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Match Document Document Title
8979494 Vertical axis hinged sail wind energy machine  
An improved wind energy machine for capturing the wind to produce useful work, such as generating electricity. The wind energy machine has a rotating center hub with a center drive shaft and a...
8979493 Fluid pump  
The invention relates to a fluid pump, in particular liquid pump, with a rotor, with a rotor shaft (11) and with at least one rotor blade for delivering the fluid, wherein the rotor with regard to...
8702393 Blinking sail windmill with safety control  
A vertical axis windmill is disclosed which includes a set of frames attached via horizontal bars to a vertical axis of rotation, each frame comprising a plurality of swinging windows, each...
8681496 Cooling apparatuses, electronic device assemblies, and cooling assemblies using magnetic shape memory members  
Cooling apparatuses, electronic device assemblies, and cooling assemblies having a magnetic shape memory member are disclosed. In one embodiment, a cooling apparatus includes a first compliant...
8668456 Blade  
A turbomachine blade having features arranged to initiate bending of the leading edge towards the pressure surface upon impact of a foreign object on the leading edge. The features may be features...
8506257 Adjustable camber aerofoil  
The present invention relates to an aerofoil (20) comprising a leading edge portion (22) and a flexible thin-walled portion (26) that is rearwards of the leading edge portion, defining a cavity...
8439859 Catheter device  
The catheter device comprises a drive shaft connected to a motor, and a rotor mounted on the drive shaft at the distal end section. The rotor has a frame structure which is formed by a screw-like...
8430636 Wind turbine rotor assembly  
A rotor assembly for a wind turbine including at least one blade adapted to automatically adjust its shape as a function of rotational speed to create an efficient fluid dynamic profile over a...
8430637 Semi-rigid wind blade  
An airfoil 11 for attachment to a hub 13 of a windmill 15 or other turbomachine, the airfoil 11 comprises a leading rod 17 and a trailing rod 27, the leading rod 17 and trailing rod 27 preferably...
8272839 Oscillating energy capture mechanism  
Multiple pivots are mounted vertically or horizontally within a rotary or stationary support structure or platform. The pivots are interconnected via members, and between these pivots, a flexible...
8210885 Waterjet unit impeller  
A variable rating impeller (10) for the pump of a waterjet unit that is rotatably driven by an engine to generate a high velocity jet stream. The impeller (10) having a hub (12) mountable to a...
8142154 Oscillating energy capture mechanism  
Two or more pivots are mounted vertically or horizontally onto a rotary or stationary support structure or platform, and between these pivots, a flexible sheet of material is suspended. The...
8105010 Wind energy conversion apparatus  
A wind energy conversion apparatus includes a supporting structure. The apparatus further includes a shaft having a first and a second end, which is rotatably journalized in the supporting...
8043053 Self locking trim tab  
A trim tab assembly includes first and second shape memory alloy (SMA) actuators and a trim tab substrate which provide elastic/plastic locking in response to an induced strain actuation.
8011882 Vane assembly  
A vane assembly for a gas turbine engine, the assembly including a plurality of vanes 14 with an asymmetric organic metal/ceramic matrix composite lay up, such that when the vanes 14 are placed in...
7997870 Turbine rotor for electrical power generation  
An electrical generation device includes a turbine rotor for electrical power generation, preferably underwater, from moving fluid, preferably water currents or the wind. The turbine rotor...
7931435 Wind power megawatts producer  
A bamboo wind power megawatts producer is provided in which the surfaces of rotor blades capture and compress the laminar flowing wind through the turbulent rotor vortex wherein great amounts of...
7780416 Blinking sail windmill  
Four wide frames are fixed to a vertical axis. The frames have horizontal bars ten centimeters apart. On each horizontal bar, a sheet of cloth twenty centimeters high and as wide as the frame is...
7591635 Wind turbine  
Disclosed herein is a wind turbine. The wind turbine includes a support unit having a lower base block and a cylindrical protruding part. A rotary cylinder is rotatably supported by the protruding...
7488150 Vertical wind turbine system with adjustable inlet air scoop and exit drag curtain  
A wind driven vertical axis power generating system is disclosed. An air scoop directs air from the prevailing wind into an air turbine. An exit drag curtain provides for an efficient...
7396207 Wind turbine  
A wind turbine comprising: (1) a support portion; (2) a hub that is mounted to rotate adjacent the support portion; and (3) at least one turbine blade mounted adjacent the hub and that comprises...
7354246 Electronics cooling fan with collapsible fan blade  
An electronics cooling fan comprises at least one collapsible fan blade driven by centrifugal force to extend radially as the fan spins and driven by elastic force to retract as spinning slows or...
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...
7077628 Wind machine with independent fabric  
A wind machine comprises a plurality of fabrics that are removeably installed on a rotatable carrier. The carrier axis of rotation may be either horizontal or vertical. The carrier has pairs of...
7037074 Lightweight, foldable, and replaceable fabric fan blades  
A ceiling fan assembly is provided having a frame defining a plurality of fan blades, a replaceable one-piece fabric covering attached to the frame, and a frame holder that supports and positions...
