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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7862293 | Low profile bleed air cooler A bleed air cooler assembly of a gas turbine engine comprises a cooler body defining a fluid passage therein and a connector detachably affixed with the cooler body installed in an annular bypass air passage. ... | 01/04/2011 |
| 7682129 | Filtration device combined with self-priming pump The present invention provides a filtration device combined with self-priming pump in which a filter replacement work is easy and safe, and removal of air inside of a pump and priming are not necessary. And this filtration device is characterized to provide with a p... | 03/23/2010 |
| 7422415 | Airfoil and method for moisture removal and steam injection An airfoil configured for removing moisture from the steam flow path and injecting steam into the steam flow path of a steam turbine. ... | 09/09/2008 |
| 7326029 | Centrifugal pump and an impeller thereof The present invention relates to a centrifugal pump and an impeller thereof. The present invention especially relates to modifying an impeller of a centrifugal pump in such a way that the pump may be used without a risk of damaging a shaft seal or the like at capaci... | 02/05/2008 |
| 7318699 | Moisture removal grooves on steam turbine buckets and covers and methods of manufacture Covers on bucket tips are provided with an access slot along a circumferentially facing edge of the cover at a location where moisture removal grooves of the bucket will intersect with the cover. Machine tooling is then applied to form the grooves along the suction ... | 01/15/2008 |
| 7293956 | Rolled ring air baffle for a gas turbine engine rotating cavity An annular air baffle for use in a cavity of an annular rotatable gas turbine engine component includes an annular split baffle ring having a plurality of circumferentially spaced apart and radially inwardly extending intermediate dams circumferentially disposed bet... | 11/13/2007 |
| 7290981 | Inline vent fan A vent fan is for directing a fluid along a vent pipe. The vent fan has a housing defining an inlet, an outlet and an internal space for a fluid flow path. A separating wall divides the internal space into an inlet and outlet chamber. The vent fan also includes firs... | 11/06/2007 |
| RE39733 | Impeller for coolant pumps A cooling water pump for internal combustion engine includes a base and an outer cover forming a water input chamber, an impeller supported on a shaft within said chamber, fed shaft includes a bearing/seal unit mounted within the base and the shaft extended outwardl... | 07/17/2007 |
| 7232288 | Hydraulic submersible mud pump Apparatus 10 discloses a submersible hydraulic powered pump for removing matter such as liquid, abrasive particulate, slurries or mixtures 12, from a sump or container. The pump has a housing 14 with an integral stand 16 projecting theref... | 06/19/2007 |
| 7210898 | Gas removal from a centrifugal pump A centrifugal pump includes a system that removes gas that accumulates along the axis of rotation of the shaft and/or impeller of the pump. One or more vent inlets are placed in the region where the gas accumulates and a suction device draws the accumulated gas thro... | 05/01/2007 |
| 7188669 | Motor cooler for submersible pump A motor cooler for an electrical submersible pump (ESP). The ESP is typically deployed within casing and defines an annular space between the ESP and the casing. The ESP includes a pump having an intake, a motor cooler pump having an output port, a seal section belo... | 03/13/2007 |
| 7175384 | Centrifugal pump A centrifugal pump, the impeller (2) of the pump having one or more holes through the impeller adjacent to its hub. The hole or holes (7) are positioned between the vanes (3) of the impeller and closer to the hub than the periphery of the impell... | 02/13/2007 |
| 7137777 | Device for separating foreign particles out of the cooling air that can be fed to the rotor blades of a turbine A device separates foreign particles from cooling air fed to turbine rotor blades. The cooling air is fed directly or indirectly via stationary nozzle units to an annular space between wall parts of a turbine stator and rotating wheel disk as a cooling-air stream in... | 11/21/2006 |
