Relatively Rotatable Radially Extending Sealing Face Member (e.g., Face, Mechanical, Etc.) Patents (Class 277/306)
  • Patent number: 10969017
    Abstract: A method of determining wear of a seal element includes rotating a seal plate relative to the seal element and such that the seal plate and the seal element form a rotational sealing interface. The seal element includes an insert embedded in the seal element. A portion of the seal element is worn with a sealing face of the seal plate. The insert is contacted with the sealing face of the seal plate. A portion of the insert is worn to create a wear particle of the insert. The presence of the wear particle in a lubrication oil is sensed with an oil monitoring system.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: April 6, 2021
    Assignee: United Technologies Corporation
    Inventors: Changsheng Guo, Zaffir A. Chaudhry, Nasr A. Shuaib
  • Patent number: 10487844
    Abstract: In a mechanical seal, a stationary-side seal ring (20) is disposed on the high-pressure fluid side of a rotating-side seal ring (21), and fixed to a housing (1) and has sliding surfaces (20a), (20c), and (20d) supporting a rotating shaft (2) in both a radial direction and a thrust direction. The rotating-side seal ring (21) is axially movably fitted by a bellows (25) fitted on the rotating shaft (2). The rotating shaft (2) has an outer peripheral surface (2a) contacting and sliding on the radial sliding surface (20a) of the stationary-side seal ring (20) to be supported radially. Thrust rings (10a) and (10b) are provided between the stationary-side seal ring (20) and the rotating shaft (2), for supporting the rotating shaft (2) in thrust directions. The mechanical seal can eliminate the need for an additional bearing and provide stable performance as a bearing.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: November 26, 2019
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventor: Masatoshi Itadani
  • Patent number: 10370994
    Abstract: An assembly for use in a gas turbine engine is disclosed. The assembly includes a first component arranged adjacent to a second component to form a gap therebetween and a pressure activated seal that resists flow through the gap.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: August 6, 2019
    Assignees: Rolls-Royce North American Technologies Inc., Rolls-Royce Corporation
    Inventors: David J. Thomas, Joseph P. Lamusga, Ted J. Freeman, Aaron D. Sippel
  • Patent number: 10266017
    Abstract: A rotary joint for use with a central tire inflation system and a network of sensorized components for a driveline is provided. The rotary joint comprises a sealing gasket wear detection system and a rotary encoder disposed within a joint cavity. The network of sensorized components comprises a sensorized wheel hub, a transmission speed sensor, and a controller in communication with the sensorized wheel hub and the transmission speed sensor through a communication bus. A method of utilizing a network of sensorized components to analyze a driveline and a method for monitoring a wear of a sealing gasket of a rotary joint is also provided.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: April 23, 2019
    Assignee: Dana Italia S.R.L.
    Inventors: Giulio Ornella, Alessandro Massei, Carlos Maximiliano Giorgio Bort, Fabrizio Zendri, Donald J. Remboski, Doug D. Turner
  • Patent number: 10227992
    Abstract: A rotor for a turbocharger device has a shaft and, arranged and fixed axially one behind the other on the shaft, an impeller wheel, a sealing bushing element and an axial bearing element which rotates with the shaft. The sealing bushing element and the axial bearing element, by way of an internal thread provided on at least one of the elements, are screwed to a first external thread arranged on the shaft and are braced against a shaft shoulder. Stronger and more rigid fixing of the parts that are pushed onto the shaft, and thus also lower susceptibility to vibration-induced faults during operation, are achieved by way of this construction.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: March 12, 2019
    Assignee: Continental Automotive GmbH
    Inventors: Ralf Boening, Ralph-Maurice Koempel
  • Patent number: 9790960
    Abstract: The present invention relates to centrifugal pumps, and more specifically to a centrifugal pump device with a governor actuated cartridge seal and a method of attaching a centrifugal pump device with a governor actuated cartridge seal. The centrifugal pump comprises a sealing system that prevents undesirable fluid leaking or air ingestion when in operation while allowing ease of installation and maintenance. The governor actuated cartridge seal automatically increases sealing capabilities by urging a movable seal as a function of impeller or engine drive shaft rotational speed. The governors actuate radially so as to present a minimal profile and therefore not introduce a safety hazard. Scalable weights attached to the governors allow predictable calibration and initialization of the pump under varying hydraulic pressures and rotational speeds.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: October 17, 2017
    Assignee: A.R. WILFLEY & SONS, INC.
