exterior lateral face of the inner ring and an interior lateral face of the outer ring. In an axial section through the common axis of the inner ring and the outer ring the sealing gap has a profile having an inlet section as a first end portion of the sealing gap having a first radius to the common axis; an outlet section as a second end portion of the sealing gap having a second radius to the common axis, wherein the second radius is smaller than the first radius; and a meander section, which adjoins the inlet section and which has a monotonically decreasing radius.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: December 27, 2016
    Assignee: Paul Mueller GmbH & Co. KG Unternehmensbeteiligungen
    Inventors: Manfred Elbacher, Andreas Radke
  • Patent number: 9394988
    Abstract: A ring seal for a machine component is provided. The ring seal includes a main body. The main body includes an inner surface defining an inner periphery. The main body also includes an outer surface defining an outer periphery. The ring seal also includes a tab having a height and a width. The tab extends from the main body. The tab is configured to contact at least one of a first interfacing surface and a second interfacing surface of the machine component to provide sealing therebetween.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: July 19, 2016
    Assignee: Electro-Motive Diesel, Inc.
    Inventor: Saket A. Mishra
  • Patent number: 9360102
    Abstract: A gearing having a shaft that projects from the gear interior into the environment, the shaft being sealed with the aid of at least one contactless seal, and the opening of the contactless seal, which is oriented toward the interior of the gearing, i.e., the spatial region of the gearing that contains the lubricating oil, being disposed above the lubricating oil level that comes about when the gearing is not in operation, a tin piece being disposed between the opening and the gear-tooth piece situated closest to this opening and generating lubricating oil waves and/or lubricating oil foam from the lubricating oil bath.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: June 7, 2016
    Assignee: SEW-EURODRIVE GMBH & CO. KG
    Inventors: Tobias Schwan, Jürgen Megerle, Alexander Hüttinger
  • Patent number: 9353640
    Abstract: A turbine includes a blade, a structure installed at a tip section side of the blade via a gap and configured to relatively rotate with respect to the blade, a step section formed at the tip section of the blade, having at least one step surface, and protruding toward a portion opposite to the tip section of the structure, a seal fin formed at the portion opposite to the tip section of the structure, extending toward the step section, and configured to form a micro gap between the step section and the seal fin, and a cutout section formed at the step surface to be connected to an upper surface of the step section. The cutout section guides a separation vortex separated from a main stream of a fluid passing through the gap toward the seal fin on the upper surface of the step section.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: May 31, 2016
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Yoshihiro Kuwamura, Kazuyuki Matsumoto, Hiroharu Oyama, Yoshinori Tanaka, Asaharu Matsuo
  • Patent number: 9350210
    Abstract: Spark suppression shield for electric motors relates to universal commutator motors and to permanent magnet DC motors operating in environment containing flammable or explosive gases. The collar shaped as a wall is extending from bearing frame and surrounding commutator in approximately it's total height, where the gap in radial direction between commutator and collar is up to 3 mm and the collar might or might not have collar openings.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: May 24, 2016
    Assignee: NELA RAZVOJNI CENTER D.O.O.
    Inventors: Simon Zgaga, Igor Markic, Martin Arnolj, Matjaz Cemazar
  • Patent number: 9207144
    Abstract: Provided is a pinhole inspection apparatus for can bodies capable of effectively preventing entrance of ambient light to a photodetector side through a gap between a movable plate and a rotating turret that may be formed due to a surface condition or the like. The pinhole inspection apparatus of the present invention includes: a rotating turret having a penetrating through hole; a movable plate provided on a stationary frame opposite the rotating turret; a can body holding member supporting a can body; a photodetector detecting light leaking inside the can body; and a light source irradiating the can body with light. The pinhole inspection apparatus is characterized in that a detour path formed by a pair of shield parts spaced apart a predetermined distance and opposite from each other is provided as a shield mechanism in an entire outer peripheral region of the rotating turret.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: December 8, 2015
    Assignee: TOYO SEIKAN GROUP HOLDINGS, LTD.
