Intermediate Flexible Bending Portion Patents (Class 277/561)
  • Patent number: 9845880
    Abstract: A sealing ring with a dynamically loaded sealing lip having a sealing edge and a tension element for stabilizing the sealing lip in the radial direction, wherein: the tension element is arranged in a mounting groove; the mounting groove is arranged in the sealing lip on the side facing radially away from the sealing edge and has a mounting opening on the side facing radially away from the sealing edge, which opening is delimited by two guide webs arranged so as to be adjacent to each other at a spacing in the axial direction; the sealing lip is articulated, on its side facing axially away from the sealing edge, to a support member with a joint; and the sealing lip and the support member delimit, with their sides which radially face each other, a substantially C-shaped joint space which is open on one side in the axial direction.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: December 19, 2017
    Assignee: CARL FREUDENBERG KG
    Inventors: Kristian Mueller-Niehuus, Hans-Werner Guenther
  • Patent number: 9757804
    Abstract: A high pressure coolant tube for receipt by a tool body that includes a coolant tube body with an annular flange adjacent to the exit body end. There is a threaded collar that has an exterior threaded surface. The threaded collar contains an interior collar bore comprising an enlarged diameter interior collar bore surface portion and a reduced diameter interior collar bore surface portion. There is an exit seal pocket defined by an exit-facing flange surface of the annular flange and a reduced diameter body section and the enlarged diameter interior collar bore surface portion. There is an entrance seal assembly pocket defined by an entrance-facing flange surface of the annular flange and a reduced diameter body section and the enlarged diameter interior collar bore surface portion. An exit seal is in the exit seal pocket.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: September 12, 2017
    Assignee: KENNAMETAL INC
    Inventors: Carol Ann Bridge, Jeanne Marie McCullough
  • Patent number: 9689496
    Abstract: An axle seal used to prevent lubricant from leaking between a rotating shaft and a shaft bore. The seal includes: a peripheral connection section reliably connected to an inner edge of the shaft bore; an extensible and retractable adjustment section connected to the peripheral connection section, allowing the seal to make extension and retraction adjustment in a radial direction; and a sealed contact section connected to the inner edge of the extensible and retractable adjustment section and potentially in sealed contact with the surface of the rotating shaft. The seal contains an alignment follower that can synchronously transfer a radial movement of the rotating shaft to the inner edge of the extensible and retractable adjustment section. One application would be an oil seal between a front cover and crankshaft.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: June 27, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventors: John Arthur Wilkins, Austin Yu
  • Patent number: 9651154
    Abstract: A radial shaft seal, method of installation thereof, and seal assembly are provided. The seal includes a mounting portion and a seal lip having a sealing surface extending between an oil side end and a free air side end. An annular bridge extends from the oil side end to the mounting portion in radially overlying relation with the seal lip. An annular installation lip extends from the free air side end toward an air side of the seal. The installation lip has an inner surface spaced radially outwardly from the sealing surface and has an end portion that diverges radially outwardly toward the air side of the seal. The installation lip engages the shaft to promote the seal lip to slide over the shaft without unfolding the seal lip, and then springs radially outwardly from the shaft to remain out of contact with the shaft during use.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: May 16, 2017
    Assignee: Federal-Mogul LLC
    Inventor: Brent Sedlar
  • Patent number: 9581246
    Abstract: A seal member includes an annular fitting part and an annular dust lip. The fitting part fits on an inner circumference of a tubular member. The dust lip extends from the fitting part toward a side opposite from the tubular member such that a diameter of an inner circumference of the dust lip gradually decreases, and a distal end portion of the dust lip slides on an outer circumferential surface of a shaft member. A metal insert includes a reinforcing ring and a reinforcing extension piece. The reinforcing ring stands along the inner circumference of the tubular member. The reinforcing extension piece extends from the reinforcing ring toward a side opposite from the tubular member, and inclines such that a distal end of the reinforcing extension piece approaches the shaft member. The reinforcing ring is arranged in the fitting part, whereas the reinforcing extension piece is arranged in the dust lip.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: February 28, 2017
