Flexible Sleeve, Boot, Or Diaphragm Patents (Class 277/391)
  • Patent number: 10968918
    Abstract: Wear rings for electric submersible pump (ESP) stages are provided. An example ESP has one or more running clearance seals reinforced with high-hardness wear rings. Ceramics and carbides may provide the high hardness for the wear rings, but such substances are more brittle than metals and have different coefficients of thermal expansion than metals. For protection, each high-hardness wear ring may be mounted with an elastic cushioning scheme. The elastic mounting preserves each wear ring from shock, stress, and breakage from thermal expansion and contraction of an adjacent pump part. Each high-hardness wear ring may also have a low-stress driving mechanism that cushions the rotational force imparted to the wear ring when the ESP pump is being powered. In some implementations, the elastic mounting scheme may also serve as the low-stress driving mechanism for the high-hardness wear ring.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: April 6, 2021
    Inventors: Arthur I. Watson, David Milton Eslinger
  • Patent number: 10941784
    Abstract: A centrifugal pump (1) includes a pump casing and a shaft (11) which is rotatably mounted therein and on which an impeller (10), for delivering fluid, is arranged rotationally fixed. A cartridge shaft seal (13) is arranged between the shaft (11) and an opening (16) of the casing, through which opening the shaft (11) is led. The cartridge shaft seal (13) includes a sleeve (22) which surrounds the shaft (11) at least in the region of the opening 16 and which is connected to the shaft (11) releasably and rotationally fixed, by way of a clamping device (29) which is arranged on the outer side of the sleeve (22). The clamping device (29) includes clamping jaws (32) which only engage on the outer side of the sleeve (22) and non-positively connect the sleeve (22) to the shaft (11).
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: March 9, 2021
    Inventors: Erik Bundesen Svarre, John Frigård Nielsen, Lars Skov
  • Patent number: 10352449
    Abstract: A mechanical seal has a stationary side seal ring and a rotating side seal ring in opposed sliding contact with the stationary side seal ring. One seal ring of the stationary side seal ring and the rotating side seal ring is disposed on a sealed fluid side and constitutes a slide bearing which supports the rotating shaft. The other seal ring is disposed on the opposite side to the sealed fluid side, and a pressing member is attached to the other seal ring for biasing the other seal ring in the axial direction to press sealing faces of both the seal rings.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: July 16, 2019
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventor: Masatoshi Itadani
  • Patent number: 10113644
    Abstract: A shaft seal assembly and method for pressure relief in a shaft seal assembly includes a stator having a static seal and a rotor rotatable relative to the stator that has a rotating seal. The static seal has an end face in sealing engagement with an end face of the rotating seal. At least one of the static seal and the rotating seal includes an annular passage defined in the respective end face and at least one axial passage extending through the respective seal. Lubricant drains and fills through the at least one axial passage and the annular passage at the sealing surfaces of the end faces. The end faces maintain sealing engagement during rotation of the rotor.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: October 30, 2018
    Inventors: Charles Taylor, Jesse Slagell, Ron Thomas
  • Patent number: 10054165
    Abstract: A wheel bearing unit includes a wheel hub, a first rolling-element bearing, and a fastener assembly, and the fastener assembly is formed separately from the wheel hub and is spaced from an axial end of the wheel hub. The fastener assembly secures at least one component of the rolling-element bearing against falling out of the wheel hub away from a center of mass of the wheel bearing unit, and the fastener assembly contacts the wheel hub.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: August 21, 2018
    Inventors: Rico Dittmar, Achim Mueller, Volker Wendt
  • Patent number: 9770832
    Abstract: An adjustable cable fitting for a thru-arm cable of a robotic welding torch includes a female member formed of an elongated tubular body having a forward end, a rear end, and a through hole extending axially from the forward end to the rear end. The forward end includes a nose portion for connection to a welding cable. A male member is cooperable with the female member in a telescoping manner. The male member includes a shaft received in the through hole of the female member, a receiver connected to the shaft for receiving a power pin, and a through hole extending axially through the shaft and receiver. A nut is disposed on the shaft for locking a position of the shaft relative to the female member. Adjustment of a disposition of the male member relative to the female member varies an effective length of the power cable.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: September 26, 2017
    Assignee: Illinois Tool Works Inc.
