Formed By Flexible Projection Patents (Class 277/307)
  • Patent number: 9915349
    Abstract: The invention relates to a seal system comprising a stationary assembly having an angled profile, and a rotary assembly comprising a resiliently flexible rotary elastomeric member. When in a rest position, the rotary elastomeric member contacts the angled profile of the stationary assembly to seal a gap therebetween. On rotation of the rotary elastomeric member, the gap between the assemblies is opened to allow fluid flow therethrough.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: March 13, 2018
    Inventor: Thomas Broadbent
  • Patent number: 9285034
    Abstract: The present cartridge seal assemblies pertain to rotary lip-type seals. In certain embodiments, a sealing member is constructed of a relatively hard material that increases the lifespan of the sealing member. The sealing member is energized with a canted-coil spring, which in some embodiments includes an adjustable spring force. The present embodiments enable control of sealing force to achieve an appropriate sealing force between the sealing member and the shaft based on factors such as temperature, pressure, rotary speed, properties of fluid media, etc. to achieve longer seal life.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: March 15, 2016
    Assignee: Bal Seal Engineering, Inc.
    Inventors: Pete Balsells, Farshid Dilmaghanian, Derek Changsrivong
  • Publication number: 20150145215
    Abstract: A cartridge seal assembly can be sued for sealing an annular space between a rotating shaft and an opening in a housing of an appliance. The cartridge seal assembly includes a wear sleeve and an elastomeric seal. The wear sleeve includes a cylindrical wall sized to fit the rotary shaft and an radially outwardly extending flange, the flange comprising a peripheral edge. The elastomeric seal includes a primary seal configured to form a static seal against the cylindrical wall of the wear sleeve, an outer body configured to engage a surface of the housing defining the opening, and a retaining feature configured to engage the peripheral edge of the wear sleeve. The wear sleeve is preassembled with the elastomeric seal.
    Type: Application
    Filed: November 22, 2013
    Publication date: May 28, 2015
    Applicant: Trostel, Ltd.
    Inventors: Paul J. Stoeck, Terry R. Wangsness
  • Publication number: 20150130138
    Abstract: An aspirating face seal for use with a rotary machine includes a rotating seal ring including a radially outer surface that includes an oblique portion. A stationary seal ring is coupled proximate the rotating seal ring such that a first gap is defined therebetween. The stationary seal ring is movable along a centerline axis of the rotary machine between an open position and a sealed position, and includes an extension member that extends across the first gap. An auxiliary seal includes at least one seal tooth that includes a seal tooth tip. The at least one seal tooth extends radially inward from the extension member such that a second gap is defined between the seal tooth tip and the oblique portion.
    Type: Application
    Filed: November 11, 2013
    Publication date: May 14, 2015
    Applicant: General Electric Company
    Inventors: Xiaoqing Zheng, Norman Arnold Turnquist, Michael Dennis Mack, Rahul Anil Bidkar, Azam Mihir Thatte
  • Patent number: 8955943
    Abstract: A seal member includes a communication hole that makes a holder flow path communicate with a connection flow path in a state of the seal member being nipped between a holder projection and a connection projection, a holder-side fitting recess that fits onto the outer circumferential surface of the holder projection and also fits to a leading end portion of the holder projection, a connection member-side fitting recess that fits onto the outer circumferential surface of the connection projection and also fits to a leading end portion of the connection projection, and a recessed groove that is hollowed in the bottom of the holder-side fitting recess or the bottom of the connection member-side fitting recess along the inner circumferential surface of the holder-side fitting recess or the connection member-side fitting recess.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: February 17, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Shunsuke Watanabe
  • Publication number: 20150008645
    Abstract: A seal assembly for sealing a space between a housing and a rotary shaft includes a generally annular sealing member having a central axis and inner and outer circumferential surfaces extending about the axis, at least a portion of the inner surface providing a sealing surface engageable with the shaft outer surface so as to define a seal interface with opposing axial ends. The sealing surface is configured to direct substances entering the interface toward at least one of the axial ends. Further, an annular biasing member is disposed about the sealing member outer surface and configured to exert a radially-inwardly directed force on the sealing member so as to generate contact pressure within the seal interface. The biasing member is arranged on the sealing member such that at least a portion of the biasing member extends axially in general alignment with at least a portion of the sealing surface.
