Rib Or Groove On Radial Extending Surface Patents (Class 277/424)
  • Patent number: 10520092
    Abstract: Seal assembly designs for extreme temperatures that include material and structural designs to counteract sealing component shrinkage or expansion caused by thermal expansion or contraction. Provisions can be included to increase sealing stress along the outer seal lip of the seal assembly for low temperature applications where shrinkage can be an issue and to increase sealing stress along the inner seal lip of the seal assembly for high temperature applications where expansion can be an issue.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: December 31, 2019
    Assignee: Bal Seal Engineering, Inc.
    Inventors: Farshid Dilmaghanian, Marc Soriano, Peter J. Balsells, Shirley Zhou, Majid Ghasiri, Derek Changsrivong, Raul Magana
  • Patent number: 10508740
    Abstract: A rotary seal arrangement has a rotatably mounted machine part and a machine part that forms a bearing for the rotatably mounted machine part. One of the machine parts forms a seal accommodating structure and the other one of the machine parts has a surface forming a sealing surface. At least one rotary seal is arranged in the seal accommodating structure. The rotary seal seals off a high-pressure area from a low-pressure area between the machine parts.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: December 17, 2019
    Assignee: Trelleborg Sealing Solutions Germany GmbH
    Inventor: Holger Jordan
  • Patent number: 10274007
    Abstract: A hybrid dynamic pressure gas thrust bearing, comprises two outer discs, an inner disc clamped between the two outer discs, and foil type elastic parts arranged between each outer disc and the inner disc; and the two end faces of the inner disc are respectively provided with regular groove-type patterns, and the groove-type pattern in one end face is in mirror symmetry with the groove-type pattern in the other end face. The hybrid dynamic pressure gas thrust provided by the invention has the rigidity characteristic of the high-limit rotating speed of the groove-type dynamic pressure gas thrust bearing, and has the flexible characteristic of the high impact resistance and the load capacity of the foil type dynamic pressure gas thrust bearing, it can meet the application of dynamic pressure gas thrust bearings in ultra high-speed areas under larger loads.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: April 30, 2019
    Inventor: Lifeng Luo
  • Patent number: 9896969
    Abstract: A transfer bearing assembly is configured to allow a flow of a fluid from an inlet tube to a channel defined by a rotating shaft. The transfer bearing assembly includes a body having an axially forward side and an axially aft side and a first wing having an axially aft end coupled to the axially forward side and an axially forward end. The transfer bearing assembly also includes a first side plate having a radially outward end coupled to the axially forward end of the first wing and a radially inward end.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: February 20, 2018
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: William G. Sheridan, Marc J. Muldoon, Michael E. McCune
  • Patent number: 9650997
    Abstract: A turbojet is combined with a co-axially integrated rotary rocket to form a propulsion system called a Rotary Turbo Rocket that can function as a turbojet, as an afterburning turbojet, as an Air Turbo Rocket, or as a rotary rocket. The Rotary Turbo Rocket can operate in any of these propulsion modes singularly, or in any combination of these propulsion modes, and can transition continuously or abruptly between operating modes. The Rotary Turbo Rocket can span the zero to orbital flight velocity speed range and/or operate continuously as it transitions from atmospheric to space flight by transitioning between operating modes.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: May 16, 2017
    Inventor: John Bossard
  • Patent number: 9587678
    Abstract: A rolling bearing assembly including an elastomeric seal arranged at least partially within a circumferentially extending groove of a bearing ring is provided. The elastomeric seal is arranged between the radially inner ring and the radially outer ring. The elastomeric seal includes a radially outer end engaged within a first circumferentially extending groove of the radially outer ring, and a radially inner end extending radially inwardly towards the radially inner ring and arranged at least partially within the second circumferentially extending groove of the radially inner ring. Clearance is provided between the radially inner end of the elastomeric seal and the second circumferentially extending groove of the radially inner ring.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: March 7, 2017
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: William Moratz
  • Patent number: 9404584