    Inventors: Romeo N. Cossette, Jeffrey G. Wells
  • Patent number: 9765893
    Abstract: A ball joint dust cover is provided. The ball joint dust cover is made of a rubbery elastic material and is provided with a small diameter opening part with which a hard ring is formed. The hard ring is sandwiched by a retainer having a three-sided box shape. The retainer includes a plurality of gaskets contacting the hard ring.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: September 19, 2017
    Assignee: NOK Corporation
    Inventor: Tatsuro Hosen
  • Patent number: 9581248
    Abstract: To provide a mechanical seal in which degradation or tearing of a bellows does not occur, the spring constant of the bellows is reduced, and the fluctuation in the load due to stretching and contracting of the bellows is reduced. An inside-type mechanical seal includes a sleeve fixed to a rotating shaft, and a cartridge fixed to a housing. A rotation-side sealing ring is provided to the sleeve. A fixed-side sealing ring, which slides against the rotation-side sealing ring, and a bellows for axially urging the fixed-side sealing ring is provided to the cartridge. The bellows is made from a metal; and the metal bellows has one end fixed to a case for holding the fixed-side sealing ring and another end fixed to the cartridge. The plate thickness of the metal bellows is set so as to be smaller than the plate thickness of the case or the cartridge.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: February 28, 2017
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventors: Masatoshi Itadani, Takashi Shinomiya, Yoshihiro Ogawa
  • Patent number: 9476314
    Abstract: A dry seal apparatus (30) for a machine (10) includes a seal having a stationary portion (40) and a rotating portion (38); a space (44) disposed between the stationary and rotating portions; a biasing member (42) disposed proximate the stationary portion (40) and in contact therewith for applying a force to the stationary portion; and a labyrinth (37) proximate the rotating portion (38) and constructed and arranged for receiving a liquid for being vaporized before entering the space between the stationary and rotating portions of the seal. A related method is also provided.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: October 25, 2016
    Assignee: Cryostar SAS
    Inventors: Sebastien Besson, Bruno Brethes
  • Patent number: 9447885
    Abstract: A double mechanical seal device, comprising a rotating ring, a first static ring, a second static ring, and a seal cover. A first bellows seal device is provided between the first static ring and the seal cover, and the first bellows seal device comprises a first bellows part capable of expanding and contracting in an axial direction, a first cover-side adapter, and a first static ring-side adapter. The first bellows seal device and the first static ring are disposed so that in a state where there is no pressure difference between the inside and outside of the first bellows part, a balance line of the first bellows part passes through a cross section of an O ring and a first static seal surface.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: September 20, 2016
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventor: Yoshihiro Suefuji
  • Patent number: 9139277
    Abstract: A multi-stage watertight chamber is provided in this invention. The multi-stage watertight chamber comprises a first rotary seal, a second rotary seal, a first housing, a second housing, and an integrated shaft. The first and second rotary seals withstand external pressure to make sure watertight status is achieved when the integrated shaft rotates. The first housing forms a first watertight chamber. The integrated shaft protrudes through the first housing via the first rotary seal. The second housing is placed outside and adjacent to the first housing and forms a second watertight chamber. The first watertight chamber contains devices that must be isolated from liquid outside the first and second housings. The second watertight chamber is used to store water seeped through the second rotary seal and avoid causing damage directly to components and apparatus inside the first watertight chamber.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: September 22, 2015
    Inventor: Chien-Chung Kang
  • Patent number: 8925332
    Abstract: A seal assembly for a turbojet nacelle includes a first end fastened to a first structure, and a second end contacting against a bearing zone of a second structure. The seal assembly further includes a plurality of adjacent blades arranged along the first end and extending longitudinally and perpendicularly thereto. In particular, a portion of the blades has an accordion-shaped structure.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: January 6, 2015
    Assignee: Aircelle
    Inventors: Stephane Beilliard, Alexandre Phi
  • Publication number: 20140319774
    Abstract: A seal designed for insertion between a rotating shaft and a fixed casing having an opening through which the shaft is fitted, the seal having a sleeve designed to fit onto the shaft; a first sealing ring fitted to the sleeve; a cup designed to fit inside the opening; and a second sealing ring connected to the cup by a bellows of elastomeric material; the first and second sealing rings cooperate frontally with each other under the axial load exerted by a spring interposed between the cup and the second sealing ring; and the bellows is connected in angularly free manner to the cup to prevent self-induced torsional oscillation and noise resulting from it.
