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| Number | Title | Issue Date |
| 7905496 | Bearing protector for axial shaft movement A seal device, which accommodates axial displacement between a housing and shaft of an item of rotating equipment, includes a stator which locates into the housing of a piece of rotating equipment. A first rotor locates on the shaft of the rotating equipment and a s... | 03/15/2011 |
| 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 |
| 7284759 | Mounting guard ring A mounting guard ring for a sealing ring with at least one sealing lip, surrounding a sleeve-shaped protective ring with a supporting surface for the sealing lip disposed at the outer periphery and a holding device shaped as a grip, the protective ring being provide... | 10/23/2007 |
| 7278840 | Compliant viscous seal for fluid transfer device A viscous seal for fluid transfer devices that deviates from the conventional wisdom of avoiding contact between the seal and a rotating drive shaft of the fluid transfer device. Instead of avoiding contact, contact between the seal and drive shaft is used to effect... | 10/09/2007 |
| 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 |
| 7237778 | Shut off valve assembly about a shaft of a device having an entry into a vessel The invention is a shut-off seal assembly for use with the drive assembly of fluid-containing vessels. The shut-off seal assembly first locks the seal carrier of the drive assembly in place so that it may not rotate in a clockwise or a counter-clockwise direction. T... | 07/03/2007 |
| 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 |
| 7159873 | Shaft seal The present invention relates to a seal assembly for use in a rotary machine. The seal assembly comprises a first member and a seal carrier mounted to the first member by a mounting member, a second member spaced from the first member and a seal running member posit... | 01/09/2007 |
| 7066471 | Lip-type shaft seal A lip-type shaft seal is made of elastic material with a Shore A hardness of ≦75, includes a radial sealing lip, which has a sealing edge to bear against a rotating component and terminates in a axial sealing lip, which has a sealing edge to rests in installed sta... | 06/27/2006 |
| 7004477 | Reduced load gasket A gasket is adapted to seal between a first member and a second member, and includes a first portion a second portion. The first portion includes a first elastomeric seal portion adapted to be in sealing engagement with the first member. The first portion may also i... | 02/28/2006 |
| 6224322 | Seal assembly for centrifugal pumps with barrier ring In a centrifugal pump, a barrier ring in the form of a dynamic seal member is interposed between relatively rotating, generally circular wall portions which undergo relative axial movement to vary the width of a gap between the wall portions, the seal mem... | 05/01/2001 |
| 5743707 | Contact seal for turbomachines running at high speed and/or having high temperatures in the sealing region A contact seal for turboengines is disclosed which is suitable for high circumferential speeds and high temperatures. The contact seal is of at least a two-part design and includes a thin carrier ring and a sealing ring. The sealing ring is constructed fr... | 04/28/1998 |
| 5449180 | Safety device for primary pump The invention relates to a safety device that ensures longitudinal sealing of the shaft of a primary pump following the rupture of one of the seals separating the high-pressure chamber from the low-pressure chamber of the fluid in the pump, the device mad... | 09/12/1995 |
| 5378000 | Shaft seal assembly The improved shaft seal assembly is disclosed in having the sealing device lodged simultaneously in a female recess in the rotor and stator. The mating relationship of a solid deformable annular seal in opposed recesses in the stator and the rotor results... | 01/03/1995 |
| 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 |
| 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 |
| 4817966 | 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 an annular flange of substantially frusto-conical shape that extends from a larger diameter end that is fixed to the inner rad... | 04/04/1989 |
| 4723781 | Liquid sealed shaft seal A liquid-sealed shaft seal for sealing the lead-through between an inner space and an outer space of a shaft with feed bores for a sealing liquid which is supplied at higher pressure than the pressure in the inner space. The seal includes partial seal gap... | 02/09/1988 |
| 4671677 | Fluid seal with shaft excursion compensation Compensation for shaft excursion in a seal housing is achieved with a fluid film bearing in which bearing fluid is supplied to the bearing region at a pressure and flow rate which depend upon shaft rotational speed. In a disclosed embodiment, the bearing ... | 06/09/1987 |
| 4486026 | Sealing and bearing means by use of ferrofluid This invention relates to sealing and bearing means by use of ferrofluid, in which a magnet is utilized effectively in cooperation with grooves engraved on one surface thereof, the grooves having the function for generating the dynamic pressure of the fer... | 12/04/1984 |
| 4460180 | Sealing of a shaft in a centrifugal pump and a method for effecting the sealing A sealing of a centrifugal pump shaft. When the pump is at rest, the sealing is effected mechanically between surfaces with the aid of loading means, a sealing surface and a packing, and when the pump is in operation, the sealing is effected by means of a... | 07/17/1984 |
| 4428587 | Seal ring with channel for radially accelerating medium to be sealed A seal ring seals a shaft in a housing dynamically and statically. The dynamic seal function is provided by a porous compact which rotates with the shaft to pump liquid media centrifugally back into the sealed space and generally radial, inward channels w... | 01/31/1984 |
| 4304411 | Magnetic/centrifugal-fluid seal A magnetic/centrifugal-fluid seal comprising a rotating disk-like collar/vane surrounding a rotatable shaft journalled in a housing defined by close-fitting stationary members forming a cavity to accommodate the rotatable shaft and disk-like collar/vane. ... | 12/08/1981 |
| 4277072 | Seal for the gap between a revolving shaft and the bore of a housing against a mixture of a liquid and a gas A seal to prevent the escape of a liquid and gas mixture from the gap between a rotating shaft and the bore of a housing, which includes an inner ring secured to the shaft and an outer ring secured to the outer wall of the housing bore. A flange-like memb... | 07/07/1981 |
| 4243230 | Low energy tandem seal This invention is directed to a low energy tandem seal which includes an end face seal cooperatively interconnected to a dynamic seal for sealing the circumferential space between a housing and a shaft. Under static non-operating conditions, the end face ... | 01/06/1981 |
| 4165881 | Flexible seal and seal assembly A flexible seal and seal assembly is disclosed for use in rolling mills where roll necks are journalled for rotation in oil film bearings. The flexible seal has a circular seal body adapted to be mounted in sealing engagement on a tapered section of the roll n... | 08/28/1979 |
| 4076259 | Static sealing mechanism for liquid natural gas compressors and hydrogen cooled generators A system preventing high pressure fluid leakage from a liquid natural gas compressor casing or hydrogen cooled generator casing to the atmosphere. Sealing the clearance between a non-rotating shaft and the casing through which it extends is provided by a ... | 02/28/1978 |
| 4076260 | Sealing device for rotary machines containing hydraulic fluid A sealing device for rotary machines containing hydraulic fluid, such as centrifugal pumps, compressors, steam turbines and the like. An annular gasket/valve has a flexible lip which seals around the pump or other type machine shaft when the machine is in... | 02/28/1978 |
| 3973779 | Sealing arrangement A resilient shaft sealing lip is biassed to bear against a shaft when the shaft is at rest to prevent egress of lubricating liquid past the sealing lip, but upon rotation of the shaft at its rated speed the lip lifts so that sealing friction forces are li... | 08/10/1976 |
| 3963247 | Shaft seal A visco-type seal is disclosed wherein a sealing pressure is built up in a fluid by means of one or more helical windings, the fluid being enclosed in a narrow clearance between a stator and a rotor. The alignment of the rotor within the stator is insured... | 06/15/1976 |