    Assignee: KYB Corporation
    Inventors: Naoki Kubota, Kiyoshi Kani, Chikashi Imoto
  • Patent number: 9447883
    Abstract: A seal for sealing around a shaft includes a radially outer clamp-in element to be clamped into a housing, an intermediate membrane part extending radially inwardly (toward the shaft) at an angle from the clamp-in element, and an angled base part at a radially inner end of the intermediate membrane part. A spring is received in a receiving groove that forms a spring pocket in the base part, and the spring exerts a contact pressure of a seal lip of the base part against the shaft. In a pressureless state without a pressure differential across the seal, the spring pocket has a width larger than the sectional diameter of the spring and thus forms a free play space for the spring in the pocket.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: September 20, 2016
    Assignee: Blohm + Voss Industries GmbH
    Inventors: Ernst Peter Von Bergen, Lars Ziemen, Carlos Fangauf, Dieter Von Borstel, Guido Wuestenhagen, Ivan Ristic
  • Patent number: 9222524
    Abstract: A drive force transmission device includes a clutch operatively interposed between a hub member and a drum member to selectively transmit drive power therebetween. A first rotating shaft member is coupled to the hub member to rotate with the hub member. A second rotating shaft member is coupled to a separating wall part of the drum member to rotate with the drum member. A support member rotatably supports the second rotating shaft member via a bearing. The support member includes a restriction part that restricts axial movement of an outer race of the bearing. A bottom portion of the separating wall part is a radially offset towards the bearing space with respect to a top portion of the separating wall so that the bottom portion radial overlaps with the restriction part as viewed perpendicular to a rotational axis of the drum member.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: December 29, 2015
    Assignees: Nissan Motor Co., Ltd., JATCO Ltd
    Inventors: Katsuyuki Saito, Kazuhiro Miyachi, Kazutoshi Shimozono, Kiyoto Tamura, Yutaka Yoshikawa, Akihisa Kawai
  • Patent number: 9206812
    Abstract: A thermal actuator for a rotating shaft shutdown seal that has a piston with a portion of its axial length enclosed within a chamber shell with a material that expands upon a rise in temperature. The portion of the actual length of the piston within the chamber has at least two different diameters with the larger diameter leading in the direction of travel of the piston. Upon a rise in temperature, expansion of the material surrounding the piston within the chamber creates a force on the piston in the desired direction of travel. Below a preselected temperature the piston is positively locked with a passive release when the preselected temperature is reached.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: December 8, 2015
    Assignee: Westinghouse Electric Company LLC
    Inventors: Phillip J. Hawkins, Judith E. Hodgson
  • Patent number: 9206791
    Abstract: A thermal actuator for a rotating shaft shutdown seal that has a piston with a portion of its axial length enclosed within a chamber shell with a material that expands upon a rise in temperature. The portion of the actual length of the piston within the chamber has at least two different diameters with the larger diameter leading in the direction of travel of the piston. Upon a rise in temperature, expansion of the material surrounding the piston within the chamber creates a force on the piston in the desired direction of travel.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: December 8, 2015
    Assignee: Westinghouse Electric Company LLC
    Inventors: Phillip J. Hawkins, Judith E. Hodgson
  • Patent number: 8955849
    Abstract: A radial shaft seal and assembly are provided. The seal has an annular mounting portion and a seal body bonded thereto. The seal body extends to a seal lip extending between an oil-side end and a free air-side end. An annular bridge extends between the seal lip and a central portion of the seal body in radially overlying relation to the seal lip. A primary dust lip extends from the air-side end and has an annular rib configured for sealed abutment with a running surface of a shaft. The annular rib has at least one vent. An auxiliary dust lip extends from the central portion of the seal body to a free end configured for sealed abutment with the shaft. The free end of the auxiliary dust lip has at least one vent spaced circumferentially from the at least one vent in the annular rib.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: February 17, 2015
    Assignee: Federal-Mogul Corporation
    Inventor: Brent R. Sedlar
  • Patent number: 8950753
