Plural Peripheral Radially Sealing Flexible Projections Patents (Class 277/562)
  • Patent number: 10443650
    Abstract: A seal assembly for a bearing includes an inner seal member that has an annular ring with a first lobe extending therefrom and a seal receiving surface on a leg extending axially from the annular ring. The seal receiving surface has two seating areas. The seal assembly includes an outer seal member positioned radially inward from the leg and axially outward from the annular ring. The outer seal member has a pivot member which has a second lobe extending outwardly therefrom. The seal assembly includes a retaining ring that has a circumferential groove formed therein. The pivot member is pivotally seated in the groove so that the second lobe is moveable between the two first seating areas.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: October 15, 2019
    Assignee: Roller Bearing Company of America, Inc.
    Inventors: Phil Smith, Curtis Swartley, Nolan Richard
  • Patent number: 10125872
    Abstract: Device, system, and method are described directed to seal assemblies with support to reduce seal extrusion under high to very high pressure changes due to repeated piston reciprocating movement. In some examples, concave features are incorporated on the inner and outer edges of support and backup ring elements to support and hug the preceding element and constrain extrusion, as well as utilizing multiple contact points on certain elements in order to reduce friction against the dynamic surface. The seal assemblies described herein can also incorporate bearing surfaces to reduce damage to seal ID due to off-axis floating rod, such as incorporating one or more multi-point contacts to reduce friction.
    Type: Grant
    Filed: August 15, 2012
    Date of Patent: November 13, 2018
    Assignee: Bal Seal Engineering, Inc.
    Inventors: Michael Binder, Amin Tariq
  • Patent number: 10023394
    Abstract: The present invention relates to a pressure roller bearing for a pallet car of a pelletizing machine. The bearing includes an external annular race having: an exterior surface for reversible mating engagement with a tooth gap of a wheel, a pair of sidewalls defining ends of the bearing, wherein the radial diameter of the exterior surface at a center portion in the axial direction is greater than the radial diameter of the exterior surface at the ends of the bearing, and an interior annular groove; an internal annular race defining a hole therethrough for receiving an axle, and having an exterior annular groove; and a plurality of rolling cylindrical members located in an interior space defined by the interior annular groove and the exterior annular groove when the internal annular race is received by the external annular race.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: July 17, 2018
    Assignee: Cast Steel Products LP, By Its General Partner Cast Steel Products GP Ltd.
    Inventors: Daniel Betancourt, Cristobal J. Gonzalez
  • Patent number: 9845882
    Abstract: A double sealing device for a rotating shaft comprising a first and a second seal of annular form mounted side by side in a peripheral groove formed in a wall of a circular cylindrical housing through which the shaft to be sealed passes. At least one of a discharge or vent channel opens into the peripheral groove between the two seals. The seals comprise a carrier ring with an outer axial flange and an inner radial flange, and a sealing washer applied to each carrier ring to cover a part of an outer face of the axial flange. A sealing lip bearing is formed slidably on the shaft, the first seal sealing a first fluid medium and the second seal sealing a second fluid medium. The axial flange has an extension forming a pierced structure, not covered by the sealing washer of the seal, and disposed facing the peripheral groove.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: December 19, 2017
    Assignee: CARL FREUDENBERG KG
    Inventor: Dominique Lutaud
  • Patent number: 9835252
    Abstract: A system, in certain embodiments has, a fluid seal having a seal body, including a seal interface having one or more engagement portions, a first elastomer portion disposed along the seal interface, and a second elastomer portion disposed along the seal interface, wherein the first and second elastomers have material properties that are different from one another.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: December 5, 2017
    Assignee: ONESUBSEA IP UK LIMITED
    Inventor: Christopher George Kocurek
  • Patent number: 9719598
    Abstract: A seal including a generally annular casing, a generally annular sealing element that is configured to seal with a relatively movable member, and an insert coupled with the sealing element and the casing. The insert substantially maintains a relative position of at least a portion of the casing and at least a portion of the sealing element.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: August 1, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventor: Michael Thomas
  • Patent number: 9581201
    Abstract: A bearing (91), more particularly a radial anti-friction bearing, including a bearing ring (61) with a lateral surface (63) formed by at least one undercut (65), and at least one sealing element (93) having an elastomer portion (103) and an elastic retaining lip (99), wherein the elastomer portion of the sealing element is received in the undercut at least in some portions, wherein the lateral surface of the undercut has a contour (67) with a contact portion (69) for axially securing the elastic retaining lip, as well as an axial contact surface (71), on which an axial contact surface (101) of the elastomer portion of the sealing element lies flat, is provided.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: February 28, 2017
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Otmar Hartling, Thomas Fickert-Guenther, Manuel Lommel, Volker Kestler
  • Patent number: 9464720
    Abstract: A sealing assembly comprises a first annular shield presenting an axial sleeve portion for the mounting angularly integral with one of said members, and a flange portion which radially extends from a first end of the sleeve portion, and a sealing member made of elastomeric material presenting an annular root portion, which overhangingly and radially extends from a peripheral edge of the flange portion and a first axially sealing annular lip, as well as a second radially sealing annular lip. The lips extend overhangingly and axially on the opposite side of the first end of the sleeve portion, from a same side as a thinned end of the root portion and are reciprocally and divergingly arranged to form in radial section a V-shape having a vertex facing towards the root portion and an axis parallel to the sleeve portion.
