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PROCESS OF DYNAMIC SEALING

Subclass of:

277 - Seal for a joint or juncture

Patent class list (only not empty are listed)

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Class / Patent application numberDescriptionNumber of patent applications / Date published
277306000 Relatively rotatable radially extending sealing face member (e.g., face, mechanical, etc.) 28
277301000 Close proximity seal (e.g., contactless, fluent, etc.) 28
277309000 Peripheral radially sealing flexible projection (e.g., lip, piston cup seal, etc.) 15
277308000 Contained or compressed by gland member in packing box 5
20090121440Dry-running piston rod sealing arrangement, and method for sealing a piston rod using one such arrangement - The invention relates to a dry-running piston rod sealing arrangement (05-14-2009
20130087975Sealing Device In A Polymer Filtration Device - A sealing device for sealing a slide plate in a polymer filtration apparatus where the slide plate is translatable across an extrusion bore extending through a housing of the polymer filtration apparatus. A spring device can be positioned around the outer periphery surfaces of the seal for axially biasing the sealing surface of the seal against the slide plate with a preload bias. Increasing pressure of polymer in the extrusion bore can enter a region in the seal cavity upstream of the thrust surface of the seal and can provide polymer pressure in the axial direction for exerting axial force against the thrust surface of the seal for causing the sealing surface to be further biased against the slide plate.04-11-2013
20120007314FULL BORE COMPRESSION SEALING METHOD - An annular seal, in certain embodiments, includes a top seal section, a bottom seal section, and a core seal section including non-orthogonal top and bottom faces relative to a radial axis of the core seal section disposed between the top seal section and the bottom seal section. The core seal section is configured to expand radially when an axial load is applied to the top and bottom faces of the core seal section such that the top and bottom faces are deformed into an orthogonal alignment relative to the radial axis of the core seal section.01-12-2012
20080265515DRIVEN SEAL ASSEMBLY FOR ROTARY DRIVE SHAFT OF MOTOR - A driven seal assembly is provided for a shaft rotated by a motor disposed in a motor housing and having a seal housing adjacent to the motor housing through which the shaft extends. A first stationary seal seat is mounted on the shaft and secured in a bore of the seal housing. A first rotary seal is frictionally fit on the shaft adjacent the first stationary seal seat. A second stationary seal seat is mounted on the shaft and is secured in a bore of the motor housing. A second rotary seal is frictionally fit on the shaft adjacent the second stationary seal seat. A spring surrounds the shaft and provides bidirectional axial forces on the first and second rotary seals against the first and second stationary seal seats. A positive drive mechanism is mounted on the shaft between the first and second rotary seals in a driving, mating relationship therewith and includes a first driving element in driving engagement with the first rotary seal and a second driving element in driving engagement with the second rotary seal. The spring is placed in compression between the first and second driving elements.10-30-2008
20100090409Packing Assembly for Reciprocating Pumps - A packing assembly adapted to be mounted on and seal a reciprocating shaft includes a packing nut, an elastomeric sealing member releasably coupled to the packing nut, and a keeper to facilitate the releasable coupling between the elastomeric sealing member and the packing nut, wherein the entire assembly is removable from the reciprocating shaft as a unit.04-15-2010
277310000 Piston ring for internal combustion engine 2
20090051117SEALING RINGS - This invention relates to sealing rings for sealing between relatively moveable parts of an engine. A sealing ring can is typically located in the groove 02-26-2009
20110260410Method for stabilizing a piston ring and means for carrying out said method and use of same - A piston ring (10-27-2011
277311000 Flexible ring 1
20130087976Seal Assembly with Pre-strained Sealing Member - A seal for sealing a space between a shaft and a housing, includes a base member coupled with one of the housing and the shaft and a generally annular, elastomeric sealing member sealingly contactable with the other one of the housing and the shaft. The sealing member is coupled with the base member such that the sealing member is circumferentially strained to reduce friction between the sealing member and the other one of the housing and the shaft. The seal assembly is preferably formed by providing a base member having a generally annular carrier portion and a generally annular, elastomeric sealing member, coupling the sealing member with the annular portion of the base member, and plastically deforming at least a section of the base member carrier portion such that the sealing member is circumferentially strained.04-11-2013
Entries
DocumentTitleDate
20110204572SEAL ASSEMBLY AND METHOD - 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.08-25-2011
20090194945ENERGIZED COMPOSITE METAL TO METAL SEAL - 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.08-06-2009
20130069313TURBOMACHINE SECONDARY SEAL ASSEMBLY - An exemplary turbomachine secondary ring seal assembly includes a base portion that extends circumferentially about an axis and a protrusion extending from the base portion toward the axis. The protrusion has a sealing surface that contacts a support to limit movement of a fluid from a first axial side of the base portion to a second opposite axial side of the base portion. The sealing surface faces the axis. The sealing surface may also face in a radial direction.03-21-2013
20130069314Multiple Use Installation Aid for Radial Shaft Seals - A shaft-sealing device comprising a sealing ring having a seal secured thereto, and a protective member engaged with the sealing ring. The said protective member includes a cylindrical member having a shaft-engaging surface and a seal-engaging surface, and an annular flange extends radially away from the shaft. The shaft-engaging surface is operable to be attached to the shaft during operation of the device, and the seal-engaging surface is operable to be in sealing contact with the seal during operation of the device. The annular flange is operable to engage the sealing ring.03-21-2013
