Multiple Sealing Faces (e.g., Double Seals, Etc.) Patents (Class 277/361)
  • Patent number: 11459956
    Abstract: A face seal arrangement includes a seal seat rotating with the shaft and a non-rotating face seal including a sealing ring. The sealing ring includes a sealing face biased into contact with the seal seat. The sealing ring also has a groove defined remote from the seal face relative to the seal seat. The groove provides a pressure face that will be exposed to high pressure air outward of the bearing compartment. A coil spring biases the seal housing towards the seal seat, such that the sealing face of the sealing ring is biased into contact with seal seat by air pressure against the pressure face, and the coil spring. A balance ratio is defined between an area of the pressure face and an area of the sealing face, the balance ratio is between 0.5 and 0.64.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: October 4, 2022
    Assignee: Raytheon Technologies Corporation
    Inventors: Jonathan Logan Miller, Nasr A. Shuaib, Christopher J. Larson
  • Patent number: 11441684
    Abstract: A mechanical seal that includes a holder assembly having a fastener-receiving aperture formed therein and having a pair of grooves disposed on either side of the fastener-receiving aperture. A sealing cover element is disposed over the fastener-receiving aperture and has opposed leg portions that seat within the groove.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: September 13, 2022
    Assignee: A.W. CHESTERTON COMPANY
    Inventors: Josef Fichtner, Pierre Aouni Alfons Al-Darra
  • Patent number: 11339825
    Abstract: A bearing includes a first housing part and a second housing part. A housing gap is formed between the first housing part and the second housing part, and a bearing unit is arranged in the housing gap. In embodiments, a sealing system is provided that seals the housing gap. The sealing system may include at least one first sealing lip that is designed such that it can pivot. In embodiments, a first sealing lip is at a distance from the first housing part and/or the second housing part in the non-sealing state, and for sealing the housing gap, the first sealing lip may pivot and come into contact with the first housing part and/or the second housing part.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: May 24, 2022
    Assignee: Vibracoustic SE
    Inventors: Philipp Werner, Hilrich Kardoes
  • Patent number: 11193594
    Abstract: An intershaft seal assembly comprises an annular seal ring disposed between a pair of annular runners connected to a hollow outer rotating shaft, and a surface of a co-axial inner rotating shaft. The centrifugal force resulting from rotation of the hollow outer rotating shaft effects engagement of the annular seal ring with the surface of the co-axial inner rotating shaft. The surface may be a radially-inward-facing surface of a retaining arm connected to the co-axial inner rotating shaft.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: December 7, 2021
    Assignee: Rolls-Royce Corporation
    Inventor: John Munson
  • Patent number: 11118628
    Abstract: A fluid dynamic bearing device prevents an oleophobic agent from wetting and spreading to a tapered seal portion, including lubricating oil C filled in a condition in which the oil is separated sandwiching a separator portion 240 holding a gas layer arranged between two conical bearing members 201, and two primary tapered seal portions 230 each connecting to one of both ends along an axial direction of the separator portion 240, wherein width in a radial direction of the two primary tapered seal portion 230 decreases as each approaches toward the two conical bearing members 201, a gas-liquid interface of the lubricating oil C is located each of the two primary tapered seal portions 230, an oleophobic agent blocking portion 250 is arranged at each of both ends in an axial direction of the separator portion 240, a separator central portion 244 is arranged between the oleophobic agent blocking portions 250 of the separator portions 240, and an oleophobic coating is formed at least at the separator central portio
    Type: Grant
    Filed: November 3, 2020
    Date of Patent: September 14, 2021
    Assignee: MINEBEA MITSUMI INC.
