Peripheral Radially Sealing Flexible Projection (e.g., Lip Seal, Etc.) Patents (Class 277/549)
  • Patent number: 11536372
    Abstract: A sealing device includes an elastic body configured to seal an annular gap between an inner member and an outer member in order to prevent a leak of an object through the annular gap. The elastic body includes an annular main body portion including a first end portion and a second end portion opposite to each other and being to be disposed in the annular gap with the first end portion being closer to the object than the second end portion, a seal lip portion extending from the first end portion and being to be in contact with the inner member, a flange portion extending outwardly from the second end portion and including a first side and a second side opposite to each other, a side lip portion extending from the second end portion in a direction away from the first end portion, and a projecting portion extending from the second side and circumferentially about the annular main body. The first side is to be closer to the object than the second side and to be in contact with the outer member.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: December 27, 2022
    Inventor: Naoki Meguro
  • Patent number: 11448320
    Abstract: A sealing device is located between an inner member and an outer member that rotate relative to each other. The sealing device includes a tubular part that is to be mounted on a cylindrical end portion of the outer member, an annular part connected to an end of the tubular part and having a portion located radially inside the end portion of the outer member, at least one lip extending from the annular part toward the inner member. Each of the annular part and the tubular part includes an elastic part and a rigid part. At least one of an upper surface of the annular part that is opposite to the tubular part and a lower surface of the tubular part that is opposite to the annular part is formed of the elastic part. Multiple protrusions are formed on at least one of the upper surface of the annular part and the lower surface of the tubular part, the protrusions protruding along an axial direction of the sealing device.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: September 20, 2022
    Inventor: Masahiro Seki
  • Patent number: 11359722
    Abstract: A sealing member is provided, including a plurality of nodes and a plurality of antinodes. Each sealing member can be rotated to expose nondamaged lobes for sealing, and prevents the sealing member from falling out of the lobed groove. A chamber is provided, including a groove that the sealing member is placed in. A method of rotating and placing the sealing member is provided, including a rotation to expose nondamaged portions of the sealing member.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: June 14, 2022
    Inventors: Shagun P. Maheshwari, Yao-Hung Yang, King F. Lee, Andrew Yu, Aniruddha Pal, Tom K. Cho, Chien-Min Liao
  • Patent number: 11143307
    Abstract: A dual function coating on a counterface of a seal. The dual function provides having a low friction and being hydrophobic. This is achieved by chemically modifying a low friction coating. Gaps are included, primarily on the exterior side of a seal, one side being coated with the modified low friction coating on a counterface and the other side with a hydrophobic or omniphobic material on a seal body. The material can be in the form of a coating, film, strip, or ring depending on application, and be coated, glued, fused, mechanically attached or by any other suitable method, attached to the seal body. The gap should preferably be in the order of 0.2 to 1 mm wide, thus creating ‘reverse-capillary’ function where water cannot pass all the way through the gap.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: October 12, 2021
    Assignee: Aktiebolaget SKF
    Inventor: Warrick Allen
  • Patent number: 11022178
    Abstract: A sealing device includes a seal member and a slinger. The slinger has a slinger fixing part, a first radial part, a first axial part, a second radial part, and a second axial part facing a seal fixing part of the seal member in a radial direction across a first clearance. The seal member has a large-diameter part facing, in an axial direction, an end of the second axial part on the other side in an axial direction across a second clearance. An outer circumferential surface of the large-diameter part and an outer circumferential surface of the second axial part are included in a flow passage surface of a continuous outside flow passage that extends in a straight line along the axial direction. The first clearance and the second clearance communicate with each other, and the sealing device has a labyrinth clearance including the first clearance and the second clearance.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: June 1, 2021
    Inventors: Takafumi Uemoto, Yuya Yamamoto, Takuya Toda, Suguru Nakajima
  • Patent number: 10995680
    Abstract: A sealing member and an air intake controller are disclosed herein. The sealing member includes an inner cylindrical section having a gradually-decreasing-diameter portion which has a diameter that gradually decreases in one direction, an outer cylindrical section having a gradually-increasing-diameter portion which has a diameter that gradually increases in the one direction, and an annular connecting section which connects the inner cylindrical section and the outer cylindrical section at an end portion on the side in the opposite direction from the one direction. The outer cylindrical section has an extended cylindrical portion, the outer diameter of which gradually decreases in the one direction. An air intake controller can incorporate the sealing member that is disclosed herein between a shaft hole 1 and a valve shaft.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: May 4, 2021
