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7530790 |
Rotor blade folding system
A rotor blade folding system includes a bearing housing which supports a bearing and rotor blade spindle which folds relative the rotor hub assembly about a fold axis. The rotor blade folding...
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7494320 |
Rotor for passively stable helicopter
A rotor ( 10 ) that enables an aircraft to become passively stable in hover. The inner part of the rotor blades ( 11 ) have a pitch angle fixed relative to a reference plane perpendicular to the...
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7467923 |
Fluid flow energy conversion apparatus
Tidal forces used for generation of electrical power has long been a solution to a recognized need. A really practical device to convert the energy of the fluid flow through tidal inlets into...
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7442009 |
Driving device for raising or lowering an airfoil
A wind turbine assembly with a driving device for raising and lowering a wind turbine between a lower end and an upper end of a wind turbine tower comprises a guide member extending longitudinally...
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7416392 |
Stow abort mechanism for a ram air turbine
A stow abort mechanism for a ram air turbine (RAT) with a strut that rotates a turbine with associated blades from a stowed position to a deployment condition comprises a stow abort lock plate with...
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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...
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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...
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7338257 |
Device for interacting with a fluid moving relative to the device and vehicle including such a device
A device ( 10 ) for interacting with a fluid ( 12 ) moving relative to the device. The device comprises a body with an axis of rotation ( 22 ) and a periphery ( 24 ). The body is rotatable about...
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7326035 |
Device for attaching a moving blade to a turbine rotor disk in a turbomachine
An attachment device for attaching a blade to a turbine rotor disk in a turbomachine, the blade root forming a male portion engaged and held radially in a cavity of complementary shape in the rotor...
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7318702 |
River turbine
A water wheel assembly is disclosed and comprises a water wheel including a plate having a rotation axis and a plurality of circumferentially-spaced receivers, each including a first slit defined...
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7296974 |
Wind energy turbine
The invention relates to a wind turbine and to the installation of such a wind turbine, particularly offshore. When wind turbines are installed in the previously known manner, a tower of the wind...
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7207777 |
Methods of handling wind turbine blades and mounting said blades on a wind turbine, system and gripping unit for handling a wind turbine blade
The invention relates to methods of handling wind turbine blades and mounting said blades on a wind turbine, said method comprising the steps of lifting a wind turbine hub to the nacelle of wind...
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7204674 |
Rotor blade for a wind power installation
A rotor for a wind power installation having at least one rotor blade. The smaller the surface area on which the wind acts, that is to say in particular the rotor blade area, the correspondingly...
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7192252 |
Safety device for a wind turbine
The mast ( 2 ) of the wind turbine is formed by at least two segments ( 13, 15 ) articulated to one another so as to pivot between a straightened position and a folded position. The pivoting of the...
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7090550 |
Propeller with variable geometry and method for varying geometry of a propeller
The present invention broadly comprises a propeller having a blade assembly with a plurality of linking members operatively connected to change dimensions of the blade assembly as the linking...
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7077631 |
Ram air turbine with speed increasing gearbox
A ram air turbine power system includes a ram air turbine having a turbine shaft, turbine blades for rotating the turbine shaft; and an electrical generator or other power source device driven by a...
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6991431 |
Ceiling fan blade
The present invention relates to a ceiling fan blade capable of producing full wind pressure and much wind. The solution of the present invention is to form a front and a rear wind receiving...
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6863498 |
Blade spreading assembly for quick ceiling fan installation
A blade spreading assembly for quick ceiling fan installation is disclosed. The blade spreadingassembly comprises a fan rotor bracket attached to the fan rotor and operatively coupled to an arm...
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6860713 |
Fan with collapsible blades, redundant fan system, and related method
A redundant fan system for a computer includes two fans installed in series with at least one of the fans having collapsible blades. A fan system of this type reduces the fan inefficiency caused...
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6830430 |
Fan with a separable flying disc
A Frisbee™ fan comprises a fan body made from a fabric bordered by a flexible strip on the peripheral rim thereof and a folding plate clamping the fan body for generating a strong air flow. The...
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6695253 |
Method and apparatus for folding/unfolding the blades of a rotary-wing aircraft rotor
To fold/unfold blades of a rotor, at least one variable-length linear actuator is removably attached to two blades locked in the flight position. A first blade is unlocked, and the actuator is...
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6676376 |
Locking fan blade tongue and hub assembly
The present invention provides for an easily installed ceiling fan. The fan includes a quick-connect device for physically mounting the fan blades to a ceiling fan hub. The fan blades may be...
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6676379 |
Ram air turbine with speed increasing gearbox
A ram air turbine power system includes a ram air turbine having a turbine shaft, turbine blades for rotating the turbine shaft; and an electrical generator or other power source device driven by a...
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6652221 |
Water current turbine sleeve mounting
A flowing water actuatable turbine system, wherein the turbine system is mounted for operational co-operation with water current by means of an upstanding column/pile in such manner as to be...
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6634861 |
Power plant for propeller aircraft
A power plant for propeller aircraft has two propulsion devices, each having a propeller, an engine for powering the propeller, and a gear transmission interposed between the engine and the...