    Type: Application
    Filed: April 29, 2014
    Publication date: October 30, 2014
    Inventors: Massimiliano BORASSO, Alessandro VENTURA, Massimiliano FERRI
  • Patent number: 8777229
    Abstract: A liftoff carbon seal assembly includes a rotating seal plate adjacent to a rotating seal backer plate and a rotating seal plate retainer. The rotating seal plate defines a rotating seal plate face which extends beyond a rotating seal plate retainer face of the rotating seal plate retainer with a static carbon seal is adjacent to the rotating seal plate.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: July 15, 2014
    Assignee: United Technologies Corporation
    Inventor: Todd A. Davis
  • 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
  • Patent number: 8622396
    Abstract: A rotary aircraft exhaust system having an engine, an exhaust member in gaseous communication with the engine, and a longitudinally compressible bellow seal in sealing contact with both the engine and the exhaust member. The bellow seal is configured to provide a gaseous seal between the engine and the exhaust member while also allowing the exhaust member to move in the transverse, longitudinal, and pivoting directions relative to the engine.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: January 7, 2014
    Assignee: Textron Innovations Inc.
    Inventor: Thomas M. Mast
  • Patent number: 8517388
    Abstract: A bellows type mechanical seal is provided that is capable of reducing adverse effects on the bellows. The bellows type mechanical seal includes a first annular member fixed on a rotary shaft, a second annular member resiliently supported by the bellows in a housing axially to the outside of the first annular member, a seal ring having a first end seal face contacting the first annular member and a second end seal face contacting the second annular member, both seal faces being perpendicular to the shaft. A centering member is arranged contacting the inner surface of the seal ring and the inner surface of the second annular member within an annular space formed between both of the inner surfaces and the shaft to keep the sealing ring and the second annular member in alignment with each other.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: August 27, 2013
    Assignee: Eagle Industry Co., Ltd.
    Inventor: Hidekazu Takahashi
  • Patent number: 8157267
    Abstract: A seal system is adapted for use in gas flow systems. The seal system has two seal faces and a longitudinally compressible seal spring-biased between the seal faces. The seal has a bellows configuration and opposite ends in sealing contact with the seal faces, such that at least one end of the seal is free to move relative to the corresponding seal face while maintaining the sealing contact. The seal system is particularly suited for use in sealing an engine to an exhaust member.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: April 17, 2012
    Assignee: Textron Innovations Inc.
    Inventor: Thomas M. Mast
  • Publication number: 20120013077
    Abstract: A bellows type mechanical seal including a sealing ring and a mating ring, wherein either one of the sealing ring or the mating ring is retained in a housing and the other one is mounted on a shaft and wherein the sealing ring is supported by a bellows and the bellows has a retainer welded thereto on one of the sides for retaining the sealing ring and a collar welded on the other side to form a bellows assembly, is characterized in that the entire surface of the bellows assembly is covered by an erosion-resistant film formed by the physical vapor deposition, such as ion-plating.
    Type: Application
    Filed: March 11, 2010
    Publication date: January 19, 2012
    Applicant: EAGLE INDUSTRY CO., LTD.
    Inventor: Hidekazu Takahashi
  • Publication number: 20120013076
    Abstract: A bellows type mechanical seal is provided that is capable of reducing adverse effects on the bellows. The bellows type mechanical seal includes a first annular member fixed on a rotary shaft, a second annular member resiliently supported by the bellows in a housing axially to the outside of the first annular member, a seal ring having a first end seal face contacting the first annular member and a second end seal face contacting the second annular member, both seal faces being perpendicular to the shaft. A centering member is arranged contacting the inner surface of the seal ring and the inner surface of the second annular member within an annular space formed between both of the inner surfaces and the shaft to keep the sealing ring and the second annular member in alignment with each other.
    Type: Application
    Filed: March 30, 2010
    Publication date: January 19, 2012
    Applicant: Eagle Industry Co., Ltd.
