Abstract: A device to provide a seal between a housing for a moving element such as a drill chain, piston or the like and the moving element. The device comprising a storage well to retain seal material, the block having an outlet connecting with an aperture in a housing enabling seal material to flow into the space between a housing and the moving element and form a seal, the device further including an inlet port enabling seal material precursor to be added into the block, and pressurising means to pressurise the seal material precursor and force it out of the aperture.

Abstract: A circumferential seal system for sealing a high pressure region from a low pressure region separated by a runner with an outer circumferential surface and a seal ring disposed about the outer circumferential surface is described. The seal system includes a plurality of groove sets separately disposed along the outer circumferential surface. Each groove set further includes at least two grooves. At least one groove within each groove set exerts a lifting force via a fluid from the high pressure region onto the seal ring as the runner translates with respect to the seal ring along an axis substantially perpendicular to the rotation of the runner. The continuous feed of fluid onto the seal ring ensures a thin film between the seal ring and the runner regardless of their relative arrangement during axial excursions of the runner resulting from conditions within a turbine engine.

Abstract: A corner seal assembly for a rotor of a rotary engine, the assembly comprising a pair of corner seal elements, each seal element of the pair being arranged to provide a seal between the rotor and a respective one of a pair of opposed end faces of the rotary engine, the seals being arranged to be resiliently coupled to one another whereby the seals exert substantially the same force on each one of the pair of opposed end faces.

Abstract: A method and a sealing system for sealing the space between a piston and the hub of a torque converter lockup clutch is provided. According to the method and the sealing system, the seal is pretensioned with its cylindrical surface facing the piston bore. In an embodiment of the invention, the first seal is fastened by a second seal. The invention allows minimization of oil leakage flow and at the same time to linearize its dependency on the differential pressure. Spontaneous sealing may be reduced, thereby directly correlating the contact pressure of the piston—and thus the torque of the torque converter lockup clutch—with differential pressure and eventually allowing for smoother travel.

Abstract: A dynamic shaft seal assembly for sealing a rotating or reciprocating shaft includes an elastic seal member having at least a portion thereof in sealing communication with the rotating or reciprocating shaft. A shape memory alloy element is in contact with the elastic seal member, the shape memory alloy element being discontinuously disposed about the elastic seal member, and being configured to i) directly apply a compressive force in a radial direction on the seal member against the rotating or reciprocating shaft, and ii) maintain the compressive force on the seal member as a function of temperature. The seal assembly is adapted to seal at a temperature ranging from about ?55° C. to about 250° C. Methods including the seal assembly are also disclosed.

Abstract: An apparatus includes a first body; a second body that is moveable relative to the first body; a seal arranged between the first and the second body such that a first space is separated from a second space by the first body, the second body and the seal, wherein the seal is located at a distance from the first body; a fluid supply arranged to create a fluid flow between the first body and the seal to create a non-contact seal between the first and the second space so as to enable movement between the first and the second body, and a controller configured to control the distance during movement of the first and the second body relative to each other.

Abstract: A dynamic sealing mechanism for a machine assembly that includes a seal housing of generally cylindrical form having opposed ends, the seal housing axially positioned between a pressure housing and a retaining member and laterally translatable relative to the pressure housing. The dynamic sealing mechanism includes a shaft located at least partially within the seal housing, the shaft having a sealing surface of generally cylindrical form, relatively movable with respect to the seal housing, and having at least one radial bearing positioned radially by the shaft and locating the radial position of the seal housing. At least three fluid pressure-generated forces act axially on the seal housing to produce a net fluid pressure-generated axial force that is negligible.

Abstract: (EN) The invention relates to an installation device (3) for installing a sealing ring (1) on or in a component (2), for example a shaft or a housing, comprising a coupling member (4) for transmitting an installation force (F) to the sealing ring (1). The invention further relates to a sealing ring (1) comprising a rubber elastic base body (11) and a reinforcing ring (12), wherein the reinforcing ring (12) is embedded at least sectionally into the rubber elastic base body (11). The invention further relates to a method for installing a sealing ring (1) on or in a component (2), wherein the sealing ring (1) is inserted onto or into the component (2) in the axial direction.