    Abstract: A radial shaft seal to isolate an air side of the seal from an oil side of the seal is provided. The seal includes a mounting portion and a seal lip having a sealing surface extending between an oil side end and an air side end. An annular bridge is connected to the oil side end by a first hinge and to the mounting portion by a second hinge. The bridge extends in overlying relation to the seal lip. A projection extends from the first hinge away from the bridge. A plurality of ribs extend radially inwardly from the projection. A plurality of nubs extend axially from the oil side end of the seal lip toward the oil side of the shaft seal. The ribs and nubs minimize friction between the seal and a shaft during installation and prevent the seal lip from inverting during an oil-side installation assembly.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: February 10, 2015
    Assignee: Federal-Mogul Corporation
    Inventors: Brent R. Sedlar, David M. Toth
  • Publication number: 20130341873
    Abstract: A radial shaft seal ring includes a reinforcement ring and an elastomeric part connected to the reinforcement ring. The elastomeric part carries a sealing lip, which is formed by an annular component connected to the elastomeric part. The annular component has a sealing edge made from PTFE which is formed to sealingly abut on a shaft to be sealed by the radial shaft seal ring. The sealing edge can be formed as a sharp-edged sealing edge that abuts, in linear contact, on the to-be-sealed shaft.
    Type: Application
    Filed: December 12, 2011
    Publication date: December 26, 2013
    Inventors: Helmut Benedix, Juergen Netzer, Christoph Passow
  • Publication number: 20130341872
    Abstract: A sealed joint may include a first plate with a seal land, a second plate that moves relative to the seal land, and a seal connected to the second plate. The seal may extend laterally between a first seal end and a second seal end. The seal may include a plurality of seal elements that extend longitudinally between a first seal side and a second seal side. A first of the seal elements may extend laterally from the first seal end towards a first seal segment, which is separated from the second plate by an airflow channel. The second of the seal elements may extend laterally from the second seal end towards a second seal segment, which is located between and engaged with the first seal segment and the seal land.
    Type: Application
    Filed: February 10, 2012
    Publication date: December 26, 2013
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Thomas M. Barry, JR., Corina Scanio
  • Patent number: 8529216
    Abstract: A fuel supply unit includes a fuel reservoir (22) for holding fuel. A fuel pump (18) is in the reservoir for pumping fuel from the reservoir. A jet pump assembly (16) is within the reservoir for drawing fuel from a fuel tank into the reservoir. A seal structure (24) has a flange (28) with a living hinge (31). The seal structure is operatively coupled with a housing of the jet pump assembly and disposed between the housing and a portion of the reservoir, with a portion of the flange being pivoted about the living hinge such that the portion of the flange engages an interior surface of the reservoir, providing a seal between the housing of the jet pump assembly and the interior surface of the reservoir.
    Type: Grant
    Filed: July 30, 2007
    Date of Patent: September 10, 2013
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Paul F. Briggs, Jeffery John Milton, Matthias Nederegger, John P. Wattai
  • Patent number: 8500130
    Abstract: A radial shaft seal configured for receipt in a housing and about a shaft to sealingly isolate an air side of the seal from an oil side of the shaft seal is provided. The seal includes a mounting portion and a seal lip having an annular sealing surface extending between an oil side end and a free air side end. An annular bridge is connected to the oil side end of the seal lip by a first hinge and to the mounting portion by a second hinge. The bridge extends from the first hinge to the second hinge in radially overlying relation to the seal lip. A projection extends from the first hinge away from the bridge toward the oil side of the seal to prevent the seal lip from inverting during the oil-side installation assembly.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: August 6, 2013
    Assignee: Federal-Mogul Corporation
    Inventors: Brent R. Sedlar, David M. Toth, Ronald M. Noteboom, II
  • Publication number: 20130111729
    Abstract: A radial shaft seal, method of installation thereof, and seal assembly are provided. The seal includes a mounting portion and a seal lip having a sealing surface extending between an oil side end and a free air side end. An annular bridge extends from the oil side end to the mounting portion in radially overlying relation with the seal lip. An annular installation lip extends from the free air side end toward an air side of the seal. The installation lip has an inner surface spaced radially outwardly from the sealing surface and has an end portion that diverges radially outwardly toward the air side of the seal. The installation lip engages the shaft to promote the seal lip to slide over the shaft without unfolding the seal lip, and then springs radially outwardly from the shaft to remain out of contact with the shaft during use.
