Peripheral Radially Sealing Flexible Projection (e.g., Lip Seal, Etc.) Patents (Class 277/351)
  • Patent number: 10982718
    Abstract: The invention relates to a rolling bearing equipped with a sealing device having a frame fixed to a first organ. The first organ has a downstream sector bearing a sealing element and presenting a U-shaped geometry formed of an axial bottom surrounded with an inner wall and an outer wall at its edges. The outer wall is extended by a deflector that separates, with the U-shaped geometry, the sealing chamber into an inner compartment and an outer compartment. The bearing also includes a wall fixed to second organ, which presents an outside section forming with the deflector a reduced sealing clearance between the outside opening of the chamber and the outer compartment. The deflector has an outer surface placed in the outer compartment and is slanted towards the opening at an angle ? from 10° to 80° relative to a radial direction.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: April 20, 2021
    Assignee: NTN-SNR Roulements
    Inventors: Fabien Desnoyer, Alexandre Curtet
  • Patent number: 10933520
    Abstract: A removable protection device is for a transmission seal providing tightness between a differential housing and a transmission shaft inserted therein during installation. The removable protection device includes a cylindrical, longitudinally slotted protection ring which is placed under the seal so as to protect same during the insertion of the shaft, a bearing flange for bearing on the housing, connected to the ring and having a radial opening following the slot of the ring, a removal handle attached to the bearing flange, and an abutment projecting axially towards the outside of the housing from the annular flange, so as to halt the insertion of the shaft in a reference position.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: March 2, 2021
    Assignee: RENAULT s.a.s.
    Inventor: Bruno Muller
  • Patent number: 10731706
    Abstract: A box type sealing structure including an oil throwing ring and sealing ring with a frame and sealing portion attached to the frame, the oil throwing ring including a centrifugal structure.
    Type: Grant
    Filed: May 27, 2017
    Date of Patent: August 4, 2020
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Xiaoyi Shi, Hongwei Song, Zhiheng Liu, Gilson Arima, Uwe Niebling, Fuqiang Cai, Xin Liu, Lijuan Wu
  • Patent number: 10677291
    Abstract: A sealing device including a sealing device main body 1 mounted on one of two members 101 that rotate relatively, and a seal flange mounted to the other of the two members 102. The sealing device main body 1 is provided with a structure provided with a seal lip 12 slidably connected to a seal flange 22, and a tube part 18 positioned further to the outer side than the seal lip 12. A labyrinth lip 15 is provided on the sealing device main body 1 positioned further to the outer side than the seal lip 12; and, the labyrinth lip 15 extends towards the radially opposite side to the tip end of the seal flange 22 facing the tube part 18 in a radial direction, as the tip end closely faces the seal flange 22 in an axial direction, and a labyrinth gap 3 is formed between the labyrinth lip 15 and the seal flange 22, and the tube part 18.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: June 9, 2020
    Assignee: NOK CORPORATION
    Inventor: Mari Senda
  • Patent number: 10612597
    Abstract: A sealing apparatus includes a sealing apparatus body that is to be attached to an outer ring of a hub bearing, and a slinger that is to be attached to a hub, in which the sealing apparatus body includes a reinforcing ring and an elastic body part. The elastic body part includes an outer periphery side labyrinth lip that is positioned on an outer periphery side of an outer periphery side end portion of the slinger and forms a gap between the hub and the outer periphery side labyrinth lip, an inner periphery side labyrinth lip, and a side lip. A distal end portion of the outer periphery side labyrinth lip is positioned on the outer side of the outer periphery side end portion of the slinger in a direction of an axis, and the outer periphery side labyrinth lip forms a groove portion in an annular shape centered about the axis and depressed toward the inner periphery side at the outer periphery side labyrinth lip on the outer periphery side.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: April 7, 2020
    Assignee: NOK CORPORATION
    Inventor: Takuya Kato
  • Patent number: 10352450
    Abstract: The invention provides a sealing device sealing so as to prevent a sealed fluid in a machine inner side from leaking to a machine outer side between a housing and a rotating shaft which is inserted to a shaft hole provided in the housing. The sealing device has a seal flange which is installed to an outer periphery of the rotating shaft, and a seal lip which is installed to an inner periphery of the shaft hole of the housing and slidably comes into contact with the seal flange over an entire periphery. The sealing device includes a thread groove which exerts a fluid pumping action when the rotating shaft rotates. The thread groove is provided at a position which does not intersect a contact area where the seal lip slidably comes into contact with the seal flange over the entire periphery, thereby suppressing generation of static leakage.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: July 16, 2019
    Assignee: NOK Corporation
    Inventors: Satoshi Yamanaka, Norimasa Hosonuma, Maiko Kawamoto, Fangman Xu
  • Patent number: 10060532
    Abstract: An oil seal, which is provided on an outer circumference of a crankshaft to prevent leakage of two fluids such as a lubricating oil and an engine oil, includes: a first seal that seals a flywheel side; a second seal that seals an engine side; a pressure release hole provided to at least one of the first seal and the second seal so that a space surrounded by the first seal, the second seal and the crankshaft is in communication with one of the flywheel side and the engine side through the pressure release hole; and a partitioning lip provided between the first seal and the second seal to divide the space.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: August 28, 2018
    Assignee: KOMATSU LTD.
