Inflatable Seal Or Seal Biased By Inflatable Member Patents (Class 277/583)
  • Patent number: 8960679
    Abstract: In a sealing device (1) for sealing the through hole of an electrode, the pressurizing medium that generates the pressure of mechanical sealings against a rod electrode structure is an inert gas, such as nitrogen. The means for pressing the created sealing ring (6) against the rod electrode structure (4) include a gas distribution chamber (8) surrounding the sealing ring (6); a first channel (9) that is arranged to provide a flow path for the inert gas in between the hose (14) and the gas distribution chamber (8); an annular groove (10) in the sealing surface (7) of the sealing ring (6); and a second channel (11), which is placed in the sealing ring (6) and is arranged to provide a flow path for the gas from the gas distribution chamber to the groove (10) for extruding the gas in between the sealing surface (7) and the rod electrode structure (4).
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: February 24, 2015
    Assignee: Outotec OYJ
    Inventors: Janne Ollila, Tom Rönnberg
  • Patent number: 8701717
    Abstract: A sealing tube is wrapped around the rim and inflated such as to seal the gap between tire and rim if the seal between the tire bead and rim has lost its integrity. After this, the tire can be inflated to specified pressure at a slow rate using a portable compressor. The repair can be done at roadside on any vehicle using inflatable tires usually without demounting the wheel or even jacking up the defective wheel.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: April 22, 2014
    Inventor: Patrick Clancy
  • Publication number: 20130175765
    Abstract: This invention includes a container 2, a rotation shaft 4 penetrating through the container 2, a seal portion 5 provided between the container 2 at a fixed-side and the rotation shaft 4 at a rotation-side, and a foreign material entry prevention unit 7 (a pump 25, a high-pressure water providing line 26, an outlet 27) for preventing fine slag, i.e., foreign material in slag hopper water 8 (muddy water), from entering into the seal portion 5. As a result, with this invention, high-pressure water flowing out of the outlet 27 can prevent fine slag from entering into the seal portion 5.
    Type: Application
    Filed: November 1, 2011
    Publication date: July 11, 2013
    Applicant: Mitsubishi Heavy Industries, Ltd.
    Inventors: Hiroyuki Nomaguchi, Katsuhiko Yokohama, Osamu Shinada, Yoshinori Koyama
  • Patent number: 8474494
    Abstract: A sealing tube is wrapped around the rim and inflated such as to seal the gap between tire and rim if the seal between the tire bead and rim has lost its integrity. After this, the tire can be inflated to specified pressure at a slow rate using a portable compressor. The repair can be done at roadside on any vehicle using inflatable tires usually without demounting the wheel or even jacking up the defective wheel.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: July 2, 2013
    Assignee: Patrick Clancy and Georgene Pappas, a Partnership
    Inventor: Patrick Clancy
  • Patent number: 8322700
    Abstract: A manufacturing system includes a configurable positioning apparatus and machining system for processing a workpiece retained by the positioning apparatus. The positioning apparatus has different configurations for retaining different types of workpieces, such as panels, fuselages, airfoil skins, and engine housings. The positioning apparatus includes a first support rail and a second support rail spaced apart from the first support rail. The first and second support rails support a plurality of stackable headers that cooperate to position the workpiece. The headers have adjustable heights along their lengths in order to accommodate the shape of the workpiece.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: December 4, 2012
    Assignee: Flow International Corporation
    Inventors: Mark A. Saberton, Paul Receveur
  • Patent number: 8246052
    Abstract: A downhole submersible pumping system includes a housing and a bag seal assembly. The bag seal assembly includes a seal bag and a fastening assembly. The fastening assembly is configured to exert a compressive force between inner and outer surfaces of a first end of the seal bag. The fastening assembly may include a first ring attached to the support tube, a second ring and a plurality of fastening members. The first ring may be configured for threaded engagement with the support tube. The second ring is configured for engagement with the first ring.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: August 21, 2012
    Assignee: GE Oil & Gas ESP, Inc.
