Class / Patent application number | Description | Number of patent applications / Date published |
277346000 | Diverse and distinct dynamic seals | 85 |
20080290604 | BARRIER SEALING SYSTEM FOR CENTRIFUGAL COMPRESSORS - A rotary machine includes a machine rotor, a bearing coupled to the machine rotor, a machine stator, and a sealing device disposed between the machine rotor and the machine stator. The sealing device includes a dry gas seal and first and second seals disposed between the dry gas seal and the bearing. One or both of the first and second seals includes a brush seal or more specifically a brush seal including a plurality of non-metallic fibers. | 11-27-2008 |
20100156050 | SEALING DEVICE FOR ROTARY FEEDTHROUGH - A sealing device for a rotary feedthrough for receiving a rotating machine element whose outer side can be applied to another machine element includes at least two sealing elements disposed in tandem in the axial direction of the machine element. Inner sides of the sealing elements are configured for forming an active sealing connection with the rotating machine element. At least one of the sealing elements can be pressurized with an additional force acting in the radial direction so that the force of compression acting on the rotating machine element for the at least one of the sealing elements can be adjusted relative to the force of compression acting on the rotating machine element due to at least one other sealing element. | 06-24-2010 |
20130113163 | Maintenance and Emergency Run Secondary Seal - A maintenance and emergency run secondary seal mountable to a rotatable shaft is described. The seal includes a housing; a sealing ring having a double-tapered receiving channel located between two exterior surfaces and an interior wear surface; a lantern ring having a double-tapered profile for enabling engagement within the receiving channel of the sealing ring to form an air chamber between the sealing ring and the lantern ring; and an arrangement for directing and controlling pressurized air to the air chamber. The operating positions for the sealing ring are: where the sealing ring is spaced from the shaft, where a portion of the interior wear surface of the sealing ring is closed-in on the shaft to enable an emergency run secondary seal to permit shaft rotation and where the sealing ring is in full contact with the shaft to enable a static seal. | 05-09-2013 |
20130277917 | Shaft Seal Assembly - An illustrative embodiment of a multi-shaft seal assembly generally includes a first seal, a second seal, and a collar. In the illustrative embodiment the collar may be integrally formed with a portion of the first seal, and may serve to axially space the second seal from the first seal. The second seal may be formed with a cutaway therein to ensure proper clearance between the second seal and one of the shafts. Other embodiments of the multi-shaft seal assembly use a collar formed with the equipment housing or second seal. Still other embodiments include additional seals for additional shafts. | 10-24-2013 |
277347000 | Close proximity seal (e.g., contactless, fluent, etc.) | 55 |
20080211192 | Blade outer air seal - A turbine engine blade outer air seal segment has a body having a base portion. The base portion has a transversely concave ID face, a forward end, an aft end, and first and second circumferential edges. The body has at least one mounting hook. At least one cover plate is secured to the body to define at least one cavity. The cover plate has a plurality of feed holes. A plurality of outlet holes extend through the base portion to the ID face. At least one of the base portion and cover plate comprises a protruding portion protruding into the cavity to form a partial restriction separating circumferentially and fore-aft offset cavity portions. | 09-04-2008 |
20090033036 | GAS TURBINE WITH ANNULAR HEAT SHIELD - A gas turbine includes a supporting structure which concentrically surrounds a hot gas path and is shielded with respect to the hot gas path by an annular heat shield ( | 02-05-2009 |
20100219585 | ISOLATOR SEAL - An isolator seal includes a stator member for placement into the stator of rotating equipment and a rotor member for placement onto a rotary shaft of the rotating equipment. The stator member and the rotor member provide respective adjacent surfaces, while a static shut-off device engages both adjacent surfaces when the rotor member is static and disengages one or more of the surfaces when the rotor member is dynamic. In one embodiment of the invention at least one of the surfaces is inclined to the longitudinal axis at an angle greater or less than 90°. In a further embodiment, the static shut-off device includes a resilient annular sealing member and an auxiliary member, which can move between a first position, when the rotor member is static, at which the auxiliary member compresses the resilient annular member into engagement with both surfaces, and a second position at which the compression on the resilient member is reduced, so that the resilient annular member disengages one or more of the rotor and stator surfaces when the rotor is dynamic. | 09-02-2010 |
20110254229 | SEAL ASSEMBLY - Seal assemblies are provided. In one embodiment, an example shaft seal assembly comprises an immiscible fluid and a reservoir structure. The immiscible fluid is immiscible with respect to a contained internal fluid in an enclosure with a penetrating shaft. The reservoir structure is disposed in close proximity to the shaft, and the reservoir structure contains the immiscible fluid. The immiscible fluid of the seal assembly provides a fluid barrier to the internal fluid to limit loss of the internal fluid over time. | 10-20-2011 |
20120126483 | BRUSH SEALS - A brush seal including a bristle pack mounted in a holder, and having a free end for sealing with a member, a front plate for lying on a high pressure side of the seal and extending part way along the length of the bristle pack to a free end being spaced from the bristle pack characterised in that the front plate is formed for or carries a formation for reducing the influence of swirling fluid on the high pressure side on the bristle pack. | 05-24-2012 |
20130181408 | BRUSH SEAL ARRANGEMENT COMBINED WITH HONEYCOMB SEAL - A hybrid seal carrier for establishing a seal between a rotating component and a stationary component substantially surrounding the rotating component includes a first seal element held between forward and aft end plates and adapted to be seated within a first slot formed in the stationary component. A second seal element is seated within a second slot formed in one of the forward or aft end plate; wherein said first seal element comprises a plurality of bristles forming a brush seal; and said second seal element comprises at least one honeycomb seal. | 07-18-2013 |