    Inventor: Keisaku Iwakata
  • Patent number: 9926981
    Abstract: A labyrinth seal bearing includes: an inner ring; an outer ring; a labyrinth seal structure, located in a radial gap between the inner ring and the outer ring; wherein the labyrinth seal structure includes a plurality of seal rings, a labyrinth gap channel is formed among the plurality of seal rings, and the labyrinth gap channel includes two ports respectively connected with an external of the bearing and an internal of the bearing; and a seal loop made from lubricating grease, wherein the seal loop is located in the labyrinth gap channel, and blocks the labyrinth gap channel, so as to isolate the two ports from each other. The present disclosure solves the problem of poor sealing effect in a conventional labyrinth seal bearing.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: March 27, 2018
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Lai Wei, Caifen Liu, Xin Liu
  • Patent number: 9927031
    Abstract: A sealing structure that allows for formation of a side lip, as well as a labyrinth structure between an oil seal and a torsional vibration damper, even when a reinforcing ring has a short inward flange part. The sealing body 120 includes a side lip 124 extending from near a distal end of an inward flange part 112 of the reinforcing ring 110 radially inward and further toward an air side (A) than a dust lip 122 to a position not as far as the outer circumferential surface of a tubular part 210. The tubular part 210 includes a small-diameter part 211 on which the dust lip 122 slides, and a large-diameter part 212 on the air side (A). The large-diameter part 212 has a tapered surface 212a formed on an outer circumferential surface thereof that reduces in diameter toward the air side (A). An annular gap S is formed between this tapered surface 212a and an inner circumferential surface of the side lip 124.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: March 27, 2018
    Assignee: NOK CORPORATION
    Inventors: Shinya Omoto, Toru Nakashima, Hiroki Matsui, Yusuke Kamiya
  • Patent number: 9914326
    Abstract: A wheel end assembly for a heavy-duty vehicle includes an axle spindle and a hub rotatably mounted on the axle spindle. A main seal extends radially between the axle spindle and the hub. The seal includes a dynamic portion that seats in a bore formed in the wheel hub, and a static portion that seats on the axle spindle. The static portion includes a rigid carrier that in turn includes a first member, and a second member that is rigidly attached to the first member. An elastomer is bonded to the carrier member and forms a first external lip. The first external lip extends generally parallel to a chamfer formed in an inboard end of the hub. The first external lip, other external features, and internal features prevent contaminants from entering the wheel end assembly, retain lubricant in the assembly, and provide a dynamic expulsion surface to expel contaminants.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: March 13, 2018
    Assignee: Hendrickson USA, L.L.C.
    Inventors: Jay D. White, Jeffrey S. Morris, Gerald A. Greca
  • Patent number: 9890846
    Abstract: A gearbox vent apparatus includes: a gearbox; an accessory contained in a case mounted to the gearbox such than an interior space of the case communicates with an interior space of the gearbox, wherein the case includes a sidewall and an endwall, a hollow drive shaft mounted for rotation inside the case; an annular first seal element mounted to the drive shaft; an annular second seal element mounted to the case and contacting the first seal element so as to define a sealing interface; and a vent tube having a forward end coupled to the endwall in fluid communication with the drive shaft.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: February 13, 2018
    Assignee: General Electric Company
    Inventors: Mark Gregory Wotzak, Duane Howard Anstead, Bojan Lukovic, James John Luz, Thomas Charles McCarthy, Keith Beatty
  • Patent number: 9403558
    Abstract: An engine mount assembly includes a frame member and a cradle member. The frame member defines a frame hole and the cradle member defines a cradle hole. A bolt fixedly mates the frame member to the cradle member. The bolt has a bolt body, which is disposed within the frame hole and the cradle hole, and a bolt flange oriented downward relative to the vehicle. A well is defined by the frame hole or the cradle hole. The well is a volume around the bolt body capable of retaining water in contact with the frame member and or cradle member. A washer, having an interior hole and a perimeter edge, is disposed between the bolt flange and the well. At least one channel is defined in the washer and provides fluid communication between the well and the perimeter edge.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: August 2, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Kevin J. Pohl, Kenneth J. Hsu, William A. Morris, Frederick M. Marquardt
  • Patent number: 9133938
    Abstract: A sealing device with a lip edge portion 2a and a sealing-space-opposite-side conical surface 2b whose diameter increases from the lip edge portion 2a toward a sealing space B opposite side is formed on an inner peripheral surface of a seal lip 2, and a first thread ridge 21 that obliquely extends in a given direction with respect to a circumferential direction, a second thread ridge 22 that obliquely extends in a direction opposite to the direction in which the first thread ridge 21 obliquely extends, and a circumferential ridge 23 that extends in the circumferential direction while intersecting the first thread ridge 21 and the second thread ridge 22 are formed on the sealing-space-opposite-side conical surface 2b.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: September 15, 2015
    Assignee: NOK CORPORATION
    Inventor: Kokichi Hamamoto
  • Patent number: 9011014