    Inventor: Jack Postuchow
  • Patent number: 9708922
    Abstract: A seal assembly includes a first component, a second component, a first seal, a first shelf, a second shelf, and a second seal. The second component is adjacent to the first component and forms a cavity between the first and second components. The first seal spans the cavity. The first shelf extends axially from the first component and is located between the first seal and a hot gas path. The second shelf extends axially from the second component and is located between the first shelf and the hot gas path; the second shelf together with the first shelf forms a flow channel. The second seal conforms to the first shelf, sealing the flow channel.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: July 18, 2017
    Assignee: United Technologies Corporation
    Inventors: Timothy M. Davis, Mark J. Rogers, Paul M. Lutjen, Terence P. Tyler, Jr., Michael J. Bruskotter
  • Patent number: 9695941
    Abstract: The present invention relates to a mechanical seal arrangement, comprising a rotating slide ring and a stationary slide ring, which define a sealing gap between them, and a delivery device for delivering a fluid, wherein the delivery device comprises a sleeve-like basic body with first through-openings and second through-openings, wherein the delivery device rotates jointly with the rotating slide ring, wherein the first through-openings each have a first entry region on an outer periphery of the sleeve-like basic body and a first exit region on an inner periphery of the sleeve-like basic body, and wherein the second through-openings each have a second entry region on the inner periphery of the sleeve-like basic body and a second exit region on the outer periphery of the sleeve-like basic body.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: July 4, 2017
    Assignee: EagleBurgmann Germany GmbH & Co. KG
    Inventors: Joseph Fichtner, Stefan Ledig, Joachim Skrzidlo, Rudolf Kollinger, Thomas Bohm, Daniel Frohlich
  • Patent number: 9574667
    Abstract: A mechanical seal device 1 comprises a seal case 30 attached to the device main body, a rotary seal ring 60 attached to the rotary shaft 100, a stationary seal ring 50 arranged in an axial direction opposing to the rotary seal ring 60, and a bellows 40 attached extendably in the axial direction between the stationary seal ring 50 and the seal case 30. A static pressure fluid supplying hole 56, supplying a static pressure fluid to a static pressure fluid chamber C arranged at an inner circumferential side of the bellows, is formed on the seal case 30. A communication hole, guiding the static pressure fluid of the static pressure fluid chamber C to sealing surfaces between the stationary seal ring 50 and the rotary seal ring 60 is formed on the stationary seal ring 50. The sealed fluid is arranged at an outer circumferential side of the bellows 40.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: February 21, 2017
    Assignees: EAGLE BURGMANN JAPAN CO., LTD., EAGLE INDUSTRY CO., LTD.
    Inventors: Hidekazu Takahashi, Ryoji Muraki
  • Patent number: 9382877
    Abstract: A turbocharger for an internal combustion engine includes a bearing housing and a rotating assembly arranged therein. The rotating assembly includes a shaft with a turbine wheel and a compressor wheel. The turbocharger also includes a thrust bearing assembly operatively connected to the shaft, lubricated by pressurized oil from the engine, and configured to transmit thrust forces developed by the turbine wheel to the bearing housing. The thrust bearing assembly includes a thrust plate having a first thrust face and a thrust washer having a second thrust face. An oil film is generated between the first and second thrust faces, and the first and second thrust faces rotate relative to each other and transmit the thrust forces to the bearing housing. The thrust plate and/or the thrust washer include a circumferential groove configured to trap oil-borne debris and minimize an amount of the debris in the oil film.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: July 5, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Louis P. Begin, Ran Wu, Dingfeng Deng
  • Patent number: 9212564
    Abstract: A turbomachine compressor or turbine including annular anti-wear shims mounted against hooks of a stator, each shim being substantially of channel-section defining an annular groove for engaging on a hook, the shim mounted against the downstream hook bearing axially via its middle annular wall on the stator, or on the casing, and one of its side walls includes a bearing device at its end remote from the middle annular wall for bearing against the casing or the stator, respectively, which bearing device is elastically deformable in an axial direction so as to urge the stator upstream.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: December 15, 2015
    Assignee: SNECMA
    Inventors: Arnaud Langlois, Kamel Benderradji, Alain Marc Lucien Bromann, Vincent Roy
  • Publication number: 20150130137
    Abstract: A self-cleaning hydrodynamic face seal for use with a rotary machine is provided. The hydrodynamic face seal includes a seal ring having a radially-extending seal face. In addition, the hydrodynamic face seal includes at least one brush coupled to the seal ring. The at least one brush includes a plurality of flexible elements extending away from the radially-extending seal face of the face seal ring.
    Type: Application
    Filed: November 11, 2013
    Publication date: May 14, 2015
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Shaik Karimulla Sha, Xiaoqing Zheng, Azam Mihir Thatte
  • Publication number: 20150050175
    Abstract: A scroll compressor and a sealing method and sealing arrangement for a mid-pressure chamber thereof are provided. The scroll compressor includes: a scroll compressor shell; a housing, mounted inside the scroll compressor shell; a fixed scroll, fixed onto the housing; an orbiting scroll, supported on the housing and cooperating with the fixed scroll; a driving mechanism, located between the orbiting scroll and the housing and connected to the orbiting scroll to drive the orbiting scroll to orbit; and a mid-pressure chamber, which is a cavity surrounded by a hub of the orbiting scroll and a part of the housing and which is sealed by two sealing members.
