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| Number | Title | Issue Date |
| 7793941 | Ring seal with inner lip A device for sealing between a first component and a second component is disclosed. The first component has a groove and the groove has a first wall and a second wall. The annular body includes a first side configured to selectively contact the first wall of the gro... | 09/14/2010 |
| 7432620 | Seal assembly for a hydrogen-cooled electric power generator with interface impervious to location of plant piping A seal assembly is provided to prevent leakage of cooling fluid from a generator housing. A bracket 26 includes an inlet connectable to power plant piping for receiving a supply of sealing fluid. The inlet is in communication with a bracket passageway 32 | 10/07/2008 |
| 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 |
| 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 |
| 7370864 | Balanced mechanical seal assembly A mechanical seal for providing a fluid-tight seal between a rotating shaft and a stationary housing comprises a first pair of seal members for sealing and separating a process fluid from a barrier fluid and a shuttle. The first pair of seal members comprises a firs... | 05/13/2008 |
| 7320468 | Sealing arrangement A sealing arrangement for sealing a leakage gap between relatively moveable parts in a flow path between a region of high fluid pressure and a region of low fluid pressure comprises a sealing member having an upstream surface, a downstream surface, a radially outer ... | 01/22/2008 |
| 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 |
| 7140616 | Sealing device The invention relates to a sealing device which is provided with an annular circumferential groove in a preceding sealing washer and having a sealing body disposed in the groove. The width and depth of the groove are larger than the cross-section of the sealing body... | 11/28/2006 |
| 7055826 | Seal and bearing assembly A seal and bearing assembly for use in rotating machinery of the type having a rotor which turns within a stationary housing. The rotor and housing define a seal cavity therein in which the seal and bearing assembly is positioned. The assembly comprises a first bear... | 06/06/2006 |
| 7024982 | Combination of piston and piston ring A combination of piston and piston ring includes a piston having a piston ring groove in which at least the groove portion of the piston is made of steel, a piston ring made of cast iron and fitted into the piston ring groove, and a hard coat film formed to at least... | 04/11/2006 |
| 6959929 | Seal for a compressor and centrifugal compressor equipped with such a seal A seal for a rotary compressor comprises a casing, at least one assembly having a rotating seal face ring which rotates as one with a sleeve intended to be mounted on a shaft of the compressor and of a stationary seal face ring mounted on the casing, the seal face r... | 11/01/2005 |
| 6871562 | Power steering system for motor vehicles For a power steering system which has, as a recirculating ball steering, a worm shaft and, enclosing this, a working plunger which is to be actuated by a bead chain axially shiftably with respect to the worm shaft, an axial seal is provided for the annular gap betwe... | 03/29/2005 |
| 6588763 | Seal arrangement providing a seal between a bore and a rod moveable in the bore A seal arrangement provides a seal between a bore and a rod movable in the bore with a gap formed between the bore and the rod. The seal arrangement includes a floating elastomeric sealing ring which is accommodated in a circumferential groove around the ... | 07/08/2003 |
| 6505837 | Compliant foil seal A compliant foil seal comprising at least one smooth resilient foil for facing a rotor and at least one bump foil for providing film riding stiffness and controlled deformation of the smooth resilient foil for providing an effective seal which is capable ... | 01/14/2003 |
| 6467774 | Axially pressure balanced floating seal system A pressure balanced floating seal system positioned within a structure about a rotating shaft. The floating seal system has a cylindrical outer seal housing having a cylindrical internal recessed region formed in the outer seal housing with a retaining fl... | 10/22/2002 |
| 6422570 | Lip type seal A lip type seal is provided with an outer ring part (31) which is tightly fitted to a seal installation part (12) of a housing (1); a seal main body (32) which is fixed to the outer ring part (31) and whose inner circumferential part extending in a bent s... | 07/23/2002 |
| 6338491 | Rotary shaft seal An improved rotary shaft seal assembly is disclosed herein. The seal assembly is disclosed in combination with an example of transmission components with which it may be used. The assembly provides a rotary seal for fluid flow between a stationary cylinde... | 01/15/2002 |
| 6161834 | Pressure energized seal A seal is provided for an offshore fluid swivel to seal a gap passage (34) leading from a transfer chamber (20) to the environment, which uses pressured fluid to apply a variable pressure that pushes the seal tightly against a sealed surface (52) on one s... | 12/19/2000 |
| 6098753 | System for delivering pressurized lubricant fluids to an interior of a rotating hollow shaft A system for delivering a pressurized lubricant fluid from a stationary source to an interior of a drive shaft of a gas turbine engine which rotates at high speed and operates at high temperatures, includes a pair of axially spaced-apart seals that surrou... | 08/08/2000 |