Abstract: A method for installing an auxiliary ring around a shaft. The method comprises providing an auxiliary ring comprising a plurality of ring elements, wherein each ring element includes at least one radial joint. Each ring element is installed around the shaft and positioned such that the radial joint of at least one of the ring elements is rotationally offset from the radial joint of each adjacent ring element. The plurality of ring elements are then secured to each other by adhesive, welding, or a fastener. Each ring element may include an aperture wherein the aperture of each ring element is aligned with the aperture of each adjacent ring element.

Abstract: An apparatus is provided for sealing a channel fluidly connecting between a high pressure zone and a low pressure zone. The apparatus has at least two brush seal elements provided in the channel in series in a direction from the high pressure zone toward the low pressure zone to define an intermediate zone between the brush seal elements. The intermediate zone is fluidly connected to the low pressure zone through a bypass or passage, allowing a fluid in the intermediate zone to flow in part through the bypass to the low pressure zone.

Abstract: A brush seal and a method for mounting a brush seal is disclosed. The brush seal includes a sealing element provided with a plurality of filaments or wires that are joined at a filament or wire end to form a filament or wire bundle and a clamp-like sealing housing for receiving and fixing the filament or wire end between a first and a second limb and for fixing the brush seal in a mounting recess of a housing. A free end of the filament or wire bundle of the sealing element is clamped between a partial area of an inner contour of the second limb that is adjacent to a region of an outlet opening of the mounting recess of the housing and an area of the outlet opening that is opposite from the partial area.

Abstract: A sealing system for a pump having a plunger includes a housing having an internal chamber adapted to receive a portion of the plunger. Primary and secondary seals are located within the internal chamber and adapted to sealingly engage the plunger. The primary seal communicates with the fluid being pumped. A barrier fluid chamber contains a barrier fluid in contact with the primary seal and the secondary seal. A pressure referencing device has an inlet port in communication with the pumped fluid and an outlet port providing fluid at a pressure magnitude equal to a peak pressure of the pumped fluid. A pressurizing device is in communication with the fluid at the peak pressure and the barrier fluid to maintain the barrier fluid pressure at a magnitude greater than the peak pressure of the pumped fluid such that the pumped fluid is restricted from leaking past the primary seal.

Abstract: The invention relates to a multistage brush seal of a steam turbine, the brush seal comprising several brushes which in turn comprise several bristles. Conventional multistage brush seals have a conservative configuration because a precise prediction regarding the pressure difference of a single stage is not possible. The aim of the invention is therefore to provide a brush seal that allows a more precise prediction in respect of the pressure difference in a single stage or brush and thus provides a more precise dimensioning of the brush seal while achieve possible savings. The invention proposes that the adjacently arranged brushes have a varying configuration in respect of different parameters.

Abstract: A method and apparatus for sealing an opening of a fluid manifold is provided. A grooved sealing member, having compliant members disposed in the grooves, is seated in the opening. A retention member is coupled to the fluid manifold by tensile members such as bolts. One or more compression members fit between the retention member and the sealing member, and a cap fits over the sealing member to secure the one or more compression members. The cap is fastened to the sealing member. When pressure is applied inside the fluid manifold, the force generated thereby is transmitted by the sealing member through the one or more compression members, and the retention member, to the tensile members, which absorb and equalize the force around the sealing member.

Abstract: A sealing assembly (100) for providing a seal between a first element (104) and a second element (106), the first element being movable with respect to the second element, wherein the sealing assembly comprises: a sealing member (102) adjacent to the first and second elements; a first seal portion (108) for providing a first seal between the sealing member and the first element, the first seal portion being arranged in a first direction; and a second seal portion (112) for providing a second seal between the sealing member and the second element, the second seal portion being arranged in a second direction, wherein the first direction is arranged at an angle with respect to the second direction and the sealing member is disposed such that the sealing member is movable relative to the second element in the second direction.

Abstract: The present invention relates to a sealing assembly for use in chromatography columns and methods for forming a seal in such columns. The assembly comprises a sealing element composed of a material having a low coefficient of friction and a separate resilient member co-operating therewith. The seal provided is stable over a temperature range of +2° C. to +30° C.

Abstract: An earth bit includes a cutting cone carried by a lug, and an interstice seal assembly which forms a dynamic seal with a radial interstice lug surface of the lug. The interstice seal assembly includes a rigid sealing ring having lengthened and shortened arm portions. The lengthened arm portion extends outwardly from the shortened arm portion, and engages the radial interstice lug surface.