    Abstract: A rolling bearing which can be large-sized, has corrosion resistance, and is allowed to prevent mounting accuracy from deteriorating, a fixing force from decreasing, vibration from occurring at a portion of the rolling bearing to be fixed to a bearing box or the like, and can be used for a long term even in a highly corrosive environment. A rolling bearing (1) has an inner ring (2), an outer ring (3), and rolling elements (4) as bearing members thereof. Of regions of the bearing members which are exposed to a corrosive environment, a film having a sacrificial anode action for a base material of the bearing members is formed in a region including at least a surface (c, d) of the rolling bearing (1) to be fixed. The film formed on the surface (c, d) thereof to be fixed is porous.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: April 21, 2015
    Assignee: NTN Corporation
    Inventors: Katsuhiro Suzuki, Eiichirou Shimazu
  • Publication number: 20150014937
    Abstract: A fluid sealing assembly includes a shaft and a seal. The shaft includes a surface portion having a microstructural geometry. The seal has a radially flexible portion disposed in proximity to the surface portion having the microstructural geometry such that when the shaft is rotated a pressure differential is generated at the interface of the seal and the surface portion having the microstructural geometry that pushes or pulls fluid relative to the interface.
    Type: Application
    Filed: December 31, 2013
    Publication date: January 15, 2015
    Inventors: Chad A. Behrman, Andrew D. Copeland
  • Publication number: 20140374993
    Abstract: A seal assembly includes a stator attached to a housing and a rotor attached to a shaft. A static sealing member is attacked to the stator presenting a contact with the rotor at stand-still. An electromagnetic is attached to the stator at a distance from an end of the static sealing member. The static sealing member is activated and moved away from the rotor by the magnetic force exerted by the electromagnet as the shaft rotates. The electromagnet is controlled by a control system for controlling the equipment in which the bearing isolator is used. To deactivate the static sealing member during shaft rotation, the bearing isolator may have its own control system with a sensor to indicate if the shaft is rotating. As the shaft rotates, contaminants are expelled through gaps between the stator and the rotor.
    Type: Application
    Filed: December 14, 2012
    Publication date: December 25, 2014
    Applicant: Aktiebolaget SKF
    Inventors: Sven Anders Jönsson, Yefim Epshetsky, Bryan Uncapher
  • Publication number: 20140300058
    Abstract: Sealing device for an enclosure (E1, E2) of a turbine engine (1) formed by an assembly of juxtaposed rotating and/or static bodies, the sealing device comprising at least one brush seal (10) having a brush body (101), carried by at least one first member (11), and bristles (102) extending from said brush body and arranged so as to rub against at least one second member (12) rotatable relative to the first member, so as to produce a pressure difference between the inside of said enclosure and its outer environment (E3), characterised in that said device further comprises a labyrinth-type seal (6), said labyrinth being positioned in series with said brush seal between the inside of said enclosure and its outer environment.
    Type: Application
    Filed: December 3, 2013
    Publication date: October 9, 2014
    Applicant: SNECMA
    Inventors: Antoine Robert Alain BRUNET, Delphine LEROUX, Gilles AOUIZERATE
  • 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
  • Patent number: 8727161
    Abstract: A rim seal system between the outer periphery of an internal floating roof and the bulk liquid tank wall including a laterally deployed first resilient or flexible seal member and a second laterally deployed rigid seal member interposed between the distal end of the first seal member and the tank wall where the rigid seal member provides protection from abrasion of the resilient or flexible seal member by frictional contact with the tank wall. An outwardly expanding hanger assembly mounted above the seal system maintains the rigid seal member in contact with the tank wall.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: May 20, 2014
    Inventor: David Jon Rosenkrantz
  • Patent number: 8696211
    Abstract: A compact cassette seal and a corresponding wheel hearing for a passenger car or truck. The cassette seal has a bent sheet-metal ring which is and/or can be non-rotatably connected to a radially inner component and an annular sealing system which is non-rotatably connected to a radially outer component. The sealing system has a bearing ring and a radially peripheral seal with at least one sealing lip. The seal is secured to the bearing ring and the sealing lips resting on the bent sheet-metal ring in a sealing manner. A radially outer ring end section of the sealing system defines a labyrinth seal with a bent sheet-metal section of the bent sheet-metal ring. The bent sheet-metal section radially overlaps the ring end section on the exterior thereby forming an axially aligned or substantially axially aligned labyrinth seal section of the labyrinth seal.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: April 15, 2014
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Alexander Haepp, Robert Heuberger, Marc-Andre Schaefer, Wilhelm Walter
  • Publication number: 20140084672
    Abstract: A sealing device including an annular reinforcing insert couplable with a wheel hub in use and an annular sealing element carried by the reinforcing insert and including at least one sealing lip cooperating with a spacer carried by a wheel support pin in use; the reinforcing insert delimits an annular chamber arranged directly adjacent to the annular sealing element in axial direction, and the device further includes a shield mounted in floating manner with radial and axial play in the annular chamber, including a first radial end, which extends to the lip and couples in forced manner with the spacer in use, and a second radial end, opposite to the first, which cooperates with the reinforcing insert and with the annular sealing element to create a labyrinth seal in the annular chamber interposed in use between the annular lip and an environment (E) external to the wheel hub.
