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| Number | Title | Issue Date |
| 8074998 | Annular seals for non-contact sealing of fluids in turbomachinery According to one embodiment of the disclosure, an annular seal generally includes a hollow member having two ends and an inner surface. The hollow member has a number of depressions formed in and extending around its inner surface. Each of the depressions having a d... | 12/13/2011 |
| 7334983 | Integrated bladed fluid seal Disclosed are various embodiments of a gas turbine blade to vane interface seal for restricting leakage of cooling air and improving the apportioning of the cooling air to the seal. Accordingly, a turbine rotor contains a first and a second stage of radially extendi... | 02/26/2008 |
| 7229248 | Blade structure in a gas turbine In the blade structure in a gas turbine, front-edge including angles are made large. As a result, a curve of a relative relationship between incidence angles ic1 and is1 and pressure loss becomes mild. Entrance metal angles are made small. As a result,... | 06/12/2007 |
| 7201379 | Seal assembly, cartridge, and method A seal assembly and cartridge for sealing a space between a rotating member and a stationary member in which a sleeve extends around the rotating member and with the inner surface of the sleeve being spaced from the outer surface of the rotating member to form a gap... | 04/10/2007 |
| 7178340 | Transition duct honeycomb seal A sealing device for use between a gas turbine combustor transition duct aft frame and a turbine inlet having improved durability, reduced wear on the mating turbine vane, and reduced manufacturing costs, is disclosed. The sealing device has a circumferential length... | 02/20/2007 |
| 7172199 | Inner air seal anti-rotation device An anti-rotation device for preventing rotation of a damper spring and an inner air seal in a stator assembly is provided. The anti-rotation device is formed by a lug positioned within a slot at a center of an inner air seal arc segment. The lug engages a slot in th... | 02/06/2007 |
| 7032904 | Inner air seal anti-rotation device An anti-rotation device for preventing rotation of a damper spring and an inner air seal in a stator assembly is provided. The anti-rotation device is formed by a lug positioned within a slot at a center of an inner air seal arc segment. The lug engages a slot in th... | 04/25/2006 |
| 7029232 | Abradable seals A sealing element for a turbine of a gas turbine engine includes a radially inner surface region provided with an integrally formed seal structure comprising a plurality of radially inwardly projecting walls. The walls may be abradable and may define cells for recei... | 04/18/2006 |
| 6962342 | System for sealing off a gap In fluid machines frequently gaps between movable and stationary structural parts have been sealed off. Frequently so-called labyrinth packings are used, whereby sealing strips brush against the opposite structural part. To this end, a brush layer is configured as a... | 11/08/2005 |
| 6962482 | Turbine shroud segment A shroud segment for being incorporated in a gas turbine engine having a turbine case and a rear turbine case connected with a rear end of the turbine case so as to suppress influence of hot combustion gas on the turbine case and the rear turbine case, is provided w... | 11/08/2005 |
| 6938658 | Expandable spindle plug assembly for use with automatic tire inflation systems An assembly to be mounted in an axle spindle for communicating pressurized air from the axle to a rotary union in a tire inflation system. The assembly includes an arbor having an air flow channel extending therethrough, a flange intermediary of the arbor ends and a... | 09/06/2005 |
| 6827350 | Hybrid honeycomb and brush seal for steam gland A steam gland includes a steam inlet scroll and an extraction scroll axially spaced from one another defining high and low pressure regions. A seal body is disposed between the regions and includes a pair of brush seals axially spaced from one another. Intermediate ... | 12/07/2004 |
| 6739593 | Device for reducing the sealing gap between a rotating component and a stationary component inside a rotary turbo-engine through which a flow passes axially A device for reducing the sealing gap between a rotating component and a stationary component inside a rotary turbo-engine through which a flow passes axially and in which the rotating component and the stationary component each have a surface portion arranged separ... | 05/25/2004 |