    Abstract: This certificate of addition pertains to alternative constructive methods submitted for the components of the seal, resulting in increased efficiency and durability of the device, as well as the ease of assembly thereof. Compact restrictive seal (1) derived from these constructive alternatives can be applied indiscriminately to equipment lubricated by grease, fluid oil or oil mist.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: August 2, 2016
    Assignee: PETROLEO BRASILEIRO S.A.—PETROBRAS
    Inventor: Paulo Roberto Leite Nobrega
  • Patent number: 9383017
    Abstract: A mechanical face seal includes a pair of relatively rotatable seal rings having opposing seal faces which define a sealing region therebetween. The sealing region extends radially between the inside and outside diameters of the seal rings to seal a fluid in a sealing chamber near one diameter thereof. The seal faces are provided with tapered channel macro/micro features which generate hydrodynamic lift during relative rotation of the seal rings. The tapered channel macro/micro feature shows significant improvement in seal performance when compared to an untextured face. Low contact and hence low wear are attributed to a more distributed hydrodynamic load support function. Likewise, low leakage is believed to be the result of optimized cavitation function, and no debris was discovered in the micro-features at the conclusion of any testing.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: July 5, 2016
    Assignee: Flowserve Management Company
    Inventors: Lionel A. Young, Joshua K. Benedict, John Davis
  • Patent number: 9309775
    Abstract: A debris discourager for a gas turbine engine is rotatable about an engine axis and extends between a fore end and an aft end. A portion of the debris discourager includes a non-uniform surface that generates a wind flow to prevent debris from entering a sealed interface.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: April 12, 2016
    Assignee: United Technologies Corporation
    Inventor: Jacob Peter Mastro
  • Patent number: 8286969
    Abstract: A seal ring for a rotatable shaft in a turbo machine includes a seal body configured for disposing around the shaft wherein a radial gap is defined between an inner surface of the seal body and the shaft. An upstream surface defined by the seal body extends from the inner surface, and an annular obstruction extends from the upstream surface of the seal body, wherein the obstruction is spaced away from the inner surface.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: October 16, 2012
    Assignee: Dresser-Rand Company
    Inventor: Gocha Chochua
  • Patent number: 8220803
    Abstract: To improve durability of a seal lip (4) of an oil seal (1) in slidably contact with the peripheral surface of a shaft (23), a lubricating oil supply section (11) for collecting adhered oil and dropping it on the shaft (23) is provided at a forward end portion of an installation section (2), the lubricating oil supply section (11) has projections (12) formed on the inner peripheral surface of the installation section (2) to collect oil on the surface thereof, the surface of each projection (12) has a recess (13) for temporarily accumulating oil, guidance projections, or a slope for collecting the oil, and dams are formed on a forward end face (2a) of the installation section (2) to block the oil flowing down along the circumferential direction on the forward end face (2a) and guides the oil toward each projection (12).
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: July 17, 2012
    Assignee: NOK Corporation
    Inventors: Satoshi Yamanaka, Takehiro Nakagawa, Masayuki Tanida, Hideharu Hyakutake, Hiroki Matsui, Hideyuki Furuyama, Go Kanzaki, Shinya Takeda, Kei Sasaki, Akira Yamaguchi
  • Patent number: 8136818
    Abstract: A seal lip of an oil seal is in slidable contact with a peripheral surface of a shaft. A lubricating oil supply section for collecting adhered oil and dropping it on the shaft is provided at a forward end portion of an installation section. The lubricating oil supply section has projections formed on the inner peripheral surface of the installation section to collect oil on the surface thereof. The surface of each projection has a recess for temporarily accumulating oil. Guidance projections, or a slope for collecting the oil, and dams are formed on a forward end face of the installation section to block the oil flowing down along the circumferential direction on the forward end face and guides the oil toward each projection.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: March 20, 2012
    Assignee: Nok Corporation
    Inventors: Satoshi Yamanaka, Takehiro Nakagawa, Masayuki Tanida, Hideharu Hyakutake, Hiroki Matsui, Hideyuki Furuyama, Go Kanzaki, Shinya Takeda, Kei Sasaki, Akira Yamaguchi
  • Patent number: 8075251
