Gap Or Clearance Patents (Class 277/411)
  • Patent number: 11008890
    Abstract: A case assembly for a gas turbine engine, includes a case with a case boss, said case boss including a peripheral wall that defines a first inner diameter in a first condition to receive a piston seal, and a second inner diameter in a second condition, the second condition including enlargement of the first inner diameter to form a second inner diameter and a bushing mounted within the second inner diameter, an inner diameter of the bushing defines a bushing inner diameter about equivalent to the first inner diameter to receive the piston seal.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: May 18, 2021
    Assignee: Raytheon Technologies Corporation
    Inventors: Jonathan Lemoine, Steven J Bauer, Judith F Brooks
  • Patent number: 11002362
    Abstract: A shaft seal assembly may include a stator and a rotor. The rotor may be configured to rotate with a shaft, and the stator may be engaged with a housing. The stator and rotor may be configured with radial and/or axial recesses and/or radial and/or axial projections. These various features may be configured such that the stator and rotor cooperate to form a ring cavity. A cooperating ring may be positioned in the ring cavity, and the cooperating ring may be configured such that is circumferentially expandable so that the cooperating ring changes size and/or shape when it rotates as opposed to when it is not rotating.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: May 11, 2021
    Assignee: Inpro/Seal LLC
    Inventor: Neil F. Hoehle
  • Patent number: 11002310
    Abstract: A rolling-element bearing unit includes at least one outer ring and at least one inner ring, and a plurality of rolling elements between the at least one outer ring and the at least one inner ring. The inner ring has a surface, which may be cylindrical, at an axial end region of the rolling-element bearing unit which surface is configured to contact a seal element. A projection extends radially outwardly from the surface at an angle and forms a guide surface facing the plurality of rolling elements.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: May 11, 2021
    Assignee: AKTIEBOLAGET SKF
    Inventors: Ralf Siebenbrodt, Volker Wendt, Karsten Zuhl
  • Patent number: 10982770
    Abstract: A hydrostatic seal configured to be disposed between relatively rotatable components. The seal includes a base. The seal also includes a shoe operatively coupled to the base and extending axially from a forward end to an aft end to define an axial length.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: April 20, 2021
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Eric A. Grover, Brian F. Hilbert
  • Patent number: 10900369
    Abstract: An aspirating face seal between high and low pressure regions of a turbomachine at a juncture between rotatable and non-rotatable members of turbomachine includes gas bearing rotatable and non-rotatable face surfaces. Primary and starter seal teeth and optional deflector seal tooth are mounted on seal teeth carrier on rotatable member. Non-rotatable face surface is mounted on an annular slider on the non-rotatable member. A pull-off biasing means urges the annular slider away from the rotatable member and the non-rotatable face surface away from the rotatable surface. A secondary seal is in sealing engagement with the annular slider in the low pressure region and the pull-off biasing means is located radially outwardly of the annular slider in the high pressure region. Biasing means may include coil springs within spring chambers of circumferentially spaced cartridges. Tongues extend inwardly from spring chambers into grooves in slider.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: January 26, 2021
    Assignee: General Electric Company
    Inventors: Nathan Evan McCurdy Gibson, Christopher Jon Potokar, Hariharan Manickavasagam Sarojini, Arnab Sen, Bikramjit Chatterjee
  • Patent number: 10890082
    Abstract: An aspirating face seal between high and low pressure regions of a turbomachine at a juncture between rotatable and non-rotatable members of turbomachine includes gas bearing rotatable and non-rotatable face surfaces. A starter seal tooth and optional deflector seal tooth are mounted on a seal teeth carrier on the rotatable member. The primary seal tooth and non-rotatable face surface are mounted on an annular slider on the non-rotatable member. A pull-off biasing means urges the annular slider away from the rotatable member and the non-rotatable face surface away from the rotatable surface. A secondary seal is in sealing engagement with the annular slider in the low-pressure region and the pull-off biasing means is located radially outwardly of the annular slider in the high pressure region.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: January 12, 2021
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Narendra Anand Hardikar, Nathan Evan McCurdy Gibson
  • Patent number: 10746040