    Type: Application
    Filed: December 14, 2012
    Publication date: January 8, 2015
    Applicant: AKTIEBOLAGET SKF
    Inventors: Yefim Epshetsky, Alex Paykin
  • 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 Jönsson, Yefim Epshetsky, Bryan Uncapher
  • 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: 20140197599
    Abstract: A sealing arrangement includes a double seal for sealing two chambers which are to be sealed off from one another and are each filled with a medium to be sealed. The double seal includes a first sealing ring disposed on a first side of the double seal and a second sealing ring disposed on a second side of the double seal. Each of the sealing rings has at least one dynamically stressed sealing lip contacting a surface to be sealed of a first machine element in a sealing manner. The sealing lips are arranged such that there is an axial distance between the sealing lips of the first and second sealing rings that are axially closest to one another. The first machine element is movable backwards and forwards in a translatory manner with a stroke. The axial distance is greater than the stroke.
    Type: Application
    Filed: January 14, 2014
    Publication date: July 17, 2014
    Inventors: Olaf Nahrwold, Thomas Jaeck, Markus Clemens, Ernst Jakob
  • Publication number: 20130283774
    Abstract: A seal assembly includes a seal carrier configured to be coupled to and rotate with a shaft. The seal carrier defines at least three annular recesses configured to receive annular seals. The seal assembly further includes at least three annular seals configured to provide a seal between the seal carrier and a non-rotating housing defining an inner surface having a circular cross-section. One of the at least three seals is received in each of the at least three annular recesses, and one of the at least three seals has a smaller cross-sectional area than a cross-sectional area of at least one of the other seals.
    Type: Application
    Filed: April 30, 2012
    Publication date: October 31, 2013
    Inventors: Jason R. Walker, Cody A. McIntyre, William M. McClure
  • Publication number: 20130200569
    Abstract: A leaf seal effects a seal between two, coaxial, relatively rotating components. The leaf seal has an annular pack of stacked leaves or a plurality of axially arranged annular packs of stacked leaves. The or each pack is mountable to one of the components with its leaves extending towards the other component such that the leaf edges of the pack are presented for wiping contact with the other component. The leaf seal further has upstream and downstream coverplates at the respective axial ends of the seal. Each coverplate is spaced from the adjacent annular pack by a respective axial gap. When viewed in the axial direction, each coverplate covers at least a portion of the radial extent of the adjacent pack. The upstream and/or the downstream coverplate is flexible to axially deflect under differential pressures which the seal experiences in operation.
    Type: Application
    Filed: January 31, 2013
    Publication date: August 8, 2013
    Applicant: ROLLS-ROYCE PLC
    Inventor: ROLLS-ROYCE PLC
  • Publication number: 20130156462
    Abstract: A skiving seal for blocking toner from entering a gap between adjacent a rotatable member in a toner container system of an image forming apparatus. The skiving seal includes a flexible sheet having a surface and a length. The skiving seal includes a tubular portion formed by folding the flexible sheet over itself from an edge extending along the length of the flexible sheet without creasing the fold and adhesively adhering a portion of the folded portion of the flexible sheet to the surface of the flexible sheet along the length of the flexible sheet. The skiving seal includes an adhesive-coated area unobstructed on the surface of the flexible sheet for adhesively affixing the skiving seal in the toner container system.
    Type: Application
    Filed: December 28, 2012
    Publication date: June 20, 2013
    Applicant: LEXMARK INTERNATIONAL, INC.
    Inventor: Lexmark International, Inc.
  • Publication number: 20110084454
    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: Application
    Filed: March 23, 2009
    Publication date: April 14, 2011
    Applicant: JOHN CRANE UK LIMITED
    Inventors: Nicholas Derek Quarmby, Bhikhubhai Chhanabhai Patel
  • Patent number: 7833104
    Abstract: A universal joint bush for a universal joint of a universal joint shaft. In order to seal an annular gap, which is produced between the journal and the universal joint bush, a sealing ring is provided which encloses radially outwardly directed sealing lips. During assembly of the universal joint bush on the journal, the sealing lips, which are connected directly or indirectly to a radially inwardly directed rim of the universal joint bush, make a venting means possible, through which the air which is enclosed in the inner space of the universal joint bush can escape.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: November 16, 2010
    Assignee: Schaeffler KG
    Inventors: Frank Jauernig, Manfred Lehmeier, Dieter Jauernig, Martin Kruppa
  • Publication number: 20100201072
    Abstract: A one-piece shaft seal apparatus and related method are disclosed for use in machines having a rotating shaft and a rolling-element bearing. The integral shaft seal apparatus can include a substantially rigid, annular frame secured between a machine support structure and a rolling-element bearing surrounding a rotatable shaft, and some combination of a bearing seal portion extending from the frame, a housing seal portion that can be secured between the rolling-element bearing and the machine support structure, and a shaft seal portion extending between the frame and the shaft, wherein fluid in the race can be separated from fluid sealed by the shaft seal portion. The bearing seal portion can snap in place between the races of the bearing, while the shaft seal portion can be at least partially in fluid-tight contact with the shaft.
