Having Installation, Removal, Assembly, Disassembly, Or Repair Feature Patents (Class 277/551)
  • Patent number: 7950670
    Abstract: A seal assembly having a seal bumper wall with a series of pyramid shaped formations lying on the bumper wall. The formations cause their apex portion to wear down rapidly in use, while the remainder of the pyramids remain and act as slingers and/or produce a convection effect to reduce temperature along the sealed area. In another embodiment, there are two each pyramid shaped formations located on each of several thrust bumpers, which are held in position by a retainer.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: May 31, 2011
    Assignee: SKF USA, Inc.
    Inventor: Linas L. Maskaliunas
  • Patent number: 7942424
    Abstract: For easier separation and sorting by material of constructing parts and better assembly retainability among the constructing parts and installing workability, a lip type seal has a elastic material-made first lip seal member (11) including a cylinder portion (12) fitted into a shaft hole (72) and a first seal lip (14) arranged at a sealed fluid side (A) and contacted with a shaft (73), a resin-made second lip seal member (21) including a second seal lip (23) arranged at an atmospheric air side (B) and contacted with the shaft (73), a metal-made spacer ring (31) arranged at the sealed fluid side (A) of the second lip seal member (21), and a metal-made retaining ring (41) retaining the spacer ring (31) and the second lip seal member (21), and these parts are assembled without bonding, so that the retaining ring (41) is fitted to the first lip seal member (11).
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: May 17, 2011
    Assignee: Eagle Industry Co., Ltd.
    Inventors: Takao Shimomura, Hideki Tomoto, Masamitsu Sanada
  • Patent number: 7938405
    Abstract: A radial shaft sealing ring, especially for use together with a CO2 containing pressure medium, comprises a membrane body (1) and a supporting body (2). A centering element (5) having a radially outer edge (6) is disposed on the supporting body (2) and is not covered by the membrane body (1). The membrane body (1), on its radially inner end, comprises a tilted sealing lip (11) which faces away from the supporting body (2). The supporting body (2) has an axial bore for the shaft (8) and, opposite the sealing lip (11), a supporting face (13) which slopes towards the wall (12) of the bore. The invention is characterized in that the centering element (5), when the radial shaft sealing ring is fitted in a bearing house (4), can be contacted with the interior of the bearing housing (4) in a press fit and that the angle (?) between the supporting face (13) and the wall (12) of the bore of the supporting body (2) ranges between 45° and 55° in a central plane which includes the axis of the radial shaft sealing ring.
    Type: Grant
    Filed: April 13, 2006
    Date of Patent: May 10, 2011
    Assignee: VR-Dichtungen GmbH
    Inventor: Siegmar Kreutzer
  • Patent number: 7931125
    Abstract: A shaft seal assembly for use with a reciprocating or rotating shaft includes a shaft seal, a lubricant-storing ring, and a retainer. The retainer and ring can be formed as a subassembly and then combined with a shaft seal. The seal includes an annular body portion, a first sealing lip portion, and a first pocket portion. The first sealing lip portion has a substantially uniform axial dimension and is adapted to sealingly engage a shaft. The first pocket portion includes a plurality of pockets, each having an opening toward the first sealing lip portion. The plurality of pockets are each adapted to collect a working fluid when the shaft axially displaces in a first direction and to dispense the working fluid when the shaft axially displaces in a second direction. The assembly provides a lubricated shaft and seal that improves the effective life of the shaft seal.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: April 26, 2011
    Assignee: Freudenberg-NOK General Partnership
    Inventors: Michael D. Downes, Robert P. LaPlante
  • Publication number: 20110091143
    Abstract: A seal component (100, 200) having a triple-lip configuration for sealing against a moving surface, such as the inner ring race surface (12, 12?) of a spherical plain bearing (14, 14?). The triple-lip configuration incorporates a pair of outward inclined seal lips (102, 202, 104, 204) for providing protection from external contaminates, and a third inwardly inclined seal lip (106, 206) which is orientated to provide lubricant or grease retention within the sealed bearing (14, 14?). The size and configuration of the third seal lip (106, 206) is selected to minimize surface friction and to avoid seal lip inversion during oscillatory motion of the bearing components during use. A retention surface (110a, 210) is disposed to abut against the outer ring race surface (10b, 10b) to resist roll-out displacement of the seal component (100, 200) during use.