    Abstract: A steam turbine system includes: a steam turbine having a casing into which steam is fed from an outside of the casing and a rotating shaft that is provided within the casing so as to be rotatable around a central axis; a deaerator that is connected to the steam turbine and that deaerates leaked steam that has leaked from a gap between the casing and the rotating shaft to the outside of the casing; a vacuum pump that is connected to the deaerator and that lowers a pressure within the deaerator; and a shaft sealing device that is connected to the deaerator and that seals the gap between the casing and the rotating shaft. The shaft sealing device has a seal member having a seal body, a housing, a biasing member, and a negative-pressure introduction part.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: August 18, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Tomoaki Nogami, Takuro Koda
  • Patent number: 10724546
    Abstract: A centrifugal compressor includes a casing, a first impeller, a motor, a cooling medium delivery structure, a shaft, and a first bearing. The casing has a first inlet portion and a first outlet portion. The first impeller is attached to the shaft and disposed between the first inlet portion and the first outlet portion. A first axial gap exists between the first impeller and the casing. The shaft is rotatably supported and axially moveable with respect to the casing by the first bearing. The motor is arranged inside the casing to rotate the shaft. The cooling medium delivery structure is configured to vary a supply of a cooling medium to the casing. An impeller clearance control apparatus for a centrifugal compressor includes a sensor and a controller. The controller controls a supply of a cooling medium to the casing based on a value detected by the sensor.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: July 28, 2020
    Assignee: DAIKIN APPLIED AMERICAS INC.
    Inventors: Jeffrey Allen Morgan, Fumiaki Onodera, Tsuyoshi Ueda
  • Patent number: 10718347
    Abstract: A turbomachinery gasket comprising at least a first curved elongated element having a coupling part configured to cooperate with a tubular assembly in order to keep the gasket in position on the tubular assembly, and an outer surface configured to seal against an outer casing provided to house the tubular assembly, the first curved elongated element comprising a first and a second free end, the first free end providing a first protruding lip and the second free end providing a second protruding lip, the first protruding lip being configured to overlap with the second protruding lip of the first curved elongated element or with a second protruding lip of a second elongated element functionally identical to the first one, so that, when the gasket is in use, a seal in that part of the gasket having said protruding lips is granted.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: July 21, 2020
    Assignee: Nuovo Pignone SRL
    Inventors: Franco Sarri, Andrea Bernocchi, Franco Smorti
  • Patent number: 10718270
    Abstract: A non-contact seal assembly is provided. The non-contact seal assembly includes a plurality of seal shoes arranged about a centerline in an annular array, the seal shoes including a first seal shoe extending axially along the centerline between a first shoe end and a second shoe end; a seal base circumscribing the annular array of the seal shoes; and a plurality of spring elements, each of the spring elements radially between and connecting a respective one of the seal shoes with the seal base, where the seal base and the plurality of spring elements are formed of a first material and the plurality of seal shoes are formed of a second material, where the first and second materials are joined together and the second material has a density lower than the first material.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: July 21, 2020
    Assignee: Raytheon Technologies Corporation
    Inventors: Conway Chuong, Tara L. D'Ambruoso, Michael DiFrancesco
  • Patent number: 10690248
    Abstract: The present disclosure relates generally to seal rings useful in oil-lubricated systems such as automobile transmissions, torque converters and automatic clutches. In one embodiment, the disclosure provides an injection molded seal ring comprising a circular ring body extending between a first end and a second end engageable with the first end, the circular ring body including an inner circumferential face; an outer circumferential face; a first lateral face; a second lateral face opposing the first lateral face; a recess formed in the outer circumferential face, the recess not extending to both the first lateral edge and the second lateral edge of the outer circumferential face; and an injection molding gate vestige disposed in the recess, the injection molding gate vestige not extending beyond the outer circumferential face.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: June 23, 2020
    Assignee: Saint-Gobain Performance Plastics L+S GmbH
    Inventor: Micro Gronitzki
  • Patent number: 10655492