20130214492 | GAS TURBINE ENGINE LUBRICATION FLUID BARRIER - A system for forming a barrier between a lubrication oil region and an air region of a gas turbine engine comprising a lubrication oil return path, a centrifugal oil slinger on a rotating member fixed to a spool of the gas turbine engine, a spiral groove configured to directs lubrication oil toward an oil return path, a labyrinth seal, and a cavity configured to form a non-contacting seal with the spiral groove and the labyrinth seal. | 08-22-2013 |
20150014936 | MACHINE TOOL INCLUDING SEALING STRUCTURE IN ROTATION UNIT - A machine tool including a sealing structure in a rotation unit includes a gas supply amount control unit configured to control so that an air sealing gas supply amount in the case of a deceleration state of the rotation unit determined by a rotation state determination unit becomes larger than an air sealing gas supply amount in the case of a non-deceleration state determined by the rotation state determination unit. | 01-15-2015 |
20150300189 | INTERSTAGE SEAL ASSEMBLY FOR GAS TURBINE ENGINE - A seal assembly is provided for a turbine engine and includes an annular labyrinth seal holder supported on a radially inner end of vanes A plurality of radially extending labyrinth seal elements are supported on the labyrinth seal holder, and a brush seal assembly is supported to the labyrinth seal holder downstream from the labyrinth seal elements. The brush seal assembly includes a brush seal holder and a brush seal located adjacent to an axially rearward one of the rotor arms. The brush seal holder is attached to an axially facing surface of the labyrinth seal holder. A seal plate defining a detachable labyrinth seal element extends radially inward from the axially facing surface of the labyrinth seal holder to the rearward rotor arm at a location upstream of the brush seal. | 10-22-2015 |
277348000 | And relatively rotatable radially extending contacting sealing members (e.g., face, mechanical, etc.) | 16 |
20090315271 | Airtight magnetic seal for bearing casings - The airtight magnetic seal, in a compact single body, made of two concentric sections, an inner section ( | 12-24-2009 |
20090322031 | WINDBACK DEVICE - The present invention relates to a windback device and method of use to prevent lubricant from leaking from a lubricant sump. More specifically, the present invention is comprised of a windback device within a lubricant sump formed from the coupling of an annular sump housing, an annular fluid seal assembly, and a bearing. The annular housing substantially surrounds the runner to form a chamber. The seal assembly is coupled to a sump housing both of which are adapted to receive a rotatable runner such that a sealed chamber is formed around the runner. A plurality of inclined threads extend along an inner face of the windback device and are angled such that lubricant or fluid splashed from the rotating shaft is redirected away from a shaft seal element of the annular fluid seal and through leak off slots leading to the sump housing chamber. | 12-31-2009 |
20100327533 | SHAFT SEALING DEVICE - A shaft sealing device in which a load acting on a sliding section of the device is reduced to extend the life of the device and which permits no leakage of fluid in a machine to an atmospheric air to eliminate the need of recovery of the fluid. The shaft sealing device has seals arranged in three stages in the axial direction between a seal case and a rotating shaft passed through the inner periphery of the seal case. Of the seals of the three stages, a first-stage seal on the machine's inner side and a third-stage seal on the machine's outer side have a contact type mechanical seal structure in which a rotational sealing element and a stationary sealing element are in close sliding contact with each other. Further, of the seals of the three stages, the intermediate second-stage seal has a contactless mechanical seal structure in which a rotational sealing element and a stationary sealing element are kept by dynamic pressure so as not to be in contact with each other. A high-pressure sealing liquid is supplied by the pressure of fluid in the machine to an annular space surrounded by that portion of the seal case which extends from the first-stage seal to the second-stage seal. | 12-30-2010 |
20120056383 | Air Riding Seal - An improved air-riding seal system for turbine engines is presented. The seal system includes a movable primary seal assembly, a stationary secondary seal assembly, and at least one structure to increase the stiffness of a thin film between the primary seal and a rotating component. The primary seal assembly includes an annular seal ring and an arcuate support arm. The annular seal ring has a cross section that is substantially L-shaped and a surface with a step face and a circumferential dam. The arcuate support arm has a tooth at one end adjacent to an outermost circumferential surface along the seal runner, which could include an optional notch. The tooth and outermost circumferential surface are separated by a gap. A plurality of radial dams disposed along the surface in an outward radial arrangement from the circumferential darn is provided to improve the stiffness of the thin film. | 03-08-2012 |
20130147123 | AIR RIDING SEAL ARRANGEMENT - An air riding seal arrangement comprises two components | 06-13-2013 |
20150035233 | Adjustable Seal Apparatus for Mounting a Mixing Apparatus to a Vessel - An adjustable seal apparatus for mounting a mixing apparatus having a movable shaft in sealed engagement with a wall of a vessel and in a selected orientation with respect to the wall of the vessel. The adjustable seal apparatus includes a seal mechanism for creating a gas-tight seal between the shaft of the mixing apparatus and the wall of the vessel and an adjustable mounting mechanism for selectively positioning the shaft in a desired orientation. | 02-05-2015 |
20150115537 | SLIDING COMPONENT - A sliding component is characterized in that dimples are provided on one sealing face of a pair of sliding parts that mutually slide relative to each other, where the cavitation formation area on the upstream side of each dimple is positioned closer to the low-pressure fluid side and the positive-pressure generation area on the downstream side is positioned closer to the high-pressure fluid side, and the fluid that has been suctioned in the cavitation formation area of each of the above dimples travels in the dimple and is returned to the high-pressure fluid side from the positive-pressure generation area. | 04-30-2015 |
20150323079 | ESP Mechanical Seal Lubrication - Seal sections for electric submersible pumps. Seal sections are described which include a combination of a barrier fluid to protect a seal from unfavorable ingress and control of differential pressure across the face of the seal. | 11-12-2015 |
20160032765 | BEARING COMPARTMENT SEALING SYSTEM WITH PASSIVE COOLING - The present disclosure relates to sealing systems for bearing compartments. In one embodiment, a sealing system includes a runner configured to extend circumferentially around a rotating component, the runner is formed of a material with low radial thermal growth and is configured to tit to the rotating component to remove heat away from the runner. The runner can include an outer surface configured to provide passive cooling for the runner in the bearing compartment. The sealing system can also include a seal configured to operate with the runner, wherein the seal includes a clearance seal on an air side of the runner. The runner can be configured to operate without direct oil cooling. | 02-04-2016 |
