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8177510 |
Method and system for braking in a wind turbine
A braking system for a wind turbine is provided. The system includes one or more motors for driving a part of the wind turbine, a first group of brakes for braking the part of the wind turbine, and...
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8130112 |
Method of alarm mask generation and condition monitoring of wind turbines
In one aspect, an alarm mask for condition monitoring in a wind turbine is automatically generated. A reference data selecting definition is selected from a control definition repository in the...
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8096773 |
Vertical axis wind turbine
A vertical axis wind turbine has a stator shaft, an electrical generator, a rotating shaft and multiple blades. The electrical generator is rotatably mounted around the stator shaft. The rotating...
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8038402 |
Compact geared drive train
A drive train for a wind turbine is provided. The wind turbine includes a rotor hub and one or more blades. The drive train includes a first stage carrier connected to the rotor hub. The first...
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7959404 |
Wind turbine
A wind turbine for generating electricity has been developed. The turbine includes a housing for securement to a support. A wheel is mounted within the housing and is rotatable about a horizontal...
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7891946 |
Wind power plant and rotor blade adjusting drive therefor
The present invention relates to a rotor blade adjusting drive for adjusting the pitch angle of a rotor blade of a wind power plant, comprising a drive train which at the output end can be...
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7862292 |
Horizontal motion wave power generator
A paddle wheel-driven horizontal wave generator system which is situated on the ocean shore for converting shore waves to unidirectional rotational force for generating power. By the use of a pair...
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7811059 |
Variable angle oscillating fan
An adjusting mechanism for desired angle of an oscillating electric fan is disclosed. The adjusting knob is conveniently located about the top rear portion of the fan motor, adjacent the clutch...
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7809477 |
Method for starting up a wind energy plant after an operation stoppage and wind energy plant which can execute the method
A method for starting up a wind energy plant after an operation stoppage, wherein the wind energy plant has a gearbox in the drive train and an operation management which can control at least one...
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7762771 |
Device for driving a first part of a wind energy turbine with respect to a second part of the wind energy turbine
A device for driving a first part of a wind turbine with respect to a second part of the wind turbine includes a driving element for engagement with the first part. The device also includes a...
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7721434 |
Methods and apparatus for replacing objects on horizontal shafts in elevated locations
An apparatus for stabilizing a shaft in an essentially horizontal position while an anchoring object at one end of the shaft is replaced without removal of an object at the opposite end of the...
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7722323 |
Axial flow turbine with overspeed preventing device
An axial flow turbine motor is provided which includes a rotor with a peripheral row of drive blades and a peripheral band-shaped wall element radially clamped against the tops of the drive blades,...
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7637792 |
Propeller torque transmitting device
A shock absorber for a marine propulsion device is configured to provide an adapter, coupler and resilient device which can be assembled into a unit, or module, that can be inserted into a...
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7544045 |
Cooling tower fan locking apparatus
A mechanical locking apparatus is assembled to an existing cooling tower fan assembly and is operable to brake the drive shaft of the fan assembly to stop rotation of the fan and isolate the fan...
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7410344 |
Ram air turbine centrifugal brake
A brake system for a ram air turbine (RAT) causes the RAT to slow or lock if the RAT achieves an over-speed condition with a centrifugal force operated trigger system that actuates a compression...
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7381030 |
Wind turbine shroud
A vertical axis wind turbine assembly, such as a Savonius, typically mounted on a watercraft, utilizes a number of different shroud configurations to substantially preclude rotation when docked....
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7306426 |
Protection mechanism for flow inducing device
A rotary flow inducing device having a rotary flow inducing blade and a protection mechanism including a trigger to move the protection mechanism between an operational flow configuration and a...
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7168533 |
Rotor brake as well as rotor and rotary-wing aircraft with such a rotor brake
A rotor brake includes a braking force absorption element non-rotatably connected to a rotor shaft; a stationary brake actuator for actuating a braking force transmission element that is...
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6935841 |
Fan assembly
A fan assembly includes a vertical axis wind turbine (VAWT) which is coupled to an air extraction or air supply fan. The VAWT is located above and is coupled coaxially to the fan. The fan assembly...
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6910873 |
Self regulating rotor
A machine that is a self regulating rotor with a set of cups or vanes that are pivotally attached about a central axis such that they form a closed three dimensional shape when closed, and when...
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6872045 |
Apparatus and method for fluid drive conversion
A fluid drive conversion system having a plurality of flat foils rotatably connected to a vertical shaft such that the foils are generally vertical in position, pivot about a vertical axis, are a...
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6857846 |
Stackable vertical axis windmill
A stackable, vertical axis windmill comprised of a braced external frame that enables stacking of multiple windmill assemblies. Couplings are located on both ends of the vertical rotor shaft to...
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6799946 |
Propeller assembly
A propeller assembly includes an interchangeable drive sleeve, an inner hub, a biasing member forcing the drive sleeve into contact with the inner hub, and a propeller including an outer hub in...
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6551053 |
Hydro-electric generator
A hydro-electric generator for producing electricity in areas of flowing water. The hydro-electric generator includes a flotation device. An electric generator is mounted on the floatation device....
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6537029 |
Electric fan capable to rotate for 360 degrees
An electric fan capable to rotate for 360 degrees includes a control device consisting of a left and a right shell combined together. The shells have a L-shaped steel plate inside to fix a motor...