    Abstract: An abrasive tip comprises an additive, the additive is configured to prevent adhesion of an organic component from an abradable seal onto an abrasive blade tip.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: May 19, 2020
    Assignee: United Technologies Corporation
    Inventors: James O Hansen, Christopher W Strock
  • Patent number: 10612669
    Abstract: A non-contact seal assembly includes a plurality of seal shoes, a seal base and a plurality of spring elements. A first of the spring elements includes a first mount, a second mount and a spring beam. The spring beam extends a length longitudinally along a centerline from the first mount to the second mount. The spring beam includes opposing first and second surfaces. The first surface is disposed a first distance from the centerline, and the second surface is disposed a second distance from the centerline. The first distance and the second distance change as the spring beam extends longitudinally along the centerline to provide at least a portion of the spring beam with a tapered geometry. The portion of the spring beam has a longitudinal length that is at least about five percent of the length of the spring beam.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: April 7, 2020
    Assignee: United Technologies Corporation
    Inventors: Alex J. Simpson, Christopher J. Peters, Zachary D. Ryan
  • Patent number: 10590935
    Abstract: An automotive electric liquid pump includes a pump housing comprising a first longitudinal end and a second longitudinal end, a rotor which defines a longitudinal rotor axis, a pump chamber inlet, a pump chamber outlet, an electric motor, a power electronics chamber, a pump chamber, and a separation wall. The electric motor comprises stator coils arranged at the first longitudinal end. The electric motor drives a pump rotor. The power electronics chamber comprises power semiconductors to drive the stator coils. The power electronics chamber is arranged at the second longitudinal end. The pump chamber is configured to have the pump rotor driven by the electric motor rotate therein so as to pump a liquid from the pump chamber inlet to the pump chamber outlet. The separation wall is arranged in a transversal plane. The separating wall separates the pump chamber from the power electronics chamber.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: March 17, 2020
    Assignee: PIERBURG PUMP TECHNOLOGY GMBH
    Inventors: Alessandro Malvasi, Giacomo Armenio
  • Patent number: 10550708
    Abstract: Aspects of the disclosure are directed to a floating, non-contact seal comprising: a shoe, and at least three beams, each beam having a first axial end and a second axial end, where the first axial ends are coupled to the shoe and the second axial ends are coupled to a ring structure. Aspects of the disclosure are directed to an engine comprising: a first structure, a second structure configured to rotate relative to the first structure, and a floating, non-contact seal that interfaces the first structure and the second structure, where the seal includes: a shoe, and at least three beams, where each beam has a first axial end and a second axial end, where the first axial ends are coupled to the shoe and the second axial ends are coupled to a ring structure.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: February 4, 2020
    Assignee: United Technologies Corporation
    Inventors: Jose R. Paulino, Conway Chuong, Joey Wong, Christopher J. Peters, Ross Wilson
  • Patent number: 10544695
    Abstract: Embodiments of the invention relate generally to rotary machines and, more particularly, to the control of wheel space purge flow in gas turbines. In one embodiment, the invention provides a turbine bucket comprising: a platform portion; an airfoil extending radially outward from the platform portion; a shank portion extending radially inward from the platform portion; at least one angel wing extending axially from a face of the shank portion; a platform lip extending axially from the platform portion, the platform lip disposed radially outward from the at least one angel wing; and a plurality of turbulators disposed along and extending outward from the face of the shank portion between the platform lip and the at least one angel wing.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: January 28, 2020
    Assignee: General Electric Company
    Inventors: Rohit Chouhan, Soumyik Kumar Bhaumik
  • Patent number: 10539034
    Abstract: A seal assembly for a turbine engine is disclosed and includes a fixed housing including an axial surface defining an inner diameter and an annular seal that is disposed within the housing and seal against a radial surface of the fixed housing. The annular seal includes a first surface transverse to an axis of rotation and a second surface parallel to the axis of rotation defining an inner periphery. The first surface includes a first notch spaced apart from the inner periphery and overlapping the inner diameter of the fixed housing.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: January 21, 2020
