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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 |
| 8021117 | Impeller for supercharger and method of manufacturing the same An impeller for a supercharger cast in molds to provide excellent aerodynamic performance by eliminating parting-line corresponding parts from a hub surface and vane surfaces in each space formed of a pair of long vanes adjacent to each other an a method of manufact... | 09/20/2011 |
| 7997871 | Impeller for a cooling fan An impeller (10) for a cooling fan includes a hub (20) having a circular wall (22) and an annular sidewall (24) extending downwardly from a rim of the circular wall, and a plurality of blades (30) extending radially from the sidewa... | 08/16/2011 |
| 7927075 | Fan-turbine rotor assembly for a tip turbine engine A fan-turbine rotor assembly (24) for a tip turbine engine (10 )includes a fan hub (64) with an outer periphery (112) scalloped by a multitude of elongated openings (114) which extend into a fan hub web (115). Each elongated... | 04/19/2011 |
| 7585154 | Centrifugal fan and impeller thereof An impeller applied to a centrifugal fan includes a base plate, a hub and a plurality of first blades. The hub is connected to the base plate and the first blades are disposed on the base plate with respect to the hub as a center. Furthermore, the hub has a pluralit... | 09/08/2009 |
| 7473078 | Centrifugal blower A centrifugal blower includes a scroll casing defining a scroll passage having a suction port and a discharge port. A fan member is disposed rotatably in the scroll casing, and the fan member is rotated by a motor. The fan member includes a plate member having at le... | 01/06/2009 |
| 7438529 | Compressor and turbine wheel for a secondary air feed device In a compressor and turbine wheel for a secondary air feed device formed as a single component, a rotor which includes a center disc structure consisting of at least two discs of different materials is provided at one side with compressor blades and on the opposite ... | 10/21/2008 |
| 7435051 | Multi-stage blower A blower is formed with multiple sets of rotatable rings of blades coupled to each other. Multiple inlet rings are correspondingly coupled to the multiple sets of rotatable rings of blades. In one embodiment, the blades may be forward facing blades and include a vol... | 10/14/2008 |
| 7435048 | Drain pump, and air conditioner provided therewith A drain pump is provided that reduces the operating noise when the head is low. The drain pump has a pump casing, and an impeller. The pump casing has a drain inlet for sucking in drain water at a lower end part and a drain outlet for discharging drain water at a si... | 10/14/2008 |
| 7390163 | Radial flow turbine A multi-stage radial flow compressor and turbine includes a rotor having a first plurality of blades and a second plurality of blades radially outward from the first plurality. A stator has a plurality of blades radially positioned between the two sets of rotor blad... | 06/24/2008 |
| 7367775 | Apparatus and method for optimizing vibration of a gas turbine A rotor comprising several blades rotating together with the rotor, particularly running blades, and the blades forming at least one blade ring, is disclosed. The blades within the, or each, blade ring are arranged at a different distance from one another. ... | 05/06/2008 |
| 7360995 | Vertical axis windmill A vertical axis windmill in which a support frame is provided as a wind power dam to form a plurality of shaft-installation sections, and in which a plurality of vertically long blades each of which has a tilted part at the upper and lower ends respectively are disp... | 04/22/2008 |
| 7362004 | Wind turbine device A hybrid blade wind turbine device formed of at least a pair of straight outer airfoil blades, and a pair of inner helical wing blades, as supported for rotation within a safety protective cage structure, which wind turbine can be mounted in the vertical, horizontal... | 04/22/2008 |
| 7351031 | Centrifugal blower A centrifugal blower includes a housing, an impeller, and a guiding cover. The housing includes a compartment delimited by an annular wall. A radial air inlet is defined in the annular wall and communicated with the compartment. The compartment includes an axial ope... | 04/01/2008 |
| 7334936 | Mixing device and method of mixing The present invention is a mixing device and a method of mixing viscous fluids with a mixing device. The mixing device includes a shaft and a support mounted for rotation with the shaft. A plurality of vanes extend from the support and are mounted for rotation with ... | 02/26/2008 |
| 7326034 | Pump apparatus and methods of making and using same Pump apparatus and methods of making and using same are disclosed. One inventive apparatus includes at least two pump stages having different performance characteristics combined in series to substantially match an intended pumping application. An inventive method i... | 02/05/2008 |
| 7322792 | Cooling fan without returning flow A cooling fan without returning flow comprises a motor stator, a frame and a motor rotor. The frame is joined to the stator with a support device at the inlet side thereof. The motor rotor is disposed at the stator. A fan blade set is disposed under the rotor and at... | 01/29/2008 |
| 7273352 | Inlet partial blades for structural integrity and performance Methods and apparatus for conveying fluids (e.g., liquids, gases, and mixtures thereof) are disclosed. A turbopump in accordance with an exemplary implementation of the present invention comprises an impeller defining at least one flow channel and a shroud defining ... | 09/25/2007 |
| 7267530 | Windmill apparatuses and methods of mounting blades to enhance their performance A windmill apparatus has multiple pairs of blades to enhance power output and lift performance. The apparatus has multiple double acting piston/cylinders actuated by the windmill, which includes several clutches that are used to engage and disengage the windmill fro... | 09/11/2007 |
| 7201565 | Fan blade set for cooling fan A fan blade set (10) for a cooling fan includes a hub (12) having a first wall and a second wall extending from the first wall. First blades (14) extend radially from the second wall. Second blades (16) formed on the first wall extend fro... | 04/10/2007 |
| 7195457 | Motor-operated fan for air cushion table A motor-operated fan includes a housing, a motor secured in the housing, and an impeller rotatably mounted on the housing and rotated by the motor. Thus, the impeller has a plurality of blades and a plurality of auxiliary blades to produce a larger air flow when the... | 03/27/2007 |
