Class / Patent application number | Description | Number of patent applications / Date published |
277361000 | Multiple sealing faces (e.g., double seals, etc.) | 35 |
20080272551 | Sealing Device - In a sealing device of the present invention, a support ring ( | 11-06-2008 |
20090058011 | 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 projected outward 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 brought into elastically slidable contact with the extended end face of the slinger. | 03-05-2009 |
20090127793 | Upset resistant mechanical seal - A mechanical seal face has a significant increase in the ability of the seal to tolerate poor lubrication conditions such as dry running. The mechanical seal employs a thin, non-corrugated flat sheet of flexible thermally conductive graphite material placed between one of the mechanical seal faces and a metal surface such as a metal surface defined by a shaft sleeve or gland serving as a seal ring holder. The graphite sheet is located axially between a back face of the more thermally conductive mechanical seal ring and the metal face holder part. The conductive seal face material preferably is a ceramic or cermet material such as silicon carbide, tungsten carbide, silicon nitride, aluminum oxide, or a metallic material such as stainless steel. Fluid pressure and spring forces are used to create a compressive load between the seal face, graphite sheet, and metal part to maximize continuous contact between the opposed faces of these parts and the opposite sides of the graphite sheet, and heat buildup at contacting seal faces flows away therefrom to the metal part through the thermally conductive sheet. | 05-21-2009 |
20090134582 | Seal Assembly - A centrifugal pump seal assembly ( | 05-28-2009 |
20100066029 | SEALING DEVICE - To avoid interference of a side lip when plural sealing devices are piled up, a sealing device installed on one member of two members rotating relatively is constructed by combining a mounting ring fitted on the one member and a rubber-like elastic body attached on the mounting ring, and has a side lip formed by the elastic body, the mounting ring has a cylinder portion at a position fitted on the peripheral surface of the one member, the elastic body has a rubber step part provided at axially one side of the cylinder portion, the cylinder portion and the rubber step part have a positional relationship that the former of an upper sealing device is placed on the latter of the one sealing device when piled up, and the side lip of the one sealing device is dimensioned not to interfere with the upper sealing device even when they are in such a positional relationship. | 03-18-2010 |
20100164179 | SEAL STRUCTURE - A seal structure that achieves a thick abradable film, thereby improving sealing performance, is provided. A seal structure is provided with at least one fin that projects in a ring-shape from a circumferential surface of a rotating shaft and that is provided along an axial direction and a seal member having a ring-shaped sealing surface opposed to the fin, and on which an abradable layer is formed by thermally spraying abradable material onto the sealing surface, the seal structure is provided with tapered portions inclined in a radial direction at end portions of the sealing surface in the axial direction. | 07-01-2010 |
20100201074 | GAS SEAL FOR AEROSPACE ENGINES AND THE LIKE - A gas seal for aerospace engines has a stationary seal housing, a rotating seal plate mounted on the engine drive shaft and a carbon ring seal movably supported in the housing with a face which mates with the face of the seal plate to create a gas seal therebetween. A plurality of flexible pins have first ends supported on the housing and second ends slidably connected with the carbon ring seal to permit the latter to shift axially. A plurality of compression springs bias the two seal faces together. The housing has a first twist lock which selectively engages a second twist lock on the carbon ring seal to movably retain the latter in the housing. The second ends of the spring pins resiliently deflect during mutual rotation of the carbon ring seal and the housing to facilitate engagement and disengagement of the first and second twist locks. | 08-12-2010 |
20100270749 | MECHANICAL SEAL DEVICE AND TANDEM SEAL DEVICE - The present invention provides a mechanical seal device for obtaining appropriate sliding properties under any conditions, such as a pressure of seal is low or high. In the present invention, both first grooves | 10-28-2010 |
20100314837 | Lip Type End Face Sealing Device - A lip type end face sealing device having excellent sealability to different kinds of liquids on both sides in the axial direction and having excellent durability. A case is tight fitted to an inner peripheral face of a housing and includes case members. One pair of seal lips is integrally fitted to inner peripheral flange parts, positioned oppositely each other in the axial direction, and opened in a tapered shape. One pair of the seal lips is slidably contacted with flange parts of slingers tight fitted to an outer periphery of a rotary shaft. Pressure in seal internal spaces between the seal lips is released through a vent hole. | 12-16-2010 |