    Type: Application
    Filed: May 28, 2009
    Publication date: April 21, 2011
    Applicant: THE TIMKEN COMPANY
    Inventors: Timothy P. Murphy, Liviu V. Anton, Ioana C. Savin, Richard Borowski, Mark Esposito
  • Patent number: 7926814
    Abstract: A seal assembly including first and second rigid shields and a sealing member carried by the first shield and having a first and second annular sealing lip in sealing engagement with respective sliding surfaces of the second shield. The first sealing lip carries in a radial seat thereof a toroidal spring exerting a radially eccentric thrust on the first sealing lip with respect to an elastic hinge defined by a common root portion of the lips, having a center of rotation located along a line extending through a V-shaped sealing edge of the first lip and forming a 20° to 60° angle with a radial plane. The root portion is defined between two opposite annular recesses having a U-shaped cross-section and bottom walls facing each other, substantially aligned along the aforementioned line.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: April 19, 2011
    Assignee: Aktiebolaget SKF
    Inventor: Claudio Foti
  • Patent number: 7926817
    Abstract: A sealing apparatus includes a slinger which includes a cylindrical portion, and radially-extending portions and provided respectively at axially-opposite ends of the cylindrical portion and an elastic member which includes a base portion fixed to a surface of an inner radially-extending portion of a radially-extending core metal member, and a lip portion connected with the base portion. The lip portion is formed by a first axial lip contacting one radially-extending portion of the slinger and a second axial lip contacting the other radially-extending portion of the slinger. The elastic member is formed such that in an axial cross-section, the distance between a cylindrical portion-opposing surface of the elastic member radially opposed to the cylindrical portion and the cylindrical portion is increasing generally uniformly axially outward.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: April 19, 2011
    Assignee: JTEKT Corporation
    Inventors: Kazutoshi Yamamoto, Masahiro Tabata
  • Patent number: 7926816
    Abstract: A sealing device with a tone wheel formed to seal between a fixed side member and a rotating side member. A slinger comprises a fitting cylindrical part fitted to the rotating side member and a flanged part radially extendedly formed at one end part of the fitting cylindrical part positioned on the outer side of a sealed portion. The outer surface of the flanged part positioned on the outer side of the sealed portion comprises a tone wheel stuck surface on which the tone wheel formed of a magnetic ring is stuck integrally with each other and an extended surface on which the tone wheel is not stuck and extended to the fixed side member.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: April 19, 2011
    Assignee: Uchiyama Manufacturing Corp.
    Inventors: Masanori Shibayama, Hiroshi Seno
  • Patent number: 7926815
    Abstract: The invention relates to a sealing arrangement comprising at least one seal and a spinning ring. Said spinning ring is provided with a first hollow cylindrical section, a second hollow cylindrical section in the first section which is disposed concentric to the first section, and a disk-shaped ring section that extends at an angle to the first section. The first section and the second section are embodied monolithically on the spinning ring, at least one elastic sealing lip of the seal resting against the first section.
    Type: Grant
    Filed: October 8, 2005
    Date of Patent: April 19, 2011
    Assignee: Schaeffler KG
    Inventors: Peter Niebling, Ernst Masur, Jens Heim
  • Patent number: 7909333
    Abstract: A seal assembly has an inner wear sleeve with an axially extending tubular body. A flange extends radially outwardly from the body. An outer seal component has an axially extending tubular outer wall with a flange extending radially inwardly therefrom to support at least one dynamic seal lip in sealing engagement with the inner sleeve body. The outer seal component includes an annular retention lip disposed axially outwardly of the wear sleeve flange. The retention lip extends radially inwardly of a radially outer edge of the flange and is deflectable in an axial direction to enable the flange of the wear sleeve to be forced axially thereby during assembly, whereupon the retention flange returns to its non-deflected position to inhibit removal of the wear sleeve in the reverse axial direction. The annular retention flange has at least one axially extending debris expulsion slot for the escapement of debris.
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: March 22, 2011
    Assignee: Federal-Mogul Worldwide, Inc.