    Inventor: Hidekazu Takahashi
  • Patent number: 7857320
    Abstract: A bearing isolator seal is used to seal the space between the housing and the rotating shaft to prevent contaminants such as abrasive particles, moisture, and corrosive media from entering the bearing. The preferred embodiment consists of a stationary retainer ring with a groove for an O-ring adjacent to a bearing housing, a rotating mating ring with a groove for a second O-ring adjacent to a rotating shaft, and a floating ring made of a material with a low coefficient of friction and a low elastic modulus. The cross-section of the floating ring can be Z-shaped, U-shaped, or V-shaped. A C-shaped locking ring is used as an aid to assemble the aforementioned seal components into a module and is subsequently removed after the seal is installed. Contaminants are stopped at both ends of the floating ring as well as at the O-rings by their spring action. The seal is also designed to release pressure built up in the bearing lubricating system.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: December 28, 2010
    Inventor: Ming S. Chang
  • Patent number: 7789636
    Abstract: A turbomachine, particularly an exhaust gas turbocharger, comprising a compressor wheel arranged in a compressor housing, a turbine wheel arranged in a turbine housing, and a rotor shaft which is guided in a bearing casing and which has fastened thereto the compressor wheel on the one hand and the turbine wheel on the other hand, a rotor-shaft seal being arranged between a turbine-sided end portion of the bearing casing and the rotor shaft.
    Type: Grant
    Filed: February 3, 2006
    Date of Patent: September 7, 2010
    Assignee: BorgWarner, Inc.
    Inventors: Sven Liebl, Bruno Ferling, Dirk Frankenstein
  • Patent number: 7727133
    Abstract: Apparatus for creating a seal between an axle journal and a bearing housing is disclosed, particularly for use in apparatus for dewatering or washing material suspensions. The apparatus includes a stator ring, a pair of diagonally disposed guide pins supporting the stator ring with respect to the bearing housing so that the stator ring can be angled in a plane with respect to the pair of guide pins, a sealing ring for creating a seal between the stator ring and the axle journal, a bellows for creating a seal between the bearing housing and the stator ring, and at least one resilient member for urging the stator ring in abutment against the sealing ring.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: June 1, 2010
    Assignee: Metso Paper, Inc.
    Inventors: Jörgen T. Lundberg, Fredrik Pontén
  • Publication number: 20090085300
    Abstract: A mechanical seal having a seal cover capable of being installed on the outer surface around the circumferential surface of a hole of a seal housing and having an inner circumferential surface surrounding a shaft; a bellows having a first installation portion and a second installation portion, the first installation portion being formed by sealingly fitting the inner circumferential surface of the seal cover to one end circumferential surface of the bellows, the seconds installation portion being at the other end circumferential surface of the bellows, the first installation portion and the second installation portion forming a tubular portion between the portions, the tubular portion being formed as an elastic means surrounding the shaft; a stationary sealing ring sealingly installed on the circumferential surface of the second installation/portion and having an annular sealing surface pressed by the elastic means of the bellows; a rotating sealing ring having an annular relative sealing surface facing the s
    Type: Application
    Filed: June 14, 2006
    Publication date: April 2, 2009
    Inventor: Hidekazu Takahashi
  • Publication number: 20090058012
    Abstract: A laser transmitter, includes a transmitter case defining an opening therein, and a laser generating unit extending from said opening in said transmitter case. The laser generating unit has a non-rotatable portion and a rotatable laser head. The rotatable laser head is rotatable around a rotation axis. A flexible bellows seal surrounds the laser generating unit in said opening. The flexible bellows seal extending from the edge of the opening to the non-rotatable portion of the laser generating unit and defines a plurality of annular pleats. The pleats are spaced generally in the direction of the rotation axis of said rotatable laser head. This transmitter seals out dirt and water and eliminates the opportunity for dirt and water to collect on the seal.
    Type: Application
    Filed: August 31, 2007
    Publication date: March 5, 2009
    Inventor: Trent Edward Walters
  • Patent number: 7431303
    Abstract: A mechanical face seal, for sealing about a rotating shaft, includes a seal head assembly in sealing engagement with a seal seat assembly. The seal seat assembly has a washer with a portion that is sandwiched between a grommet and a seal seat. Another portion of the washer is sandwiched between a sleeve or shoulder on the shaft and an impeller. Frictional heat generated by the seal can be conducted away from the seal seat to the sleeve or shoulder on the shaft, which is particularly advantageous when the face seal is operated without water adjacent to the seal seat.