Abstract: A hydrogen-cooled generator includes a sealing device disposed between a rotor and a stator. The sealing device is configured for at least partially segregating hydrogen atmosphere on one side of the sealing device and a cavity on an opposite side of the sealing device. The sealing device includes a non-contacting seal and a contacting seal including an aluminum body coupled to the non-contacting seal and a plurality of non-metallic bristles projecting from the aluminum body with tips of the bristles engaging the rotor of the generator.

Abstract: Disclosed herein is a downhole disconnectable and length compensatable tubular sealing system. The system includes, a seal connector having a first metal seal receptive of a separate seal nipple and pressure sealably engagable therewith and at least one expansion joint sealingly connected to the seal connector. The expansion joint includes, a section of metal tubing having a sealing surface thereon and a metal-to-metal seal slidably sealingly engaged with the sealing surface.

Abstract: Arrangement for cooling a compressor comprising a housing (Ia, Ib) with an inlet (13) and an outlet (14) and enclosing in its volume (12) a stator including stator winding (2) and stator iron (3) of an electric motor, which drives a rotor (9) with a shaft (6). The invention is characterized in that the volume (12) is arranged separated from the rotating parts (9, 6) in a sealed manner.

Abstract: A seal system having a rotating seal section and a static seal section operable for working together to restrict fluid flow there between. An arm connected to the static seal is tuned to move the static seal asymmetrically to correspond with asymmetric movement of the rotating seal during operation to maintain a desired relative position between the static and rotating seals.

Abstract: An energized composite metal to metal seal. A sealing device includes a metal seal with a metal sealing surface facing radially outward, and another metal sealing surface facing radially inward; and a nonmetal seal including a nonmetal sealing surface positioned proximate one metal sealing surface and facing radially outward, and another nonmetal sealing surface positioned proximate the other metal sealing surface and facing radially inward. A method of sealing between a housing assembly and a closure member includes applying a pressure differential across the sealing device while the sealing device seals between the housing assembly and the closure member, and the pressure differential increasing contact pressure in a metal to metal seal between the housing assembly and a metal sealing surface on the metal seal, and increasing contact pressure in a metal to metal seal between the closure member and another metal sealing surface on the metal seal.

Abstract: An expanded graphite is derived from a graphitic or partially graphitic starting material selected from the group consisting of natural graphite, compressed expanded graphite, partially oxidized graphite and/or graphite fibers having a BET surface area of >30 m2/g. The expanded graphite is obtained by reaction of the starting material with substances capable of intercalation or mixtures of substances capable of intercalation to give a compound designated as an intercalation compound and subsequent expansion in plasma.

Abstract: A method and a device for the supply of at least one substance (12; 27) into the interspace (3; 22)between mutually moving, coaxial structural elements (1, 1? and 2; 20;20? and 21), wherein the substance (12; 27) is introduced under pressure into the interspace (3), and wherein excess volume of substance (12; 27) that is introduced is caused to exit the interspace (3; 22). The interspace (3; 22) is closed off at at least one axial end thereof by means of at least one annular, spring-loaded seal (9; 16; 23; 24; 37; 38) which is secured in a retaining part (7; 31; 32) associated with one of the structural elements (1, 1?; 20, 20?)and has a contact face against the other structural element (2; 21), wherein the substance (12; 27), at a corresponding pressure and simultaneously with the supply into the interspace (3; 22), is also separately supplied to a pressure- applying face of the seal (9; 16; 23; 24; 37; 38).

Abstract: Disclosed herein is a housing wheel engine that has one wheel shaped combustion housing, the housing wheel engine can hold several pistons which's both sides working inside the combustion housing. The housing wheel engine transmits its rotating movement directly to the driveshaft by planetary gearsets. A four strokes time mechanism provided by planetary gearsets.

Abstract: A coil spring assembly for connection with a separator body to apply a spring force to a grinding roll of a journal assembly to pulverize solid fuel. The coil spring assembly includes: a preload stud having a first end in communication with the journal assembly and an exposed opposite second end extending from the coil spring assembly; a spring adjustment bolt and bearing assembly being fixed relative to the preload stud extending therethrough; and a seal being substantially cylindrical shaped and flexible at least along a central axis thereof.

Abstract: A shaft seal reduces leakage between a rotating shaft and a stator. The shaft seal includes a plurality of plate members attached to the stator in facing relation. The plate members define a sealing ring between the stator shell and the rotating shaft. A thickness of the plate members tapers from thick to thin from a stator end to a rotating shaft end. In this manner, with the more tightly packed tips of the plate members, axial leakage is reduced by tapering the plate members so that the plate roots are thicker than the plate tips.

