Class / Patent application number | Description | Number of patent applications / Date published |
277309000 | Peripheral radially sealing flexible projection (e.g., lip, piston cup seal, etc.) | 25 |
20080290601 | Asymetrical K-Ring - A system and method for an asymmetric K-ring is disclosed. The system and method is for forming a K-ring with the dynamic sealing surface ( | 11-27-2008 |
20080315527 | Sealing arrangement, sealing ring and use thereof - A sealing arrangement is provided, including a sealing ring for sealing two machine elements from one another, the sealing ring being configured in an installation space for the second machine element that is open toward the first machine element to be sealed, and sealingly contacting the surface to be sealed of the first machine element, by way of at least one dynamically loaded first sealing lip. The sealing ring is arranged under elastic axial and radial preloading within the installation space. | 12-25-2008 |
20090014962 | MULTI-LAYERED SEAL - A seal for static and dynamic sealing of a space between two surfaces. The seal includes a radial inner end defining a radial inner surface, a radial outer end defining a radial outer surface, a first axial end face, and a second axial end face, the radial inner end having a width narrower than the width of the radial outer end. The seal may have an annular recess extending around the circumference of the seal. When the radial inner surface is disposed about first surface, the seal is rollable about an edge of the radial inner end such that one of the first axial end face and the second axial end face is disposed against the first surface, and the opposite axial end face is oriented toward and compressible against the second surface. | 01-15-2009 |
20090218770 | DYNAMIC SEALING - A dual seal accommodates radial and axial movement, and accommodates positive and negative pressure differentials, when in sealing engagement about a rotating shaft. | 09-03-2009 |
20090289418 | ROTARY SEALS - Seal assemblies are herein discussed. The seal assemblies can have a stiff backing ring supporting a seal ring, which is positioned adjacent an inner seal ring. In preferred embodiments, the inner seal ring is made from a material that enables the inner seal ring to absorb media particles in situ to change its particle density. This allows the seal assembly to form wearable surfaces on the fly to decrease wear on the seal ring. | 11-26-2009 |
20090315266 | Extrusion-Resistant Nose Seal - A nose seal for forming a fluid seal with a sealing surface in a bore The nose seal is particularly suitable for use in high pressure and high temperature conditions. The nose seal includes a substantially deformable sealing ring, which can form a resilient fluid seal with the sealing surface, and a substantially rigid ring, which prevents or limits extrusion of the substantially deformable sealing ring in high temperature and/or high pressure environments. | 12-24-2009 |
20100059937 | SEAL ASSEMBLY - A seal assembly, includes a seal element including at least one seal lip, a wiper element including a wiper lip, and a structural element attached to the seal element and the wiper element, the seal assembly being configured for functioning under pressure in an amount greater than 500 pounds per square inch. | 03-11-2010 |
20100059938 | HIGH SPEED FLYWHEEL SEAL - A seal for a high speed flywheel mounted on a shaft and comprising an evacuated core, the seal having two housing sections, and a cavity formed between the housing sections, lip seals being provided on either side of the cavity, the lip seals being in contact with and encircling the shaft, wherein an oil based fluid can be inserted into the cavity via a fill nipple, and during insertion of the fluid, air can be expelled from the cavity via a bleed nipple, whereby the fluid can form a hermetical seal against the shaft, and wherein the fluid inserted into the cavity does not vaporize at the pressure of the evacuated flywheel core. | 03-11-2010 |
20100289224 | MECHANISM FOR ADJUSTING THE CIRCUMFERENCE OF SCRAPER CUPS OR DISCS - A sealing element for a pipeline pig includes rigid first and second cup supports having outer peripheral edges. A resilient sealing element protrudes beyond the outer peripheral edge of each of the first cup support and the second cup support. Means are provided for clamping the sealing element between the first cup support and the second cup support. | 11-18-2010 |
20110163506 | Turbine Seal Plate Assembly - A seal plate assembly for use with a rotor wheel assembly of a turbine engine. The seal plate assembly may include a seal plate positioned about a rim of a rotor wheel. The seal plate may include a number of seal plate segments and a number of locking pins extending through the seal plate segments and into the rim of the rotor wheel. | 07-07-2011 |
20110215530 | Low and Reverse Pressure Application Hydrodynamic Pressurizing Seals - The present invention relates to circumferential seal ring segments positioned around a rotating shaft so as to prevent fluids from leaking from a lubricant sump during both low and high pressure conditions. The circumferential seal is comprised of a plurality of adjoining annular ring segments facing the rotating shaft. Each sealing ring segment includes a dead end circumferential groove on a shaft-side face of each sealing ring such that, when the segments are joined, the circumferential dead end groove of each segment extends arcuately in the direction of shaft rotation. At least one additional groove is contained on the shaft-side face of each sealing ring segment. Each additional groove may contain a pocket. The additional groove(s) directs and creates pressurized air within the dead end circumferential groove, either directly or indirectly maintaining a seal between the ring segments and the shaft. A bleed hole may also be provided to create a seal between each sealing segment. | 09-08-2011 |