    Type: Application
    Filed: October 25, 2012
    Publication date: May 9, 2013
    Applicant: FEDERAL-MOGUL CORPORATION
    Inventor: Federal-Mogul Corporation
  • Patent number: 8398089
    Abstract: A radial shaft seal configured for receipt in a housing and about a shaft to sealingly isolate an air side of the seal from an oil side of the shaft seal is provided. The seal includes a mounting portion and a seal lip having an annular sealing surface extending between an oil side end and a free air side end. An annular bridge is connected to the oil side end of the seal lip by a first hinge and to the mounting portion by a second hinge. The bridge extends from the first hinge to the second hinge in radially overlying relation to the seal lip. An annular projection extends from the mounting portion axially away from the bridge. The projection has an oil side facing the seal lip and confronts the air side end of the seal lip upon the seal lip pivoting about the first hinge.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: March 19, 2013
    Assignee: Federal-Mogul Corporation
    Inventors: Brent R. Sedlar, David M. Toth
  • Publication number: 20130001889
    Abstract: A sealing assembly for insertion between first and second mechanical elements subjected to offset positioning, including a reinforcement ring and at least one elastomeric sealing element in which the reinforcement ring is at least partially embedded, the sealing element including an annular membrane shaped as a truncated-cone sleeve and free from the reinforcement ring, which membrane obliquely extends to protrude from the reinforcement ring, towards a symmetry axis of the sealing assembly and ends with at least one annular sealing lip intended to slidingly cooperate with the first mechanical element; the membrane has, in radial direction, a relatively thin thickness, thinner than that of the at least one sealing lip, so as to be highly flexible, and a plurality of stiffening ribs formed with the membrane, which extend in the axial direction, parallel to one another, spaced apart from one another to form longitudinally extending radial projections on the membrane.
    Type: Application
    Filed: June 19, 2012
    Publication date: January 3, 2013
    Applicant: AKTIEBOLAGET SKF
    Inventors: Francesco SCARAMOZZINO, Roberto PASINO
  • Patent number: 8176939
    Abstract: A packing attached to a spool of a spool valve has a ring-shaped inner-peripheral seal portion provided with an inner-peripheral seal face, a ring-shaped outer-peripheral seal portion provided with an outer-peripheral seal face, and an intermediate flexible portion interposed between the both portions and curved by an action of a fluid pressure, the intermediate flexible portion has both right and left flat side faces parallel with each other, a thickness of the intermediate flexible portion is formed smaller than the inner-peripheral seal portion and the outer-peripheral seal portion, and a ring width of the intermediate flexible portion in a packing radial direction is formed equal to or larger than the thickness.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: May 15, 2012
    Assignee: SMC Corporation
    Inventor: Shinichi Yoshimura
  • Patent number: 8052152
    Abstract: A shaft seal for forming a dynamic seal along an axially extending annular running surface and method of installation thereof is provided. The shaft seal has a mounting portion configured to be connected to a stationary housing and a seal lip having an annular sealing surface extending between an oil side end and an air side end of the seal lip. The sealing surface is configured to extend axially along a shaft running surface. An annular bridge portion connects the seal lip to the mounting portion. A plurality of webs extend generally radially between the bridge portion and the mounting portion to prevent the seal lip from being inadvertently unfolded during installation or while in use. An annulus can be used to install the shaft seal into a housing and about a shaft without the need for secondary operations.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: November 8, 2011
    Assignee: Federal-Mogul Corporation
    Inventors: Brent Ryan Sedlar, David Michael Toth, Ronald Maurice Noteboom, II
  • Patent number: 8011673
    Abstract: A dynamic shaft seal assembly is provided including a dynamic seal for engaging a rotary shaft. The dynamic seal includes a base portion that is mounted within a casing and has an axially extending barrel portion extending from a radially inner end of the base portion. The axially extending barrel portion terminates in a radially extending leg portion which extends inwardly from an end of the axially extending portion. A generally conically shaped seal portion extends from an end of the radially extending portion and the seal portion includes a radially inner face engaging the shaft and a radially outer face having a stiffening bead integrally formed thereon. The stiffening bead reduces the seal's propensity for “bell mouthing” while the axially extending barrel portion provides improved shaft followability for the dynamic seal.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: September 6, 2011
