Abstract: A device for adjusting an angle-of-attack (?) of blades in a lift-type vertical axis turbine comprising a vertical rotating axis, a rotatable cantilever support wing fixed on the vertical rotating axis, a wind rotor comprising a plurality of blades mounted on the cantilever support wing, at least one cam disposed along an axial direction of the vertical rotating axis, the axial direction of the cam being parallel to the rotating axis, and for any point in a contour line of the cam, the angle of attack ? being set according to the following formula: ?=???, wherein ? is the angle of attack; ? is an azimuth angle; ? is a rotating angle for blades; and ?, ?, and ? are preset values.

Abstract: A Savonius vertical axis wind turbine rotor has first and second curved vanes having remote substantially vertical edges widely spaced form each other, and proximate substantially vertical edges more closely horizontally spaced from each other and horizontally overlapping are associated with a substantially vertical central shaft construction. The shaft construction is operatively connected to the vanes and mounts the vanes and adjacent the proximate edges. The central shaft construction may comprise a perforated shaft (e.g. a single perforated shaft), or multiple shafts. In any event, the shaft construction, and mounting of the rotor vanes, allow, during use, spillover of wind from the proximate edge of one vane to another vane during powered rotation of the vanes in response to wind. The rotor is preferably omni-directional. The rotor may have a third set of vanes, and different vertically spaced sets of vanes circumferentially offset with respect to each other.

Abstract: A vertical axis multi-phased wind turbine power generating system is disclosed. An adjustable air scoop directs air from a first phase of the prevailing wind into an air turbine for efficient power generation. An exit section, which uses a second phase of the prevailing wind in combination with an optional and adjustable exit section drag curtain or barrier, provides for efficient re-entrainment of this first stage of power generating air back into the downstream prevailing wind. The adjustable air scoop and adjustable exit drag curtain or barrier, where utilized, is automatically rotated in a self correcting manner to be suitably and optimally oriented to the prevailing wind direction. The design provides for a second stage of power generation to be accomplished by additionally utilizing a portion of the second phase of prevailing wind to directly or indirectly drive the turbine in a second stage of power production.

Abstract: A vertical axis wind turbine having a plurality of blades spaced from a rotatable around a rotor shaft vertical to the ground. The plurality of blades are arranged in a helical pattern about the rotor shaft. Each blade is flexible to move in response to wind and has a top, bottom, leading edge, and trailing edge wherein the leading edge is in the shape of an airfoil. A hub having a plurality of blade attachment rods radially extending from the rotor wherein in one blade is secured to one of the attachment arms. The hub has a plurality of attachment rods radially extending from the rotor wherein one blade is secured to one of the attachment rods near the center and wherein the top of each blade is closer to the rotor than the bottom of each blade.

Abstract: A method and apparatus (10) for extracting energy from flowing fluids using a diffuser (11) which has side walls (14) formed from a series of aerofoil section members (15) with gaps (29) provided between the leading and trailing ends of the members (15) to allow introduction of fluid from outside of the diffuser (11) into the diffuser flow passage (16) such that increased energy can be extracted from the flowing fluid by a prime mover (20) located in the flow passage (16).

Abstract: A VAWT wind engine includes a support structure, an articulating rotor mounted on the support structure for rotation about a vertically extending axis, and at least one airfoil on the rotor for rotor-powering purposes. The articulating rotor is mounted in a manner enabling tilting movement of the rotor during rotation so that the airfoil produces rotor rotation and rotor tilt as the airfoil orbits the rotational axis. At least one mechanical linkage is included to actively vary airfoil pitch according to rotor tilt. The partially articulating rotor of a teetering-rotor embodiment seesaws up and down about a horizontally extending pivotal axis. The fully articulating rotor of another embodiment supports three airfoils as it tilts in any direction by virtue of a gimbal or other rotor hub assembly providing a 360-degree swiveling action, while furling hinges help protect the airfoils against damaging winds during wind engine shutdown.