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: October 11, 2016
    Assignee: AKTIEBOLAGET SKF
    Inventors: Marco Brunetti, Claudio Foti, Andrea Serafini
  • Patent number: 9394998
    Abstract: A shaft seal assembly includes a metal case having a wall extending cylindrically about a central axis with an annular leg extending radially inwardly from the wall toward the central axis. An elastomeric material is bonded to the leg and a primary seal lip is operably attached to the elastomeric material. The primary seal lip separates an oil side of the assembly from an air side of the seal assembly. The elastomer material has an annular groove formed on the air side of the primary seal lip. The assembly further includes an auxiliary lip subassembly including an annular metal washer with at least one auxiliary lip fixed thereto as a one-piece subassembly. The annular metal washer has an annular outer periphery snappingly received within the annular groove.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: July 19, 2016
    Assignee: Federal-Mogul Corporation
    Inventor: Frederick R. Hatch
  • Patent number: 9194496
    Abstract: A seal assembly includes an annular body coupled with an inner member or an outer member and has inner and outer circumferential surfaces and first and second annular sealing portions spaced along a centerline. The two sealing portions either extend radially outwardly from the outer surface and have an outside diameter, with the first portion diameter being greater than the second portion diameter, or extend radially inwardly from the body inner surface and have an inside diameter, with the first portion diameter being lesser than the second portion diameter. The seal body is radially deflectable such that the first sealing portion is engaged with one of the outer and inner members, and the second sealing portion is spaced from the member, when the body is exposed to pressure lesser than a predetermined value and both sealing portions are engaged with the member at pressures above the value.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: November 24, 2015
    Assignee: AKTIEBOLAGET SKF
    Inventor: Robert D. Pecak
  • Patent number: 9163731
    Abstract: To facilitate recycling and prevent rotation of constituent parts, a lip type seal has a first lip seal member constructed from a rubber-like elastic material, a metal-made retaining ring held at the first lip seal member without bonding, and a resin-made second lip seal member and a backup ring which are held at the retaining ring by caulking. The first lip seal member has a tubular portion, a radial portion, a seal lip, and a collar portion. The retaining ring has a cylinder portion, a first flange portion, and a second flange portion, and the second lip seal member and the backup ring are held between the first and second flange portions by caulking. A convex portion is provided at a position in the circumferential direction of the first flange portion, and the convex portion engages with the second lip seal member to prevent rotation of the second lip seal member.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: October 20, 2015
    Assignee: Eagle Industry Co., Ltd.
    Inventors: Masamitsu Sanada, Masatoshi Itadani
  • Publication number: 20150145216
    Abstract: A compliant plate seal assembly for a turbo machine includes a rotor and a stationary component. A plurality of compliant plates are coupled circumferentially to the stationary component. A natural frequency of each compliant plate varies from a natural frequency of adjacent compliant plates and/or gaps between adjacent plates to produce a zero-oscillation state between adjacent compliant plates in flow.
    Type: Application
    Filed: November 22, 2013
    Publication date: May 28, 2015
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Deepak Trivedi, Hrishikesh Vishvas Deo
  • Patent number: 9033345
    Abstract: A radial shaft seal for separating two media includes two radial shaft sealing rings each including an axial surface and a sealing lip. The sealing rings are disposed with the axial surfaces facing one another and the sealing lips axially opposed to one another with a space between the sealing lips including a vent. At least one of the sealing rings includes clamping cams configured to grip an inner rim of the other sealing ring so as to join the sealing rings in a form-locking, rear-engaging position relative to each other.
    Type: Grant
    Filed: February 21, 2011
    Date of Patent: May 19, 2015
    Assignee: CARL FREUDENBERG KG
    Inventors: Guenter Hintenlang, Christian Kohl
  • Publication number: 20150123351
    Abstract: A buffer ring includes an annular body portion 11 that makes close contact with a side wall face 131b of an annular groove 131; an inner peripheral lip 12 that extends toward a sealed fluid side O from an inner peripheral end portion of the body portion 11; and an outer peripheral lip 13 that extends toward the sealed fluid side O from an outer peripheral end portion of the body portion 11 and having an outer peripheral end portion making close contact with a groove bottom face 131a of the annular groove 131, the outer peripheral lip 13 being lower in stiffness than the inner peripheral lip 12, wherein a plurality of protrusions 14 that make close contact with the groove bottom face 131a of the annular groove 131 are provided on an outer peripheral face of the body portion 11 at intervals in a circumferential direction.