    Assignee: Keihin Corporation
    Inventors: Satoshi Tanaka, Soichiro Nao, Kazusa Sato
  • Patent number: 10710151
    Abstract: A seal cassette for a roll line in a continuous casting machine. The seal cassette configured to seal off a space from an outside environment and includes a first circumferential element and a second circumferential element arranged coaxially and rotatably movable relative each other. At least one third circumferential element is provided and is arranged coaxially relative the first and the second circumferential element and further arranged to be rotatably movable relative the second circumferential element. The first circumferential element is formed as a sleeve extending in an axial direction (A). The second circumferential element provides at least one circumferential seal portion arranged to seal between the second element and the first element. The at least one third circumferential element provides at least one circumferential seal portion to seal between the third element and the second element and further provides a circumferential seal portion that seals against the first element.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: July 14, 2020
    Assignee: Aktiebolaget SKF
    Inventors: Hans-Joachim vom Stein, Erik Mitchell
  • Patent number: 10663003
    Abstract: A sealing apparatus main body includes a reinforcing ring and an elastic material portion which is attached to the reinforcing ring and formed of an elastic material. The elastic material portion has a side lip formed so as to contact a slinger from the inside, a radial lip formed so as to contact the slinger from an outer periphery side, and an outer peripheral annular projection being an annular projection which is arranged on an outer periphery side of the side lip and protrudes to the outside. The slinger has a fitting portion and a flange portion extending from an outer end portion of the fitting portion to the outer periphery side. The elastic material portion forms a labyrinth seal between the outer peripheral annular projection and the side lip between the elastic material portion and the flange portion of the slinger.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: May 26, 2020
    Inventor: Takuya Kato
  • Patent number: 10655735
    Abstract: A seal arrangement has two machine parts movable toward one another along or about a movement axis. One of the two machine parts forms a seal holding structure and the other forms a sealing surface. A sealing device between the two machine parts is arranged on or in the seal holding structure, wherein the sealing device includes a sealing element and a pre-tensioning element which is separate from the sealing element and by means of which the sealing element is tensioned in the radial direction against the sealing surface of the respectively other machine part. The sealing element is formed by an elastically deformable sealing film. On the sealing film side, the pre-tensioning element forms an embossed structure which presses into the sealing film where the sealing film bears against the sealing surface with a contact pressure progression which corresponds to the embossed structure of the pre-tensioning element.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: May 19, 2020
    Inventors: Martin Franz, Bernhard Hahn, Matthias Keck
  • Patent number: 10612634
    Abstract: A dustproof device is provided for use with a ball screw which includes a screw rod and a nut mounted around the screw rod. The dustproof device includes an annular body and an elastic valve plate. The annular body is disposed inside the nut and penetrated by the screw rod and has an outer annular surface provided with a debris exit. The debris exit has one end in communication with a spiral passage formed between the screw rod and the nut. The elastic valve plate, which is provided at the opposite end of the debris exit of the annular body, can be pushed open by a fluid and thus opens the debris exit, allowing the debris generated by the ball screw to be discharged through the debris exit along with the fluid, thereby contributing to extending the service life of the ball screw.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: April 7, 2020
    Inventors: Hong-Chun Teng, Szu-Wei Yu, Wei-Lun Liu
  • Patent number: 10590897
    Abstract: Provided is a high-pressure fuel supply pump capable of fixing a cylinder to a pump body with excellent sealability in a simple structure even at a high fuel pressure. A high-pressure fuel supply pump including a pump body in which a pressurizing chamber is formed, and a cylinder inserted into a hole formed in the pump body and formed in a cylindrical shape, the high-pressure fuel supply pump including: a protrusion disposed at an end portion of the pump body opposite to the pressurizing chamber, formed from an outer peripheral side to an inner peripheral side with respect to an inner peripheral surface opposite to an outer peripheral surface of the cylinder, and protruding toward the cylinder, wherein the protrusion is formed so as to protrude to a side opposite to the pressurizing chamber with respect to a flat portion of the end portion of the pump body, and the protrusion is formed so as to support the cylinder from a side opposite to the pressurizing chamber.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: March 17, 2020
    Inventors: Daisuke Kitajima, Kenichi Gunji, Shinichirou Enomoto, Masayuki Kobayashi, Masamichi Yagai, Masahiro Moritaka
  • Patent number: 10450838
