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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 7938404 | Slide ring seal A shaft extending along and rotatable about an axis and a housing surrounding a portion of the shaft are provided with a seal assembly having an inner ring fixed on and rotatable with the shaft and having a pair of axially oppositely directed outer faces and a pair ... | 05/10/2011 |
| 7905493 | Sealing system assembly for high pressure fluid handling devices A process fluid handling device is provided in an electrochemical cell system having a sealing system assembly between a process fluid compartment and a drive compartment of the fluid handling device. The sealing system comprises a double seal configuration forming ... | 03/15/2011 |
| 7823885 | Dual seal assembly A dual seal assembly, in particular for sealing a gas compressor, includes a first mechanical seal assembly including a pair of co-operating seal rings, one of which is provided for common rotation with a rotating component and the other of which is provided rotatio... | 11/02/2010 |
| 7343968 | Washpipe seal assembly A coupling seal assembly is described for directing a pressurized abrasive fluid between a non-rotating conduit member and a rotating second conduit member. The seal assembly includes a first ceramic floating seal member secured to the non-rotating conduit member an... | 03/18/2008 |
| 7325652 | Bumper/muffler assembly A bumper/muffler assembly is provided comprising a bumper; and a muffler having an outer shell. The outer shell may be formed from a non-high impact resistant material, such as a thin metal or a composite material. The muffler may comprise a separate element from th... | 02/05/2008 |
| 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 |
| 7290669 | Upflow bioreactor having a septum and an auger and drive assembly An upflow bioreactor includes a vessel having an inlet and an outlet configured for upflow operation. A septum is positioned within the vessel and defines a lower chamber and an upper chamber. The septum includes an aperture that provides fluid communication between... | 11/06/2007 |
| 7189054 | Self-compensating clearance seal for centrifugal pumps A radial seal is provided for installation within a centrifugal pump of the type having an impeller, a pump casing having a suction inlet, a sealing ring groove formed in the pump casing, and means for supplying flushing water to the sealing ring groove. The radial ... | 03/13/2007 |
| 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 |
| 7144015 | Modular gas seals cartridge A tandem gas seal assembly is described for sealing between the rotor and the casing of a rotary machine. The assembly comprises two sealing stages 10, 12 mounted axially adjacent to one another on the machine rotor. In the invention, wherein the two stages | 12/05/2006 |
| 7125019 | Single seal with resilient member The invention relates to a single seal, and more specifically to a seal for a rotary shaft extending through a wall, e.g. that of a pump housing. The single seal exhibits one single sealing location between a stationary and a rotating sealing ring. The seal is attac... | 10/24/2006 |
| 7055826 | Seal and bearing assembly A seal and bearing assembly for use in rotating machinery of the type having a rotor which turns within a stationary housing. The rotor and housing define a seal cavity therein in which the seal and bearing assembly is positioned. The assembly comprises a first bear... | 06/06/2006 |
| 7044470 | Rotary face seal assembly A rotary seal assembly including a first member having a sealing face and a second member having a sealing face with a number of pumping grooves therein. At least a first set of pumping grooves stating proximate a center portion of the sealing face and extending out... | 05/16/2006 |
| 7040627 | Cinchpac self-loading rotary shaft seal A seal assembly which is secured to a rotating shaft and which seals around the shaft. The seal assembly has molded grooves adjacent to the shaft which grasp the shaft and prevent leakage. ... | 05/09/2006 |
| 6905123 | Seals A gas seal for providing a seal between a pair of relatively rotatable components is provided with a stand-still seal which will seal between the components when the components are stationary, the stand-still seal having a sealing element mounted in sealing relation... | 06/14/2005 |
| 6739829 | Self-compensating clearance seal for centrifugal pumps A seal for use in a centrifugal pump of the type used for pumping an abrasive slurry, and having a sealing ring groove formed in the pump casing and an arrangement for supplying flushing water, comprising a radial seal having a sealing end, a water receiving end, an... | 05/25/2004 |
| 6695315 | Single seal The invention relates to a single seal, and more specifically to a seal for a rotary shaft extending through a wall, e.g. that of a pump housing. The single seal exhibits one single sealing location between a fixed and a rotary sealing ring. The seal is f... | 02/24/2004 |
| 6688602 | Shaft sealing mechanism of compressor with mechanical seal The mechanical seal (3) includes: a rotary side sliding ring (32) which is supported by the large diameter side outer circumferential face (23) of the annular step section (21) of the rotary shaft (2) via the rotary side O-ring (37) and press-fitted into ... | 02/10/2004 |
| 6655693 | Non-contacting gas compressor seal A non-contacting gas compressor seal assembly is disclosed with an intermediate buffer chamber. The process gas is corrosive or otherwise hazardous and is contained from entering the atmosphere by pumping the barrier gas toward the process fluid. The inbo... | 12/02/2003 |
| 6568687 | Mechanical face seal A mechanical end face seal comprising two relatively rotatable seal rings, a resilient bellows for providing a secondary seal between one seal ring and either a housing or a rotating shaft and a finger spring element nested in the bellows. The resilient b... | 05/27/2003 |
| 6568685 | Dynamic rotating seal assembly A fluid and/or gas treatment unit containing a dynamic rotating assembly for passage of a fluid and/or gas therethrough comprises a housing having a generally cylindrical body and end walls, and a generally cylindrical member rotatable in the chamber and ... | 05/27/2003 |
