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| Number | Title | Issue Date |
| 8025484 | Fan rotor assembly A fan rotor assembly has an inner rotor, an outer rotor, a central retainer and a central shaft. The inner rotor has multiple first blades. The outer rotor is stacked on the inner rotor and has multiple second blades. The central retainer is mounted through the inne... | 09/27/2011 |
| 8002526 | Rotor drum for multiple rotor wind turbine According to embodiments described in the specification, provided is a rotor drum for use with a multiple-rotor wind turbine, the rotor drum being mountable on a generator shaft of a generator. The rotor drum comprises a plurality of rotors, each rotor being configu... | 08/23/2011 |
| 7422363 | Fluid mixing apparatus An apparatus for mixing fluid. ... | 09/09/2008 |
| 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 |
| 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 |
| 7309213 | Wind sail receptor A wind sail receptor for turning in a wind or water flow to operate a power generator that includes from six to ten identical, equal spaced blades, that are formed from two flat sections of a stiff material and are arranged between a rear hub and spaced apart forwar... | 12/18/2007 |
| 7305777 | Auger for snow throw machine A snow throwing machine including a housing, an engine, an impeller and an auger for collecting snow and directing it to the impeller. The auger including an auger shaft disposed transversely in the housing and drivable by the engine, and a plurality of flytes mount... | 12/11/2007 |
| 7288850 | System and apparatus for emergency backup power generation An emergency backup power generation system includes a housing comprising a main body portion, a top cap, and a bottom cap. Inner and outer surfaces and the main body portion, the top cap, and the bottom cap define a generally hollow interior volume within the inner... | 10/30/2007 |
| 7270513 | Apparatus and method for generating power from moving water Apparatus for generating power from a water current in a body of water comprises a longitudinally extending flotation platform for maintaining the apparatus afloat in the body of water and a water turbine operatively carried by the platform for generating power in r... | 09/18/2007 |
| 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 |
| 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 |
| 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 |
| 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 |
| 7008171 | Modified Savonius rotor A novel modification of a Savonius rotor used as a wind turbine provides an exhaust channel in each vane. The vane of the modified Savonius rotor is formed into an “S” shape. The air that enters a given end of the vane exits that end through the new exhaust chan... | 03/07/2006 |
| 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 |
| 6995259 | Method for the chemical synthesis of oligonucleotides The present invention features novel compositions, linkers, derivatized solid supports, and methods for the efficient solid phase synthesis of oligonucleotides, including RNA, DNA, RNA-DNA chimeras, and analogs thereof. ... | 02/07/2006 |
| 6955461 | Tickler for slurry reactors and tanks The present invention is directed to a tickler impeller and agitation system for use in stirred slurry reactors and storage tanks. The tickler impeller when mounted on a shaft is effective for providing an inward and downward swirl in a slurry medium which directs s... | 10/18/2005 |
| 6948910 | Spiral-based axial flow devices Axial flow devices using rigid spiral band profiled blade catenaries attached variably along and around an axially elongated profiled hub, of axially oriented profile section sequences 75 mapped relative to truncated cones-of-generation. Upon rotation and lub... | 09/27/2005 |
| 6921986 | Horizontal omni-directional windmill This invention relates to a horizontal omni-directional windmill comprising a rotor including an upper platform and a lower platform, a plurality of identically configured blades, wherein each of the blades is of a substantially aerodynamic configuration, each of th... | 07/26/2005 |
| 6899515 | Cross flow fan and air conditioner fitted with the same Cross flow fan having a plurality of unit fans assembled in succession with the unit fans twisted from each other at sides, and an air conditioner fitted with the same. The unit fan includes an annular rim, and a plurality of impellers arranged on a side of the rim ... | 05/31/2005 |
| 6893218 | Centrifugal blower unit In a centrifugal blower unit for an inside and outside air double-layer flow type vehicular air conditioner, a centrifugal fan includes a first fan and a second fan. The first fan and the second fan have plural first blades and second blades arranged about a rotatio... | 05/17/2005 |
| 6779992 | Composite heat-dissipating device A composite heat-dissipating device is provided for significantly increasing the number and size of blades so as to enhance the heat-dissipating performance. The composite heat-dissipating device is constructed by a plurality of impellers, each of which includes a p... | 08/24/2004 |
| 6666650 | Wind power facility with a verticle rotor The invention relates to a wind power facility with a vertical rotor for generating energy, wherein a three-blade rotor (5) operates according to the cross-flow principle. The outer admission surface construction (1) and the facility has the shape of a to... | 12/23/2003 |
