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| Number | Title | Issue Date |
| 8136818 | Oil seal A seal lip of an oil seal is in slidable contact with a peripheral surface of a shaft. A lubricating oil supply section for collecting adhered oil and dropping it on the shaft is provided at a forward end portion of an installation section. The lubricating oil suppl... | 03/20/2012 |
| 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 |
| 7252291 | Mechanical seal having a single-piece, perforated mating ring A mechanical seal (e.g., single mechanical seals, double mechanical seals, tandem mechanical seals, bellows, pusher mechanical seals, and all types of rotating and reciprocating machines) with reduced contact surface temperature, reduced contact surface wear, or inc... | 08/07/2007 |
| 7249768 | Shaft seal assembly and method A pressure-actuated shaft seal assembly and associated method for controlling the flow of fluid adjacent a rotatable shaft are provided. The seal assembly includes one or more seal members that can be adjusted between open and closed positions, for example, accordin... | 07/31/2007 |
| 7178806 | Cinchpac self-loading rotary shaft seal A seal for a conveyor drive which has an elastomer which is compressed between a cap ring and a housing. ... | 02/20/2007 |
| 7134667 | Arrangement comprising a slinger associated with a shaft bearing and a gasket associated with a sealing gap A sealing arrangement for turbomachines with a shaft bearing, a throw-off ring and a shaft seal which is assigned to a sealing gap and has a seal housing wherein opposing faces of the throw-off ring and the seal housing form an annular gap for centrifuging out dirt ... | 11/14/2006 |
| 7086649 | Gasket with two concentric lips A gasket, sliding about the axis of rotation of a part to be brought closer to or to be spaced apart from another part with which it provides tightness through a pair of lips provided on a ring. The gasket includes a portion of the ring capable of bending to modify ... | 08/08/2006 |
| 7055827 | Non-contacting clearance seal for high misalignment applications An improved oil seal is provided for sealing passage of a rotatable shaft through an end wall of a bearing housing in a turbomachine or the like, wherein the shaft is rotatably supported within the bearing housing by oil-lubricated bearings. The improved oil seal co... | 06/06/2006 |
| 6932567 | Method and apparatus for controlling fluid leakage through gas turbine engines A method for controlling fluid leakage between a first pressure region and a second pressure region within a gas turbine engine using a first sealing member and a second sealing member. The first sealing member is movably coupled to a portion of the gas turbine engi... | 08/23/2005 |
| 6698762 | Rotary device shaft with oil slinger groove A lubricant leakage stop is provided on the shaft of a rotary device in the form of an annular groove in the shaft. In one embodiment the annular groove is formed with an annular inner surface at the bottom of the groove and with an annular intermediate s... | 03/02/2004 |
| 6688864 | Oil leak prevention structure of vacuum pump A vacuum pump draws gas by operating a gas conveying body in a pump chamber through rotation of a rotary shaft. The vacuum pump has an oil housing member. The oil housing member defines an oil zone adjacent to the pump chamber. The rotary shaft has a proj... | 02/10/2004 |
| 6629816 | Non-contacting clearance seal for high misalignment applications An improved oil seal is provided for sealing passage of a rotatable shaft through an end wall of a bearing housing in a turbomachine or the like, wherein the shaft is rotatably supported within the bearing housing by oil-lubricated bearings. The improved ... | 10/07/2003 |
| 6612583 | Bearing seal A bearing seal with a flat elastic sealing lip (2), positioned between an outer bearing ring (3) and an inner bearing ring (4) with an inner sealing edge (5), sliding circumferentially on the inner bearing ring (4). One surface of the sealing lip (2) faci... | 09/02/2003 |
| 6578850 | Dynamic seal for a drive shaft A dynamic seal for a drive shaft including a seal housing with at least one inlet for injecting a fluid, (i.e., a liquid or gas) into the seal. The seal also has an expeller device, such as an expeller ring mounted on the drive shaft, for expelling the in... | 06/17/2003 |
| 6513812 | Combined lip seal and turbine seal A novel sealing device is disclosed that provides an enhanced seal at the interface between a rotary shaft and a stationary housing for automotive applications such as transmissions and axle assemblies. The sealing device preferably includes a first seal ... | 02/04/2003 |
| 6343794 | Lubricant seal having partition plate with gutter for drive motor gears and the like A lubricant seal having no wearing surfaces is provided with a partition plate having a gutter portion and a slinger supported in a labyrinth cavity. This lubricant seal is particularly useful in larger seal applications where the wear of the rotating sha... | 02/05/2002 |
| 5979903 | Translucent slinger with centrifugal seal A slinger for use between a housing and a rotatable member passing therethrough includes an engaging member for mounting on the rotatable member, a slinger portion extending radially outward from the engaging portion, and a sealing portion generally axial... | 11/09/1999 |
| 5895052 | Shaft sealing device A device for sealing the annular gap between a housing and a shaft supported in the housing. The device comprises an inner ring, an outer ring, and an elastomeric sealing member joined to the outer ring. The sealing member has three sealing lips, of which... | 04/20/1999 |
| 5642888 | Temperature and pressure resistant rotating seal construction for a pump A seal construction is provided for sealing a rotating pump shaft against passage of a fluid along its central axis. The seal construction includes front and rear sealing flanges mounted coaxially to and rotatable with the pump shaft. Stationary engaging ... | 07/01/1997 |
| 5499902 | Environmentally safe pump including seal A motor driven environmentally safe pump includes a sealed motor housing (22) sealingly affixed to a sealed pump housing. The pump housing defines a fluid pumping chamber (43) in which is a fluid pumping impeller (46). A triplex rotating seal (31) is disp... | 03/19/1996 |