    Type: Application
    Filed: March 26, 2013
    Publication date: May 7, 2015
    Applicant: NOK Corporation
    Inventor: Takafumi Nakamura
  • Patent number: 8955849
    Abstract: A radial shaft seal and assembly are provided. The seal has an annular mounting portion and a seal body bonded thereto. The seal body extends to a seal lip extending between an oil-side end and a free air-side end. An annular bridge extends between the seal lip and a central portion of the seal body in radially overlying relation to the seal lip. A primary dust lip extends from the air-side end and has an annular rib configured for sealed abutment with a running surface of a shaft. The annular rib has at least one vent. An auxiliary dust lip extends from the central portion of the seal body to a free end configured for sealed abutment with the shaft. The free end of the auxiliary dust lip has at least one vent spaced circumferentially from the at least one vent in the annular rib.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: February 17, 2015
    Assignee: Federal-Mogul Corporation
    Inventor: Brent R. Sedlar
  • Patent number: 8939844
    Abstract: Cross-type universal joint and a shell-type needle bearing that is used therein. The portions on the outer surface of the shell-type outer ring for which there is a possibility of coming in sliding contact with the tip end edges of at least two seal lips of a plurality of seal lips of a seal ring are selectively covered with a corrosion resistant coating. Preferably, the entire outer surface of the shell-type outer ring is covered by a chemically treated film having anti-corrosion properties.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: January 27, 2015
    Assignee: NSK Ltd.
    Inventors: Masato Higuchi, Eisho Watanabe
  • Publication number: 20140374996
    Abstract: An arrangement including a first and second sealing assembly disposed between an inner ring and an outer ring of the wheel hub and straddling the wheel hub and an outer ring of a constant velocity joint, and an annular step formed on the side of the constant velocity joint on a radially outer lateral surface of the inner ring, in a position adjacent to a sleeve portion of a first shield of the first sealing assembly from a flange portion radially extends so as to protrude towards the outer ring, the flange portion being provided towards the constant velocity joint with a signal generating element (19) consisting of an annular insert; an end of a tubular core of the second sealing assembly is fitted angularly onto the step and is radially externally provided with an L-shaped edge arranged within the step and radially under the annular insert.
    Type: Application
    Filed: June 17, 2014
    Publication date: December 25, 2014
    Inventors: Daniele Duch, Fausto Morello, Andrea Serafini
  • Publication number: 20140304992
    Abstract: This method is for replacing sealing elements on a rolling bearing assembly comprising a rotatable element, a fixed element, and at least one bearing mounted between the rotatable element and the fixed element, at least one used sealing element being rotatably fastened to at least one of the rotatable element and the fixed element and having at least one sealing lip adapted to lay on a first surface of the element with respect to which the used sealing element rotates. The method comprises a step of mounting at least one replacement sealing element so that at least one sealing lip of the replacement sealing element lays on a second surface of the element with respect to which the used sealing element and the replacement sealing element rotate, this second surface being located at a predetermined distance of the first surface.
    Type: Application
    Filed: October 18, 2013
    Publication date: October 16, 2014
    Applicant: Aktiebolaget SKF
    Inventors: Bruno Capoldi, Siegfried Derrer, Matthias Krebs
  • Patent number: 8844935
    Abstract: A sealing arrangement for a bearing assembly. The sealing arrangement can include a static seal carrier coupled to a static component of the bearing assembly and including a first plurality of rings, a rotating seal carrier coupled to a rotating component of the bearing assembly and including a second plurality of rings, the first plurality of rings and the second plurality of rings disposed in an interdigitated arrangement so as to define a tortuous passageway therebetween, the tortuous passageway having one end in communication with a high pressure area of the bearing assembly and a second end in communication with a low pressure area of the bearing assembly, and a scraper seal coupled to the rotating seal carrier and disposed over the second end of the tortuous passageway.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: September 30, 2014
    Assignee: Gamesa Innovation & Technology, S.L.
    Inventor: Juan Redin
  • Publication number: 20140261033
    Abstract: For sealing between a doctor blade chamber (3) and a rotatable roller (16, 23) in a printing unit, there is provided a gasket (4) having an elastomeric edge (17, 18) for sealing abutment against the roller. The gasket includes a rigid/supporting rail (7) which during operational conditions of the printing unit bears against the roller together with the elastomeric edge or which is spaced apart from the roller.