Abstract: A cantilevered power generation system and the support therefor comprising a clamping frame with first and second jaws that are relatively moveable and which permits the system to be mounted to a support located on or adjacent a shore line or water way so that power generation apparatus supported within the system can be positioned in the moving flow of water to generate power. The first and second jaws of the clamping frame support allows the power generation apparatus to be mounted adjacent a moving waterway and removed, as well as movable from one location to another and also allows the power generation apparatus to be raised thus permitting the repair and/or replacement of parts.

Abstract: A pyramid-like structure consisting of a base and 3 or more side frames, each side frame forming an angle to the base. The pyramid-like structure having an enclosed space within and including a way to collect solar energy and to collect and transfer thermal energy from the sun; air suction mechanisms to take surrounding air into the enclosed space; a plurality of wind turbines; a Main Thermal Reservoir to take in and hold heat transfer medium, which is heated therein and then pumped to the top day tanks. The heat transfer medium is heated by a Heat Absorption and Transfer Layer through a network of pipes on the side frame back to the Main Thermal Reservoir, wherein thermal energy is collected, absorbed and transferred to the enclosed space of the pyramid, heating the enclosed space and within the air suction means, causing a temperature differential between the surrounding air and heated air inside the enclosed space of the pyramid to create a continuous flow of the heated air to turn the wind turbines.

Abstract: A vertical axis type wind power station and a blade manufacturing process, which can stabilize the turning motions of blades and can raise the power generation efficiency by lightening the blades to smoothen the turning motions of the blades; a structure and method for mounting the wind-driven device of a wind power station, by which the wind-driven device can be easily disposed at the upper portion of a building; and a windbreak wind power plant for breaking the wind by using the vertical axis type wind power stations or wind-driven devices arranged along the shoreline or the like.

Abstract: A turbine generator system, having: a rotatable base; and a plurality of rotor vanes extending from the rotatable base, wherein each of the rotor vanes have helical tapered inner and outer surfaces, and wherein each of the rotor vanes is curved to catch flow perpendicular to the axis of rotation of the rotatable base and to direct the flow into a vortical flow between the inner surfaces of the rotor vanes.

Abstract: A high efficiency vertical axis wind turbine includes an optimized blade shape for increased torque output. The shape of the optimized profile includes a camber portion at a leading edge region of the blade with a maximum height to chord ratio (Y/C) at when the non-dimensional chord length (X/C) is approximately one third. An intermediate region follows the leading edge region and is characterized by a shallow convex region, followed by a flow reattachment surface at the trailing edge region characterized by a second concave region and a local maximum of the height to chord ratio at approximately four fifths of the non-dimensional chord length.

Abstract: Disclosed are various embodiments of cross-wind turbines that are capable of providing high efficiencies over a wide range of wind velocities. An airfoil stator causes wind to accelerate along its surface and creates a low pressure area on the leading face of the rotor blade during the power stroke. A blocking stator blocks wind from impeding the movement of the rotor blades during the return cycle and directs wind onto the trailing face of the rotor blades during the power cycle. A large pressure differential is created between the leading face of the rotor blade and the trailing face of the rotor blade during the power cycle which creates a large amount of force that rotates the rotor blade about the central shaft. In some embodiments, gaps are provided between the inside edge of the rotor blade and a stationary shaft which vents wind collected by the rotor blade during certain portions of the rotation cycle.

Abstract: A Savonius three bladed vertical axis wind turbine rotor has operational characteristics superior to those of conventional three bladed rotors. The blades have high curvature and a high skew factor, for example a curvature of greater than 7:1 (e.g. 2:1-5:1), and a skew factor of greater than 0.6 (e.g. 0.78-0.9). The rotor also includes at least one vertical shaft, the blades operatively connected to the shaft. The rotor typically has an aspect ratio of at least 2:1. The rotor typically has a maximum power coefficient (Cp) of at least twice that of an otherwise identical rotor with a skew factor of 0.5 or less. The rotor can drive a generator with a drive which automatically increases the effective gear ratio as the rotational speed of the rotor increases; or the rotor can be connected to a propeller of a multihull wind powered boat.

