| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 277306000 |
Relatively rotatable radially extending sealing face member (e.g., face, mechanical, etc.)
| 50 |
| 277301000 |
Close proximity seal (e.g., contactless, fluent, etc.)
| 44 |
| 277309000 |
Peripheral radially sealing flexible projection (e.g., lip, piston cup seal, etc.)
| 25 |
| 277308000 |
Contained or compressed by gland member in packing box
| 8 |
| 277310000 |
Piston ring for internal combustion engine | 5 |
| 20090051117 | SEALING 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 |
| 20110260410 | Method for stabilizing a piston ring and means for carrying out said method and use of same - A piston ring ( | 10-27-2011 |
| 20130320625 | INSERTION APPARATUS - An insertion apparatus supplies malleable material into a piston ring groove. An arcuate nozzle is supplied with malleable material under pressure created by a plunger urged by an actuator driven by an electric motor. A rotatable piston nest made of resilient material receives and snuggly secures a piston therein. The rotatable piston nest and piston are movable between a first, retracted position and a second, extended position. In the extended position the groove of the piston ring is spaced in proximity to the arcuate nozzle where malleable material is metered into the groove. Rotational indexing of the piston enables placement of the malleable material in circumferential locations within the piston ring groove. | 12-05-2013 |
| 20140265140 | DISSIMILAR RADIAL WALL OIL CONTROL RAILS - Exemplary pistons and oil control ring assemblies are disclosed, along with methods of making and using the same. An exemplary piston assembly includes a main body defining an outer circumferentially disposed groove, and an oil control ring assembly selectively disposed within the outer circumferentially disposed groove. The oil control ring assembly may include upper and lower oil control rails selectively disposed within the piston groove, each having a respective seal surface configured to seal against a piston bore surface of an engine. The oil control ring assembly may further an expander selectively disposed in the groove. The expander may be configured to push the upper and lower oil control rails radially outward to contact the piston bore surface. The upper and lower oil control rings may define different radial widths. | 09-18-2014 |
| 20190145271 | METHOD AND DEVICE FOR PISTON SEAL ANTI-ROTATION | 05-16-2019 |
| 277311000 |
Flexible ring | 3 |
| 20130087976 | Seal 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 |
| 20140125012 | COMPRESSABLE SEALING RING ASSEMBLY - A compressible sealing ring assembly seals an annulus between a radially outer member and a radially inner member. The sealing ring comprises one or more sealing ring members ( | 05-08-2014 |
| 20140339772 | ROTATING CONTROL DEVICE HAVING SEAL RESPONSIVE TO OUTER DIAMETER CHANGES - A rotating control device for sealing about a drill string having a change in outer diameter can include a seal which rotates with the drill string, the seal including at least two chambers connected by a passage, and a fluid which flows between the chambers via the passage in response to displacement of the outer diameter change through the seal. A method of sealing can include forming at least two chambers in a resilient material of a seal, displacing the outer diameter change into the seal, thereby transferring fluid from a first chamber to a second chamber, and displacing the outer diameter change out of the seal, thereby transferring the fluid from the first chamber to the second chamber. One of the chambers can increase in volume while the other of the chambers decreases in volume. | 11-20-2014 |
| Entries |
| Document | Title | Date |
|---|
| 20080309012 | Method 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 |
| 20090194945 | ENERGIZED 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 |
| 20090200744 | Tuned 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 |
| 20100253003 | SEALING ASSEMBLY - A sealing assembly ( | 10-07-2010 |
| 20100276890 | Multistage 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 |
| 20100314835 | Zero 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 |
| 20110018204 | BRUSH 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 |
| 20110089641 | TWO-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 |
| 20110121513 | SEALING RING AND DEVICE AND METHOD FOR INSTALLING A SEALING RING - (EN) The invention relates to an installation device ( | 05-26-2011 |
| 20110127725 | PRESSURE-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 |
| 20110187054 | TEMPERATURE 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 |
| 20110204572 | SEAL 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 |
| 20110215529 | Hydrodynamic 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 |
| 20110254227 | Seal - 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 |
| 20110260409 | Multiple 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 |
| 20110278797 | ULTRAVIOLET 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 |
| 20110316235 | Pumping 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 |
| 20120038111 | DEVICE 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 |
| 20120038112 | FLOW 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 |
| 20120211942 | ASSEMBLY 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 |
| 20130069313 | TURBOMACHINE 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 |
| 20130069314 | Multiple 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 |
| 20130154192 | SEALING 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 |
| 20130313780 | VARIABLE TG ARTICLE, METHOD OF MAKING, AND USE OF SAME - An article includes a crosslinked product of: a first crosslinked polymer and a second crosslinked polymer, wherein the article has a gradient in glass transition temperature. A process for making the article includes combining a first crosslinked polymer and a second crosslinked polymer to form a composition; compressing the composition; heating the composition; and crosslinking the composition to form the article, the article having a gradient in glass transition temperature. An article can be a seal that includes a first portion including a crosslinked product of: a first crosslinked polymer and a second crosslinked polymer; and a second portion including a polymer which is different than a constituent polymer in the first portion, wherein the seal has a gradient in glass transition temperature. | 11-28-2013 |