    Type: Application
    Filed: September 27, 2013
    Publication date: March 27, 2014
    Applicant: Aktiebolaget SKF
    Inventors: Paolo Giraudo, Alessandro Lo Conte
  • Publication number: 20140027984
    Abstract: An abeyance seal includes a polymer actuation ring, which defines a flexible sealing lip normally spaced from the shaft. When subjected to leakage, this element collapses against the shaft and forms an initial sealing. Secondarily, a metal sealing/anti-extrusion ring provides a second seal during leakage. The polymer ring provides the initial sealing function during leakage at low differential pressure, and once the polymer ring seals to the shaft, increased sealed pressure loads the polymer ring against the metal sealing/anti-extrusion ring causing it to deform so that the metal ring comes into contact with the shaft to form a second seal.
    Type: Application
    Filed: January 17, 2013
    Publication date: January 30, 2014
    Applicant: FLOWSERVE MANAGEMENT COMPANY
    Inventors: James D. Saucerman, Lionel A. Young, Ronald L. Grace, John Davis, David Zegres
  • Patent number: 8596872
    Abstract: A bearing assembly is presented having a novel bearing seal design that, in one embodiment, combines the sealing advantages of both a labyrinth-like seal in combination with a contact seal. The seal is held perpendicularly to the sealing surface, and in one embodiment, substantially divides the sealing forces equally between the lubricant seal portion and the dust seal portion of the seal by virtue of the symmetry of the seal geometry and the application of the resisting force substantially along the seal body's centerline. The seal departs from the cantilever geometry of prior art seal designs, and in one embodiment, provides an inherently stiffer seal.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: December 3, 2013
    Assignee: Amsted Rail Company, Inc.
    Inventor: Jessica Pruden
  • Patent number: 8556606
    Abstract: A screw fluid machine has a first non-contact seal, a second non-contact seal and a lip seal disposed between a rotor chamber and a bearing for a rotor shaft located on the high pressure side, and in this order from the rotor chamber side. It includes a pressurized communicating channel for introducing high-pressure target gas into a pressurized space formed between the first and second non-contact seals, a pressurized pressure detecting device for detecting the pressure of the pressurized space, and an alarm device for generating an alarm when a value detected by the pressurized pressure detecting device falls out of a predefined range of pressurized pressures. The screw fluid machine is capable of detecting or predicting a condition of the shaft sealing device and accurately and reliably reporting the detected condition to an operator.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: October 15, 2013
    Assignee: Kobe Steel, Ltd.
    Inventor: Toru Noguchi
  • Patent number: 8529234
    Abstract: A water-lubrication type screw fluid machine has a first non-contact seal, a second non-contact seal and a lip seal disposed between a rotor chamber and a bearing for a rotor shaft. The bearing is located on the high pressure side and in this order from the rotor chamber side. the bearing includes a low pressure communicating channel for allowing an outflow space formed on the rotor chamber side with respect to the first non-contact seal to communicate with a low pressure channel for the target gas communicating with a low pressure space inside the rotor chamber or the rotor chamber, a pressurized communicating channel for introducing high-pressure target gas into a pressurized space formed between the first and second non-contact seals, and an open communicating channel through which an open space formed between the second non-contact seal and the lip seal opens to the outside of the casing.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: September 10, 2013
    Assignee: Kobe Steel, Ltd.
    Inventors: Shoji Yoshimura, Toru Noguchi
  • Publication number: 20130127119
    Abstract: A sealing assembly for sealing a rolling bearing, between a first and a second bearing part, where the two bearing parts are rotatable relative to each other and form therebetween both an axial space and a radial space. The sealing assembly includes: A contact member having a mounting section for attachment and a ring-shaped contact section for positioning the contact member on the second bearing part, and a carrier mountable to the first bearing part and has an elastic member forming a first axial sealing lip and/or a radial sealing lip. The contact member and a radially extending portion of the second bearing part together form a first collecting channel, and that an opening leading into the first collecting channel should be at least partially defined by an end section of the contact member.