20110101617 | Double Mechanical Seal Device - The present invention provides a cartridge type double seal having a size small enough to be mounted on the outer surface of an apparatus without using a space in a stuffing box and without requiring any special design and modification. In a seal device ( | 05-05-2011 |
20120007316 | ANNULAR SEALING DEVICE - An annular sealing device having a core member and a seal lip member of elastic body fixed to the core member, adapted to be mounted between a metal outer member and an inner member with a flange portion in which the outer member and the inner member are concentrically provided and relatively rotate. The core member comprises a fitting cylindrical portion which is fitted to an inner circumferential portion of the outer member, an outward flange portion extending in centrifugal direction from one end of the fitting cylindrical portion, and including an abutment portion which directly contacts an end surface on the side of the flange portion of the outer member under fitted state, and an inward flange portion extending in centripetal direction from the other end of the fitting cylindrical portion. The seal lips member includes a lip base portion fixed to an area from an inner circumferential edge of the inward flange portion to an outer circumferential edge of the outward flange portion, and a plurality of annular lips to extend concentrically from the lip base portion. The annular lips include a plurality of axial lips which slidably contact the flange portion under elastically deformed state, an exterior lip formed at the radially outermost circumference so as to slidably contact or to be disposed close to the flange portion, and a gasket lip formed to project opposite to the flange portion on the radially outward side of the abutment portion and elastically contacting the end surface of the outer member along the axial direction under compressed state. | 01-12-2012 |
20120025473 | SHAFT SEALING APPARATUS - A shaft sealing apparatus of including a first mechanical seal having a mating ring disposed at the sealed fluid side and which rotates along with a shaft as the inner circumference side thereof is fixed to the shaft side, and a sealing ring disposed at the air side with respect to the mating ring and is slidable against the mating ring and which does not rotate along with the shaft. An annular space in which the sealed fluid exists is formed at the outer circumferential face side of the first mechanical seal. The shaft sealing apparatus further includes a protection cover disposed adjacent to the sealed fluid side of the seal cover in a state of being sealed with the seal cover and with the first mechanical seal respectively by an O-ring so as to suppress exposure of the seal cover to the sealed fluid. | 02-02-2012 |
20120217703 | Intershaft Seal System for Minimizing Pressure Induced Twist - An intershaft seal system capable of communicating a balanced pressure profile onto forward and aft faces along a piston ring is presented. Seal system includes forward and aft mating rings and a piston ring. Mating rings include a plurality of divergent flow grooves adjacent to the piston ring. Each divergent flow groove includes a pair of grooves which intersect at and are substantially symmetric about an apex. The piston ring includes channels which direct a fluid from a high pressure region upward, downward, or directly through the piston ring and onto the divergent flow grooves. The divergent flow grooves separate the fluid in a symmetrically divergent fashion prior to communication onto the piston ring. The divergent flow grooves communicate a substantially symmetric pressure force along the radial width of the piston ring so as to minimize twisting thereof, thus reducing wear along the piston ring and increasing seal life. | 08-30-2012 |
20120299247 | 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. | 11-29-2012 |
20130015624 | ROTARY SHAFT SEALAANM Fujii; NobukazuAACI WakayamaAACO JPAAGP Fujii; Nobukazu Wakayama JPAANM Oida; HironoriAACI WakayamaAACO JPAAGP Oida; Hironori Wakayama JP - In a rotary shaft seal configured such that first and second seal elements ( | 01-17-2013 |
20130285330 | SUBMERSIBLE MOTOR PUMP, MOTOR PUMP, AND TANDEM MECHANICAL SEAL - A submersible motor pump includes a water jacket having a circulation passage of a coolant, a centrifugal impeller for circulating the coolant, a suction passage configured to provide fluid communication between the circulation passage and a fluid inlet of the centrifugal impeller, and a discharge passage configured to provide fluid communication between a fluid outlet of the centrifugal impeller and the circulation passage. The discharge passage includes a heat-exchange passage formed by two wall surfaces, one of which is constituted by a member which contacts a liquid conveyed by a main impeller. The heat-exchange passage has a circular shape extending radially outwardly from the fluid outlet of the centrifugal impeller. The heat-exchange passage includes at least one axial passage section having a length component in an axial direction of the rotational shaft. | 10-31-2013 |