20160033045 | SLIDING COMPONENT - Even when a fluid discharge for discharging high-pressure fluid (sealed fluid) to a high-pressure side of a sealing face is provided, the disclosed sliding component prevents precipitation, adhesion and accumulation of a deposition-causing substance through a dehydration condensation reaction between the high-pressure fluid and low-pressure fluid on the sealing face, and also prevents occurrence of cavitation which would otherwise take place in association with a sudden pressure drop due to a discharge of fluid. Disclosed is a pair of sliding components provided, on a high-pressure side of one of relatively sliding sealing faces thereof, with a fluid discharge for discharging fluid to a high-pressure fluid side, wherein a buffer groove for reducing penetration of low-pressure fluid toward the high-pressure fluid side is provided in the sealing face S on a low-pressure side of the fluid discharge. | 02-04-2016 |
277349000 | And circumferential peripheral radially sealing flexible projection (e.g., lip seal, etc.) | 6 |
20080203670 | Sealing apparatus and bearing apparatus having the same - A sealing apparatus includes a slinger which includes a cylindrical portion, and radially-extending portions and provided respectively at axially-opposite ends of the cylindrical portion and an elastic member which includes a base portion fixed to a surface of an inner radially-extending portion of a radially-extending core metal member, and a lip portion connected with the base portion. The lip portion is formed by a first axial lip contacting one radially-extending portion of the slinger and a second axial lip contacting the other radially-extending portion of the slinger. The elastic member is formed such that in an axial cross-section, the distance between a cylindrical portion-opposing surface of the elastic member radially opposed to the cylindrical portion and the cylindrical portion is increasing generally uniformly axially outward. | 08-28-2008 |
20090085299 | Sealing Device - A sealing device formed to seal between a fixed side member and a rotating side member, comprising a slinger having a fitting cylindrical part fitted to the rotating side member and a flange part formed at one end part of the fitting cylindrical part positioned on the outer side of a sealed portion so as to be extended in the radial direction. A core comprises at least a fitting cylindrical part fitted to the fixed side member. The sealing device is characterized in that one end part of the fitting cylindrical part positioned on the outer side of the sealed portion is positioned on the sealed portion side more than the sealed portion side inner surface position of the flange part of the slinger and a part of a seal lip part is formed to be projected from near one end part of the fitting cylindrical part of the core and to be brought into elastically slidable contact with the extended end face of the slinger. | 04-02-2009 |
20100052262 | Sealing device - A sealing device for sealing space between two members concentrically and relatively rotating comprising a core member fixedly fitted into one of the two members, a metal slinger fixedly fitted into the other of the two members, and an elastic seal member fixedly attached to the core member and having a seal lip which elastically and slidably contacts the slinger. The slinger has a slidably contacting treated surface for the seal lip as is processed such a surface-treatment as defined by the following parameters: arithmetic mean roughness Ra in the range from 0.5 μm to 1.5 μm, root-mean-square roughness Rq in the range from 0.6 μm to 2.0 μm, mean surface irregularity interval Sm in the range from 0.05 mm to 0.17 mm and peak count Pc (50%) in the range from 20 to 60. | 03-04-2010 |
20130087978 | SEALING DEVICE - A sealing device ( | 04-11-2013 |
20150097340 | SEALING UNIT, IN PARTICULAR FOR ROLLING BEARINGS - A sealing unit having a first annular rotating shield and a second annular shield is provided. The second annular shield is fixed and arranged in front of the first shield for delimiting therebetween a first annular chamber and a sealing ring provided with at least a first and a second annular lips, which extend axially and radially projecting from a flange portion of the second shield and towards a flange portion of the first shield, inside the annular chamber. The first shield integrally supports a third annular lip that extends projecting from the first shield towards one of the first and second lips without touching it for defining a second dynamic labyrinth seal between the first and second shield and inside the annular chamber. | 04-09-2015 |
20160186861 | ROTARY SHAFT SEAL STRUCTURE FOR DRIVE SYSTEM OF VEHICLE - A rotary shaft and a seal mechanism are provided. The rotary shaft extends into outside air outside a case via a shaft hole provided in the case of a drive system. The seal mechanism prevents entry of foreign matter from the outside air into the shaft hole. The case includes a canopy portion and a recessed portion. The recessed portion is recessed coaxially with the canopy portion from an end face of the canopy portion in the direction of the axis. The seal mechanism includes a deflector and a seal member. The deflector is fixed to the rotary shaft in a liquid-tight manner, and extends into the recessed portion. The seal member is an elastic body. The seal member is fixed in the shaft hole in a liquid-tight manner, and is in sliding contact in a liquid-tight manner with the rotary shaft and the deflector. | 06-30-2016 |
277350000 | And circumferential contact seal | 30 |
20090189355 | Mechanical seal - A mechanical seal | 07-30-2009 |
20100066027 | Intershaft Seal Assembly - An intershaft seal assembly for counter-rotating and co-rotating turbine engines is described. The seal assembly includes a pair of end rings and a seal element. At least one end ring has a flange, with upper and lower surfaces, disposed along and extending from one side of the ring. The seal element includes a ring, with inner and outer radial surfaces, and a ring flange wider than the ring. The ring flange is disposed along and extends diametrically from the outer radial surface, the latter also contacting the lower surface along at least one flange. The seal element is disposed between the end rings so that the ring flange extends beyond the flanges. The invention avoids the wear and heating problems inherit to intershaft seal systems, thus allowing the seal element to be composed of a temperature resistant metal, metal alloy, or carbon graphite. | 03-18-2010 |
