Abstract: A seal assembly for a gas turbine engine, including: a first finger seal assembly, the first finger seal assembly including two layers each being secured to each other, the two layers each having a plurality of slots that are offset from each other when the two layers of the first finger seal assembly are secured to each other; a second finger seal assembly, the second finger seal assembly including two layers each secured to each other, the two layers each having a plurality of slots that are offset from each other when the two layers of the second finger seal assembly are secured to each other; and an arc-shaped segment finger seal assembly located between the first finger seal assembly and the second finger seal assembly, the arc-shaped finger seal assembly including two layers each secured to each other, the two layers each having a plurality of slots that are offset from each other when the two layers of the arc-shaped finger seal assembly are secured to each other.

Abstract: A centering cone for positioning a fastening element in a receptacle of a clamping device. The centering cone has an internally located cone section with a cone-shaped inner surface to which a one-piece spring section is connected in a radial direction. The spring section is configured to deform slightly under a radially applied force to provide a certain tolerance for receiving the fastening element.

Abstract: A seal comprising an annular jacket comprising a body defining an annular recess; a helical spring disposed within the annular recess; and a support member disposed within the helical spring to provide a biasing force against the helical spring in the operational state.

Abstract: A sealing apparatus 1 is provided with a reinforcing ring 10 that is a member that is annular around an axis x, an elastic-body portion 20 that is formed from an elastic body that is annular around the axis x, an annular garter spring 30, and a lip-pressing ring 40 that is an annular member. The lip-pressing ring 40 is configured so that a seal lip 21 can be inserted into a space on an inner-periphery side thereof, and a value of an inner diameter thereof is configured to be a size no less than a value of an outer diameter of an annular portion that is at least a portion on an outer-periphery side of the seal lip 21. The sealing apparatus can suppress a decrease in tracking a rotary shaft.

Abstract: Disclosed is a method of making a seal comprising fabricating a seal body that includes a first friction surface including nickel and cobalt. The first friction surface on the seal body is contacted with a metal counter-body surface including nickel. Pressure and heat is applied between the seal body and the counter-body, and motion is applied between the seal body and the counter-body with respect to each other in a direction parallel to the first friction surface, followed by separating the seal from the counter-body.

Abstract: Flexible seal assemblies having a relatively low torsional rigidity and high longitudinal flexure to thereby allow the flexible seal assembly to flex between adjacent components and maintain a seal, even when movement between adjacent components occurs, is described. In some embodiments, the flexible seal assembly includes one or more layers of metal matrix material, the metal matrix material being comprised of a plurality of short segments of thin wire arranged randomly and sintered together to form a semi-rigid sheet. The one or more layers of metal matrix material can be sandwiched between an upper casing and a lower casing of a metal alloy casing. In various embodiments, additional features are provided for helping to make sure the seal assembly stays together, such as spot welds formed through the seal assembly, an S-shaped casing, and a recess/protrusion feature provided on adjacent layers of metal matrix material.

Abstract: A blade seal for covering an interface between first and second components of an aircraft includes a mounting portion extending in a longitudinal first direction for connection to the first component. A contact portion maintains contact with the second component. A plurality of pockets positioned along the first direction are separated by projections extending in a second direction perpendicular to the length. Each pocket has a variable depth and facing the second component.

Abstract: A brush seal system, for application as an air/oil seal in a turbomachine shaft bearing, of axis of rotation, with the seal including a layer of carbon bristles, held between a first ring disposed upstream of a flow of air that passes through the seal, and a second ring disposed downstream of the flow of air, with a surface of the layer of bristles, which is turned towards the first ring, including a non-metal flexible element that makes it possible to stop a portion of flow of air that flows through the seal in a direction substantially parallel to the axis of rotation.

Abstract: A rolling-element bearing unit for a wheel bearing assembly of a vehicle includes a rolling-element bearing with an outer ring, a an inner ring, a bearing interior between the outer ring and the inner ring and a plurality of rolling elements in the bearing interior. The inner ring has an inner ring surface facing the bearing interior and a first and a second axial end surface. A first seal assembly includes a retainer fixed on the bearing outer ring and a seal element configured to slidingly seal against the bearing inner ring surface or against a slip sleeve carried by the bearing inner ring. The retainer is an angle bracket having an axially extending annular leg and a radially inwardly extending annular flange, and radially inwardly extending flange projects radially inwardly beyond the bearing inner ring surface, for example, over a step in the first axial end surface.

Abstract: The embodiments described herein provide a cloth seal for use with turbine components. The cloth seal includes first and second cloth layers. One or more central shims are positioned between the first and second cloth layers so as to block a leakage flow path. Another shim is positioned on and seals the opposite side of the first cloth layer from the one or more central shims positioned between the first and second cloth layers so as to block another leakage flow path. Yet another sealing shim may be positioned on the opposite side of the second cloth layer from the one or more central shims positioned between the first and second cloth layers to as to seal the opposite side of the second cloth layer and block another leakage flow path.

