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| Number | Title | Issue Date |
| 8186687 | 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 al... | 05/29/2012 |
| 7334799 | Sealing device for a turbocharger A sealing device has a seal ring and a cylindrical bellows portion connected to the seal ring. The cylindrical bellows portion has a corrugated outer surface. A turbocharger utilizing the sealing device has a turbine wheel connected to a shaft and a compressor wheel... | 02/26/2008 |
| 7293778 | Systems and methods for sealing between stators and rotors A seal is used between a housing and a shaft having an axis. The seal includes a first portion and a second portion engageable with each other and movable relative to each other. The first portion and the second portion are configured to be received in a cavity betw... | 11/13/2007 |
| 7219898 | Spring supported dual element face seal with a run surface sleeve The invention provides a seal for a rotatable shaft. The seal includes an inner case mountable to the shaft and having a body and first and second flanges extending radially outward from the body. The seal includes first and second sealing discs operable to seal aga... | 05/22/2007 |
| 7210687 | Shaft seal assembly A primary technical goal of this shaft seal device is to decrease the pressure of a sealant at a communication passage between a fluid chamber and a first seal portion, to further reduce the pressure by a floating ring, to make the first seal portion pressure-proof ... | 05/01/2007 |
| 7121555 | Seal assembly and crawler-track connection structure A seal assembly has simple assembly structures, and provides secure sealing effects. A crawler-track connection structure allows the seal assembly to be easily mounted, and securely prevents overflow of a lubricant and the like to the outside. A pair of seal rings (... | 10/17/2006 |
| 7000712 | Bearing seal A seal assembly for a shaft supporting a rotary element comprises a sealing ring having an inner radial surface in contact with a seal surface of the shaft. The sealing ring comprising a disc shaped integral radial lip normal to the inner radial surface. A disc shap... | 02/21/2006 |
| 6962339 | Bellows type mechanical seal A sealing system for sealing one end of a rotating shaft from fluids. The sealing system includes a resilient bellows element connected at each end to a thrust plate. The bellows acts like a compression spring forcing the thrust plates against respective sealing ele... | 11/08/2005 |
| 6186509 | Rotary joint assembly A space between a housing and a rotator is hermetically sealed with a double-mechanical seal. A pair of rotary seal rings are sandwiched between a pair of stationary seal rings while sandwiching therebetween a stopper ring for inhibition of relative rotat... | 02/13/2001 |
| 5697620 | Seal assembly having first and second seals acting in series To provide a better seal for example in an indexing arm for a machine tool to prevent swarf getting to the rubber seal, an outer spring seal is provided. The seal takes the form a closely wound coil spring formed into a ring and positioned in a slightly e... | 12/16/1997 |
| 5251914 | Sealing assembly for relatively movable members A sealing assembly for relatively movable, e.g., rotating or reciprocating, members with a plurality of surfaces defining an annular space having a longitudinal axis, at temperatures up to about 1000° F., comprises first and second annular rings of a har... | 10/12/1993 |
| 4462600 | Rotary fluid seals A rotary fluid seal having a flexible sealing ring which floats between relatively rotatable counterface members and has contact faces which bear on the counterfaces under the influence of centrifugal force, such as forms the subject of U.S. Pat. No. 4,34... | 07/31/1984 |
| 4348031 | Rotary fluid seals with floating sealing rings A rotary fluid seal, especially an oil seal for a rotary shaft, comprises a sealing ring between axially-opposed divergent frusto-conical counterfaces of relatively rotatable members, preferably casing rings in a self-contained seal unit, the sealing ring... | 09/07/1982 |
| 4330134 | Torque limited track pin seal A seal unit having first and second members adapted to engage, respectively, first and second sealed parts, torsionally deflectable means joining the first and second members, with the first and second members respectively having cooperating means thereon... | 05/18/1982 |
| 4185841 | External swivel joint seal A rotary seal for a swivel joint is provided which is capable of standing substantially high internal pressure without leakage. Such swivel joints are widely used, for example, to prevent external leakage of products down the drain line in floating roof t... | 01/29/1980 |
| 4004855 | Articulated joint including seals maintained by wedge A first member is disposed between and pivotally connected to a pair of spaced apart parallel portions of a second member through means of a pivot pin extending through axially aligned holes respectively located in the first member and in the parallel por... | 01/25/1977 |
| 3967812 | Shaft seal for corrosion resistant butterfly valve A valve, such as a butterfly valve, having an offset closure vane supported on stub shafts for operating the vane in the flow passage of the body, has all exposed and/or potentially vulnerable metal surfaces encapsulated in a corrosion resistant polymeric... | 07/06/1976 |