    Type: Application
    Filed: May 31, 2011
    Publication date: May 23, 2013
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Alexander Haepp, Wilhelm Walter
  • Publication number: 20130115049
    Abstract: A shaft seal includes more than one sealing module, at least one fluid supply and a fluid discharge, and a main seal which is subject to a greatest partial pressure difference. A second main seal is a radial double seal, which includes two gas seals, each gas seal having a rotating sealing surface and a stationary sealing surface, wherein the two sealing surface pairs are located opposite each other in a sealing plan, and wherein the two sealing planes have substantially radial extension to the shaft.
    Type: Application
    Filed: April 28, 2011
    Publication date: May 9, 2013
    Inventor: Dirk Grieshaber
  • Patent number: 8128095
    Abstract: An improved mechanical shaft seal to give a tight seal between relatively rotating machine parts and prevent the escape of particulate material into the atmosphere or into the mechanical components of the housing under adverse operating conditions. The seal provides a grease chamber that prevents solid particles from reaching the main seal by migration within the mechanical shaft seal.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: March 6, 2012
    Assignee: Plattco Corporation
    Inventors: Dean Surprenant, Patrick J. Noel, Jeffrey S. Spooner
  • Publication number: 20110103728
    Abstract: A seal for a bearing has a first and a second circumference, and an anchor portion proximate to the first circumference. A span portion extends from the anchor portion towards the second circumference, and a lip extends from the span portion towards the second circumference. The lip protrudes from the span portion transversely to the span direction. A bearing and seal assembly includes a first ring and a second ring in rotatable engagement with the first ring. The first ring defines a groove and the second ring defines a contact surface. The seal is mounted in the groove, the span portion extending from the anchor portion towards the second ring, and the lip extending from the span portion towards the second ring, engaging the contact surface. The bearing and seal assembly may be used as a pitch bearing and/or a yaw bearing in a wind turbine.
    Type: Application
    Filed: October 15, 2010
    Publication date: May 5, 2011
    Applicant: ROLLER BEARING COMPANY OF AMERICA, INC.
    Inventors: John Cowles, Charles Houle, Roman Malychok, Robert Pallini, Serge Bochnovich
  • Publication number: 20110044569
    Abstract: A compact cassette seal and a corresponding wheel hearing for a passenger car or truck. The cassette seal has a bent sheet-metal ring which is and/or can be non-rotatably connected to a radially inner component and an annular sealing system which is non-rotatably connected to a radially outer component. The sealing system has a bearing ring and a radially peripheral seal with at least one sealing lip. The seal is secured to the bearing ring and the sealing lips resting on the bent sheet-metal ring in a sealing manner. A radially outer ring end section of the sealing system defines a labyrinth seal with a bent sheet-metal section of the bent sheet-metal ring. The bent sheet-metal section radially overlaps the ring end section on the exterior thereby forming an axially aligned or substantially axially aligned labyrinth seal section of the labyrinth seal.
    Type: Application
    Filed: November 12, 2008
    Publication date: February 24, 2011
    Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
    Inventors: Alexander Haepp, Robert Heuber, Marc-Andre Schaefer, Wilhelm Walter
  • Patent number: 7874771
    Abstract: The invention provides an improved seal structure of cutting fluid supplied to a spindle of a milling spindle. The milling spindle 100 comprises a spindle 20 supported within a housing via a bearing 16, and a drawbar 24 having a through coolant passage 22. The cutting fluid C1 passing through the rotary joint 40 and 50 is sent to the through coolant passage 22, but a portion thereof is collected in a drain chamber 105. A rotation member 110 is attached to a rear end portion of the spindle 20, which is equipped with a labyrinth device 150 having a lip seal member 152. An air supply member 120 has two air seal members 142 and 144, and air A1 is sent toward the labyrinth device 150, by which an air seal is formed.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: January 25, 2011
    Assignee: Yamazaki Mazak Corporation
    Inventors: Hiroki Ikuta, Hiroki Tazawa, Yoshikuni Ohta, Jojiro Kimura
  • Publication number: 20100276891
    Abstract: A combination seal is attached to a bearing comprising a fixed element and a rotating element which rotate relative to each other, so as to seal an inner side and an outer side of the bearing. The combination seal is comprised of a seal ring and a slinger. The seal ring is comprised of a reinforcing ring and an elastic seal supported by the reinforcing ring. A leading end side of the elastic seal, supported by the reinforcing ring extending toward the slinger, is brought into contact with a surface of the slinger, which is opposite to the seal ring, when the combination seal is attached to the bearing. During a combining work process, when combining the seal ring and the slinger to form the combination seal, a seal lip does not turn over and the seal lip can be held toward a predetermined direction without using a specific jig during the combining work process and without being particularly careful during performance of the combining work process.
