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| Number | Title | Issue Date |
| 8123229 | Lip type seal A resin lip type seal has first and second inner peripheral seal lips and an outer peripheral seal lip slidably contacting an operation member and a fixed member. The second inner peripheral seal lip is formed in a plate-shape to extend obliquely in an inner periphe... | 02/28/2012 |
| 7464941 | Sealing mechanism for sealing a vacuum chamber A sealing mechanism comprises a support member forming part of the semiconductor producing apparatus which has a vacuum chamber, a rotation shaft rotatably received in the support member, and at least three seal rings axially spaced apart from each other between the... | 12/16/2008 |
| 7396016 | Sealing device A sealing device includes an inner race, an outer race capped on and rotatable relatively to the inner race, a rubber oil seal mounted between the inner race and the outer race, a lubricating oil received between the inner race and the outer race, radiation holes fo... | 07/08/2008 |
| 7347424 | Shaft seal having integrated removal feature A dynamic shaft seal assembly has inner and outer cases that are clamped together to secure a seal element therebetween for dynamic sealing about a rotatable shaft. The inner case is formed with integral pull tabs that are engageable by a seal removal tool to facili... | 03/25/2008 |
| 7341258 | Cammed seal assembly with sealing ring having an angled leg portion and foot portion with elastomeric energizer element A seal assembly seals first and second operational surfaces spaced apart by a gap. The first surface includes a seal groove having a base surface and first and second side surfaces. A sealing element in the seal groove has a foot portion extending parallel to the ba... | 03/11/2008 |
| 7246800 | Sealing mechanism for sealing a vacuum chamber A sealing mechanism comprises a support member forming part of the semiconductor producing apparatus which has a vacuum chamber, a rotation shaft rotatably received in the support member, and at least three seal rings axially spaced apart from each other between the... | 07/24/2007 |
| 7229102 | Fluid coolant union A coolant union includes a seal assembly having a first seal member and a non-rotating second seal member. At least one of the annular sealing surfaces presented by the rotating seal member and the non-rotating seal member is chamfered such that the chamfered sealin... | 06/12/2007 |
| 7168361 | High pressure pump piston A high pressure piston for use within a liner for a reciprocating pump comprises an elastomeric seal and an annular bearing ring. During the pump's pressure stroke at least a portion of the bearing ring elastically expands radially to narrow or close the extrusion g... | 01/30/2007 |
| 7159857 | Multi spring ring A mechanical spring energized sealing device comprising in combination an elastomeric jacket and variety of resilient metallic springs inserted inside one uniform jacket casing, there are variety of energizer springs which are used for different needs in marketplace... | 01/09/2007 |
| 7125020 | Vented high pressure shaft seal A rotary fluid pressure device (11) having a housing (13,31), inlet and outlet ports (21,23), a gerotor gear set (15), a valve member (51) and an input-output shaft (49). A seal assembly (73) is disposed radially betw... | 10/24/2006 |
| 7118114 | Dynamic sealing arrangement for movable shaft A dynamic sealing arrangement for preventing leakage of a fluid along a shaft includes multiple seals and pressurized barrier sealant. According to one aspect, at least three seals are arranged along the shaft with pressurized barrier sealant between the first and s... | 10/10/2006 |
| 7100924 | Elastomeric hinged seal A hydrodynamic PTFE seal for a rotating part including a first portion supported by a flexible, elastomeric member and a second portion extending from the first portion past the elastomeric member along the rotating part. The second or trailing portion of the seal i... | 09/05/2006 |
| 7097179 | Apparatus and method for manufacturing rubber-wrapped spiral wound gaskets A spiral wound gasket made of an elongate band with a portion of the elongate band jacketed by a resilient filler material, the jacketed elongate band wrapped in a plurality of overlapping turns to define a radially thick reinforcing member with the band in each tur... | 08/29/2006 |