    Type: Application
    Filed: August 13, 2014
    Publication date: February 19, 2015
    Inventors: Zili Sun, Zhigang Huang, Qing Miao
  • Publication number: 20150035232
    Abstract: An adjustment mechanism (85) for a seal assembly (80) for a pump drive shaft (52) of a pump, the pump shaft (52) mounted for rotation about a rotation axis. The seal assembly (80) comprises a rotating seal (81) mounted for rotation with the drive shaft (52) about the rotation axis and a static seal (84) adjacent the rotating seal (81) and axially moveable relative thereto. The adjustment mechanism (85) comprises an adjustment member (87) which is axially moveable so as to cause axial movement of the static seal (84) relative to the rotating seal (81). The mechanism further includes an actuator (88) and a transmission (93) for transmitting a motive force from the actuator to the adjustment member as a result of activation of the actuator. The transmission (93) is operatively connected to the adjustment member (87) at two spaced apart couplings (98) whereby activation of the actuator causes simultaneous transmission of the motive force to the two spaced apart couplings.
    Type: Application
    Filed: October 18, 2010
    Publication date: February 5, 2015
    Inventor: Gregory Craig Dewsnap
  • Publication number: 20150028662
    Abstract: A wheel assembly includes a spindle; a wheel hub rotatable relative to the spindle; a seal mounted between the spindle and the wheel hub, the spindle, the wheel hub, and the seal defining a sealed cavity; and at least one bearing mounted between the spindle and the wheel hub within the sealed cavity, the at least one bearing facilitating rotation of the wheel hub relative to the spindle.
    Type: Application
    Filed: July 26, 2013
    Publication date: January 29, 2015
    Applicant: Crown Parts and Machines Inc.
    Inventors: Lane R. Gobbs, Derek L. Hansen, Kenneth P. Pitman
  • Publication number: 20150001804
    Abstract: A fluid seal assembly (the assembly) of the present invention is disposed between an outer surface, i.e. engine block or any other part that requires application of the assembly and a rotatable member, such as, for example a shaft, wherein the assembly circumscribes the shaft and lubricated the shaft and the same rotates around the axis. The assembly includes a casing unit, a sealing ring unit, and an intermediate member. The intermediate member is positioned on the shaft and frictionally engaged a seal of the sealing ring unit in order to eliminate frictional engagement between the shaft and the seal.
    Type: Application
    Filed: June 27, 2013
    Publication date: January 1, 2015
    Applicant: AKTIEBOLAGET SKF
    Inventor: Yefim Epshetsky
  • Publication number: 20140369832
    Abstract: A contact seal assembly for a shaft of a gas turbine engine includes a seal runner adapted to be connected to the shaft and rotatable relative to a carbon ring. The seal runner includes concentric inner and outer annular portions radially spaced apart to define at least one internal fluid passage between the inner and outer annular portions of the seal runner.
    Type: Application
    Filed: June 13, 2013
    Publication date: December 18, 2014
    Inventors: Daniel BLAIS, Alain Lewis, Alain C. Martel
  • Publication number: 20140361490
    Abstract: A shaft sealing assembly for static and dynamic sealing includes a stator member attached to a housing and a rotor member attached to a shaft rotatable about an axis. The rotor member includes first and second pocket sections extending from upper and lower radial flanges extending in a cantilevered fashion from a tubular member. At least one static sealing member is attached to and encapsulates each pocket section. Each static sealing member presents a core portion and a pair of radial lips extending from the core portion. The stator member presents an annular wall extending to inner walls inclined conically to a central radial rim or flange separating two pocket portions and the static sealing members presenting a contact and frictionally engaging with the central radial rim as the rotor member is at a stand-still or static position.
    Type: Application
    Filed: December 14, 2012
    Publication date: December 11, 2014
    Applicant: AKTIEBOLAGET SKF
    Inventors: Sven Anders J├Ânsson, Yefim Epshetsky, Bryan Uncapher
  • Publication number: 20140346736
    Abstract: A device is for supporting within a coating chamber a mechanical seal face (8) having an annular sealing surface. The device includes a frame (1) housing first support means (9) for supporting the seal face when the device is in a first orientation with the annular sealing surface resting on a surface of said first support means.