    Type: Application
    Filed: February 6, 2009
    Publication date: August 12, 2010
    Inventors: Jeffrey A. Wians, Scott J. Kaskawitz
  • Publication number: 20100148446
    Abstract: A seal assembly including a seal body; an augmentation configuration partially radially displaced from the seal body; a filler material at least partially disposed between the seal body and the augmentation configuration and method.
    Type: Application
    Filed: December 11, 2008
    Publication date: June 17, 2010
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: SEAN GAUDETTE, BENNETT RICHARD, Gerald Lynde, Clint Mickey
  • Patent number: 7584924
    Abstract: A high-speed vertical take-off and land aircraft includes a body with an engine supported by the body. A fan assembly is also carried by the body. The fan assembly includes a hub and a plurality of blades to provide vertical lift for the aircraft. A nozzle ring is provided on the fan assembly. The nozzle ring includes an annular nozzle array. Hot gases from the engine are fed to the nozzle array by a feed duct. A bearing mechanism supports the fan assembly on the body. The bearing mechanism is carried in a work space. A brush seal assembly thermally isolates the work space from the hot exhaust gases passing through the feed duct to the nozzle array.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: September 8, 2009
    Assignee: Go Aircraft Ltd.
    Inventor: Gordon Y. W. Ow
  • Publication number: 20090146379
    Abstract: Seal assemblies and methods for forming them are described. Aspects of the seal assemblies include a seal ring made of a relative soft material supported by a specially configured backing ring made of a much higher modulus material, such as ferrous and non-ferrous metal or engineered plastic. The seal assemblies may optionally include a retaining ring to prevent slippage relative to the environment or housing in which they are placed and to prevent shuttling. The seal assemblies may also optionally include an energizer to alter the force generating by a sealing lip on the seal ring.
    Type: Application
    Filed: December 5, 2008
    Publication date: June 11, 2009
    Inventors: Mike Foster, Majid Ghasiri
  • Publication number: 20090142180
    Abstract: A circumferential sealing arrangement is disclosed herein. The circumferential sealing arrangement includes a structure operable to rotate about an axis and having a first surface facing radially outward. The circumferential sealing arrangement also includes a static housing circumscribing the rotatable structure. The circumferential sealing arrangement also includes at least one seal element connected to the static housing and having a second surface facing radially inward. The circumferential sealing arrangement also includes a seal runner rotatable with the structure and having a third surface facing radially outward. The third surface cooperates with the second surface to form a circumferential seal between the static housing and the rotatable structure. A radial gap is defined between the first surface of the rotatable structure and a fourth surface of the seal runner facing radially inward and opposing the first surface.
    Type: Application
    Filed: November 29, 2007
    Publication date: June 4, 2009
    Inventor: JOHN MUNSON
  • Publication number: 20090127002
    Abstract: A roller cone bit having an elastomeric seal with a self break-in property is disclosed. The elastomeric seal includes abrasive material on a sliding surface for facilitating break-in. Examples of abrasive materials include ground rock, hard metals, tungsten, tungsten carbide, tantalum, tantalum carbide, titanium carbide, titanium nitride, and minerals, diamonds and nanomaterial enhanced diamond.
    Type: Application
    Filed: November 21, 2007
    Publication date: May 21, 2009
    Inventor: Chih Lin
  • Publication number: 20090091088
    Abstract: A sealing system for a turbomachine for sealing an annular gap between a rotor and a stator of the turbomachine has a sealing body which can be inserted into the annular gap and can bridge the latter, said sealing body being embodied elastically and thereby able to compensate for a height variation of the annular gap, and at least one sealing ring which is embedded in the sealing body such that the sealing ring is held by the sealing body in the annular gap between the rotor and the stator.
    Type: Application
    Filed: October 7, 2008
    Publication date: April 9, 2009
    Inventor: Oliver Berendt
  • Publication number: 20080309013
    Abstract: A mechanical seal assembly includes a rotary component having a rotary seal face, a stationary component having a stationary seal face and a central component arranged between the rotary component and the stationary component, which has a first seal face arranged adjacent the rotary seal face and a second seal face arranged adjacent the stationary seal face. The central component is configured so that, when seal face rotation of the rotary seal face or the stationary seal face, or both, occurs, the first seal face is configured to form a seal with the rotary seal face and the second seal face is configured to form a seal with the stationary seal face. The central component is arranged so that the first and second seal faces are aligned substantially parallel to the rotary and stationary seal faces, respectively. The central component is configured so that contact seals, or non-contact seals, form between the adjacent seal faces.