    Assignee: Freudenberg-NOK General Partnership
    Inventor: Alexander Berdichevsky
  • Patent number: 7963526
    Abstract: A radial shaft seal is provided for accommodating large radial offset of the shaft relative to a housing. The seal includes an annular retainer insert provided for engaging the seal to a fixed housing. An annular elastomeric seal body is molded to the retainer insert and includes a flexible axially extending portion extending from an inner surface of the retainer insert. A seal portion extends from a radially inward end of the flexible portion and includes first and second seal lips and an elastomeric bearing surface disposed between the first and second sealing lips. The bearing surface includes a plurality of raised pads adapted to engage the shaft. The pads each include a rounded edge on lateral sides thereof for encouraging the creation of a lubricating film between the pads and shaft. The pads are lubricated by a lubricant disposed in a lubricant chamber disposed between the first and second seal lips.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: June 21, 2011
    Assignee: Freudenberg-NOK General Partnership
    Inventor: John C. Dahlheimer
  • Patent number: 7959157
    Abstract: An oil seal having the usual lips for retaining oil and a guide member made of a variety of relatively stiff or rigid materials. The guide member is made slightly larger than the smallest diameter of the seal member when the seal rests on the shaft. The seal member can have the guide member on either the air side or the oil side of the seal. The disclosure also relates to a shipping plug, which is inserted into the seal and retains the oil in place during shipping when the seal is installed but a shaft is not installed.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: June 14, 2011
    Assignee: SKF USA Inc.
    Inventors: David Dobbs, Mark F. Spreitzer, Dennis Nelson Denton, Kacy D. Denton, Kevin R. Suva
  • Patent number: 7854432
    Abstract: A dynamic shaft seal assembly is provided including a dynamic seal for engaging a rotary shaft. The dynamic seal includes a base portion that is mounted within a casing and has an axially extending barrel portion extending from a radially inner end of the base portion. The axially extending barrel portion terminates in a radially extending leg portion which extends inwardly from an end of the axially extending portion. A generally conically shaped seal portion extends from an end of the radially extending portion and the seal portion includes a radially inner face engaging the shaft and a radially outer face having a stiffening bead integrally formed thereon. The stiffening bead reduces the seal's propensity for “bell mouthing” while the axially extending barrel portion provides improved shaft followability for the dynamic seal.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: December 21, 2010
    Assignee: Freudenberg-NOK General Partnership
    Inventor: Alexander Berdichevsky
  • Patent number: 7854433
    Abstract: A dynamic shaft seal assembly is provided including a dynamic seal for engaging a rotary shaft. The dynamic seal includes a base portion that is mounted within a casing and has an axially extending barrel portion extending from a radially inner end of the base portion. The axially extending barrel portion terminates in a radially extending leg portion which extends inwardly from an end of the axially extending portion. A generally conically shaped seal portion extends from an end of the radially extending portion and the seal portion includes a radially inner face engaging the shaft and a radially outer face having a stiffening bead integrally formed thereon. The stiffening bead reduces the seal's propensity for “bell mouthing” while the axially extending barrel portion provides improved shaft followability for the dynamic seal.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: December 21, 2010
    Assignee: Freudenberg-NOK General Partnership
    Inventor: Alexander Berdichevsky
  • Publication number: 20100187769
    Abstract: A radial shaft seal configured for receipt in a housing and about a shaft to sealingly isolate an air side of the seal from an oil side of the shaft seal is provided. The seal includes a mounting portion and a seal lip having an annular sealing surface extending between an oil side end and a free air side end. An annular bridge is connected to the oil side end of the seal lip by a first hinge and to the mounting portion by a second hinge. The bridge extends from the first hinge to the second hinge in radially overlying relation to the seal lip. An annular projection extends from the mounting portion axially away from the bridge. The projection has an oil side facing the seal lip and confronts the air side end of the seal lip upon the seal lip pivoting about the first hinge.