Abstract: A seal assembly that is usable with a well includes a metal body that is adapted to expand radially inwardly and radially outwardly in response to the body being longitudinally compressed between compressing surfaces. The metal body includes first and second surfaces that do not conform to the compressing surfaces before longitudinal compression of the body and are adapted to contact the compressing surfaces.

Abstract: An improved gasketed mounting cup for an aerosol container wherein the mounting cup has a curvilinear channel portion and the gasket is a folded-over sleeve gasket, simulating the gasket thickness of a cut gasket; wherein the outer segment of the folded-over gasket is longer than the other gasket segment but of a limited length that will allow the ultimate positioning of the gasket without the longer gasket segment contacting the surface of the mounting cup and being wedged between the bead of the container and the mounting cup during advancement of the gasket into the mounting cup.

Abstract: A high pressure sensor is provided with a single-piece pressure port machined from stainless steel and has no internal gaskets or seals. A housing surrounds the pressure port along a portion of its axial length. The housing and pressure port have mating configurations that prevent axial rotation when the pressure port is inserted into the assembled position in the housing. A retaining ring locks the pressure port axially with respect to the housing and is fixed in place by a fixative, such as epoxy.

Abstract: An air press for pressing a fiber web includes a plurality of rolls and a pair of end seal arrangements. Of the plurality of rolls, each pair of adjacent rolls forms a nip therebetween. Further, each roll has a pair of roll ends, the plurality of rolls together forming two sets of roll ends. Each end seal arrangement coacts with one set of roll ends, the plurality of rolls and the pair of end seal arrangements together defining an air press chamber having an air chamber pressure. Each end seal arrangement is composed of at least one roll seal, including a first roll seal, and an adjustable bias mechanism. Each roll seal forms a seal with at least one roll end, and one side of the first roll seal being exposed to the air chamber pressure. The adjustable bias mechanism is configured for controlling a position of each roll seal relative to a respective at least one roll end and for adjusting a seal force between the roll seal and the respective at least one roll end.

Abstract: The invention concerns a support (30) storing, transporting and using devices (10) for applying a sealing compound onto an element projecting on a surface. The invention is characterised in that it comprises a plurality of said devices borne by a substantially planar base plate (32) and wherefrom the latter can be detached, and each device includes a cap (11) designed to cover entirely said element and containing a predetermined amount of sealing compound in frozen state. The invention is useful for producing impermeability to fluids at rigid connecting elements such as rivets, bolts or the like, for protecting projecting elements of structures against electromagnetic effects such as lightning.

Abstract: Methods and devices are provided for mechanically sealing the reservoirs of microchip devices to prevent leakage from or between any of the reservoirs. In one embodiment, the method includes sandwiching a microchip device and a gasket material covering the reservoir openings between a front sealing frame and a backplate, such that the gasket material is compressed against the back side of the microchip device by the back plate. The front sealing frame is secured to the back sealing plate using fasteners or welding. The gasket material is preferably a flexible polymeric sheet, which is biocompatible and compatible with the reservoir contents. In another embodiment, a composite backplate is used in place of the back sealing plate and separate gasket material. The composite backplate can include a substrate having sealing plugs defined thereon. The composite backplate also can be designed to hold the drug, thereby combining the assembly steps of reservoir filling and sealing.

Abstract: A method and device for a fit to size assembly of components or machine parts is provided in which fixed or relatively moving machine parts are sealed against inlet and outlet of a fluid material. A sealing member used for this sealing cannot be put in a position during the assembly, which is required for a fit-to-size assembly. The assembly includes an elastic sealing member inserted into an annular groove that is made in one of the machine parts being sealed relative to another part. The groove communicates with a sealing seat and an overpressure is built up in a space in the groove which is sealed by the sealing member through a passage open to the outside. The overpressure causes the sealing member to move to the sealing seat.

Abstract: A sealing device and process for laterally sealing at least one overpressure zone or underpressure zone adjacent to an actuating surface in a paper-making machine. The sealing device has at least one sealing element arranged movably at least locally in an intake area of a support. The sealing element is loaded with a sealing or opposing force in order to place it against the actuating surface. A stopping element is fixed at a distance from the actuating surface which limits the seating motion of the sealing element.

