Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 8006982 | High temperature dynamic seal A high temperature dynamic seal and methods of assembly and use. The dynamic seal is provided as a rotating seal, which includes a stationary ring and rotating ring assembly, with a seal ring that is positioned between the stationary ring member and the rotating rin... | 08/30/2011 |
| 7651099 | 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... | 01/26/2010 |
| 7389832 | Hydrostatic mechanical seal with local pressurization of seal interface A hydrostatic mechanical seal assembly includes a locally deployed pump for pressurizing a lubricant fluid between the opposing faces of a mating ring and a sealing ring. In one exemplary embodiment, such pressurization may be achieved via a device that converts the... | 06/24/2008 |
| 7367541 | Automatic flush valve actuation apparatus A flexible drive mechanism for a flushing apparatus actuated by movement of a flush handle via an actuation element is disclosed. The drive mechanism includes a housing and flexible drive system in the housing, the flexible drive system including an actuating elemen... | 05/06/2008 |
| 7367739 | Two component seal A pair of pivoting parts are held together with a pin, with a first part, such as a rod end of a hydraulic actuator, positioned between two flanges of a bracket, with the flanges having surfaces mating with sides surfaces of the rod end. A seal is placed in each of ... | 05/06/2008 |
| 7347214 | Rotary shaft sealing mechanism and liquid processing apparatus The present invention provides a rotary shaft sealing mechanism having the seal between the rotary shaft and the seal ring improved, and a liquid processing apparatus including the rotary shaft sealing mechanism. The cleaning processing apparatus 1 com... | 03/25/2008 |
| 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 |
| 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 |
| 7188691 | Metal seal with impact-absorbing ring Disclosed is a seal assembly for dynamically sealing between rotatable members, such as employed to seal the rolling cone of a rock bit. One preferred assembly includes an energizer, first and second seal rings, and a cushioning ring having an L-shaped cross-section... | 03/13/2007 |
| 7144477 | Wear indicator for seal strip in a suction box of a paper machine A suction roll assembly includes a suction roll having a perforated shell, and a suction box positioned within the suction roll. The suction box includes a holder, a seal strip adjacent the shell and carried by the holder, at least one target carried by the seal str... | 12/05/2006 |
| 7131814 | Cooling arrangement A cooling arrangement (17) for supplying a first cavity (9) with a cooling gas, in particular in a gas turbine of a power plant, includes a cooling-gas passage (19) which is formed in a first component (6) and connects the first cavity ( | 11/07/2006 |
| 7108418 | Bearing seal assembly for concrete auger mixer and method for using same An auger mixer for mixing a concrete mix includes an elongated mixer housing having a mixing chamber for mixing the concrete mix therein. A mixing auger is rotatably mounted within the mixing chamber. A bearing assembly mounts one end of the auger shaft to the mixer... | 09/19/2006 |
| 7014192 | Multistage shaft sealing apparatus A plurality of seal units are provided between a seal housing and a rotating shaft. An inside seal unit, an outside seal unit, and at least one pair of intermediate seal units are aligned in an axial direction. The inside seal unit contacts fluid to be sealed. The o... | 03/21/2006 |
| 7004473 | Mechanical seal device A primary object of the present invention is to achieve a high sealing performance, to collect hazardous gas contained in a sealed process fluid, and to realize an easy disposition of a mechanical seal device. A typical configuration is that the end face of a shaft ... | 02/28/2006 |
| 6994351 | Mechanical seal device and method for a scraped surface heat exchanger A sealing method and apparatus is provided for sealing between a rotating shaft and a fixed housing such as found in scraped surface heat exchangers. The sealing apparatus and method includes a sealed cartridge where a gland and a trapped seal ring can be releaseabl... | 02/07/2006 |
| 6969071 | Face seal assembly A face seal assembly including an annular mating ring housing having a proximal end surface with a channel therein, a mating ring insert disposed in the channel, the mating ring insert including a mating ring compressed within a first band to maintain the integrity ... | 11/29/2005 |
| 6959929 | Seal for a compressor and centrifugal compressor equipped with such a seal A seal for a rotary compressor comprises a casing, at least one assembly having a rotating seal face ring which rotates as one with a sleeve intended to be mounted on a shaft of the compressor and of a stationary seal face ring mounted on the casing, the seal face r... | 11/01/2005 |
| 6814355 | Mechanical split seal A split seal component includes two seal face segments in two holder halves and a method of assembly and installation. Each seal face segment has a primary sealing surface and a section extending axially from each primary sealing surface The holder halves are adapte... | 11/09/2004 |
| 6780939 | Low molecular weight hydrogenated nitrile rubber The present invention relates to hydrogenated nitrile rubber polymers having lower molecular weights and narrower molecular weight distributions than those known in the art. The present invention is also related to shaped articles containing hydrogenated nitrile rub... | 08/24/2004 |
| 6673201 | Top separator with intraseal for digester vessel in a pulp or fiber processing system A top separator assembly for a digester is disclosed comprising: a rotatable shaft for the top separator; a packing for the shaft; and a sealing ring operatively mounted to the shaft and having a nominal clearance with the pack box, said sealing ring moun... | 01/06/2004 |
| 6589391 | Top separator with intraseal for digester vessel in a pulp or fiber processing system A top separator assembly for a digester is disclosed comprising: a rotatable shaft for the top separator; a packing for the shaft; and a sealing ring operatively mounted to the shaft and having a nominal clearance with the pack box, said sealing ring moun... | 07/08/2003 |
