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| Number | Title | Issue Date |
| 7887298 | Vertically staggered helicopter rotor blade assembly A helicopter rotor assembly with vertically staggered blades is disclosed. Each blade travels in a rotational path which does not cross the rotational paths of the other blades. This arrangement reduces noise because each blade travels in a path which avoids turbule... | 02/15/2011 |
| 7866949 | Methods and apparatus for fabricating a rotor for a steam turbine A method of fabricating a turbine rotor is provided. The method includes fabricating a plurality of substantially cylindrical disks. Fabricating each disk includes fabricating a substantially cylindrical body and extending a bore substantially concentrically through... | 01/11/2011 |
| 7862301 | Laminated impeller The present invention relates generally to impeller of aerators, and more particularly to a laminated impeller of paddlewheel aerator. To solve the shortcoming of existing impeller of aerator: single-body structure, large volume, complicated manufacturing technique ... | 01/04/2011 |
| 7429163 | Performance propeller The invention relates to a propeller and an apparatus to modify a propeller that provide new propeller performance characteristics. In a preferred embodiment, the propeller includes two blade sets wherein the blades in the sets of distinct geometries from the blades... | 09/30/2008 |
| 7422418 | Cross flow fan A cross flow fan of an indoor unit of, for example, an air conditioner includes a pair of disc-shaped end plates and a plurality of fan blades attached to the end plates in a ring-shaped arrangement. Each of the fan blades has a cross sectional area ratio of Sa/Sb i... | 09/09/2008 |
| 7393181 | Expandable impeller pump An impeller according to an example of the present invention comprises a hub, and at least one blade supported by the hub. The impeller has a deployed configuration in which the blade extends away from the hub, and a stored configuration in which the impeller is rad... | 07/01/2008 |
| 7390170 | Device for assembling annular flanges together, in particular in a turbomachine A device for assembling together annular flanges by means of fastening bolts, in particular in a low-pressure turbine stage of the turbojet, one of the flanges has an element projecting from its face that faces the other flange and that is received in a notch in sai... | 06/24/2008 |
| 7357622 | Method and installation for extracting energy from a flowing fluid Turbine farm comprising at least a first turbine and at least a second turbine for energy extraction from a flowing fluid, wherein when the second turbine is on the lee side of the first turbine, under nominal power, the axial induction of the first turbine is lower... | 04/15/2008 |
| 7357617 | Fan including a plurality of spaced fan bodies A fan including a plurality of spaced fan bodies that rotate in a substantially cylindrical cavity having inlet and outlet openings for tangential intake and discharge of the fluid, the fan bodies comprising substantially disc-shaped bodies that extend in a substant... | 04/15/2008 |
| 7339293 | Electric machine with a wrapped winding cooled to a low temperature An electric machine has a rotor that is rotatable about an axis of rotation, and an especially superconducting winding which is to be cooled to a low temperature. The winding is enveloped by a securing means with a wrap. The outer contour of the wrap of the securing... | 03/04/2008 |
| 7329964 | Compact hydropower generator adopting multiple rotary drums A compact hydropower generator adopting multiple rotary drums comprises a water reservoir for changing the flow direction of water that flows along a river and for temporarily storing the water. A base body is located at a lower side of the water reservoir and has a... | 02/12/2008 |
| 7275911 | Heat-dissipating fan and its housing A heat-dissipating fan with an upward air-guiding member is provided. The heat-dissipating fan includes a housing, an impeller having a hub and a plurality of blades disposed around the hub, a base disposed inside the housing for supporting the impeller thereon, and... | 10/02/2007 |
| 7264199 | Unloaded lift offset rotor system for a helicopter A rotor system (12) for a helicopter (10) includes a rotating shaft (82). A gimbaled hub assembly (56) is coupled to the rotating shaft (82). Rotating blades (24) and non-rotating blades (33) are coupled to the gimbal... | 09/04/2007 |
| 7264446 | Centrifugal-fan impeller, and method of its manufacture A tiny-diameter, lengthwise extensive impeller utilized in an ultra-small centrifugal fan is molded by an injection molding operation. In order to avert difficulties attendant on injection-molding ultra-miniature parts, the thickness and length of a reinforcing ring... | 09/04/2007 |
| 7247001 | Impeller An impeller (1) according to the present invention has a disk-like main plate (10), a blade (20) joined to the main plate, and a side plate (30) having a suction port. A boss hole (12) is formed in a central portion of the main pla... | 07/24/2007 |
| 7241108 | Cantilevered stator stage A cantilevered stator stage for the axial compressor 14 of a gas turbine engine 10 in which the stator tips 26 rub against an abrasive section 24 on the rotor drum 22 during initial running of the engine 10 to abrade the tip... | 07/10/2007 |
| 7241106 | Combined cycle boundary layer turbine A two staged fluid propulsion apparatus of the type which utilizes prior art pitched blades combined with solid boundary layer disks supported by a novel rotating tubular flow conduit perforated to allow fluid flow to from the interior of the tube to the exterior su... | 07/10/2007 |
| 7241110 | Centrifugal fan with stator blades A centrifugal fan with stator blades. The centrifugal fan includes a first frame, a second frame, a driving device, and a blade structure with a first portion and a second portion. The second frame includes a plurality of stator blades thereon. The first portion is ... | 07/10/2007 |