Abstract: The invention relates to a management system for the operation of a wind turbine, which regulates the power output of the turbine. The wind turbine includes a rotor with at least one rotor blade that is positioned at an adjustable angle to the rotor. The management system regulates the rotor speed within a predefined wind speed range by varying the rotor blade angle in order to set a nominal output and reduces the output in excess of a defined wind-speed-dependent threshold value. The threshold value is a defined rotor blade limiting angle.

Abstract: The present invention relates to a windmill device rotating by a wind power. More particularly, to efficiently obtain rotating energy irrespective of a wind direction, the present invention is firstly characterized in that assuming that an outermost radius as a distance between the remotest position of each blade from the center of a vertical shaft and the vertical shaft is r1, an innermost radius as a distance between the nearest position of each blade to the vertical shaft and the vertical shaft is r2, and the angle (rad) of an arbitrary position r in an inner peripheral surface of the cross-section of the blade by regarding a line segment for connecting the remotest position from the vertical shaft to the vertical shaft as a reference is t (in this case, 0<=t<=2?/3), the form of the inner peripheral surface in the cross-section of each of the three blades satisfies a following formula: r=(r1?r2)×((t?2?/3)×2)/(2?/3)×2+r2.

Abstract: A wind power plant includes four main elements: a foundation (29), at least one supporting structure (21), a carrying construction (23) having a vertical axis (25) and being rotatable around the vertical axis, and at least one rotor (45), (49), (52) positioned on the carrying construction. The rotors can have horizontal, vertical, and inclined axes of rotation in different combinations. Each rotor has at least two blades (53) arranged along its axis of rotation. Since the rotors used in the invention have a small diameter, the wind power plant can produce energy under high and low wind speeds, consequently producing more energy per year than known wind turbines. Also, because the rotors have rectilinear blades for their manufacture expensive composite materials and complicated expensive equipment are not required. For these reasons the wind power plant of this invention will produce energy at lower cost.

Abstract: Disclosed are various embodiments of cross-wind turbines that are capable of providing high efficiencies over a wide range of wind velocities. An airfoil stator causes wind to accelerate along its surface and creates a low pressure area on the leading face of the rotor blade during the power stroke. A blocking stator blocks wind from impeding the movement of the rotor blades during the return cycle and directs wind onto the trailing face of the rotor blades during the power cycle. A large pressure differential is created between the leading face of the rotor blade and the trailing face of the rotor blade during the power cycle which creates a large amount of force that rotates the rotor blade about the central shaft. In some embodiments, gaps are provided between the inside edge of the rotor blade and a stationary shaft which vents wind collected by the rotor blade during certain portions of the rotation cycle.

Abstract: A reactive turbine, each blade of which approximates a helical shape that is constructed with readily available conventional manufacturing techniques. The blades are constructed in discrete straight sections that, when joined, approximate a helix or any other efficient turbine shape. Each section is manufactured with the well known and readily available machine shop techniques of shaping, forming, and joining with welds or fasteners.

Abstract: A windmill 10 includes a frame 11 and a rotor 12 provided rotatively around the vertical shaft center. The rotor includes bosses 23, 24 located above and below, plural transversal blades 25 extending radially from the bosses, longitudinal blades 26 held by the front edges of the transversal blades 25 of both above and below bosses. The frame includes bearing 19, 20 supporting the bosses 23, 24 of the rotor rotatively around the vertical shaft center, spokes 17 provided radially supporting the bearing, and legs 15 holding the spoke 17 away from the ground. In the lower bearing 20, a generator connected to the boss 24 of the rotor 12 is accommodated.

Abstract: A vertical shaft driving device wherein a plurality of rotary blades (8a, 8b, 8c and 8d) each including a blade (10) supported on a planetary shaft are equally arranged circumferentially of a central shaft (12) and capable of orbital motion integrally with the central shaft (12), and wherein the rotary blades are arranged in a multipoint intersection form, in which blade faces of the blades (10) are obliquely disposed with respect to radial directions with a center at the central shaft (12). By arranging the blades (10) in the multipoint intersection form, it is possible to provide the vertical shaft driving device, in which air flows or water flows can be efficiently utilized to obtain a great output power.