    Type: Application
    Filed: February 8, 2013
    Publication date: November 27, 2014
    Inventor: Christopher Iveson
  • Patent number: 8888104
    Abstract: An intershaft seal system capable of communicating a balanced pressure profile onto forward and aft faces along a piston ring is presented. The seal system includes forward and aft mating rings and a piston ring. Mating rings include a plurality of divergent flow grooves adjacent to the piston ring. Each divergent flow groove includes a pair of grooves which intersect at and are substantially symmetric about an apex. The piston ring includes channels which direct a fluid from a high pressure region upward or downward and through the piston ring and onto the divergent flow grooves. The divergent flow grooves separate the fluid in a symmetrically divergent fashion prior to communication onto the piston ring. The divergent flow grooves communicate a substantially symmetric pressure force onto each side of the piston ring so as to minimize twist thereof, thus reducing wear along the piston ring and increasing seal life.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: November 18, 2014
    Assignee: Stein Seal Company
    Inventor: Glenn M. Garrison
  • Publication number: 20140327211
    Abstract: Seals having incorporated heat pipes are disclosed relating to pumps and other comparable sealing equipment that may include a seal face, a cavity, a wicking material within the cavity, and a working fluid within the cavity. The seals may be used as a pump seal rings and in other applications having comparable heat transfer requirements.
    Type: Application
    Filed: May 6, 2013
    Publication date: November 6, 2014
    Applicant: Board of Supervisors of Louisiana State University and Agricultural and Mechanical College
    Inventors: Michael M. Khonsari, Nian Xiao
  • Patent number: 8857818
    Abstract: A seal assembly having a first seal ring sealed to a rotatable component and a second seal ring sealed to another rotatable component, and the second ring is urged towards the first ring such that sealing faces of the seal rings engage. A process chamber is formed inside the seal rings and opens to an outside the seal rings, and a barrier chamber outside of the seal rings opens to inside the seal rings. A shroud shields the external surface of the seal rings from process fluid in the process chamber such that heat transfer from the process fluid to the seal rings occurs at outer regions of the seal rings adjacent the sealing faces, and a sleeve is secured inside the seal rings such that heat transfer between the seal rings and barrier fluid in the barrier chamber occurs at radially extending surfaces of the seal rings adjacent the sealing faces.
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: October 14, 2014
    Assignee: John Crane UK Limited
    Inventors: Nicholas Derek Quarmby, Bhikhubhai Chhanabhai Patel
  • Publication number: 20140291936
    Abstract: The present invention provides a rotary seal assembly for providing sealing on a rotating shaft or other suitable device. The seal assembly seals against a rotating shaft or other piece of moving equipment to prevent the leakage of fluids. In some embodiments, a split rotary seal assembly employing an energizer, housing, and a rotational seal element such as a matrix is provided. The energizer energizes the matrix to enhance the sealing properties of the assembly. Furthermore, the matrix conforms to the surface of the shaft, and moves radially with the shaft to provide an effective seal in high wear or runout applications.
    Type: Application
    Filed: March 29, 2013
    Publication date: October 2, 2014
    Applicant: A.W. CHESTERTON COMPANY
    Inventors: Michael P. GRIMANIS, Joseph K. KALESHIAN, Thomas RICHARD
  • Patent number: 8826560
    Abstract: A support apparatus and method is disclosed for supporting a syphon within a rotating cylinder. The apparatus includes a hub which is disposed within the rotating cylinder. The hub has a first and a second end, the hub defining a bore which extends between the ends of the hub for rotatably supporting the syphon. A first, second and third arm extend from the hub, each of the arms extending radially outwardly from the hub. Each of the arms has an inner and an outer extremity. The inner extremities of the arms are disposed adjacent to the hub. Also, the outer extremities of the arms are disposed adjacent to an internal surface of the rotating cylinder such that the arms and the hub support the syphon within the rotating cylinder while permitting rotation of the rotating cylinder relative to the syphon.
    Type: Grant
    Filed: September 1, 2006
    Date of Patent: September 9, 2014
    Assignee: Kadant Inc.
    Inventors: Matthew H. Beach, Alan T Ives
  • Patent number: 8821141
    Abstract: Various rotary pumps are disclosed that are designed to pump viscous fluids or slurries. Often, the seals of such pumps can become over heated. The disclosed pumps include slots disposed in the rotors and/or slots disposed in the openings through which the drive and driven shafts task so that some of the fluid being pumped through the pumping chamber can migrate through the proximal wall of the pump casing to the seal assemblies disposed on the other side of the proximal wall of the pump casing. Thus, the seal assemblies of the pumps are cooled without resorting to the use of a cooling jacket or other cooling mechanism.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: September 2, 2014
    Assignee: Wright Flow Technologies Limited
    Inventors: Bruce Helgeson, Joe Thompson, Jim Mayer, Chris Mihm, Keith Feeley, Juan Jose Mejia
  • Publication number: 20140175747
    Abstract: The present invention relates to a mechanical seal assembly, comprising: a rotating seal ring (2) and a stationary seal ring (3), which define a sealing gap (4) thereinbetween, a shaft bush (6), on which the rotating seal ring (2) is arranged, a carrier ring (5), which is arranged on the shaft bush (6) and at least partly covers the rotating seal ring (2) on the outer circumference thereof, a first O-ring (8) and a second O-ring (9), which are arranged between the rotating seal ring (2) and the carrier ring (5) and define an interspace (15) on the outer circumference of the rotating seal ring (2) between the carrier ring (5) and the rotating seal ring (2), and at least one connecting opening (11), which connects the interspace (15) to an outer circumferential surface of the carrier ring (5).
