Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 8167314 | Distortion resistant face seal counterface system According to the present invention, an annular face seal arrangement for a gas turbine engine is provided that includes a mounting ring, a mounting member, a rotor, and a stator. The mounting ring has a width extending between a first axial end and a second axial en... | 05/01/2012 |
| 8091897 | Mechanical seal assembly A split mechanical composite seal assembly for providing a seal between a rotating shaft and a static surface. The split mechanical composite seal assembly includes first and second axially adjacent annular seal elements. The first and second seal elements each incl... | 01/10/2012 |
| 8042813 | Shaft-sealing device for pump A shaft-sealing device includes a seal cover (3) attached to a pump housing (2) in which a rotary shaft (1) is mounted. The seal cover (3) includes a shaft-sealing section (381) and a coolant outlet (326) intersecting the sh... | 10/25/2011 |
| 7959156 | Mechanical seal with enhanced face stability A seal assembly for use with a rotating shaft comprises a seal ring, a seal ring shell and bellows. The seal ring defines an axially extending annular surface and a radially extending seal face. The seal ring shell includes a foot portion connected to a radially ext... | 06/14/2011 |
| 7819405 | Mechanical seal A mechanical seal that prevents deposition of a degradation material generated on a sliding interface is to be provided. In a mechanical seal including a sleeve that rotates with a rotating shaft, a seal cover fixed to a housing, a rotating ring attached to the slee... | 10/26/2010 |
| 7793940 | Mechanical end face seal with ultrahard face material An end face seal having two thin, opposed faces of a composite PDC/tungsten carbide or like material for example of a thickness of from about 2 to 5 mm to about 10 to 15 mm, brazed or adhesively adhered by an epoxy resin to a substrate of tungsten carbide or silicon... | 09/14/2010 |
| 7712744 | Gland plate A gland plate includes a rigid, disk-shaped element that includes at least one radially extending wall having a thickness of from about 0.1 to 4 mm. ... | 05/11/2010 |
| 7708283 | Mechanical seal assembly A split mechanical composite seal assembly for providing a seal between a rotating shaft and a static surface. The split mechanical composite seal assembly includes first and second axially adjacent annular seal elements. The first and second seal elements each incl... | 05/04/2010 |
| 7431304 | Face seal with constriction ring A face seal is provided with a constriction ring around a rubber boot that constricts the normal outward bulging of the flex section of the rubber boot as it folds and tries to roll forward over itself during axial deflection. The constriction caused by the constric... | 10/07/2008 |
| 7427071 | Divided driver device for a slip ring seal A divided driver device (5) for a mechanical face seal for non-rotatable assembly on a rotary component and for the transmission of a torque to a seal ring (2) held in non-rotatable manner on the driver device. The driver device (5) is divided i... | 09/23/2008 |
| 7370864 | Balanced mechanical seal assembly A mechanical seal for providing a fluid-tight seal between a rotating shaft and a stationary housing comprises a first pair of seal members for sealing and separating a process fluid from a barrier fluid and a shuttle. The first pair of seal members comprises a firs... | 05/13/2008 |
| 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 |
| 7311307 | Seal seat assembly with specialized features A seal seat assembly utilizes a positive mechanical drive between a seal seat and the bore of a pump component, which in turn is mounted to and driven by the shaft by means of a positive mechanical engagement therebetween. The grommet accommodates the positive mecha... | 12/25/2007 |
| 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 |
| 7286352 | Thermally expanding base of heatsink to receive fins Embodiments include apparatus, methods, and systems providing a heatsink for electronic heat generating components. In one embodiment, the heatsink includes a metal base having a plurality of grooves, and a plurality of graphite fins connected to the base. The fins ... | 10/23/2007 |
| 7278799 | Hub assembly and method for adjustable mounting on shaft A hub for removable mounting onto a shaft uses a locking ring having an inner diameter that surrounds the shaft and frictionally engages the shaft to fix the locking ring against the shaft axially and rotationally, a first annular hub component that is mounted to th... | 10/09/2007 |
| 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 |
| 7204490 | Shaft-sealing device having an inner modular structure for combining with a rotary machine A shaft-sealing device includes a shaft tube, a retaining ring member, a rotary ring member, a resilient ring member and a sealing ring member. The shaft tube provides with an annular end flange and engaging notches thereon. The rotary ring member also provides with... | 04/17/2007 |
| 7198457 | Single-shaft multistage pump A single-shaft multistage pump is provided to make small-sized and space-saved possible. The single-shaft multistage pump includes a rotary shaft on which impellers are disposed at multiple stages, bearings and for supporting the rotary shaft, and a balance device a... | 04/03/2007 |
| 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 |
| 7121972 | Adjustable flange device for cover member in drive axle assembly A drive axle assembly for a motor vehicle comprises a support beam member, a differential assembly module secured to the support beam member and a cover member fastened to the support beam member to cover at least a portion the differential assembly module. The cove... | 10/17/2006 |