    Inventors: Hideaki Showa, Daigo Nakajima, Kazuo Ota
  • Patent number: 10619500
    Abstract: A face seal includes a seal carrier defining an axis and having a pilot flange, a seal element disposed at least partially in the seal carrier, and a retaining plate connected to one axial end of the seal carrier. The retaining plate has an axial step disposed circumferentially about the retaining plate. The axial step is interfaced with the pilot flange.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: April 14, 2020
    Assignee: United Technologies Corporation
    Inventors: Alexander J. Maret, Jonathan Logan Miller
  • Patent number: 10605255
    Abstract: A shaft-sealing device for a pump includes a seal housing attached to a pump housing in which a rotary shaft is mounted. The seal housing is provided with a coolant inlet passage and a coolant outlet passage, both of which interconnect with a seal space in the seal housing. The coolant outlet passage intersects with the seal space at an opening at which first and second sides are defined according to a flowing direction of a coolant. The seal space includes an inner annular surface having a first section adjacent to the first side of the opening. A guide slot is provided in the first section of the inner annular surface. With a pump ring in the seal housing rotating, the coolant is guided into the seal space via the coolant inlet passage and further discharged from coolant outlet passage through the opening smoothly due to the guide slot.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: March 31, 2020
    Inventor: Chi-Yun Kung
  • Patent number: 10520096
    Abstract: An intershaft seal assembly comprises an annular seal ring disposed between a pair of annular runners connected to a hollow outer rotating shaft, and a surface of a co-axial inner rotating shaft. The centrifugal force resulting from rotation of the hollow outer rotating shaft effects engagement of the annular seal ring with the surface of the co-axial inner rotating shaft. The surface may be a radially-inward-facing surface of a retaining arm connected to the co-axial inner rotating shaft.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: December 31, 2019
    Assignee: ROLLS-ROYCE CORPORATION
    Inventor: John Munson
  • Patent number: 10294988
    Abstract: A pillow block bearing assembly for a drivetrain assembly of a work vehicle may include a pillow block housing defining a bearing cavity, a bearing disposed within the bearing cavity, and first and second sealing devices installed within the bearing cavity. Additionally, the drivetrain assembly may include a shaft received within the pillow block bearing assembly, with the shaft extending through the bearing such that an outer circumferential surface of the shaft directly contacts an inner circumferential surface of an inner race of the bearing at a bearing/shaft interface defined between the shaft and the bearing. Moreover, a sliding fit may be defined between the outer circumferential surface of the shaft and the inner circumferential surface of the inner race at the bearing/shaft interface such that the shaft is allowed to slide axially relative to the bearing when a given axial load is applied through the shaft.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: May 21, 2019
    Assignee: CNH Industrial America LLC
    Inventors: Srinivasan Rangan, Michael Volkmer
  • Patent number: 10253886
    Abstract: Systems and methods are described for processing a high-temperature process fluid using a processing machine in a subsea location while protecting dynamic seals within the machine. In some examples a small portion of the process fluid is cooled using a cooling system the cooled process fluid is then directed towards the dynamic seals. In other examples the dynamic seals are shielded and isolated from the high temperature process fluid and cooler barrier fluid is circulated within an enclosed volume in proximity to the seal.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: April 9, 2019
    Assignee: Framo Engineering AS
    Inventors: Robert Groette, Anders Brunvold, Per Gunnar Vikre, Haakon Jostein Grimstad
  • Patent number: 10215287
    Abstract: A seal assembly is for sealing about a shaft rotatable about a central axis and includes a generally annular seal disposable about the shaft. The seal has a first axial end exposable to a higher pressure fluid, an opposing second axial end exposable to a lower pressure fluid, an outer circumferential surface exposable to the higher pressure fluid and an inner circumferential sealing surface. The inner sealing surface extends about the shaft to define an annular clearance space between the shaft outer surface and the seal inner surface, which provides a flow path between the seal axial ends. The seal is configured such that a differential of at least a predetermined magnitude between fluid pressure on the seal outer surface and fluid pressure on the seal inner surface deflects at least the seal second axial end radially inwardly to reduce the volume of the clearance space.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: February 26, 2019
    Assignee: Kaydon Ring & Seal, Inc.
    Inventor: Sanjay Kumar Baheti
  • Patent number: 10203036
    Abstract: A shaft seal assembly may include a stator and a rotor. The rotor may be configured to rotate with a shaft, and the stator may be engaged with a housing. The stator and rotor may be configured with radial and/or axial recesses and/or radial and/or axial projections. These various features may be configured such that the stator and rotor cooperate to form a ring cavity. A cooperating ring may be positioned in the ring cavity, and the cooperating ring may be configured such that is circumferentially expandable so that the cooperating ring changes size and/or shape when it rotates as opposed to when it is not rotating.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: February 12, 2019
    Assignee: Inpro/Seal LLC
    Inventor: Neil F. Hoehle
  • Patent number: 9964215
    Abstract: A sliding component is characterized in that the sealing face of one of a pair of sliding parts that slide relative to each other is provided with a first pumping groove that is open to the high-pressure fluid side but isolated from the low-pressure fluid side by a seal area and also angled to discharge the fluid toward the high-pressure fluid side by sliding relative to the mating sealing face, as well as a second pumping groove that is open to the low-pressure fluid side but isolated from the high-pressure fluid side by a seal area and also angled to discharge the fluid toward the high-pressure fluid side by sliding relative to the mating sealing face, wherein the low-pressure fluid-side end of the first pumping groove is arranged adjacent to the high-pressure fluid-side end of the second pumping groove.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: May 8, 2018
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventor: Masatoshi Itadani
  • Patent number: 9920770