| 5482378 | Vacuum motor bering protection system A vacuum motor bearing protection system includes a barrier wall interposed between a motor assembly and a fan assembly. A shaft interconnecting the assemblies is rotatably received within a bearing received by the barrier wall. In order to prevent moistu... | 01/09/1996 |
| 5427500 | Slurry pump seal system A centrifugal pump assembly comprises a pump housing defining a pump cavity, a drive shaft rotatably mounted to the housing, an impeller rotatably disposed in the housing and operatively coupled to the drive shaft, and a shaft seal disposed between the sh... | 06/27/1995 |
| 5411366 | Motor driven environmentally safe pump A motor driven environmentally safe pump includes a sealed motor housing (22) sealingly affixed to a sealed pump housing. The pump housing defines a fluid pumping chamber (43) in which is a fluid pumping impeller (46). A triplex rotating seal (31) is disp... | 05/02/1995 |
| 5344163 | Dynamic shaft seal for pumping fibrous slurries A dynamic shaft seal for a fluid handling apparatus for pumping fibrous slurries, the fluid handling apparatus comprising an impeller mounted on a rotating shaft disposed in a pump housing, the shaft extending through an aperture extending from the pump h... | 09/06/1994 |
| 5219434 | Sealing arrangement for rotating propeller shafts of ships A seal arrangement for rotating shafts, in particular a propeller shaft of a ship which is in contact with water containing impurities, is designed to provide a filter portion substantially adjacent the outermost seal to thereby filter dirt particles out ... | 06/15/1993 |
| 5158304 | Captured rotor seal An improved seal is provided to minimize or eliminate lubricant migration and welling problems on electric motors, gear boxes, and lubricant contamination in rolling mills. The improved seal includes a stator ring fixed in the housing and a rotor ring sea... | 10/27/1992 |
| 5112142 | Hydrodynamic bearing A rotatable shaft/thrust plate combination is disposed within a sleeve to form a first clearance space between the shaft and the sleeve and a second clearance space between the thrust plate and the sleeve. The external faces of the thrust plate are expose... | 05/12/1992 |
| 5078410 | Centrifugal seal A sealing member for sealing between a rotating surface (12) and a stationary cylindrical surface (13). The sealing member (8) is sealing engaged to the rotating surface (12) and is so constructed that) at a rotational speed greater than a predetermined s... | 01/07/1992 |
| 5042822 | Seal with two sealing rings A seal for closing the radial space between two coaxial, radially spaced, relatively rotatable parts. Each of an axially inner and an axially outer sealing ring comprises an approximately L-shaped metal part having sealing lips of elastic plastic material... | 08/27/1991 |
| 5024451 | Multi-position labyrinth seal ring A labyrinth seal ring designed to function properly regardless of its rotational orientation relative to a horizontal shaft to be sealed. The novel seal ring bore is formed with a series of lands and grooves, with a plurality of axially extending drainage... | 06/18/1991 |
| 4986552 | Excluder type seal with sliding friction reducing feature A sealing assembly is adapted to be disposed between a stationary part and a rotary shaft in the stationary part so as to provide a seal in the gap between the stationary part and the rotary shaft. The sealing assembly has a slinger capable of rotating as... | 01/22/1991 |
| 4974860 | Sealing device A sealing device is adapted to be disposed between a stationary part and a rotary shaft in the stationary part so as provide a seal in the gap between the stationary part and the rotary shaft. The sealing device has a slinger secured to one of the station... | 12/04/1990 |
| 4962937 | Apparatus for deflecting fluids leaking around pump shafts In the representative embodiment of the apparatus of the invention disclosed herein, a circular fluid deflector with a central opening to receive a pump shaft is arranged with a flat transverse face for facing the seal in the pump housing through which th... | 10/16/1990 |
| 4928979 | Sealing apparatus A sealing apparatus has a main body which is mounted on a housing and is provided with a sealing lip, and a rotary body mounted on a rotary shaft of a member with which the apparatus is combined. The rotary body extends in the radial direction of the rota... | 05/29/1990 |
| 4927327 | Contactless centrifugal seal device for a rotating machine part Instead of labyrinth seals, ordinary circular cylindrical gaps (10, 18) are provided at the positions to be sealed in the contactless centrifugal seal device for, in particular, radial turbo-machines. By means of swirl fins (12) on shrouds (7) of the roto... | 05/22/1990 |
| 4915579 | Pump sealing apparatus A centrifugal pump of the hydraulic sealing type has a novel and improved sealing apparatus for establishing a hydraulic seal and limiting the flow of liquid from a pump casing into a reservoir or seal housing at one end of the pump casing, and a valve as... | 04/10/1990 |
| 4913450 | Seal The invention refers to a seal for bearing spaces, wall channels for shafts and the like, where the seal is fitted to the shaft. The seal is characterized in that it incorporates a sheet metal strutting projecting radially outwards, and on the side facing... | 04/03/1990 |
| 4906009 | Sealing apparatus A sealing apparatus has a main body which is mounted on a housing and is provided with a sealing lip, and a rotary body mounted on a rotary shaft of a member with which the apparatus is combined. The rotary body extends in the radial direction of the rota... | 03/06/1990 |
| 4884945 | Dynamic seal arrangement for impeller pump An impeller pump including a housing defining a seal cavity having a shaft rotatably mounted therein, and an expeller to pump fluid from the seal cavity. A dynamic seal provides a fluid tight seal between the housing and the shaft. The seal comprises an a... | 12/05/1989 |
| 4852890 | Rotary shaft bearing isolator seal A bearing isolator seal having a shaft seal assembly that includes a stator housing having an inner radially extending face with a pair of spaced concentric annular flanges of substantially frusto-conical shape extending from a larger diameter end that is... | 08/01/1989 |