20100133756 | Shaft seal for steam turbines - A shaft seal for steam turbines is provided. The shaft seal steam barrier is supplied with a slight excess pressure. In order to avoid complex additional devices necessary for liquefying the water vapor once again, a condensation chamber, which is sealed from the surrounding air as well as from the steam barrier chamber with brush seals, is provided between the steam barrier chamber and the surrounding air. The condensation chamber is constructed in such a manner that the heat, developing in the interior thereof, is discharged to the outside. | 06-03-2010 |
20130001882 | SEALING ARRANGEMENT FOR A CONTROL DEVICE OF AN INTERNAL COMBUSTION ENGINE - A sealing arrangement for a control device of an internal combustion engine includes a housing. A channel is formed in the housing. The channel has a gas flow therethrough. A control member controls a flow of the gas in the channel. The control member is arranged on a shaft. A bearing supports the shaft in a bearing bore of the housing. A vent bore extends in the housing from an inner wall of the channel on an inlet side of the control member to a rear side, facing outward from the channel, of the bearing arranged in the housing, and into the bearing bore. A first groove is formed in the shaft behind the bearing. The first groove is configured so as to be circumferential when seen from the channel. The first groove is surrounded radially by a sealing device which is configured to cooperate with the first groove. | 01-03-2013 |
20130075975 | Seal for Oil-Free Rotary Displacement Compressor - Non-contacting cartridge shaft seals prevent leakage loss of process gases in an “oil free” rotary screw compressor or blower, while simultaneously preventing ingress of lubricating oil to the pumping chamber, allowing the compressor/blower to generate process pressure differentials without oil contamination. A compact unitized seal cartridge assembly is provided in the end plates of the pump housing. One of the rotor shafts extends through an aperture in the end plate or housing, between the pumping chamber and oil-lubricated gear/bearing cases. Internal elements have the ability to self-align radially achieving essential concentricity with shaft rotational axes. The rotor shafts or sleeves non-contact relationship during operation allow increased ranges of shaft rotational speeds. Air seal elements restrict flow of process air from the pumping or compression chamber, and oil seal elements with a directional spiral groove on the inside diameter prevent the leakage of lubricating oil to the process or atmosphere. | 03-28-2013 |
20130241153 | Windback Device for a Circumferential Seal - The disclosure describes a windback device for a circumferential seal within a turbine engine. The windback device includes an annular collar at one end of an annular fluid seal housing, at least one inclined thread, and a plurality of inclined baffles separately disposed along an outer circumferential surface of a rotatable runner. The housing is adapted at another end for an annular seal. The collar has an opening therethrough sized to receive the runner without contact. The annular seal surrounds and sealingly engages the runner. The threads extend from an inner face of the collar toward the runner. The baffles are separately recessed in or raised above the outer circumferential surface of the runner. The baffles are interposed between the runner and threads. Each baffle is separated from the threads via a radial clearance. Threads and baffles direct lubricant away from the annular seal. | 09-19-2013 |
20140117624 | PRESSURE ACTUATED FILM RIDING SEALS FOR TURBO MACHINERY - A seal assembly for a rotary machine is provided. The seal assembly includes multiple sealing device segments disposed circumferentially intermediate to a stationary housing and a rotor. Each of the sealing device segments includes a stator interface element, a shoe plate having an extended portion having one or more labyrinth teeth facing the rotor and a load bearing portion, wherein the shoe plate is configured to generate an aerodynamic force between the shoe plate and the rotor. The sealing device segment further includes a secondary seal configured to be in contact with the stator interface element at a radially outer end and configured to be in contact with an elevated nose section of the extended portion of the shoe plate on a radially inner end; and multiple flexible elements attached to the shoe plate and to the stator interface element. | 05-01-2014 |
20140145403 | Seal Arrangement for Sealing a Reciprocating Piston Rod of a Piston Compressor - To reduce leakage of pressure medium in a seal arrangement ( | 05-29-2014 |
20140167360 | DIAPHRAGM SEAL FOR STRUT BEARING - A rolling diaphragm seal for a strut bearing, the seal inserted into an annulus formed between an upper and lower housing. The seal having a hollow tubular form, formed into a ring open at one end. The seal rolling along a length thereof during relative rotation of the upper and lower housings. Alternatively, the seal can be a continuous hollow tubular form inserted between the upper and lower housings. | 06-19-2014 |
20140175751 | Adjustable Seal Apparatus for Mounting a Mixing Apparatus to a Vessel - An adjustable seal apparatus for mounting a mixing apparatus having a movable shaft in sealed engagement with a wall of a vessel and in a selected orientation with respect to the wall of the vessel. The adjustable seal apparatus includes a seal mechanism for creating a gas-tight seal between the shaft of the mixing apparatus and the wall of the vessel and an adjustable mounting mechanism for selectively positioning the shaft in a desired orientation. | 06-26-2014 |
20140217676 | SLIDING PARTS - Sliding parts are provided where a plurality of dynamic pressure-generating grooves for generating dynamic pressure via the relative rotational sliding of the stationary ring and the rotating ring are formed in a circumferential direction on a sealing face of one of a stationary ring and the rotating ring so as to communicate with a sealed fluid-containing space, and pumping areas for generating pumping action via the relative rotational sliding of the stationary ring and the rotating ring are formed within the dynamic pressure-generating grooves. | 08-07-2014 |
20160040781 | LABYRINTH SEAL - A labyrinth seal including a stator and a non-contacting rotor, and annular elastomeric seals. The confronting surfaces of the stator and rotor define at least one interface passage, including a radially-outermost annular interface passage between an annular, outermost, radially-extending projection of the stator and an annular rearwardly-extending distal projection of the rotor that overlaps the radially-extending projection of the stator, the radially-outermost annular interface passage tapering outwardly and rearwardly at an acute angle relative to an axial reference line. The annular elastomeric seals are stationary with the stator during dynamic operation of the rotor, and are not contacted by a surface of the rotor during dynamic operation. The interface can also have two radially-disposed exclusion chambers, the outer exclusion chamber being defined in part by a radially-inboard projection of the rotor. The stator can have a projection providing a contact avoidance interface position inboard of at least two contaminant-excluding interfaces. | 02-11-2016 |