    Assignee: United Technologies Corporation
    Inventor: Jonathan Logan Miller
  • Patent number: 10508602
    Abstract: A sealing arrangement for sealing between a first stage nozzle and a plurality of aft frames includes a first inner seal and a second inner seal which are circumferentially oriented and circumferentially aligned. Each of the inner seals includes a wing extending radially inward at an oblique angle. A side seal is radially disposed between the first inner seal and the second inner seal. The side seal includes a first wing extending radially outward at an oblique angle and a second wing extending radially outward at an oblique angle, the first wing of the side seal sealingly interfaces with the wing of the first inner seal and the second wing of the side seal sealingly interfaces with the wing of the second inner seal.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: December 17, 2019
    Assignee: General Electric Company
    Inventors: Jesse Ellis Barton, Richard Martin DiCintio, Elizabeth Angelyn Monaghan
  • Patent number: 10502083
    Abstract: A turbomachine element includes a stator, a rotor, and a first sealing means for sealing between the rotor and the stator. The element is arranged to be active when the rotor is in the operating position of same around the axis of rotation thereof. The element includes an auxiliary pressure sealing means, sealing between the rotor and the stator and is arranged so that the two sealing means are active when the rotor is placed along the axis of rotation thereof during an assembly operation in a test position. In the test position, the rotor and the stator form an enclosure between said two sealing means.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: December 10, 2019
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Florence Irène Noëlle Leutard, Thibault Jamon, Olivier Renon
  • Patent number: 10428673
    Abstract: An aspirating face seal assembly for a turbo-machine including a rotor assembly having a first radially extending portion defining a rotor surface is disclosed. The aspirating face seal assembly includes a seal body including a second radially extending portion defining a bearing surface and having a plurality of return channels. The second radially extending portion is disposed in the turbo-machine such that the bearing surface is disposed facing the rotor surface. The aspirating face seal assembly further includes an annular ring including one or more openings. The annular ring is concentrically disposed on the second radially extending portion and between the rotor surface and the second radially extending portion and configured to rotate in an event of rub between the first radially extending portion and the annular ring. A turbo-machine including the aspirating face seal assembly and a method for operating an aspirating face seal are also disclosed.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: October 1, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Rodrigo Rodriguez Erdmenger, Nathan Evan McCurdy Gibson, Quang Tue Nguyen Tran
  • Patent number: 10422242
    Abstract: A method of applying an additive to an abrasive coated blade tip comprises applying the additive to the abrasive coated blade tip and wicking the additive into the abrasive coated blade tip, wherein the additive is configured to prevent adhesion of an organic component of an abradable seal onto the abrasive coated blade tip.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: September 24, 2019
    Assignee: United Technologies Corporation
    Inventor: Christopher W Strock
  • Patent number: 10370991
    Abstract: The present disclosure relates generally to a hydrostatic advanced low leakage seal having a shoe supported by at least two beams. An anti-vibration beam spacer is disposed in contact with two adjacent beams and operative to mitigate an externally induced vibratory response of the beams.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: August 6, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Ross Wilson, Michael G McCaffrey, John R Farris, Theodore W Hall, John J Korzendorfer, Elizabeth F. Vinson, Jeffrey Michael Jacques, Edwin Otero, John E Paul
  • Patent number: 10344621
    Abstract: A system for use in limiting axial movement between a hanger and a fairing assembly within a turbine assembly is provided. The hanger includes an inner radial hanger bend portion that defines a hook channel therein. The fairing assembly includes an outer surface, a hook member extending from the outer surface to mate with the hook channel, and a circumferential groove defined in the outer surface such that at least a portion of the hanger bend portion is positioned between the circumferential groove and the hook member. The system includes a retention member sized for insertion into the circumferential groove, wherein the retention member is configured to extend from the circumferential groove and press against the hanger bend portion to facilitate maintaining the hook member within the hook channel.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: July 9, 2019
