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Match Document Document Title
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...
8851842 Retractable composite rotor blade assembly  
A retractable rotor blade for a flying vehicle is configured to undergo extension and retraction movement and includes an interlink assembly, a helical ribbon assembly for reinforcing the...
8821121 Speed regulatable rotor assembly for wind turbine  
A rotor assembly for a wind turbine includes a hub adapted to be carried by a shaft of the wind turbine, a plurality of prop arms extending from the hub, a plurality of blades carried by the...
8647063 Multi-element blade with aerodynamic profiles  
Provided is a multi-element rotor blade, including a primary element and at least one complimentary element, each having an aerodynamic profile. The primary element is joined by fastening elements...
8485782 Variable-diameter rotor with centrifugal forces compensation mechanism  
A variable-diameter rotor comprises a hub with a shaft and rotor blades, wherein each of the rotor blades comprises a radially internal blade part and a radially external blade part. In each of...
8459937 Unity wind power plant with vertical axis of rotation  
A wind power plant has a turbine with its axis of rotation (1) substantially at right angle to wind direction, and wings (2) protruding from the axis (1) and the wings (2) have their crossways...
8459948 Retractable composite rotor blade assembly  
A retractable rotor blade for a flying vehicle includes an interlink assembly having interconnected link base subassemblies, a helical ribbon assembly reinforcing the interlink assembly, and a...
8328516 Systems and methods of assembling a rotor blade extension for use in a wind turbine  
A method of assembling a blade extension assembly for use with a wind turbine. The method includes removing a tip end of a tip portion of a rotor blade and coupling a tip wall to the tip portion....
8152466 Centrifugal force actuated variable span helicopter rotor  
A variable diameter helicopter rotor and method of using are disclosed. The variable diameter helicopter rotor includes a rotor hub operable by helicopter controls at variable revolutions per...
8113778 Wind turbine blade stowage  
A wind turbine blade stowage arrangement includes a first section of the wind turbine blade nested at least partially inside a second section of the wind turbine blade; and a conformable spacer,...
8057159 Twin wind turbine power system  
This invention relates to a novel twin wind turbine power system. More particularly, this invention pertains to a twin wind turbine power system which has adjustable width blades, adjustable width...
8029241 Wind turbine rotor blade with aerodynamic winglet  
A wind turbine includes a plurality of rotor blades, with each blade having a root portion connected to a rotor hub and an airfoil portion extending radially outward from the rotor hub. The...
8021114 Self-adjusting wind turbine generator blade  
A self-adjusting blade for wind turbine generator or windmill will change width of blades according to wind speed to optimize efficiency. The windmill comprises a brace, rib tubes, cylinders,...
7994650 Rotor blade and wind energy installation  
A rotor blade for a wind energy installation, in which the rotor blade (22) is formed in a plurality of parts, preferably in two parts, with respect to the rotor blade longitudinal direction, in...
7985048 Folding rotor for an autogyro device  
In one embodiment, a folding rotor blade for an autogyro device comprises a plurality of connected rotor members. When the folding rotor blade is in a compressed state the folding rotor blade has...
7914258 Fluid mechanical converter  
The present teachings relate to a fluid mechanical converter having at least one energy-accumulator mass system that can be powered by a power drive. To provide a fluid mechanical converter, which...
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...
7246998 Mission replaceable rotor blade tip section  
A rotor blade includes a removable blade tip section which is mounted to an outboard rotor blade section by mechanically mounting a tip spar to a main blade spar with a spar interface section...
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...
7083377 System and method and for use in hydroelectric power station and hydroelectric power station employing same  
It is generally known in relation to hydroelectric power stations that, before the water impinges on the turbine of the hydroelectric power station and there delivers its energy to the turbine,...
6984110 Windmill blade and apparatus for generating power using the blade  
Disclosed is a wind power generating apparatus in which windmill blades are mounted in a multi-stage fashion to a rotating shaft while being spaced apart from one another to efficiently generate...
6752595 Propeller type windmill for power generation  
A plurality of wind turbine blades (3) are distributed equiangularly within a plane perpendicular to a horizontal rotating shaft (2) and around a hub (1) provided on the horizontal rotating shaft...
6726439 Retractable rotor blades for power generating wind and ocean current turbines and means for operating below set rotor torque limits  
A wind or water flow energy converter comprising a wind or water flow actuated rotor assembly. The rotor comprises a plurality of blades, wherein the blades of are variable in length to provide a...
6655915 Drive system for the retraction/extension of variable diameter rotor systems  
A drive system for a variable diameter rotor (VDR) system includes a plurality of rotor blade assemblies with inner and outer rotor blade segments. The outer blade segment being telescopically...