    Type: Application
    Filed: June 7, 2005
    Publication date: December 18, 2008
    Applicant: AES ENGINEERING LTD
    Inventor: Easa Taheri Oskouei
  • Publication number: 20080237992
    Abstract: A pair of pivoting parts are held together with a pin, with a first part, such as a rod end of a hydraulic actuator, positioned between two flanges of a bracket, with the flanges having surfaces mating with sides surfaces of the rod end. A seal is placed in each of a pair of recesses on the opposite side surfaces of the rod end to provide an annular seal around the surface of the pin as the parts pivot, and also having a flange forming a side seal that seats on one of the mating surfaces of the bracket at a location spaced outwardly from the pin and extending annularly around the pin. The seal portion engaging the pin is spaced inwardly from the respective side surface of the bracket, and the outer annular lip seals a space surrounding the pin to form a pocket to receive grease that is used to lubricate the pin relative to the rod end.
    Type: Application
    Filed: March 31, 2008
    Publication date: October 2, 2008
    Applicant: Clark Equipment Company
    Inventors: Knute K. Brock, William C. Shelbourn, Robert E. Purvis, Timothy T. O'Brien
  • Patent number: 7334311
    Abstract: A method of forming a brush seal which includes placing a bristle hoop sandwiched by a sideplate and a backplate in the cavity of a forming die. The components are then die formed together into a unitized brush seal.
    Type: Grant
    Filed: November 3, 2004
    Date of Patent: February 26, 2008
    Assignee: United Technologies Corporation
    Inventor: Mark E. Addis
  • Patent number: 6460635
    Abstract: A load responsive hydrodynamic bearing is provided in the form of a thrust bearing or journal bearing for supporting, guiding and lubricating a relatively rotatable member to minimize wear thereof responsive to relative rotation under severe load. In the space between spaced relatively rotatable members and in the presence of a liquid or grease lubricant, one or more continuous ring shaped integral generally circular bearing bodies each define at least one dynamic surface and a plurality of support regions. Each of the support regions defines a static surface which is oriented in generally opposed relation with the dynamic surface for contact with one of the relatively rotatable members. A plurality of flexing regions are defined by the generally circular body of the bearing and are integral with and located between adjacent support regions.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: October 8, 2002
    Assignee: Kalsi Engineering, Inc.
    Inventors: Manmohan S. Kalsi, Dezso Somogyi, Lannie L. Dietle
  • Patent number: 6257588
    Abstract: The brush seal includes manually-flexible, plastic-containing, brush-seal bristles attached to an elongated bristle holder. The rotary machine has a rotor and stator casing segments with segments of the brush seal positioned one each in a surface groove of a corresponding stator casing segment. In one example, the bristle holder is manually flexible, the bristles and the bristle holder define a monolithic unit, and the brush seal is coiled onto a spool from which a desired length is cut thereby avoiding the necessity of manufacturing a brush seal segment to a specific radius and a specific circumferential length to match a particular stator casing segment.
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: July 10, 2001
    Assignee: General Electric Company
    Inventors: Bharat Sampathkumaran Bagepalli, Mahmut Faruk Aksit, Robert Russell Mayer
  • Patent number: 6149158
    Abstract: A unitized oil seal assembly (20, 220, 320,420) has a sealing disk (34, 234, 334, 434) fabricated of a single water of PTFE-based material that is split along its radially outer edge to define a pair of split sections, one of which (48, 248, 348, 438) is fixed to an outer annular carrier member (30, 230, 330, 430) and supports the other split section (50, 250, 350, 450) and an unsplit section (52, 252, 352, 452) in sealing engagement with corresponding sealing surfaces of a wear sleeve (32, 232, 332, 432) to exclude contaminants and retaining lubricant, respectively, from passing by the seal assembly (20, 220, 320, 420).
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: November 21, 2000
    Assignee: Federal-Mogul World Wide, Inc.
    Inventor: Bhawani S. Tripathy
  • Patent number: 6085870
    Abstract: A lubricant transfer connection for transferring lubricant from a lubricant transfer line which feeds into a lubricant supply bore machined in a bearing support housing. A lubricant transfer bushing is located at the moving interface between the lubricant supply bore machined in the bearing support housing and a lubricant input port in a cam follower lever arm. The lubricant transfer bushing is designed so that it provides a movable, sealed, connection between the lubricant channel in the bearing support housing and the lubricant input port in the cam follower lever arm, in all positions of the cam follower and cam follower lever arm.
    Type: Grant
    Filed: March 13, 1998
    Date of Patent: July 11, 2000
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Mark Anthony Wingate, Glenn Alan Guaraldi