| 7192254 | Radial fan having axial fan blade configuration The present invention is a radial fan having an axial fan blade configuration. The present invention comprises a hub; a first set of blades around the hub; and a second set of blades on the extending part. Therein, the hub comprises a hollow at the center, an axle, ... | 03/20/2007 |
| 7168923 | Alternator fan The invention is a fan for an alternator adapted to be coupled in rotation to the alternator rotor, and being of the type comprising a wheel part and a plurality of fan blades (47, 48) extending from the latter, the fan being moulded in a plastics material on... | 01/30/2007 |
| 7156612 | Spigot arrangement for a split impeller A spigot arrangement for split impeller (inducer and exducer) includes a recess of the exducer and means for reducing exducer blade root stresses and localized contact stresses between inducer and exducer. ... | 01/02/2007 |
| 7134839 | Radial-flow heat-dissipating fan with increased inlet airflow A radial-flow heat-dissipating fan includes a casing and a cover mounted to a side of the casing. The casing includes a compartment and a side air outlet, and the cover includes an air inlet. A primary fan wheel is rotatably mounted in the compartment and the primar... | 11/14/2006 |
| 7132760 | Wind turbine device A hybrid blade wind turbine device formed of at least a pair of straight outer airfoil blades, and a pair of inner helical wing blades, as supported for rotation within a safety protective cage structure, which wind turbine can be mounted in the vertical, horizontal... | 11/07/2006 |
| 7129604 | Air cooled type generator that is mounted in easier and quicker manner An air cooled type generator includes a housing, an engine, a cooling fan mounted in the engine, a generator body having a first side juxtaposed to the engine, and a cooling fan rotatably mounted on an opened second side of the generator body and including a plurali... | 10/31/2006 |
| 7126235 | Wind power electric device and method A wind-power unit has a wind turbine has an electric generator connected to the wind turbine. The stator of the generator has a winding formed of a high-voltage cable having a core of conducting material, a first layer of semiconducting material surrounding the core... | 10/24/2006 |
| 7125226 | Impeller for radial-flow heat dissipating fan An impeller for a radial-flow heat dissipating fan includes a hub and a plurality of blades surrounding the hub. The blades are connected to a circumference of the hub to allow joint rotation of the hub and the blades. More than one blade include an air inlet side e... | 10/24/2006 |
| 7096712 | Material testing system for turbines The wear resistance of impellers used in multi-stage turbine pumps is tested by using a multi-stage turbine pump having impellers with different physical properties to pump a fluid containing small amounts of an abrasive material. After the fluid has been pumped for... | 08/29/2006 |
| 7097416 | Rotary disc pump A rotary disc pump for pumping fluid materials, comprises a housing having a front and a back wall forming a chamber with a generally coaxial inlet in the front wall and a generally tangential outlet, an impeller is mounted co-axially within the chamber and comprise... | 08/29/2006 |
| 7094027 | Row of long and short chord length and high and low temperature capability turbine airfoils A gas turbine engine turbine stage has an annular row of turbine airfoils including a first plurality of first airfoils having a first chord length and a second plurality of second airfoils having a second chord length shorter than the first chord length. At least o... | 08/22/2006 |
| 7083386 | Fan wheel assembly for connecting multiple hub rings A fan wheel assembly includes at least three hub rings and a connecting member. Each outer circumference of the hub rings provides with extension fan blades. The connecting member serially connects the hub rings which are coaxially stacked in a longitudinal directio... | 08/01/2006 |
| 7044713 | Wind power generator with multiple rotary wings A wind power generating apparatus having a plurality of rotary wings can reduce the load and resistance on the rotary wings due to wind to obtain a highly effective rotation power as well as to flexibly absorb the impact applied to the rotary wings due to varying wi... | 05/16/2006 |
| 7037089 | Cooling fan having dual blade sets A cooling fan with dual blade sets has an impeller formed by a rotatable hub, a stator assembly, and a shell. A plurality of mini blades and a plurality of guide blades are respectively formed on a bottom surface and an external surface of the rotatable hub. The imp... | 05/02/2006 |
| 7029230 | Impeller for a side channel pump An impeller for a delivery pump in which profiled section (14) comprising webs (15) is located on the outer periphery of an impeller (4) for a feed pump (2) that is configured as a side channel pump. The webs (15) are arranged at a... | 04/18/2006 |
| 7008189 | Centrifugal fan A centrifugal fan and a rotor for a centrifugal fan comprising axial blades, straight blades, and a hub having a radius that increases as a function of distance from the fan inlet. ... | 03/07/2006 |
| 7008180 | Axial-flow fan and projector provided with the same An axial-flow fan has a plurality of main fins (702), and auxiliary fins (703) provided between the main fins (702), where the position of a front end of the auxiliary fin (703) relative to X axis and the position of a front end of the ma... | 03/07/2006 |
| 6984111 | Multiblade blower Air flows along pressure surfaces and suction surfaces of main blades of an inner blade group by rotation of an impeller. When the air passes the inner blade group, the air flowing along the suction surfaces of the main blades tends to separate from the suction surf... | 01/10/2006 |
| 6979169 | Modular ventilating exhaust fan assembly and method A ventilation exhaust fan is provided, and in some embodiments includes a housing adapted to interchangeably receive a first module having a first support plate and a second module having a second support plate. Each of the first and second modules have at least one... | 12/27/2005 |
| 6971788 | Fluid mixing device A mixing device includes vanes arranged so that the outer edges of the vanes define a frusto-conical surface in order to facilitate improved circulation of the liquid being mixed. Each vane is preferably curved, either lengthwise, widthwise, or both. In one embodime... | 12/06/2005 |