7011503 Fan blade for allowing airflow with fan in failure condition  
A fan and a fan blade are provided for allowing airflow through the fan blade in a fan failure condition. The fan blade includes a peripheral member defining an opening. A flexible cover member is...
6957946 Kaleidoscopic wind machine  
A kaleidoscopic wind machine for visual entertainment and other uses. The framework of the wind machine includes a vertical mast and a horizontal axle that can swivel about the mast. One or more...
6926491 Vertical axis wind turbine with controlled gybing  
A device for generating electricity in which wind blowing from any direction causes the rotation of sails around a vertical tower. As the sails rotate the sails moving toward the wind are...
6913435 Integrated vane for use in wind or water and process for producing same  
In an integrated vane 1 for use in wind or water, main blades 3 arranged around an axial shaft 2 of the vane and support blades 4 for joining the main blades to the axial shaft are integrally...
6811377 Ceiling fan blade  
A ceiling fan blade comprises a cloth blade, a plurality of springs and an arctuated frame. The arctuated frame is provided with a protrusive shaft for cooperating with the springs. The cloth...
6669444 Fan or propeller, with shape memory  
A propeller or fan, in particular a cooling fan, such as for the radiator of a motor vehicle or electric equipment, for civil or industrial plants, comprising shape-memory actuator means to...
6402472 Sail-type windmill wheel  
A sail-type windmill wheel is provided in which the area of the wheel facing into the wind is adjusted by an automatic variation of the blade angle of the sails. The wind wheel comprises a hub...
6015263 Fluid moving device and associated method  
A fluid moving device (100) includes a rotatable assembly (101), and a plurality of fan blades (102-04) disposed circumferentially around and extending outward from rotatable assembly (101), at...
5993158 Method and apparatus for aeration using flexible blade impeller  
An impeller having flexible impeller blades with a stiffness which allows the blades to flex into a backward-curved impeller configuration at the maximum intended rotational speed of operation,...
5931639 Helicopter blade assembly adapted to permit rapid forward flight  
A helicopter blade assembly for permitting rapid forward flight in a helicopter having separate means for providing a forward impetus. The assembly has a set of rotatable blades attached to a...
5879131 Main rotor system for model helicopters  
A main rotor is provided for use on a model helicopter. The main rotor includes rotor blades having an inboard section and an outboard section. The inboard section includes a higher camber, thin,...
5868152 Rotating patio umbrella fan  
A rotating umbrella includes a canopy which serves a fan. The umbrella canopy is formed by a plurality of segmented petals extending radially outwardly in a fan-like fashion, and connected to a...
5765582 Table umbrella apparatus  
A table umbrella apparatus including a tubular support member, a hub rotatably mounted at an end of the tubular support member, a fan extending radially outwardly of the hub so as to be in the...
5727980 Decorative wind device  
A decorative wind device that rotates about a central point. The axis of rotation can vary depending upon several factors including the direction of the wind and the speed or intensity of the...
5584656 Flexible impeller for a vacuum cleaner  
A fan for a vacuum cleaner has a fan housing, motor and impeller. The fan housing has an inlet and outlet. The impeller has a hub and multiple flexible blades. This flexible blade fan provides...
5570997 Horizontal windmill with folding blades  
Windmill (10) having a plurality of hydrodynamic, folding blades (12, 14, 16 and 18) secured to a hub (64). The blades are propelled by wind current such that the windmill rotates about a central...
5462407 Ceiling fan blade and hub assembly  
A ceiling fan blade assembly which includes an annular hub structured for fixed securement to a fan motor for rotation therewith, and a pair of blade frames extending radially outwardly from...
5338156 Ceiling fan blade  
An improved blade for a ceiling fan including a blade frame and a blade plate, wherein the blade frame is a hollow circular frame composed of a male member and a female member engaged therewith....
5226805 Windmill having blades which alter their pitch angles automatically in response to both wind speed and load  
A windmill includes a hub assembly (13) connected to a shaft (3) and having a plurality of blades (6) extending therefrom. Each blade comprises an inner section (6a) hingeably connected to a hub...
5131805 Dual axis fluid current motor  
Apparatus and method for harnessing fluid energy from a fluid current and converting it into mechanical energy. The invention comprises a big wheel and a little wheel where the little wheel...
5110261 Fan blade  
A ceiling fan blade is provided having a generally rigid unitary frame, with three areas for secure attachment to a conventional blade iron providing three points of attachment. A flexible,...
4746271 Synthetic fan blade  
The invention pertains to a fan blade and a method for making a fan blade wherein the stresses within the blade material are substantially constant throughout the length of the blade and the...
4596367 Horizontal wind/water wheel with vertical lift a superior protype model  
A rotary fluid propelled device employing a natural theory of constriction and controlled redistribution to convert fluid flow to rotary mechanical energy. Two conical shell-shaped compartments...
4547126 Fan impeller with flexible blades  
A fan mechanism with a fan impeller having flexible blades is shown. The fan impeller is used on a rotatable shaft which includes at least one piece of flexible belting and a plurality of elongate...
4445817 Propeller construction  
A propeller formed from pliable sheet material with each blade being of looped configuration in plan view. An end segment of each blade is turned inwardly and attached to an inner segment of an...

Matches 1 - 50 out of 120 1 2 3 >