Abstract: A guided fluid driven turbine to upgrade the efficiency in converting fluid kinetics into rotation kinetics by having a specific directional guide unit adapted to a fluid driven turbine for the fluid to be guided the open-end, specific directional guide unit extending from its head along the load side of the turbine, thus to change the fluid pressure on the load surface of the turbine.

Abstract: 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 first and second arms that support opposite ends of a fabric net. Side strands of the net may be reinforced. Each net has a loop that is supported on one carrier arm and a piece of material that is supported on the second carrier arm. The fabric piece of material has holes that receive associated studs on the carrier second arm, which is turnable. By turning the carrier second arm, a tension is imparted to the fabric. The carrier second arm is lockable to maintain the tension. Multiple panels are connected to the net for pivoting between closed and open positions. The panels resist the wind when they are in the closed position.

Abstract: A wind energy machine has four rotor chambers formed by perpendicular walls. Each rotor chamber has an intake portion, a reversal portion, a parallel portion, and an exhaust portion. Air flow is reversed in each chamber for every 90 degrees of rotation, such that the intake portion becomes an exhaust and the exhaust portion becomes and inlet.

Abstract: A wind power generator has a windmill for rotating the generator. The windmill includes a main vertical shaft, a rotor, and a wind-receiving blade. The rotor, fixed horizontally at the upper end of the main vertical shaft, comprises a flywheel, and a plurality of wind-receiving blades is spaced equally on the circumference of the rotor. The rotor gives kinetic energy by rotation inertia to the windmill. The wind-receiving blade is excellent in bending properties, and even when it receives breeze, the main vertical shaft is rotated with the principle of leverage.

Abstract: 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 channel into the freestream. A plurality of modified Savonius rotors are stacked one on top of the other for self-starting and greater power output. The outer surfaces of the entire assembly may be coated with photo voltaic cell material for additional energy production. In one embodiment of the invention, a cone shaped solar collector is placed on top of the entire modified Savonius rotor assembly.

Abstract: The present invention provides a structure comprising a blade attachment, a blade structure, an integrated driving shaft/generator for a wind system such as a vertical axis windmill, and a self erecting structure for such a wind system, together with an erecting method thereof.

Abstract: A vertical axis windmill has an immovable, hollow circumferential frame having a plurality of peripheral openings, and rotatable turbine arranged inside the frame and connectable to a generator of electric energy, the turbine having a plurality of vanes each having a working side and a non-working side, and a plurality of gate elements turnably connected with the frame for closing and opening of the openings of the frame by wind flowing substantially in a horizontal plane, the gate elements and the vanes of the turbine being formed so that at one side of the frame the wind opens the gate members by turning them in a predetermined direction, so that at one side the wind turns the gate elements so as to open corresponding ones of the openings, enters the frame through the corresponding opened openings and acts on the working side of corresponding ones of the vanes so as to rotate the turbine in the predetermined direction, while at the same time at the other side of the frame the wind closes other offset gate m

Abstract: A frost-resistant windmill is disclosed to provide supplemental power supply for use preferably in large cities. The frame of the windmill carrying a plurality of blades is made hollow defining a serpentine internal air pathway adapted for introduction of warm air from an external source to prevent freezing when used during winter months. A centrifugal speed adjustment system is provided to reduce rotation speed fluctuations of the load drive shaft when strong wind gusts are encountered. A speed adjustment weight is connected to the drive wheel through a cable such that the position of the drive wheel along the radius of the windmill is defined by an equilibrium between the pull force on the cable and the compression force of the spring urging the drive wheel towards the periphery the windmill.

Abstract: A flow-forced generator adapted with a turbo-charging deflection hood having at the peripheral of the vortex ring in the generator provided with an automated directional turbo-charging deflection hood for the air or fluid to produce turbo-charging results due to the reducing deflection of the hood, thus to increase the power of the generator in case of insufficient flow force.