    Type: Application
    Filed: August 2, 2012
    Publication date: June 26, 2014
    Applicant: EAGLEBURGMANN GERMANY GMBH & CO. KG
    Inventors: Joseph Portenlanger, Michael Dorig
  • Publication number: 20140167359
    Abstract: A split mechanical end face seal assembly has a split gland plate assembly, a split mating seal ring assembly, a split primary seal ring assembly and a split biasing assembly. The segmented mating seal ring is axially and radially supported on the segmented mating ring adapter by resilient connector strips as pre-assembled sub-assemblies and the resilient connector strips axially non-rigidly support the mating seal ring within said mating ring adapter assembly. An axially movable primary sealing ring assembly includes a segmented primary seal ring. The biasing assembly is pre-assembled into the gland plate assembly and urges the primary seal ring into sealing relation with the mating seal seal ring. A method of installation includes resilient axial and radial support of the mating seal ring segments in mating ring adapter segments by the resilient connector strip for installation as a pre-assembled sub-assembly.
    Type: Application
    Filed: February 13, 2014
    Publication date: June 19, 2014
    Inventor: David M. Dudek
  • Publication number: 20140140824
    Abstract: A gas turbine engine with a geared architecture includes a multiple of bearing compartments and at least one carbon seal that seals at least one side of each of the multiple of bearing compartments.
    Type: Application
    Filed: December 5, 2012
    Publication date: May 22, 2014
    Applicant: United Technologies Corporation
    Inventor: United Technologies Corporation
  • Publication number: 20140131952
    Abstract: An adjustable dynamic face seal assembly for an EWGU is provided. The adjustable dynamic face seal assembly includes a first seal ring having a first seal face and a second seal ring have a second seal face. The first seal ring is mounted in a first seal ring retainer, and the second seal ring is mounted in a second seal ring retainer. The adjustable dynamic face seal assembly also includes a first flexible seal element supported by the first seal ring and retained by the first seal ring retainer, and a second flexible seal element supported by the second seal ring and retained in the second seal ring retainer. Adjustment members are selectively insertable to provide a static seal at the sealing interface.
    Type: Application
    Filed: November 15, 2012
    Publication date: May 15, 2014
    Applicant: Caterpillar Global Mining LLC
    Inventors: Vanyo Nikolov Kirov, Nicholas Dame
  • Patent number: 8720898
    Abstract: A corner seal assembly for a rotor of a rotary engine, the assembly comprising a pair of corner seal elements, each seal element of the pair being arranged to provide a seal between the rotor and a respective one of a pair of opposed end faces of the rotary engine, the seals being arranged to be resiliently coupled to one another whereby the seals exert substantially the same force on each one of the pair of opposed end faces.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: May 13, 2014
    Assignee: IP Consortium Limited
    Inventor: Timothy Shires
  • Publication number: 20140069100
    Abstract: A disclosed intershaft seal assembly for a gas turbine engine includes a support fixed to a static structure. A first seal housing is supported radially outboard of the support for holding a first seal. A second seal housing is supported radially inboard of the support and supports a second seal. A first biasing member is provided between the support and the first seal housing that biases the first seal housing in a first direction away from the support. A second biasing member between the support and the second seal housing biases the second seal housing in a second direction away from the support.
    Type: Application
    Filed: September 11, 2012
    Publication date: March 13, 2014
    Inventor: Christopher J. Larson
  • Patent number: 8651494
    Abstract: A split mechanical end face seal assembly has a split gland plate assembly, a split mating seal ring assembly, a split primary seal ring assembly and a split biasing assembly. The segmented mating seal ring is axially and radially supported on the segmented mating ring adapter by resilient connector strips as pre-assembled sub-assemblies and the resilient connector strips axially non-rigidly support the mating seal ring within said mating ring adapter assembly. An axially movable primary sealing ring assembly includes a segmented primary seal ring. The biasing assembly is pre-assembled into the gland plate assembly and urges the primary seal ring into sealing relation with the mating seal ring. A method of installation includes resilient axial and radial support of the mating seal ring segments in mating ring adapter segments by the resilient connector strip for installation as a pre-assembled sub-assembly.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: February 18, 2014
    Assignee: John Crane Inc.