    Inventor: Gerald A. Greca
  • Patent number: 7900357
    Abstract: A seal installation tool assembly and method of using same to install a front seal within a front cover member of an engine. The seal installation tool assembly includes a seal installation sleeve, a threaded fastener, and a washer member. The seal installation sleeve is adapted to receive a front seal and pilots on a drive portion of a crankshaft within the engine. The threaded fastener operates to draw the front seal within the front cover member. Upon contact between the front cover member and the seal installation sleeve, the front seal is properly installed.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: March 8, 2011
    Assignee: GM Global Technology Operations LLC
    Inventor: Jeffrey N. Hopper
  • Publication number: 20110037233
    Abstract: A sealing assembly (100) for at least partially sealing a gap (102) leading to a void (104) between first and second members (110, 120), the first and second members forming part of a gas-washed surface of a jet engine, wherein the sealing assembly comprises: a bridging portion (130) couplable to one of the first and second members and movable to engage the other of the first and second members so as to block off the void between the first and second members from the gas-washed surface.
    Type: Application
    Filed: July 13, 2010
    Publication date: February 17, 2011
    Applicant: ROLLS-ROYCE PLC
    Inventor: Cedric B. HARPER
  • Patent number: 7878088
    Abstract: A sealing device provided to a joint section of a robot. The sealing device includes overlapped seal portions having a multi-stage configuration, provided for a driving mechanism incorporated into the joint section. The overlapped seal portions include a first seal portion including a first contact seal element sealing a first inter-member gap defined adjacent to a lubricant retaining section provided in the driving mechanism; and a second seal portion arranged outside the first seal portion and including a second contact seal element sealing a second inter-member gap defined in a circumferential wall of the joint section, the circumferential wall defining an accommodation space for accommodating the driving mechanism.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: February 1, 2011
    Assignee: Fanuc Ltd
    Inventors: Toshinari Tamura, Hidenori Kurebayashi, Atsushi Aizawa, Yasuyoshi Tanaka, Katsumi Fujimoto
  • Patent number: 7862048
    Abstract: A gasket for a valve in an internal combustion engine is provided with a support element having a tubular configuration according to an axis and coaxially mounted on the valve. An elastically deformable element is interposed between the support element and the valve. The support element includes a first portion elongated according to the above mentioned axis, and a second portion extending from the first portion in a direction transversal to the axis, at least partially housed in an annular seat of the elastically deformable element and having its radially outermost end connected to the first portion itself. The support element comprises a third portion extending from the radially innermost end of the second portion and folded on the second portion itself so as to generate, in the folding area, a rounded edge cooperating with the annular seat of the elastically deformable element.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: January 4, 2011
    Assignee: Corcos Industriale S.a.s. di Freudenberg & Cosso S.r.l.
    Inventor: Francesco Scarano
  • Publication number: 20100322545
    Abstract: A sealing arrangement for sealing rolling bearings. The sealing arrangement has a carrier ring for carrying an elastic part which has a radial sealing lip, and therefore a second ring which is movable relative to the carrier ring. The second ring has a cylindrical part provided as a radial seat for the radial sealing lip. A first installation aid is integrally formed on the radial sealing lip and prevents the radial sealing lip from becoming fixed on a second ring, such as, for example, a spinning ring, by ensuring that the radial sealing lip expands at the right time.
    Type: Application
    Filed: June 16, 2010
    Publication date: December 23, 2010
    Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
    Inventors: Peter NIEBLING, Florian KOENIGER, Wolfgang SEIDL, Frank EICHELMANN, Peter PARTHEYMUELLER
  • Patent number: 7828299
    Abstract: Systems and methods associated with a fluid-activated shaft seal are provided. The systems, which feature multiple components, include a support component defining an exterior surface, a carrier component including an interior surface to slideably engage the exterior surface of the support component, and a seal disposed relative to the carrier component. The seal includes a lip portion and a fluid-responsive gel material that expands when exposed to a fluid to urge the lip portion towards or into contact with a shaft. The gel material contracts in the absence of the fluid to form or increase the size of a gap between the shaft and the lip portion. Methods of assembling and installing such a system are also described.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: November 9, 2010
    Assignee: MIDE Technology Corporation
    Inventors: Marthinus van Schoor, David Gilbert, Andrew Cutler, Steven Klepper
  • Patent number: 7823886
    Abstract: The invention relates to a sealing element at least comprising a housing area, at least one dynamically active sealing area and at least one statically active sealing area which at least partially interacts with the housing area. The invention is characterized in that the static sealing area is at least partially laminated with a hardenable material containing a predetermined number of friction-reducing elements.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: November 2, 2010
    Assignee: Federal Mogul Sealing Systems Bretten GmbH
    Inventors: Frank Warnecke, Xiaoling Jin
  • Patent number: 7806411