Abstract: A sealing device suppresses deterioration of sealing properties due to plastic deformation (settling) of an outer circumferential lip, including a packing (10) having an outer circumferential lip (12) provided on a sealed fluid side and an inner circumferential lip (13) on an inner circumferential side, and a metal spring member (20) mounted in a mounting groove (11) and having an outer circumferential pressing portion (21) that extends radially outward and toward the sealed fluid side from a groove bottom of the mounting groove (11) and presses the outer circumferential lip (12) radially outward, and an inner circumferential pressing portion (22) that extends radially inward and toward the sealed fluid side from the groove bottom of the mounting groove (11) and presses the inner circumferential lip (13) radially inward.

Abstract: A seal failure prediction system consisting of a seal component and a member conveniently placed; such member, which may be in the form of a strip, a set of wires, or a single wire, generating a characteristic electrical or audible signal when the seal component wears a certain amount.

Abstract: The sealing apparatus and method of assembling the same is disclosed. The sealing apparatus may comprise a resilient member and a sealing member. The resilient member may define a cavity having a closed end and an open end. The resilient member may include a first wall having a first inner sealing surface and a second wall having a second inner sealing surface. The first and second walls may be joined at the closed end. The sealing member may be disposed at least partially in the cavity in sealing engagement with the first and second inner sealing surfaces. The sealing member may comprise an upper plurality of layered finger seals and a lower plurality of layered finger seals.

Abstract: A sealing component (61) for a turbine (15) positionable at an interface between a transition section (21) for carrying exhaust gas and a turbine inlet section (32). A U-shaped section (45) includes first and second legs (67, 69). When the sealing component is positioned at the interface, the legs extend about the turbine axis. A seal flange (75) connects to the U-shaped section. The positioned sealing component extends about the axis and in a direction away from the first leg. The seal flange faces the inner surface (76) of the flange. A flexible strip (79), positioned radially outward with respect to the seal flange, extends about the axis and extends along the axis between the U-shaped section and the flange. The flexible strip acts as a spring member pressing against the outer surface (96) of the flange.

Abstract: A seal member for effecting a seal preventing fluid flow in an axial direction through an annular space formed between two relatively moving components including a rotatable shaft and a stator structure. The seal member includes a plurality of flexible seal strips. Each seal strip includes a planar plate extending radially through the annular space and having a radially outer end supported to the stator structure and a radially inner end defining a tip portion extending widthwise in the axial direction engaged in sliding contact with a peripheral surface of the rotatable shaft. At least one of the seal strips includes a plurality of perforations extending through the seal strip and located between a leading edge and a trailing edge of the seal strip for effecting an increased flexibility of the seal strip adjacent to the tip portion.

Abstract: A seal includes a polymeric jacket defining a seal surface and an inner cavity extending within the polymeric jacket along a length of the polymeric jacket. The seal further includes a spring extending within the inner cavity and including a plurality of laser cut spring elements. The seal can be disposed between a static component and a rotatable component.

Abstract: Embodiments of a gas turbine engine including a finger-foil seal are provided, as are embodiments of a finger-foil seal. In one embodiment, the finger-foil seal includes an aerodynamic foil having a generally annular body through which a first opening is formed. A finger seal retention structure is disposed around the aerodynamic foil. A finger seal backing spring is coupled to the finger seal retention structure and extends radially inward therefrom to contact an outer circumference of the aerodynamic foil. A first anti-rotation pin extends radially from the finger seal retention structure and into the first opening formed in the aerodynamic foil to inhibit rotation of the aerodynamic foil during operation of the finger-foil seal.

Abstract: A rotary valve including a housing having an inner surface. A rotary assembly is positioned for rotation within the housing. The rotary assembly includes a plurality of radially outwardly extending vanes. The vanes extend toward the inner housing surface and are configured to transport material along the inner housing surface. Seal members are mounted upon the vanes. Spring members are secured to the vanes urging the seal members into contact with the inner housing surface.

Abstract: A composite seal for sealing in high temperature applications includes an inner spring for controlling the sealing load or the spring rate, and an outer jacket for providing a sealing surface. In one embodiment, the inner spring, which be made from cast blade alloys, includes a plurality of flexible fingers which are inclined with respect to a longitudinal axis of the outer jacket having a continuous outer sealing surface. The spring rate of the jacket is preferably at least about 50% less than the spring rate of the spring in order to achieve desired sealing. In one embodiment, one or more of the flexible fingers a single crystal construction and are supported by a holding ring. The axis of the finger may preferably be positioned parallel to a softer crystallographic direction of the blade alloy of the finger.

Abstract: A seal assembly adapted for use in creating a seal between an axially extending shaft and a support member. The seal assembly defines an axial passage through which the shaft extends, wherein a bearing assembly is mounted to the support member and includes a stationary outer race and an inner race which rotates along with the shaft. The seal assembly includes a rigid ring defining an axial passage through which the shaft extends and a resilient material carried by the ring. The resilient material defines an inner sealing section adapted to engage the shaft and an outer sealing section located radially outwardly of the inner sealing section and adapted to engage an outer sealing surface associated with the support member.