    Abstract: A diverter valve housing is secured to an upper end of a pump. A shuttle in the diverter valve housing moves between an upper closed position and a lower open position. A floating ring has an exterior band that abuts an upper end of the shuttle to move the shuttle downward. The floating ring moves upward when the pump operates. A bushing abuts an upward facing shoulder in the floating ring and is adhered within the bushing by a layer of adhesive. The shuttle has upper and lower seals separated by upper and lower spacer rings. A stop ring between the spacer rings limits downward movement of the upper spacer ring and also limits upward movement of the lower spacer ring.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: October 22, 2019
    Assignee: Baker Hughes, a GE Company, LLC
    Inventor: Douglas Berry
  • Patent number: 10322758
    Abstract: A track link comprises a body defining a top surface, a bottom surface, a first side surface and a second side surface, a proximate end and a distal end, a first bore adjacent the distal end defining a first longitudinal axis and a second bore adjacent the proximate end defining a second longitudinal axis; wherein either the first bore or the second bore is a blind bore, forming a counterbore configured to house a seal assembly and the counterbore defines a wall that forms an angle with the longitudinal axis of the bore that is greater than zero degrees.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: June 18, 2019
    Assignee: Caterpillar Inc.
    Inventors: Jason L. Sebright, Eric James Johannsen
  • Patent number: 10323641
    Abstract: An electrical submersible pump assembly has a pressure equalizer coupled to a lower end of a motor. The equalizer has a motor lubricant passage through which lubricant in the motor communicates with motor lubricant in the equalizing element. A valve element in the motor lubricant passage has a closed upper position and an open lower position. The valve element has a drive member on an upper end that mates with a shaft drive member on a lower end of the motor shaft while the valve element is in the upper position and disengages from the shaft drive member while the valve element is in the lower position. A locking feature between the valve element and the motor lubricant passage retains the valve element in the upper position and is releasable in response to rotation of the motor shaft in a selected direction.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: June 18, 2019
    Assignee: Baker Hughes, a GE Company, LLC
    Inventors: David Tanner, Aron M. Meyer, Arturo Luis Poretti, Ryan P. Semple
  • Patent number: 10273665
    Abstract: A Cabinet for mounting of water pipe connections, where a number of water pipes (12, 13) are adapted to be fed into the cabinet, said cabinet comprises a body part (1) which is adapted to be mounted in a wall. The cabinet further comprises a base part (2) with through holes (10) for pipes (12, 13) whereas the openings (10) are arranged in sleeves that protrudes into the cabinet. The sleeves being configured to seal outwardly against the pipes (13). The base part comprises at least one drain (5) for leakage water, and the base part is a separate part with edges that protrudes into the cabinet.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: April 30, 2019
    Inventor: Thor Frölich Braathen
  • Patent number: 10260633
    Abstract: A sealing device which can stably exhibit a sealing function and enables a reduction in the number of components as well as in a radial size of the device. The sealing device includes a metal cartridge case (110) having a case main body (111) and a first supporting portion (113), a resin sealing member (120), an elastic sealing member (130), and a metal fixing member (140). An outer diameter of a cylindrical portion (141) of the fixing member (140) is set to be equal to or smaller than an inner diameter of the case main body (111), and the cylindrical portion (141) and the case main body (111) are secured by welding. The resin sealing member (120) and the elastic sealing member (130) are fixed by being held in between the first supporting portion (113) and a second supporting portion (142) of the fixing member (140).
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: April 16, 2019
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventor: Akira Yoshino
  • Patent number: 9834737
    Abstract: The present invention provides a refrigerating machine oil composition comprising an ester-based base oil, an epoxy compound, and a carbodiimide compound, the refrigerating machine oil composition being used with a refrigerant containing a fluoropropene in a refrigerating machine comprising a member containing polyethylene terephthalate and/or a member containing hydrogenated acrylonitrile butadiene rubber.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: December 5, 2017
    Inventors: Hitoshi Takahashi, Ken Sawada, Akira Tada, Souichirou Konno
  • Patent number: 9796212
    Abstract: Provided is a hub unit bearing wherein a cover can be firmly fitted with an outer ring member, and it is difficult for foreign matter to enter inside through a water drainage hole formed in the cover. The cover that covers the inside end section in the axial direction of the hub unit bearing includes a disk section, a small-diameter cylindrical section bent in the axial direction from the outer perimeter edge section of the disk section and a large-diameter cylindrical section. A cut and raised section that is cut and raised toward the inside in the radial direction is formed in the small-diameter cylindrical section, and a water drainage hole that passes through from inside to outside the cover is provided in the portion that is cut and separated from the small-diameter cylindrical section.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: October 24, 2017
    Assignee: NSK Ltd.