20160053896 | APPARATUS FOR EXCLUDING PARTICLE CONTAMINANTS FROM A GAS LIFT OFF MECHANICAL SEAL - A particulate exclusion mechanism for a gas lift off seal includes a band fixed to the stationary seal face and extending over the lift off region between the stationary and rotating seal faces, thereby forming an annular cavity surrounding the lift off region that traps barrier gas therein as it leaks through the lift off region and inhibits process fluid from entering the annular cavity and reaching the lift off region. The band can be made of a non-abrasive material such as PTFE or PEEK. The band can extend over the rotating seal face, and a portion of the band can be sufficiently flexible to allow the extended end of the band to constrict in diameter and contact the rotating seal face if the process pressure exceeds the barrier gas pressure. The extended end can include a thicker terminating portion that minimizes clearance with the rotating seal face. | 02-25-2016 |
277351000 | Peripheral radially sealing flexible projection (e.g., lip seal, etc.) | 17 |
20090102134 | Sealing Device With Tone Wheel - A sealing device (A) with a tone wheel formed to seal between a fixed side member ( | 04-23-2009 |
20090206553 | Sealing Device - A sealing device ( | 08-20-2009 |
20090322032 | SEALING DEVICE - In a sealing device ( | 12-31-2009 |
20100007090 | SEALING DEVICE - To secure stability of the stacked sealing devices, a magnetic encoder-equipped sealing device has the slinger attached to either of two relatively rotating members and the lip seal attached to the other, the slinger has a magnetic encoder at one end face in the axial direction, the lip seal is formed by attaching a seal lip to an attachment ring and is slidably in contact with the slinger, an adhesion prevention projection, formed from a rubbery elastic body, is provided on the other end face in the axial direction of the attachment ring to prevent mutual adhesion of sealing devices when they are stacked, and the adhesion prevention projection ( | 01-14-2010 |
20100090411 | Sealing device - A sealing device for sealing a space between a rotary side member and a stationary side member which comprises a slinger with a specific structure is disclosed. The sealing device comprises a slinger fixedly fitted to a rotary side member, a core member fixedly fitted to a stationary side member, and an elastic sealing member fixed to the core member and having a seal lip which elastically and slidably contacts the slinger in which the slinger is characterized by comprising a fitting cylindrical portion to be fitted into said rotary side member, a brim portion extending its radial direction at one end of its outside relative to a sealed portion of the fitting cylindrical portion, and a rotary side fixing member fixed to the brim portion; and further characterized by being made in such a manner that an adhesive layer is formed on its whole surface including a contacting side surface where said seal lip contacts by applying adhesive agent thereon, then the fixing member is integrally fixed thereto, thereafter the adhesive layer is partially removed only in the contacting side surface. | 04-15-2010 |
20100187764 | SEAL CAVITY PROTECTION - A seal cavity throat bushing, for use with rotating fluid equipment having a seal cavity, is defined by a rotary shaft having an axis. The shaft housing surrounds at least a portion of the shaft and a sealing device engages the shaft and the housing at one end of the cavity. The bushing includes an annular element, which is adapted for a tight fit in a housing at the entrance to the cavity opposite the one end. The annular element has a radially outer cylindrical surface for contacting a cavity wall of the housing and a radially cylindrical surface having a diameter greater than that of the shaft to define a gap there-between. | 07-29-2010 |
20100276891 | COMBINATION SEAL - A combination seal is attached to a bearing comprising a fixed element and a rotating element which rotate relative to each other, so as to seal an inner side and an outer side of the bearing. The combination seal is comprised of a seal ring and a slinger. The seal ring is comprised of a reinforcing ring and an elastic seal supported by the reinforcing ring. A leading end side of the elastic seal, supported by the reinforcing ring extending toward the slinger, is brought into contact with a surface of the slinger, which is opposite to the seal ring, when the combination seal is attached to the bearing. During a combining work process, when combining the seal ring and the slinger to form the combination seal, a seal lip does not turn over and the seal lip can be held toward a predetermined direction without using a specific jig during the combining work process and without being particularly careful during performance of the combining work process. | 11-04-2010 |
20130127119 | SEALING ASSEMBLY FOR ROLLING BEARINGS - A sealing assembly for sealing a rolling bearing, between a first and a second bearing part, where the two bearing parts are rotatable relative to each other and form therebetween both an axial space and a radial space. The sealing assembly includes: A contact member having a mounting section for attachment and a ring-shaped contact section for positioning the contact member on the second bearing part, and a carrier mountable to the first bearing part and has an elastic member forming a first axial sealing lip and/or a radial sealing lip. The contact member and a radially extending portion of the second bearing part together form a first collecting channel, and that an opening leading into the first collecting channel should be at least partially defined by an end section of the contact member. | 05-23-2013 |
20140027984 | Abeyance Seal for High Temperature, High Pressure Applications - An abeyance seal includes a polymer actuation ring, which defines a flexible sealing lip normally spaced from the shaft. When subjected to leakage, this element collapses against the shaft and forms an initial sealing. Secondarily, a metal sealing/anti-extrusion ring provides a second seal during leakage. The polymer ring provides the initial sealing function during leakage at low differential pressure, and once the polymer ring seals to the shaft, increased sealed pressure loads the polymer ring against the metal sealing/anti-extrusion ring causing it to deform so that the metal ring comes into contact with the shaft to form a second seal. | 01-30-2014 |
20140300058 | SEALING OF TURBINE ENGINE ENCLOSURES PRODUCED BY BRUSH SEAL AND LABYRINTH - Sealing device for an enclosure (E | 10-09-2014 |