    Type: Application
    Filed: August 13, 2012
    Publication date: September 18, 2014
    Applicant: Tresu A/S
    Inventor: Christian Fogh-Hansen
  • Patent number: 8828178
    Abstract: A sealing device which comprises a slinger fixedly fitted to the rotary side member, a core member fixedly fitted to the stationary side member, and an elastic sealing member fixed to the core member and having a seal lip which elastically and slidably contacts the slinger. The slinger comprises a fitting cylindrical portion to be fitted into the rotary side member, a brim portion extending its radial direction at one end of its outside relative to a sealed portion of the fitting cylindrical portion, and a rotary side fixing member fixed to the brim portion. Further, the slinger is made in such a manner that an adhesive layer is formed on its whole surface including a contacting side surface where the seal lip contacts by applying adhesive agent thereon, then the fixing member is integrally fixed thereto, thereafter the adhesive layer is partially removed only in the contacting side surface.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: September 9, 2014
    Assignee: Uchiyama Manufacturing Corp.
    Inventors: Hironori Yamamoto, Koki Ishida, Tatsuo Katayama, Tadashi Kasamoto, Yoshihiko Yamaguchi, Chihiro Asanuma
  • Patent number: 8800996
    Abstract: A shaft seal assembly includes a metal case having an annular leg extending radially inwardly to a free end with opposite oil and air sides of the leg facing respective oil and air sides of the seal assembly. An elastomeric material bonded to the leg forms a main body adjacent the free end and a primary seal lip radially inwardly from the main body. The primary seal lip has a sealing surface that extends between an air side end and free oil side end. The air side end is attached to an annular bridge via a first hinge and the bridge is operably attached to the main body via a second hinge. The first and second hinges each have a thickness that is less than a thickness of the bridge and the thickness of the first hinge is less than a thickness of the primary seal lip.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: August 12, 2014
    Assignee: Federal-Mogul Corporation
    Inventors: Brent R. Sedlar, David M. Toth
  • Publication number: 20140210166
    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: Application
    Filed: April 1, 2014
    Publication date: July 31, 2014
    Applicant: BAL SEAL ENGINEERING, INC.
    Inventors: Pete Balsells, Farshid Dilmaghanian, Derek Changsrivong
  • Publication number: 20140202809
    Abstract: A sealing device adapted to seal an outer periphery of a shaft member inserted into a tubular member includes a dust seal lip arranged on an outer side of the tubular member and an oil seal lip arranged on an inner side of the tubular member to form a space for accumulating working fluid between the oil seal lip and the dust seal lip. The dust seal lip includes a main lip portion and an auxiliary lip portion formed to be closer to the oil seal lip than the main lip portion. A maximum value of a surface pressure gradient absolute value of the inner side in the auxiliary lip portion is set to be larger than that of a surface pressure gradient absolute value of the outer side in the auxiliary lip portion.
    Type: Application
    Filed: October 19, 2012
    Publication date: July 24, 2014
    Applicant: KAYABA INDUSTRY CO., LTD.
    Inventors: Shinji Ozaki, Shusaku Saita, Kiyoaki Ito, Chikashi Imoto
  • Publication number: 20140175757
    Abstract: A seal component for a shaft seal assembly includes an elastomeric element and a substrate, wherein the seal component has an over-molded configuration in which the elastomeric element is over-molded onto the substrate. In one embodiment, the elastomeric element includes a pair of flexible arms that are compressible about an apex to energize the seal component. In another embodiment, the shaft seal assembly includes twist lock retention features for retaining the seal component within the housing structure. The seal component includes a plurality of locking features, and a plurality of cooperating locking slots is provided in the housing structure that respectively receive the locking features of the seal component. Specifically, when the seal component is rotated relative to the housing structure from an initial position to a second locked position, the locking features are compressed within the locking slots of the housing structure in the second locked position.
    Type: Application
    Filed: December 12, 2013
    Publication date: June 26, 2014
    Inventors: Berndt L. Luchs, Max Ellison
  • Publication number: 20140161619
    Abstract: The present invention relates to a sealing device (1) comprising a sealing circular piece (3), an inner ring (2) and an outer ring (4), one of the two rings being able to rotate relative to an axis, the circular piece (3) being arranged between the two rings (2, 4) and comprising two circular lips (300, 301) arranged in a groove (20) at right angles to the axis of rotation, a top lip (300) and a bottom lip (301) substantially at right angles to the top lip (300), said bottom lip (301) has a radius of curvature directed towards the interior, the groove (20) being provided on the outer face (21) of the inner ring (2) and a third circular lip (302) pressing on the outer face (21) of the inner ring (2), and a part (32) is fixed in an orifice (41) formed in the outer ring (4).