20120223484 | Sealing Device - A sealing device which comprises a slinger fixedly fitted to the rotary side member, a core member fixedly fitted to the 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. The slinger comprises a fitting cylindrical portion to be fitted into the 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. Further, the slinger is made in such a manner that an adhesive layer is formed on its whole surface including a contacting side surface where the 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. | 09-06-2012 |
20120228829 | RADIAL SHAFT SEAL, RADIAL SHAFT SEAL ASSEMBLY AND METHOD OF INSTALLATION - A radial shaft seal configured for receipt in a housing and about a shaft to sealingly isolate an air side of the seal from an oil side of the seal is provided. The seal includes a mounting portion and a seal lip having a sealing surface extending between an oil side end and a free air side end. An annular bridge is connected to the oil side end of the seal lip by a first hinge and to the mounting portion by a second hinge. The bridge extends in radially overlying relation to the seal lip. A projection extends from the first hinge away from the bridge. A plurality of ribs extend radially inwardly from the projection. The ribs minimize friction between the seal and the shaft during installation and prevent the seal lip from inverting during the oil-side installation assembly. | 09-13-2012 |
20120242044 | DYNAMIC SEALING - A dual seal accommodates radial and axial movement, and accommodates positive and negative pressure differentials, when in sealing engagement about a rotating shaft. | 09-27-2012 |
20130127118 | RADIAL SHAFT SEAL, RADIAL SHAFT SEAL ASSEMBLY AND METHOD OF INSTALLATION - A radial shaft seal to isolate an air side of the seal from an oil side of the seal is provided. The seal includes a mounting portion and a seal lip having a sealing surface extending between an oil side end and an air side end. An annular bridge is connected to the oil side end by a first hinge and to the mounting portion by a second hinge. The bridge extends in overlying relation to the seal lip. A projection extends from the first hinge away from the bridge. A plurality of ribs extend radially inwardly from the projection. A plurality of nubs extend axially from the oil side end of the seal lip toward the oil side of the shaft seal. The ribs and nubs minimize friction between the seal and a shaft during installation and prevent the seal lip from inverting during an oil-side installation assembly. | 05-23-2013 |
20130300065 | SEAL ARRANGEMENT FOR A PROPELLER SHAFT AND METHOD FOR SEALING A PROPELLER SHAFT - The present disclosure relates to sealing the propeller shaft of a ship using a sealing having a group of lip seals arranged consecutively in a direction of the propeller shaft so that a seal chamber is created between adjacent lip seals. The pressure of the first seal chamber on the propeller side can be close to the pressure of the surrounding water at the propeller shaft level, and the pressure of the second seal chamber furthest from the propeller can be adjusted to a fixed value that is lower than the pressure of the first seal chamber. The pressure of a third chamber located between the first chamber and the second chamber can be adjustable by pressure regulation devices to a value between the pressure values of the first and the second chambers by adjusting the pressure loss caused by the flow of a liquid medium. | 11-14-2013 |
20130313782 | SEAL AND METHOD OF FORMING A SEAL - A method of forming a seal for effecting a seal between two, coaxial, relatively rotating components is provided. The seal has an annular pack of elongate flexible members. The pack is mountable to a first one of the components at the root portions of the flexible members and extending towards the other component. End portions of the flexible members are presented for wiping contact with the other component. The method includes the steps of: (i) forming a plurality of pack segments, wherein each segment contains a respective subset of the flexible members of the annular pack, and wherein the end portions of the flexible members of each subset, when viewed in the axial direction of the seal, lie on a straight line; and (ii) assembling the pack segments in a substantially circular pack holder such that each pack segment forms a respective angular sector of the annular pack. | 11-28-2013 |
20140175748 | SEAL AND METHOD FOR MANUFACTURING THEREOF - A seal includes a sealing lip having a sealing region with a pumping structure that can abut on a first component. The pumping structure causes a liquid medium to move in a direction from a first axial side of the seal towards or to a second axial side of the seal when the first component rotates relative to a second component. The pumping structure includes at least one pumping groove that extends along a direction of extension and at least one retaining structure disposed in the at least one pumping groove. The at least one retaining structure reduces a cross-section of the at least one pumping groove, in at least one direction perpendicular to the direction of extension, to a value of between 50% and 90% of an extension of the cross-section of the pumping groove outside the at least one retaining structure along the at least one direction. | 06-26-2014 |