Abstract: The present invention relates to a plug valve comprising a valve body and a shutter that can be actuated, in the form of a segment of a sphere provided with a mobile shaft in rotation and/or translation, said valve also comprising a double-barrier sealing system at the level of said shaft, said valve being characterised in that the joints of said double-barrier sealing system are maintained in place relative to the shaft by a single lid.

Abstract: A low leakage seal for separating two environments and contacting a component surface is provided. The seal includes a base and an annular rib. The annular rib is coupled to and extends from the base. The annular rib includes at least one contact surface configured to contact the component surface having a plurality of angularly cut radial grooves formed therein. The annular rib flexes and pressure energizes in the presence of a pressure differential between the two environments.

Abstract: Herein disclosed is a shaft sealing apparatus which comprises a vacuum casing formed with a vacuum chamber, a driving shaft having an outer cylindrical surface and movably extending in the vacuum chamber of the vacuum casing, and a sealing ring in the form of an annular ring shape and including a sealing lip held in contact with the outer cylindrical surface of the driving shaft, an annular spring member operative to impart a force to the sealing lip to ensure that the sealing lip is held in tight contact with the outer cylindrical surface of the driving shaft, and a peripheral portion radially outwardly extending from the sealing lip, in which the outer cylindrical surface of the driving shaft is smaller in surface roughness Ra than 0.1 (?m).

Abstract: A ball joint includes a socket and a stud having a ball end portion received in the socket and a shank projecting from the socket. An annular seal has an intermediate portion extending between first and second end portions. The second end portion of the seal has an engagement portion in sealing engagement with the shank portion of the stud. A spring is molded in the second end portion of the seal and extends for 360 degrees around the circumference of the shank portion at a location radially outward of the engagement portion. The spring has a circular array of spring fingers that extend radially inward from a main body portion and exert a radially inward directed force on the engagement portion to maintain it in sealing engagement with the shank portion.

Abstract: A rotating seal assembly, comprising: a first member having a circular hole passing therethrough; a second member having a circular shape, the second member being positioned such that an annular gap is present between the first and second members; a contacting member spanning across the annular gap, the contacting member being mounted to one or the other of the first and second members; at least one support assembly disposed on one of the first or second members, the at least one support assembly being mounted to the same member as the contacting member; and a sealing ring, wherein the support assembly holds the sealing ring against the contacting member, thereby pushing the contacting member against the opposite member to which the support assembly is attached.

Abstract: A seal assembly for installation between rotating and stationary components of a machine includes a first plurality of leaf spring segments secured to the stationary component in a circumferential array surrounding the rotating component, the leaf spring segments each having a radial mounting portion and a substantially axial sealing portion, the plurality of leaf spring segments shingled in a circumferential direction.

Abstract: This invention describes a seal ring which is consisted of a spiral spring wire acting as an expander device where in turn is inserted inside a C and or U shaped jacket made of a softer material such as elastomer or teflon in such a manner that forces the outer and inner lips of this jacket outwardly and inwardly accordingly to create a seal under extreme side loading and offsets of mating shaft.

Abstract: In a centrifugal pump, a barrier ring in the form of a dynamic seal member is interposed between relatively rotating, generally circular wall portions which undergo relative axial movement to vary the width of a gap between the wall portions, the seal member having an outer jacket of flexible material and an annular spring member of frustoconical configuration inserted into offset grooves in the jacket, and when the seal member is mounted under compression between the confronting surfaces will follow the relative axial movement between the wall portions to maintain liquid-tight sealing engagement with the wall portions. In a modified form of invention, the seal member includes a pair of helical spring members inserted into grooves in an outer flexible jacket and, when the seal is mounted under compression between confronting surfaces of the wall portions as described will maintain liquid-tight sealing engagement notwithstanding variations in the width of the gap between members.

Abstract: The invention provides a submersible pumping system which includes a motor containing self-centering rotor bearing assemblies. Each rotor bearing assembly in accordance with the present invention includes a sleeve, a journal, and at least two seals. The journal is preferably disposed about the sleeve which is keyed to the power transmission shaft of the motor. The journal has a peripheral surface which is configured to have at least two circumferential support regions which are spaced apart from one another. Each of these circumferential support regions supports a corresponding seal. Each seal includes an interface member and an activating member. When in place in a rotor section of a submersible pump motor, the seals frictionally engage the inner surface of the stator and exert a centering force against the journal and thus against the bearing sleeve and the power transmission shaft.

Abstract: An expansion joint seal between a gas turbine exhaust duct and an axially adjacent exhaust ductwork comprising plural layers of axially adjacent layers of flexible seal plates, each layer comprising a plurality of arcuate segments which together form a 360.degree. annulus; and further wherein the plural layers of flexible seal plates are secured at one end to the gas turbine exhaust duct, with opposite ends of the seal plates slidably engaged with at least one surface of the exhaust ductwork.