    Type: Application
    Filed: July 13, 2010
    Publication date: November 4, 2010
    Inventors: Hideo MIZUTA, Hironori YAMAMOTO, Masanori TOMIOKA
  • Publication number: 20100187764
    Abstract: A seal cavity throat bushing, for use with rotating fluid equipment having a seal cavity, is defined by a rotary shaft having an axis. The shaft housing surrounds at least a portion of the shaft and a sealing device engages the shaft and the housing at one end of the cavity. The bushing includes an annular element, which is adapted for a tight fit in a housing at the entrance to the cavity opposite the one end. The annular element has a radially outer cylindrical surface for contacting a cavity wall of the housing and a radially cylindrical surface having a diameter greater than that of the shaft to define a gap there-between.
    Type: Application
    Filed: July 18, 2008
    Publication date: July 29, 2010
    Inventor: Alan James Roddis
  • Publication number: 20100104232
    Abstract: Prior to assembly of an elastic member (51) to a slinger (52), a radially inner surface (58) of a first portion (56) is formed in a concave shape, and a radially inner surface (59) of a second portion (57) is formed in a conical shape. The second axial lip (55) is adapted such that, after the elastic member (51) is assembled to the slinger (52) and when a second axial lip (55) is in a not-yet-worn state, the second axial lip (55) does not come into contact with a fixation section (65) of the slinger (52).
    Type: Application
    Filed: October 23, 2007
    Publication date: April 29, 2010
    Inventors: Masahiro Tabata, Kazutoshi Yamamoto, Kasumi Yamamoto
  • Publication number: 20100090411
    Abstract: A sealing device for sealing a space between a rotary side member and a stationary side member which comprises a slinger with a specific structure is disclosed.
    Type: Application
    Filed: September 25, 2009
    Publication date: April 15, 2010
    Applicant: Uchiyama Manufacturing Corp.
    Inventors: Hironori Yamamoto, Koki Ishida, Tatsuo Katayama, Tadashi Kasamoto, Yoshihiko Yamaguchi, Chihiro Asanuma
  • Publication number: 20100007090
    Abstract: To secure stability of the stacked sealing devices, a magnetic encoder-equipped sealing device has the slinger attached to either of two relatively rotating members and the lip seal attached to the other, the slinger has a magnetic encoder at one end face in the axial direction, the lip seal is formed by attaching a seal lip to an attachment ring and is slidably in contact with the slinger, an adhesion prevention projection, formed from a rubbery elastic body, is provided on the other end face in the axial direction of the attachment ring to prevent mutual adhesion of sealing devices when they are stacked, and the adhesion prevention projection (7) has a tapered cross-sectional shape in which an inner peripheral side-face (7a) of the projection (7) tilts relative to a rotation axis (O) at an angle greater than the tilt angle of an outer peripheral side-face (7b).
    Type: Application
    Filed: January 24, 2008
    Publication date: January 14, 2010
    Applicant: NOK CORPORATION
    Inventor: Naoto Kobayashi
  • Publication number: 20090322032
    Abstract: In a sealing device (1) formed by combining a seal member (11) and a slinger (31), the seal member (11) has a first side lip (19) slidably in close contact with an axial end surface (33a) of the slinger (31), and a second side lip (20) arranged closer to an object of sealing than the first side lip (19) at the outside of the first side lip (19), wherein, in order to minimize torque generated during the sliding as much as possible, the second side lip (20) is shaped so as to have smaller interference allowance than that of the first side lip (19), or the second side lip (20) may be formed as a labyrinth structure in non-contact with the axial end surface (33a) of the slinger (31) with the interference allowance being set to zero.
    Type: Application
    Filed: December 12, 2007
    Publication date: December 31, 2009
    Applicant: NOK CORPORATION
    Inventor: Go Kanzaki
  • Patent number: 7637665
    Abstract: A bearing assembly includes an inner race and an outer race, with the outer race positioned such that the inner race is an opposed and spaced apart relation from the outer race. Roller elements are disposed between the inner race and the outer race. A resilient seal element extends adjacent to a flange element, maintaining an effective seal during axial and/or radial movement, such as that caused by thermal expansion, of the resilient seal element relative to the flange element. The resilient seal element excludes contaminants from entering the bearing assembly and retains grease or lubricant within the bearing assembly.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: December 29, 2009
    Assignee: Emerson Power Transmission Corporation
    Inventor: John Cook
  • Publication number: 20090255742
    Abstract: MAW-DirectDrives are self-propelled independent direct drive units that connect to the inside of wheels. They rotate and stop electromagnetically and use the rotation of the wheel to generate electricity thru the incorporation of two frameless direct drive permanent magnets BLDC motors. They have one moving part, the integrated drive-plate assembly, a casted drive plate and spindle with an attached two-sided permanent magnets drive-rotor ring which engages and interacts with a customizable rear stationary power assembly responsible for supporting a vehicle and holding in position the two stators and optional air brake plus any sensors and accommodations for enhanced cooling formats. High constant torque eliminates the need for gearing and frees the second stator to harness the kinetic energy the vehicle produces during motion proportionate to the vehicle's linear momemtum plus allows every wheel on commercial vehicles to assist in its motion and power production.
