A machine and process to compress ambient air using natural swell of ocean waves to store energy. The devise is a bi-directional air pump operated by ocean wave power of water buoyancy as well as earth gravity in a pressure vessel using a piston. The machine uses a large surface area as float connected by a rod to a small area as piston, housed in a pressure vessel to multiply compression of air. The compression of air is directly proportional to the respective surface areas of float to the piston attached with a rod inside the pressure vessel. An array of similar machines can be employed to multiply potential energy output.

A reactive blade turbine system works vertically, horizontally, or at an angle and clockwise or counterclockwise according to blade angle and locking position and adjusts to variations in fluid flow such as changes in tidal currents to generate power more efficiently regardless of direction of fluid flow.

An arrangement for generating energy made up of at least two rotating bodies of revolution partially immersed in a dynamic fluid. The at least two rotating bodies of revolution have their longitudinal axis of rotation located perpendicularly to the flow of the fluid, and are further associated to support means and to drive means, being immersed about 30% of their diameter. One of the at least two rotating bodies of revolution is located upstream of said dynamic fluid with its longitudinal axis of rotation located in a longitudinal slider of the support means with the possibility of translation and variable rotation speed. The other of the at least two rotating bodies of revolution is located downstream of the dynamic fluid, with its longitudinal axis of rotation being attached to the support means, and with a rotation synchronized with the flow speed of the dynamic fluid.

An assembly includes a transformer tank that is arranged in a nacelle of a wind turbine, wherein the transformer tank is configured to be filled with a gas or a liquid to cool the active part of the transformer and the active part is enclosed by the transformer tank in a liquid-tight or gas-tight manner, such that use of the transformer tank as a reinforcement or a bracing of the steel construction of the nacelle with as little additional material expenditure as possible for the transformer is facilitated by integrating the transformer tank into the mechanical support structure of the nacelle such that the transformer tank forms a part of the mechanical support structure of the nacelle and by providing at least one bracing in the interior of the transformer tank, where bracing connects mutually opposing wall regions of the transformer tank.

A stowable generator device including a housing defining at least one storage chamber having an opening. A closure element is configured to selectively cover and uncover the opening. Support structure is disposed within the storage chamber in a collapsed position and is selectively extendable through the opening into an expanded position when the closure element is moved away from the opening. At least one energy generating unit is connected to the support structure. The support structure and the generating unit are configured to reversibly stow inside the housing in the collapsed position.

A modular wave energy converter includes: a forward attachment frame; forward guide rails coupled to the forward attachment frame; a forward paddle coupled to the forward guide rails; and one or more forward tethers coupled to the forward paddle and the shaft. A combination of heave and surge forces from waves of water causes the forward paddle moves up and down the forward guide rails. The movement of the forward paddle moves the one or more forward tethers. The movement of the one or more forward tethers causes the shaft to rotate via the rotation of winches. The winches are configured with a one-way clutch, which allows the shaft to rotate in a first direction but not a second. The converter has the same structure on the aft side, including an aft paddle. The forward and aft paddles are positioned vertically or inclined.

An oscillating fluid energy capturing assembly, including at least one hinged propeller assembly, each hinged propellor assembly of the at least one hinged propeller assembly including a driveshaft including a first end and a second end, a first plurality of blades pivotably connected to the first end, and a second plurality of blades pivotably connected to the second end.

Ceiling fans typically include a motor including a rotor and a stator, blades, a downrod, and a mounting assembly for suspending the fan from a structure. The mounting assembly includes fasteners and brackets to secure the ceiling fan to the structure. The bracket receiving the downrod is fastened to a plate that is secured to the ceiling.

A tidal energy converter has a pivoting lever that moves in response to tidal fluid moving other elements on the converter. The pivoting lever can be operatively coupled with an electricity generator to produce electricity. Namely, the pivoting lever may be coupled to an air source and compress the air to create a compressed air. The compressed air may be used to power an electricity generator. The pivoting lever is moved by fluid that empties from a feed tank to a spill tank. There may be one or more ballast tanks connected to the feed tank and/or the spill tank. Some of the feed tanks work in opposing unison with one of the ballast tanks.

Systems and methods disclosed herein provide a tidal power generator including a first container, a second container coupled to the first container, a frame pivotably coupled to the second container, a first valve, associated with the second container, configured to selectively control ingress of a first volume of a fluid into the second container, and a second valve, associated with the second container, configured to selectively control egress of a second volume of the fluid out of the second container.