    Abstract: A flow machine with a rotor-side shaft includes: a stator-side housing in which the rotor-side shaft is mounted; a seal bushing configured to seal a gap between the stator-side housing and the rotor-side shaft; a retaining bolt configured to center the seal bushing at the stator-side housing in a heat-resilient manner; and a clamp configured to fix the seal bushing in a positively engaging manner at the stator-side housing while ensuring a radial displaceability of the seal bushing relative to the stator-side housing.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: March 20, 2018
    Assignee: MAN Diesel & Turbo SE
    Inventors: Carsten Bennewa, Hildegard Ebbing, Emil Aschenbruck
  • Patent number: 9909438
    Abstract: Aspects of the disclosure are directed to a system associated with an engine of an aircraft, the system comprising: a fluid source that is configured to provide a fluid at a first pressure value, a carbon seal, a seal plate that includes at least one lift-off feature that interfaces to the carbon seal, and a pressure boosting mechanism configured to obtain the fluid from the fluid source, increase the pressure of the fluid to a second pressure value, and provide the fluid at the second pressure value to the at least one lift-off feature.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: March 6, 2018
    Assignee: United Technologies Corporation
    Inventors: Kevin Duffy, Ronald K. Kovacik, Brady Walker, Antonio F. Artiles
  • Patent number: 9841141
    Abstract: A method includes providing a bearing housing configured to house a bearing, the bearing housing enclosing a free volume for receiving a lubricant and including a shaft in a shaft opening, filling the free volume with the lubricant, providing an exclusion seal between the shaft opening and the shaft, the exclusion seal being repeatably and non-destructively shiftable from a sealing state and a release state, the exclusion seal being shiftable from the sealing state to the release state by increasing a pressure in the bearing housing to above a first level and being shiftable from the release state to the sealing state by decreasing the pressure to below the first level; and continuously maintaining a film of the lubricant between the exclusion seal and the shaft by repeatedly causing the pressure of the lubricant in the free volume to rise above and fall below the first level.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: December 12, 2017
    Assignee: LINCOLN INDUSTRIAL CORPORATION
    Inventors: Paul George Conley, Bryan Uncapher, Joe T Inciong
  • Patent number: 9829110
    Abstract: A mechanical seal includes a pair of slide rings and a spring. Each slide ring has an outer circumferential surface, an inner circumferential surface and slide or seal surfaces at one axial end. Each pair of slide rings has a rotating slide ring and a stationary slide ring, the slide or seal surfaces of each pair of slide rings being in sliding and sealing contact with each other. The inner circumferential surface of one rotating slide ring includes a device to form lock the slide ring, by direct mechanical contact to a hub or a shaft of the flow machine and at least one sealing surface at a side of the device is configured to form lock, each of the slide rings, when assembled to the flow machine supported, in an axial direction by a seal ring to one of the hub and the shaft of the flow machine.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: November 28, 2017
    Assignee: SULZER MANAGEMENT AG
    Inventor: Heikki Manninen
  • Patent number: 9829134
    Abstract: A spoolable swivel, methods, and systems for coupling a first and second length of coiled tubing. The spoolable swivel can include an inner tubular element and an outer tubular element. The inner tubular element and the outer tubular element can both have dimpled distal ends and races on their proximal ends, defining one or more annular voids for swivel bearings.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: November 28, 2017
    Assignee: HALLIBURTON ENERGY SERVICES INC.
    Inventor: Scott Robert Greig
  • Patent number: 9810372
    Abstract: A bearing system includes a bearing housing configured to house a bearing and enclosing a free volume for receiving a lubricant, a bearing, a pump configured to pump lubricant into the free volume, a shaft in an opening in the housing rotatably supported by the bearing, an exclusion seal between the shaft opening and the shaft that is repeatably and non-destructively shiftable from a sealing state in which it substantially prevents lubricant from leaving the free volume and a release state in which it allows lubricant to escape between the exclusion seal and the shaft. The exclusion seal is caused to shift by increasing and decreasing a pressure in the bearing housing, and the system includes a controller configured to repeatedly shift the exclusion seal by raising and lowering the pressure in the free volume to continuously maintain a lubricating film between the exclusion seal and the shaft.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: November 7, 2017
    Assignee: LINCOLN INDUSTRIAL COPORATION
    Inventors: Paul George Conley, Bryan Uncapher, Joe T Inciong
  • Patent number: 9777842
    Abstract: A seal of a tool of a breaking hammer, a sealing arrangement, a breaking hammer and a method of sealing a tool of breaking hammer is provided. The seal is a sealing ring having an outer periphery provided with several projecting elements, which are slanted. The projecting elements generate torque in the sealing ring when being pushed in a transverse direction during use of the breaking hammer. Thus, the sealing ring may rotate relative to the tool.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: October 3, 2017
    Assignee: SANDVIK MINING AND CONSTRUCTION OY
    Inventors: Ossi Kahra, Jyrki Nissinen
  • Patent number: 9777773
    Abstract: A roller bearing seal includes an insert part and a polymer part connected to the insert part, and the insert part includes an annular-disc-shaped middle section having a radially inner deflection and a radially outer deflection, and a first ratio (L2/L1) of an axial length (L2) of the outer deflection to an axial length (L1) of the inner deflection is less than 0.65.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: October 3, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventors: Michael Reugels, Philipp Bernreuther, Claudio Foti, Héctor Villalobos
  • Patent number: 9644745
    Abstract: A mechanical seal (100) includes a sleeve (130) fixed to a rotating shaft (200), wherein the sleeve (130) has: a first annular portion (131) that has a step having an inner diameter and an outer diameter on a sealed fluid (F) side thereof that are larger than those of on an opposite side thereto, an inner peripheral surface of a small diameter portion (131a) on the first annular portion (131) is fitted on the rotating shaft (200), and a stationary ring (110) is disposed on the small diameter portion (131a), a rotating ring (120) is disposed between a large diameter portion (131b) and an inner peripheral surface of the rotating ring (120) is sealed, S2÷S1?1 is satisfied where S1 is a sliding area between the stationary ring (110) and the rotating ring (120), S2 is a pressure receiving area where the stationary ring (110) receives a pressure effect of the rotating ring (120) due to a pressure of the sealed fluid (F).