    Type: Application
    Filed: April 13, 2009
    Publication date: October 15, 2009
    Inventor: Dana Allen Hansen
  • Publication number: 20090206553
    Abstract: A sealing device (1) formed by combining an inner peripheral sealing member (2) and an outer peripheral sealing member (3), where the inner peripheral sealing member (2) such as a slinger member is prevented from falling out in axially one direction from the outer peripheral sealing member (3) such as a lip seal member. The inner peripheral sealing member (2) has a metal ring (4) provided with a tubular section (4a) and a radially rising section (4b) integrally formed with the tubular section (4a) and extending radially outward from one end of the tubular section (4a). The outer peripheral sealing member (3) has side lips (7e, 7f) in slidable intimate contact with the radially rising section (4b) of the metal ring (4), and also has a radial lip (7g) provided without contact, on the outer peripheral side of the tubular section (4a) of the metal ring (4).
    Type: Application
    Filed: May 24, 2006
    Publication date: August 20, 2009
    Applicant: NOK CORPORATION
    Inventor: Go Kanzaki
  • Patent number: 7566293
    Abstract: A device for recirculating oil from the end face of the barrel and the peripheral surface of the roll neck of rolling mill rolls. A sealing race arranged between the bearing elements and the end face of the barrel is mounted on the roll neck. A first conical ring body has a conical outer surface and a cylindrical inner surface that is seated on the outer surface of the sealing race and is sealed from the race, whereby inclination of the conical outer surface towards the end face runs towards the roll axis. A second conical ring body is rigidly mounted in the bearing housing and has a conical inner surface, which conical inner surface is arranged some distance opposite the conical surface of the first conical ring body, such that the two conical surfaces form a hydraulic pump gap that conveys oil away from the end face.
    Type: Grant
    Filed: March 18, 2004
    Date of Patent: July 28, 2009
    Assignee: SMS Demag AG
    Inventors: Winfried Leisten, Wolfgang Denker
  • Publication number: 20090102134
    Abstract: A sealing device (A) with a tone wheel formed to seal between a fixed side member (4) and a rotating side member (3). A slinger (8) comprises a fitting cylindrical part (8a) fitted to the rotating side member (3) and a flanged part (8b) radially extendedly formed at one end part of the fitting cylindrical part (8a) positioned on the outer side of a sealed portion (S). The outer surface of the flanged part (8b) positioned on the outer side of the sealed portion (S) comprises a tone wheel stuck surface (8d) on which the tone wheel (9) formed of a magnetic ring is stuck integrally with each other and an extended surface (8c) on which the tone wheel (9) is not stuck and extended to the fixed side member (4).
    Type: Application
    Filed: May 22, 2006
    Publication date: April 23, 2009
    Applicant: Uchiyama Manufacturing Corp.
    Inventors: Masanori Shibayama, Hiroshi Seno
  • Patent number: 7380797
    Abstract: To provide a wheel support bearing assembly in which the frictional resistance can be effectively reduced while effects of minimizing leakage of the filled lubricant and ingress of dust and muddy water from outside of the bearing assembly are secured, the wheel support bearing assembly includes an outer member 1, an inner member 2 positioned inside the outer member 1 with an annular working space defined between it and the outer member 1, and rows of rolling elements 3 accommodated within the annular working space and rollingly received in part within outer raceways 4 in the outer member 1 and in part within inner raceways 5 in the inner member 2. Opposite open ends of the annular working space are sealed by respective sealing members 7 and 8 which are secured to one of the outer and inner members 1 and 2.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: June 3, 2008
    Assignee: NTN Corporation
    Inventors: Sadaji Katogi, Kazunari Yamamoto, Hiedeo Shinagawa
  • Patent number: 7284759
    Abstract: A mounting guard ring for a sealing ring with at least one sealing lip, surrounding a sleeve-shaped protective ring with a supporting surface for the sealing lip disposed at the outer periphery and a holding device shaped as a grip, the protective ring being provided in at least one peripheral region with a first predetermined breaking site and being capable of being severed along the first predetermined breaking site by pulling on the holding device, the protective ring being closed off in sealing manner by a disk-shaped lid.