    Abstract: A radial seal assembly for providing a seal between a shaft and a static surface includes a gland forming a housing for mounting the seal assembly to the stationary equipment, a sleeve mounted to an movable with a shaft extending from the stationary equipment and a sealing component housed between the gland and sleeve for sealing therebetween. The sealing component includes at least one axially forwarding extending seal surface and at least one axially rearward extending seal surface for providing sealing under both normal and reverse pressure conditions. The sleeve may include a tapered axially inner tip having a double lead-in angle to facilitate assembly while minimizing the length of the seal assembly.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: October 5, 2010
    Assignee: A.W. Chesterton Company
    Inventor: Michael P. Grimanis
  • Patent number: 7798496
    Abstract: A rotary shaft sealing assembly in which a first fluid is partitioned from a second fluid in a housing assembly having a rotary shaft located at least partially within. In one embodiment a lip seal is lubricated and flushed with a pressure-generating seal ring preferably having an angled diverting feature. The pressure-generating seal ring and a hydrodynamic seal may be used to define a lubricant-filled region with each of the seals having hydrodynamic inlets facing the lubricant-filled region. Another aspect of the sealing assembly is having a seal to contain pressurized lubricant while withstanding high rotary speeds. Another rotary shaft sealing assembly embodiment includes a lubricant supply providing a lubricant at an elevated pressure to a region between a lip seal and a hydrodynamic seal with a flow control regulating the flow of lubricant past the lip seal.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: September 21, 2010
    Assignee: Kalsi Engineering, Inc.
    Inventors: Lannie L. Dietle, John E. Schroeder, Manmohan S. Kalsi, Patricio D. Alvarez
  • Patent number: 7793939
    Abstract: A seal cover includes a cylindrical part which is fixed to an outer peripheral surface of an axle, a flange part which is opposed to an end surface in an axial direction of a housing, interposing a small clearance, and a deflector part which is opposed to an outer peripheral surface of the housing, interposing a small clearance. A passage through which muddy water or the like arrives at an annular clearance from an exterior of a vehicle can be formed of the small clearances, and the passage can be made long. Because an overlapping amount between the deflector part and the outer peripheral surface of the housing can be secured, the muddy water or the like which has been splashed by a wheel and flowing from an outer peripheral side of the housing to an inner peripheral side can be made difficult to intrude into a space.
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: September 14, 2010
    Assignee: JTEKT Corporation
    Inventors: Tetsuya Ishikawa, Masaru Deguchi, Youichi Tsuzaki
  • Patent number: 7775770
    Abstract: A flexible, resilient seal protects a bearing in a pitch joint of a helicopter blade assembly from contaminants. The seal includes a flexible, resilient body having a first end bonded to a stationary portion of the joint, and a second end biased into sealing engagement with a displaceable portion of the joint. The body includes an intermediate bellows section surrounding the bearing that expands and contracts to accommodate displacement between the stationary and movable portions of the joint. The second end of the seal includes a lip that rubs on a sacrificial wear layer formed on the second portion of the joint.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: August 17, 2010
    Assignee: The Boeing Company
    Inventor: Steven R. Carbaugh
  • Patent number: 7770897
    Abstract: A dynamic shaft seal assembly is provided including a dynamic seal for engaging a rotary shaft. The dynamic seal includes a base portion that is mounted within a casing and has an axially extending barrel portion extending from a radially inner end of the base 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 stiffening bead reduces the seal's propensity for “bell mouthing” while the axially extending barrel portion provides improved shaft followability for the dynamic seal.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: August 10, 2010
    Assignee: Freudenberg-NOK General Partnership
    Inventor: Alexander Berdichevsky
  • Patent number: 7770896
    Abstract: A sealing assembly including a sealing member made of elastomeric material and PTFE; a supporting armature; and an annular L-shaped shield cooperating, in use, with the sealing member. The armature has a sleeve portion and a radial flange portion partly supporting a radial portion of the sealing member, projecting towards the axis of symmetry and made of elastomeric material with no supporting armature. The radial portion increases in axial size towards the axis of symmetry, and supports, on its free end, a sleeve made of PTFE, the sleeve having a cylindrical first end portion projecting axially, and a conical second end portion projecting axially on the opposite side to and by a greater amount than the first end portion to form an elastically deformable axial sealing lip extending, in undeformed conditions, farther away from the axis of symmetry as it comes away from the flange portion.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: August 10, 2010
    Assignee: Aktiebolaget SKF
    Inventor: Claudio Foti
  • Patent number: 7753376
    Abstract: There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: July 13, 2010
    Assignee: Nok Corporation
    Inventors: Yosuke Kondo, Yasuaki Tanabe, Katsutoshi Ishioka, Sosuke Ito, Shinji Nagasawa, Junichi Nakayama, Masatoshi Okada
  • Patent number: 7731200
    Abstract: A seal member with its base end connected to a metal core has three seal lips. The thickness of the tip end of the intermediate seal lip in the intermediate position is d1, and the thickness of the base end is d2. The thickness of the tip end of the innermost inner seal lip is D1 and that thickness of the base end is D2. In this case, at least part of the base end of the intermediate seal lip and inner seal lip has its thickness regulated to be 0.2·d1?d2?0.8·d1, and 0.5·D1?D2<D1. The tip edge of the inner seal lip is fitted onto the outer peripheral surface of the radially inside cylindrical portion of a slinger with substantially zero interference. Consequently, even if the slinger and metal core are displaced relative to each other, excellent seal performance is secured while increase of torque is inhibited.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: June 8, 2010
    Assignee: NSK Ltd.