    Inventor: Yuji Nakamura
  • Patent number: 9695938
    Abstract: To provide a scheme that, when making a prediction in multilayer coding, takes into account the quality of the image in each layer and can adaptively determine in want manner to refer to the image of which layer. Provided is an image processing device provided with a prediction control unit that, on the basis of an indicator dependent on the image quality of a first layer image and a second layer image, sets the weighting when including a first layer pixel and a second layer pixel for predicting a pixel in the second layer that is encoded or decoded referring to the first layer.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: July 4, 2017
    Assignee: NOK Corporation
    Inventor: Atsushi Suzuki
  • Patent number: 9683662
    Abstract: The invention provides a sealing device having a sliding lip and a labyrinth lip, wherein the sealing device can inhibit the lip from being deformed as the lip even if the labyrinth lip is exposed to the foreign material in the machine outside and is swollen, thereby making the sliding lip protecting function hard to be lost. In order to achieve the object, in a sealing device having a sliding lip which seals so as to prevent foreign material in a machine outside from entering into a machine inside, and a labyrinth lip which makes the foreign material hard to reach the sliding lip, a notch portion for absorbing swelling of the labyrinth lip when the labyrinth lip is exposed to the foreign material and is swollen is provided in a leading end portion of the labyrinth lip.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: June 20, 2017
    Assignee: NOK Corporation
    Inventor: Go Kanzaki
  • Patent number: 9566591
    Abstract: A closable centrifuge cup comprising a cup and a lid which can be placed on the cup edge to close the cup opening and can be fastened under tension by means of at least one clamping element with its lid edge to the cup edge. The cup edge or a gasket arranged in the region of the cup edge protrudes further in the direction towards the lid edge in a region remote from the at least one clamping element in the circumferential direction of the cup edge than in a region situated closer to the at least one clamping element. Alternatively, the lid edge or a gasket arranged in the region of the lid edge protrudes further in the direction towards the cup edge in a region remote from the at least one clamping element in the circumferential direction of the lid edge than in a region situated closer to the at least one clamping element.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: February 14, 2017
    Assignee: Thermo Electron LED GmbH
    Inventor: Norman Ballhause
  • Patent number: 9546687
    Abstract: A bearing seal (2) of a rolling bearing configured as a wheel bearing (1) that is connected between a first rotationally rigid bearing part (5) and a second bearing part (7) that is integral with a wheel bearing flange (8), between which rolling bodies (6) are guided. The bearing seal (2) includes a splash plate (3) configured as a preseal, which is supported on an axially and radially oriented contour (12) of the second bearing part (7), and together with the wheel bearing flange (8), axially defines a catch channel (24). A seal fitting (4) is fixed to the first bearing part (5) by a reinforcement (22), wherein the reinforcement (22) is enclosed by an elastic sealing material (21), at least in some areas, from which sealing lips (20, 28, 29) are formed, which are grindingly or non-grindingly associated with the splash plate (3).