    Type: Application
    Filed: May 24, 2013
    Publication date: June 12, 2014
    Inventors: Eric JACQUEMONT, Jean-Michel Delacou, Didier Chatry
  • Publication number: 20140117623
    Abstract: An apparatus includes a rotatable shaft having a shaft surface and a first seal disposed in a sealing engagement with the shaft surface. At least a second seal is disposed in a first position relative to the rotatable shaft where the second seal is not in sealing engagement with the shaft surface and is movable to a second position relative to the rotatable shaft where the second seal is in sealing engagement with the shaft surface.
    Type: Application
    Filed: October 31, 2012
    Publication date: May 1, 2014
    Applicant: Canrig Drilling Technology Ltd.
    Inventors: Eric Deutsch, Michael Macklin, Beat Kuttel
  • Patent number: 8702312
    Abstract: A conveyor bearing includes an inner ring fitted on and fixed to a shaft, a plurality of rolling elements arranged rollably on a raceway surface of the inner ring, an outer ring disposed of rotatably relative to the inner ring via the rolling elements, and a seal member to seal in a grease between the outer ring and the inner ring. The seal member has a plurality of seal lips and is mounted on at least one location on the bearing.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: April 22, 2014
    Assignee: NSK Ltd.
    Inventors: Manabu Yamada, Masato Miyamoto
  • Publication number: 20140042710
    Abstract: A unitized radial fluid seal includes a shell having a first elastomeric seal body affixed thereto and defining a primary seal lip. A sleeve includes a substantially cylindrical, axially-extending sealing flange and a protective flange extending substantially radially from the axially-extending sealing flange. A spring radially urges the primary seal lip into sealing contact with a sealing surface of the axially-extending sealing flange. A second elastomeric seal body is affixed to the sleeve and includes a resiliently-elastic angled lip extending from a terminal end of the axially-extending sealing flange opposite of the radially-extending protective flange. The sealing surface and an axially-outward facing surface of the angled lip define an angle (?) that is between about 130-170°. The primary seal lip is axially retained between the angled lip and the radially-extending protective flange.
    Type: Application
    Filed: August 16, 2013
    Publication date: February 13, 2014
    Inventors: Linas Maskaliunas, Bret Thomas Dana
  • Publication number: 20140042709
    Abstract: A radial shaft seal and assembly are provided. The seal has an annular mounting portion and a seal body bonded thereto. The seal body extends to a seal lip extending between an oil-side end and a free air-side end. An annular bridge extends between the seal lip and a central portion of the seal body in radially overlying relation to the seal lip. A primary dust lip extends from the air-side end and has an annular rib configured for sealed abutment with a running surface of a shaft. The annular rib has at least one vent. An auxiliary dust lip extends from the central portion of the seal body to a free end configured for sealed abutment with the shaft. The free end of the auxiliary dust lip has at least one vent spaced circumferentially from the at least one vent in the annular rib.
    Type: Application
    Filed: June 4, 2013
    Publication date: February 13, 2014
    Inventor: Brent R. Sedlar
  • Publication number: 20140041564
    Abstract: A sealing gasket made of a resilient rubber material or rubber-like material. The sealing gasket is formed as a rotationally symmetric body with a substantially constant cross-sectional profile. The cross-sectional profile includes: a first sealing part located furthest away from a center of rotation of the body and a second sealing part located radially inside the first sealing part, as viewed in the radial direction. An open space is defined by the first and second sealing parts. The second sealing part essentially curves through an angle away from the center of rotation. A seed housing can include such a seal and a seeder can include such a seed housing.
    Type: Application
    Filed: March 8, 2012
    Publication date: February 13, 2014
    Applicant: Vaderstad-Verken AB
    Inventor: Gert Gilstring
  • Patent number: 8647085
    Abstract: A scroll fluid machine with ensured reliability of an oil seal and a bearing even in a compressor operation at high rpm and high load is provided, which includes: a fixed scroll; an orbiting scroll facing the fixed scroll and having a boss provided on a face opposite to the fixed scroll; a drive shaft having a leading end mounted to the boss; an orbiting bearing supporting the drive shaft in connection with the orbiting scroll; and a seal member placed between the boss and the drive shaft to seal against a lubricant supplied to the orbiting bearing. The seal member has an oil lip producing action of moving the lubricant toward the orbiting bearing by rotation of the drive shaft. A communication passage is provided in the oil lip for communication between a space between the orbiting bearing and the seal member and a space outside the boss.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: February 11, 2014
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kiminori Iwano, Susumu Sakamoto, Yoshio Kobayashi, Koichi Tashiro
  • Publication number: 20140026582
    Abstract: A seal assembly for a turbojet nacelle includes a first end fastened to a first structure, and a second end contacting against a bearing zone of a second structure. The seal assembly further includes a plurality of adjacent blades arranged along the first end and extending longitudinally and perpendicularly thereto. In particular, a portion of the blades has an accordion-shaped structure.