    Type: Application
    Filed: January 28, 2010
    Publication date: July 29, 2010
    Inventors: Brent R. Sedlar, David M. Toth
  • Publication number: 20100187768
    Abstract: A radial shaft seal configured for receipt in a housing and about a shaft to sealingly isolate an air side of the seal from an oil side of the shaft seal is provided. The seal includes a mounting portion and a seal lip having an annular sealing surface extending between an oil side end and a free air side end. An annular bridge is connected to the oil side end of the seal lip by a first hinge and to the mounting portion by a second hinge. The bridge extends from the first hinge to the second hinge in radially overlying relation to the seal lip. A projection extends from the first hinge away from the bridge toward the oil side of the seal to prevent the seal lip from inverting during the oil-side installation assembly.
    Type: Application
    Filed: January 28, 2010
    Publication date: July 29, 2010
    Inventors: Brent R. Sedlar, David M. Toth, Ronald M. Noteboom, II
  • Publication number: 20100133758
    Abstract: To effectively and easily suppress squealing noise occurring when a steering shaft is in strong contact with a bumper portion, a sealing device (1) between a housing and a shaft has a first molding (11) including a bellows-like flexible portion (15) the bumper portion (16), and a seal lip portion (17) integrally on the inner peripheral side of an outer peripheral fixing portion (12) secured to the housing, and a second molding (21) including a second flexible portion (25) and a second bumper portion (26) integrally on the inner peripheral side of a second fixing portion (22) secured to the outer peripheral fixing portion (12), fall out prevention portions (19, 29) are respectively provided on the inner peripheral surfaces of the bumper portion (16) and second bumper portion (26), and resin slide members (20, 30) are fitted without bonding to the fall out prevention portions (19, 29), respectively.
    Type: Application
    Filed: July 24, 2007
    Publication date: June 3, 2010
    Inventors: Go Kanzaki, Shinobu Munekata, Naoto Kobayashi, Yuichi Tarukawa
  • Patent number: 7017913
    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: Grant
    Filed: June 25, 2003
    Date of Patent: March 28, 2006
    Assignee: Carl Freudenberg KG
    Inventors: Thomas Klenk, Eberhard Bock, Thomas Kramer, Werner Hufnagel, Martin Heldmann, Markus Clemens, Gilbert Pataille
  • Patent number: 6945537
    Abstract: A sealing ring comprising a bearing ring with a radial flange and a sealing sleeve, which at its free end is connected to a thickened, surrounding bulge.
    Type: Grant
    Filed: March 10, 2004
    Date of Patent: September 20, 2005
    Assignee: Carl Freudenberg KG
    Inventors: Celine Guillerme, Eric Kammerer
  • 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: 6676130
    Abstract: Provision is made in a shaft sealing ring, comprising a rotary support body, at least one sealing lip mounted on the support body and extending at least partly in radial direction, and a sealing surface offered by the sealing lip and contacting a stationary countersurface, for the sealing lip to consist of a material which is permeable to the medium to be sealed off and permits penetration of the medium to be sealed off from a surface of the sealing lip facing the sealed space to the sealing surface.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: January 13, 2004
    Assignee: Dichtungstechnik G. Bruss GmbH & Co.