    Type: Grant
    Filed: January 14, 2004
    Date of Patent: October 7, 2008
    Assignee: Freudenberg-NOK General Partnership
    Inventor: John Dahlheimer
  • Patent number: 7431304
    Abstract: A face seal is provided with a constriction ring around a rubber boot that constricts the normal outward bulging of the flex section of the rubber boot as it folds and tries to roll forward over itself during axial deflection. The constriction caused by the constriction ring provides for increased frictional hysteresis during compression and decompression of the boot flex section. This increased hysteresis increases the dampening capacity of the seal design and, therefore, reduces undesired vibrations and seal noise generation.
    Type: Grant
    Filed: November 17, 2005
    Date of Patent: October 7, 2008
    Assignee: Freudenberg-NOK General Partnership
    Inventor: John C. Dahlheimer
  • Patent number: 7344356
    Abstract: A mechanical seal having a stationary ring and a rotating portion. The rotating portion includes a runner adjacent the stationary ring, an elastomer bellows adjacent the runner, a spring retainer plate and a spacer positioned between the elastomer bellows and the spring retainer plate. The spacer sets and maintains the elastomer bellows in proper position adjacent the runner.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: March 18, 2008
    Assignee: Wood Group ESP, Inc.
    Inventors: Steven Alan Howell, Edward Gross
  • Publication number: 20080048400
    Abstract: A mechanical face seal includes an elastomeric boot including a bellows portion extending radially from a tube portion. The tube portion includes a flanged end having a tapered surface on a leading end and a flat surface on a trailing end. A spring is disposed around the tube portion and has a first end disposed against the boot. A seal washer is disposed around the tube portion and engages a second end of the spring. The seal washer includes a radially outwardly extending portion that engages the bellows portion. A seal seat is disposed around the tube portion and has a face surface that is engaged by the seal washer. The seal seat is supported by a grommet having a retention lip for engaging the tube portion.
    Type: Application
    Filed: August 28, 2006
    Publication date: February 28, 2008
    Applicant: Freudenberg-NOK General Partnership
    Inventor: John C. Dahlheimer
  • Patent number: 7334799
    Abstract: A sealing device has a seal ring and a cylindrical bellows portion connected to the seal ring. The cylindrical bellows portion has a corrugated outer surface. A turbocharger utilizing the sealing device has a turbine wheel connected to a shaft and a compressor wheel connected to the shaft. The sealing device is sealingly engaged with the shaft. The sealing device provides a seal between a bearing housing of the turbocharger and either a turbine housing or a compressor housing.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: February 26, 2008
    Assignee: Caterpillar Inc.
    Inventor: Stephen J. O'Hara
  • Patent number: 7316762
    Abstract: The present invention features a flange to flange dynamic seal and sealing system, particularly suited for use within high temperature, high pressure environments, such as a delayed coking process. The dynamic flange seal and sealing system comprises two primary elements or seals, each of which are capable of independently forming a flange seal between two flanged components or combining to create a flange seal. Specifically, these primary seals are an iconel bellows seal and a bi-material gasket, each of which surround a flange opening along a sealing surface. The flange seal created by the dynamic flange seal and sealing system is capable of being maintained in light of, or rather the sealing system adapts to, any structural or environmental changes within the connected flanges. As such, the flange seal may be a dynamic flange seal or a static flange seal or both.
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: January 8, 2008
    Assignee: Curtiss-Wright Flow Control Corporation
    Inventor: Ruben F. Lah
  • Patent number: 7125019
    Abstract: The invention relates to a single seal, and more specifically to a seal for a rotary shaft extending through a wall, e.g. that of a pump housing. The single seal exhibits one single sealing location between a stationary and a rotating sealing ring. The seal is attached by means of a flange (12) on to the wall in order to seal off a chamber inside the wall against the shaft (22) and towards the exterior. According to the invention, the sealing rings (1, 2) are biased against each other by means of an axially movable member (5) extending through the wall in order to increase the contact between the sealing rings (1, 2). The resilient member may be a slitted sleeve (5) or a coil spring.
