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| Number | Title | Issue Date |
| 7128522 | Leakage control in a gas turbine engine A gas turbine engine expansion joint comprises first and second members having confronting faces defining a gap therebetween. At room temperature, the gap varies in accordance with the temperature distribution profile of the first and second members during normal en... | 10/31/2006 |
| 6837482 | Sealing arrangement for thermally enhanced sealing A sealing arrangement and method are disclosed for enhancing a seal in response to conditions of changing temperature. An annular seal is disposed in an annular sealing cavity, with the seal and the cavity having different changes in dimensions in response to a temp... | 01/04/2005 |
| 6708979 | Orifice sealing physical barrier The present invention is a physical barrier for an orifice in a panel member which includes a plastic carrier and a patch adapted to adhere to said carrier and the panel member. The present invention also includes a method of sealing an orifice in a metal panel memb... | 03/23/2004 |
| 6648333 | Method of forming and installing a seal In a gas turbine including a nozzle retaining ring having a first annular axially facing sealing surface and a shroud segment having an axial registering second surface. To minimize or prevent leakage flow between the retaining ring and shroud segments, a... | 11/18/2003 |
| 6471409 | Vehicle bearing device A bearing device includes a pair of bearings. One of the bearings is exposed to a higher temperature condition than the other. Each of the bearings has an outer ring, an inner ring, a plurality of rolling members disposed in a space between the outer ring... | 10/29/2002 |
| 6234488 | Heat shrinkable boot seal and method of installation An apparatus (10) includes a bearing (24) linking first and second vehicle parts (12, 14) for movement relative to each other, and a boot seal (30) protecting the bearing (24). The boot seal (30) is a tube of heat shrinkable thermoplastic material. The tu... | 05/22/2001 |
| 6202668 | Valve with fire-resistant seal A valve with fire-resistant seal for use in industrial piping applications. The valve includes a valve body with a valve element therein. The valve is illustrated as a ball valve, but other valve configurations could also be used. A valve stem engages the... | 03/20/2001 |
| 6189895 | Metal gasket with sealing and connecting sections A metal gasket is used for an internal combustion engine, preferably as a manifold gasket. The gasket is formed of a plurality of metal gasket sections, and at least one metal connecting section situated between two gasket sections adjacent to each other ... | 02/20/2001 |
| 6186506 | Method for sealing two members and gasket therefor A gasket is formed of a gasket body having at least one hole to be sealed, and a sealing space situated around at least a part of the hole. A heat foamable coating is disposed only in the sealing space. The gasket is installed between two members, and the... | 02/13/2001 |
| 6142731 | Low thermal expansion seal ring support Today, the trend is to increase the temperature of operation of gas turbine engines. To cool the components with compressor discharge air, robs air which could otherwise be used for combustion and creates a less efficient gas turbine engine. The present l... | 11/07/2000 |
| 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 |
| 6065754 | Uniform clearance, temperature responsive, variable packing ring A variable clearance packing ring includes a plurality of circumferentially extending segments disposed in a generally dovetail-shaped slot in the stationary component of a machine having a rotor rotatable about an axis, the packing ring including an arcu... | 05/23/2000 |
| 5876042 | Pipe seal with a sheet-metal casing bendable around a pipe A device for sealing the gap or void between the outer circumference of a pipe and a hole in a wall the pipe passes through includes a sheet metal casing flexible enough to be bent around the pipe. The inside wall of the casing includes spaced apart inner... | 03/02/1999 |
| 5568929 | Temperature compensations seal A temperature-responsive actuator for a sealing assembly comprises first and second annular members each having a camming surface for engagement with one another, the first and second annular members being positioned against each other so that they are ne... | 10/29/1996 |
| 5476268 | Seal assembly with a hard seal layer actuated through a silicone layer A seal assembly includes a body portion of an element to be sealed, a groove formed into the surface of the body portion, a seal member of a relatively hard material for sealing a gap formed between the surface of the body portion and another element to b... | 12/19/1995 |
| 5443589 | Steam turbine bell seals An improved bell seal arrangement for steam turbines is provided that allows the bell to expand thermally without damage to the opposing seal surface of the inner shell by the addition of components that allow yielding of the seal surface without causing ... | 08/22/1995 |
| 5368312 | Arrangement for the sealing-off of metallic cylindrical bodies A sealing arrangement for the sealing-off of metallic cylindrical bodies is disclosed, particularly for shafts in cryogenic valves which are surrounded by an essentially ring-shaped sealing device which cannot be glued to metal. The sealing device is surr... | 11/29/1994 |
| 5332460 | Method of manufacturing a seal ring for magnetic fluid seal device A seal ring for magnetic fluid seal device, comprising an annular magnet covered with heat activated resin and an annular pole piece stacked and pressed and bonded coaxially with said annular magnet at a temperature higher than heat activated temperature.... | 07/26/1994 |
| 5330200 | Gasket assembly for sealed joints experiencing thermally induced movement The use of gasket assemblies to compensate for thermally induced gasket movement between a cylinder head and an exhaust manifold of an internal combustion engine is becoming more important in increasing the life of the engine components. The ability to co... | 07/19/1994 |