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6580179 |
Ram air turbine with high power density generator and self-contained fluid cooling loop
A ram air turbine system provides liquid cooling of its generator by employing a closed loop liquid cooling line originating from a pump in the gearbox of the system. In the preferred embodiment...
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6559370 |
Submarine countermeasure vehicle with folding propeller
A submarine countermeasure vehicle includes an elongated body for supporting a countermeasure device, and a propulsion assembly mounted on an after end of the body. The propulsion assembly includes...
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6503056 |
Heating device and method for deployable ram air turbine
The heating apparatus and method for the nose fairing of a rotating blade assembly has an electrical generator connected to a heating element attached to the interior of the forward end of the nose...
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6371726 |
Foldable propeller
A foldable propeller for a ship having a hub ( 2 ) for mounting on a drive shaft of the ship, and at least two skew-type blades ( 1 ), each of which is pivotably arranged in the hub ( 2 ) for...
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6364609 |
Wind turbine having ground winch pivot erection support structure
A Darrieus-type vertical axis wind turbine is disclosed. The turbine includes an erection hinge between the support structure and support structure anchor which permits assembly of the rotor shaft...
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6331099 |
Flexible hoses communicating with a deployable hydraulic power assembly
A hydraulic power assembly is comprised of a hydraulic pump being attached to and powered by a ram air turbine. A strut is rotatably attached to an aircraft by having one end mounted on a trunion,...
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6308632 |
Deployable folded propeller assembly for aerial projectiles
An apparatus for deploying a propeller assembly from a folded configuration to a deployed, operational configuration, the apparatus comprising a propeller assembly hub which in conjunction with a...
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6213712 |
Helicopter blade positioning mechanism for foldable rotor blades
An improved blade positioning mechanism for folding a helicopter blade attached to a pitch control housing permits a controlled folding of the main rotor blade for increased safety and decreased...
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6213716 |
Folding fan
Ready to hang ceiling fans that do not require any assembly from the shipping box. A first embodiment has foldable mounting arms for each of the fan blades so that an installer takes both the motor...
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6170779 |
Rotor pitch lock for rotary/wing aircraft
The present invention comprises an apparatus for locking the pitch axes of the rotor blades of a rotor/wing aircraft so as to form a rigid wing. In one embodiment of the present invention the rotor...
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6152693 |
Folding propeller
A propeller (1) for commercial vessels as well as sailing ships with an auxiliary engine, having a hub (2) and at least two propeller blades (1) which are pivotally mounted in the hub (2). The...
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6065933 |
Folding rotor blade/propeller drive and pitch control actuator
A propulsion blade retraction and pitch control apparatus includes a hollow primary drive shaft, a pitch control gear assembly mounted, within a propeller hub, to the primary drive shaft, a...
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6047924 |
Method of folding the blades of a main rotor of a rotary-wing aircraft, and apparatus for implementing the method
Once the rotor of a rotary-wing aircraft is held stationary in an indicated position, the method comprises steps consisting in placing the collective pitch control stick in a first predefined...
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6032899 |
Blade pitch locking device for a main rotor of a rotary-wing aircraft
The present invention relates to a device for locking the pitch of the blades of a main rotor of a rotary-wing aircraft in which each blade is firstly rotated about an axis of rotation of the rotor...
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6027309 |
Free-standing overhead fan apparatus
A free-standing overhead fan apparatus includes a stand and a fan mounted on the stand. The stand includes a base positioned on ground level and an elongated member extending upwardly from the...
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6017188 |
Patio table and pole fan combination
A patio table and fan combination. The device uses a fan mounted on a pole that passes through the center of the patio table. The pole also supports an umbrella that can be used for shade when the...
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5975849 |
Handle structure for a flexible fan
A handle structure for a flexible fan includes two corresponding holding brackets and two corresponding handle members. The holding brackets are provided at their inner sides with a plurality of...
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5782606 |
Device for folding a rotorcraft rotor blade
The folding device comprises a fitting pivoting on a cuff about a folding axis which is offset laterally thanks to two lateral bearings of the fitting journal-mounted about bushings retained in...
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5630705 |
Rotor construction for windmill
A device for converting wind flow energy into mechanical energy has a base construction and a rotor with an essentially horizontal axis mounted on the base construction. The rotor has a number of...
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5573373 |
Propellar having optimum efficiency in forward and rewarded navigation
A propeller in particular for a ship has blades each of which is pivotally arranged in the hub of the propeller so that the blade is capable of pivoting to and fro in an axial plane between forward...
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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...
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5498134 |
Hand-held electric fan
A cover assembly is attached to a shaft extending upward from a handle. The cover assembly includes a plurality of cross guards that cross in front of and behind the fan blade to prevent injury. A...
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5484120 |
Support strut for ram air driven turbine
The difficulty and expense of fabricating a support strut for a ram air driven turbine are reduced by providing an axially opening channel in a central portion of the strut. Blockage of a portion...
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5403217 |
Folding blade propeller
A folding blade propeller for a power vessel wherein the blades are synchronized in their pivotal movement as they pivot from one position to the other by flexible links. The flexible links are...
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5394016 |
Solar and wind energy generating system for a high rise building
A solar and wind energy generating system for mounting to a building comprises a wind generator system including at least an auger shaped air engaging member. A plurality of wind generators having...
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