    Inventors: Masahito Matsui, Kinji Yukawa
  • Patent number: 7717432
    Abstract: There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: May 18, 2010
    Assignee: NOK Corporation
    Inventors: Yosuke Kondo, Yasuaki Tanabe, Katsutoshi Ishioka, Sosuke Ito, Shinji Nagasawa, Junichi Nakayama, Masatoshi Okada
  • Patent number: 7712745
    Abstract: A unitized pinion seal assembly has a seal portion and a sleeve portion that are assembled in an interference fit relationship. The unitized pinion seal assembly is assembled to a carrier/bearing cage and an axle companion flange with proper spacing between non-sealing components, and without a spacer mounted between the two portions.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: May 11, 2010
    Assignee: Freudenberg-NOK General Partnership
    Inventor: Keith Clark
  • Patent number: 7694976
    Abstract: To reduce an installing space and simplify a mounting structure of a sensor (40) of a rotary encoder, a sealing device with a sensor has a retainer (10) having a fitting tube section (11) and an installation flange section (12) expanding outside thereof and fixed to an engine block (2), and a sealing device body (20) fitted to the fitting tube section (11) and slidably contacted with an outer surface of the crank shaft (4), a sensor (40) detecting a rotation of a pulsar ring (30) rotating together with the crank shaft (4) is attached to a sensor installation section (13) in the installation flange section (12), and a pulsar body (32) of the pulsar ring (30) is formed in a cylindrical shape and extends in a circumferential direction coaxial with the fitting tube section (11) between the fitting tube section (11) and the sensor installation section (13).
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: April 13, 2010
    Assignee: NOK Corporation
    Inventor: Hiroki Matsui
  • Patent number: 7686308
    Abstract: Systems and methods associated with a fluid-activated shaft seal are provided. The system includes a housing and a seal disposed relative to the housing. The method reduces flow of a fluid between the shaft and the housing. The method involves installing the housing in an opening relative to the shaft and locating the seal relative to the housing. The seal includes a gel material that expands when exposed to a fluid. The seal reduces flow of the fluid through a gap between the housing and the shaft. Advantages of the system and method include reduced wear to the seal due to friction because the seal does not engage the shaft in the absence of a fluid. The seal engages the shaft in the presence of a fluid. Sealing quality is improved by increasing the pressure differential acting on the gel material. In some embodiments, the seal includes a lip portion.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: March 30, 2010
    Assignee: MIDE Technology Corporation
    Inventor: Marthinus C. Van Schoor
  • Patent number: 7681888
    Abstract: A sealing system for sealing high liquid pressure and containing a wiper lip in either of two forms. The light pressure seal includes a seal casing, a seal body including a lip seal, a snap ring and a plastic back-up ring, and the wiper lip seals on either a radial or an axial surface. The casing may have radial and axial flanges or a radial flange only. The space between the two seals may be filled with grease.
    Type: Grant
    Filed: February 15, 2006
    Date of Patent: March 23, 2010
    Assignee: SKF USA Inc.