20140265139 | HIGH PRESSURE LIP SEALS WITH ANTI-EXTRUSION AND ANTI-GALLING PROPERTIES AND RELATED METHODS - Sealing assemblies to provide sealing between a shaft and a housing comprising a sealing component comprising a body section as well as an outer flange and an inner flange both extending from said body section; a supporting component receiving said sealing component and comprising a relatively thick inner arm projecting into said sealing component and providing a supporting area spanning an inner portion of said body section and a portion of said inner flange; an anti-extrusion component engaged with said relatively thick inner arm; the minimum clearance between said anti-extrusion component and said shaft being less than the minimum clearance between said relatively thick inner arm and said shaft; said inner flange comprising a sealing area; wherein said sealing assembly is to be received in a cavity in said housing or on said shaft. | 09-18-2014 |
20140319773 | ROTARY SEAL DEVICE - A shaft sealing assembly for creating a seal between a shaft and a stationary housing comprising: the shaft sealing assembly including a case and a sealing assembly within the case; the case having an inner seal surface diameter within which the shaft is located and within which the sealing assembly located; the case having an outside diameter which may be engaged to the stationary housing; the sealing assembly having an inner seal circumferential surface and an outer seal circumferential surface with the inner seal circumferential surface being engaged to a circumferential surface of the shaft, wherein the sealing assembly remains stationary on the shaft and the outer seal circumferential surface being slidably engaged to the inner seal surface diameter of the case. | 10-30-2014 |
20140353915 | SEALING ARRANGMENT AND METHOD FOR THE PRODUCTION THEREOF - A seal arrangement includes two machine components which are arranged so as to be able to be moved relative to each other along/about a movement axis, and having at least one resiliently deformable seal which is retained in a press-fitting manner on a seal retention structure on one of the two machine components. The seal forms a sliding guide for the two machine components, and has at least one sealing lip which is in sealing abutment with the other machine component in each case and which extends in an axial direction away from the seal retention structure. A free end portion of the sealing lip is supported by means of at least one resiliently deformable pretensioning element on one machine component in such a manner that the free end portion is in abutment with the other machine component with a defined contact pressure. | 12-04-2014 |
20150061227 | ELASTIC SEALS WITH DYNAMIC LIPS AND RELATED METHODS - Seal assemblies and methods that include a seal lip that comprises an extended portion with generally constant cross-sectional width for low and generally constant friction during wear are described. The seal lip is loaded against a dynamic member by the aid of a spring energizer. The extended portion of the seal lip maintains constant torque resistance during movement of the dynamic member. | 03-05-2015 |
20150069713 | PUMPING SEAL HAVING PROJECTIONS FOR AXIALLY POSITIONING A BIASING MEMBER - A seal assembly is for sealing between a housing and a rotary shaft includes an annular sealing member coupled with the housing and having inner and outer circumferential surfaces and a plurality of projections extending radially from the outer surface and spaced circumferentially about a central axis. Each projection has first and second axial ends and the plurality of projections define first and second projections. An annular biasing member is disposed about the sealing member outer surface and exerts an inwardly directed force on the sealing member. The biasing member has first and second ends and is arranged on the sealing member with the biasing member first end contacting the second end of each first projection and the biasing member second end contacting the first end of each second projection. As such, the biasing member extends axially and circumferentially between the first and second projections. | 03-12-2015 |
20150145216 | VARIABLE STIFFNESS COMPLIANT PLATE SEAL - A compliant plate seal assembly for a turbo machine includes a rotor and a stationary component. A plurality of compliant plates are coupled circumferentially to the stationary component. A natural frequency of each compliant plate varies from a natural frequency of adjacent compliant plates and/or gaps between adjacent plates to produce a zero-oscillation state between adjacent compliant plates in flow. | 05-28-2015 |
20160047473 | CANTED COIL SPRINGS FILLED WITH ELASTIC MATERIALS AND RELATED METHODS - A canted coil spring assembly is disclosed having a plurality of coils and a filler material placed within the coils and in the direction of a centerline that goes through the coils. The plurality of coils have a loading direction that is generally perpendicular to a tangent of the centerline of the coils wherein a load is applied in such direction and causes the coils to deflect generally independently of adjacent coils. | 02-18-2016 |