20130320628 | SLIDE RING SEAL - The invention relates to a slide ring seal, and in particular a running gear seal, including an angled slide ring and/or counter ring, the radial leg of which forms a sliding region, and the axial leg of which forms a. seating for a trapezoidal sealing element, which radially outside of the sliding region, is provided with a projection that at least partially overlaps the radial leg, forming a secondary seal, wherein at least in the region of the radial leg, the projection is provided with a profile, which is supported on the outer circumferential surface of the radial leg, forming anti-contamination lips in the installed state of the slide ring seal, and in particular running gear seal, that profile being supported on the outer circumferential surface of the radial leg When viewed in the axial direction. | 12-05-2013 |
20140035233 | MECHANICAL SEAL - A mechanical seal includes a rotation ring provided with a vertical surface which is vertical to a central axis line of the rotation ring. A tapered surface includes a diameter on an outer circumferential side which decreases away from the vertical surface. A plurality of split bodies are positioned by sandwiching an outer circumferential side of the rotation ring between a support member that supports a side of the vertical surface and a presser member that presses the tapered surface. An elastic member is disposed between the support member and the vertical surface, so that the vertical surface is supported through the elastic member. A tapered surface is pressed in direct surface contact with an inner circumferential tapered surface of the presser member. | 02-06-2014 |
20150115539 | SHAFT SEAL WITH LAMELLAE - The disclosure relates to an apparatus for sealing shafts, the apparatus comprising at least one device for positioning at least one first sealing means and a second sealing means on a shaft in a specified manner. At least the first sealing means has a partly elastic wall region for restricting a fluid passage out of a first region, in which a fluid is provided, into a second region, from which the shaft is sealed by the first region. The wall region forms an opening through which the shaft is guided, the diameter of the opening being variable dependent on the diameter of the shaft, and the second sealing means lies over the first sealing means so as to contact same at least in some regions in order to seal the fluid passage. | 04-30-2015 |
20150130141 | COMPONENT SEAL - A mechanical seal includes an elastomeric member, a spring biasing device, a longitudinally floating first member having a seal face, a longitudinally non-floating second member and a longitudinally floating third member. The elastomeric member is in sealing engagement with the first member, second member and third member and the spring biasing device is longitudinally positioned between the first member and the second member. One of either the first member or the second member is provided with at least one protruding male portion and the other member of either the first member or the second member is provided with corresponding female portion into which the male portion locates. | 05-14-2015 |
20150323078 | ROTATING MECHANICAL SEAL ARRANGEMENT WITH IMPROVED GAS SEPARATION - The invention relates to a rotating mechanical seal arrangement ( | 11-12-2015 |
20150362076 | SLIDE RING, A SHAFT, A MECHANICAL SEAL, A HOUSING AND A ROTOR FOR A FLOW MACHINE AND A FLOW MACHINE - A mechanical seal includes a pair of slide rings and a spring. Each slide ring has an outer circumferential surface, an inner circumferential surface and slide or seal surfaces at one axial end. Each pair of slide rings has a rotating slide ring and a stationary slide ring, the slide or seal surfaces of each pair of slide rings being in sliding and sealing contact with each other. The inner circumferential surface of one rotating slide ring includes a device to form lock the slide ring, by direct mechanical contact to a hub or a shaft of the flow machine and at least one sealing surface at a side of the device is configured to form lock, each of the slide rings, when assembled to the flow machine supported, in an axial direction by a seal ring to one of the hub and the shaft of the flow machine. | 12-17-2015 |
20160201804 | SEAL RING FOR HYDROGEN COOLED GENERATOR | 07-14-2016 |
277364000 | Concentric and radially spaced | 1 |
20080290606 | Mechanical Seal Assembly - A mechanical seal assembly has a housing fixedly secured on the shaft to be sealed. A slide ring is positive-lockingly connected to the housing. A counter ring interacts with the slide ring. The housing is frictionally connected to the shaft on a side of the slide ring facing away from the counter ring. A secondary seal is disposed in a cutout of the slide ring and secured by an axial securing element. | 11-27-2008 |
277365000 | Three or more | 2 |
20140232069 | MECHANICAL SEAL WITH A BALANCE SHIFT MECHANISM - An O-ring balance shift mechanism is provided in a dry lift-off face mechanical seal to maintain necessary hydraulic closing forces on the seal faces when pressurized from either the inside or outside diameter of the balance shift mechanism to shift the diameter balance of the seal rings radially under reversed pressure conditions. This mechanism includes a shift ring with two O-rings wherein the shift ring is H-shaped or S-shaped in two alternate embodiments. The O-rings are radially spaced from each other and move axially with the shift ring during reverse pressure conditions. | 08-21-2014 |