    Inventor: Robert L. Marvel, III
  • Patent number: 8202059
    Abstract: A system for pressurizing fluids is provided. The system includes a container with an open end and a closed end. The container contains the fluids to be pressurized. The system further includes a dynamic seal capable of expanding to facilitate sealing of the open end of the container. The system also includes a tube arrangement passing through the dynamic seal into the container. The tube arrangement facilitates passage of a first pressurizing medium to pressurize the fluids.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: June 19, 2012
    Inventor: Shervin Javadi
  • Patent number: 8172233
    Abstract: The present invention is directed to a specially configured seal system which provides a barrier to gas leakage flow between a pressurized module and its external environment. The seal includes a shroud covering which protects the sealing interface from its environment when not in use, and retracts to expose the sealing interface when mated. The seal system is constructed and arranged to mate with a seal of identical construction and arrangement or to mate with a flat surface.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: May 8, 2012
    Assignee: The University of Akron
    Inventor: Christopher C. Daniels
  • Publication number: 20120027582
    Abstract: A packing ring assembly for use between a rotating and a stationary component in a turbomachine is disclosed, the assembly including an arcuate packing ring casing, an arcuate packing ring segment positioned at least partially within the packing ring casing, and a resistance component configured to allow movement of the packing ring segment in an axial direction, relative to the rotating component, between a first and second position in response to a pressure condition. In one embodiment, the resistance component allows movement when the pressure condition comprises approximately 30% of the turbomachine load. Also disclosed is an altered surface topography of the rotating component to accommodate variable length teeth extending from the packing ring segment, such that when the packing ring segment is in the first position, a clearance between the packing ring segment and the rotating component is larger than when the packing ring segment is in the second position.
    Type: Application
    Filed: August 2, 2010
    Publication date: February 2, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Rajasekar Natarajan, Rakesh Vamsi Alamsetty, Mahendra Singh Mehra, Nestor Hernandez Sanchez, Manikandan Srinivasan
  • Patent number: 7918462
    Abstract: A method for facilitating the installation of labyrinth packing comprises the step of using pressurized air to extend the packing segments of a portion of a disassembled rotor casing to the close clearance position.
    Type: Grant
    Filed: June 7, 2008
    Date of Patent: April 5, 2011
    Assignee: Star Field Fit, Inc.
    Inventors: Donna L. MacGregor, Thomas W. Rambin
  • Patent number: 7918461
    Abstract: a system for facilitating turbine labyrinth packing comprises: a packing holder 30, packing 20, packing teeth 21, pressurized air supply 50, hose 40, hose stabilizer 41, hose sleeve 42, pneumatic regulator 51, pressure gage 52, male quick disconnect 43, and female quick disconnect 44.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: April 5, 2011
    Assignee: Star Field Fit, Inc.
    Inventors: Donna L. MacGregor, Thomas W. Rambin
  • Publication number: 20090194950
    Abstract: A pressure balanced shaft seal assembly that allows a seal to dynamically respond to angular or radial misalignment of a shaft is disclosed. The pressure balanced shaft seal assembly includes a fixed stator, a floating stator, and a labyrinth seal. In one embodiment, the floating stator and labyrinth seal are mounted within an annular groove formed in the fixed stator such that the floating stator and labyrinth seal may move a predetermined amount in the radial direction with respect to the fixed stator. A spherical interface between the labyrinth seal and floating stator may allow the labyrinth seal to pivot with respect to the floating stator during angular misalignment of a shaft around which the pressure balanced shaft seal assembly is mounted. A pressure balancing annular channel formed in the floating stator allows pressurized seal fluid to balance the axial pressure exerted on the floating stator by the process fluid.
    Type: Application
    Filed: March 4, 2009
    Publication date: August 6, 2009
    Inventors: David C. Orlowski, Neil F. Hoelhe
  • Publication number: 20090140482
    Abstract: A manufacturing system includes a configurable positioning apparatus and machining system for processing a workpiece retained by the positioning apparatus. The positioning apparatus has different configurations for retaining different types of workpieces, such as panels, fuselages, airfoil skins, and engine housings. The positioning apparatus includes a first support rail and a second support rail spaced apart from the first support rail. The first and second support rails support a plurality of stackable headers that cooperate to position the workpiece. The headers have adjustable heights along their lengths in order to accommodate the shape of the workpiece.