    Abstract: A hydraulic seal is defined between a rotating member such as a turbocharger shaft and a stationary member such as part of a bearing housing of a turbocharger. The members define a projecting annular disc that is received in an annular channel that is filled with hydraulic sealing fluid such as oil. Rotation of the rotary member applies a centrifugal force to the fluid thereby ensuring that it is retained in the channel between walls thereof and the disc. This annulus of fluid provides a hydraulic seal around the shaft between the bearing housing and the compressor or turbine housing. The oil is delivered into the channel from a supply in the rotary member. One of the walls of the channel serves as a weir whereby when the channel has an excess supply of oil is overflows the wall and passes the drain.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: December 13, 2011
    Assignee: Cummins Turbo Technologies Limited
    Inventor: Matthew J Purdey
  • Publication number: 20100276893
    Abstract: A dynamic sealing assembly for a rotating shaft to seal an forward portion of the shaft from an aft portion of the shaft, comprises: a stationary member that has an aperture with a spiral grooved aperture surface that passes through it to receive the shaft; and generally linear shaft surface undulations between the forward and aft portions of the shaft that are at least partially within the sealing member aperture; wherein rotation of the shaft causes the undulations to propagate fluid from between the rotating shaft and the aperture into the grooved aperture surface back toward the forward portion of the shaft.
    Type: Application
    Filed: April 30, 2009
    Publication date: November 4, 2010
    Inventors: Gordon F. Jewess, Eric A. Alexander, Stephen George Mican
  • Publication number: 20100052265
    Abstract: The invention relates to a seal with non-contact adjacent deflector rings, arranged concentrically to each other, about a common rotation axis, whereby, on a first deflector ring of the deflector rings, at least two axially-adjacent radial lips are embodied an said radial lips are embodied such as not to come into contact with a second deflector ring of the deflector rings and an annular hollow cavity is embodied between two axially-adjacent radial lips and the second deflector ring.
    Type: Application
    Filed: November 9, 2009
    Publication date: March 4, 2010
    Applicant: SCHAEFFLER KG
    Inventors: Erwin HARTMANN, Wilhelm WALTER
  • Patent number: 7547185
    Abstract: An output shaft air/oil separator system comprises an outer housing, an oil passage, a spline shaft having a cavity formed therein that communicates with the oil passage, an output shaft disposed at least partially within the spline shaft cavity that has a first section spaced apart from an inner surface of the spline shaft to form a gap therebetween in communication with the spline shaft cavity and a second section contacting at least a portion of the spline shaft inner surface, a housing cavity defined by at least a portion of an outer surface of the spline shaft and the outer housing, an annular groove formed in the spline shaft communicating with the spline shaft cavity, and at least one port extending between the spline shaft inner and outer surfaces in communication with the annular groove and the housing cavity.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: June 16, 2009
    Assignee: Honeywell International Inc.
    Inventors: William L. Giesler, Brent L. Bristol, Michael J. Burns, Tina Marie Hynes
  • Patent number: 7530870
    Abstract: A sealing member can include a radially-working lip which contacts a drive shaft in a radial direction to seal a gap between the drive shaft and the housing in the radial direction, an axially-working lip extending in an axial direction, and a contact member which contacts the axially-working lip to seal the gap between the drive shaft and the housing in the axial direction. The contact member can be fitted to the drive shaft to rotate with the drive shaft.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: May 12, 2009
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Hiroyuki Kishimoto, Tetsuya Mashiko, Hirohiko Kakuyama, Syuuji Fujita
  • Publication number: 20080310953
    Abstract: A force balanced seal for use with a rotor in the turbomachine has a member in opposed facing disposition to the rotor with a face dam portion of the member having a surface parallel with the sealing surface of the rotor, a groove in the member facing the rotor and bounding the face dam surface, an air bearing surface in the member facing the sealing surface of the rotor, a second passageway through the member from the air bearing surface to a radially outwardly facing surface of the member and a first passageway through the member from the groove to a member surface facing oppositely from the air bearing surface. An operating clearance between the seal and rotor is maintained by a closing force, exerted through a plurality of springs, and an opposing opening force created by pressurized air venting through the second passageway to the first passageway.