| 6446976 | Hydrodynamic face seal with grooved sealing dam for zero-leakage A mechanical face seal includes a pair of relatively rotatable seal rings having opposing seal faces which define a sealing region therebetween. The sealing region extends radially between the inside and outside diameters of the seal rings to seal a fluid... | 09/10/2002 |
| 6398223 | Mechanical face seal A mechanical face seal comprising two seal rings for use in water pumps and other fluids, including a resilient bellows for providing a secondary seal between one seal ring and either a housing or a rotating shaft extending through an aperture in the hous... | 06/04/2002 |
| 6182971 | Gas seal for pumps A gas seal construction for use on a pump to create a seal between the relatively rotatable pump shaft and housing. A shroud structure is disposed in close surrounding relationship to the shaft axially between the seal and the pump chamber for causing sol... | 02/06/2001 |
| 6109617 | Gas seal assembly and method of sealing A gas seal assembly which in one embodiment comprises a seal ring having a plurality of annularly spaced-apart geometric impressions which cooperate with another seal ring having an annular groove into which opens a plurality of fluid pathways, the pathwa... | 08/29/2000 |
| 5947480 | Sealing unit for rotating shaft A sealing unit for sealing an opening through which a rotating part passes. A rotary ring turns within a housing when a pair of flexible rings carried by the rotary ring are turned by engagement with a rotating part. The opposed faces of the rotary rings ... | 09/07/1999 |
| 5941531 | Double gas seal having an improved bellows arrangement An improved gas seal having inboard and outboard seal units each defined by a pair of opposed and relatively rotatable seal faces, one face of each pair having appropriate grooves which communicate with a pressurized barrier gas, preferably an inert gas s... | 08/24/1999 |
| 5924697 | Double gas seal with bellows supported by backing and support rings An improved gas seal having inboard and outboard seal units each defined by a pair of opposed and relatively rotatable seal faces, one face of each pair having appropriate grooves which communicate with a pressurized barrier gas, preferably an inert gas s... | 07/20/1999 |
| 5901965 | Bellows seal having balanced, de-coupled seal ring and seal ring shell A balanced, de-coupled seal assembly for use in a bellows seal having a mating rotating seal assembly, wherein the seal is used for sealing a process fluid along a rotatable shaft extending from a machine body. The seal assembly includes a seal ring, a se... | 05/11/1999 |
| 5490679 | Seal ring design A mechanical end face seal having a first seal ring with a generally radially extending sealing face, a second seal ring having a sealing face opposite to and in mating relation with the sealing face of the first seal ring, the second seal ring having a g... | 02/13/1996 |
| 5412977 | Turbo machine with an axial dry gas seal In a turbo machine, for example, a turbo compressor, the rotor shaft extends through and is sealed relative a housing via dry gas seals in which a seal clearance is achieved between a rotating, sealing body and a non-rotating sliding body in which the inn... | 05/09/1995 |
| 5368311 | Shaft seal assembly for a rotary valve A rotary valve which is particularly useful in handling foodstuff or materials which will not tolerate cross-batch contamination, the valve including a housing having an inlet and an outlet which may be connected to a pneumatic conveying duct or the like,... | 11/29/1994 |
| 5341198 | Apparatus for sealing a metering roll An end sealed metering apparatus includes a cylindrical metering roll mounted for rotation about a central longitudinal axis, a blade aligned with the longitudinal axis and contacting the metering roll, an elastomeric seal supported against an end of the ... | 08/23/1994 |
| 5251913 | Track roller for tracked vehicles Sealed roller, particularly for tracked vehicles, including a supporting shaft which is inserted with a tight fit in respective blind bushes preset for fixing to a supporting structure, and a roller body rotatably supported about the shaft.... | 10/12/1993 |
| 5158431 | Shaft seal assembly, especially for high-pressure turbocompressors A turbocompressor shaft seal, especially for a high-pressure turbocompressor, has each of its gas-side and atmosphere-side slide rings biased toward a rotor ring of the shaft and associated with blocking-liquid compartments which are interconnected by an ... | 10/27/1992 |
| 5149249 | Shaft seal assembly, especially for high-pressure turbocompressors A turbocompressor shaft seal, especially for a high-pressure turbocompressor, has each of its gas-side and atmosphere-side slide rings biased toward a rotor ring of the shaft and associated with blocking-liquid compartments which are interconnected by an ... | 09/22/1992 |
| 5106105 | Rotary kiln seal A rotary seal used to prevent the escape of contaminates from a rotating kiln incinerator. The rotating seal combines a rotating disc plate which is attached to the rotating kiln shell and four sets of non-rotating carbon seal bars housed in a primary and... | 04/21/1992 |
| 5096396 | Rotary apparatus having passageways to clean seal chambers Improvements are disclosed in a rotary, lobar, positive-displacement pump and in a rotary, centrifugal pump, whereby all product-contacting areas of the pumps can be effectively cleaned without disassembly, i.e., cleaned in place. Non-rotating seals seal ... | 03/17/1992 |
| 5074568 | Shaft seal The shaft seal between a fixed housing wall (2) and a revolving shaft (1) consists of a collar (6) fixedly connected to the shaft (1), respectively one leg of the U-shaped sealing rings (69, 71) pressing against this collar. The cavities (14, 15) of the s... | 12/24/1991 |
| 5069571 | Rod end assembly A spherical rod end assembly includes sealing components, each having a flexible, resilient skirt, integrally formed on a metal body, which overlies and seals the cavity within which the ball of the assembly is seated, to exclude dirt and other foreign ma... | 12/03/1991 |