    Type: Application
    Filed: November 26, 2008
    Publication date: June 4, 2009
    Applicant: Flow International Corporation
    Inventors: Mark A. Saberton, Paul Receveur
  • Publication number: 20090000753
    Abstract: A sealing strip of a suction roll (4) for a material web machine includes a longitudinal strip element (3) and a longitudinal holder (2) shaped as a U profile open in the direction of a facing surface (41). An element first layer (31) is an easily adjusting material and a second layer (34) is a stiffer material in the loading direction than the first layer. The strip element may be loaded so it or its edge does not substantially bend in the direction of movement of the facing surface. To optionally reduce the effect of abrasion: an inner mantel surface is treated by grain blasting, thermal injection coating, chemical or electro-chemical precipitation coating and/or polymer-based coating; and/or a lubricant or additive is fed between surfaces abrading against each other; and/or at least part of suction holes in a wall of the mantel are broached (71).
    Type: Application
    Filed: June 27, 2006
    Publication date: January 1, 2009
    Applicant: METSO PAPER, INC.
    Inventors: Juhani Vestola, Vesa Nokelainen, Petri Tohonen, Timo Rantanen, Kari Roysko, Erkki Kiiski
  • Publication number: 20080309012
    Abstract: A method and a device for the supply of at least one substance (12; 27) into the interspace (3; 22)between mutually moving, coaxial structural elements (1, 1? and 2; 20;20? and 21), wherein the substance (12; 27) is introduced under pressure into the interspace (3), and wherein excess volume of substance (12; 27) that is introduced is caused to exit the interspace (3; 22). The interspace (3; 22) is closed off at at least one axial end thereof by means of at least one annular, spring-loaded seal (9; 16; 23; 24; 37; 38) which is secured in a retaining part (7; 31; 32) associated with one of the structural elements (1, 1?; 20, 20?)and has a contact face against the other structural element (2; 21), wherein the substance (12; 27), at a corresponding pressure and simultaneously with the supply into the interspace (3; 22), is also separately supplied to a pressure- applying face of the seal (9; 16; 23; 24; 37; 38).
    Type: Application
    Filed: January 4, 2006
    Publication date: December 18, 2008
    Applicant: KARM AS
    Inventor: Magne Hystad
  • Patent number: 7147230
    Abstract: The sealing device is for drum filters or filter presses to form a seal between the rotary drum end faces and the end faces of the trough in which the rotary drums are situated. A sealing element (3) is disposed in a groove (1) on the rotary drum end face, in which the sealing element (3) is pressed into contact against the opposite part by a hose element (2), preferably in form of two flexible hoses (2a, 2b), which can be pressurized internally. The hoses (2a, 2b) are disposed one on top of the other in the groove (1) beneath the sealing element (3). The two open ends of the hose element (2) are provided with sleeves (7) which enclose the ends. The sleeves (7) are held in place in the groove (1) with a holder element (10). Spaces (19a, 19b) are formed on both sides of the middle piece (12) of the holder element. One space (19a) is provided with an inlet (17) for pressurizing medium and the other space (19b) is provided with an outlet (18) for the pressurizing medium.
    Type: Grant
    Filed: September 17, 2002
    Date of Patent: December 12, 2006
    Assignee: Kvaerner Pulping AB
    Inventor: Michael A. Rowe
  • Patent number: 7090219
    Abstract: Sealing device for sealing at least one zone of underpressure or overpressure adjoining a moving surface that includes at least one sealing element, positionable opposite the moving surface to form a front and a rear, with respect to a surface running direction. The sealing device includes a sealing section located at the front and a ventilation section located at the rear. The sealing section is structured to sealingly interact with the moving surface; and the ventilation section is structured and arranged to form a gap with the moving surface that widens in the surface running direction.