    Inventor: David M. Dudek
  • Publication number: 20140015200
    Abstract: An inter stage seal housing for a turbine engine having upper and lower half inter stage seal housings in which a contact sealing surface of the seal housing is restored after an interval of engine operation. The contact sealing surface is restored by fitting a replaceable wear strip on the downstream sealing surface of the seal housing. In order to fit the replaceable wear strip, a circumferential groove is machined along an outer peripheral edge of the seal housing. The groove is machined to include axial location and radial retention such that the wear strips can be slid into the upper half and lower half inter stage seal housing circumferentially from the horizontal joint. The groove includes through holes and the wear strips include corresponding threaded holes such that the wear strips can be fastened in the groove by fasteners and fastener retention hardware.
    Type: Application
    Filed: September 16, 2013
    Publication date: January 16, 2014
    Applicant: MITSUBISHI POWER SYSTEMS AMERICAS, INC.
    Inventors: Santo F. Scimeca, Chad Garner
  • Publication number: 20130142628
    Abstract: A sealing system for a centrifugal compressor includes a stator having a seal, a seal disposed in the seal housing and having an abradable portion along an inner circumference, a rotor having a plurality of rotor teeth configured to rotate within the inner circumference of the seal and configured to create rub grooves within the abradable portion, and a first spring disposed between the stator and the seal and configured to facilitate axial movement of the seal relative to the seal housing.
    Type: Application
    Filed: December 7, 2010
    Publication date: June 6, 2013
    Inventors: Nuo Sheng, Roderick Mark Lusted, Vittorio Michelassi
  • Patent number: 8408555
    Abstract: An intershaft seal system capable of communicating a balanced pressure profile onto forward and aft faces along a piston ring is presented. Seal system includes forward and aft mating rings and a piston ring. Mating rings include a plurality of divergent flow grooves adjacent to the piston ring. Each divergent flow groove includes a pair of grooves which intersect at and are substantially symmetric about an apex. The piston ring includes channels which direct a fluid from a high pressure region upward, downward, or directly through the piston ring and onto the divergent flow grooves. The divergent flow grooves separate the fluid in a symmetrically divergent fashion prior to communication onto the piston ring. The divergent flow grooves communicate a substantially symmetric pressure force along the radial width of the piston ring so as to minimize twisting thereof, thus reducing wear along the piston ring and increasing seal life.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: April 2, 2013
    Assignee: Stein Seal Company
    Inventor: Glenn M. Garrison
  • Publication number: 20130075973
    Abstract: A rolling mill roll neck is sealed by interposing a seal between a roll flinger having a first axial surface and an opposing second axial surface of a roll housing retaining plate. The seal is biased into contact against one of the axial surfaces with a pressurized fluid source, such as compressed air. As the seal wears during roll neck operation the pressurized fluid maintains biasing contact between the seal and the axial surface. The remainder of the intact seal is remains pressed into contact with the mating, opposing axial surface, for example that of a roll flinger or a retaining plate. Advantageously the seal is housed in a stationary retaining plate that is in opposed axial relationship with a rotating flinger.
    Type: Application
    Filed: September 4, 2012
    Publication date: March 28, 2013
    Applicant: Siemens Industry, Inc.
    Inventor: Raymond P. Dauphinais
  • Publication number: 20130075976
    Abstract: A axial face seal assembly includes first and second structures rotatable relative to one another about an axis. A carrier supports a seal that engages the second structure. The carrier is configured to move along the axis. First and second springs operatively are arranged between the first structure and the carrier. The first and second springs are configured to bias the carrier relative to the second structure respectively in first and second directions along the axis for providing a desired closing force on the second structure. A method of sealing a rotating structure includes biasing a seal toward a rotating sealing surface with a first spring to provide a desired axial closing force. The axial position of the seal relative to the rotating sealing surface is changed to an undesired axial closing force. The seal is biased with a second spring to achieve the desired axial closing force.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 28, 2013
    Inventors: Todd A. Davis, Douglas J. Howe
  • Publication number: 20130062832
    Abstract: Disclosed is a slide ring seal, which is used, for example, for sealing a shaft space of a centrifugal pump in relation to a pumping space thereof and to centering the mechanical seal and/or fastening the seal to the casing of the centrifugal pump and a body part used for the attachment. A feature of the disclosed seal, including at least one rotary slide ring unit, a body part by means of which the seal is attached to the casing, and at least one either separate counter ring unit or a counter ring unit stationarily attached to the body part, is that the body part is provided with inclined fastening means by means of which the body part (40, 40?) is tightened to the casing both axially and radially.