| 5294133 | Fluid-filled O-ring for maintaining a seal under low temperature conditions An O-ring seal for sealing two concentric members is disclosed. A hollow ring made from an elastomeric material is provided with a central liquid core. Temperature changes which normally result in a contraction in the elastomer material are compensated by... | 03/15/1994 |
| 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 |
| 5251912 | Radially energized seal This invention relates to an adjustable packing for sealing a gap between two surfaces. The packing includes a packing member for sealing the gap, the sealing pressure thereof being adjusted by means of the elastomer, preferably two-component silicone, se... | 10/12/1993 |
| 5217232 | Thermally regulated segmented seal A segmented seal for a rotating member such as a shaft of a gas turbine engine. The seal includes a housing disposed about the shaft which housing receives a seal member formed from a suitable material such as carbon or ceramic having a bore receiving a s... | 06/08/1993 |
| 5207560 | Fluid flow machine with variable clearances between the casing and a fluid flow guiding insert in the casing A multi-stage centrifugal pump wherein a casing surrounds an impeller and a fluid flow guiding insert in each pump stage. The casing is made of a ferritic material, and the inserts are made of an austenitic material. The casing defines with each insert a ... | 05/04/1993 |
| 5186277 | Generator sealing oil temperature control method and apparatus utilizing temperature matching A system for providing seal oils to a gland seal that surrounds the shaft of a generator with the temperature differences between the oils minimized, as well maintained at a temperature which is greater than that for a bearing lubrication oil supply syste... | 02/16/1993 |
| 5171024 | Reactor coolant pump shaft seal utilizing shape memory metal A shutdown seal is provided in a pump for activation to prevent passage of fluid along a shaft relative to a fluid-containing housing of the pump through which the shaft extends. The shutdown seal is an annular member having a mounting flange and a sealin... | 12/15/1992 |
| 5147015 | Seal oil temperature control method and apparatus A system for providing seal oils to a gland seal that surrounds the shaft of a generator with the temperature differences between the oils minimized. The temperature of one of the seal oils is utilized as a reference for controlling the oil temperature of... | 09/15/1992 |
| 5054793 | Resilient gasket with spacers A gasket (10) seals an interface between a pair of parts (12, 14) mounted to each other in torqued engagement and having facing surfaces (20, 22) thermally expanding towards each other upon heating, and contracting away from each other upon cooling. The g... | 10/08/1991 |
| 5044602 | Blowout preventer A blowout preventer for use on wells and especially adapted to use on a pumping well during a steam flood operation including an upper housing having oppositely disposed rams for extension and retraction between the sealing and non-sealing with a longitud... | 09/03/1991 |
| 5040803 | Cavity sealing arrangement and method A vehicle body pillar has a cavity therein through which air flow creating undesirable noise and in which moisture and fluids such as water are not to be collected. An expandable sealant plug is inserted therein and retained in place. The sealant material... | 08/20/1991 |
| 5037115 | Piston ring assemblies for high temperature seals In a turbine inclusive of: a turbine shaft having a longitudinal axis, a steam pipe, a shell circumadjacent the pipe, the pipe and shell being shiftable in vertical and transverse and axial directions relative to the longitudinal axis of the shaft, and a ... | 08/06/1991 |
| 5022662 | Gasket with a fluid hole regulation device A gasket of the invention is installed in an internal combustion engine with at least one fluid hole. The gasket comprises a main body adapted to be installed in the engine and having at least one first hole communicating with the fluid hole of the engine... | 06/11/1991 |
| 5000464 | Gasket with a fluid hole regulation device A gasket of the invention is installed in an internal combustion engine with at least one fluid hole. The gasket comprises a main body adapted to be installed in the engine and having at least one first hole communicating with the fluid hole of the engine... | 03/19/1991 |
| 4957212 | Non-circular piston rings A piston ring whose contour deviates from the circular shape, and in particular an elliptical or oval piston ring, which, when seen in the circumferential direction, has regions that, in the installed state as well as in the operating mode, exert less rad... | 09/18/1990 |
| 4913472 | Sealed joint for a rocket employing fused inorganic vitreous material A design for sealing metal-to-metal, of sections of rocket shell with fusible vitreous inorganic "glass-ceramic" compositions, which will not burn-out from high temperatures of rocket-exhaust, is disclosed. The design is intended to set up a thermal-gradi... | 04/03/1990 |
| 4865331 | Differential temperature seal A simple, yet fluid tight seal for a cryogenic enclosure. The seal between two portions of the enclosure becomes tighter as the temperature is lowered because both portions contract against a third member which does not contract with temperature to the sa... | 09/12/1989 |
| 4813342 | Cryogenic pump multi-part piston with thermal expansivity compensated polytetrafluoroethylene seal rings A reciprocating pump for a cryogenic fluid includes a pump cylinder made of a material with low thermal expansivity, a piston displaceable in the pump cylinder, and self-lubricating piston rings made of polytetrafluorethylene held on the circumferential s... | 03/21/1989 |
| 4795166 | Sealing gasket A high-temperature resistant sealing gasket, adapted to be clamped between flanged pipe ends for service in a static environment, comprises a flat mica mat including, in a superposed relationship, a great number of mica scales, each formed of a plurality ... | 01/03/1989 |
| 4789165 | Pressure compensating seal A seal for use between the edge of a housing opening and a cover attached to the opening has an outer gasket portion that substantially blocks the seam between the cover and the housing opening and edge, and an inner expandable and contractible portion th... | 12/06/1988 |