| 7125221 | Centrifugal pump improvements An improved mechanism is provided for adjusting the clearance between the outer edges of impeller vanes of a centrifugal pump and the interior surface of an adjacent intake plate. The impeller having the vanes is mounted as an assembly to a back plate that can be se... | 10/24/2006 |
| 7112033 | Hygienic mechanical seal flushing system for pure liquids in sanitary centrifugal pumps A sanitary centrifugal pump with a hygienic mechanical seal flushing system. The pump has a housing with a pumping chamber defined therein. An impeller is at least partially contained in the housing and is connected to a shaft for rotation. The rotation of the impel... | 09/26/2006 |
| 7044452 | Hydraulic turbine draft tube deflector with enhanced dissolved oxygen A deflector for use in a hydraulic turbine is adapted to be mounted relative to a vertically extending wall of the draft tube. The deflector has an upstream plate and a downstream plate. The upstream plate is positioned to extend downwardly and outwardly from the wa... | 05/16/2006 |
| 7025356 | Air-oil seal An air-oil seal having a runner surface comprising at least one component selected from the group consisting of: polyetheretherketone; polyetherimide; polyphenylene sulfide; and polyetherketoneketone. ... | 04/11/2006 |
| 7008181 | Gas turbine engine air baffle for a rotating cavity An annular air baffle disposed in a cavity of a rotatable gas turbine engine part includes an annular split ring supporting a plurality of circumferentially spaced apart fins. The cavity is closed at a radially outer diameter and open at a radially inner diameter of... | 03/07/2006 |
| 6974301 | Self priming regenerative pump A self priming regenerative pump comprising an impeller with a plurality of vanes formed on its periphery, casings 1a and 1b which house said impeller in a rotatable manner and a pressurizing passage consisting of a gap between said casin... | 12/13/2005 |
| 6973771 | Diffuser for terrestrial or aviation gas turbine A diffuser for a gas turbine engine, said diffuser being disposed between a last stage of a turbine and an exhaust casing, and comprising an outer annular wall and an inner annular wall together defining an annular passage for fluid that diverges in the flow directi... | 12/13/2005 |
| 6960061 | Rotary pump with vented pump chamber A rotary pump includes a pump chamber disposed above a liquid basin, and a radial impeller with a vertical axis disposed in the pump chamber. An intake connecting piece is disposed coaxially with the impeller and is positioned in the liquid basin. Either an inner pa... | 11/01/2005 |
| 6863494 | Process gas extraction device for an axial compressor, having a high degree of adaptability to changes in the operating characteristics of the compressor A process gas extraction device (10) for an axial compressor, having a high degree of adaptability to changes in the operating characteristics of the compressor; a casing (14) of the axial compressor is provided with a volute (15) for collecting... | 03/08/2005 |
| 6827820 | Degassing centrifugal apparatus, process for pumping and degassing a fluid and process for producing paper or board The invention relates to a degassing centrifugal apparatus such as a pump and to a process for pumping and degassing a fluid. The apparatus has a rotatable hollow rotor connected to a stationary fluid inlet at one end and a stationary liquid outlet at the opposite e... | 12/07/2004 |
| 6688844 | Automotive fuel pump impeller An impeller for a fuel pump includes an impeller body having a substantially disk shape. A plurality of radially outwardly extending vanes extend from the impeller body with a plurality of partitions interposed therebetween. The partitions and the vanes d... | 02/10/2004 |
| 6669437 | Regenerative fuel pump with leakage prevent grooves An electric-operated fuel pump has a vaned impeller that is disposed within a pumping chamber for rotation about an axis. The pumping chamber has a main channel extending arcuately about the axis to one axial side of the impeller. The main channel has a r... | 12/30/2003 |
| 6655909 | High flow fuel pump A fuel pump includes a pump housing with a motor which is adapted to rotate a shaft with a ring impeller mounted thereon. A bottom is mounted to the housing and has an outlet. A cover is mounted on an end of the housing and is attached to the bottom with ... | 12/02/2003 |