    Type: Grant
    Filed: February 13, 2003
    Date of Patent: October 24, 2006
    Assignee: Huhnseal AB
    Inventor: Göran Anderberg
  • Patent number: 7077645
    Abstract: A longitudinal sealing (20), which, as a rule, extends below the rotating tube (30), is proposed to increase the heating efficiency in a rotary tubular kiln, in which a rotating tube (30) is surrounded, like a bowl, by heating tunnel (32) and is indirectly heated by a heating medium. It is designed in the shape of a separation wall between the entry side (38) and the exit side (40) for the heating medium in the heating tunnel and consists of a rigid part (22) and a flexible part (24), situated thereon and adaptable to the rotating tube profile.
    Type: Grant
    Filed: February 6, 2004
    Date of Patent: July 18, 2006
    Assignee: VTA Verfahrenstechnik und Automatisierung GmbH
    Inventors: Gaston F. V. Vangilbergen, Harry F. Werner
  • Patent number: 7070186
    Abstract: A flanged boot having a rolling bearing interface suitable for connection to two mechanical components which are movable with respect to each other, in terms of both rotational and axial movements. The flanged boot has a first annular flange at one end and a second annular at the other end. A rolling bearing, such as for example a roller (needle) or ball bearing, is press-fit onto a suitably configured structure of a first mechanical component. One of the first and second annular flanges is interfaced sealingly with respect to the rolling bearing. The other of the first and second annular flanges is sealingly connected to a second mechanical component. Either of the first or second mechanical components may be considered to be moving relative to the other.
    Type: Grant
    Filed: June 19, 2003
    Date of Patent: July 4, 2006
    Assignee: General Motors Corporation
    Inventor: Steve W. Creek
  • Patent number: 6962340
    Abstract: A primary technical goal of the present invention is to improve the durability and the seal performance of a cup gasket for a mechanical seal device which retains a seal ring. The mechanical seal device disposes a cup gasket made of a resilient rubber material between the mounting surface of the first seal ring and the step shoulder installation surface in which the cup gasket retains a support plate in an integral manner and the support face of the support plate facing opposite relative to and in approximately parallel with the mounting surface of the seal ring.
    Type: Grant
    Filed: April 23, 2003
    Date of Patent: November 8, 2005
    Assignee: Eagle Industry Co., Ltd.
    Inventor: Hideki Maruyama
  • Patent number: 6918593
    Abstract: A primary technical goal of the present invention is to provide a mechanical seal device in which a manufacturing cost of the parts is decreased, a satisfactory seal performance is exhibited even under severe operating conditions, and the device can be easily mounted outside relative to the housing.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: July 19, 2005
    Assignee: Eagle Industry Co., Ltd.
    Inventor: Hidekazu Takahashi
  • Patent number: 6866271
    Abstract: A sealing device for use with a drive shaft of a water vessel. The sealing device comprises a housing for a seal and bearing, a compression ring, a lip seal flange attachment and a diaphragm for tracking the movement of the shaft. The diaphragm is made of a resilient, flexible material and is operatively connected to the seal housing. In operation, the diaphragm tracks the motion of the drive shaft so that the drive shaft may move freely in the hull of the vessel. The diaphragm allows the rigid seal housing to also move in response to any axial, lateral or circular-axial (wobble-like) movement of the shaft so that a constant seal around the shaft is provided.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: March 15, 2005
    Assignee: Duramax Marine, LLC
    Inventor: George MacDonald
  • Patent number: 6796563
    Abstract: A hermetic seal (10) for a limited rotation device (12) includes a plurality of vertical convolutes (18) bonded to a device housing (16) at their respective first ends (19). At their respective second ends (21), plurality of the vertical convolutes (18) are bonded to a plurality of horizontal convolutes (20). The plurality of horizontal convolutes (20) are bonded to a device shaft (14) at an end opposite of the plurality of vertical convolutes (18). The plurality of vertical convolutes (18) stretch in order to provide limited rotation and the horizontal convolutes (20) expand or contract to accommodate length changes of the plurality of vertical convolutes (18). The hermetic seal (10) permits limited rotation while defining a barrier (26) and preventing viscous fluid leakage to an external environment.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: September 28, 2004
    Assignee: Honeywell International Inc.