20140353921 | MECHANICAL SEAL SYSTEM - A mechanical seal system for a pump or other rotary shaft equipment has three, four, five or more mechanical seals installed in and about the seal chamber, replacing and improving upon the conventional or cartridge, single, double, dual or tandem mechanical seal arrangements. In embodiments, a plurality of barrier liquids and/or barrier gases are provided separately to the seal faces. | 12-04-2014 |
277366000 | Shaft mounted sealing face members biased axially away from each other | 2 |
20090121441 | DUAL CONFIGURATION SEAL ASSEMBLY FOR A ROTATIONAL ASSEMBLY - A seal assembly for a rotational assembly includes a first seal, a second seal and a crossover support. The crossover support includes a first geometry that interacts with the first seal and a second, different geometry that interacts with the second seal. | 05-14-2009 |
20120018956 | SEAL ASSEMBLY - A seal assembly is disclosed for use between a housing and a rotatable shaft protruding exteriorly from the housing, with the shat being journalled for rotation in an eccentric cartridge which in turn is rotatably adjustable. The seal assembly comprises a circular flinger mounted on the shaft for rotation therewith. The flinger has radially outwardly projecting flanges defining an axial space therebetween. A seal carrier surrounds the flinger and has axially spaced first and second inner rims projecting radially inwardly into the space between the flanges of the flinger. Ring seals are carried by the seal carriers. The inner rims are resiliently urged to maintain the ring seals in contact with the flinger flanges. | 01-26-2012 |
277367000 | Shaft mounted sealing face members biased axially towards each other | 2 |
20150069715 | Cartridgised Mixer Seal - A mechanical seal comprising;
| 03-12-2015 |
20190145521 | DOUBLE MECHANICAL SEAL, A STATIONARY SLIDE RING THEREOF AND A PUMP HOUSING IN A CENTRIFUGAL PUMP | 05-16-2019 |
277368000 | Housing mounted sealing face members biased axially away from each other | 2 |
20090008880 | INDUSTRIAL AUTOMATION INPUT OUTPUT MODULE WITH ELASTOMERIC SEALING - An industrial automation input output module is protected against ingress of water, oil, debris, dirt and other contaminants without use of a potting compound. An elastomeric main seal provides a fluid-tight connection between inter-fitted inner and outer housing members that define a housing of the module. The one-piece main seal includes an integral light pipe portion with at least one light pipe that communicates light from an LED or other light source to a visual indicator opening in the housing, and the light pipe portion is also sealed to the housing to prevent ingress of contaminants through the visual indicator opening. Connectors pass through a wall of the housing and connector seals are used to prevent ingress of contaminants between the connectors and the housing. The connectors are also secured against rotation relative to the housing. | 01-08-2009 |
20090026710 | Slide Ring Seal - A shaft extending along and rotatable about an axis and a housing surrounding a portion of the shaft are provided with a seal assembly having an inner ring fixed on and rotatable with the shaft and having a pair of axially oppositely directed outer faces and a pair of outer slide rings axially flanking the inner ring and having inner faces axially sealed on the inner-ring outer faces. The outer rings, the housing, and the inner ring form an annular housing compartment surrounding the shaft. A blocking compartment on the housing is separate from the housing compartment. The inner ring is formed with a radially throughgoing passage having an inner end open on the shaft and an outer end open into the housing compartment. The housing is formed with a bore between the housing compartment and blocking compartment. | 01-29-2009 |
277369000 | Housing mounted sealing face members biased axially towards each other | 3 |
20090134583 | Dual seal assembly - The present invention discloses a dual seal assembly, in particular for sealing a gas compressor, comprising a first mechanical seal assembly ( | 05-28-2009 |
20090134584 | Mechanical seal assembly - The invention refers to a mechanical seal assembly comprising at least one pair of co-operating seal rings ( | 05-28-2009 |
20120001394 | Mechanical Seal Device - Provided is a mechanical sealing device which is simply configured and wherein a rotation ring can be stably held in a specified axial position, and warping of the sealed surfaces can be prevented, thereby making it possible to obtain appropriate sealing characteristics. In a mechanical sealing device, a rotation ring is axially held between a rotation ring locking surface of a sleeve and a rotation ring locking surface of a collar. Furthermore, the sleeve, the rotation ring fixing collar, and the rotation ring are integrated together by means of a baffle knock pin for the rotation ring. Due to the above, whether positive pressure or negative pressure is applied, the rotation ring does not move, nor do the sealed surfaces of the rotation ring become warped. Moreover, assembly can be simply performed only by means of the knock pin. | 01-05-2012 |