Abstract: Sealing device for laterally sealing of at least one overpressure zone and vacuum zone in a paper machine and process for sealing a moving surface with the sealing device. The sealing device includes a moving surface adjacent to the at least one overpressure zone and vacuum zone, at least one sealing element positioned opposite the moving surface, a holder in which the sealing element is mounted for movement relative to the moving surface, at least one loading element arranged to load the sealing element in a direction toward the moving surface, and at least one reset element arranged to act against the at least one loading element and to move the sealing element away from the moving surface. A sealing gap formed during operation between the sealing element and the moving surface is set by at least one of the reset element and the loading element.

Abstract: There is provided a rotating anode X-ray tube capable of efficiently discharging intense heat generated when X-rays are generated and achieving a high output power, a long-time continuous operation and a long operating life of the bearings. A rotating anode X-ray tube is provided with a target, a rotor, a shaft, rolling bearings and a bearing housing for supporting the rolling bearings. An accommodating, section for accommodating Ga or Ga alloy is defined by a center portion of the shaft and an inner surface of the bearing housing between the rolling bearings. Pumping grooves and labyrinth grooves are provided axially outwardly of the accommodating section for preventing the Ga or Ga alloy from leaking.

Abstract: A sealing construction for loading a seal against a suction roll in a paper machine includes a seal having a wear surface, side surfaces and a lower surface. The seal is fitted from its holder to the structure of a suction box which is inside the suction roll. The seal essentially covers the whole operating length of the suction roll, extending from its wear surface to the inner face of the mantle of the suction roll. The seal is moveable in the direction of the radius of the suction roll in the holder by a pressure effect that is applied directly onto the lower surface of the seal. Negative pressure or vacuum can be applied during operation to draw the seal into its holder to reduce seal wear.

Abstract: A mounting system for removably mounting a sensor array adjacent the wire of a papermaking machine. The mounting system comprises an elongate base member formed with a tongue or groove with a corresponding interlocking groove or tongue formed on the sensor array adapted to be slidably received and retained by the elongate base member. The tongue and groove are dimensioned to permit relative movement of the sensor array with respect to the base member. An inflatable bladder is housed between the elongate base member and the sensor array and the bladder is adapted to be inflated to move the tongue and groove into a locked position to fix the position of the sensor array with respect to the elongate base member. This arrangement allows for easy and efficient removal of the sensor array when the bladder is unpressurized while providing reliable clamping when the bladder is inflated.

Abstract: 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 side of the gap passage. In one arrangement, a ring-shaped seal device includes a seal body (82) of largely U-shaped cross-section, with a base (84) and a pair of legs (86, 88) extending from opposite sides of the base, with the base and at least one leg sealing against walls of the cavity that holds the seal. A hose (90) lies between the two legs and against the base of the seal body, and pressured fluid of greater than chamber fluid pressure is applied to the hose to expand it and thereby push apart the legs of the seal body.

Abstract: A seal member to be fitted on a shaft portion of a rotor is engaged with the front end of a center piece to be fixed on the front end of an automatic machine such as a robot or the like. A slide portion is moved so that the seal member is fixed by a chuck claw. While compressed air is jetted from an air passage of the center piece, the seal member is fitted on the shaft portion. The air passage consists of cylindrical holes and can be easily formed by a hole-forming machine or lathe.

Abstract: A seal construction for a suction roll in a paper machine including a substantially U-section holder open toward an inner face of the roll mantle and a seal mounted in the holder and extending in the axial direction of the roll. The seal includes a frame part arranged within the holder and a wear part fixed to the frame part and placed against the inner face of the roll mantle. The seal construction also includes a loading hose for shifting the seal in the holder against the inner face of the roll mantle. In the interior of the frame part of the seal, an inner loading member is arranged to lock the frame part of the seal in contact with the holder so as to position the wear part of the seal in the desired position in relation to the inner face of the roll mantle.

Abstract: A dynamic oil control mechanism for a press including a vacuum inducing ejector or jet-pump to vacuum oil leaking from about an oil seal. The oil seal is located around the drive piston on the press slide to prevent oil migration from the press crown to the die area or slide of the press. A drain port is located about the housing in which the drive piston reciprocates. The ejector maintains a low pressure area within the drain port to pull oil leaking from the seal into the drain port and away from the drive piston. The vacuumed oil is then transferred to an oil reservoir.