    Assignee: General Electric Company
    Inventors: Derek Thomas Dreischarf, Courtland Earl Pegan, Jr., Scott Patrick Ryczek
  • Patent number: 10280780
    Abstract: A sealing system for a turbomachine includes an annular seal defining a centerline axis and an inner diameter sealing surface. The sealing system also includes a turbomachine component radially inboard of the annular seal having a surface defined on an outer diameter surface. The sealing surface of the turbomachine component has a radius of curvature configured to be non-concentric with respect to the inner diameter surface of the annular seal in a cold state. The radius of curvature of the surface is configured to be substantially concentric with respect to the inner diameter surface of the annular seal in a hot state.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: May 7, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventor: Russell J. Bergman
  • Patent number: 10077672
    Abstract: A ring-shaped compliant support for a gas turbine engine includes, among other things, an annular case, and an adjustment member that will turn relative to the annular case if exposed to thermal energy.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: September 18, 2018
    Assignee: United Technologies Corporation
    Inventor: Dmitriy A. Romanov
  • Patent number: 9951625
    Abstract: A turbine wheel for a turbine engine, comprising a disk carrying blades each having a platform, carrying an impeller connected by a stilt to a root. Each blade comprises an upstream radial wall and a downstream radial wall extending inwards from the platform of the blade. The roots of the blades are engaged into slots on the periphery of the disk, so that the radial walls of the blades and the platforms of the blades are circumferentially arranged end-to-end, and define inter-blade cavities radially inside the platforms, each accommodating an inter-blade sealing and vibration damping member. At least one member comprises an elastically deformable element configured so as to be elastically prestressed against the walls of a cavity in the member mounting position.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: April 24, 2018
    Assignee: SNECMA
    Inventors: Sébastien Serge Francis Congratel, Maurice Guy Judet
  • Patent number: 9771817
    Abstract: A sealing system for a rotatable element defining an axis of rotation includes a rotor blade including a shank and an angel wing extending axially from the shank. The sealing system also includes a stator vane positioned axially adjacent the rotor blade. The stator vane includes a platform extending in an axial direction over the angel wing such that a clearance gap is defined therebetween. The sealing system also includes a sealing mechanism including a portion of the platform and a portion of the angel wing. The sealing mechanism includes at least one obliquely oriented surface such that the clearance gap defines a converging nozzle.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: September 26, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Eric John Ruggiero, Gregory Paul Rodebaugh, Rinaldo Luigi Miorini
  • Patent number: 9702371
    Abstract: The invention relates to a sealing arrangement for a high-pressure space having a bounding element and a termination element. The bounding element has an outer sealing surface and the termination element has an inner sealing surface. The outer sealing surface and the inner sealing surface are arranged such that a sealing-off of the high-pressure space is achieved via a contact of the two sealing surfaces. In accordance with the invention the bounding element is designed such that a force in the direction of the inner sealing surface can act on the outer sealing surface due to a pressure in the high-pressure space. Thereby a sealing function is also achieved then when the termination element deforms due to the pressure in the high-pressure space. The sealing arrangement in accordance with the invention can be used particularly advantageously in pumps.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: July 11, 2017
    Assignee: Sulzer Management AG
    Inventors: Paul Meuter, Thomas Welschinger
  • Patent number: 9695940
    Abstract: A circumferential shaft seal segment includes a radial outer face, a radially inner face, a first axial face extending from the radial outer face to the radial inner face and a second axial face axially spaced from the first axial face and extending from the radially outer face to the radially inner face. The seal has a bleed slot in the radially inner face extending from the first axial face toward the second axial face, and there are first and second recesses in the radially inner face in communication with the bleed slot that extend from circumferentially opposite sides of the bleed slot.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: July 4, 2017
    Assignee: KAYDON RING & SEAL, INC.