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: January 17, 2017
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Andreas Kaiser, Roland Langer, Frank Eichelmann, Tobias Bauer, Markus Reuter, Ralf Heiss, Jonas Lang
  • Patent number: 9440489
    Abstract: A cassette seal includes a first and a second ring, wherein the axial sections and the radial sections of the first and second ring are aligned approximately parallel to one another, forming an interior in which a sealing arrangement arranged on the first ring engages in the direction of the second ring and a gap is formed between the radial section of the first ring and the axial section of the second ring. A fixed additional element extends on the side of the axial section of the second ring facing away from the interior, and the rises in the direction of the radial section of the first ring above the axial section of the second ring with a protrusion. The protrusion has a downward slope in the direction of the second ring, to form the gap.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: September 13, 2016
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Alexander Haepp, Wilhelm Walter
  • Patent number: 9239091
    Abstract: A sealing device for sealing between a tube member and an axial member movably inserted into the tube member includes a dust seal held on an opening end part of the tube member and including an annular dust seal lip held in sliding contact with the outer peripheral surface of the axial member, and a scraper arranged at an inner side of the dust seal and including an annular lip portion slidably pressed into contact with the outer peripheral surface of the axial member. The hardness of the lip portion is set to be higher than that of the dust seal lip.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: January 19, 2016
    Inventors: Kiyoshi Kani, Minoru Honda, Makoto Suzuki, Naohide Takimoto
  • Patent number: 9103445
    Abstract: The present invention is a generally circular rotary seal that establishes sealing between relatively rotatable machine components for lubricant retention and environmental exclusion, and incorporates seal geometry that interacts with the lubricant during relative rotation to distribute a lubricant film within the dynamic sealing interface. A preferably curved elevated contact pressure zone serves to maximize interfacial lubrication in critical areas during severe operating conditions by utilizing lubricant that would otherwise escape at the trailing edge of the hydrodynamic waves. The zones are produced by geometry that serves to minimize lubricant shear area, seal torque, seal volume, and wear, while ensuring retrofitability into the seal grooves of existing equipment.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: August 11, 2015
    Assignee: Kalsi Engineering, Inc.
    Inventors: John Erick Schroeder, Lannie Laroy Dietle
  • 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
    Inventors: Guenter Hintenlang, Christian Kohl
  • Patent number: 9004493
    Abstract: A sealing arrangement used to create a seal between a first part of a chain and a second part of the chain, wherein the second part can at least be pivoted in relation to the first part, includes a sealing ring with an annular sealing lip for sealing a lubricant area between parts which can be pivoted towards each other, and an elastic ring which is adapted to be fixed to one of the parts and which is adapted to exert pressure in the sealing ring. In addition, a supporting ring is arranged between the sealing ring and the elastic ring.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: April 14, 2015
    Assignee: AB SKF
    Inventors: Hans-Joachim Vom Stein, Wolfgang Korte, Marcus Stojek
  • Patent number: 8985590
    Abstract: A seal assembly can be incorporated into a track pin cartridge assembly of an undercarriage of a track-type machine. The seal assembly can include a pin defining a longitudinal axis and first and second members both coaxial with the pin about the longitudinal axis. The first member is pivotable about the longitudinal axis with respect to the second member and includes a load ring engagement surface defining a seal cavity disposed in proximal relationship to the second member. A seal assembly, including a seal ring and a load ring, is disposed in the seal cavity and sealingly engages the first and second members. A radial segment of a first member engagement surface of the load ring is radially offset, measured along a radial axis perpendicular to the longitudinal axis, from a radial segment of a seal ring engagement surface of the load ring.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: March 24, 2015
    Assignee: Caterpillar
    Inventors: Guanghui Liang, Mark Diekevers, Mark Kiesel, Eric Johannsen, Jason Sebright
  • Patent number: 8955850
    Abstract: An abeyance seal includes a polymer actuation ring, which defines a flexible sealing lip normally spaced from the shaft. When subjected to leakage, this element collapses against the shaft and forms an initial sealing. Secondarily, a metal sealing/anti-extrusion ring provides a second seal during leakage. The polymer ring provides the initial sealing function during leakage at low differential pressure, and once the polymer ring seals to the shaft, increased sealed pressure loads the polymer ring against the metal sealing/anti-extrusion ring causing it to deform so that the metal ring comes into contact with the shaft to form a second seal.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: February 17, 2015
    Assignee: Flowserve Management Company
    Inventors: James D. Saucerman, Lionel A. Young, Ronald L. Grace, John Davis, David Zegres
  • Patent number: 8955646
    Abstract: A device for lubricating an oil seal of an engine which is simple in construction and low in manufacturing cost without the need for providing piping for supplying lube oil to the oil seal and with which lube oil can be supplied sufficiently and properly to the oil seal to prevent overheating of the oil seal which induces oil leakage and occurrences of damage to the oil seal. The lubricating device has an oil seal which contacts a side face of a disk plate fixed to an end of a crankshaft of the engine and seals a gear room of the engine from outside, wherein an oil injection nozzle is attached to an end face of a crankcase of the engine such that the oil injection nozzle is in communication with a main oil gallery of the engine and oil in the main oil gallery is sprayed toward the slide contacting part of the oil seal.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: February 17, 2015
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Miyuki Takahashi, Masaki Endo
  • Publication number: 20150035236
    Abstract: A sheet contains AEM and ACM, and the AEM and the ACM are integrally bonded together. A backbone monomer of the AEM is formed of ethylene methyl acrylate, and a crosslinking monomer of the AEM has a carboxyl group. A backbone monomer of the ACM is formed of at least one of ethyl acrylate, butyl acrylate, and methoxy ethyl acrylate, and a crosslinking monomer of the ACM has a carboxyl group, an epoxy group, or an active chlorine group.