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: October 23, 2007
    Assignee: Carl Freudenberg KG
    Inventors: Martin Heldmann, Gunter Hintenlang, Uwe Henrich
  • Patent number: 7125018
    Abstract: A low-friction seal comprising a quasi dimensionally stable sealing ring (44) that is accommodated with radial and axial clearance in a groove (30; 76) of one of two surface, whereby said surfaces are sealed off from each other and can move in a relative position to each other, and the peripheral section of the sealing ring protruding from the groove (30? 76) is placed opposite the other surface that is to be sealed. Means are provided between the side wall (34; 80, 82) of the groove on the side of the pressure-chamber and the sealing ring (44) in order to prevent pressure from spreading to the bottom (37, 78) of the groove, whereby radial deformation of the sealing ring in the direction of the surface that is to be sealed is avoided.
    Type: Grant
    Filed: July 9, 2003
    Date of Patent: October 24, 2006
    Assignee: Herbert Hanchen GmbH & Co. KG
    Inventors: Herbert Busse, Hans-Dieter Fabrowsky
  • Patent number: 7066467
    Abstract: A sealing device for a water pump bearing employs a seal member without an axial lip, and having only a radial lip. The sealing device includes an annular seal member which is fixed to a shoulder portion of one end in an axial direction of an outer race of a water pump bearing and an annular slinger which is positioned on a side of the one end in the axial direction with respect to the seal member and externally fixed to the outer peripheral face of a pump shaft serving as an inner race. The seal member has a section shape which is bent along a disk portion and an outer cylindrical portion of the slinger. A labyrinth seal portion is formed between the seal member, and the disk portion and the outer cylindrical portion of the slinger. Radial lips are formed on an inner periphery of the seal member.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: June 27, 2006
    Assignee: Koyo Seiko Co., Ltd.
    Inventor: Yoshizumi Sakata
  • Patent number: 7055828
    Abstract: A lubricant seal assembly has an outer seal component and a separate inner wear sleeve. The outer seal component has a carrier and a PTFE seal element which lays down against the wear sleeve to provide a seal collar extending to an oil side of the seal assembly. The wear sleeve is formed on an air side of the assembly with an end flange, but is free of any such flanges on the oil side. The end flange has an axial portion extending into the seal component to define a labyrinth debris exclusion path. One or more elastomeric debris exclusion lips are formed on the carrier and are precisely positioned relative to the wear sleeve with the aid of an installation tool that engages end faces of the seal component and wear sleeve to press them into precise axial alignment relative to one another in repeatable fashion.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: June 6, 2006
    Assignee: Federal-Mogul World Wide, Inc.
    Inventors: Frederick R. Hatch, Matthew J. Cibor, David M. Toth, Ronald J. Krimmer
  • Patent number: 6951337
    Abstract: A V-ring seal is disclosed for sealing between relatively rotatable surfaces in which the V-ring seal comprises PTFE and includes a body with an inner side for abutting against a first surface and a lip extending from the body towards a second surface, the lip including a rear side distal from the second surface, a front side proximate to the second surface, a lower portion proximate to the body, an upper portion distal from the body, a sealing surface on the front side of the lip for abutting the second surface to seal the second surface, and a resilient ring for providing a force acting on the lip to urge the sealing surface towards the second surface, the resilient ring being disposed on the front side of the lower portion of the lip whereby the resilient ring is concealed from the rear side of the lip.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: October 4, 2005
    Assignee: Metso Paper, Inc.
    Inventor: Jörgen T Lundberg
  • Patent number: 6923297
    Abstract: A seal device for use in sealing between parts of a thrust assembly of a disc brake has a support element (31) adapted to be carried by a first part (25) of the thrust assembly, the support element (31) carrying a seal (33) arranged so that, with the support element (31) in its position of use on the first part (25), the seal (33) engages a surface of a second part (25) of the thrust assembly in sealing relationship. Also disclosed is a thrust assembly for a disc brake and a disc brake incorporating such an assembly.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: August 2, 2005
    Assignee: Meritor Heavy Vehicle Braking Systems (UK) Ltd.
    Inventors: Paul Thomas, Paul Roberts, Don Hobday
  • Patent number: 6808179
    Abstract: A turbomachinery seal (20) attached to annular member (30) which surrounds and rotatably engages a shaft (34). The seal is capable of sealing pressure differentials between a high pressure region (24) and a low pressure region (26) well in excess of 300 psi at relatively low leakage rates. One embodiment (120) of the seal includes a plurality of confronting plates (128) arranged so as to form an annular structure. Another embodiment (220) includes a plurality of bristle packs (252), each positioned between annular plates (256) having an axial taper (278) adjacent radially inner ends (274). In another embodiment (320) bristles 334′ and 334″ extend in axial positive and negative directions so as to create an interleaved bristle structure. In yet another embodiment (720), a plurality of elongate members (450) are embedded within bristles (434). A turbomachine (550) includes seals 520′ and 520″ of the invention.
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: October 26, 2004
    Assignee: Concepts ETI, Inc.
    Inventors: Abhijit Bhattacharyya, William D. Marscher