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| Number | Title | Issue Date |
| 7434813 | Large radial movement compliant seal A compliant seal assembly having a seal pack carrier having an upstream face and a downstream face that defines a slot, and a seal pack having an upstream face and a downstream face slideably mounted within the slot. The seal pack carrier and the seal pack contact e... | 10/14/2008 |
| 7413194 | Pressure balanced annular seal This invention provides a segmented annular seal (10) the sealing leakage gaps between relatively movable components 14,16 between high and low pressure regions in a gas turbine engine, for example for sealing an engine shaft 16. The seal compri... | 08/19/2008 |
| 7396017 | Shaft seal assembly A shaft seal assembly for maintaining a seal during shaft misalignment comprising a first sealing means adjacent said shaft with a defined clearance between said shaft and said sealing means, said shaft moveable axially in relation to said first sealing means; a sec... | 07/08/2008 |
| 7392988 | Rotary seal A rotary seal housing having opposing ends, a first fluid conducting slot at one of the opposing ends, a pair of spaced apart fluid conducting slots at the other opposing end, and sets of apertures connecting the first fluid conducting slot with the pair of fluid co... | 07/01/2008 |
| 7354191 | Mortar mixer and trunnion assembly A mortar mixer includes a substantially cylindrical drum having end plates supporting trunnion assemblies, with housings, having an interior space defined by an interior surface around the paddle shaft. A first seal is located adjacent the end plate and is positione... | 04/08/2008 |
| 7344139 | Hydraulic shaft sealing arrangement for high-temperature applications On a hydraulic shaft sealing arrangement for high-temperature applications, a heat protection ring (21) and an air chamber (22) are arranged before the annulus (8) containing the sealing medium (10) for thermal insulation, while spacers (... | 03/18/2008 |
| 7291947 | Electric rotating machine with bearing seals Hydrogen gas is circulated to cool an electric rotating machine main body, and brush seals are provided to contact a predetermined position on the outer circumferential surface of a rotating shaft. As a result, contact of a sealing oil and the hydrogen gas, contact ... | 11/06/2007 |
| 7278840 | Compliant viscous seal for fluid transfer device A viscous seal for fluid transfer devices that deviates from the conventional wisdom of avoiding contact between the seal and a rotating drive shaft of the fluid transfer device. Instead of avoiding contact, contact between the seal and drive shaft is used to effect... | 10/09/2007 |
| 7222861 | Sealing in a hydraulic turbine unit System for providing sealing between a rotor and a turbine casing in a hydraulic turbomachine includes a sealing ring arranged in a peripheral region of the rotor. The sealing ring forms at least one hydrostatic bearing with respect to at least one of the rotor and ... | 05/29/2007 |
| 7210687 | Shaft seal assembly A primary technical goal of this shaft seal device is to decrease the pressure of a sealant at a communication passage between a fluid chamber and a first seal portion, to further reduce the pressure by a floating ring, to make the first seal portion pressure-proof ... | 05/01/2007 |
| 7201241 | Self relieving seal Self relieving seals of this invention comprise an elastomeric seal body having a first sealing surface and a second sealing surface for contact with respective drill bit sealing surfaces. The seal includes a pair of external surfaces that each extend along the seal... | 04/10/2007 |
| 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 |
| 7172201 | Sealing ring, especially radial shaft seal A sealing ring has a sealing disk having a fastening part and a seal part. The fastening part is connected to a first stationary machine part and the seal part seals a movable machine part and is oriented in an axial direction toward an atmosphere side or a medium s... | 02/06/2007 |
| 7160622 | Oil repelling agent An oil repelling agent to coat a dynamic pressure device, such as a fluid dynamic pressure bearing device, includes a UV coloring agent, a fluorine-based polymer and a solvent. In an exemplary embodiment of the invention, the concentration of the UV coloring agent c... | 01/09/2007 |
| 7159873 | Shaft seal The present invention relates to a seal assembly for use in a rotary machine. The seal assembly comprises a first member and a seal carrier mounted to the first member by a mounting member, a second member spaced from the first member and a seal running member posit... | 01/09/2007 |
| 7134668 | Differential pumping seal apparatus A differential pumping seal apparatus includes a differential pumping seal for sealing a first space and a second space from each other in a non-contact manner, and a back up seal mechanism for sealing the first space and the second space from each other in a contac... | 11/14/2006 |
| 7121553 | Bushing for a hydraulic valve A bushing for a hydraulic valve has a bushing wall having openings allowing passage of a hydraulic medium to and from an interior of the bushing. The openings have an opening wall that at least across a portion of a circumference of the opening wall is formed as a m... | 10/17/2006 |
| 7093979 | Aerostatic bearing A guide member and a slide are disposed such as to be opposed to each other through a bearing clearance therebetween. Air is supplied to the bearing clearance through a main pipe, a branch pipe and an orifice provided in the slide. Shape and size of each portions of... | 08/22/2006 |
| 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 |
| 7086648 | Acoustic seal The invention relates to a sealing device having an acoustic resonator. The acoustic resonator is adapted to create acoustic waveforms to generate a sealing pressure barrier blocking fluid flow from a high pressure area to a lower pressure area. The sealing device p... | 08/08/2006 |
| 7047596 | Structural bushing application for highly loaded composites lugs A composite lug assembly includes a composite lug defining a loaded side and an unloaded side and having at least one hole extending therebetween, a shoulder bushing assembly including a first side bushing having a first cylindrical portion adapted to fit in the hol... | 05/23/2006 |