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: May 9, 2017
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventors: Nobuo Nakahara, Yasuhiro Ikeda
  • Patent number: 9618045
    Abstract: A strut bearing including an improved seal configuration is disclosed. The strut bearing includes an upper carrier including a first outer axially extending rim and a first inner axially extending rim, and a lower carrier including a second outer axially extending rim and a second inner axially extending rim. The first outer axially extending rim at least partially surrounds the second outer axially extending rim. A rolling bearing is supported between the upper and lower carriers. A seal includes at least one sealing lip and a reinforcement rim, and the at least one sealing lip is molded on to the reinforcement rim. The seal extends between the first outer axially extending rim of the upper carrier and the second outer axially extending rim of the lower carrier.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: April 11, 2017
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Bogyu Kang
  • Patent number: 9556869
    Abstract: A gear pump apparatus is equipped with a pump and a sealing mechanism which is made up of an outer member, an inner member, and a rubber member fit between the outer and inner members. The inner member has a pressure-exerted surface to which pressure, as produced by contact of the rubber member with the inner member arising from application of discharge pressure of the pump, is applied. The pressure-exerted surface has a flange which creates thrust to move the inner member away from the gear pump, thereby bringing the inner member against an inner wall of a pump casing to develop a hermetical seal between a high-pressure region and a low-pressure region within the pump casing. This eliminates the leakage of pressure and ensures torque required for a pumping operation of the pump.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: January 31, 2017
    Assignees: NIPPON SOKEN, INC., DENSO CORPORATION, ADVICS CO., LTD.
    Inventors: Takashi Hashiba, Naoki Hakamada, Kazunori Uchiyama, Takahiro Naganuma, Tomoaki Kawabata, Kunihito Ando
  • Patent number: 9534333
    Abstract: The present disclosure provides a drum type washing machine including a tub; a drum in the tub, configured to receive laundry; a motor coupled to the tub configured to rotate the drum; a spider configured to transfer torque from the motor to the drum, the spider including a shaft mount connected to a shaft of the motor, a plurality of arms radially extending from the shaft mount, and a plurality of supporting bars extending from the arms; a fixing member configured to fix or attach the drum to the spider; a plurality of slide guides in at least one of a side surface of the drum and the supporting bars; and a plurality of slide rails on another one of the side surface of the drum and the supporting bars, configured to be inserted into and/or slide along the slide guides, wherein the drum is movable in forward and backward directions of the tub.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: January 3, 2017
    Assignee: DONGBU DAEWOO ELECTRONICS CORPORATION
    Inventors: Ju Dong Lee, Jeong Hyeon Kim, In Dong Kim, Hye Ung Kim
  • Publication number: 20150130141
    Abstract: A mechanical seal includes an elastomeric member, a spring biasing device, a longitudinally floating first member having a seal face, a longitudinally non-floating second member and a longitudinally floating third member. The elastomeric member is in sealing engagement with the first member, second member and third member and the spring biasing device is longitudinally positioned between the first member and the second member. One of either the first member or the second member is provided with at least one protruding male portion and the other member of either the first member or the second member is provided with corresponding female portion into which the male portion locates.
    Type: Application
    Filed: November 13, 2014
    Publication date: May 14, 2015
    Applicant: AES ENGINEERING LTD.