| 6655918 | Impeller of axial-flow blower In an impeller of an axial-flow blower driven by an outer rotor type motor, the impeller is formed in sections so that individual impeller sections 5F and 5R can easily be formed by molding with an axial coupling type die, and also which are arranged in s... | 12/02/2003 |
| 6634784 | Mixing impeller device and method An impeller assembly is mountable onto a rotatable shaft that has a flange extending radially from the shaft and rotating with the shaft. The impeller has at least one blade pair member having two opposed blades and central hub portion having a hole there... | 10/21/2003 |
| 6345956 | Impeller of a blower having air-guiding ribs with geometrical configurations An air-guiding impeller for a blower. The impeller includes a rotary shaft adaptable for a motor, an annular frame, blades formed on the annular frame, and air-guiding ribs interconnected between the annular frame and the rotary shaft and inclined with re... | 02/12/2002 |
| 6053700 | Ducted turbine A turbine 400 has a central duct 410 which accelerates fluid passing through it and a blade configuration which retards the flow of fluid near the tips of the turbine. This structure results in a vortex having a higher fluid pressure behind the tips of th... | 04/25/2000 |
| 5988979 | Centrifugal blower wheel with an upwardly extending, smoothly contoured hub A centrifugal blower wheel having an indivisible prime number of peripherally spaced blades projecting upwardly from the top surface of a generally annular-shaped base plate. Each blade includes a tapered portion extending along an inside edge of the blad... | 11/23/1999 |
| 5827046 | Transverse fan, method of manufacturing the same and apparatus therefor A transverse fan includes a pair of end plates each having an annular shape, a plurality of blades annularly disposed between the end plates and a plurality of partition plates each having an annular shape and disposed at intermediate portions of the blad... | 10/27/1998 |
| 5611667 | Transverse fan A transverse fan in which a plurality of blades are disposed between disk- or ring-shaped end plates in a circumferential arrangement at fixed mounting pitches in a ring-shaped configuration. Partitions plates are disposed at intermediate portions in the ... | 03/18/1997 |
| 5482436 | High specific speed fan propeller having auxiliary blades A high specific speed fan propeller is provided which has a hub, at least two main blades and at least two auxiliary blades. The hub has an attachment device for connecting the propeller to a turning part. The at least two main blades are attached to the ... | 01/09/1996 |
| 5388956 | Fan assembly and method for reducing fan noise A fan assembly has a fan motor and first and second generally identical and spaced apart fans each rotationally attached to the fan motor to turn at the same rotational speed. Each fan has an equal number of generally identical fan blades and produces noi... | 02/14/1995 |
| 5266007 | Impeller for transverse fan A transverse fan impeller (30) having at least two modules (32). Each module is defined by an adjacent pair of partition disks (34) each perpendicularly centered on the rotational axis of the impeller. Blades (31) extend longitudinally between pairs of pa... | 11/30/1993 |
| 5238367 | Impeller assembly for aquarium power filter A water pump including a rotating impeller is located between the two filter chambers, and pumps water from the aquarium tank, via the inlet conduit, into a corridor which communicates with the two filter chambers. The impeller is constructed with relativ... | 08/24/1993 |
| 5096383 | Propeller blades A propeller for an aircraft or fan comprises an even number of propeller blades, at least six in number, which are unsymmetrically arranged around the axis of roation of the propeller in two circumferentially equidistantly spaced groups of at least three ... | 03/17/1992 |
| 5066195 | Propeller for aircraft or the like A propeller for an aircraft or a blower or fan, wherein the propeller blades are intended for operation at speeds characterized by blade tip Mach numbers in the range of about 0.4 to 0.8, comprises at least two pairs of diametrically opposed blades, the b... | 11/19/1991 |
| 4840540 | Propeller whose blades are provided with slats Directly driven propeller whose propeller blades are provided with slats and which is designed for a lower blade tip Mach number in order to reduce the propeller noise. The slats are rigidly connected to the propeller blades and the slat tips lie on a dia... | 06/20/1989 |
| 4729714 | Built-in fan In an axial fan whose fan wheel is retained in a tubular member by spokes, the blade edges of the individual fan blades which face the spokes are constructed geometrically different from one another.... | 03/08/1988 |
| 4687416 | Method and device for decreasing the flow resistance on wings particularly aerofoils and blades of turbomachines exposed to gas flux such as air A device and method for reducing the flow resistance of air foils utilizes one or more flow compressors on the leading edge of the foil. The gas flowing in front of the leading edge is compressed and is expanded on the upper surface of the wing so that th... | 08/18/1987 |
| 4676459 | Double propeller for propelling aircraft Double propeller for propelling aircraft, with two coaxially and axially offset propellers that can be driven separately by associated drive mechanisms through a central shaft and a hollow shaft. To reduce noise and maintain safe operation even when one p... | 06/30/1987 |
