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| Number | Title | Issue Date |
| 7815193 | Dry-running piston rod sealing arrangement, and method for sealing a piston rod using one such arrangement The invention relates to a dry-running piston rod sealing arrangement (1) for sealing a piston rod (2) mounted in a longitudinally displaceable manner. The sealing arrangement comprises at least one sealing ring (5) having a sealing surface (... | 10/19/2010 |
| 7775527 | Shaft sealing arrangement for a pump for delivering hot fluids A shaft sealing arrangement for a pump for delivering hot fluids includes a dynamic shaft seal (4), in particular a slide ring seal, in order to seal a rotatable shaft (2) relative to a housing (1), and a cooling ring (5) which is mounted... | 08/17/2010 |
| 7744092 | Methods and apparatus to facilitate sealing in rotary machines A method and seal assembly for sealing a rotary machine including a rotary component and a stationary component is provided. The method includes providing a plurality of flexible leaf plates in an opening defined between a pair of spaced walls that include an adjust... | 06/29/2010 |
| 7641200 | Variable clearance packing ring arrangement Disclosed is a variable clearance packing ring arrangement including a packing ring, wherein the packing ring includes a sealing face. The variable clearance packing ring arrangement also includes an actuating arrangement internal to the packing ring. ... | 01/05/2010 |
| 7374211 | Rotary joints Rotary joints are provided, to allow fluid to flow from a stationary member to a rotating member. The rotary joints include a housing, configured to fit over the rotating member, a rotatable coupling disposed within the housing, configured to be fixedly attached to ... | 05/20/2008 |
| 7347214 | Rotary shaft sealing mechanism and liquid processing apparatus The present invention provides a rotary shaft sealing mechanism having the seal between the rotary shaft and the seal ring improved, and a liquid processing apparatus including the rotary shaft sealing mechanism. The cleaning processing apparatus 1 com... | 03/25/2008 |
| 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 |
| 7305963 | Blade-thru-slot combustion engine, compressor, pump and motor This is simple and efficient rotary machine that can be implemented as compressor, pump, motor and mainly as internal combustion engine. The engine comprises a housing, a rotor(s) with a radial blade(s), a chamber(s) swept by the blade(s), an intersecting planar val... | 12/11/2007 |
| 7234918 | Gap control system for turbine engines Embodiments of the invention relate to a system and method for controlling the size of gaps in a turbine engine. In many instances, it is desirable to minimize the size of the gaps between neighboring rotating and stationary components in a turbine engine, such as b... | 06/26/2007 |
| 7182345 | Hydrodynamic brush seal A hybrid brush seal is provided having two bundles of axially spaced seal bristles each of which are mounted in a ring shape on a first machine component with bristle ends directed at a sealing surface of the second, rotating machine component. The bristle ends are ... | 02/27/2007 |
| 7150477 | Rotary joints Rotary joints are provided, to allow fluid to flow from a stationary member to a rotating member. The rotary joints include a housing, configured to fit over the rotating member, a rotatable coupling disposed within the housing, configured to be fixedly attached to ... | 12/19/2006 |
| 7135240 | Thermal spray compositions for abradable seals A thermal spray composition and method of deposition for abradable seals for use in gas turbine engines, turbochargers and steam turbines. The thermal spray composition includes a solid lubricant and a ceramic preferably comprising 5 to 60 wt % total of the composit... | 11/14/2006 |
| 7090220 | Cartridge-type bearing seal for machine tool spindle A cartridge type bearing seal facilitates the prevention of contaminant ingress between a spindle rotor and a spindle housing, particularly in situations where a circumferentially uniform fluid pressure is generated within the annular volume of the spindle housing. ... | 08/15/2006 |
| 7052014 | Snap together bearing isolator The assembly includes rotor and stator elements each having an inclined plane or surface juxtaposed to each other. This is a metallic assembly and the rotor and stator also have juxtaposed cavities. The stator cavity being of sufficient size to accommodate a sealing... | 05/30/2006 |
| 7052015 | Cooling arrangement for brush seal A brush seal adapted to restrict a fluid flow through a gap between a first component and a second component, comprising: a body; a brush pack secured to the body; and a passage through the body for introducing a cooling flow to the gap. The passage has a first end ... | 05/30/2006 |
| 7052017 | Rotary machine with seal The so-called comb-type labyrinth sealing device (S1) is disposed in a gap between a rotor blade (2), i.e. a rotating member, and a labyrinth packing (9), i.e. a stationary member. The sealing device (S1) has a plurality of sealing fins (... | 05/30/2006 |
| 7032903 | Brush-seal designs for turbines and similar rotary apparatus A seal segment for a turbine is provided having labyrinth teeth and a brush seal disposed along the labyrinth teeth. A plurality of the segments for a seal ring. The segments are separable from each other so that the seal can retract. Each segment has two ends, each... | 04/25/2006 |
| 7025356 | Air-oil seal An air-oil seal having a runner surface comprising at least one component selected from the group consisting of: polyetheretherketone; polyetherimide; polyphenylene sulfide; and polyetherketoneketone. ... | 04/11/2006 |
| 7004475 | Flow dam design for labyrinth seals to promote rotor stability A method and apparatus for reducing steam swirl in a steam turbine. A plurality of seal segments (14) are circumferentially juxtaposed to form a seal ring (12) encircling the turbine shaft (10), each seal segment (14) supporting a plurali... | 02/28/2006 |
| 6971844 | Horizontal joint sealing system for steam turbine diaphragm assemblies Spline seals are provided in registering end faces of upper and lower diaphragm segments in a steam turbine at each of the horizontal joints. The diaphragm segments each include inner and outer semi-annular rings with circumferentially spaced partitions extending th... | 12/06/2005 |