    Inventor: Wolfgang Schmitt
  • Patent number: 6659468
    Abstract: A seal includes an annular seal body and an annular lip attached to the seal body and extending radially outwards from the seal body. The annular lip has a stem and a tip and is attached to the seal body in a manner allowing deflection of the lip relative to the seal body.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: December 9, 2003
    Inventor: Rodric J. Phillips
  • Patent number: 6601855
    Abstract: A universal joint seal for retaining lubricant therein. The seal cooperates to form a static seal with the trunnion and a static seal with the bearing cup and permits relative angular movement between the trunnion and bearing cup through a flexible web portion. The seal optionally permits venting of pressure within the grease cavity formed between the trunnion and bearing cup. The seal also has a passage communicating with the grease cavity. The seal has an outward facing lip seal that provides a fluid barrier to the migration of lubricant out of the passage. In response to a moderate pressure level within the grease cavity, the lip moves away from the contacting surface so as to vent the moderate pressure within the grease cavity out of the sealed region and to prevent an excessive pressure differential from developing across the lip. Several alternate embodiments permitting venting of pressure from the grease cavity are disclosed.
    Type: Grant
    Filed: June 23, 1999
    Date of Patent: August 5, 2003
    Inventor: Keith A. Clark
  • Patent number: 6520507
    Abstract: A sealing sleeve made of a polymer material especially for small-dimension installation spaces, the sealing sleeve having a retaining segment and a sealing segment, the retaining segment being connected to a supporting body and the sealing segment on the peripheral side encircling a shaft to be sealed or a barrel ring in a sealing manner under radial biasing and having on the side facing the shaft a surface profiling for recirculating the lubricant, wherein the connecting diameter (interior diameter (D) of the enclosing part (31)) is 1.0 to 1.05 times the shaft diameter (W) plus four times the sleeve thickness (d).
    Type: Grant
    Filed: May 15, 2001
    Date of Patent: February 18, 2003
    Assignee: Firma Carl Freudenberg
    Inventors: Gilbert Pataille, Boris Tchilingurian
  • Patent number: 6513812
    Abstract: A novel sealing device is disclosed that provides an enhanced seal at the interface between a rotary shaft and a stationary housing for automotive applications such as transmissions and axle assemblies. The sealing device preferably includes a first seal that has a plurality of turbine blade portions. As the first seal rotates with the shaft, the turbine blade portions create a hydrodynamic flow or fluid disturbance in the vicinity of the interface that effectively blows away contaminants as they approach the interface between the rotary shaft and the housing. A second seal takes one of two forms. One is a radial lip seal that includes a pocket portion between two contact surfaces. A plurality of openings allow lubricant from the system to enter into the pocket portion, which provides lubricant along the contact surfaces of the lip seal. The presence of the lubricant enhances the seal life.
    Type: Grant
    Filed: May 5, 1997
    Date of Patent: February 4, 2003
    Assignee: ArvinMeritor Technology, LLC
    Inventors: Jibin Yang, Siavash Eshghy
  • Patent number: 6513810
    Abstract: A sealing ring, including a support ring made of an impact-resistant material, and a lip ring made of PTFE, where the lip ring has a holding segment and a sealing segment, and where the holding segment is connected with the support ring by an intermediate layer made of a polymer material. The holding segment and the sealing segment are made of two different PTFE compounds, each adapted to their purpose of use.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: February 4, 2003
    Assignee: Firma Carl Freudenberg
    Inventor: Gilbert Pataille
  • Patent number: 6406034
    Abstract: A joint for a shaft assembly includes a housing fitted with a boot seal that encircles and seals about a stub end of a shaft extending into the housing. The boot seal has a collar-like neck portion whose inner surface is formed with an annular wiper rib. Prior to assembly with the shaft, a shipping plus is disposed in the neck of the seal to guard against the escape of grease and the ingress of contaminants. The wiper rib of the seal is operative to engage and wipe grease from the inserted shank of the shipping plug upon its removal to prevent the grease from accumulating in the neck region and impairing the performance of the seal.
    Type: Grant
    Filed: October 27, 1999
    Date of Patent: June 18, 2002
    Assignee: Delphi Technologies, Inc.