    Type: Application
    Filed: July 31, 2014
    Publication date: February 5, 2015
    Inventor: Takeshi TSUDA
  • Publication number: 20150035235
    Abstract: A sheet is made of ACM. A backbone monomer of ACM is a mixture of ethyl acrylate and butyl acrylate. The weight ratio of butyl acrylate to ethyl acrylate is 0.8 to 1.3. A crosslinking monomer of ACM has a carboxyl group.
    Type: Application
    Filed: July 31, 2014
    Publication date: February 5, 2015
    Inventor: Takeshi TSUDA
  • Publication number: 20150014941
    Abstract: An oil seal for automobiles including an elastic component having a seal lip portion. The elastic component consists of a composition containing fluororubber and fluororesin. The seal lip portion has protrusions at least on the surface thereof. The protrusions substantially consist of the fluororesin contained in the composition. The fluororesin is a copolymer containing a polymerized unit based on tetrafluoroethylene and a polymerized unit based on hexafluoropropylene.
    Type: Application
    Filed: January 16, 2013
    Publication date: January 15, 2015
    Inventors: Tomihiko Yanagiguchi, Haruhisa Masuda, Yasuhiro Nakano, Takahiro Kitahara
  • Publication number: 20150014937
    Abstract: A fluid sealing assembly includes a shaft and a seal. The shaft includes a surface portion having a microstructural geometry. The seal has a radially flexible portion disposed in proximity to the surface portion having the microstructural geometry such that when the shaft is rotated a pressure differential is generated at the interface of the seal and the surface portion having the microstructural geometry that pushes or pulls fluid relative to the interface.
    Type: Application
    Filed: December 31, 2013
    Publication date: January 15, 2015
    Inventors: Chad A. Behrman, Andrew D. Copeland
  • Patent number: 8931452
    Abstract: The present invention provides a vehicle valve stem seal having both durability and sliding properties at an extremely high level in addition to usual sealing performance. The present invention is a vehicle valve stem seal comprising an elastic member with a seal lip portion on an end of a valve stem guide, the seal lip portion slidably closely contacting with a valve stem of an engine, wherein the elastic member is formed of a composition containing a fluororubber and a fluororesin and has projecting portions at least on a surface of the seal lip portion, the projecting portions being substantially formed of the fluororesin contained in the composition, the fluororesin is a copolymer including a polymerization unit derived from ethylene and a polymerization unit derived from tetrafluoroethylene, and the fluororubber is a polymer including a polymerization unit derived from vinylidene fluoride.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: January 13, 2015
    Assignees: Honda Motor Co., Ltd., Daikin Industries, Ltd.
    Inventors: Hidetaka Ogishi, Tetsuya Mizone, Kouhei Takemura, Tomihiko Yanagiguchi
  • Patent number: 8919782
    Abstract: A dynamic lip seal is provided for sealing between a housing and a shaft and with a fluid medium to be sealed on an oil side and air on an air side of the seal. The seal includes a seal lip extending from a seal body and including a shaft contact portion adapted for engagement with the shaft and including a static band and a first set of spiral grooves disposed on an oil side of the static band, and a second set of spiral grooves on an air side of the static band. The first and second sets of spiral grooves are both configured to pump oil toward the static band when the shaft is rotated in a first direction, and the first and second sets of spiral grooves are both configured to pump oil away from the static band when the shaft is rotated in a second direction.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: December 30, 2014
    Assignee: Freudenberg-NOK General Partnership
    Inventor: Alexander Berdichevsky
  • Patent number: 8919504
    Abstract: An aircraft brake system electromechanical actuator is provided. The actuator is configured with features that allow the electric motor to be a line replaceable unit. One such feature is a foreign-object-damage shield that inhibits dust, debris, and/or other particulate contaminants from entering the electromechanical actuator during electric motor removal and replacement.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: December 30, 2014
    Assignee: Honeywell International Inc.