    Inventors: Thomas Broadbent, Steven Cox
  • Publication number: 20150115539
    Abstract: The disclosure relates to an apparatus for sealing shafts, the apparatus comprising at least one device for positioning at least one first sealing means and a second sealing means on a shaft in a specified manner. At least the first sealing means has a partly elastic wall region for restricting a fluid passage out of a first region, in which a fluid is provided, into a second region, from which the shaft is sealed by the first region. The wall region forms an opening through which the shaft is guided, the diameter of the opening being variable dependent on the diameter of the shaft, and the second sealing means lies over the first sealing means so as to contact same at least in some regions in order to seal the fluid passage.
    Type: Application
    Filed: April 26, 2013
    Publication date: April 30, 2015
    Inventors: Norbert Guenther, Guenther Eggert, Robert Engel, Toralf Genz
  • Publication number: 20150028663
    Abstract: A wheel bearing has a seal device formed as a pack seal with an annular sealing plate and slinger. The sealing plate has a metal core and an integrally adhered sealing member. The sealing member has a base portion, side lip and radial lip. The base portion covers an inner circumferential surface of the metal core. The radial lip slidingly contacts the cylindrical portion of the slinger. A garter spring is mounted on the radial lip. A tightening force of the garter spring is set to 50% or more of a total tightening force of the radial lip. The tightening force of the radial lip without the garter spring is set to 3 N or more.
    Type: Application
    Filed: October 13, 2014
    Publication date: January 29, 2015
    Inventors: MAKOTO SEKI, Tomoko Baba
  • Patent number: 8887829
    Abstract: Disclosed herein is a hydraulic hand tool. The tool includes a frame, a hydraulic drive, a drive shaft, and a seal assembly. The hydraulic drive is connected to the frame and includes a housing. The drive shaft extends from the hydraulic drive. The seal assembly is located between the drive shaft and the housing. The seal assembly includes a first seal member, a second seal member, and a carrier ring. The first seal member is in contact with the housing. The second seal member is in contact with the drive shaft. The carrier ring has an outer annular groove and an inner annular groove. The first seal member is located within the outer annular groove. The second seal member is located within the inner annular groove. The carrier ring includes a polymer material configured to elastically deform in response to a hydraulic load from hydraulic fluid at the hydraulic drive.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: November 18, 2014
    Assignee: Hubbell Incorporated
    Inventors: John W. Ayer, Mark A. Chiasson
  • Publication number: 20140197599
    Abstract: A sealing arrangement includes a double seal for sealing two chambers which are to be sealed off from one another and are each filled with a medium to be sealed. The double seal includes a first sealing ring disposed on a first side of the double seal and a second sealing ring disposed on a second side of the double seal. Each of the sealing rings has at least one dynamically stressed sealing lip contacting a surface to be sealed of a first machine element in a sealing manner. The sealing lips are arranged such that there is an axial distance between the sealing lips of the first and second sealing rings that are axially closest to one another. The first machine element is movable backwards and forwards in a translatory manner with a stroke. The axial distance is greater than the stroke.
    Type: Application
    Filed: January 14, 2014
    Publication date: July 17, 2014
    Inventors: Olaf Nahrwold, Thomas Jaeck, Markus Clemens, Ernst Jakob
  • Patent number: 8770589
    Abstract: A shaft-seal device for high-temperature fluid including a seal case (2) formed as a metallic cylindrical structure of a single unit and comprised of a main body portion (2a, 2b, 2c), first and second holding portions (2d, 2e), first and second partition portions (2f, 2h), a channel formation portion (2g) forming a minute annular channel (27) with the outer circumference surface of a rotary shaft (1), and an o-ring holding portion (2i). The seal case is installed in an apparatus housing (8) with first and second o-rings (2m, 2n) in between. The intra-seal case region (A1), in which sealing rings (31, 32, 41, 42, 51, 52) of mechanical seals (3, 4, 5) are provided, and the high-temperature fluid region, which is an intra-apparatus housing region (A), are partitioned by a cooling chamber (28) into and from which coolant (82) is supplied and discharged via feed/discharge coolant paths (80, 81).
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: July 8, 2014
    Assignees: Nippon Pillar Packaging Co., Ltd., Hitachi, Ltd.
    Inventors: Taiji Hashimoto, Tao Hu, Eiji Okumachi, Masanobu Ninomiya
  • Publication number: 20140035233
    Abstract: A mechanical seal includes a rotation ring provided with a vertical surface which is vertical to a central axis line of the rotation ring. A tapered surface includes a diameter on an outer circumferential side which decreases away from the vertical surface. A plurality of split bodies are positioned by sandwiching an outer circumferential side of the rotation ring between a support member that supports a side of the vertical surface and a presser member that presses the tapered surface. An elastic member is disposed between the support member and the vertical surface, so that the vertical surface is supported through the elastic member. A tapered surface is pressed in direct surface contact with an inner circumferential tapered surface of the presser member.
    Type: Application
    Filed: August 3, 2012
    Publication date: February 6, 2014
    Applicant: EAGLE INDUSTRY CO., LTD.