    Type: Application
    Filed: January 25, 2008
    Publication date: December 18, 2008
    Inventor: Glenn M. Garrison
  • Patent number: 7134667
    Abstract: A sealing arrangement for turbomachines with a shaft bearing, a throw-off ring and a shaft seal which is assigned to a sealing gap and has a seal housing wherein opposing faces of the throw-off ring and the seal housing form an annular gap for centrifuging out dirt and oil particles.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: November 14, 2006
    Assignee: MTU Aero Engines GmbH
    Inventor: Wolfgang Weiler
  • Patent number: 7086649
    Abstract: A gasket, sliding about the axis of rotation of a part to be brought closer to or to be spaced apart from another part with which it provides tightness through a pair of lips provided on a ring. The gasket includes a portion of the ring capable of bending to modify the clearance between the corresponding lip and the part, the pressure prevailing in an intermediate cavity, the balance of forces on the joint and hence the clearance and the leak flow rate allowed before the gasket, which is advantageous in particular in a case of ventilation gas for refrigerating an element of the machine in controlled operating conditions.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: August 8, 2006
    Assignee: SNECMA Moteurs
    Inventor: Daniel Georges Plona
  • Patent number: 7055827
    Abstract: An improved oil seal is provided for sealing passage of a rotatable shaft through an end wall of a bearing housing in a turbomachine or the like, wherein the shaft is rotatably supported within the bearing housing by oil-lubricated bearings. The improved oil seal comprises a dynamic oil-air separator and a slinger rotor mounted on the shaft for rotation therewith, the slinger rotor having an outwardly extending slinger ring with an outboard seal face with radially oriented slots and a circumferential groove or grooves.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: June 6, 2006
    Assignee: Honeywell International, Inc.
    Inventors: Todd A. Langston, William L. Giesler
  • Patent number: 6698762
    Abstract: A lubricant leakage stop is provided on the shaft of a rotary device in the form of an annular groove in the shaft. In one embodiment the annular groove is formed with an annular inner surface at the bottom of the groove and with an annular intermediate surface positioned between two portions of the annular inner surface. The intermediate surface has a larger diameter dimension than the two inner surface portions on the axially opposite sides of the intermediate surface. The intermediate surface also has a smaller diameter dimension than that of the two portions of the shaft outer surface on axially opposite sides of the groove. In a second embodiment, the annular groove is formed with an annular inner surface that tapers from the bottom of the groove outwardly to the outer surface of the shaft on one side of the groove.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: March 2, 2004
    Assignee: Emerson Electric Co.
    Inventors: Barry M. Newberg, Gary W. Borcherding
  • Patent number: 6688864
    Abstract: A vacuum pump draws gas by operating a gas conveying body in a pump chamber through rotation of a rotary shaft. The vacuum pump has an oil housing member. The oil housing member defines an oil zone adjacent to the pump chamber. The rotary shaft has a projecting portion that projects from the pump chamber into the oil zone through the oil housing member. Stoppers are located on the rotary shaft to integrally rotate with the rotary shaft and prevent oil from entering the pump chamber. The stoppers are located along the axial direction of the rotary shaft.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: February 10, 2004
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Shinya Yamamoto, Masahiro Kawaguchi, Osamu Uchiyama
  • Patent number: 6629816
    Abstract: An improved oil seal is provided for sealing passage of a rotatable shaft through an end wall of a bearing housing in a turbomachine or the like, wherein the shaft is rotatably supported within the bearing housing by oil-lubricated bearings. The improved oil seal comprises a dynamic oil-air separator and a slinger rotor mounted on the shaft for rotation therewith, the slinger rotor having an outwardly extending slinger ring with an outboard seal face with radially oriented slots and a circumferential groove or grooves.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: October 7, 2003
    Assignee: Honeywell International Inc.