    Type: Grant
    Filed: July 23, 2003
    Date of Patent: August 15, 2006
    Assignee: Voith Paper Patent GmbH
    Inventors: Herbert Schrefl, Rüdiger Keinberger, Valentin Weiss, Anton Luger
  • Patent number: 7000556
    Abstract: A sealing device (1) and method for sealing between a chain (2) and a chain pipe (3), said chain for example being an anchor chain on a marine offshore platform or on a ship, and said chain pipe (3) leading for example to a chain locker for onboard storage of the chain in said platform or ship. The sealing device (1) comprises at least two opposing cover lids (7) positioned at the mouth (8) of the chain pipe (3) or an extension collar (7) thereof. The cover lids (7) are movably arranged from an open position into a closed position in which the cover lids (7) abut each other and seal the chain pipe (3) from water intrusion by sealingly engaging a chain link (10) of the chain. Furthermore, the cover lids (7) are provided—in mutual abutment sides (15) thereof—with one or more recesses (16) shaped in conformity with the contacting outer periphery (17) of said chain link (10).
    Type: Grant
    Filed: May 10, 2004
    Date of Patent: February 21, 2006
    Assignee: GVA Consultants AB
    Inventor: Morten Gundersen
  • Patent number: 6886834
    Abstract: A shaft sealing assembly seals a rotary shaft of a refrigerant compressor with a first sealing member, which is a lip seal. The first sealing member has a hollow portion. As the pressure in the interior space of the compressor housing increases, an outer wall surrounding the hollow portion is elastically deformed. Accordingly, a lip portion of the first sealing member receives a tension that weakens a force pressing the lip portion against the rotary shaft. Therefore, the sealing assembly improves the durability of the lip portion and maintains a satisfactory property of the lip portion to follow displacement of the rotary shaft at the same time.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: May 3, 2005
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Masami Osako, Takeshi Yamada, Masakazu Murase
  • Patent number: 6854736
    Abstract: A seal assembly and a rotary machine in combination with the seal assembly are provided. The seal assembly includes a seal and a biasing device configured to produce a force for mechanically biasing the seal toward a first position relative to the rotatable portion. The seal is further responsive to pressurized fluid for creating a force opposed to the biasing force to cause movement of the seal toward a second position closer to the rotatable portion than the first position, thereby reducing flow leakage between the stationary portion and the rotatable portion. The pressurized fluid may be the working fluid produced by or used within the rotary machine.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: February 15, 2005
    Assignee: Siemens Westinghouse Power Corporation
    Inventor: Hubertus Edward Paprotna
  • Patent number: 6840519
    Abstract: One embodiment of the present invention comprises an actuating mechanism for a turbine comprising a compliant member (meaning at least one compliant member) comprising a series of serpentine folds forming a plurality of fold sections and a central cavity (meaning at least one central cavity) interposed between the adjacent fold sections wherein the compliant member is movable between a first retracted position and a second extended position upon introduction of a pressurized medium into the central cavity and dispersion of the pressurized medium within the serpentine folds.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: January 11, 2005
    Assignee: General Electric Company
    Inventors: Osman Saim Dinc, Mehmet Demiroglu, Hamid Reza Sarshar, Paul Gladen, Keith Hochhalter
  • Patent number: 6658987
    Abstract: A sealing device for a piston that is subjected to the action of a pressure medium and that is arranged in a working cylinder, whereby a piston rod guide is arranged in or on the working cylinder and the rod guide has annular recesses. In addition, elastic sealing rings and a guide are located in the recesses. At least one additional slot provided for accommodating an additional elastic sealing ring is configured in the rod guide or in a cylinder ring connected to the pressure chamber or working chamber, and which surrounds the piston rod in a concentric manner. In addition, a mechanism is provided in order to, if required, apply forces that are directed from the outside in a manner that is radial to the piston rod onto the additional sealing ring, so that the sealing ring is moved or deformed such that it is transferred from a non-sealing position to a sealing position.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: December 9, 2003
    Assignee: Log Hydraulik GmbH
    Inventor: Ludwig Oberhauser
  • Patent number: 6395137
    Abstract: The invention concerns a seal construction for a suction roll in a paper machine. The seal construction (10) comprises a substantially U-section holder (12) open towards the inner face (3) of the roll mantle, a seal which is mounted in the holder, which is placed in the axial direction of the roll, and which consists of a frame part (13) of the seal fitted in the holder (12) and of a wear part (11), which is fix to the frame part and which is placed against the inner face (3) of the roll mantle, and which seal construction also comprises loading means, such as a loading hose (15) or equivalent, by whose means the seal can be shifted in the holder (12) against the inner face (3) of the roll mantle.