    Type: Application
    Filed: September 30, 2013
    Publication date: January 30, 2014
    Applicant: AIRCELLE
    Inventors: Stephane BEILLIARD, Alexandre PHI
  • Patent number: 8622397
    Abstract: An oil seal has a first seal member including a main lip and a first dust lip, and a second seal member installed in a machine outer side of the first seal member. The second seal member integrally has an end surface covering section covering an end surface section of a housing, an outer peripheral insertion section inserted from one side in an axial direction to an outer peripheral surface of the housing and engaged with a stepped engagement section in the outer peripheral surface of the housing so as to prevent the second seal member from coming off from the housing, an inner peripheral insertion section inserted to an inner peripheral surface of the shaft hole in the housing from one side in the axial direction, and a second dust lip slidably coming into close contact with the shaft in the machine outer side of the first dust lip.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: January 7, 2014
    Assignee: NOK Corporation
    Inventor: Kokichi Hamamoto
  • Patent number: 8608176
    Abstract: A sealing arrangement for the sealed leadthrough of rotating shafts (2) through housing bores of housings (1) comprises at least one lip seal (3, 8, 14, 15) with a sealing lip that faces toward the area normally under higher pressure. In order to extend substantially the area of application of sealing arrangements with lip seals and by doing so, to make use of the sealing arrangement to achieve its advantages of being more economical, more durable also at pressure peaks, easier to install, and easier to maintain, also at higher pressures and pressure fluctuations, the lip seal (3, 8, 14, 15) on the side (5) facing the area with higher pressure is under a constant pressure that is higher than the highest pressure occurring inside the housing (1), and a gap (7, 10) that throttles the outflow is provided between this area and the inside of the housing.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: December 17, 2013
    Assignee: Andritz AG
    Inventors: Thomas Bachhofner, Stephane Hörner
  • Publication number: 20130319770
    Abstract: A seal for a rolling cutter drill bit is provided. The seal has a ring shaped seal body having an inside diameter and an outside diameter, and a mud lobe and a grease lobe extending from the inside diameter of the seal body. The seal body has an asymmetrical, longitudinal cross-section such that, when positioned in a seal groove of the drill bit and compressed therein under downhole pressure, the mud lobe and grease lobe are maintained in contact with a seal land of the seal groove. The seal body may be provided with a garter spring and/or a textured pattern.
    Type: Application
    Filed: February 7, 2012
    Publication date: December 5, 2013
    Applicant: NATIONAL OILWELL VARCO, L.P.
    Inventor: Bruce H. Burr
  • Patent number: 8596870
    Abstract: A dust seal is provided with a tubular fitting portion, a bush end surface abutting portion, a lip portion and a sealing projection integrally formed. The sealing projection is formed to project in an axially opposite direction to the lip portion from a radial inner section of the bush end surface abutting portion and abuts against a chamfered portion of a bush in such a manner as to overlap the chamfered portion. Therefore, at the time of supplying lubricant between the bush and a connecting pin, the sealing projection can prevent a part of the lubricant from entering between an end surface of the bush and the bush end surface abutting portion of the dust seal to maintain a sealed state therebetween. In consequence, the dust seal can be stably held on the inner peripheral side of a boss member, preventing the pulling-out of the dust seal.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: December 3, 2013
    Assignees: Hitachi Construction Machinery Co., Ltd., Nippon Valqua Industries, Ltd.
    Inventors: Hideki Akita, Osamu Gokita, Akiko Sato, Eiji Negoro, Tomiyoshi Yamazaki
  • Patent number: 8590903
    Abstract: A dynamic shaft seal assembly is provided including a dynamic seal for engaging a rotary shaft. The dynamic seal includes a mounting portion that is mounted within a casing and has an axially extending barrel portion extending from a radially inner end of the mounting portion. The axially extending barrel portion terminates in a radially extending leg portion which extends inwardly from an end of the axially extending portion. A generally conically shaped seal portion extends from an end of the radially extending portion and the seal portion includes a radially inner face engaging the shaft and a radially outer face having a stiffening bead integrally formed thereon. The mounting portion defines a bumper spaced from the axially extending barrel portion by a gap distance that is designed to prevent the seal lip from inverting under sustained high pressure or pressure spikes.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: November 26, 2013
    Assignee: Freudenberg-NOK General Partnership
    Inventors: Alexander Berdichevsky, Rory S. Pawl, Patrick Scheib
  • Publication number: 20130300065
    Abstract: The present disclosure relates to sealing the propeller shaft of a ship using a sealing having a group of lip seals arranged consecutively in a direction of the propeller shaft so that a seal chamber is created between adjacent lip seals. The pressure of the first seal chamber on the propeller side can be close to the pressure of the surrounding water at the propeller shaft level, and the pressure of the second seal chamber furthest from the propeller can be adjusted to a fixed value that is lower than the pressure of the first seal chamber. The pressure of a third chamber located between the first chamber and the second chamber can be adjustable by pressure regulation devices to a value between the pressure values of the first and the second chambers by adjusting the pressure loss caused by the flow of a liquid medium.