    Inventor: Tsuyoshi Kurosawa
  • Patent number: 7677577
    Abstract: To improve performance without increasing size, a sealing device comprises a seal body (6) sealing a clearance (5) between the periphery of the shaft hole (3) of a housing (2) and a shaft (4) inserted into the shaft hole (3) and the sound insulating seal (7) insulating sound transmitted through the clearance (5), the seal body (6) comprises a bellows part (10) between a mounting part (8) fitted to the housing (2) and a seal lip part (9) contacting with the shaft (4), the sound insulating seal (7) comprises a sound insulating member (20) disposed at the inner peripheral side of the mounting part (8), and the sound insulating member (20) is held to the seal body (6) in the state of contacting with the mounting part (8) at its outer peripheral part (20a) and with the seal lip part (9) at its inner peripheral part (20b).
    Type: Grant
    Filed: October 27, 2005
    Date of Patent: March 16, 2010
    Assignee: NOK Corporation
    Inventors: Go Kanzaki, Akira Kamichika, Fuminori Kataoka, Tokuhiro Murakami
  • Publication number: 20100052267
    Abstract: A sealing assembly for a shaft includes a sealing component, a first ring, a second ring, and at least one energizer. The first ring is annularly disposed about the shaft, the first ring having at least one first protuberance interfittable with the sealing component. The second ring is annularly disposed about the shaft in facing opposition to the first ring, the second ring having at least one second protuberance interfittable with the sealing component. The at least one energizer energizes the seal component, the at least one energizer being adjacent the at least one first protuberance or the at least one second protuberance.
    Type: Application
    Filed: August 28, 2008
    Publication date: March 4, 2010
    Inventors: Larry J. Castleman, Gregory D. Jones, Brian Bowen
  • Patent number: 7658386
    Abstract: The present invention discloses a seal and a method of sealing dynamic shaft applications. The seal comprises an inner portion, an outer portion, a faceplate, and at least one flexible member located between the inner and outer portions. The method comprises providing a dynamic shaft assembly containing a bore for receiving a seal, providing a unitized seal, and placing the unitized seal on the shaft, thus sealing the assembly so that lubricants may not escape, and foreign material may not enter. The unitized seal can provide permanently lubricated sealed bearings in severe service conditions such as rollers and idlers of track-driven vehicles and agricultural equipment.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: February 9, 2010
    Assignee: Freudenberg-NOK General Partnership
    Inventor: Michael R. Oldenburg
  • Patent number: 7654537
    Abstract: A gasket for a valve in an internal combustion engine is provided with a support element having a tubular configuration according to an axis and coaxially mounted on the valve. An elastically deformable element is interposed between the support element and the valve. The support element includes a first portion elongated according to the above mentioned axis, and a second portion extending from the first portion in a direction transversal to the axis, at least partially housed in an annular seat of the elastically deformable element and having its radially outermost end connected to the first portion itself. The support element comprises a third portion extending from the radially innermost end of the second portion and folded on the second portion itself so as to generate, in the folding area, a rounded edge cooperating with the annular seat of the elastically deformable element.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: February 2, 2010
    Assignee: Corcos Industriale S.a.s. di Freudenberg & Cosso S.r.l.
    Inventor: Francesco Scarano
  • Patent number: 7651102
    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: October 15, 2004
    Date of Patent: January 26, 2010
    Assignee: Carl Freudenberg KG
    Inventors: Martin Heldmann, Gunter Hintenlang, Uwe Henrich
  • Patent number: 7648144
    Abstract: In a sealing device of the present invention, a support ring is fitted in an annular recessed part formed on the inner peripheral surface of a seal lip part independently of a reinforcement ring to support the seal lip part from the inner peripheral side, and the support ring is supported axially by a reinforcement ring via an interposed part. Thereby, when a rotating shaft is inserted into the seal ring, a contact area between a seal part and the rotating shaft can be made appropriate, and when a high pressure is applied to the seal lip part, an increase in contact area between the seal part and the rotating shaft can be suppressed within an appropriate range and the seal part becomes able to follow the eccentricity of the rotating shaft.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: January 19, 2010
    Assignee: Eagle Industry Co., Ltd.
    Inventor: Masamitsu Sanada
  • Publication number: 20090322038
    Abstract: A gap 6 between a stationary component 2 and a rotating component 4 is sealed by means of a leaf seal comprising an array of leaves 8, 9. The leaves 8, 9 are disposed in pairs, comprising a higher curvature leaf 8 and a lower curvature leaf 9 which contact each other resiliently at their tips 12. The contact at the tips 12 provides a damping effect. As a result, the tips 12 of the leaves 8, 9 are relatively stable when subjected to an air flow F, enabling damaging flutter to be suppressed.