    Inventor: Hidekazu Takahashi
  • Patent number: 8622779
    Abstract: A sealing unit longitudinally comprises first and second sealing sub-units disposed around first and second portions of a driveshaft of a marine propulsion system of a watercraft. The first sealing sub-unit is sealingly connected to a front wall of the hull and the engine casing. The second sealing sub-unit is sealingly connected to the driveshaft and a crankshaft. The second sealing sub-unit is disposed at least partially inside the first sealing sub-unit. An inside of the first sealing sub-unit is in fluid communication with a water intake ramp. An inside of the second sealing sub-unit is in fluid communication with an interior of an engine. The first sealing sub-unit prevents fluid communication between the water intake ramp and a portion of an inside of the hull. The second sealing sub-unit prevents fluid communication between the engine, the inside of the hull, and the water intake ramp.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: January 7, 2014
    Assignee: Bombardier Recreational Products Inc.
    Inventors: Steve Brouillette, Michel Bourret, Charles Normand
  • Publication number: 20130320628
    Abstract: The invention relates to a slide ring seal, and in particular a running gear seal, including an angled slide ring and/or counter ring, the radial leg of which forms a sliding region, and the axial leg of which forms a. seating for a trapezoidal sealing element, which radially outside of the sliding region, is provided with a projection that at least partially overlaps the radial leg, forming a secondary seal, wherein at least in the region of the radial leg, the projection is provided with a profile, which is supported on the outer circumferential surface of the radial leg, forming anti-contamination lips in the installed state of the slide ring seal, and in particular running gear seal, that profile being supported on the outer circumferential surface of the radial leg When viewed in the axial direction.
    Type: Application
    Filed: January 20, 2012
    Publication date: December 5, 2013
    Applicant: FEDERAL-MOGUL BURSCHEID GMBH
    Inventor: Andreas Dengler
  • Publication number: 20130285330
    Abstract: A submersible motor pump includes a water jacket having a circulation passage of a coolant, a centrifugal impeller for circulating the coolant, a suction passage configured to provide fluid communication between the circulation passage and a fluid inlet of the centrifugal impeller, and a discharge passage configured to provide fluid communication between a fluid outlet of the centrifugal impeller and the circulation passage. The discharge passage includes a heat-exchange passage formed by two wall surfaces, one of which is constituted by a member which contacts a liquid conveyed by a main impeller. The heat-exchange passage has a circular shape extending radially outwardly from the fluid outlet of the centrifugal impeller. The heat-exchange passage includes at least one axial passage section having a length component in an axial direction of the rotational shaft.
    Type: Application
    Filed: June 24, 2013
    Publication date: October 31, 2013
    Inventors: Junya KAWABATA, Chikara MAKINO, Shunichi AIYOSHIZAWA
  • Publication number: 20130259679
    Abstract: A seal assembly forms a barrier between a compressor's interior and exterior regions. The seals assembly includes a primary seal stage and a secondary seal stage. The primary seal stage is formed of materials chosen to effectively block flow of gas through the seal assembly. The secondary seal stage is formed of materials chosen to survive a failure of the primary seal stage.
    Type: Application
    Filed: March 29, 2012
    Publication date: October 3, 2013
    Applicant: Solar Turbines Incorporated
    Inventor: Gordon E. Brailean
  • Patent number: 8511689
    Abstract: A shaft sealing apparatus of including a first mechanical seal having a mating ring disposed at the sealed fluid side and which rotates along with a shaft as the inner circumference side thereof is fixed to the shaft side, and a sealing ring disposed at the air side with respect to the mating ring and is slidable against the mating ring and which does not rotate along with the shaft. An annular space in which the sealed fluid exists is formed at the outer circumferential face side of the first mechanical seal. The shaft sealing apparatus further includes a protection cover disposed adjacent to the sealed fluid side of the seal cover in a state of being sealed with the seal cover and with the first mechanical seal respectively by an O-ring so as to suppress exposure of the seal cover to the sealed fluid.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: August 20, 2013
    Assignee: Eagle Industry Co., Ltd.
    Inventor: Hidekazu Takahashi
  • Patent number: 8506266
    Abstract: A process fluid handling device in an electrochemical cell system having a sealing system assembly between a process fluid compartment and a drive compartment of the fluid handling device. The sealing system includes a double seal configuration forming an interconnection compartment which is supplied with barrier fluid. The sealing system provides isolation of pressurized process fluids from the drive compartment.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: August 13, 2013
    Assignee: GM Global Technology Operations LLC
    Inventor: Ralph Hobmeyr
  • Publication number: 20130200569
    Abstract: A leaf seal effects a seal between two, coaxial, relatively rotating components. The leaf seal has an annular pack of stacked leaves or a plurality of axially arranged annular packs of stacked leaves. The or each pack is mountable to one of the components with its leaves extending towards the other component such that the leaf edges of the pack are presented for wiping contact with the other component. The leaf seal further has upstream and downstream coverplates at the respective axial ends of the seal. Each coverplate is spaced from the adjacent annular pack by a respective axial gap. When viewed in the axial direction, each coverplate covers at least a portion of the radial extent of the adjacent pack. The upstream and/or the downstream coverplate is flexible to axially deflect under differential pressures which the seal experiences in operation.