    Inventors: Avissai Alcantara, Keith Allen Kozlowski
  • Patent number: 6302403
    Abstract: A sealing assembly for two mechanical members connected for relative rotation; a first mechanical member is fitted integrally with a substantially rigid shield, from which projects radially an annular sealing member having, on a respective first annular face, a first and a second axial sealing lip, both cooperating in sliding manner with a sealing surface of a second mechanical member; when the first annular face of the annular sealing member is subjected to a pressure substantially equal to the pressure on a second annular face, opposite the first, of the annular sealing member, only the first lip cooperates in sliding manner with the sealing surface, and the second lip mates, with no interference, with the sealing surface to permit fluid passage; conversely, when the first annular face is subjected to a pressure significantly lower than the pressure on the opposite second annular face, the annular sealing member is deformed elastically so that the second lip also cooperates in sliding manner with the sealin
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: October 16, 2001
    Assignee: SKF Industrie S.p.A.
    Inventors: Gianfranco Pairone, Fabrizio Avaro, Mario Micca
  • Patent number: 6298955
    Abstract: An improved seal for use between an eccentric shaft and a brake caliper in an air disc brake system incorporates a flexible portion between the fixed portion which is fixed to the caliper and the floating portion which is received on the shaft. The flexible portion is preferably formed of a thinner rubber area, and also extends axially outward of both the fixed and floating areas. The flexible portion facilitates skewing and axial movement of the eccentric shaft within the caliper.
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: October 9, 2001
    Assignee: Meritor Heavy Vehicle Systems, LLC
    Inventor: Mark L. Frost
  • Patent number: 5988591
    Abstract: A packing mounting groove formed in a spool has a wider portion of a large groove width and a narrower portion of a small groove width, and a packing that is mounted in the packing mounting groove has a first portion that fits in the wider portion and a second portion that fits in the narrower portion. A plurality of fixing protrusions formed concentrically on both sides of the second portion are pressure-contacted with a groove wall of the narrower portion to fixedly mount the packing in the mounting groove.
    Type: Grant
    Filed: October 20, 1998
    Date of Patent: November 23, 1999
    Assignee: SMC Corporation
    Inventors: Takashi Akimoto, Masamichi Tajima, Makoto Ishikawa
  • Patent number: 5967527
    Abstract: A sealing assembly (1) for a rotary shaft (2), having a metal structure (4) defined by a sleeve portion (6) and by a radially inner flange (7), and a sealing ring (5) cooperating in sliding manner with the shaft (2); the sealing ring (5) in turn has a connecting portion (15) for connection to the flange (7), and a portion (18) projecting from the flange; two sealing lips (19, 20) extend axially from opposite sides of the projecting portion (18); the two sealing lips (19, 20) and the projecting portion (18) are connected in one piece to one another at respective narrow sections (21, 22, 23), each defining a respective virtual hinge permitting rotation of each element with respect to the others; and the respective centers of rotation (A, B, C) of the virtual hinges are defined, at each axial section of the sealing assembly, by three points arranged substantially in the form of a triangle.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: October 19, 1999
    Assignee: Forsheda AB
    Inventors: Roberto Fabro, Mikael Josefsson, Peter Koski
  • Patent number: 5909880
    Abstract: A polymer ring has a circumferential mounting flange and an annular end wall extending radially inwardly and axially inwardly therefrom, providing a conically convex side and a conically concave side. An annular seal lip projects from a radially inner portion of the end wall to engage an annular radially outwardly curved surface of the bearing inner ring after insertion of the seal into the bearing. An annular rib located on the convex side between the end wall and the mounting flange, and an annular rib groove on the concave side opposite the annular rib, allow the polymer ring to collapse radially as the end wall is deflected axially outwardly to a more radial orientation during insertion.
    Type: Grant
    Filed: February 21, 1997
    Date of Patent: June 8, 1999
    Assignee: The Torrington Company
    Inventor: Walter P. Waskiewicz