    Type: Application
    Filed: April 1, 2009
    Publication date: December 31, 2009
    Applicant: ROLLS-ROYCE PLC
    Inventor: Christopher Wright
  • Patent number: 7597410
    Abstract: An endless track chain device, comprises first and second links and a track chain joint. The track chain joint comprises a radial seal unit that inhibits ingress of debris between a bushing of the joint and the second link into a region between a pin of the joint and the bushing.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: October 6, 2009
    Assignee: Deere & Company
    Inventors: Patrick John Mulligan, Matthew Banowetz
  • Patent number: 7594664
    Abstract: A seal assembly having a seal bumper wall with a series of pyramid shaped formations lying on the bumper wall. The formations cause their apex portion to wear down rapidly in use, while the remainder of the pyramids remain and act as slingers and/or produce a convection effect to reduce temperature along the sealed area. In another embodiment, there are two each pyramid shaped formations located on each of several thrust bumpers, which are held in position by a retainer.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: September 29, 2009
    Assignee: SKF USA Inc.
    Inventor: Linas L. Maskaliunas
  • Publication number: 20090189357
    Abstract: A dynamic shaft seal assembly has inner and outer cases that are clamped together to secure a seal element therebetween for dynamic sealing about a rotatable shaft. The inner case is formed with integral pull tabs that are engageable by a seal removal tool to facilitate the removal of the seal assembly from a bore in which the seal assembly is installed.
    Type: Application
    Filed: January 25, 2008
    Publication date: July 30, 2009
    Inventor: Christopher Madigan
  • Publication number: 20090174151
    Abstract: A sealing device comprises a stationary-side installation ring (11) fixed to an outer stationary-side member (201), a rotation-side installation ring (12) fixed to an inner rotation-side member (202), a stationary-side lip (13) provided on the stationary-side installation ring (11) to be slidably in contact with the rotation-side installation ring (12) by its tip, rotation-side lips (14, 15) formed on the rotation-side installation ring (12) to be slidably in contact with the stationary-side installation ring (11) by their tips, a pulsar ring (17) formed of a synthetic resin or rubber-like elastic material mixed with magnetic powder on the rotation-side installation ring (12) and multipolar magnetized, and a collar portion (17a) formed on an outer periphery of the pulsar ring (17) at the outer side than the rotation-side lips (14, 15) to closely face the stationary-side member (201) or the stationary-side installation ring (11), thereby an excellent sealing ability being given.
    Type: Application
    Filed: March 15, 2007
    Publication date: July 9, 2009
    Applicant: NOK Corporation
    Inventor: Naoto Kobayashi
  • Patent number: 7549647
    Abstract: The invention relates to a sealing device for roller bearings, comprising a journal seal (4), which is arranged upstream on the roller-ball side of the annular seal (8) which is connected in a rigid manner to an annular projection (7) of the bearing housing (5). The sealing lip (18) of the sealing device is applied to the front side (10) of the roller (1) by means of a sealing contact. The aim of the invention is to improve the sealing device in such a manner that the sealing lip of the annular seal is barely impinged upon by cooling means mixed by impurities, making it long lasting and ensuring that no undesired water can penetrate into said outlet.
    Type: Grant
    Filed: November 11, 2004
    Date of Patent: June 23, 2009
    Assignee: SMS Demag AG
    Inventors: Konrad Roeingh, Karl Keller, Rolf Hücker
  • Patent number: 7513506
    Abstract: There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: April 7, 2009
    Assignee: Nok Corporation
    Inventors: Yosuke Kondo, Yasuaki Tanabe, Katsutoshi Ishioka, Sosuke Ito, Shinji Nagasawa, Junichi Nakayama, Masatoshi Okada
  • Patent number: 7487848
    Abstract: A multi-seal sealing assembly with multiple seals so that when one seal wears out another can be moved into sealing position; and a top drive system for wellbore operations with such a sealing assembly; the sealing assembly in one aspect having a seal carrier movable to move at least one secondary seal into sealing position when a primary seal has worn out.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: February 10, 2009
    Assignee: Varco I/P, Inc.
    Inventors: Larry Wells, Svein Stubstad, Howard Ervin, James D. Brugman, Paul Conover
  • Patent number: 7478815
    Abstract: A high-pressure sealing arrangement is provided for sealing a gap (26) between two concentric machine parts (4, 5) which can be moved relative to each other, of which a first machine part (4) comprises a groove (3) and a second machine part (5) comprises an outer peripheral surface (7) opposite the groove (3). A sealing ring (1) of an extrusion-resistant material and a tensioning ring (2) of an elastomeric material are provided in the groove (3). A shaped section of the sealing ring (1) on the low-pressure side can be deflected towards the outer peripheral surface (7) under fluid pressure load. When the pressure decreases, the pressure-dependent deflection of the sealing ring (1) automatically returns towards the initial, unpressurized state of the sealing ring (1).