| 7090223 | Shaft sealing module for sealing vacuum chambers A shaft sealing module is proposed for sealing a shaft which extends driving rotationally from a normal pressure chamber into a high vacuum chamber. It is essential for the shaft sealing module according to the invention that the dynamic seal of the shaft takes plac... | 08/15/2006 |
| 7090222 | Shaft sealing assembly for vacuum processing apparatus Herein disclosed is a shaft sealing apparatus which comprises a vacuum casing formed with a vacuum chamber, a driving shaft having an outer cylindrical surface and movably extending in the vacuum chamber of the vacuum casing, and a sealing ring in the form of an ann... | 08/15/2006 |
| 7083170 | Rod or piston primary seal A rod or piston primary seal, which includes a primary seal (2) facing the space (1) to be sealed and a secondary seal (3) facing away from it, in which the primary seal (2) is fitted into the groove (4), of a holding element (5... | 08/01/2006 |
| 7076834 | Cabinet door buffer bar A cabinet door buffer bar includes a hollow tube, a shaft, an elastic element and a sliding member. The sliding member and the inner wall of the hollow tube form different intervals there between so that a resilient member mounted thereon receives varying constraint... | 07/18/2006 |
| 7004474 | Seal for an endless track A seal for an endless track has a cross section having a centerline parallel to an axis of the seal and a configuration symmetric with respect to the centerline of the cross section. The seal can include an elastically deformably configured portion having a cross se... | 02/28/2006 |
| 6978712 | Variable displacement piston type pump A method of providing variable pumping rate from a piston type pump at a constant drive speed, comprising providing a connecting rod connected to the throw of a crankshaft on one end and to a connecting pin on the other end, constraining said connecting pin to move ... | 12/27/2005 |
| 6957605 | High pressure pump piston A high pressure piston for use within a liner for a reciprocating pump comprises an elastomeric seal and a metallic annular bearing ring having relatively high heat conductivity compared to the liner and seal. During the pump's pressure stroke a portion of the beari... | 10/25/2005 |
| 6951319 | Flexible hydraulic latch A latching system includes a flexible hydraulic latch male portion, and a receiving rail female portion. The receiving rail female portion receives the hydraulic latch male portion therein. The latching system includes a hydraulic system for providing hydraulic flui... | 10/04/2005 |
| 6932350 | Windback labyrinth seal that accommodates a pressure differential for rotating shafts A segmented labyrinth seal (10) having a windback configuration formed around a rotatable shaft for preventing leakage of oil from a bearing housing having a first face (22) and a second face (23). An exterior cylindrical surface (19) and... | 08/23/2005 |
| 6926285 | Jacketed spiral wound gasket A spiral wound gasket made of an elongate band jacketed by a sealing material, with the elongate band wrapped in overlapping turns to define a radially thick gasket with an inner diameter for being exposed to a material to be sealed and an outer diameter, in which t... | 08/09/2005 |
| 6896269 | Reverse pressure actuated seal A seal for a hydraulic cylinder rod is provided. The seal includes a main body that defines an opening therein. The seal includes an inner surface and an outer surface. A first radial face having a generally planar surface extends from the inner surface to the outer... | 05/24/2005 |
| 6886834 | Shaft sealing assembly A shaft sealing assembly seals a rotary shaft of a refrigerant compressor with a first sealing member, which is a lip seal. The first sealing member has a hollow portion. As the pressure in the interior space of the compressor housing increases, an outer wall surrou... | 05/03/2005 |
| 6857637 | Rotation shaft seal A rotation shaft seal disposed between a housing and a rotation shaft, and provided with a seal member of rubber having a lip end portion which extends as to diminish in diameter to a fluid storing chamber side, wherein the lip end portion has a contact portion whic... | 02/22/2005 |