Abstract: A horizontal wind generator comprises a horizontal windmill drivingly coupled to an electrical generator. The windmill includes a vertical drive shaft mounted for rotation in a base, with a plurality of wind drive units being mounted in wind catching positions at spaced axial locations along the drive shaft. The drive units comprise oppositely facing wind catching elements mounted on opposite sides of crossbars or frames non-rotatably attached to the pole. Multiple wind drive units are spaced along the pole and angularly displaced from adjacent units at regular intervals around the pole. Two or four spaced drive units are particularly desirable. Wind catcher elements formed of cup shaped bowls or split barrels are particularly effective and are inexpensive. The wind generator is drivingly attached to an electrical generator through a gear box and belt or chain drive mechanism. The horizontal windmill rotates the electrical generator within its desired speed range without any governor or speed control.

Abstract: A windmill. A wind intake section has wind guide plates, a wind inlet defined between two adjoining wind guide plates, and a wind inlet opening and closing device placed at the wind inlet. The wind inlet opening and closing device is opened by the wind flowing through the wind inlet into the windmill and closed by the wind flowing through the wind inlet out of the windmill. A power generating section is disposed to rotate rotors by the wind introduced into the windmill through the wind intake section and thereby generate electricity. A wind exhaust section has a wind outlet, and a wind outlet opening and closing device placed at the wind outlet. The wind outlet opening and closing device is opened by the wind flowing through the wind outlet out of the windmill and closed by the wind flowing through the wind outlet into the windmill.

Abstract: An advanced aerodynamic control system for a wind turbine including a drive shaft and blade. The control system includes an air control system coupled to a duct that extends from a first end toward a second end of the blade. A slot extends along a portion of a surface of the blade and is in communication with the duct. An instrument measures operating data of the wind turbine. A controller collects the operating data and compares the operating data to predetermined operating norms. The controller actuates the air control system to urge pressurized air into the duct and out of the slot at a specific air flow rate based upon the comparison between the operating data and predetermined operating norms. Control of the flow rate aids in capture of power from the wind flowing through a swept area of the wind turbine.

Abstract: 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 automatically feathered, and the sails moving away from the direction of the wind are prevented from being feathered by sail restraints. An inner sail restraint positions each sail so that the sail gybes at an earlier time than would otherwise occur. An outer sail restraint “catches” the sail as it gybes, capturing much of the energy of the gybe, adding additional rotational force. The device may be used to extract energy from the wind to produce electricity.

Abstract: A wind driven power generator is designed for mobile applications and locates the generator in a power housing at the base of the unit on an adjustable mounting arrangement. A lightweight high strength hollow column is supported in the power housing and supports a wind driven turbine at the opposite end of the column. A drive shaft within the column transfers power from the turbine to the generator and causes rotation thereof. Preferably the column provides the only support of the turbine and the column is not supported by guide wires.

Abstract: A turbine for production of electric energy in flowing water, comprising a number of shaped foils (5), each foil (5) being attached with a shaft (6) to a supporting structure (3) which is connected to the main shaft (2) of the turbine, and the shaft (6) of each foil (5) being mainly parallel with the main shaft (2). Each foil (5) is equipped with a step motor (8) and encoder (16), and the main shaft (2) is equipped with an encoder (18) and circuit breaker (19); an external measuring device (22) for measuring the speed of the water (11); and a computer (23) comprising a particular computer programme, to obtain that the signals from said encoders (16,18) and said measuring device (22) being processed in said computer (23), to achieve by assistance of said step motors (8) that the angle of a main surface of each foil (5) be individually regulated into a desired direction of attack relative to the direction of said flowing water (11).

Abstract: A wind rotor comprises a base, a rotor frame rotationally supported on the base for movement about a substantially vertical axis in one of a clockwise or counter clockwise direction, and a plurality of wind receiving vanes pivotally disposed on the rotor frame for movement about a substantially vertical axis in a clockwise and counter clockwise direction between a first closed position and a second open position. The movement of each vane from the first closed position to the second open position further being independent of the other vanes. A variable resistance damping mechanism assembly is disposed between each vane and the rotor frame. The variable resistance damping mechanism is configured to provide damping in both the clockwise and the counterclockwise directions, and to dampen a greater amount in one of the clockwise or counterclockwise directions than in the other.