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: January 20, 2009
    Assignee: Trelleborg Sealing Solutions Germany GmbH
    Inventor: Holger Jordan
  • Patent number: 7461907
    Abstract: An improved seal/bearing arrangement employs an O-ring type seal which has segmented fingers. The seal ring has a recess which is sized to mate with a corresponding projecting lug of a bore use, for example, in brake actuator mechanisms. The seal ring can be made from synthetics such as polyamides and polyethylenes. The fingers are so arranged that locking of the seal rings in the bore occurs with insertion of a sliding, oscillating and/or rotating shaft or the like through the rings.
    Type: Grant
    Filed: July 18, 2005
    Date of Patent: December 9, 2008
    Assignee: Bendix Spicer Foundation Brake LLC
    Inventors: Ronald S. Plantan, Kenneth E. Scheckelhoff
  • Patent number: 7461904
    Abstract: A bicycle hub assembly includes a hub shell, a freewheel body and a sealing structure there between. The sealing structure includes a seal that has a lip that extends in an axial direction to engage a radially extending surface on the sealing plate. In one embodiment, the seal is installed in a seal retaining portion formed on the hub shell. In another embodiment, the seal is installed on the freewheel and contacts a radially extending surface on the hub shell.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: December 9, 2008
    Assignee: Shimano Inc.
    Inventors: Takanori Kanehisa, Atsuhiro Nishimura
  • Patent number: 7458586
    Abstract: The invention relates to a housing sealing cover (1, 10, 15, 18) for detachable liquid-tight fixing to an internal combustion engine, comprising an add-on piece (24) which is firmly connected to the housing, extending through the cover when in a mounted position. Said cover consists of a metallic or polymer support element (2) made of a single layer and is provided with an opening (25) for the add-on piece (24), wherein a seal (23) is arranged in said opening. Said seal comprises a sealing lip(3, 11) extending axially on the edge (26) of the opening (25) and a sealing lip (5, 12, 16, 19) extending radially in relation to the seal of the add-on piece (24). The radially extending sealing lip (5, 12, 16, 19) is retained in the opening (25) in an angularly and radially displaceable manner with respect to the support element (2).
    Type: Grant
    Filed: February 7, 2003
    Date of Patent: December 2, 2008
    Assignee: Federal-Mogul Sealing Systems Bretten GmbH & Co. KG
    Inventor: Ralf Salameh
  • Publication number: 20080284110
    Abstract: A radial shaft seal is provided for accommodating large radial offset of the shaft relative to a housing. The seal includes an annular retainer insert provided for engaging the seal to a fixed housing. An annular elastomeric seal body is molded to the retainer insert and includes a flexible axially extending portion extending from an inner surface of the retainer insert. A seal portion extends from a radially inward end of the flexible portion and includes first and second seal lips and an elastomeric bearing surface disposed between the first and second sealing lips. The bearing surface includes a plurality of raised pads adapted to engage the shaft. The pads each include a rounded edge on lateral sides thereof for encouraging the creation of a lubricating film between the pads and shaft. The pads are lubricated by a lubricant disposed in a lubricant chamber disposed between the first and second seal lips.
    Type: Application
    Filed: May 15, 2007
    Publication date: November 20, 2008
    Applicant: FREUDENBERG-NOK GENERAL PARTNERSHIP
    Inventor: John C. Dahlheimer
  • Patent number: RE42061
    Abstract: A sealing device for sealing off an opening between a shaft and a grease-lubricated split bearing housing comprises two halves divided by a diametrical cut and each having a main body arranged in a circumferential groove in the bearing housing opening. The sealing device is provided with sealing lips spaced apart from each other and forming an intermediate grease reservoir, and reinforcing portions arranged between the main seal body and the sealing lips to facilitate sealing engagement between the sealing lips and a shaft when an upper bearing housing half arranged with the upper seal half is mounted onto the shaft while the shaft is resting in a lower bearing housing half arranged with the lower seal half.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: January 25, 2011
    Assignee: SKF Mekan AB
    Inventors: Henrik Olsson, Jörgen Stendahl