| 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 |
| 6935631 | Sheet brush seal A primary technical goal of the present invention is to improve seal performance of a brush seal and to provide flexibility for preventing wear of the brush seal due to friction. The sheet brush seal disk comprises a first halved brush seal disk and a mating second ... | 08/30/2005 |
| 6935632 | Automatically disengaging spacing mechanism for a mechanical seal A spacing mechanism is provided for locating at least one rotatable component relative to a stationary component of a mechanical seal. The spacing mechanism is configured to automatically disengage from the rotatable seal component, and/or its associated hardware, u... | 08/30/2005 |
| 6923783 | Valve assembly A valve assembly for the sealed reception of an elongated object is provided. The assembly includes a valve body defining at least one opening configured and dimensioned to permit entry of an elongated object and defining a central longitudinal axis, and an elongate... | 08/02/2005 |
| 6918739 | Seal support A turbine engine has a rotor shaft rotatably carried within a non-rotating support structure. A seal is carried by the support structure circumscribing the shaft and having a flexible sealing element for sealing with the shaft. A chamber is located between the seal ... | 07/19/2005 |
| 6913265 | Brush seal assembly, method of manufacture and use A brush seal assembly including a bristle strip having a plurality of bristles mounted at an angle to at least one rail, and an annular holder for supporting the bristle strip is provided. In one embodiment, the bristle strip is flexible such that the strip can be r... | 07/05/2005 |
| 6910858 | Seal A turbine engine has a rotor shaft rotatably carried within a support structure. A seal is carried by the support structure circumscribing the shaft and having a brushpack for sealing with the shaft. A first plate on a first side of the brushpack has a first radial ... | 06/28/2005 |
| 6910854 | Leak resistant vane cluster A vane cluster for a turbine engine compressor or turbine includes a shroud 12 with a nonlinear slot 26 extending therethrough to divide the shroud into thermally independent shroud segments 24. The slot is bordered by matching nonlinear surface... | 06/28/2005 |
| 6854735 | In situ load sharing brush seals Multistage brush seals are made by initially specifying designs thereof for collectively sharing a differential pressure along an adjacent land subject to relative rotation with the seals. The seals are modified to share the loading without blowdown therefrom. The s... | 02/15/2005 |
| 6840519 | Actuating mechanism for a turbine and method of retrofitting 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... | 01/11/2005 |
| 6659227 | Oil leak prevention structure for vacuum pump A Roots pump rotates a plurality of rotors by a pair of rotary shafts to draw gas. Each rotary shaft extends through a rear housing member of the Roots pump. A plurality of stoppers are located on each rotary shaft to integrally rotate with the correspond... | 12/09/2003 |
| 6648332 | Steam turbine packing casing horizontal joint seals and methods of forming the seals Spline seals are formed at the joints between packing casing shells in a steam turbine having high pressure and intermediate pressure turbine sections sealing between the high pressure and intermediate pressure regions on opposite axial sides of the packi... | 11/18/2003 |
| 6644667 | Seal assembly and rotary machine containing such seal A seal assembly which, among other applications, may be used for sealing fluid leakage between a steam or combustion (gas) turbine rotor and a turbine stator body. The seal assembly includes elements having a plurality of spaced seal members with slots th... | 11/11/2003 |
| 6637749 | Seal for clean-in-place enclosure for a packaging machine A seal for the selective sealing of a rod which is reciprocatable within an opening through the wall of an enclosure such as the filling station of a packaging machine, the seal being actuatable to selectively provide a fluid-tight seal between the rod an... | 10/28/2003 |
| 6485022 | Metallic labyrinth seal A two-piece interlocked labyrinth seal device for providing a seal between a housing and a shaft formed of two ring members, specifically a rotor and stator, connected to each other by a plastically deforming unitizing element. The rotor further includes ... | 11/26/2002 |
| 6435513 | Combined brush seal and labyrinth seal segment for rotary machines A brush seal is comprised of arcuate seal segments having ends cut in a radial direction with bristles "canted" at an approximate 45° angle relative to radii of the segments, leaving triangular regions adjacent one end of each segment devoid of bristles ... | 08/20/2002 |
| 6394459 | Multi-clearance labyrinth seal design and related process A packing ring seal assembly for use in a steam turbine for minimizing leakage flow between stationary and rotating steam path parts includes a stationary annular seal ring having a plurality of axially spaced, annular sealing teeth extending in a radial ... | 05/28/2002 |
| 6390477 | Rotary shaft bearing isolator seal A bearing isolator seal having a shaft seal assembly that includes a stator housing comprising two components, an interior and an exterior component, the two stator housing components being selectively connectable, and axially positionable (relative to th... | 05/21/2002 |
| 6330790 | Oil sump buffer seal A buffer seal arrangement is provided for improved buffer sealing of oil sump seals in gas turbine engines. The buffer seal arrangement includes a three section labyrinth seal. Disposed between the first and second section is a buffer air supply annulus f... | 12/18/2001 |
| 6273426 | Hydrodynamic seal and a method for providing the same A hydrodynamic seal efficiently protects an interior cavity of an enclosure from external elements. The seal has an upper portion having a recess formed in a center section of the upper portion. A lower portion, having a raised portion, abuts the upper po... | 08/14/2001 |