| 6070881 | Configuration for sealing a leadthrough gap between a wall and a shaft A configuration seals a leadthrough gap between a wall and a shaft which is passed through the wall and can be set in rotation relative to the wall. The configuration has a sealing ring through which the shaft can be passed as well as a holder that can be... | 06/06/2000 |
| 5829339 | Crimped sealed adapter bushing assembly for a double diaphragm spring brake actuator A sealed bushing assembly adapted to permit a push rod to pass through an adapter isolating a pressurized chamber, formed by attaching a sleeve to said adapter, inserting a bushing, and crimping the end of said sleeve opposite said adapter to restrain sai... | 11/03/1998 |
| 5344162 | Sealing ring for gas turbine engines A sealing ring for controlling gas leakage through the annular space between two rotating concentric members; for example engine shafts. The sealing ring 20 has a generally trapezoidal cross section and an overlapping scarf joint. The sealing ring improve... | 09/06/1994 |
| 5195754 | Laterally translating seal carrier for a drilling mud motor sealed bearing assembly A sealing and lubrication assembly for rotating shafts intended for operation in an abrasive environment and wherein the rotary shaft may have lateral translation or excursion during its rotation. A housing receives the rotary shaft in bearing supporting ... | 03/23/1993 |
| 5088745 | Seals and seal assemblies Buffer seal rings are described, and gland seals using them. The ring seats in an axially oversize housing groove in the gland bore in order to protect a main rod seal from pressure shocks. To avoid the possibly damaging effects of pressure trapping betwe... | 02/18/1992 |
| 4982889 | Floating dual direction seal assembly A seal assembly comprising a ring having radial and axial seals thereon positionable between mating parts for sealing flow of fluid from high to low pressure regions between the mating parts.... | 01/08/1991 |
| 4919439 | Balanced ring seal A ring seal comprises an annular seal segment that is fixed against rotation but is axially movable relative to a fixed seal segment. The axially movable seal segment has substantially equal oppositely facing exposed radial surfaces whereby fluid pressure... | 04/24/1990 |
| 4875691 | Radial seal A radial seal for use in connection with a cylindrical rotatable member passing through a stationary member which includes a circular floating shoe mounted to the stationary member and surrounding the rotatable member in order to accommodate axial, latera... | 10/24/1989 |
| 4768627 | Frictionless hydraulic damper and damper-snubber A frictionless hydraulic damper including a cylinder having end walls mounting the opposite ends of a shaft in bushings with a clearance, bellows seals between each end wall and the portions of the shaft extending beyond each end wall, a piston head on th... | 09/06/1988 |
| 4637032 | Rotary seal for movable shaft to eliminate breakaway friction In apparatus of the type having a shaft which moves axially or is rotated, a rotary seal on the shaft for eliminating the breakaway friction between the shaft and its mount. The seal includes an inner sleeve surrounding the shaft and rotatable thereon, th... | 01/13/1987 |
| 4633907 | Valve assemblies In a sealing arrangement for a rotary fluid pressure control valve, such as a power steering control valve, a resilient sealing ring is located in a ring groove for sealing engagement with an outer cylindrical member. Frictional losses and a tendency for ... | 01/06/1987 |
| 4484753 | Rotary shaft seal The present invention is directed to a rotary shaft seal assembly and, more particularly, to an assembly including a continuous, annular, but axially variable seal for providing hydrodynamic lubrication between the seal and rotating shaft. The seal assemb... | 11/27/1984 |
| 4306726 | Furnace electrode seal assembly An electric furnace electrode seal assembly includes a seal ring mounted on the furnace adjacent the electrode opening. The seal ring is stationary and supports a telescoping arrangement of a plurality of cylindrical water cooled sealing glands that exten... | 12/22/1981 |
| 4209175 | Articulated seal for rotating cylinder such as kiln or the like A seal for use in sealing an annular opening between a stationary member and a rotating cylinder telescopically arranged in the stationary member, the seal comprising an annular ring member circumscribing the cylinder adjacent the stationary member and cl... | 06/24/1980 |
| 4068854 | Dust seal for rotatable shaft passing through a bin wall A dust seal between a rotatable shaft and a passageway through a bin wall. A split sleeve surrounds the shaft and each section thereof carries a laterally extending plate section. Adjacent edges of the plate sections abut and are secured to each other to ... | 01/17/1978 |
| 4031716 | Automatic sequential dual action sealing system A shock absorbing subassembly with a body, a mandrel slidably and non-rotatively received in the body, dampening means therebetween, an upper seal above the dampening means and a floating seal therebelow for maintaining an oil bath between the body and th... | 06/28/1977 |