| 6991235 | Gas-buffered seal assembly and method therefor A gas-buffered brush seal assembly and associated method are provided. The seal assembly includes at least one brush seal that defines an interface with a rotatable member. The seal assembly is configured to deliver a gas to the interface so that the gas at least pa... | 01/31/2006 |
| 6976548 | Self relieving seal Self relieving seals of this invention comprise an elastomeric seal body having a first sealing surface and a second sealing surface for contact with respective drill bit sealing surfaces. The seal includes a pair of external surfaces that each extend along the seal... | 12/20/2005 |
| 6976679 | Inter-fluid seal assembly and method therefor An inter-fluid brush seal assembly and associated method are provided. The seal assembly defines a gas passage for supplying gas to interfaces with a rotatable member. At least one of the interfaces is defined by a brush seal, and the flow of the gas through the int... | 12/20/2005 |
| 6941774 | Optical fiber preform-heating furnace The present invention provides an optical fiber preform-heating furnace that is simple in its structure and excellent in uniformity of the temperature distribution in a circumferential direction of an optical fiber preform. The optical fiber preform-heating furnace ... | 09/13/2005 |
| 6932351 | Packing case for cooling compressors and other machinery A packing case for cooling compressors and other machinery is disclosed. A packing case includes an opening through which a movable machinery shaft may be inserted such that the packing case is mounted on the shaft. In an exemplary embodiment, the packing case conta... | 08/23/2005 |
| 6932349 | Sealing system for gas turbine A system (10) for sealing and pressurization for the support cushion (24) of a gas turbine (20), wherein the gas turbine (20) is provided with a compressor (21), with which there is associated an inner barrel (23), and the s... | 08/23/2005 |
| 6845987 | Shaft seal The present invention relates to a seal assembly for use in a rotary machine. The seal assembly comprises a first member and a seal carrier mounted to the first member by a mounting member, a second member spaced from the first member and a seal running member posit... | 01/25/2005 |
| 6805487 | Holder driving unit A holder driving device has: a holder holding a substrate, a shaft supporting the holder, a driver for driving the shaft reciprocatingly and linearly in the direction along the shaft, a bearing unit having mechanical linear motion bearings for supporting the shaft t... | 10/19/2004 |
| 6789804 | Dry gas shutdown seal A dry gas seal has a housing with an annularly-shaped channel disposed concentric with the drive shaft, and an inlet to introduce pressurized buffer gas into the housing interior. An annularly-shaped shutdown piston is slidably received in the housing channel for ax... | 09/14/2004 |
| 6726215 | Dynamic pressure seal device and rotary joint device using the same Disclosed are a dynamic pressure seal device and a rotary joint device using the same which are applicable to a rotary body to be rotated at high speed and which are capable of effecting delivery of a target fluid between a rotary side member and a stationary side m... | 04/27/2004 |
| 6708981 | Seal assemblies A seal assembly (22) for sealing a pressurized gaseous product includes, a pair of seals (24,26) spaced axially to provide a chamber (28) therebetween, a gas seal (24) being disposed on the inboard side of the seal assembly (22) be... | 03/23/2004 |
| 6607348 | Gas compressor To avoid formation of condensate or freezing in the tandem gas seals (12, 13) of a gas compressor (1), such as for use in the compression of production of natural gas, when the compressor is temporarily stopped for maintenance or repair of the compressor ... | 08/19/2003 |
| 6568688 | Hydraulic seal arrangement, more particularly on a gas turbine This invention relates to a hydraulic seal arrangement between two, more particularly co-rotating shafts of especially a gas turbine engine, where the radially outer shaft when viewed with reference to the shafts' axis of rotation has an annulus extending... | 05/27/2003 |
| 6517079 | Gas seal for continuous thermal treatment facilities operated with a protective gas atmosphere An aerodynamic seal for a continuous heat treatment furnace which contains a protective atmosphere, and through which a metal strip moves in a given direction is disclosed. The seal is adjacent a passage through which the strip moves through a wall of the... | 02/11/2003 |
| 6494460 | Rotary barrier face seal Rotary barrier face seal of the non-contact type seal with helical grooves for a housing and a shaft, comprising means for introduction of an external barrier fluid towards the sealing interface. Said barrier fluid prevents sealed process fluid from enter... | 12/17/2002 |
| 6443618 | Particulate free air bearing and seal A particulate free air bearing and seal is formed between a slide and an air bearing body. Pressurized gas is supplied to an air bearing region between the slide and the air bearing body. The pressurized gas causes the slide to float on the air bearing bo... | 09/03/2002 |
| 6402380 | Fluid bearing operable in a vacuum region A fluid bearing suitable for use in vacuum region comprises a fluid passageway for introducing a fluid into the bearing, a pump-out slot for evacuating the fluid from the bearing, and a bearing seal disposed along a periphery of the bearing to restrict fl... | 06/11/2002 |
| 6352265 | Seal ring using gas curtain A non contact isolation seal assembly for rotary and linear sealing for use in semiconductor manufacturing automation. The noncontact isolation seal assembly employs a seal having an aperture with a shaft extending through the aperture. A gap region is ma... | 03/05/2002 |
| 6323496 | Apparatus for reducing distortion in fluid bearing surfaces A vacuum seal and fluid bearing apparatus for reducing the distortion of the bearing surfaces of a gas bearing is described. The apparatus includes a stator attached around an aperture in a vacuum housing and having a first planar fluid bearing surface. A... | 11/27/2001 |
