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| Number | Title | Issue Date |
| 8162598 | Gas turbine sealing apparatus A gas turbine comprises forward and aft rows of rotatable blades coupled to a disc/rotor assembly, a row of stationary vanes positioned between the forward and aft rows of rotatable blades, and rotatable sealing apparatus. Each of the stationary vanes comprises an i... | 04/24/2012 |
| 7407370 | Axial and circumferential seal for stacked rotor and/or stator assembly Disclosed herein is a rotor assembly for a steam turbine including a stacked rotor section having rotor plates. The rotor plates include a main body portion having a plate shape and a first axial face and a second axial face opposite to the first axial face. The rot... | 08/05/2008 |
| 7404678 | Rotor recentering after decoupling A recentering device for a rotor shaft for recentering a rotor shaft relative to an axis X of a stator structure in the event of decoupling caused by excessive imbalance. The shaft, in normal operating conditions, lies on the axis X and is radially supported by a be... | 07/29/2008 |
| 7367774 | System for protecting a main shaft of an engine having a fusible bearing A turbomachine comprising at least a first rotary assembly with a first shaft, a stator, and bearings secured to the stator and suitable for supporting the shaft, one of the bearings being capable of giving way when an unbalance occurs in the rotary assembly, at lea... | 05/06/2008 |
| 7367776 | Turbine engine stator including shape memory alloy and clearance control method A turbine engine stator assembly in juxtaposition across a radial gap with a rotary blading assembly includes a radially movable shroud and a gap control member made of at least one shape memory alloy (SMA). The SMA is selected and preconditioned to deform pre-selec... | 05/06/2008 |
| 7360987 | Stator of a high-pressure turbine of a turbomachine, and a method of assembling it A method of assembling sectored elements of an annular stator of a high-pressure turbine of a turbomachine about a longitudinal axis of said turbine, in which method an angular distribution pattern is defined for distributing elements of the stator over a predetermi... | 04/22/2008 |
| 7360986 | System for blocking a main shaft of an engine having a fusible bearing A turbomachine including at least a first rotary assembly with a first shaft, a stator, and bearings secured to the stator and suitable for supporting the first shaft, one of the bearings being capable of giving way when an unbalance occurs in the first rotary assem... | 04/22/2008 |
| 7338255 | Turbo-type fluid machine and a stepped seal apparatus to be used therein A turbo-type fluid machine comprises a mouth ring part provided between a shroud of an impeller and a pump casing and having a seal function. The mouth ring part comprises an impeller ring on a side of the shroud of the impeller and a casing ring provided on a side ... | 03/04/2008 |
| 7326032 | Cooling fan with adjustable tip clearance A cooling fan comprising a fan housing and a plurality of blades rotatably disposed within a conduit through the fan housing. Each of the plurality of blades extends radially outward from a hub to a tip. The radial gap between the tips of the blades and the conduit ... | 02/05/2008 |
| 7246994 | Spacing arrangement A spacing arrangement for a gas turbine engine 10. The spacing arrangement being arranged such that as a rotor blade 26 of a compressor 13 rotates, the rotor disc 28 will move outwards and forwards to maintain a substantially constant gap... | 07/24/2007 |
| 7125223 | Method and apparatus for turbomachine active clearance control An apparatus for providing active clearance control between blade tips and seals in a turbomachine comprising: a first stator carrier segment, with stator seals centripetally disposed on it; a second stator carrier segment located along a same circumference as the f... | 10/24/2006 |
| 6887034 | Centrifugal pump having adjustable clean-out assembly A centrifugal pump having an adjustable clean-out assembly (60), the position of which determines the face clearance between a wear plate (72) and an impeller (20). The clean-out assembly includes an end cover (63) that threadedly mounts ... | 05/03/2005 |
| 6739829 | Self-compensating clearance seal for centrifugal pumps A seal for use in a centrifugal pump of the type used for pumping an abrasive slurry, and having a sealing ring groove formed in the pump casing and an arrangement for supplying flushing water, comprising a radial seal having a sealing end, a water receiving end, an... | 05/25/2004 |
| 6599086 | Adjustable pump wear plate positioning assembly An adjustable wear plate positioning assembly for a centrufigal pump having a casing with an inlet port offset from a pump impeller mounted within an impeller housing. The positioning assembly includes a wear plate carrier extending between a front wall o... | 07/29/2003 |
| 6505834 | Pressure actuated brush seal An embodiment providing a seal assembly for turbomachinery for controlling flow of a fluid medium in a fluid path comprises a casing having an internal pressure load path and a seal carrier chamber. A movable seal carrier is disposed within the seal carri... | 01/14/2003 |
| 6457933 | Methods and apparatus for controlling bearing loads within bearing assemblies An orifice plate assembly for a gas turbine engine that facilitates extending a useful life of bearing assemblies within the gas turbine engine is described. Each orifice plate assembly is coupled in flow communication with an engine air source, and inclu... | 10/01/2002 |
| 6375414 | Seal for a pump, and a pump comprising the seal A pump (1) for pumping a slurry comprises a pump housing (2) defining a pumping chamber (5) with an impeller (6) located therein for pumping the slurry from an axial inlet port (7) to a radial outlet port (8). The impeller (6) is carried on a pump shaft (... | 04/23/2002 |
| 6042337 | Sealing system for a hydraulic machine A Kaplan turbine or similar hydraulic machine has a hub body (1) fixed to the turbine shaft with radial blades attached to the hub body. The blades are fitted with oil lubricated bearings in the hub body. A sealing arrangement for the oil system has first... | 03/28/2000 |
| 5993176 | Magnetically-driven centrifugal pump A magnetically-driven centrifugal pump comprises a pump body having a pump chamber extending therein from a pump body open end to a pump body closed end, and includes a liquid inlet port and a liquid outlet port for accommodating passage of liquid to and ... | 11/30/1999 |