    Inventors: George Perry Haynes, Jared Daniel Manry
  • Patent number: 9551232
    Abstract: A non-contacting seal is provided, including a first sealing face formed on an end of a primary ring and a second sealing face formed on an end of a mating ring. Grooves may be formed in at least one of the first and second sealing faces, such that the grooves extend from one edge of the respective sealing face to an intermediate radius of the respective sealing face. At least one groove may include an entrance edge along the one edge of the respective sealing face and a dam wall opposite the entrance edge. The at least one groove may also include two symmetric side walls extending from the entrance edge to the dam wall. The two symmetric side walls may include a first convex curve extending from the entrance edge to a transition point and a second concave curve extending from the transition point to the dam wall.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: January 24, 2017
    Assignee: Dresser-Rand Company
    Inventor: Olivier Lebigre
  • Patent number: 9441650
    Abstract: A fluid resistance reducing method and a resistance reducing propulsion device are disclosed, wherein vane-shaped devices are inserted in the fluid at a certain interval along a vertical direction to a moving velocity direction of the fluid, and thus the fluid is divided into several limited zones to limit the fluid and solidify moving state; resultantly the fluid is prevented from directly crashing with fixed wall of a surface of an object to be resistance-reduced and thus a moving velocity direction of the vane-shaped device accords with a predetermined direction of a tangent line of the fixed wall and reaction force on the fluid provides a centripetal force for the fluid to turn, so as to force the fluid to gradually change the velocity direction along the fixed wall and manually intervene with parts of the object to force the fluid near a boundary face to moves stratifiedly and orderly.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: September 13, 2016
    Inventor: Lisong Zou
  • Patent number: 9405836
    Abstract: A continuous flow centrifuge system is provided. The system includes a rotor, a stator, a stator housing, upper and lower bearing plates, upper and lower bearings, first and second snap rings, and lip seal. The upper bearing rotatably secures a shaft of the rotor in the upper bearing plate. The first snap ring secures the upper bearing to the rotor shaft. The lip seal is over the upper bearing and forms a rotatable seal with the upper bearing plate. The second snap ring secures the lip seal to an inner diameter of the upper bearing plate. The upper and lower bearing plates are secured to the stator housing so that the rotor is operatively aligned with the stator.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: August 2, 2016
    Assignee: ALFA WASSERMANN, INC.
    Inventors: Kurt Spiegel, Sorin Weissman, Bill Lepse, Blaine J. Marsh
  • Patent number: 9303554
    Abstract: The power-assisted supercharger (10) includes: a turbocharger (12) in which a turbine (12a) is rotationally driven by exhaust gas (7) from an engine (40), a compressor (12b) rotationally driven by the turbine compresses intake air (5) and supplies the intake air to the engine; an electric motor (14) connected to a rotary shaft (12c) connecting the turbine and the compressor, the electric motor to add rotational force to the turbocharger; and a motor controller (20) to control a drive current (I) to the electric motor required for an assist operation for the turbocharger, by open loop, based on an accelerator opening degree (A) of the engine and a rotational speed (NE) of the engine. In this power-assisted supercharger, a turbo lag can be reduced by itself, power consumption can be small even in a range in which the rotational speed is high, malfunctions or unnecessary power consumption can be prevented, a control system can be simplified, and the installation space and the weight thereof can be small.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: April 5, 2016
    Assignee: IHI CORPORATION
    Inventors: Yuichiro Mizuno, Kazuhiko Shinagawa
  • Publication number: 20150132116
    Abstract: A hydrodynamic face seal ring for use in a rotary machine includes a support ring having at least two support ring segments and a radially-extending, first face. The support ring is configured to releasably couple to an inner surface of an outer casing of the rotary machine. The face seal ring also includes a sealing ring substantially concentric with the support ring. The sealing ring includes at least two sealing ring segments and a radially-extending, second face. The sealing ring is releasably coupled to the support ring such that the first face is mated against the second face.