    Type: Application
    Filed: December 2, 2010
    Publication date: November 14, 2013
    Applicant: ABB OY
    Inventor: Sami Palokangas
  • Publication number: 20130285333
    Abstract: A sealing device including an annular shield and an elastomeric sealing element having: a first lip extending radially and protruding towards the interior and axially from a first side face of the shield; a second annular lip which extends radially and protrudes towards the interior and axially from a second side face of the shield, opposite to the first one; and a third lip arranged between the first and the second lips and axially extending from the first lip side, axially spaced apart therefrom; the second and third lips extending from a common annular root portion defining an elastic hinge thus forming a V therebetween for rotating together as a rocker arm; the undeformed lips are radially internally delimited by respective edges having a substantially circular shape and the edges of the first and second lips having a smaller diameter than the diameter of the edge of the third lip.
    Type: Application
    Filed: April 5, 2013
    Publication date: October 31, 2013
    Applicant: AKTIEBOLAGET SKF
    Inventor: Claudio FOTI
  • Patent number: 8561996
    Abstract: The bearing seal assembly (50) includes a metal shield (70) and a resilient multi-lip sealing gasket (60) secured to the metal shield. The metal shield is supported in use by an outer ring (20) of a rolling contact bearing and includes a diagonally extending central portion (72). The sealing gasket (60) provides a number of contacting lips (62-64) facing an inner ring of the rolling contact bearing. A first, main contacting lip (66) exerts a first radial load on the inner ring. A second contacting lip (62) extends from the first lip (66) and exerts a second radial load on the inner ring lower than the first radial load. A third contacting lip (64) is on the opposite side of the second lip (62) with respect to the first lip (66) and exerts a third radial load on the inner ring lower than the first radial load but greater than the second radial load.
    Type: Grant
    Filed: May 25, 2009
    Date of Patent: October 22, 2013
    Assignee: Aktiebolaget SKF
    Inventors: Fabio Picatto, Davide Zanghi
  • Publication number: 20130255419
    Abstract: A ball screw device or linear motion guide device has a seal member preventing dust and dirt from entering into a movable member of a linear motion guide device and seals out fine dust, dirt or like by surely contacting a seal to a shaft member without providing a large margin to the seal. The seal member includes a body portion mounted to the movable member and a lip portion contacting an outer portion of the shaft member, the lip portion has an oblique surface having an axial section inclining with respect to its axial direction, the body portion has an urging member urging the lip portion in a diameter direction of the shaft member and a reinforcing portion reinforcing the body portion. The urging member is located on the reinforcing portion side than the tip end of the lip portion in the axial sectional shape of the lip portion.
    Type: Application
    Filed: December 9, 2011
    Publication date: October 3, 2013
    Applicant: THK Co., Ltd.
    Inventors: Katsuya Iida, Soshi Miyahara, Hideo Saito, Toshiaki Kadono, Masahiko Yoshino, Tsutomu Togashi, Eri Kameda, Futoshi Nakamura
  • Patent number: 8534572
    Abstract: A riser seal cartridge for an irrigation sprinkler. The cartridge is formed of a rigid self support shell, and a sealing member formed of a resilient material covering the shell in areas which provide the seal. The sealing member includes a first portion which seals the top end of the sprinkler body, a second portion which seals an outer surface of the riser, a third portion which connects the first and second portions, and a fourth portion extending from the third seal portion which provides a seal for the support shell lower end portion. The first seal portion provides a high pressure seal to prevent leakage when the riser is in a fully extended position; and the second seal portion provides a low pressure seal during pressure build-up as the riser is extending.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: September 17, 2013
    Inventor: Carl L. C. Kah, Jr.
  • Publication number: 20130234402
    Abstract: A seal includes at least one sealing profile (1.1, 1.2, 1.3) with at least one sealing lip (2.1, 2.2, 2.3) and at least one hook-shaped claw connector (3.1, 4.2, 3.3, 4.3), which, when viewed in the cross-section of the sealing profile (1.1, 1.2, 1.3), is adjacent to the sealing lip (2.1, 2.2, 2.3).
