Abstract: A method and device for collecting energy from wind includes an airfoil having an outer surface defining a leading edge, a central section of greatest breadth adjacent to which a Bernoulli effect reduced pressure region results as an air flow passes over the airfoil from the leading edge to a trailing edge, an air passage contained within the outer surface, and a plurality of edge nozzles penetrating the outer surface within the section of greatest breadth. The edge nozzles each have an outlet orifice oriented toward the trailing edge and an inlet orifice feeding into the air passage and being positioned to communicate between the air passage and the Bernoulli effect reduced pressure region. The airfoil is positioned in the wind with the leading edge facing substantially into the wind and with the wind passing over the edge nozzles. An airflow-driven turbine capable of converting an airflow into rotational mechanical energy is also provided, the turbine being in airflow communication with the air passage.

Abstract: 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 wind. The wind is trapped momentarily on entering the turbine cavities. Air can be supplied to such cavities from a compressed air source driven by wave action on a body of water.

Abstract: 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 wind.

Abstract: A device including a flow unit generating a potential vortex having an inflow aperture and an outflow aperture, together with a turbine arranged in the direction of flow of the potential vortex. The flow unit comprises an outer hollow member having a plurality of flaps and plates at both ends, with one plate containing the outflow aperture, and an inner hollow member arranged concentrically of the outer hollow member. The built-up pressure acting on the outer hollow member opens some of the movable flaps and closes others, which generates a rotary flow. The rotary flow, while flowing tangentially into the inner hollow member, is accelerated further and forms a swirl flow which is directed outwardly by the vacuum at the outflow aperture and which, after having passed through the outflow aperture, is converted into the potential vortex by the shear forces of the parallel flows.

Abstract: A wind driven turbine installation has a rotatable enclosure with closable inlet and outlet openings. The rotatable enclosure includes a driving arrangement and a wind direction sensor arrangement that monitor the incident wind direction and align the enclosure such that the inlet opening is aligned with the prevailing wind direction. The inlet opening includes an acceleration passage which increases wind velocity and directs the wind to a wind driven turbine device disposed within the installation. The turbine device includes a converging inlet passage, a secondary inlet passage, and an exhaust passage. A turbine rotor is disposed within the turbine device such that wind entering the primary inlet drives the rotor in part by following rotor vanes, and in part by passing across the rotor vanes. Wind entering the secondary passage is redirected toward the primary inlet and drives the rotor in the forward direction.

Abstract: A vertical-axis, high-wind turbine for use with an electrical generator for producing power by converting the energy of wind currents into mechanical, rotational energy, which is then used to operate the electrical generator. Fixed, stationary stators, while providing significant structural integrity, direct currents having horizontal components into a rotor assembly, where the rotors of this assembly are responsive to the currents by imparting rotation upon a central vertical shaft. Both stators and rotors are designed with functional curved blades for greater efficiency in operation. In fact, the stators are designed with a double-curve which in many ways, discussed herein, perform at levels higher than either straight, or single-curved stators. The present turbine is not equipped with any braking system, or feathering system to withstand the high winds; instead, it is capable of actual operation and energy conversion of these high energy-potential winds.

Abstract: A wind turbine cross wind machine is disclosed, which comprises a circumferential arrangement of guide vanes (1) around a centrally located rotor (2) including a central aperture (3) in the middle of a circumferential arrangement of blades (2), where the guide vanes are capable of guiding the wind falling upon counter acting rotor blades towards the direction of rotor rotation, whatever direction the wind may be coming from, thereby offering a substantial improvement in this wind machine efficiency.Alternatively, the guide vanes (2 in FIG. 7) being of a uniform airfoil type they divert the airstream path by acting like an aerodynamic lens causing a uniform concentration of it within the encircled area, thus producing twin symmetrically convergent airpaths passing through the engine and causing a horizontal venturi effect to appear across the rotor blades with advantageous results on engine performance.

Abstract: A fluid-augmented free-vortex power generating apparatus (10) that is driven by either prevailing winds or water and which has a turbine (24) that includes a number of axially extending cup like sails (20) mounted on a freely rotating hub (22). A fluid mover (28) in the form of a fan or blower as would be used when the fluid medium is air or a water pump when the fluid medium is water, tangentially directs a flow of fluid under high velocity onto the turbine sails inducing rotation and creating an unconfined vortex around the apparatus (10). A power generator produces electrical energy from the rotation of the rotor which revolves due to the combined impingement of the fluid mover (28) and intensified regenerated circular fluid movement created by the artificially created unconfined vortex.

Abstract: A wind driven turbine installation has a rotatable enclosure with closable inlet and outlet openings. The rotatable enclosure includes a driving arrangement and a wind direction sensor arrangement that monitors the incident wind direction and aligns the enclosure such that the inlet opening is aligned with the prevailing wind direction. The inlet opening includes an acceleration passage which increases wind velocity and directs the wind to a wind driven turbine device disposed within the installation. The turbine device includes a converging inlet passage, a secondary inlet passage, and an exhaust passage. A turbine rotor is disposed within the turbine device such that wind entering the primary inlet drives the rotor in part by following rotor vanes, and in part by passing across the rotor vanes. Wind entering the secondary passage is redirected toward the primary inlet and drives the rotor in the forward direction.