    Type: Application
    Filed: January 31, 2013
    Publication date: August 8, 2013
    Applicant: ROLLS-ROYCE PLC
    Inventor: ROLLS-ROYCE PLC
  • Patent number: 8388328
    Abstract: In an inner wall surface of a casing, grooves are formed that correspond to end faces of an outer rotor and an inner rotor, and seal members are disposed within the grooves, the seal members presses against the end faces of the outer rotor and the inner rotor. Inclined portions are provided in sealing portions of resin members of seal members, the sealing portions covering a closed portion. With this configuration, an internal pressure in the closed portion causes the inclined portions to separate from an outer rotor and an inner rotor when a brake fluid pressure within the closed portion increases to the point that the brake fluid is excessively compressed, releasing the brake fluid that is inside the closed portion. It is therefore possible to prevent the brake fluid pressure from increasing excessively within the closed portion.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: March 5, 2013
    Assignees: Advics Co., Ltd., Nippon Soken, Inc.
    Inventors: Takahiro Yamaguchi, Hiroyuki Shinkai, Takutou Takahashi, Kazunori Uchiyama, Naoki Hakamada
  • Patent number: 8382121
    Abstract: The present invention provides a cartridge type double seal having a size small enough to be mounted on the outer surface of an apparatus without using a space in a stuffing box and without requiring any special design and modification. In a seal device (1), a seal case (44) is fixed and installed by the set screw (18), screwed in radially inside from the far end of the mounting groove (15) of the seal cover (10) through the screw groove (17), at the innermost end of the seal cover (10). The thickness of thickness direction can be reduced because the seal case (44) is not axially supported and fixed.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: February 26, 2013
    Assignee: Eagle Industry Co., Ltd.
    Inventor: Yoshihiro Suefuji
  • Publication number: 20130015624
    Abstract: In a rotary shaft seal configured such that first and second seal elements (1) and (2) each having a fundamental thickness (T) and each curved through a curved wall portions (5) of a corresponding one of the first and second seal elements (1) and (2) to have a generally J-shaped cross section are arranged so as to be curved in opposite directions along a shaft center (L), a wide circumferential groove (7) is formed in each of opposed surfaces (6) of the respective curved wall portions (5) of the first and second seal elements (1) and (2). Under use conditions (where the seal is inserted), extreme end portions (8) of the first and second seal elements (1) and (2) are in contact with an outer circumferential surface (9a) of a rotary shaft (9) with a peak contact pressure such that a contact width (E) is equal to or less than twice the fundamental thickness (T).
    Type: Application
    Filed: December 24, 2010
    Publication date: January 17, 2013
    Applicant: MITSUBISHI CABLE INDUSTRIES, LTD.
    Inventors: Nobukazu Fujii, Hironori Oida
  • Publication number: 20120299247
    Abstract: A sealing device for a rotary feedthrough for receiving a rotating machine element whose outer side can be applied to another machine element, includes at least two sealing elements disposed in tandem in the axial direction of the machine element. Inner sides of the sealing elements are configured for forming an active sealing connection with the rotating machine element. At least one of the sealing elements can be pressurized with an additional force acting in the radial direction so that the force of compression acting on the rotating machine element for the at least one of the sealing elements can be adjusted relative to the force of compression acting on the rotating machine element due to at least one other sealing element.
    Type: Application
    Filed: July 30, 2012
    Publication date: November 29, 2012
    Applicant: VON ARDENNE ANLAGENTECHNIK GMBH
    Inventors: Hans-Juergen Heinrich, Ulf Seyfert, Peter Botzler
  • Publication number: 20120217703
    Abstract: An intershaft seal system capable of communicating a balanced pressure profile onto forward and aft faces along a piston ring is presented. Seal system includes forward and aft mating rings and a piston ring. Mating rings include a plurality of divergent flow grooves adjacent to the piston ring. Each divergent flow groove includes a pair of grooves which intersect at and are substantially symmetric about an apex. The piston ring includes channels which direct a fluid from a high pressure region upward, downward, or directly through the piston ring and onto the divergent flow grooves. The divergent flow grooves separate the fluid in a symmetrically divergent fashion prior to communication onto the piston ring. The divergent flow grooves communicate a substantially symmetric pressure force along the radial width of the piston ring so as to minimize twisting thereof, thus reducing wear along the piston ring and increasing seal life.