    Inventors: Dale T. Ruebsamen, Steve L. Hadden, Toren S. Davis
  • Patent number: 6773017
    Abstract: The invention is a single-piece seal assembly comprising an annular seal body. A retainer is positioned at a first end of the seal body. A rotable seal is concentric with the retainer and has a notch positioned on an inner diameter of a first face of said rotable seal. In the notch is positioned a single shim. The shim is of a length such that it is capable of providing a selected seal compression. An annular bellows having first and second ends is affixed to an inner diameter of the seal body. On the first end of the bellows is a ring holder. The ring holder holds a ring seal.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: August 10, 2004
    Assignee: Pittsburgh Cryogenic Services, Inc.
    Inventor: Carl J. Henningson
  • Patent number: 6758707
    Abstract: A mounting support (100, 200) for a marine vessel inboard drive propulsion system used in connection with a precision driveline includes a substantially cylindrical housing (107), one or more bearing assemblies (113) positioned within the cylindrical housing (107) for promoting rotation of a drive shaft (103) and one or more seals (119) typically located at both ends of the housing (107) for preventing water from contacting one or more of the bearing assemblies (113).
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: July 6, 2004
    Assignee: Acme Marine Group, L.L.C.
    Inventor: Timothy Patrick Creighton
  • Publication number: 20040100032
    Abstract: The invention relates to a pneumatic-suspension assembly, consisting of at least one pair of pneumatic-suspension bellows (2), a cover (5) comprising a first connection area (6), a rolling piston and an external guide (10). The inventive pneumatic-suspension assembly is characterized in that a continuous pleated bearing (11) connects the cover (5) to the external guide (10) and surrounds the pneumatic suspension bellows (2), whereby the pleased bearing comprises the following components: a first retaining part (13), which is fixed together with the corresponding end of the bellows (12) to the cover (5) in the first connection area (6); a second retaining part (14), which encompasses at least one partial area of the outer surface of the eternal guide (10); and a system of pleats (1), which is located between the first and second retaining part (13, 14) and which comprises at least a first and a second pleat (15, 16) that run towards the interior of the assembly, forming at least one contraction (17).
    Type: Application
    Filed: June 11, 2003
    Publication date: May 27, 2004
    Inventors: Michael Webber, Thomas Rolewicz
  • Publication number: 20040086821
    Abstract: The invention is based on the problem of designing an endless sealing ring for the end wall seal of rotary kilns so that it guarantees a high degree of sealing effectiveness with simpler assembly. The most desired features are small tolerances for cross section and diameter. Rotary-kiln end-wall seals according to the invention should exhibit very low wear and tear if possible and have a service life that corresponds to the maintenance intervals of the rotary kiln as much as possible.
    Type: Application
    Filed: January 17, 2003
    Publication date: May 6, 2004
    Inventors: Peter H. Raichle, Harry F. Werner
  • Publication number: 20040070151
    Abstract: An axial shaft seal disposed between a housing wall and a rotating shaft includes an outer ring insertable into the housing wall in a stationary and sealing manner and an inner ring connectable to the shaft in a non-twisting and sealing manner. The outer ring includes a sleeve having a polymer material extending radially inward and having a spring bellows form. A radially inward end portion of the sleeve has a first sealing surface. The inner ring includes a ring flange extending radially outward so as to provide a second sealing surface for axially mating the first sealing face.
    Type: Application
    Filed: June 25, 2003
    Publication date: April 15, 2004
    Applicant: Carl Freudenberg KG
    Inventors: Thomas Klenk, Eberhard Bock, Thomas Kramer, Werner Hufnagel, Martin Heldmann, Markus Clemens, Gilbert Pataille
  • Publication number: 20040066005
    Abstract: A seal has a metallic body having a convoluted cross-section extending between first and second ends and a first generally interior surface extending between the first and second ends and a second generally exterior surface extending between the first and second ends. An adhesive is located in one or more locations on at least one of the surfaces, the adhesive holding the body in a longitudinally contracted condition. There are related methods of manufacture. In related methods of use, the adhesive is caused to release, allowing the seal to expand toward the relaxed condition.