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6461212 |
Automatic start control and clutch of toy engine powered by high pressure gas
A starting device of a toy engine comprises a spring, a starting piece, and a unidirectional bevel gear. The motion of the spring between the two fulcrums serves to ensure that the control rod is...
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6428274 |
Drive mechanism for adjusting the rotor blades of wind power installations
A device for adjustment of rotor blades which are pivotally mounted on a rotor hub of a wind power plant, with a drive for turning the rotor blades and a lockout which is connected to each rotor...
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6422814 |
Fan brake for removable module
Fan brakes for decelerating blower impellers particularly for modular equipment enclosures are described. A module includes a blower having an impeller with a plurality of blades. The brake engages...
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6358009 |
Fan blade assembly and method of balancing the same
A method and apparatus are used to balance an open blade fan of the kind used with trucks, diesel engine driven generator sets, and the like. An apparatus is used to spin the fans and a vibration...
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6193464 |
Active brake control for rotor/wing aircraft
The present invention comprises a feedback-controlled braking apparatus that applies a modulated braking force that smoothly decelerates a rotating shaft such that it comes to rest at a precise...
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6161799 |
Rotor blade lock for rotary/wing aircraft
The present invention comprises an apparatus for locking both rotor blades of a rotor/wing aircraft at a common point to form a rigid wing having a uniform bilateral aerodynamic response. In one...
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6148605 |
Method and device for reversing the thrust of very high bypass ratio turbojet engines
A high bypass ratio turbojet engine comprising a fan rotated by the shaft of a low pressure turbine via a speed reducer is provided with a thrust reverser device by providing the speed reducer with...
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6146097 |
Fan blade assembly for use with a ceiling fan drive unit
A fan blade assembly for a ceiling fan has lightweight, oversized blades formed by a support frame with a blade covering material stretched over the frame. A lighting fixture attached to the...
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6099255 |
Fluid power storage device
A fluid power storage device is provided in which, the prime mover directly or through a slow-down gear train winds up a spring device having a latch attached therein. The spring device can be a...
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6077042 |
Helicopter rotor brake
A helicopter rotor brake having a disk connected angularly to a helicopter rotor; a brake caliper having friction members cooperating with the disk; and an actuating device for moving the brake...
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6077041 |
Reduction drive and torque-limiting clutch for autogyro aircraft
A rotary wing aircraft has an engine, an engine-driven shaft and a main rotor. A rotor drive shaft is mounted to the main rotor and extends substantially 90 degrees to the engine-driven shaft. A...
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6050790 |
Electric waving fan with oscillating multi-direction fan vane element
An electric waving fan includes a single air moving fan vane element, a motor for generating power, a transmission apparatus for converting the power to motion, and a power output assembly for...
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6022193 |
Propeller assembly for an underwater device
In an underwater device adapted to sink in water, the device having a proler disposed in a tail cone portion thereof and operable to rotate in a first direction to move the device toward a surface...
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6019578 |
Variable diameter rotor blade actuation system
A rotor blade actuation system is disclosed for controlling extension and retraction of an outboard blade section of a rotor blade by varying the speed and direction of rotation between a main...
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6000907 |
Fluid-activatable vane for a fluid turbine
A fluid-activatable vane is defined by a thin vane body having opposed narrow leading and trailing side edges and opposed substantially smooth large top and bottom surfaces. The body has a central...
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5921753 |
Anti-windmilling device
An anti windmilling device 10 for fan blades 103 including a housing member 20 adapted to be secured to the wire grid 101 of a fan 104. The housing member 20 rotatably supports a sail member 40...
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5908284 |
Marine propeller with tube shape shock absorbing means
A propeller is made up of a propelling unit having a plurality of blades, a driving unit for driving the propelling unit, and a plurality of deformable transmission units located between the...
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5855471 |
Helicopter rotor brake assembly
A helicopter rotor brake assembly for arresting rotational movement of a main rotor drive shaft, wherein the helicopter rotor brake assembly is mechanically interconnected with the main rotor drive...
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5800126 |
Swinging head gear shell of an electric fan
A swinging head gear shell for an electric fan is provided and includes a body and a cover respectively molded from reinforced engineering plastics. The body has a mounting plate for mounting with...
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5743712 |
Turbine support and energy tranformation
Apparatus for peripherally supporting the rotor of a fluid driven turbine and for power take-off of energy by transformation of peripheral speed of the rotor to use such as to drive one or more...
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5664418 |
Whirl-wind vertical axis wind and water turbine
A vertical axis wind turbine is supported by a frame held in place by an encircling series of crescent-shaped tubular deflector vanes. The vanes widen towards the turbine core, concentrating the...
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5601257 |
Air vehicle yaw control system
The yaw control in an air vehicle having counter rotating rotors is provided by selectively and controllably applying a frictional drag or braking force to drive gears for the two rotors. Each of...
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5591004 |
Turbine support and energy transformation
A support for peripherally supporting the rotor of a fluid driven turbine and for power take-off of energy by transformation of peripheral speed of the rotor to use such as to drive one or more...
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5582507 |
Automotive fan structure
The axial flow fan structure has an outer ring and an inner ring that establish an annular air passage. An odd-number of arms join the inner and outer rings together and at least one of the arms is...
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5572910 |
Application of face gears to helicopter transmissions
A helicopter transmission presenting at least a first reduction unit receiving motion from a respective engine on the helicopter; and a second reduction unit connected to the first reduction unit...
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