| 6769500 | Optimized earth boring seal means A rock bit seal in which the shape of the retainer lip (which restrains the seal from axial motion in response to pressure differentials) is optimized, with respect to the as-deformed shape of the seal in place, to achieve a preload stress which is everywhere nonzer... | 08/03/2004 |
| 6688604 | Sealing mechanism for sealing a vacuum chamber A sealing mechanism comprises a support member forming part of the semiconductor producing apparatus which has a vacuum chamber, a rotation shaft rotatably received in the support member, and at least three seal rings axially spaced apart from each other ... | 02/10/2004 |
| 6595524 | Pressure regulating buffer seal A buffer seal adapted for use in a seal assembly including at least a primary seal, the seal assembly being adapted to provide a fluid seal between two relatively moving machine elements, such as a piston or rod of a first machine element moving within a ... | 07/22/2003 |
| 6543784 | Wear compensating plunger-and-barrel seal for hydraulic fuel injectors In a fuel injector having a plunger-and-barrel pumping assembly, a sealing member is mounted within an annulus of a plunger to prevent the dilution of pressurized fuel within the barrel of the tool. The sealing member includes a hollowed cavity which trap... | 04/08/2003 |
| 6494465 | Seals for hydraulic assemblies A seal for hydraulic assemblies operating at high temperatures having adaptations (19, 20, 49, 50) for low pressures sealing and configured to move across the gap to be sealed at higher pressures with an angled base on a slope (23, 44) or a cup shape (73,... | 12/17/2002 |
| 6431552 | Rotary shaft sealing system A rotary shaft sealing system comprising a rotary lip seal and its associated retention gland, wherein the each of the seal and the gland are complimentary of the other within the environment of use. The system is particularly adapted for the sealing of a... | 08/13/2002 |
| 6296255 | Sealing mechanism for sealing a vacuum chamber A sealing mechanism comprises a support member forming part of the semiconductor producing apparatus which has a vacuum chamber, a rotation shaft rotatably received in the support member, and at least three seal rings axially spaced apart from each other ... | 10/02/2001 |
| 6290235 | Sealing system for a reciprocating shaft Fluid sealing system for installation within an assembly including a stationary machine part having a generally annular surface, and a reciprocable machine part having a generally cylindrical surface disposed concentrically with the annular surface of the... | 09/18/2001 |
| 6234540 | Sealing arrangement A sealing arrangement (6, 20, 37) to be positioned between two adjacent members (2, 3; 12, 13; 26, 27) between which a fluid cavity (4) is defined. Such a sealing arrangement is by example used in a swivel structure. If the exerted pressure is considerabl... | 05/22/2001 |
| 6139290 | Method to seal a planetary rotor engine Methods of sealing a planetary rotor engine, and the resulting seals, are described which improve the engine's efficiency and solves each of three main problem areas. A first method and resulting dynamic seal for sealing the rotor face surfaces as they tr... | 10/31/2000 |
| 6003848 | Compact gas spring A gas spring with a sealing and bearing assembly received within a casing of the gas spring adjacent to a rod slidably received through the assembly for axial reciprocation. The assembly has an annular retaining ring received within the casing, an annular... | 12/21/1999 |
| 6004249 | Slide disc seal arrangement for a roll of a paper making or finishing machine or the like A slide disc seal for use in a roll of a paper or board making machine or finishing apparatus, which roll comprises a stationary axle (1) and a rotatable shell (2) with an end element (8) at each end and bearing elements (3) at each end of the roll. The s... | 12/21/1999 |
| 5865442 | Lip-like seal A piston seal has formed on one side of the piston body upon which oil pressure works are a tapered surface portion which extends in a direction away from a piston sliding wall and a parallel surface portion. A lip-like seal is formed of a seal base porti... | 02/02/1999 |
| 5462289 | Sealing arrangement at lead-through shafts A hygienic sealing arrangement for a leadthrough shaft passing through a cover (4) for use in the food industry or the like in which an outer seal ring (1) and an inner seal ring (2) are bonded to the cover (4) by vulcanization. Upon assembly, the side of... | 10/31/1995 |