Abstract: The present invention relates to a rotor driven by wind power with a vertical rotating axis and radial arms distributed at uniform angular intervals over its periphery which bear bodies with an aerodynamic profile such that one side of the profile exhibits a lower air resistance with a current at right angles than with a current from the opposite side.Known vertical rotors should be of simple construction and should be capable of being manufactured at low cost. At the same time their efficiency should be high enough for them to be used to generate wind power economically. To this end, the rotor of the generic type is improved such that the rotor arms consist of one or a plurality of loops in vertical planes with an aerodynamic profile, where the profile shape is maintained essentially uniform over the entire length of the loop.

Abstract: A wind turbine with a stationary tower and a set of turbine blades rotatably attached to the top and bottom of the tower. A set of upper and lower braces connects the turbine blades to prevent any sag or skewing of the turbine blades as they rotate about the tower. The wind turbine may also include a stationary shell attached to the tower and inside the sweep of the turbine blades, to direct the airflow toward the turbine blades at the shell periphery, thereby improving overall performance and efficiency of the turbine.

Abstract: A windmill includes a plurality of fan blade units pivotally mounted in a central vertical transmission shaft each unit having a right-leaf vertical fan blade and a left-leaf horizontal fan blade in which the vertical fan blade as rotated to the leeward can be feathered by a forward rotation of a driving motor to reduce its wind resistance during its leftward rotation towards the windward, and the horizontal fan blade when rotated to the windward can be vertically erected ready for receiving wind energy by a reverse rotation of the motor during its righward rotation towards the leeward for efficiently collecting the wind energy for driving the transmission shaft for power generation.

Abstract: 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 rotates about on axis parallel to but offset from an axis about which the big wheel rotates. The little wheel rotates within the big wheel. Flexible sails are fastened between masts of the big wheel and masts of the little wheel so that when the wheels rotate each sail is unfurled and extended during one phase of operation and said sail is folded upon itself during another phase of operation. When extended or stretched open, the sail derives power from the fluid current. When the sail is folded, it offers a reduced resistance to the fluid current into which said sail is moving.

Abstract: A windmill having a stator and a rotor. The rotor has the shape of a long convex blade having sharp edges and being symmetrical with respect to its longitudinal axis. The stator which surrounds and supports the rotor comprises a lower platform which acts as a base, an upper platform parallel to the lower platform and a set of vertical and also equally spaced vanes joining the two platforms. According to a first embodiment, each vane is formed of an outer stationary shutter joining the two platforms and of a movable inner shutter capable of pivoting about its longitudinal axis. In an other embodiment, the vanes are one-piece element and can pivot freely on posts of which the ends are secured to the two platforms. In either case, there is provided a control mechanism responsible for the angular orientation of the movable shutters or vanes.

Abstract: Wind power engine having a rotor (1) which is rotatable about a vertical axis and has at least three rotor blades (A, B, C) arranged substantially radially which subdivide the rotor (1) into equisized sectors. To improve the characteristics and the efficiency of the wind power engine the rotor blades (A, B, C) are vertically subdivided into several sub-blades (3, 4, 5) and between the sub-blades (3, 4, 5) vertical gaps (6) are arranged for the passage of air. In cross-section said sub-blades (3, 4, 5) are dish-shaped or trough-shaped, the end regions of the sub-blades being angles or bent oppositely to the direction of rotation of the rotor through about 30.degree..

Abstract: The invention relates to our energy conversion system for converting the kinetic energy possessed by the wind into mechanical energy. The objective is to produce a controlled, tornado like, turbulence around a turbine. This is accomplished by using a deflector to channel the air over a main body made up of five rotating wings which in turn deflect the air into small turbine rotatably connected to the wings.

Abstract: A runner type wind turbine designed to utilize maximum of the available energy carried by low speed stream. This turbine has a turbine disc which deflects and discharges a wind stream in radial and parallel direction relative to the disc; a rotor construction permits the disc and its power shaft to be arranged and assembled in a vertical or a horizontal position. The turbine includes a disc, mounted on a shaft located in central guides affixed to an outer stationary turbine stand. The disc mounts a plurality air blade shaped in such a way that the incoming air impinges on the blades radially, circumferentially and outwardly relative to the turbine disc.

Abstract: In a vertical axis wind generator incorporating a circular turbine supported by an uppermost part of an upstanding support, a stator surrounding and coaxial with the turbine comprises an upper annular body positioned adjacent and or above the upper end of the turbine and having an uppermost surface which over at least a part of its radial width is inclined downwardly towards the vertical axis, a lower annular body positioned adjacent and/or below the lower end of the turbine and, extending lengthwise between the annular bodies, a plurality of circumferentially spaced blades define the venturi. Preferably, the undersurface of the lower annular body over at least a part of its radial width is inclined upwardly towards the vertical axis. The wind energy convertor will convert into mechanical energy the energy of a wind blowing in any direction and is capable of self-starting, irrespective of the direction of the wind.

Abstract: The present invention discloses a windmill capable of utilizing a broad range of wind speeds, comprising, a central axial shaft, a first flywheel attached to the upper portion of said central axial shaft, a second flywheel attached to the lower portion of said central axial shaft, a plurality of rotor blades operably connected to said first flywheel and said axial shaft, a supporting structure for rotatably supporting said shaft, a top structure and a base structure, a plurality of stator blades movably fitted between said top structure and said base structure, said stator blades being capable of rotational, inward and outward movement relative to said axial shaft, and a plurality of wind processing blades rotatably fitted between said top structure and said base structure.