    Inventors: Yasuhiro Kouji, Yuuma Ishii, Tomoki Seo
  • Patent number: 9181959
    Abstract: An example housing of a cabin air compressor assembly includes a main body portion and a motor outlet duct extending radially from the main body portion. The motor outlet duct interfaces with the main body portion at an interface area. A ratio of a radius of the interface area to an inner diameter of the motor outlet duct is from 0.113 to 0.162.
    Type: Grant
    Filed: August 7, 2012
    Date of Patent: November 10, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Seth E. Rosen, Brent J. Merritt
  • Patent number: 9181817
    Abstract: The present disclosure relates to a seal assembly for a turbomachine that includes at least one arcuate plate, a biasing member, and a packing ring. In addition, the seal assembly includes a plurality of arcuate teeth disposed intermediate to the packing ring and the rotor. The plurality of arcuate teeth includes at least one subset of arcuate teeth. The clearance of at least one of the arcuate teeth is different from the clearances of the rest of the arcuate teeth. The clearances of the arcuate teeth of the at least one subset do not progressively increase going from an upstream to a downstream side of the turbomachinery.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: November 10, 2015
    Assignee: General Electric Company
    Inventors: Hrishikesh Vishvas Deo, Binayak Roy
  • Patent number: 9151391
    Abstract: A labyrinth seal includes a first labyrinth ring and a second labyrinth ring. In an installed state of the labyrinth seal, the first labyrinth ring and the second labyrinth ring engage in each other in an at least partially overlapping manner and are rotatable relative to each other. Furthermore, in the installed state, mutually-opposing surfaces of the first and of the second labyrinth ring have different wear resistances.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: October 6, 2015
    Assignee: AKTIEBOLAGET SKF
    Inventors: Andreas Kern-Trautmann, Mathias Seuberling
  • Patent number: 9140366
    Abstract: A bearing isolator seal includes a rotor and stator wherein the stator has inboard and outboard radial projections which define a groove bounded by groove side faces and a groove bottom face. The rotor extends radially and then axially so as to lie closely adjacent to the terminal end of the outboard radial projection on the stator to define an entrance passageway. The bearing isolator seal includes a surface geometry which is believed to result in improved exclusion of contaminants, particularly from high velocity water spray, wherein the entrance passageway is angled to increase the rotational effects of exclusion during shaft rotation, and wherein the groove side faces are also angled to assist in redirecting spray and other contaminants away from the passageway.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: September 22, 2015
    Assignee: Flowserve Management Company
    Inventors: Jason Ferris, Paul Bender, Jason Malocha, Joseph Barker
  • Patent number: 9074486
    Abstract: The present disclosure relates to a seal assembly for a turbomachine that includes at least one arcuate plate, a biasing member, and at least one packing ring segment. The packing ring segment includes at least one barrier that restricts circumferential flow of a fluid along the packing ring segment. In addition, the seal assembly includes a plurality of arcuate teeth disposed intermediate to the packing ring segment and the rotor. The clearances of at least two of the arcuate teeth are different from one another.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: July 7, 2015
    Assignee: General Electric Company
    Inventors: Hrishikesh Vishvas Deo, Binayak Roy
  • Patent number: 8936431
    Abstract: A shroud for a turbine and a method of assembling is provided. The turbine includes a housing, a rotatable shaft and a bucket extending outward therefrom. The shroud includes an alignment member which is coupled to the housing, wherein the alignment member includes a first end, a second end and a body extending between the first and second ends. The second end includes an arcuate portion to facilitate fluid flow downstream from the bucket. The shroud further includes a seal coupled to the body to facilitate sealing a gap defined between the bucket and the body.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: January 20, 2015
    Assignee: General Electric Company
    Inventors: Rohit Chouhan, Sumeet Soni
  • Patent number: 8936247
    Abstract: A seal assembly for sealing a stationary component and a rotating component including a seal tooth mating surface for mating with a seal tooth, the seal tooth mating surface including a plateau portion for sealingly receiving the seal tooth during a steady-state operation of the seal assembly and a first concave portion adjacent to the plateau portion for receiving the seal tooth with a clearance during a first non-steady-state operation of the seal assembly, wherein the seal tooth is coupled to one of the stationary component and the rotating component and the seal tooth mating surface is coupled to the other of the stationary component and the rotating component.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: January 20, 2015