    Type: Application
    Filed: November 11, 2013
    Publication date: May 14, 2015
    Applicant: General Electric Company
    Inventors: Xiaoqing Zheng, Roderick Mark Lusted, Azam Mihir Thatte, Christopher David Suttles
  • Patent number: 9016692
    Abstract: In sealing rings for a labyrinth seal that are arranged on a rotationally symmetrical component and in frictional contact with a stationary run-in layer, a part of the sealing ring (8) that contacts the run-in layer is in the form of a wear protection ring segment (15) that is built up on a truncated sealing ring (14) and which includes a metal matrix (16) with wear protection particles (13) embedded therein. The manufacture of the wear protection ring segment is carried out by laser build-up welding, wherein the proportion of wear protection particles contained in the metal powder flow supplied to the laser beam can be controlled and increased in an edge or tip region of the sealing ring.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: April 28, 2015
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventors: Thomas Haubold, Andreas Kohns
  • Patent number: 9017018
    Abstract: An annular seal positionable in a gap is disclosed herein. The annular seal includes a plurality of leaves positioned about a center axis. Each leaf extends to a distal end that is elastically deflectable relative to the center axis to accommodate changes in a size of the gap. The annular seal also includes a ring encircling the center axis and at least partially interconnecting the plurality of leaves together for concurrent installation and removal. The annular seal also includes a plurality of tabs projecting from the ring along the center axis. Each of the tabs is directly connected to at least one of the plurality of leaves such that elastic deformation of one of the plurality of leaves induces bending in the corresponding tab before inducing bending in the ring.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: April 28, 2015
    Assignee: Rolls-Royce Corporation
    Inventor: Wade Alan Vest
  • Patent number: 8991829
    Abstract: A non-contact labyrinth seal assembly, bearing assembly therewith, and method of construction thereof, has an outer rigid carrier and an inner sleeve. The carrier has an outer cylindrical flange and a radially inwardly extending leg and the sleeve has a cylindrical wall and a radially outwardly extending flange. A body is attached to at least one of the leg and the flange, wherein the body provides, at least in part, a purely non-contact labyrinth passage extending between the carrier and the sleeve.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: March 31, 2015
    Assignees: The Timken Company, Federal-Mogul Corporation
    Inventors: Scott B. Lattime, Kevin M. Dillon, Alicia Black, Richard Borowski, Roger Trentman, Stephen E. Brister, Carl F. Meadows, Brian M. Hupp, David G. Toth
  • Publication number: 20150078893
    Abstract: The present invention relates to a process for producing a seal arrangement (1) for a turbomachine which comprises a seal support (2) and a stripping lining (3) which is arranged on the seal support, wherein the seal support comprises a fiber-reinforced plastic and the stripping lining comprises polysiloxane, and wherein the seal support and the stripping lining are prepared in a non-cured state and are arranged in direct contact with one another in accordance with the configuration of the seal arrangement, and are subsequently subjected to a common curing process such that fiber-reinforced plastic and polysiloxane cross-link with one another. The present invention further relates to a correspondingly produced seal arrangement and to a turbomachine having such a seal arrangement.
    Type: Application
    Filed: September 19, 2014
    Publication date: March 19, 2015
    Inventors: Siegfried SCHMID, Michael SCHOBER, Siegfried SIKORSKI, Axel MATTSCHAS, Robert BADER
  • Patent number: 8919781
    Abstract: A self-adjusting non-contact seal for sealing the circumferential gap between a first machine component and a second machine component includes structure which undergoes wear in the event of inadvertent contact with one of the machine components in such a way as to allow a reset of its radial distance from such machine component, compared to initial installation tolerances, while minimizing leakage.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 30, 2014
    Assignee: Advanced Technologies Group, Inc.
    Inventor: John F. Justak
  • 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
  • Publication number: 20140341733
    Abstract: A non-contacting seal is provided, including a first sealing face formed on an end of a primary ring and a second sealing face formed on an end of a mating ring. Grooves may be formed in at least one of the first and second sealing faces, such that the grooves extend from one edge of the respective sealing face to an intermediate radius of the respective sealing face. At least one groove may include an entrance edge along the one edge of the respective sealing face and a dam wall opposite the entrance edge. The at least one groove may also include two symmetric side walls extending from the entrance edge to the dam wall. The two symmetric side walls may include a first convex curve extending from the entrance edge to a transition point and a second concave curve extending from the transition point to the dam wall.