Abstract: The invention is a system, device and method that captures wind energy and converts it into mechanical or electrical energy. In a system embodiment, the system transfers wind power to rotational energy. The system includes a wind capture means that uses wind to generate a mechanical force, an energy coupling means for transferring the mechanical force to a horizontally mountable wheel having a shaft coupled thereto, and an energy transfer system that couples the mechanical force from the shaft to a machine. In a device embodiment, a wheel capable of receiving wind power is provided. The wheel includes an airfoil support having a center portion, a stop location, and an airfoil location, and an airfoil is coupled to the airfoil support at the airfoil location. A method of driving the wheel uses a mounted airfoil to capture wind energy in an airflow, where the airfoil is mounted to a horizontally mountable wheel.

Abstract: A rotating display apparatus includes a support structure, a rotor mounted rotatably on the support structure for rotation about a vertically disposed rotational axis, and at least two (preferably more) wind-reactive elements on the rotor on which a user may display promotional, political, or other information, including using the shape of the wind-reactive elements as the displayed information. The wind-reactive elements (airfoil or non-airfoil) cause the rotor to rotate about the rotational axis in response to wind passing the rotating display apparatus. Each is free to pivot between a respective one of first and second pairs of stop positions as the rotor rotates about the rotational axis in order to self-align according to wind direction and impart rotational movement to the rotor, moving through five phases per revolution as they orbit the rotational axis.

Abstract: A vertical axis wind engine, also referred to as a vertical axis wind turbine (VAWT) includes a support structure, a rotor mounted rotatably on the support structure for rotation about a vertical axis, and at least one airfoil for causing the rotor to rotate about the vertical axis in response to wind passing the wind engine. The airfoil has vertically extending leading and trailing edges, an angle-of-attack axis extending horizontally through the leading and trailing edges, and a pivotal axis extending vertically intermediate the leading and trailing edges. The airfoil is mounted on the rotor for pivotal movement about the pivotal axis and the rotor includes components for limiting pivotal movement of the airfoil to first and second limits of pivotal movement.

Abstract: Turbine for flowing fluid, especially a turbine having a vertical power output shaft and formed with several wings projecting radially out from the power output shaft, which wings are rotatable over an angle of about 90° about horizontal shafts extending closely adjacent and along the trailing edge of the wing as seen in the flow direction, so that the wings, in an operative, first position, are positioned at right angle to the flowing fluid and in a second, non-operative position, are located horizontally or nearly horizontally and on plane with the flowing fluid. Each wing is formed with a fin portion for catching, at a very early stage of an operation cycle, flow medium passing by and to thereby initiate a pressing down of the wing to a portion at right angle to the flow medium for, as far as possible, maintaining the flow medium against the wing during the active moving path thereof.

Abstract: A coaxial wind turbine apparatus which includes a pair of rearward-mounted, spring-loaded fins to orient the air inlet opening to face the direction of the oncoming wind and close a damper panel or shutter array at the air inlet opening during very high wind conditions. Thereby, the pair of rearward-mounted, spring-loaded fins stabilizes the apparatus during strong ambient wind conditions and minimizes damage to the rotating turbine wheel in the presence of a strong wind.

Abstract: A turbine apparatus for providing support peripherally for a turbine rotor having either a vertical or horizontal axis of rotation. The present invention includes a plurality of blades distributed about the rotor, the blades across their width being shaped and angularly pitched to the flow of air therebetween to effect rotation of the rotor and the blades defining a peripheral boundary of the rotor. A support system for the blades includes a support ring concentric with the turbine axis of rotation and adjacent to the peripheral boundary of the rotor. A support mechanism for each blade includes a support assembly mounted in rotational supporting association with the support ring so that the mass and forces generated by each blade is substantially supported at the peripheral boundary of the rotor by the support ring.

Abstract: A rotational power transfer device includes a rotatable shaft, a plurality of arm structures attached to the shaft and extending radially outward from the shaft, a plurality of pin structures attached to and extending radially outward from the shaft such that the arm structures and the pin structures are aligned, a plurality of panel members attached to the arm structures and hanging downward therefrom, and an energy converting member for converting energy to electricity.