| 7238006 | Multiple impeller fan for a shrouded floor drying fan A method and apparatus for drying floors and carpets using a double impeller fan for generating a pressurized air stream within a vertical cylindrical fan shroud that is spaced two to five inches away from the floor on a set of legs such that an opening is formed be... | 07/03/2007 |
| 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 |
| 7223074 | Propeller shaft arrangement, propeller arrangement, adaptive arrangement and propulsion arrangement Apparatus for adapting a propeller system including a propeller shaft (15, 16) and a propeller (7, 8) adapted to be mounted on the propeller shaft (15, 16). The propeller system includes a propeller (7, 8) connected in a rotationally fixe... | 05/29/2007 |
| 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 |
| 7192244 | Bladeless conical radial turbine and method Turbo-machinery and methods are disclosed for a bladeless conical radial turbine wherein fluid is directed axially within the pump body to produce an axial output. The rotor comprises a plurality of spaced apart conical elements. A plurality of spiraling flow paths ... | 03/20/2007 |
| 7189051 | Wind power plant A wind power plant includes four main elements: a foundation (29), at least one supporting structure (21), a carrying construction (23) having a vertical axis (25) and being rotatable around the vertical axis, and at least one rotor (4... | 03/13/2007 |
| 7182572 | Impeller assembly An impeller assembly has a hollow body, multiple main blades and multiple booster blades. The main blades are mounted around the body to define multiple flow channels between the main blades. The boosting blades are mounted around the body at the bottom edge and eac... | 02/27/2007 |
| 7165933 | Screw pump for transporting emulsions susceptible to mechanical handling A screw pump for transporting a viscous product is described comprising a cylindrical housing connected to a removable bottom piece in one end and a removable cap in the opposite end, a rotor having one or more screw blades connected to a driving motor, an inlet and... | 01/23/2007 |
| 7156611 | Counterrotating axial blower An axial-flow fan with double impellers is provided that can produce a larger amount of air and a higher static pressure than can be achieved with conventional fans. The axial-flow fan with double impellers has a first axial-flow fan unit and a second axial-flow fan... | 01/02/2007 |
| 7153102 | Bladed disk fixing undercut An undercut is provided in a gas turbine engine disk to smooth out an uneven axial distribution of radial stress in the disk. The undercut is defined radially inwardly of the blade attachment slots provided at the periphery of the disk. ... | 12/26/2006 |
| 7144214 | Rotor supporting structure of windmill for power generation A windmill 10 includes a frame 11 and a rotor 12 provided rotatively around the vertical shaft center. The rotor includes bosses 23, 24 located above and below, plural transversal blades 25 extending radially from the bosses, longi... | 12/05/2006 |
| 7137706 | Fan apparatus, method of manufacturing fan apparatus, projection type display device and electronic device With a trend toward a higher intensity projection type liquid crystal display device to further increase brightness of a projection screen, rated input power of a light source lamp increases, which makes essential a fan apparatus for cooling the light source lamp, e... | 11/21/2006 |
| 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 |
| 7128535 | Turbine drum rotor for a turbine engine The present invention relates to an improved turbine structure for use in a gas turbine engine. The turbine structure includes a one-piece drum rotor and a plurality of turbine blades attached to the one-piece drum rotor. The one-piece drum rotor includes integrally... | 10/31/2006 |
| 7125219 | High-pressure fan The invention relates to a high-pressure fan which comprises an electric motor provided with a shaft that goes through it; blade wheels which are mainly made of a carbon fibre-based composite material, arranged on both sides of the electric motor and mounted directl... | 10/24/2006 |
| 7118344 | Wind power plant for generating energy A wind power system (1) for generating power is proposed, comprising a rotor which is axially flowed through, is rotatably held on a shaft (2) and is provided with blades (3), as well as a guide device (5) which accelerates the air flow t... | 10/10/2006 |
| 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 |
| 7083380 | Separable distribution rotor and horizontal rotor distributor having the same A separable distribution rotor and a horizontal rotor distributor having the same. The separable distribution rotor includes a first distribution rotor, a second distribution rotor, and an elastic member interposed between the first distribution rotor and the second... | 08/01/2006 |
| 7052235 | Turbine engine shroud segment, hanger and assembly A turbine engine shroud segment comprises a body including an outer surface from and along which a segment projection extends away from and in an axial direction. The segment projection includes circumferentially spaced apart segment support surfaces. A shroud hange... | 05/30/2006 |
| 7044711 | Helical device for conversion of fluid potential energy to mechanical energy This device utilizes a helical baffle inside of generally cylindrical housing to convert potential energy of a fluid to kinetic and/or mechanical energy that can be captured for productive use. The housing's axis is positioned at an angle from horizontal and the flu... | 05/16/2006 |
| 7025569 | Axial flow fan with multiple segment blades An axial flow fan with a plurality of segment blades is described. The axial flow fan has a base, a hub and a plurality of blade units. The hub is mounted on, or pivots on, the base and supports the blade units. Each of the blade units is connected to a periphery of... | 04/11/2006 |
| 7008172 | Side-furling co-axial multi-rotor wind turbine A multiplicity of horizontal axis rotors are coaxially attached, at spaced intervals, to an elongate driveshaft. This driveshaft with attached rotors is aimed, not directly into the wind, but at a slightly offset angle, allowing each rotor to encounter a wind stream... | 03/07/2006 |