    Type: Application
    Filed: August 14, 2012
    Publication date: March 14, 2013
    Applicant: Sulzer Pumpen AG
    Inventor: Heikki Manninen
  • Publication number: 20130028776
    Abstract: In one aspect, described is a rotor for a rotary internal combustion engine where a first face seal biased axially outwardly away from the first end face has opposed curled ends abutting a first seal element of a respective one of the adjacent apex seal assemblies, and a second face seal biased axially outwardly away from the second end face has opposed curled ends abutting a second seal element of a respective one of the adjacent apex seal assemblies.
    Type: Application
    Filed: October 14, 2011
    Publication date: January 31, 2013
    Inventors: Eugene Gekht, Jean Thomassin, Sebastien Bolduc, David Gagnon-Martin
  • Publication number: 20130028773
    Abstract: A rotor of a rotary internal combustion engine including apex springs each being formed of a continuous band including first and second opposed end sections each contacting the inner surface of the apex seal adjacent to a respective one of the end faces, a respective intermediate section extending radially inwardly from each end section and contacting the outer surface of the groove along a respective contact zone, and a central section extending axially between the intermediate sections and having a portion extending radially outwardly from each of the intermediate sections, the central section extending out of contact with both the outer surface of the groove and the apex seal.
    Type: Application
    Filed: October 13, 2011
    Publication date: January 31, 2013
    Inventors: Eugene GEKHT, Mike Fontaine
  • Publication number: 20120200043
    Abstract: A seal body for use with a torque tube includes a first portion having an attachment mechanism to releasably secure a torque tube to the first portion, and a second portion configured adjacent to the first portion. The second portion of the seal body includes a substantially uniplanar sealing surface that is orthogonal to an axis of rotation of the torque tube, and that extends across a substantially uniplanar axial end face of the torque tube.
    Type: Application
    Filed: February 8, 2011
    Publication date: August 9, 2012
    Inventors: Bryan A. Witcher, Carlos A. Vallejo
  • Publication number: 20120068413
    Abstract: A sealing arrangement comprising first and second machine elements which can turn relative to one another and delimit an installation space to be sealed for a sealing ring. The sealing ring has at least one static sealing area, which is connected, in a form-locking manner, by an anchoring bead, with a congruently shaped first indentation in the first machine element. The sealing ring has at least one dynamic sealing area with at least one first sealing lip that touches a first undercut of the second machine element with a sealing effect. The dynamic sealing area has at least one second sealing lip, which is connected with the first sealing lip by a connecting piece.
    Type: Application
    Filed: September 7, 2011
    Publication date: March 22, 2012
    Applicant: CARL FREUDENBERG KG
    Inventors: Georg PUTT, Matthias MESSER, Katrin KLEIN
  • Publication number: 20120043724
    Abstract: An inter stage seal housing for a turbine engine having upper and lower half inter stage seal housings in which a contact sealing surface of the seal housing is restored after an interval of engine operation. The contact sealing surface is restored by fitting a replaceable wear strip on the downstream sealing surface of the seal housing. In order to fit the replaceable wear strip, a circumferential groove is machined along an outer peripheral edge of the seal housing. The groove is machined to include axial location and radial retention such that the wear strips can be slid into the upper half and lower half inter stage seal housing circumferentially from the horizontal joint. The groove includes through holes and the wear strips include corresponding threaded holes such that the wear strips can be fastened in the groove by fasteners and fastener retention hardware.
    Type: Application
    Filed: August 20, 2010
    Publication date: February 23, 2012
    Applicant: MITSUBISHI POWER SYSTEMS, INC.
    Inventors: Santo F. Scimeca, Chad Garner
  • Publication number: 20120043725
    Abstract: An intershaft seal for inner and outer coaxial shafts which rotate relative to each other. The seal is located in an annular space between the shafts and maintains an axial pressure differential between a fluid pressure on the first side of the seal and a fluid pressure on the other, second side of the seal. The seal comprises a sealing ring which is coaxial with the shafts and which forms a sealing contact with the outer shaft to maintain the pressure differential.
    Type: Application
    Filed: July 22, 2011
    Publication date: February 23, 2012
    Applicant: ROLLS-ROYCE PLC
    Inventors: INGO H. J. JAHN, Gavin M. ROWNTREE
  • Patent number: 8082680
    Abstract: A shoe device secured to a syphon is disclosed for removing condensate from an internal surface of a rotating cylinder. The shoe device includes a shoe portion which is disposed adjacent to the internal surface of the rotating cylinder. The shoe portion defines a passageway having an upstream and a downstream end. The passageway permits a flow there through of the condensate from the internal surface of the rotating cylinder, through the upstream end of the passageway to the downstream end of the passageway. The shoe portion has a first and a second side, a surface extending between the first and second sides of the shoe portion. The surface is disposed adjacent to the internal surface of the cylinder. The shoe portion also has a leading and a trailing end and a face extending between the leading and trailing ends of the shoe portion. A clamp is secured to a distal end of the syphon and is connected to the shoe portion for clamping the shoe portion to the syphon.