    Inventors: Casey Hanlon, Kellan Geck, James Neil Quitmeyer, Allan Blunt
  • Publication number: 20140361493
    Abstract: A sealing device is provided for use with an assembly having radially inner and outer parts in fluid communication and movable relative to one another. The sealing device includes a first annular lip which defines an opening for receiving the radially inner part, and an annular channel disposed radially outward of the opening. The first annular lip is configured and adapted for deformation and compressive sealed engagement with the radially inner part while permitting movement of the radially inner part relative thereto. An annular body integrally formed with the first annular lip of the sealing device defines an interior space in communication with the annular channel and the opening. The annular body extends radially outward of the first annular lip and is configured and adapted for sealed engagement with the radially outer part.
    Type: Application
    Filed: June 11, 2013
    Publication date: December 11, 2014
    Inventors: John Earl Short, Gregory Zink, Spencer D. Pack
  • Publication number: 20140319773
    Abstract: A shaft sealing assembly for creating a seal between a shaft and a stationary housing comprising: the shaft sealing assembly including a case and a sealing assembly within the case; the case having an inner seal surface diameter within which the shaft is located and within which the sealing assembly located; the case having an outside diameter which may be engaged to the stationary housing; the sealing assembly having an inner seal circumferential surface and an outer seal circumferential surface with the inner seal circumferential surface being engaged to a circumferential surface of the shaft, wherein the sealing assembly remains stationary on the shaft and the outer seal circumferential surface being slidably engaged to the inner seal surface diameter of the case.
    Type: Application
    Filed: April 26, 2013
    Publication date: October 30, 2014
    Inventor: Crosby HOFF
  • Publication number: 20140319905
    Abstract: A seal assembly can be incorporated into a track joint assembly of an undercarriage of a track-type machine. The track joint can have a first member pivotable about a rotational axis relative to a second member thereof. The first member includes a seal member engagement surface defining, at least in part, an axially-extending seal cavity about the rotational axis and within which the seal assembly is disposed. The seal assembly can include a thrust ring and a seal member mounted to the thrust ring. The seal member includes a first member engagement surface, a second member engagement surface, a frusto-conical inner relief surface, a thrust ring engagement surface, and an outer relief surface.
    Type: Application
    Filed: April 15, 2014
    Publication date: October 30, 2014
    Applicant: Caterpillar Inc.
    Inventors: Sunil Mathew, Mark Kiesel, Pradeep Chapagain
  • Publication number: 20140265152
    Abstract: A scavenger pump seal and radial shaft seal assembly therewith are provided. The scavenger pump seal includes an inner case configured for fixed attachment to a shaft for conjoint rotation with the shaft and an outer case configured for fixed receipt in a housing in which the shaft rotates. The inner case has an innermost wall sized for a press fit on the shaft and an outermost wall. An absorbent member is fixed to the inner case with the outermost wall overlying the absorbent member, thereby preventing the absorbent member from moving radially outwardly. The outer case has an outermost wall sized for fixed receipt in the housing, and facilitates preventing the egress of oil to the external environment.