20150014937 | SEAL ASSEMBLY AND SHAFT THEREFOR - A fluid sealing assembly includes a shaft and a seal. The shaft includes a surface portion having a microstructural geometry. The seal has a radially flexible portion disposed in proximity to the surface portion having the microstructural geometry such that when the shaft is rotated a pressure differential is generated at the interface of the seal and the surface portion having the microstructural geometry that pushes or pulls fluid relative to the interface. | 01-15-2015 |
20150337961 | CASSETTE SEAL - A cassette seal having an internal ring with a cylindrical portion; a cover portion radially projecting from the cylindrical portion, and a covering portion axially projecting from the cover portion, wherein the covering portion is radially spaced from the cylindrical portion, and an external ring with axial flange, and a radial flange projecting in the internal ring direction, with a sealing body of an elastomeric material associated with the axial flange, wherein from the sealing body sealing lips are formed, wherein a first sealing lip with radial preload sealingly rests against the cylindrical portion's outer circumference, wherein a second sealing lip axially projects from the radial flange and extends in the direction of the covering portion's side facing the cylindrical portion, wherein a third sealing lip axially projects beyond the radial flange and on the outer circumference at least partly projects beyond the covering portion. | 11-26-2015 |
20160003302 | SEALING DEVICE - A sealing device configured to seal a gap on a flange portion side between an outer member and an inner member by being attached to the outer member. A circular plate portion of a metal ring has an extending portion extending opposite to a flange portion. A seal body has a projecting portion and a weir portion, the projecting portion being positioned inward in a diametrical direction from the extending portion and extending toward the flange portion, the weir portion being positioned outward in a diametrical direction from the extending portion and extending toward the flange portion. The projecting portion and the weir portion overlap the extending portion in a diametrical direction, the projecting portion and the weir portion being provided adjacent to the extending portion, thereby forming a labyrinth. The labyrinth has a plurality of labyrinth constituting portions folding back along inner and outer faces of the extending portion in a diametrical direction, and the labyrinth is configured to meander. | 01-07-2016 |
20160003357 | SEALING DEVICE - The invention provides a sealing device having a sliding lip and a labyrinth lip, wherein the sealing device can inhibit the lip from being deformed as the lip even if the labyrinth lip is exposed to the foreign material in the machine outside and is swollen, thereby making the sliding lip protecting function hard to be lost. In order to achieve the object, in a sealing device having a sliding lip which seals so as to prevent foreign material in a machine outside from entering into a machine inside, and a labyrinth lip which makes the foreign material hard to reach the sliding lip, a notch portion for absorbing swelling of the labyrinth lip when the labyrinth lip is exposed to the foreign material and is swollen is provided in a leading end portion of the labyrinth lip. | 01-07-2016 |
20160131257 | SEALING DEVICE - A sealing device which allows the man-hour for mounting the sealing device to be reduced is provided. A sealing device includes: a slinger fitted and fixed to an end portion of an inner shaft; a core metal fitted and fixed to an end portion of an outer ring; an inner seal lip fixed to the core metal and in slidable contact with the slinger; an outer seal lip fixed to the core metal radially outward of the inner seal lip and in slidable contact with a side surface of a flange portion; and a labyrinth lip fixed to the core metal radially outward of the outer seal lip and forming a labyrinth seal together with the side surface of the flange portion. | 05-12-2016 |
20160178010 | SEALING ARRANGEMENT FOR WHEEL BEARINGS HAVING A PRESTRESSED SPLASH PLATE | 06-23-2016 |
20160186815 | SEAL ARRANGEMENT HAVING A THROWER RING FOR AN ANTI-FRICTION BEARING - A seal arrangement ( | 06-30-2016 |
277352000 | Relatively rotatable radially extending contacting sealing members (e.g., face, mechanical, etc.) | 11 |
20090066032 | SLIDING RING SEAL - Device for sealing components which rotate at relatively high speeds, in particular construction machine axles, comprising a sliding ring seal which is formed from a sliding ring and a mating ring, in particular a running gear seal, wherein the sliding and mating rings have a sliding face which faces a rotating component, one of the rings is provided in the installed state on one side within a ring receptacle and on the other side in the region of the rotating component in a manner which is fixed in terms of rotation, and the other ring is arranged in a sealed form with respect to a surrounding stationary component. | 03-12-2009 |
20090127791 | SEAL ASSEMBLY FOR A ROTATING MEMBER - A seal assembly seals a gap between a fixed member and a rotating member housed therein, to prevent flow of oil from a first environment to a second environment of the gap. The assembly includes a first ring fitted to the rotating member, a second ring fitted to the fixed member, an elastically deformable seal attached to the second ring and comprising a first lip cooperating in a fluid-tight manner with a first mating portion of the first ring, and a spiral groove on the first lip to generate, during rotation of the rotating member, a fluid-dynamic pumping action to pump oil from a sealing area to the first environment. A second lip of the seal forms a contact seal with a second mating portion of the first ring when the rotating member is stopped, and a configuration detached from the second mating portion during rotation of the rotating member. | 05-21-2009 |
20090127792 | MECHANICAL SEAL - A mechanical seal includes an elastomeric member, a spring biasing device, a longitudinally floating first member, a longitudinally non-floating second member and a longitudinally floating seal face. The elastomeric member is in a sealing engagement with the seal face. The first and second members and the spring biasing device are longitudinally positioned between the seal face and the second member. The first member and the second member are longitudinally restrained and rotationally coupled by at least one substantially male radially protruding portion in one of the members engaging in at least one substantially female portion in the other member of the two members. The first and second members are arranged for a sealing engagement with the seal face in a single seal utilizing the elastomeric member, or with the seal face and an additional seal face in a double seal utilizing an additional elastomeric member. | 05-21-2009 |
20100117303 | MECHANICAL SEAL DEVICE - A mechanical seal device comprises an attachment component ( | 05-13-2010 |