    Type: Grant
    Filed: April 28, 2008
    Date of Patent: December 27, 2011
    Assignee: Kadant Inc.
    Inventors: Alan T Ives, Gregory L. Wedel
  • Publication number: 20110285089
    Abstract: A fluid seal assembly (the assembly) of the present invention is disposed between an outer surface, i.e. engine block or any other part that requires application of the assembly and a rotatable member, such as, for example a shaft, wherein the assembly circumscribes the shaft and lubricated the shaft and the same rotates around the axis. The assembly includes at least three members: a casing unit, a sealing ring unit, and a collar. The assembly eliminates problems associated with prior art designs such as static leakage of oil, clogging up the spirals with carbonized oil that negatively impact lifecycle of the fluid seals.
    Type: Application
    Filed: May 18, 2010
    Publication date: November 24, 2011
    Inventors: Yefim Epshetsky, Alex Paykin
  • Publication number: 20110278798
    Abstract: A temperature responsive control system, the system including a first seal, a second seal abutting the first seal, and a thermally reactive element in contact with the first seal and/or the second seal wherein the thermally reactive element constricts to displace at least one of said first and second seals, for reducing a degree of contact pressure between the first and second seals from a first, higher level of contact pressure to a second, lower level of contact pressure, when a temperature of the first seal and/or the second seal increases to a level to activate the thermally reactive element to constrict. A water pump seal pressure system with abutting seals and a method for managing the contact between abutting seals in a system are also disclosed.
    Type: Application
    Filed: May 17, 2010
    Publication date: November 17, 2011
    Inventor: Nicholas Gregory Zupp
  • Publication number: 20110221136
    Abstract: A split mechanical end face seal assembly has a split gland plate assembly, a split mating seal ring assembly, a split primary seal ring assembly and a split biasing assembly. The segmented mating seal ring is axially and radially supported on the segmented mating ring adapter by resilient connector strips as pre-assembled sub-assemblies and the resilient connector strips axially non-rigidly support the mating seal ring within said mating ring adapter assembly. An axially movable primary sealing ring assembly includes a segmented primary seal ring. The biasing assembly is pre-assembled into the gland plate assembly and urges the primary seal ring into sealing relation with the mating seal ring. A method of installation includes resilient axial and radial support of the mating seal ring segments in mating ring adapter segments by the resilient connector strip for installation as a pre-assembled sub-assembly.
    Type: Application
    Filed: March 14, 2011
    Publication date: September 15, 2011
    Applicant: John Crane Inc.
    Inventor: David M. Dudek
  • Publication number: 20110210514
    Abstract: The present invention relates to circumferential seal ring segments positioned around a rotating shaft so as to prevent fluids from leaking from a lubricant sump during both low and high pressure conditions. The circumferential seal is comprised of a plurality of adjoining annular ring segments facing the rotating shaft. Each sealing ring segment includes a dead end circumferential groove on a shaft-side face of each sealing ring such that, when the segments are joined, the circumferential dead end groove of each segment extends arcuately in the direction of shaft rotation. At least one additional groove is contained on the shaft-side face of each sealing ring segment. Each additional groove is an axial bore groove extending perpendicularly to a longitudinal axis of the seal ring segment in fluid communication with the dead end circumferential groove so as to direct fluid flow generated from a rotating shaft into the dead end circumferential groove.
    Type: Application
    Filed: May 11, 2011
    Publication date: September 1, 2011
    Applicant: Stein Seal Company
    Inventors: Thurai Manik Vasagar, Alan D. McNickle, Diane R. McNickle, Glenn M. Garrison
  • Patent number: 8006982
    Abstract: A high temperature dynamic seal and methods of assembly and use. The dynamic seal is provided as a rotating seal, which includes a stationary ring and rotating ring assembly, with a seal ring that is positioned between the stationary ring member and the rotating ring assembly. One or more high temperature seals create a seal between the stationary ring member and a device in which the dynamic seal is used. Similarly one or more high temperature seals create a seal between the rotating ring assembly and a rotating shaft of the device. One or more of the high temperature seals are formed from a metallic material with various cross-sectional shapes.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: August 30, 2011
    Inventors: Mark S. Whitlow, Jeff Noll, Kevin Lamb, Jeffrey D. Farris, Fernando Lopez, Paul Richard Ryan, Roger Sanderson, Mark Vincent Chester, Robert Vincent McGovern