    Inventors: Todd A. Langston, William L. Giesler
  • Patent number: 6612583
    Abstract: A bearing seal with a flat elastic sealing lip (2), positioned between an outer bearing ring (3) and an inner bearing ring (4) with an inner sealing edge (5), sliding circumferentially on the inner bearing ring (4). One surface of the sealing lip (2) facing a lubricant space has radial helical paths formed between members (6) projecting from the surface. The sealing lip slides circumferentially on the inner bearing ring and lubricant flows in the helical paths.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: September 2, 2003
    Assignee: Hilti Aktiengesellschaft
    Inventor: Hans-Christian Donner
  • Patent number: 6578850
    Abstract: A dynamic seal for a drive shaft including a seal housing with at least one inlet for injecting a fluid, (i.e., a liquid or gas) into the seal. The seal also has an expeller device, such as an expeller ring mounted on the drive shaft, for expelling the injected fluid along the drive shaft in the direction of the casing. In addition, the seal may employ sealing rings positioned to prevent the injected fluid from escaping the seal in a direction other than along the shaft toward the casing, such as a glass-filled PTFE ring positioned proximal to the expeller device and a seal adjuster for compressing a graphite-yarn packing ring against the glass-filled PTFE seal ring. Further, the seal may additionally or alternately include a fitted sleeve covering the drive shaft to protect the shaft from wear and corrosion.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: June 17, 2003
    Assignee: General Electric Company
    Inventor: John A. Rothlisberger
  • 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: 6343794
    Abstract: A lubricant seal having no wearing surfaces is provided with a partition plate having a gutter portion and a slinger supported in a labyrinth cavity. This lubricant seal is particularly useful in larger seal applications where the wear of the rotating shafts exceeds the wear characteristics of available seal material. Migrating lubricants are captured in the gutter portion of the partition plate and are directed through the gutter portion around and below the shaft where the lubricant is returned through a drain to a sump.
    Type: Grant
    Filed: October 1, 1999
    Date of Patent: February 5, 2002
    Inventor: Donald J. Brown
  • Patent number: 6311985
    Abstract: An integral yoke/slinger assembly replaces a conventional two-piece design. The integral yoke/slinger arrangement provides a new and improved shaft seal particularly adapted for use in yoke and flange arrangement exposed to a heavy concentration of air entrained foreign material, whereby a more efficient and economical method for manufacturing and assembling a yoke, slinger and seal arrangement for a drive axle system is provided.
    Type: Grant
    Filed: June 28, 1999
    Date of Patent: November 6, 2001
    Assignee: Spricer Technologies, Inc.
    Inventors: Steven Daniel McKeeby, Dale Lee Kwasniewski, Michael Anthony Chamberlin
  • Patent number: 5979903
    Abstract: A slinger for use between a housing and a rotatable member passing therethrough includes an engaging member for mounting on the rotatable member, a slinger portion extending radially outward from the engaging portion, and a sealing portion generally axially extending from the slinger portion wherein the sealing portion extends radially outward when subjected to centrifugal force caused by rotation of the rotatable member to form a secondary seal. The slinger may be formed of a translucent polymer to facilitate a visual inspection of a primary seal located behind the slinger.
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: November 9, 1999
    Assignee: Sanford Acquisition Company
    Inventor: Dale Kwasniewski
  • Patent number: 5895052
    Abstract: A device for sealing the annular gap between a housing and a shaft supported in the housing. The device comprises an inner ring, an outer ring, and an elastomeric sealing member joined to the outer ring. The sealing member has three sealing lips, of which only the first abuts, under prestressing, against the inner ring. The two other sealing lips are configured in such a way that, between their outer ends and the sections of the inner ring lying opposite to their outer ends, gaps are formed which act as a contact-free sealing. In addition, a gap may be provided between a radially extending annular disk portion of the sealing member and an outer flanged section of the inner ring axially opposite the annular disk portion. That gap and the gaps at the ends of the second and third sealing lips form a labyrinth seal.
    Type: Grant
    Filed: June 19, 1997
    Date of Patent: April 20, 1999
    Assignee: Firma Carl Freudenberg
    Inventors: Rolf Drucktenhengst, Uwe Henrich