20110133412 | SEAL ARRANGEMENT - A seal arrangement between two components moving relative to one another. The seal arrangement has a seal which is positioned by way of a seal back in an annular groove of a fixed rolling bearing ring. The seal has at least two elastic sealing lips, a first, radial scaling lip supported by a spring means and a second, axial sealing lip, which are each supported by at least one sealing edge directly or indirectly against a rotating centrifugal sleeve. An intermediate space defined by the sealing edges of the sealing lips is designed as lubricant reservoir. Alternatively or in addition, at least one sealing edge forms a lubricant reservoir in the area of a contact zone of the sealing edge against a support face of the centrifugal sleeve or offset in relation thereto. | 06-09-2011 |
20110309585 | SHAFT SEAL DEVICE - A shaft seal device that seals between the outer peripheral surface of a rotating shaft and a stationary member that is provided on the outer peripheral side of the rotating shaft, provided with a thin-plate seal that has a plurality of thin plates that are arranged in the circumferential direction of the rotating shaft and an abradable seal that is arranged at a position differing with the thin-plate seal in the axial direction, and having a free-cutting material that is disposed at either one of the rotating shaft and the stationary member, and a seal fin that projects toward the rotating shaft or stationary member from the other of the rotating shaft and the stationary member. | 12-22-2011 |
20130069316 | AXIAL SEAL STRUCTURE AND ROTATION MECHANISM PROVIDED WITH SAME - An axial seal structure includes a high-pressure-side regulating member ( | 03-21-2013 |
20140203513 | GEARBOX OUTPUT SEAL - A seal assembly for use in a gearbox has a rotating ring to be secured to a shaft, and having a contact face. The contact face abuts a stationary seal. The stationary seal has a retainer with a channel extending to a bottom. A floating seal portion is positioned within the retainer, with a spring positioned inward of an inner end of the floating seal portion, and biasing the floating seal portion outwardly. There is an inner bore of the retainer which is spaced from an outer periphery of the floating seal portion. One of the inner bore and the outer periphery presides with the plurality of radially located pins. The other of the inner bore and the outer periphery is formed with the plurality of recesses. The pins are received in the recesses, to prevent rotation of the floating seal portion within the retainer. | 07-24-2014 |
20140239597 | MAIN SEAL FOR A HEAVY-DUTY VEHICLE WHEEL END ASSEMBLY - A wheel end assembly for a heavy-duty vehicle includes an axle spindle and a hub rotatably mounted on the axle spindle. A main seal extends radially between the axle spindle and the hub. The seal includes a dynamic portion that seats in a bore formed in the wheel hub, and a static portion that seats on the axle spindle. The static portion includes a rigid carrier that in turn includes a first member, and a second member that is rigidly attached to the first member. An elastomer is bonded to the carrier member and forms a first external lip. The first external lip extends generally parallel to a chamfer formed in an inboard end of the hub. The first external lip, other external features, and internal features prevent contaminants from entering the wheel end assembly, retain lubricant in the assembly, and provide a dynamic expulsion surface to expel contaminants. | 08-28-2014 |
20150298750 | SEAL STRUCTURE OF CRAWLER-DRIVING APPARATUS - A seal structure is provided to block a clearance between a rotational casing and a fixed housing for driving a crawler of a crawler vehicle. A seal ring is held in a first annular holding groove provided in the fixed housing together with a first O-ring that biases the seal ring toward the outside of the first holding groove. A second holding groove having an opening facing the first holding groove is provided in the rotational casing to hold a slide ring having a higher rigidity than that of the seal ring together with a second O-ring that biases the slide ring toward the seal ring. A foreign object such as mud is thereby prevented from invading a gear chamber without increasing a frictional loss. | 10-22-2015 |
20160068204 | Sealing Lip and Seal Assembly for Track Pin Joint Assemblies - A seal assembly for use in sealing a joint having a first member pivotable about a rotational axis relative to a second member. The seal assembly may include a load ring engaged by the first member, a sealing lip engaging a sealing surface of the second member, and seal ring there between. The sealing lip may have a sealing lip body with a first convex rounded engagement portion of a second member engagement surface positioned to engage the sealing surface when the seal assembly is assembled in the axially-extending seal cavity between the first member and the second member. The second member engagement surface may include additional convex engagement portions, and the sealing lip may include a sealing lip flange extending radially outwardly from the sealing lip body and disposed proximate the sealing surface after assembly. | 03-10-2016 |
277353000 | And circumferential peripheral radially sealing flexible projection (e.g., lip seal, etc.) | 15 |
20080303221 | Mechanical Sealing Device - A mechanical sealing device comprises a stationary slide ring | 12-11-2008 |
20090020957 | Radial Shaft Sealing Ring - A radial shaft sealing ring, especially for use together with a CO | 01-22-2009 |
20090058009 | Anti-Dust Structure for a Sliding Block of a Linear Guideway - An anti-dust structure for a sliding block of a linear guideway comprises a sliding block, two end caps, plural rolling elements, a flexible anti-dust strip and a rail. The two end caps are assembled to both ends of the sliding block, the rolling elements are disposed on the rail. Between the end cap and the sliding block is defined a circulating path. The two end caps are each extended from an inner side thereof to form a linking portion, and the two linking portions of the two end caps are linked to each other to define an endless positioning groove including two longitudinal grooves and two transverse grooves. The flexible anti-dust strip is disposed in the positioning groove of the end caps and integrally formed with protruding lip portions for cooperating with the two longitudinal grooves. | 03-05-2009 |
20100066028 | CUP SEAL AND MASTER CYLINDER USING THE SAME - In a cup seal, the hydraulic pressure in a first hydraulic chamber ( | 03-18-2010 |
20100253005 | SEAL FOR OIL-FREE ROTARY DISPLACEMENT COMPRESSOR - Non-contacting cartridge shaft seals prevent leakage loss of process gases in an “oil free” rotary screw compressor or blower, while simultaneously preventing ingress of lubricating oil to the pumping chamber, allowing the compressor/blower to generate process pressure differentials without oil contamination. A compact unitized seal cartridge assembly is provided in the end plates of the pump housing. One of the rotor shafts extends through an aperture in the end plate or housing, between the pumping chamber and oil-lubricated gear/bearing cases. Internal elements have the ability to self-align radially achieving essential concentricity with shaft rotational axes. The rotor shafts or sleeves non-contact relationship during operation allow increased ranges of shaft rotational speeds. Air seal elements restrict flow of process air from the pumping or compression chamber, and oil seal elements with a directional spiral groove on the inside diameter prevent the leakage of lubricating oil to the process or atmosphere. | 10-07-2010 |