| 6568684 | Method of forming a seal assembly around a shaft A method of forming a seal assembly around a shaft is disclosed. The method includes (a) urging a first seal member against a second seal member so as to produce a load between a first seal face and a second seal face, (b) measuring the load produced betw... | 05/27/2003 |
| 6561515 | Mechanical split seal A split seal component includes two seal face segments in two holder halves and a method of assembly and installation. Each seal face segment has a primary sealing surface and a section extending axially from each primary sealing surface. The holder halve... | 05/13/2003 |
| 6227545 | Heatable and/or coolable cylinder Cylinder that includes at least one stationary portion and at least one rotatable portion and a support and a method for sealing the same. The at least one rotatable portion includes a bearing axle rotatably coupled to the support, and the at least one st... | 05/08/2001 |
| 6155572 | Non-contacting mechanical face seal including fluid control system A mechanical seal for providing fluid sealing between a housing and a rotatable shaft includes a first seal ring having a first seal face and a second seal ring having a second seal face. The first seal face further has a first portion and a second portio... | 12/05/2000 |
| 6105968 | Textured seal for reduced wear A contact surface of a seal having textured features is described. The contact surface seals properly and is resistant to wear. The contact surface is able to perform in very severe environments, such as those found in earthmoving applications.... | 08/22/2000 |
| 5961122 | Split mechanical face seal and method of assembly thereof A split mechanical face seal assembly for mounting around a shaft, and having two holder halves, each of the two holder halves having first and second axial ends, each first end defining a counterbore formed therein, a seal face half received in the count... | 10/05/1999 |
| 5947479 | Mechanical seal with flexible metal diaphragm A mechanical end face seal for sealing between a housing and a relatively rotating shaft which includes a pair of relatively rotating annular rings having seal faces in sealing contact with each other to define a seal interface. A generally annular flexib... | 09/07/1999 |
| 5820129 | Mechanical split double seals Split mechanical seal assemblies which include a pressurized fluid barrier and multiple concentric and axially aligned stationary seal rings. The stationary seal rings are in sealing relation with a rotary seal ring at their respective seal faces, and wit... | 10/13/1998 |
| 5769604 | Face seal device having high angular compliance A rotary seal assembly for preventing leakage of a fluid from a region of high pressure in a housing to a region of relatively lower pressure includes a first member mounted within the housing and having a central axis and an annular sealing face extendin... | 06/23/1998 |
| 5762342 | Mechanical seal with controller for regulating face contact pressure A mechanical seal assembly for creating a sealing relationship between a housing and a shaft which is rotatable relative thereto. The seal assembly includes first and second coaxially aligned and axially adjacent seal rings disposed in an encircling relat... | 06/09/1998 |
| 5713576 | Gas lubricated barrier seal A double, back to back oriented mechanical end face seal arrangement for use in sealing pumps or other devices used in fluid transfer of toxic or corrosive fluid has an intermediate buffer fluid chamber into which a relatively inert gas, such as nitrogen,... | 02/03/1998 |
| 5370401 | Antirotational and axial force component in a pusher seal assembly and tool for wear installation In a split mechanical face seal including means for biasing one split seal face against another, an annular, inwardly radially extending leaf spring, which may also be split, is mounted at an outer diameter thereof to the stationary seal housing. A radial... | 12/06/1994 |
| 5267736 | Sealing apparatus for rotating shafts, in particular stern tube seal for the propeller shaft of a ship A sealing apparatus for rotating shafts, in particular a stern tube seal for a propeller shaft of a ship with or without shaft bushings, with aligned gaskets resting on the shaft and located in a stationary support system, preferably of an axial face seal... | 12/07/1993 |
| 5217233 | Spiral groove seal system for sealing a high pressure gas A seal system for sealing a housing and rotatable shaft against leakage of a gas under high pressure; hydrogen is an example. The system, using multiple seals in tandem, provides a stepped reduction of high pressure gas at full height pressure to a low pr... | 06/08/1993 |
| 4989882 | Shaft seal with predetermined mounting parameters A shaft seal has a rotary seal and a stationary seal with predetermined axial and radial dimensions. The two seals are positioned, with respect to a shaft, so as to fix the axial and radial dimensions with respect to one another by way of a plastic strip ... | 02/05/1991 |
| 4889348 | Spiral groove seal system for high vapor-pressure liquids A seal system is disclosed for sealing a housing and rotatable shaft against leakage of high vapor-pressure liquids. The method of sealing contemplates phase change of the liquefied hydrocarbon fluid across a first module. The gas so formed is contained b... | 12/26/1989 |
| 4878676 | Seal-flushing in centrifugal-pumps, improved methods and apparatuses Disclosed is an improved method of centrifugal pump impeller-shaft seal-flushing; comprising the step of supplying pressurized seal flush fluid to a centrifugal pump impeller-shaft seal within an operating centrifugal pump: (a) axially, from the rear; (b)... | 11/07/1989 |
| 4858936 | Split gland seal assembly A split seal assembly comprising a seal gland and spool are disclosed to retrofit a packed seal around a shaft.... | 08/22/1989 |
| 4815747 | Face type seal assembly A seal cartridge for providing a fluid seal between a rotating shaft and a housing such as found in a centrifugal pump. The seal cartridge includes rotating and non-rotating seal portions which prior to installation are maintained in alignment and carried... | 03/28/1989 |