    Assignee: General Electric Company
    Inventor: Xiaoqing Zheng
  • Patent number: 8911205
    Abstract: A knife edge seal assembly includes at least one knife edge and at least one honeycomb ring seal. The at least one knife edge has material removed to a first knife edge radial height and the least one honeycomb ring seal has material removed to a finished radial thickness for sealable engagement with the at least one knife edge. The finished radial thickness of the replacement honeycomb ring seal establishes a first radial gap between an inner annular surface of the replacement honeycomb ring seal and the knife edge before the knife edge seal assembly begins rotating in the gas turbine.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: December 16, 2014
    Assignee: United Technologies Corporation
    Inventors: William M. Rose, Robert A. Charbonneau
  • Patent number: 8820749
    Abstract: A labyrinth sealing device is disclosed for use between a rotating shaft and a bearing housing. In some embodiments, an internal stator engages the housing and a rotor engages the shaft. A labyrinth pathway is defined between the rotor and stator to prevent the migration of lubricants and/or contaminants in either direction. The rotor acts as a running surface for the sealing element, but may also with a ground surface of the rotor to provide a pump that continuously draws lubricant away from the sealing lip toward a sump. In another embodiment, the stator and sealing element are combined as a single element formed from a sealing material. A recess in the sealing lip creates a pressure differential at the sealing surface and minimizes wear.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: September 2, 2014
    Assignee: Garlock Sealing Technologies, LLC
    Inventors: Christopher E. Tones, Gregory Burnett, Kwongvoon Wong, Earl Rogalski
  • Patent number: 8784045
    Abstract: A seal assembly including first and second components; a seal arranged between the first and second components to seal a secondary flow region from a primary flow region; and a second recess portion provided on a surface of the second component between the seal and the primary flow region, the second recess portion further being arranged to receive a first portion of a flow from the secondary flow region and being configured to promote a second flow feature within the second recess portion, wherein the second recess portion is set back from the surface of the second component such that a second portion of the flow from the secondary flow region bypasses the second recess portion.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: July 22, 2014
    Assignee: Rolls-Royce PLC
    Inventors: Tatjana Zoric, James D. Godwin
  • Patent number: 8740226
    Abstract: In a system for contactlessly sealing a rotably mounted shaft from a housing, and a gear unit, oil is provided in the interior of the housing, the rotating shaft in particular projecting from the interior to the outer area, wherein a centrifugal disk is provided, which is connected to the shaft in torsionally fixed manner and has at least partially radially extending bores, which connect oil from a centrifugal chamber to a catch basin surrounding the centrifugal disk.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: June 3, 2014
    Assignee: Sew-Eurodrive GmbH & Co. KG
    Inventors: Ingo Schütterle, Andreas Heβ
  • Patent number: 8506170
    Abstract: A bearing is disclosed comprising an inner ring concentrically disposed with an outer ring with rotational elements therebetween adapted for allowing rotational movement of the inner ring relative to the outer ring. A relatively non-resilient isolator seal is mounted to the bearing.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: August 13, 2013
    Assignee: Baldor Electric Company
    Inventor: Christopher E. Hosmer
  • Patent number: 8444153
    Abstract: An arrangement (30, 80) for sealing a shaft (40, 60, 90, 110) in a casing (31, 81) by a hydraulic seal (50, 70, 100, 120) includes at least one essentially annular, radially inwardly open cavity (51, 71, 101, 121) and at least one essentially annular, radially outwardly directed sealing element (54, 74, 102, 122) which projects into the cavity (51, 71, 101, 121). To provide a hydraulic shaft seal, in which swirl and friction losses in the sealing medium are low and no leakage occurs, the hydraulic seal (50, 70, 100, 120) is arranged on the inner side (42, 62, 92) or on the outer side (111) of the shaft (40, 60, 90, 110) and the cavity (51, 71, 101, 121) or the sealing element (54, 74, 102, 122) of the hydraulic seal (50, 70, 100, 120) is connected to a wall (32, 82) of the casing (31, 81).