| 6499742 | Brush seal assembly and method of using brush seal assembly The invention provides a brush seal assembly, and method of using, for reducing adverse fluid flow effects to a brush seal,.the brush seal assembly comprising a support housing having a passage; a rotating shaft disposed in the passage of the support hous... | 12/31/2002 |
| 6485025 | Metallic cellular structure An abradable turbine seal having a novel honeycomb cellular structure fabricated from metal foils or sheets showing good manufacturability, optimized brazeability and especially good structural integrity and oxidation resistance after brazing to metal sup... | 11/26/2002 |
| 6251494 | Honeycomb structure seal for a gas turbine and method of making same A honeycomb structure seal is provided for the casing of a turbine, particularly a gas turbine, having a base plate facing the casing wall as well as a brush-against section facing the tips of the turbine rotor blades. The seal includes a multi-layered co... | 06/26/2001 |
| 6189891 | Gas turbine seal apparatus A gas turbine seal structure provided between end portions of a moving blade platform and a stationary blade inside shroud. The sealing performance of the seal structure is improved by increasing the resistance to the flow of air. A seal plate (21, 31) is... | 02/20/2001 |
| 6082738 | Rotatable seal element for a rotary machine A rotatable seal element 38 is formed of at least two circumferentially continuous rings 48,50. The rings have decreased thickness T2, T3 in the outward direction. Various construction details are developed which effect the level of ... | 07/04/2000 |
| 5984314 | Rotatable seal element for a rotary machine A rotatable seal element 38 is formed of at least two circumferentially continuous rings 48,50. The rings have decreased thickness T2, T3 in the outward direction. Various construction details are developed which effect the level of ... | 11/16/1999 |
| 5967746 | Gas turbine interstage portion seal device In order to realize a seal device of a gas turbine interstage portion which is excellent in a sealing ability during regular operation of the gas turbine, a gas turbine interstage portion seal device is constructed comprising a honeycomb seal (2) of a rin... | 10/19/1999 |
| 5952080 | Bearing having micropores, and design method thereof A method for designing bearings, of improved performance, the load-bearing surfaces of which feature micropores about 2 to 10 microns deep and, preferably, aspect ratios on the order of 7 to 20. The hydrodynamic pressure distribution of a suite of bearing... | 09/14/1999 |
| 5834094 | Bearing having micropores and design method thereof A method for designing bearings, of improved performance, the load-bearing surfaces of which feature micropores about 2 to 10 microns deep and, preferably, aspect ratios on the order of 7 to 20. The hydrodynamic pressure distribution of a suite of bearing... | 11/10/1998 |
| 5707064 | Modulated pressure damper seal A damper seal (310) and method of sealing and damping a rotating shaft (312) are disclosed. The damper seal (310) includes a stator housing (314), a plurality of cavities (C1, C2, C3, C4), a first sealing blade ... | 01/13/1998 |
| 5540447 | Pressure damper diverging labyrinth seals with circumferential partitions, and method of sealing A damper seal (10) and method of sealing and damping a rotating shaft (12) is provided with a stator housing (14) and at least two sealing blades, an upstream sealing blade (16) and a downstream sealing blade (18). There are at least two partitioning wall... | 07/30/1996 |
| 5518256 | Floating-ring seal The invention concerns a floating-ring seal in which the ring is disposed so that it can move freely inside an annular chamber. Of the four walls of the chamber enclosing the ring, two walls disposed at an angle to each other are stationary while the wall... | 05/21/1996 |
| 5380153 | Method and apparatus for installation of honeycomb core seals A honeycomb seal construction which includes said seal and a mounting ring therefor, said seal having honeycomb cells and being in a press-fit relationship with said mounting ring, there being a brazed joint between the seal and said ring defined by brazi... | 01/10/1995 |