Abstract: A wind module includes a base plate, a turbine rotatably mounted on the base plate, a plurality of directional fins carried by the base plate peripherally adjacent said turbine, and a cover plate over the turbine and plurality of directional fins. The cover plate may have a domed shape. The plurality of vertical blades may be eight or more in number. In addition, each vertical blade may have an asymmetrical profile based on an aircraft wing which favors a double thrust and drag effect The directional fins may also have an asymmetrical profile to accelerate wind flow. The turbine, base plate, cover plate, and each of the directional fins is preferably integrally formed as a single piece to facilitate assembly.

Abstract: A wind turbine has an internal rotor carrying a plurality of turbine vanes in a circular path between an inlet opening and an exhaust opening. The inlet opening includes a stationary dividing vane that delivers one portion of the inlet airflow to a primary flowpath traversing the turbine vanes at two locations. The stationary dividing vane also delivers a second portion of the inlet airflow to a second flowpath which drives the turbine vanes as those vanes move in the part of the circular path from the exhaust opening toward the inlet opening. The turbine vanes may be mounted so as to have variable angular positions in different portions of the circular path. Turbine vane position can be controlled either magnetically or mechanically. Where vane position is varied magnetically, a plurality of permanent magnets with suitable controls adjust the turbine vane position. Where vane position is varied mechanically, a pair of cam arrangements may be employed.

Abstract: A vertical-axle wind power machine comprises a vertical axle, a plurality of jointed radial arms, a plurality of counterbalanced oblique blades at the support points thereof, a friction-rewarding rotary speed multiplying transmission, and an automatic rotary speed regulating means to be performed by either a wind-operated or an alternative digital controlled rotary speed regulating device; the combination of which provides the oblique blades with great sensitivity to the alternation of lee wind and head wind for automatic swinging to the most efficient lee angle at upstanding and overturned positions to sail nearly three quarters and streamline against the head wind resistance for the remaining quarter every circle of rotation, is able to convert the centripetal and centrifugal component forces to the same torque direction of the tangential component force from the same blade by an eccentric-guided angular bracket means and a fork-rooted radial arm, is able to offset the friction loss in the rotary speed mult

Abstract: A fully submersible apparatus for generating electricity from liquid flow as in an ocean or river current. A buoyant structure is fully submersible and has at least one pair of counter-rotating side-by-side motors with a plurality of angularly spaced radial vanes each having a plurality of rotatable subvanes such that current impinging upon the motor will impinge on a closed or solid vane to effect rotation of the motor and its shaft during a first phase of the rotational cycle and will impinge on open vanes for free passage therethrough on the return or second phase of rotation of the motor. Motors may also be provided with vanes in overlying and underlying relationship. An associated method is provided.

Abstract: Wind turbine apparatus is described for converting wind energy into electrical energy. The apparatus includes a rotatable central shaft, a plurality of rotor blades attached to the central shaft, and a plurality of convex airfoils spaced around the periphery of the rotor blades. The ratio of the number of rotor blades to the number of airfoils is at least 1.25 to 1. The size of the apparatus may vary, and the apparatus is useful in a variety of applications and environments. It is very efficient in converting wind energy to electrical energy. It may be operated even in very high wind conditions.

Abstract: 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 longitudinal axis and is substantially symmetrical on opposed sides of the axis. An attachment shaft is aligned with the central axis at a near end edge of the vane to secure two diametrically opposed vanes through a coupling wherein the vane will tilt along a 90.degree. arc from a horizontal plane to a vertical plane when exposed to a fluid flow. The two vanes form a propeller and are fixed to a respective end of the attachment shaft in a respective plane and offset 90.degree. from one another. A fluid actuatable torquing curved outer end edge portion is formed integral with the vane body in an outer end edge portion thereof and on a respective side of a central longitudinal axis.

Abstract: An aeroturbine is provided including a body, guide walls formed in the body for guiding the air, a rotor chamber mounted above the body, the rotor chamber housing a rotor therein, and control and gate flaps adjacent to the rotor chamber for controlling airflow. To improve airflow through the aeroturbine, an air chamber having its bottom formed by the control and gate flaps is provided below the rotor and the cover of the air chamber separating the air chamber from the rotor chamber is provided with adjustable nozzle channels.