20110156358 | CARTRIDGE SEAL DEVICE - A cartridge seal device includes a sleeve, a gland unit, a first seal unit, a pumping ring, and a second seal unit. The gland unit includes a first gland and a second gland. The first seal unit includes a first rotary ring disposed around the sleeve and rotatable along with the sleeve, a first stationary ring abutting against the first rotary ring, a compression ring abutting against the first stationary ring, and at least one first spring disposed within a retaining slot of the first gland and abutting against the compression ring. The first stationary ring has one end in abutment with the first rotary ring, and an opposite end formed with at least one notch. The compression ring has aligned guide pieces extending respectively into the notch of the first stationary ring and an engaging recess of the first gland. | 06-30-2011 |
20120068416 | DYNAMIC RADIAL SHAFT SEAL ASSEMBLY WITH COMBINATION DUST EXCLUSION THRUST PAD - A dynamic radial shaft seal assembly includes an inner wear sleeve having a cylindrical inner wall with a bore sized for receipt about a shaft and an outer running surface. The inner wear sleeve has a flange extending radially outwardly from the running surface. The assembly further includes an outer case having cylindrical outer wall configured for receipt in a housing and a rim extending radially inwardly from the outer wall. An elastomeric body is attached to the rim. The elastomeric body includes a main seal lip configured to engage the outer running surface of the inner wear sleeve and a plurality of thrust pads extending axially from the rim for engagement with the flange. The thrust pads are spaced circumferentially from one another by gaps. The elastomeric body further includes a first dust exclusion lip extending axially from the leg and bridging the gaps. | 03-22-2012 |
20130119611 | PRESSURE BALANCED RADIAL ROTARY SHAFT SEAL - In combination with a body defining an annular space and a member received for rotation or linear movement within the annular space, an annular seal includes a first sealing member defining a first sealing portion disposed in constant engagement with a peripheral surface of the member during the rotation or the linear movement thereof, a second sealing member defining a second sealing portion disposed in constant engagement with the first sealing member and radially aligned only with the first sealing portion, and a fluid pressure directed at least onto the second sealing member, whereby the second sealing portion is configured to bias the first sealing portion into the constant engagement with the peripheral surface of the member. | 05-16-2013 |
20130234397 | SHAFT SEALING APPARATUS - Provided is a shaft sealing apparatus, which includes a seal ring that is installed in an annular space between a rotor and a stator surrounding an outer circumference side of the rotor, that is formed in a divided structure from a movable seal ring and a stationary seal ring whose circumferential ends are adjacent to each other, and that is configured so that the movable seal ring is biased toward a radial outer side thereof by an elastic body, a seal body that is formed by stacking a plurality of thin seal pieces, which extend from the seal ring toward a radial inner side of the rotor, in a circumferential direction of the rotor, and a communicating part that causes the low-pressure side region and the high-pressure side region to communicate with each other. | 09-12-2013 |
20130234398 | SEALING SYSTEM - A sealing system is provided which is intended to achieve an improvement in durability. A dust seal is composed of a first dust seal ( | 09-12-2013 |
20140097572 | Radial Shaft Seal Assembly With Snap In Auxillary Member - A shaft seal assembly includes a metal case having a wall extending cylindrically about a central axis with an annular leg extending radially inwardly from the wall toward the central axis. An elastomeric material is bonded to the leg and a primary seal lip is operably attached to the elastomeric material. The primary seal lip separates an oil side of the assembly from an air side of the seal assembly. The elastomer material has an annular groove formed on the air side of the primary seal lip. The assembly further includes an auxiliary lip subassembly including an annular metal washer with at least one auxiliary lip fixed thereto as a one-piece subassembly. The annular metal washer has an annular outer periphery snappingly received within the annular groove. | 04-10-2014 |
20140175752 | Dual Shaft Arrangement with Adjustable Axial Spacing and Improved Sealing Unit - The invention relates to a device having two rotational shafts which are arranged at least essentially parallel to each other and associated with rotational axes ( | 06-26-2014 |
20140203514 | Sealing Ring - A seal assembly having a sealing ring, including at least one dynamically stressed sealing lip ( | 07-24-2014 |
20140203515 | PRESSURE BALANCED RADIAL ROTARY SHAFT SEAL - In combination with a body defining an annular space and a member received for rotation or linear movement within the annular space, an annular seal arrangement includes a first sealing member defining a first sealing portion disposed in constant engagement with a peripheral surface of the member during the rotation or the linear movement thereof, a second sealing member defining a second sealing portion disposed in constant engagement with the first sealing member and radially aligned only with the first sealing portion, and a fluid pressure directed at least onto the second sealing member, whereby the second sealing portion is configured to bias the first sealing portion into the constant engagement with the peripheral surface of the member. | 07-24-2014 |
20140339775 | ENGINE REAR SEAL - In an engine rear seal installed to an engine rear portion having an end plate arranged in a motor exterior side of a housing, and a flywheel arranged in a motor exterior side of the end plate, the engine rear seal has an oil seal and a muddy water preventing seal. The muddy water preventing seal integrally has an attaching portion, and a seal lip directed to a diametrically outer side from the attaching portion and slidably coming into close contact with an end surface in the motor exterior side of the end plate. The seal lip has an inclined lip end back surface portion, and is structured such that a lip end comes into contact with the end surface at the low-speed rotating time and the lip end moves away from the end plate on the basis of an action of a centrifugal force at the high-speed rotating time. | 11-20-2014 |