| 6626639 | Vacuum pump A compound vacuum pump includes a regenerative section and a Holweck section. An annular abutment is formed on the radially innermost rotating cylinder of the Holweck section. The abutment acts to cause dust and foreign particles entering an inlet of the ... | 09/30/2003 |
| 6612805 | Hydrodynamic machine A hydrodynamic machine such as an agitator or a pump has a seal at the fluid medium side in the form of a sliding ring in a coaxial opening in the impeller wheel hub. To prevent particle deposits and blockages in the region of the seal the hub engages int... | 09/02/2003 |
| 6585492 | Pump system with vacuum source A pumping system is disclosed that includes a vacuum source. The pumping system includes a motor coupled to a centrifugal pump and a separator defining a reservoir in fluid communication with an inlet of the centrifugal pump. A water liquid ring vacuum pu... | 07/01/2003 |
| 6554565 | Fluid pump device having filter In a fluid pump device, a filter is secured to a housing. A meshed portion of the filter substantially covers an inlet opening of the housing. Each engaging projection of the filter is engaged with a corresponding engaging recess of the housing in a direc... | 04/29/2003 |
| 6551054 | Method and apparatus for pumping a material and a rotor for use in connection therewith A method and apparatus is disclosed for pumping a material, especially thick, gas-containing, fiber suspensions for wood processing. The apparatus includes a centrifugal pump with a rotor having blades twisted such that the pitch of the blade changes alon... | 04/22/2003 |
| 6499940 | Compressor casing for a gas turbine engine The cylindrical compressor casing of a gas turbine engine has a plurality of radially inwardly and axially rearwardly opening anti-surge grooves disposed on a radially inner surface thereof whereby foreign objects ingested into the engine and entering the... | 12/31/2002 |
| 6464455 | Debris trap in a turbine cooling system In a turbine having a rotor and a plurality of stages, each stage comprising a row of buckets mounted on the rotor for rotation therewith; and wherein the buckets of at least one of the stages are cooled by steam, the improvement comprising at least one a... | 10/15/2002 |
| 6450764 | Pulp pump Apparatus is disclosed for pumping a pulp suspension including a housing and an impeller including a central hub, a wheel disk surrounding the central hub, and pump blades extending radially from the central hub along the wheel disk, which includes at lea... | 09/17/2002 |
| 6446699 | Cooling water pump A cooling water pump, for an internal-combustion engine in particular, with a casing provided with at least one bearing designed to support a pump shaft, with a sealing element devised to seal the bearing against a working space containing the cooling age... | 09/10/2002 |
| 6428271 | Compressor endwall bleed system A compression system endwall bleed system having a plurality of bleed slots formed in a mechanical housing downstream of a rotating shrouded rotor. In one embodiment, the plurality of bleed slots bleed off a separated tip boundary layer to relieve back pr... | 08/06/2002 |
| 6413039 | Impeller for coolant pumps A cooling water pump for internal combustion engine includes a base and an outer cover forming a water input chamber, an impeller supported on a shaft within said chamber, fed shaft includes a bearing/seal unit mounted within the base and the shaft extend... | 07/02/2002 |
| 6413044 | Blade cooling in gas turbine A gas turbine whose blades are cooled with cooling air has in its turbine part a device for the removal of dirt particles from the cooling air. The device consists of a first chamber in which the cooling air is collected, and a second chamber into which t... | 07/02/2002 |
| 6397576 | Gas turbine engine with exhaust compressor having outlet tap control A gas turbine engine comprising a turbine mounted downstream of a compressor and a heat exchanger interconnected between the turbine and compressor and to a heated fluid source, which is connected to a fuel source, has a compressor flow duct having a plur... | 06/04/2002 |
| 6309173 | Delivery pump A feed pump (2) designed for feeding fuel in a motor vehicle, with an impeller (7) having vane chambers (10, 10a, 11, 11a) delimited by guide vanes (12, 13), and in casing parts (3, 4) adjacent to the impeller (7) and having part-annular channels (14, 15)... | 10/30/2001 |