    Type: Application
    Filed: March 17, 2014
    Publication date: September 18, 2014
    Applicant: Federal-Mogul Corporation
    Inventor: David M. Toth
  • Publication number: 20140259606
    Abstract: A shaft seal includes a lip at the low pressure end with a tapered cylindrical body extending from the lip. The tapered cylindrical body has a first diameter where the tapered cylindrical body meets the lip and a second diameter at a distal end that is exposed to a high pressure fluid. An aperture is formed through the lip and through the tapered cylindrical body following an axis of the tapered cylindrical body. The aperture has a first end at the lip and a distal second end. At the first end, the aperture has a first inner diameter that is slightly greater than the outer diameter of the shaft at the distal end, the aperture tapers to a second inner diameter which is approximately the diameter of the shaft. An o-ring, is positioned around the tapered cylindrical body applying pressure on the tapered cylindrical body against the shaft.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Inventors: Tom Hedger, Blake K. Travis, II, James Wiegand
  • 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: 8820749
    Abstract: A labyrinth sealing device is disclosed for use between a rotating shaft and a bearing housing. In some embodiments, an internal stator engages the housing and a rotor engages the shaft. A labyrinth pathway is defined between the rotor and stator to prevent the migration of lubricants and/or contaminants in either direction. The rotor acts as a running surface for the sealing element, but may also with a ground surface of the rotor to provide a pump that continuously draws lubricant away from the sealing lip toward a sump. In another embodiment, the stator and sealing element are combined as a single element formed from a sealing material. A recess in the sealing lip creates a pressure differential at the sealing surface and minimizes wear.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: September 2, 2014
    Assignee: Garlock Sealing Technologies, LLC
    Inventors: Christopher E. Tones, Gregory Burnett, Kwongvoon Wong, Earl Rogalski
  • Patent number: 8814170
    Abstract: An annular seal member configured to seal a gap between a shaft hole and a shaft inserted into the shaft hole, the annular seal member comprises: an annular base part; an annular lip, which includes a lip edge that is configured to be contact with one of a hole face of a shaft hole and an outer periphery of a shaft, the one of which is a seal mating face; a first convex part, a second convex part and a passage recess, which is provided at a face of the base part facing the seal mating face; a concave part, which is formed at a position between the second convex part and the base end portion of the annular lip, and which has a circumferential size larger than a recess width of the passage recess.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: August 26, 2014
    Assignees: Advics Co., Ltd., Denso Corporation
    Inventors: Kei Okamura, Junichi Fukuda, Yoshitake Hisada
  • Publication number: 20140225332
    Abstract: The present invention provides a rotary seal including a first part having an axial sealing lip and a second part having an axial counterface against which the axial sealing lip bears. According to the invention, a rotational one of the first part and the second part is provided with a reservoir for retaining a volume of grease at a location radially inward of the axial sealing lip. The reservoir is designed such that the movement of grease under the action of centrifugal force is prevented, while the movement of base oil, which bleeds from the volume of grease retained in the reservoir, is allowed. As a result, the supply of base oil to the sealing contact takes place for a longer period of time, which extends the life of the seal.
    Type: Application
    Filed: August 9, 2012
    Publication date: August 14, 2014
    Inventor: Pieter Baart
  • 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
  • Patent number: 8800733
    Abstract: A guiding and sealing unit for a shock absorber rod including a bushing and a sealing assembly, integrally carried by an end of the bushing, and including a sealing ring made of elastomeric material having at least one annular sealing lip which radially and overhangingly protrudes towards a symmetry axis, and a metallic reinforcing structure, having a flange-shaped portion that abuts the end of the bushing and a sleeve-shaped portion operatively associated to the sealing lip; the sealing ring has a flange-shaped portion which radially extends from a root portion of the at least one annular lip, and an annular projection integrally formed with the flange-shaped portion, which axially and protrudingly extends from the latter, facing the piston and shaped to make, a limit stop element for the piston; the flange-shaped portion of the reinforcing structure is coupled to the flange-shaped portion and extends under the annular projection.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: August 12, 2014
    Assignee: Aktiebolaget SKF
    Inventor: Roberto Pasino
  • Publication number: 20140203520
    Abstract: Disclosed is a lip seal for water pump made of a rubber-like elastic material, fixed to a housing as a fixed side and in sliding contact with a shaft rotating relative to the housing; the lip seal being obtained by vulcanization-molding of a rubber composition comprising 100 parts by weight of the rubber-like elastic material, 1 to 150 parts by weight of a reinforcing filler, 5 to 90 parts by weight of a non-reinforcing filler having an average particle diameter of 1 ?m or more, 0.1 to 5 parts by weight of a coupling agent, 1 to 15 parts by weight of a co-crosslinking agent, and 0.5 to 10 parts by weight of an organic peroxide. The lip seal for water pump provides a materially solution, rather than a structural solution, to prevent softening and volume swelling of the rubber-like elastic material and the generation of deposits in the rotating shaft, which are problematic for rotation torque and LLC resistance.
    Type: Application
    Filed: September 4, 2012
    Publication date: July 24, 2014
    Applicant: Eagle Industry Co., Ltd.
    Inventors: Takuya Yamanaka, Suguru Yoshida, Masafumi Kato, Hideyuki Murakami