| 5333993 | Stator seal assembly providing improved clearance control A stator seal assembly for a gas turbine engine of a type having a high pressure compressor section and a high pressure turbine section, the stator seal having a seal segment extending between a stator vane support structure and disk seal teeth, the stato... | 08/02/1994 |
| 5314304 | Abradeable labyrinth stator seal In a gas turbine engine having a laybrinth seal between an annular rotor and stator therein, in which the stator is surmounted by a honeycomb structure and the rotor has a knife edge which is mounted to rotate in close annular proximity with said honeycom... | 05/24/1994 |
| 5308088 | Brush seal with flexible backing plate The present invention provides a brush seal having upstream and downstream plates that sandwich therebetween a plurality of bristles that sealingly contact a rotating member. The downstream plate includes primary and secondary backing rings with a flexibl... | 05/03/1994 |
| 5281090 | Thermally-tuned rotary labyrinth seal with active seal clearance control A thermally-tuned rotary labyrinth seal for a gas turbine engine includes an inner annular seal member having axially spaced, radially projecting annular seal teeth, and an outer annular seal member having a stepped honeycomb structure which face the annu... | 01/25/1994 |
| 5215435 | Angled cooling air bypass slots in honeycomb seals A labyrinth seal having a static honeycomb land and a toothed rotary land, an angled passage is formed in the honeycomb land to communicate cooling air from the static vane region of the interstage HP section of the turbine into the aft cavity which is bo... | 06/01/1993 |
| 5178529 | Seal formed of plastic layer having outwardly open depressions The seal or pattern between two machine parts has on one of the sealing gap-forming, facing surfaces (5) a plastic layer (1) with closely juxtaposed depressions (8) which have the form of partly cut off voids of an expanded plastic structure. They are for... | 01/12/1993 |
| 5161942 | Moisture drainage of honeycomb seals A honeycomb seal cooperatively associated with a rotatable blade of a steam turbine having a cylinder, seal include a backing plate fixedly connected to a mounting portion of the cylinder, the mounting portion having an associated moisture removal channel... | 11/10/1992 |
| 5108116 | Laminated finger seal with logarithmic curvature An annular sealing apparatus comprised of at least a pair of axially stacked thin diaphragm members is provided. Each of diaphragm members includes a planar array of radially extending fingers separated by gaps. The fingers have a logarithmic curvature as... | 04/28/1992 |
| 5096376 | Low windage corrugated seal facing strip An improved seal design is provided for use in a gas turbine engine. A corrugated facing strip, with a reduced corrugation height, is attached to the exposed end faces of a seal land to reduce windage losses at the exposed end faces. The corrugated facing... | 03/17/1992 |
| 5071138 | Laminated finger seal An annular seal apparatus of the labyrinth type includes at least a pair of axially stacked thin diaphragm members. Each of diaphragm members includes a planar array of radially and circumferentially extending fingers separated by gaps. The pair of diaphr... | 12/10/1991 |
| 5042823 | Laminated finger seal An annular seal apparatus of the labyrinth type includes at least a pair of axially stacked thin diaphragm members. Each of diaphragm members includes a planar array of radially and circumferentially extending fingers separated by gaps. The pair of diaphr... | 08/27/1991 |
| 5037114 | Labyrinth seal for steam turbines A honeycomb labyrinth seal includes a downstream-most row of honeycomb cells which extends beyond the exit edge of a base portion, so that a portion of each cell of the downstream-most row of honeycomb cells overhangs the base portion by an amount approxi... | 08/06/1991 |
| 5031922 | Bidirectional finger seal An annular shaft seal apparatus of the labyrinth type includes at least two pair of axially stacked thin annular diaphragm members. Each of the diaphragm members includes an annular array of radially and circumferentially extending finger portions definin... | 07/16/1991 |
| 4618152 | Honeycomb seal structure An elongated metallic strip is provided which has oppositely disposed convolutions constituted by sinuosities, corrugations, nodes, or the like, and said convolutions are constituted by nadir and zenith convolutions. Provided on the nadir and zenith convo... | 10/21/1986 |