    Type: Application
    Filed: August 8, 2003
    Publication date: April 8, 2004
    Inventors: Peter G. Amos, D. Gregory More, Ian W. Boston
  • Publication number: 20040017046
    Abstract: A constant velocity joint boot for use with a constant velocity joint and an interconnecting shaft comprising a body portion having a central inner cavity defined by an inner wall, the inner cavity having a circumference smaller than the circumference of the interconnecting shaft, an outer wall defining at least one convolute, the body portion also including a first end having a mating surface contacting the constant velocity joint and a second end disposed opposite the first end and contacting the interconnecting shaft, wherein the body portion is manufactured from a foam based material.
    Type: Application
    Filed: January 5, 2001
    Publication date: January 29, 2004
    Inventors: Richard D. Frazer, Toshitaka Asai
  • Publication number: 20030230851
    Abstract: A mechanical seal comprises a drive end, a seal face holder with a seal face inserted into the seal face holder. A metal bellows stack is located between the drive end and the seal face holder, and a drive sleeve is secured to the drive end. The drive sleeve is a separate component to the drive end and the drive sleeve is located radially inwardly of the metal bellows stack.
    Type: Application
    Filed: March 18, 2003
    Publication date: December 18, 2003
    Inventors: Alan James Roddis, Christopher Newton
  • Publication number: 20030227138
    Abstract: A plate metal connecting cap (11) having an annular sleeve (12) for fixing a convoluted boot or rolling boot to the outer joint part of a constant velocity universal joint, wherein the outer joint part forms a circular-cylindrical seat face with a given diameter for the annular sleeve, wherein the sleeve (12) comprises face portions whose inner diameter is greater than the given diameter of the seat face of the outer joint part and wherein the sleeve (12) includes inner formations whose inscribed inner diameter is smaller than the given diameter of the seat face of the outer joint part.
    Type: Application
    Filed: May 15, 2003
    Publication date: December 11, 2003
    Inventors: Joachim Schneider, Bernd Sauerwein
  • Publication number: 20030184020
    Abstract: A mechanical end face seal comprising two relatively rotatable seal rings, a resilient bellows for providing a secondary seal between one seal ring and either a housing or a rotating shaft and a finger spring element nested in the bellows. The resilient bellows comprises an elastomeric material, such as molded rubber, and has a single convolution having a general cross-sectional shape of an inverted “Omega.” The finger spring member comprises a plurality of generally “U” shaped spring fingers which provide the axial biasing force to urge the ring faces in sealing relation. In a preferred embodiment, the spring includes ferrules for providing radially inward force on a flange portion of each end of the bellows to maintain the secondary seal.
    Type: Application
    Filed: March 25, 2003
    Publication date: October 2, 2003
    Inventor: Jon J. Radosav
  • Patent number: 6592365
    Abstract: A multiple-piece seal is used for a cure oven circulating fan. The seal may be readily positioned along the length of the shaft to control the small clearance between the rotating seal and the oven such that there is no contact between the seal and the oven, but the flow of heated air from the oven is substantially reduced and redirected away from the bearings of the circulating fan. The multiple-piece design permits seal replacement without having to disassemble the shaft, so that the seal may be replaced entirely from the outside of the oven, saving substantial down-time.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: July 15, 2003
    Inventor: Clifford L. Johns
  • Patent number: 6589049
    Abstract: A rotary seal assembly for a rotary kiln having a hood and a rotary drum with an opening formed between the drum and the hood, and an end. The rotary seal assembly includes a flexible framework arrangement that attaches to the end. The rotary seal assembly includes a riding surface that engages the drum as the drum rotates and connects with the framework arrangement in response to the movement of the drum as the drum rotates end. The rotary seal assembly includes a seal that is supported by the riding surface and is in essentially 360 degree contact with the drum when it is rotating and seals the opening between the drum when it is rotating in the hood to prevent fluid flow into and out of the end. A method for sealing an opening formed between a drum and a hood. The method includes the steps of attaching a flexible framework arrangement to the hood.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: July 8, 2003
    Assignee: IGS, Inc.
    Inventors: Shawn Robert Sutton, Kinsley Madison Desch