| 5971704 | Device for adjusting the running clearance of an impeller An improved device for adjusting the running clearance of a pump impeller is shown and described. In a preferred embodiment, an annular adjustment member is positioned adjacent to a pump impeller and the pump housing, the impeller being spaced from the ad... | 10/26/1999 |
| 5941537 | Pressure actuated static seal A static seal includes first and second spaced apart walls having a gap therebetween for channeling a pressurized fluid. The first wall includes a recessed seat facing the second wall defined by spaced apart first and second faces joined together at a bas... | 08/24/1999 |
| 5921748 | Centrifugal pump A centrifugal pump comprises an impeller (2a and 2b) which is rototable about an axis (X--X) inside a static volute (1). The pump is further provided with a sealing arrangement (11). The sealing arrangement (11) reduces or substantially eliminates the cle... | 07/13/1999 |
| 5820340 | Pump shaft tension release device A device for releasing tension in a pump shaft is shown and described. An annular elastomeric member is positioned on the circumference of the pump shaft, the elastomeric member having circumferentially spaced holes provided in a surface distal to the sha... | 10/13/1998 |
| 5785493 | Turbocharger for internal combustion engine A turbocharger for an internal combustion engine, for improving the turbocharger efficiency by manufacturing a compressor housing by a non-expensive method excellent in productivity, has a structure that a housing wall member located on an inner periphery... | 07/28/1998 |
| 5613829 | Gas turbine subassembly having a brush seal A gas turbine subassembly having a stator, a rotor, and an annular brush seal which is attached to the stator and whose free end is in line-to-line contact with a first circumferential portion of the rotor's outside surface during a first rotation/load st... | 03/25/1997 |
| 5509780 | Apparatus and method for providing uniform radial clearance of seals between rotating and stationary components Arcuate seal segments have radially directed seal faces forming part of a labyrinth seal in a turbine. The segments are adjustably spaced from the locating flanges of the groove formed on a stationary part of the turbine housing to compensate for any dist... | 04/23/1996 |
| 5503405 | Apparatus for providing uniform radial clearance of seals between rotating and stationary components Arcuate seal segments have radially directed seal faces forming part of a labyrinth seal in a turbine. The segments are adjustably spaced from the locating flanges of the groove formed on a stationary part of the turbine housing to compensate for any dist... | 04/02/1996 |
| 5362072 | Turbine radial adjustable labyrinth seal In an elastic fluid turbine employing packing rings and spill strips or tip seals to minimize leakage between rotating and stationary components, an improvement in the packing rings and spill strips utilizing the combination of: interconnected first and s... | 11/08/1994 |
| 5344284 | Adjustable clearance control for rotor blade tips in a gas turbine engine In a gas turbine engine having rotor blades which rotate with the blade tips in proximity with a surrounding rub strip in the engine shroud, an improvement is provided in the form of a radially adjustable rub strip-air bladder assembly. That is, an air bl... | 09/06/1994 |
| 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 |
| 5332358 | Uncoupled seal support assembly A seal support assembly for a gas turbine engine includes a stator seal support having an annular seal backing extending axially away therefrom and having an integral retention flange at one end thereof. The retention flange includes a retention groove. A... | 07/26/1994 |
| 5096375 | Radial adjustment mechanism for blade tip clearance control apparatus A mechanical clearance control apparatus operable for controlling the clearance between the rotor blade tips and the casing shroud of a gas turbine engine employs a radial adjustment mechanism. The adjustment mechanism includes an externally threaded holl... | 03/17/1992 |
| 5056988 | Blade tip clearance control apparatus using shroud segment position modulation A clearance control apparatus has a pair of positioning mechanisms for quickly controlling the clearance between rotor blade tips and a shroud segment of a gas turbine engine casing. The positioning mechanisms are supported by axially-spaced casing bosses... | 10/15/1991 |
| 4993917 | Gas compressor having dry gas seals A gas compressor, particularly of the kind for boosting pressure in gas transmission lines, has an impeller mounted on a shaft located between two bearings with the gas space surrounding the impeller being separated from the bearings by dry gas seals, inc... | 02/19/1991 |
| 4863345 | Turbine blade shroud structure The invention is aimed at avoiding excessive wear of the tips of the turbine blades in deceleration of a gas turbine engine, and provides a control ring which is loosely supported by fixed structure. The control ring is made from a material which reacts m... | 09/05/1989 |
| 4702672 | Fluid flow machine A fluid flow machine of the radial type of construction with adjustable guide blades in a radially extending annular channel of the fluid flow housing. The bearing support of the guide blades takes place in a guide blade carrier that represents a one-piec... | 10/27/1987 |
| 4688378 | One piece band seal A one-piece seal which surrounds the end of the burner duct to prevent leakage of high pressure air into the turbine inlet.... | 08/25/1987 |
| 4650397 | Sleeve seal A seal member particularly adapted to seal leakage gaps between turbine vanes in a variable geometry turbine vane assembly comprises a sheet metal strip having a first flange and a second flange angularly disposed with respect to the first flange. The fir... | 03/17/1987 |
| 4637780 | Water ring vacuum pump having adjustable part plates and a hollow impeller A water ring vacuum pump having a body with end members, an impeller in the body and having a shaft which extends through the end members and being journalled for rotation therein. One end member has an inlet and the other an outlet. A port plate is locat... | 01/20/1987 |
| 4575306 | Slurry pump mechanical seal mounting assembly A mechanical seal mounting assembly for a centrifugal high solids concentration slurry pump is disclosed. A rotating seal ring adapter is secured to the pump's impeller drive shaft for rotation with the shaft. A stationary seal ring adapter is secured to ... | 03/11/1986 |