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: May 21, 2013
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventors: Miklos Gaebler, Stefan Hein
  • Patent number: 8434766
    Abstract: A seal is provided for preventing axial leakage through a radial gap between a stationary structure and a rotating structure. The radial gap is defined by an inner radial surface opposing an outer radial surface across the radial gap. The seal includes at least one land disposed on one of the inner radial surface and outer radial surface. At least one first tooth and at least one second tooth project from the other of the radial surfaces. The second tooth is shorter than the first tooth. At least one of the first tooth and second tooth, is configured to extend at an angle upstream. This angle is defined between a radial surface from which the first or second tooth projects and an upstream surface of the same tooth. The angle is less than or equal to about 80 degrees.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: May 7, 2013
    Assignee: General Electric Company
    Inventors: Xiaoqiang Zeng, Jonathon Edward Slepski, Tao Guo, Joshy John, Sudhakar Neeli
  • Patent number: 8424877
    Abstract: A method and systems for a purged seal for an annular space are provided. The purged seal includes a first baffle element that extends from an inner surface of the annular space into the annular space at an oblique angle and a second baffle element that extends from an outer surface of the annular space above the first baffle element in a direction opposite gravity flow into the annular space wherein the second baffle element extends at an oblique angle. The system also includes a third baffle element that extends from the inner surface above the first baffle element in a direction of gravity flow into the annular space wherein the third baffle element extends into the annular space at an oblique angle with respect to the inner surface and wherein a distal end of the third baffle element is positioned proximate a distal end of the second baffle element.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: April 23, 2013
    Assignee: General Electric Company
    Inventors: Constantin Dinu, James Michael Storey, Aaron John Avagliano, Douglas S. Byrd, Shaoping Shi, Judeth Brannon Corry, Allyson Joy Jimenez Huyke
  • Patent number: 8329267
    Abstract: A flexible edge seal is provided for a vacuum insulating glazing unit having a first glass pane and a second glass pane spaced-apart from the first. The edge seal comprises a seal member formed of a hermetically bondable material and having a first end, a second end and a center section disposed therebetween. The first end is hermetically bondable to a first glass pane. The second end is hermetically bondable to a second glass pane. The center section comprises a plurality of convolutes.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: December 11, 2012
    Assignee: Eversealed Windows, Inc.
    Inventors: Kenneth J. Bettger, David H. Stark
  • Patent number: 8303257
    Abstract: An arrangement between blade elements in a blade row in a turbine is described. Each blade element has at least one shroud element and a blade airfoil which abuts on, and is connected to, the shroud element, and essentially extends radially with regard to a principal axis of the blade row. When installed, the shroud element sides, which extend circumferentially, abut on the respectively adjacent shroud element of the respectively adjacent blade element, each forming an essentially radial gap. At least one blade element has a projection which projects into the shroud element of the abutting blade element and extends in the circumferential direction, and at least one blade element has a recess which accommodates such a projection. In the region of the projection or recess there is a stepped region of the radial gap, and the guiding of the radial gap in this stepped region is a labyrinth seal.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: November 6, 2012
    Assignee: ALSTOM Technology Ltd
    Inventors: Thomas Heinz-Schwarzmaier, Ulrich Rathmann, Carlos Simon-Delgado