    Type: Application
    Filed: May 14, 2014
    Publication date: November 20, 2014
    Applicant: DRESSER-RAND SA
    Inventor: Olivier Lebigre
  • Publication number: 20140319777
    Abstract: A rotating device includes a rotator on which a magnetic recording disk is to be mounted, and a stationary body that supports the rotator in a freely rotatable manner through a fluid dynamic bearing. A lubricant is continuously applied to a lubricant applied portion in a gap between the rotator and the stationary body and from a second capillary seal to a first capillary seal through a dynamic pressure generating portion of the fluid dynamic bearing. This rotating device is structured so as to reduce an amount of the lubricant spilled and eventually dissipated when shock of substantially 1200 G is applied to be less than 5% of the total amount of the lubricant.
    Type: Application
    Filed: April 28, 2014
    Publication date: October 30, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS JAPAN ADVANCED TECH. CO.
    Inventors: Ryusuke SUGIKI, Mitsuo KODAMA, Akira NISHIO
  • Patent number: 8844935
    Abstract: A sealing arrangement for a bearing assembly. The sealing arrangement can include a static seal carrier coupled to a static component of the bearing assembly and including a first plurality of rings, a rotating seal carrier coupled to a rotating component of the bearing assembly and including a second plurality of rings, the first plurality of rings and the second plurality of rings disposed in an interdigitated arrangement so as to define a tortuous passageway therebetween, the tortuous passageway having one end in communication with a high pressure area of the bearing assembly and a second end in communication with a low pressure area of the bearing assembly, and a scraper seal coupled to the rotating seal carrier and disposed over the second end of the tortuous passageway.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: September 30, 2014
    Assignee: Gamesa Innovation & Technology, S.L.
    Inventor: Juan Redin
  • Publication number: 20140265146
    Abstract: A hydrodynamic mating ring includes a base and an insert coupled to the base. In embodiments, an insert has a coefficient of thermal expansion greater than the coefficient of thermal expansion of the base. A hydrodynamic seal assembly including a corresponding stator is also disclosed.
    Type: Application
    Filed: May 28, 2013
    Publication date: September 18, 2014
    Inventor: Adam Matthew Danaher
  • 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: 8807914
    Abstract: The present invention provides a seal device comprising a sealing passage which allows communication between a first space and a second space, and evacuation lines individually connected to the first space and the sealing passage. A gas feed line for feeding dry gas is connected to the sealing passage.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: August 19, 2014
    Assignee: Ebara Corporation
    Inventor: Hiroyuki Shinozaki
  • Patent number: 8800133
    Abstract: Gas turbine engine systems involving rotor bayonet coverplates and tools for installing such coverplates are provided. In this regard, a representative turbine assembly for a gas turbine engine includes: a turbine disk operative to mount a set of turbine blades; and a coverplate having an annular main body portion and a spaced annular arrangement of tabs extending radially inwardly from the main body portion with open-ended gaps being located between the tabs, the tabs being operative to secure an inner diameter of the coverplate to the turbine disk.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: August 12, 2014
    Assignee: United Technologies Corporation
    Inventors: Joseph T. Caprario, Daniel J. Griffin
  • Publication number: 20140205440
    Abstract: A seal assembly for rotary machine is provided. The seal assembly includes multiple compliant plates disposed between a stationary component and a rotary component of the rotary machine, and coupled circumferentially along the stationary component. Each compliant plate comprises a tip configured to be disposed facing the rotary component, and at least one plate slot extending from the stationary component towards the rotary component. The seal assembly also includes at least one annular resistance member configured to be coupled to the stationary component and disposed in the at least one plate slot in the compliant plates and one or more rotor slots or grooves located circumferentially on a surface of the rotary component proximate the tip of each of the plurality of compliant plates.
    Type: Application
    Filed: January 18, 2013
    Publication date: July 24, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Ajay Keshava Rao, Hrishikesh Vishvas Deo
  • 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: 8777202
    Abstract: A tool is disclosed for adjusting a seal. The tool includes an engagement block. The engagement block defines a slot configured to capture a portion of the seal. The tool further includes an impact surface connected to the engagement block, and a hammer head movable along a strike axis with respect to the engagement block and configured for striking the impact surface. Striking of the impact surface with the hammer head can cause movement of the seal.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: July 15, 2014
    Assignee: General Electric Company
    Inventors: John William Herbold, Charles V. Spanos