| 20130313781 | Seal Ring - Sandwiching of a foreign matter between a seal ring and a housing is suppressed, and abrasion of the housing and the seal ring is suppressed. The size of the diameter of a second seal portion | 11-28-2013 |
| 20130320624 | LEAF SEAL - A leaf seal is provided for effecting a seal between two, coaxial, relatively rotating components. The leaf seal has an annular pack of stacked leaves. The pack is mountable to a first one of the components at root portions of the leaves and extends towards the other component such that end edges of the leaves are presented for wiping contact with the other component and, in use, a pressure drop is maintained axially across the pack. The leaf seal has a coverplate at the high or the low pressure side of the pack covering a portion of the radial extent of the pack. Some or all of the leaves have respective abutment formations. Each abutment formation is arranged to abut the coverplate at a stop portion upon radial deflection of the leaf by a predetermined amount to prevent further radial deflection beyond that amount. | 12-05-2013 |
| 20140117623 | REDUNDANT SEAL APPARATUS AND METHOD - An apparatus includes a rotatable shaft having a shaft surface and a first seal disposed in a sealing engagement with the shaft surface. At least a second seal is disposed in a first position relative to the rotatable shaft where the second seal is not in sealing engagement with the shaft surface and is movable to a second position relative to the rotatable shaft where the second seal is in sealing engagement with the shaft surface. | 05-01-2014 |
| 20140353914 | Seal with Replaceable Sealing Member - In described embodiments, a seal assembly for sealing a space between a shaft and a housing is provided. The shaft has a shaft centerline. The seal assembly has an outer portion connectable to the housing and an inner portion extending radially inwardly from the outer portion toward the shaft. The inner portion has a generally concave cavity. A generally annular sealing member is releasably inserted into the cavity. The sealing member has a shaft contact surface engageable with the shaft. A method of removing and replacing the sealing member is also provided. | 12-04-2014 |
| 20150069711 | VARIABLE TG ARTICLE, METHOD OF MAKING, AND USE OF SAME - A seal comprises: a first portion including a crosslinked product of: a first crosslinked polymer; and a second crosslinked polymer; and a second portion including a polymer which is different than a constituent polymer in the first portion, wherein the seal has a gradient in glass transition temperature. A method for sealing comprises: disposing the seal of claim | 03-12-2015 |
| 20150076768 | ARRANGEMENT FOR SEALING A PROPELLER SHAFT OF A MARINE VESSEL AND A METHOD OF CONTROLLING THE OPERATION THEREOF - An arrangement for sealing a propeller shaft of a marine vessel are specifically applicable in preventing oil leakage via propeller shaft sealing in cases where the draught of a marine vessel is, for some reason, reduced beyond its ordinary value. | 03-19-2015 |
| 20160018001 | SEALING SYSTEM AND METHOD FOR THE PRODUCTION THEREOF - The invention relates to a seal for high pressure applications, in which a static and a dynamic sealing portion are separated from each other by a material thin point in such a manner that plastic flowing through the thin point is suppressed even if one of the two sealing portions is acted upon under high pressure as far as elastic compression. | 01-21-2016 |
| 20160031472 | PANEL SEALING APPARATUS AND A METHOD OF ASSEMBLING THE PANEL SEALING APPARATUS - A panel sealing apparatus and a method of assembling the panel sealing apparatus are disclosed. The apparatus includes a panel defining an aperture and a sealing assembly. The sealing assembly includes a first component formed of an elastomeric material and a second component formed of a rigid material. The second component at least partially surrounds the first component and is secured to the first component to form a unit. The sealing assembly further includes a connector configured to be attached to the panel in the aperture separately from the unit. The unit is attached to the connector after placement of the connector in the aperture to couple the unit to the panel. | 02-04-2016 |
| 20160091091 | ASSEMBLY 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. The sliding interface includes a seal located in a seal groove, wherein the seal ring height is less than the height of the seal groove and the inner diameter of the seal is greater than the base of the groove. In one aspect, the difference in height is set by a shim and a piece of material of the same height as that of the seal ring. | 03-31-2016 |
| 20160102764 | Seal - 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. | 04-14-2016 |
| 20160131131 | WIPER SEAL ASSEMBLIES FOR A RECIPROCATING PUMP AND METHODS RELATING THERETO - A wiper seal assembly for a reciprocating pump, the pump including a power section configured to be powered by a motor, a fluid section having an inlet and an outlet, and a plunger having a longitudinal plunger axis, a first end coupled to the power section, and a second end opposite the first end and disposed within the fluid section. The wiper seal assembly includes a cover mounted to the power section. In addition, the wiper seal assembly includes a first wiper seal radially disposed between the cover and the plunger. Further, the wiper seal assembly includes a splash guard disposed about the plunger and axially spaced from the cover. Still further, the wiper seal assembly includes a biasing member axially biasing the splash guard away from the first wiper seal. | 05-12-2016 |
| 20160172062 | ACTIVE SURFACE FOR A PACKING SEAL INTENDED FOR A SHAFT SEALING SYSTEM | 06-16-2016 |