| 7118324 | COcompressor A CO2 compressor for an air conditioner of a motor vehicle is suggested having a sealing device, assigned to the driveshaft of the CO2 compressor, which is implemented as a sliding ring. The CO2 compressor features a lubrication devi... | 10/10/2006 |
| 7097176 | Balanced mechanical seal assembly A mechanical seal having a single rotatable seal ring having a pair of concentric seal faces to form a radially inner seal face and a radially outer seal face. The mechanical seal also includes first and second stationary seal rings, each having a seal face, where t... | 08/29/2006 |
| 7090221 | Seal device A seal contact surface of a seal lip member and a protruding lip member of an end face seal are separated from each other and frictional heat generated at the seal lip member due to sliding motion is prevented from being transferred to the end face seal for softenin... | 08/15/2006 |
| 7080510 | Exhaust gas sealing system for turbocharger An exhaust gas sealing system for a turbocharger includes a control valve for controlling a flow of an exhaust gas in a turbine housing, a shaft extending to an outside of the turbine housing through a bearing bore provided on the turbine housing, one end of the sha... | 07/25/2006 |
| 7066469 | Seal assembly for machinery housing A seal assembly for a machinery housing includes a seal ring having a micro heat exchanger and a gland plate for securing the seal ring to the machinery housing. The gland plate includes a cooling fluid port in communication with the micro heat exchanger. ... | 06/27/2006 |
| 7063329 | Seal/method for improved retention of the sealing element in annular grooves A fitting having an axial end with a front face having an annular groove of half dovetail configuration for receiving a seal. The annular groove having a generally flat base portion, a first and a second side wall generally perpendicular with the base portion and a ... | 06/20/2006 |
| 7048046 | High temperature mechanical seal Preferred embodiments of the present invention provide a submersible pumping system for pumping wellbore fluids. The submersible pumping system includes a rotatable shaft and a mechanical seal that substantially surrounds the shaft. The mechanical seal prevents the ... | 05/23/2006 |
| 7047908 | Cooling flange An apparatus has a body with first and second faces, an inboard surface bounding a central aperture, an outboard perimeter, and an array of bolt holes between the first and second faces. A channel is inboard of the bolt holes and first and second ports communicate w... | 05/23/2006 |
| 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 |
| 7040812 | Bearing assembly and method of manufacturing a bearing assembly A bearing assembly and method of manufacturing a bearing assembly exposable to transmission fluid, the method comprising the steps of: providing a bearing housing (2) having: a base; an annular wall (11) upstanding from the base having an inner (6 | 05/09/2006 |
| 7029393 | Split inlet seal for grain separators and method A grain separator having an easily replaceable seal. The separator comprises a housing and a rotatable grain separation drum carried by the housing, the drum having an end face with an external annular bearing surface. A drive shaft extends axially into the drum thr... | 04/18/2006 |
| 7029012 | Mechanical seal without elastomers A seal that provides sealing between a rotatable shaft and a housing has a stationary part for connection to the housing and a rotary part for rotation with the shaft. The rotary part includes a sleeve for mounting on the shaft. One end of the sleeve is provided wit... | 04/18/2006 |
| 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 |
| 6976681 | Slide ring seal assembly including a radial, rotation preventing arrangement A slide ring seal assembly includes a slide ring having an axially extending annular leg. The leg has radially outer and radially inner circumferential surfaces and a free axial end. A plurality of circumferentially spaced recesses are provided in leg at the free ax... | 12/20/2005 |
| 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 |
| 6962340 | Mechanical seal device A primary technical goal of the present invention is to improve the durability and the seal performance of a cup gasket for a mechanical seal device which retains a seal ring. The mechanical seal device disposes a cup gasket made of a resilient rubber material betwe... | 11/08/2005 |
| 6935632 | Automatically disengaging spacing mechanism for a mechanical seal A spacing mechanism is provided for locating at least one rotatable component relative to a stationary component of a mechanical seal. The spacing mechanism is configured to automatically disengage from the rotatable seal component, and/or its associated hardware, u... | 08/30/2005 |
| 6935633 | Shaft sealing device having a positioning ring and a retaining ring thereof A shaft sealing device includes a shaft tube, a main body, a fixed sealing ring, a positioning ring and a retaining ring. The shaft tube is provided with an outer flange and a rotary ring mounted thereto. The main body has an axial hole for supporting the shaft tube... | 08/30/2005 |
| 6932348 | Mechanical sealing device Even high viscosity fluid or slurry-contained fluid can be securely sealed without deficiency of a liquid sealing device. The sealing liquid device includes an annular packing made of rubber-like elastic material, the annular packing having a secured section fitted ... | 08/23/2005 |