6589017 Aircraft airfoil assembly and method  
An aircraft rotatable airfoil assembly in the nature of a helicopter machine and having two airfoils diametrically disposed about an axis of rotation. Air baffles are mounted on the radially inner...
6568906 Conformal sliding bearing  
A conformal bearing assembly includes an bearing housing, an elastomeric member and a bearing element. The bearing assembly is mounted between and inner and outer telescopic member. The...
6547519 Blower impeller apparatus with pivotable blades  
Blower designs for vented enclosures include an impeller having a plurality of blades. The impeller includes a plurality of blades pivotably coupled to an impeller body. The blades pivot to enable...
6030177 Drive system for a variable diameter tilt rotor  
A drive system for a variable diameter rotor system that includes a plurality of rotor blade assemblies with inner and outer blade segments. The outer blade segment being telescopically mounted to...
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...
5848538 Oil and refrigerant pump for centrifugal chiller  
A single motor drives both oil and refrigerant pumps in a refrigeration chiller, the motor and oil pump being disposed in the chiller's oil supply tank and the refrigerant pump being disposed...
5642982 Retraction/extension mechanism for variable diameter rotors  
A retraction/extension mechanism (70) for a Variable Diameter Rotor system (10), the Variable Diameter Rotor system (10) having a plurality of rotor blade assemblies (16) mounted to and rotating...
5310314 Directional control system for rotary wing aircraft  
A tip brake unit for installation in tip portions of rotor blades of rotary wing aircraft having a plurality of load-carrying rotors has a frame of a size and shape for installation in a tip...
5096378 Control of a wind turbine  
A wind turbine generator blade includes a movable front portion, extending from the faster-moving blade tip in a span-wise direction along the blade, and mounted on a pivot axis permitting the...
4789297 Enclosed wind device mechanism with eccentric rotor shaft  
A wind drive mechanism (10), comprising a housing (16) with a wind entry opening (25) and a wind outlet opening (26). In the housing (16) a rotor (30) is arranged with a vertically extending rotor...
4335996 Windmill construction  
Opposing windmill airfoil blades extend from a central hub and are connected thereto by a pair of cables secured to the inner ends of the blades and which each freely engages through the opposite...
4293274 Vertical axis wind turbine for generating usable energy  
A wind turbine for converting wind forces into usable energy has a main shaft rotatably mounted in the axis of rotation for the wind turbine, and a pair of coacting complementary longitudinally...
4162053 Brake device for rotating body  
A brake device for retarding linear and rotative movement of a load carrying unit after ejection from an in-flight projectile, wherein a container encloses the unit and includes a plurality of...
4142697 Mechanism for synchronously varying diameter of a plurality of rotors and for limiting the diameters thereof  
A plurality of variable diameter rotors with mechanism for varying the diameter of the rotors synchronously, and including mechanism to limit the diameter of the rotors.
4137010 Constant lift rotor for a heavier than air craft  
A rotor blade extended radially from a hub, characterized by an elongated spar and a plurality of axially aligned shells pivotally mounted on the spar, each having an aerodynamic center located in...
4029435 Retractable blade for a helicopter rotor  
A helicopter rotor having retractable blades each having a three dimensional truss including flexible cables which connect a blade member with a pitch member directly secured to a rotor hub, the...
3990808 Inflatable blower  
A centrifugal blower is disclosed wherein the impeller blades are made of a pliable, flexible, uniformly apertured sheeting made, for example, of plastic, affixed by a flexible support system, to...
3887817 Power generating device  
A power generating device comprises a continuous elongated flexible loop member having opposite loop ends and adapted to be suspended in a current of flowing fluid. The loop member is trained...
3814351 COAXIAL ROTOR YAW CONTROL  
A helicopter has coaxial counterrotating rotors having telescoping blade tip portions which are normally partially extended. Pilot operated means is provided for differentially extending and...
3762668 SINGLE PASSENGER FLEXIBLE ROTOR AIRCRAFT  
A personal aircraft vehicle includes a compartment having a platform on which the single operator stands and a drive system which includes jet engines located at the tips of flexible, extensible...
3637168 FLEXIBLE BLADE RETRACTABLE ROTOR AIRCRAFT  
A compound helicopter-type aircraft with a fixed wing and forward propulsion means, and incorporating a rotor having flexible blades which are wound up on reels and enclosed in the aircraft when...
3633850 FLEXIBLE SAIL ROTOR DEVICES  
A launched, self-sustaining station-keeping vehicle is maintained in flight by flexible rotor blades deployed and tensioned by the centrifugal forces acting on a mass (which takes the form of a...
3321020 Helicopter rotor  
3249160 Rotor blade construction for aircraft  
3188020 Rotor blade and air vehicles embodying same  
3120275 Rotor construction  

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