    Type: Grant
    Filed: July 10, 2000
    Date of Patent: May 28, 2002
    Assignee: Valmet Corporation
    Inventor: Jorma Snellman
  • Patent number: 6302399
    Abstract: Sealing device for laterally sealing of at least one overpressure zone and vacuum zone in a paper machine and process for sealing a moving surface with the sealing device. The sealing device includes a moving surface adjacent to the at least one overpressure zone and vacuum zone, at least one sealing element positioned opposite the moving surface, a holder in which the sealing element is mounted for movement relative to the moving surface, at least one loading element arranged to load the sealing element in a direction toward the moving surface, and at least one reset element arranged to act against the at least one loading element and to move the sealing element away from the moving surface. A sealing gap formed during operation between the sealing element and the moving surface is set by at least one of the reset element and the loading element.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: October 16, 2001
    Assignee: Voith Sulzer Papiertechnik Patent GmbH
    Inventor: Hans Prinzing
  • Patent number: 6254732
    Abstract: A sealing construction for loading a seal against a suction roll in a paper machine includes a seal having a wear surface, side surfaces and a lower surface. The seal is fitted from its holder to the structure of a suction box which is inside the suction roll. The seal essentially covers the whole operating length of the suction roll, extending from its wear surface to the inner face of the mantle of the suction roll. The seal is moveable in the direction of the radius of the suction roll in the holder by a pressure effect that is applied directly onto the lower surface of the seal. Negative pressure or vacuum can be applied during operation to draw the seal into its holder to reduce seal wear.
    Type: Grant
    Filed: May 6, 1999
    Date of Patent: July 3, 2001
    Assignee: Metso Paper, Inc.
    Inventor: Hannu Savolainen
  • Patent number: 5975532
    Abstract: A seal construction for a suction roll in a paper machine including a substantially U-section holder open toward an inner face of the roll mantle and a seal mounted in the holder and extending in the axial direction of the roll. The seal includes a frame part arranged within the holder and a wear part fixed to the frame part and placed against the inner face of the roll mantle. The seal construction also includes a loading hose for shifting the seal in the holder against the inner face of the roll mantle. In the interior of the frame part of the seal, an inner loading member is arranged to lock the frame part of the seal in contact with the holder so as to position the wear part of the seal in the desired position in relation to the inner face of the roll mantle.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: November 2, 1999
    Assignee: Valmet Corporation
    Inventors: Heikki Karttunen, Hannu Savolainen
  • Patent number: 5906435
    Abstract: A rotary drum mixer mixes product matter in a particulate form. A scoop section for the mixer has scoop blades which are radially enclosed by a peripheral wall which rotates with the drum. A stationary hood includes an outer face portion which covers the end wall of the scoop section and a peripheral portion which covers the peripheral wall of the scoop section, but neither the outer face portion nor the peripheral portion of the stationary hood contact product matter. The scoop blades are relatively flat and are angled into the direction of rotation. A back section is also included for the scoop blades. A seal assembly is positioned toward the inner diameter of the scoop blades and biases radially outward. The seal assembly may alternatively be positioned at the outer diameter of the scoop section, and/or the seal member may alternatively be biased radially outward. An inflatable bladder is used to radially bias the seal member against a hoop.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: May 25, 1999
    Assignee: Continental Products Corporation
    Inventors: Thomas A. Callaghan, William J. Callaghan, D. Coyne Callaghan, Jr.