    Type: Application
    Filed: September 16, 2011
    Publication date: September 12, 2013
    Applicant: CARL FREUDENBERG KG
    Inventor: Roland Fietz
  • Publication number: 20130234403
    Abstract: Assembly for sealing a rotary joint, comprising first and second annular parts (2) arranged concentrically, one part being rotatably arranged relative to the other, at least one circumferential gap (18) between the first annular part (2) and the second annular part (3); wherein the first annular part (2) comprises a convex curvature (8), and the second annular part (3) comprises a convex curvature (9); a sealing element (4) received in the gap (18) and disposed sealingly against the first and second annular parts (2); the sealing element (4) comprising sealing lip pairs (21), each pair being associated with one convex curvature (8, 9), such that two sealing lips (21) embrace each convex profile curvature (8, 9) sealingly thereagainst; wherein the sealing element (4) exhibits axial symmetry relative to one axis of symmetry (6), and one axis of symmetry is inclined relative to a vertical axis (13); and the convex profile curvatures (8, 9) have points protruding toward the sealing element (4), and the points lie
    Type: Application
    Filed: August 5, 2011
    Publication date: September 12, 2013
    Applicant: IMO HOLDING GMBH
    Inventor: Hermann Willaczek
  • Publication number: 20130228978
    Abstract: A sealing device and a sealing structure in which sliding ability is stabilized are provided. A lip tip of a first seal lip (120) includes a first tapered surface (123a) which expands in diameter toward a sealed fluid side (L) and a second tapered surface (123b) which expands in diameter toward an opposite side (A) of the sealed fluid side, the second tapered surface (123b) is provided with a plurality of screw thread protrusions (or screw thread grooves) (124) which move grease (170) in the axial direction while rotating relative to a rotary shaft (21), and each of the plurality of screw thread protrusions (or screw thread grooves) (124) is disposed so as to move the grease (170) toward the opposite side (A) of the sealed fluid side.
    Type: Application
    Filed: February 29, 2012
    Publication date: September 5, 2013
    Applicant: EAGLE INDUSTRY CO., LTD.
    Inventors: Yusaku Nakazono, Masatoshi Itadani, Yuichiro Tokunaga
  • Publication number: 20130175764
    Abstract: An oil seal has a first seal member including a main lip and a first dust lip, and a second seal member installed in a machine outer side of the first seal member. The second seal member integrally has an end surface covering section covering an end surface section of a housing, an outer peripheral insertion section inserted from one side in an axial direction to an outer peripheral surface of the housing and engaged with a stepped engagement section in the outer peripheral surface of the housing so as to prevent the second seal member from coming off from the housing, an inner peripheral insertion section inserted to an inner peripheral surface of the shaft hole in the housing from one side in the axial direction, and a second dust lip slidably coming into close contact with the shaft in the machine outer side of the first dust lip.
    Type: Application
    Filed: March 17, 2011
    Publication date: July 11, 2013
    Applicant: NOK CORPORATION
    Inventor: Kokichi Hamamoto
  • Patent number: 8449201
    Abstract: The invention relates to an element (10) for sealing two parts (2, 3) that can be rotated in relation to one another. Said element comprises at least one first sealing ring (11) consisting of a permanently elastic material, which is fixed to one of the two rotatable parts and comprises at least one sealing lip (21) and at least one second sealing ring (12), which is fixed to the other rotatable part and comprises a strip (19) consisting of another material that runs along its periphery. At least one sealing lip of the first sealing ring lies against said strip.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: May 28, 2013
    Assignee: IMO Holding GmbH
    Inventors: Erich Russ, Hubertus Frank, Hermann Willaczek
  • Patent number: 8403333
    Abstract: A low friction seal for sealing between a shaft and a bore and includes an inner case adapted to be mounted on the shaft. An outer case is adapted to be mounted within the bore. A seal element is mounted to the inner case and includes a base portion attached to the inner case. A membrane extends from the base portion and an axially extending leg extends from the membrane. A seal lip extends from the axially extending leg and sealingly engages a radially extending portion of the outer case. As the shaft rotates, the centrifugal forces tend to cause the membrane to flex and the torque loads applied by the dynamic seal are reduced to the point that the seal lip can lift off and apply zero torque load.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: March 26, 2013
    Assignee: Freudenberg-NOK General Partnership
    Inventors: Alexander Berdichevsky, David Sakata, Jianbin Jiang
  • Patent number: 8371586
    Abstract: A bearing seal includes a metal core having a radially outer portion engaged in an inner seal groove of a bearing outer race. The core includes a bent portion engaged in the seal groove, a radially outer flange extending inwardly from an end of the bent portion located inside the bearing, a tapered tubular portion having a large-diameter end thereof connected to a small-diameter end of the outer flange and a small-diameter end thereof located axially outwardly of its large-diameter end, and a radially inner flange extending inwardly from the small-diameter end of the tubular portion. A rubber seal is fixed to an inner surface of the metal core that faces the interior of the bearing. The rubber seal includes a thick-walled portion having an inner radial step, and formed with three lips that elastically contact the inner race outer surface. The thick-walled portion includes a small-diameter thick-walled portion.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: February 12, 2013
    Assignees: NTN Corporation, Nakanishi Metal Works, Co., Ltd.
    Inventors: Yoshitaka Okaji, Eiichi Urakami