20110260409Multiple Use Installation Aid For Radial Shaft Seals - A shaft-sealing device comprising a sealing ring having a seal secured thereto, and a protective member engaged with the sealing ring. The said protective member includes a cylindrical member having a shaft-engaging surface and a seal-engaging surface, and an annular flange extends radially away from the shaft. The shaft-engaging surface is operable to be attached to the shaft during operation of the device, and the seal-engaging surface is operable to be in sealing contact with the seal during operation of the device. The annular flange is operable to engage the sealing ring.10-27-2011
20110278797ULTRAVIOLET CURABLE SEALANT COMPOSITIONS - A curable sealant composition free from volatile organic compounds. The composition comprises a urethane acrylate oligomer present in an amount from about 20% to about 60% by weight. A liquid elastomer is present in an amount from about 20% to about 60% by weight, and at least one photoinitiator present in an amount from about 0.5% to about 10% by weight. A process for sealing a dynamic seal assembly in a housing bore is also provided.11-17-2011
20080309012Method and a Device for Supply of at Least One Substance Into Interspace Between Mutually Movable, Coaxial Structural Elements - A method and a device for the supply of at least one substance (12-18-2008
20110127725PRESSURE-BALANCED FLOATING SEAL HOUSING ASSEMBLY AND METHOD - 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.06-02-2011
20090200744Tuned fluid seal - 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.08-13-2009
20110018204BRUSH SEAL AND METHOD FOR MOUNTING A BRUSH SEAL - 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.01-27-2011
20100253003SEALING ASSEMBLY - A sealing assembly (10-07-2010
20110187054TEMPERATURE ADAPTIVE RADIAL SHAFT SEAL ASSEMBLIES USING SHAPE MEMORY ALLOY ELEMENTS - 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.08-04-2011
20120038111DEVICE FOR PASSIVE PRESSURE SEALING - A sealing system between a relatively rotating element and a stationary element has at least three sealing elements arranged between the rotating element and the stationary element and arranged in series between a process fluid and an environment, and a barrier fluid arrangement to provide a barrier fluid to spaces formed between the sealing elements. The barrier fluid arrangement has at least two compensator devices where under use the pressure in the process fluid is acting on one side of a piston in the compensator device and the pressure in the barrier fluid is acting on the opposite side of the piston. There is a difference between cross sectional areas of the two sides of the piston and the difference varies between the at least two compensator devices.02-16-2012
20120038112FLOW DISTRIBUTED BUFFERED/EDUCTED GAS SEAL - A system, in certain embodiments, includes a seal assembly having a seal body. The seal body includes an inlet buffer port and an outlet eduction port. The inlet buffer port is configured to receive a compressed buffer gas, such as shop air, which is injected into the inlet buffer port. The compressed buffer gas blocks the flow of a compressed process gas, such as land fill gas, by opposing the flow of the compressed process gas through the seal assembly. Both the compressed buffer gas and the compressed process gas may be expelled through the outlet eduction port.02-16-2012
20110316235Pumping Seal Assembly with Angled Spring - A seal assembly is for sealing a space between a housing and a shaft rotatable about a central axis. The seal assembly includes a seal body connectable with the housing and having an inner circumferential sealing surface. The sealing surface has opposing axial ends and is slidably contactable with the shaft outer surface to define a sealing interface. An annular biasing member, preferably a garter spring, is disposed about a portion of the seal body and has a centerline. The biasing member exerts a biasing force directed radially inwardly toward the centerline, such that the seal exerts a contact pressure on the shaft. Further, the biasing member is angularly positioned on the seal body such that the contact pressure extends axially along the shaft axis to direct substances entering the sealing interface toward a proximal axial end of the sealing surface when the shaft rotates about the central axis.12-29-2011
20110089641TWO-PIECE SEALING DEVICE - 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.04-21-2011
20120211942ASSEMBLY FOR SEALING A SLIDING INTERFACE - An assembly is disclosed for sealing the sliding interface between two objects capable of sliding or moving with respect to one another, but where the sliding interface must provide a substantial seal against pressure loss therethrough, such as where an assembly seals the sliding interface between a piston and a cylinder or between a rod and a bushing. Although some features of this invention would be beneficial in applications using a liquid lubricant, the invention is particularly beneficial in applications not using a liquid lubricant, where the materials of the piston, cylinder, and sealing system are chosen additionally for their ability to provide self-lubrication as they slide over each other, while providing low friction and a low wear rate during sliding.08-23-2012
20110121513SEALING RING AND DEVICE AND METHOD FOR INSTALLING A SEALING RING - (EN) The invention relates to an installation device (05-26-2011
20110215529Hydrodynamic Circumferential Seal System for Large Translations - 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.09-08-2011
20110254227Seal - 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.10-20-2011
20100276890Multistage Brush Seal - 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.11-04-2010
20100314835Zero Emissions Reciprocating Pump - 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.12-16-2010
20130154192SEALING ASSEMBLY - A sealing assembly including a sealing component and a structural member. The sealing component has a first surface structure. The structural member has a second surface structure. A portion of the second surface structure is in contact with at least a portion of the first surface structure. The first surface structure and/or the second surface structure is a nano-textured surface. Interaction of the first surface structure with the second surface structure dynamically reduces friction, leakage of a fluid, and/or wear between the sealing component and the structural member.06-20-2013

Patent applications in class PROCESS OF DYNAMIC SEALING

Patent applications in all subclasses PROCESS OF DYNAMIC SEALING