    Type: Application
    Filed: September 16, 2010
    Publication date: August 30, 2012
    Inventor: Glenn M. Garrison
  • Patent number: 8251301
    Abstract: An improved seal for use in fluid systems such as a water jet system includes an outer seal point that is very close to an inner seal point. By spacing these two seal points very close together, the force on the seal is greatly reduced compared to the prior art. In the disclosed embodiment, the outer seal point is on an angled forward face of the seal that abuts a back-up ring angled face. The inner seal point is between the seal and an internal shaft which rotates relative to a housing.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: August 28, 2012
    Assignee: NLB Corp.
    Inventors: Daniel D. Trunick, Matthew O. Herhold
  • Patent number: 8215644
    Abstract: A shaft sealing device includes a gland having a flange with an axial hole, a coolant inlet, and a coolant outlet. A shaft sleeve is extended through the axial hole and mounted around a rotary shaft. A plurality of flexible elements extend through a plurality of through-holes in a retainer and each include two ends respectively presaging against two friction ring assemblies, allowing joint rotation of the shaft sleeve and the rotary shaft. The retainer further includes a first tangent groove having an inner end in communication with the axial hole and an outer end in communication with the coolant inlet. The retainer further includes a second tangent groove having an inner end in communication with the axial hole and an outer end in communication with the coolant outlet. Each of the first and second tangent grooves has a width decreasing from the inner end toward the outer end.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: July 10, 2012
    Assignee: Scenic Precise Element Inc.
    Inventor: Cheng-Shiou Huang
  • Publication number: 20120163904
    Abstract: A pin joint assembly for a machine includes a seal assembly having first and second seal rings and first and second gaskets or toric load rings. The first and second seal rings each have a loading surface and a sealing face. The first and second seal rings abut one another such that the sealing faces are in contacting relationship with each other. The first load ring engages a load ring engagement surface of a collar and the loading surface of the first seal ring. The second load ring engages a load ring engagement surface of a bushing and the loading surface of the second seal ring. At least one of the load ring engagement surface of the collar and the loading surface of the first seal ring is adapted to retain the first load ring in proximal relationship to the sealing face of the first seal ring.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 28, 2012
    Applicant: CATERPILLAR INC.
    Inventors: Simon S. Liang, Roopam Khare
  • Publication number: 20120068413
    Abstract: A sealing arrangement comprising first and second machine elements which can turn relative to one another and delimit an installation space to be sealed for a sealing ring. The sealing ring has at least one static sealing area, which is connected, in a form-locking manner, by an anchoring bead, with a congruently shaped first indentation in the first machine element. The sealing ring has at least one dynamic sealing area with at least one first sealing lip that touches a first undercut of the second machine element with a sealing effect. The dynamic sealing area has at least one second sealing lip, which is connected with the first sealing lip by a connecting piece.
    Type: Application
    Filed: September 7, 2011
    Publication date: March 22, 2012
    Applicant: CARL FREUDENBERG KG
    Inventors: Georg PUTT, Matthias MESSER, Katrin KLEIN
  • Publication number: 20120043725
    Abstract: An intershaft seal for inner and outer coaxial shafts which rotate relative to each other. The seal is located in an annular space between the shafts and maintains an axial pressure differential between a fluid pressure on the first side of the seal and a fluid pressure on the other, second side of the seal. The seal comprises a sealing ring which is coaxial with the shafts and which forms a sealing contact with the outer shaft to maintain the pressure differential.
    Type: Application
    Filed: July 22, 2011
    Publication date: February 23, 2012
    Applicant: ROLLS-ROYCE PLC
    Inventors: INGO H. J. JAHN, Gavin M. ROWNTREE
  • Patent number: 8113545
    Abstract: A rotary joint having a stationary section (60) having a fluid path (6) in which sealed fluid flows; a sleeve (30) having in it a second connection fluid path (6C) in which the fluid from the fluid path flows, rotatable relative to the stationary section, and made of a rustless material; a rotary seal ring (2) having a first connection fluid path (6B) that has an inner peripheral surface fitting on the outer peripheral surface of the sleeve so as to be connectable to the second connection fluid path, having a first seal surface (2A) on one side face of the rotary seal ring (2), and having a second seal surface (2B) on the other side face of the rotary seal ring (2); a first stationary seal ring (10) having a first relative seal surface (10S) in intimate contact with the first seal surface; and a second stationary seal ring (11) having a second relative seal surface (11S) in intimate contact with the second seal surface and enabling the fluid path and the first connection fluid path to be connection to a space
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: February 14, 2012
    Assignee: Eagle Industry Co., Ltd.
    Inventor: Hidekazu Takahashi