Abstract: A system for converting wave energy into electricity is provided. The system includes a wave energy mechanical interface, a power take off coupled with the wave energy mechanical interface, and a generator coupled with the power take off. A controller is coupled with the power take off. The controller is configured to regulate impedance of energy transferred from the power take off to the generator.

Abstract: An apparatus has at least one buoyant member pivotally connectable to an adjacent member and configured for relative movement about a first axis of rotation when acted upon by one or more incident waves. At least one pair of bevel gears are arranged to rotate about the first axis of rotation upon relative movement between the pivotally connectable members. The bevel gears mesh with a corresponding pinion gear which is attached to a rotatable drive extending substantially perpendicularly from the first axis of rotation. The pair of bevel gears are configured to engage the pinion gear in opposite directions respectively to drive the pinion and rotatable shaft to rotate in a single direction regardless of the direction of movement of the pivotally connectable members. The rotatable drive shaft is connected to a generator for the generation of electricity when the apparatus is subjected to incident water waves.

Abstract: This invention discloses a method and a device for the capture of wave power, exploiting the maximum potential energy of each wave, based on obtaining the maximum imbalance possible between the Thrust Force and the Weight acting upon the capture elements on the passage of each wave, slowing and releasing them both at their high points and at their low points by means of the use of blocking systems, maximizing the submerged and emerged volumes of the next movement, likewise the travel during which the capture elements are accelerated due to the exploitation of their kinetic energy and their release in the transmission of efforts at the moments when the points of equilibrium between the rising and falling maximums are reached, thus generating an increase in the potential energy captured.

Abstract: In certain embodiments, an ocean wave energy extraction system including a wave energy panel may capture kinetic energy from an ocean wave as a force applied to a flexible membrane that drives the WEP back and forth in a reciprocating motion. The WEP dimensions may be selected so that the energy extracted from the wave is maximized and the added mass is minimized. A flexible membrane may be supported on two opposite edges by structural members that may pivot about a base. The shape of the flexible membrane may reciprocate in response to alternating horizontal wave orbital velocities. The force applied to the flexible membrane may be transmitted through the structural members to a power extraction device, such as a hydraulic pump or an electrical generator, that may be mounted to the base. Multiple WEPs may be arranged parallel to the wave crest to produce additional power.

Abstract: A tidal power generation system has a vertical post being embedded in a sea floor and a floating barge operably coupled to the post. The floating barge has a gear rotationally driven by the post as the floating barge moves vertically with respect to the vertical post. An offshore hydraulic pump is operably connected to the gear, an onshore hydraulic motor operably connected to the offshore hydraulic pump by a hydraulic circuit; and an electric generator is operably connected to the onshore hydraulic motor.

Abstract: In certain embodiments, an ocean wave energy extraction system including a wave energy panel may capture kinetic energy from an ocean wave as a force applied to a flexible membrane that drives the WEP back and forth in a reciprocating motion. The WEP dimensions may be selected so that the energy extracted from the wave is maximized and the added mass is minimized. A flexible membrane may be supported on two opposite edges by structural members that may pivot about a base. The shape of the flexible membrane may reciprocate in response to alternating horizontal wave orbital velocities. The force applied to the flexible membrane may be transmitted through the structural members to a power extraction device, such as a hydraulic pump or an electrical generator, that may be mounted to the base. Multiple WEPs may be arranged parallel to the wave crest to produce additional power.

Abstract: A method and system are disclosed which provides for power generation from oceanic wave motion which utilize: a double concave sided buoy flotation device, a recoil mechanism, an alternating-to-direct motion converter with gears having gravitational unidirectional collapsible teeth thereon and an underwater ramp to direct waves toward the buoy.

Abstract: This invention relates to a wave energy recovery apparatus with a power-take-off arrangement comprising at least a base, a reciprocating panel, two power-take-off (PTO) units with one or more generators to convert kinetic energy of waves or tidal currents to electricity, at least two gear transmissions operatively connected between the panel and the generators and at least two one-way clutch mechanisms to control the directions of rotation of the generators. The panel is arranged to rotate a half of the generators when rotating into one direction and another half of the generators when rotating into the opposite direction.

Abstract: A sea wave power generating apparatus comprises a frame, a platform secured on an upper portion of the frame, a floating panel pivotally secured to the frame and flapping upwardly or downwardly by the oscillation of the sea waves, a level controlling device slidably held on the platform for raising or lowering the floating panel to be normally submerged under a sea water level, and a power generating device mounted on the platform and having a rack pivotally secured to a rear portion of the floating panel and engaged with a pinion of the power generating device for converting the kinetic energy due to the upward or downward flapping movements of the floating panel into electrical energy.

Abstract: A wave power generator comprising a chain drive arrangement. The wave power generator comprising a float connected to one end of a retractable chain and a retractable device connected to an opposite end of the retractable chain.

Abstract: A gear arrangement for transforming a linear force and/or motion into a rotational torque and/or motion and vice versa. The arrangement comprises; a rack (10, 110, 210, 510, 1010, 2010, 3010, 4010) exhibiting a longitudinal axis (A) and at least one toothed side extending parallel to the longitudinal axis of the rack, the rack being reciprocally movable along its longitudinal axis. At least two pinions (20, 120, 220, 520, 1020, 2020, 3020, 4020, 5020) are arranged such that each pinion is rotationally meshing with a toothed side of the rack. Each pinion is fixed to a respective first primary gear (30, 130, 230, 530, 1030, 2030, 3030, 4030, 5030) arranged at a first axial side of the pinion. At least two first primary gears are mechanically connected to a common out- or input shaft (60, 160, 560, 1060), such that the at least two first primary gears transmit torque to or from the first out- or input shaft.

Abstract: The present invention relates to the utilization of wave energy and its conversion into operating motion of an electrical energy generating system. The system for generation of electrical energy through the conversion of aquatic wave motion includes floating bodies and a constant rotation mechanism, which converts the two-way linear motion of an inflexible transmission shaft or a flexible transmission shafts into one-way rotation of an output shaft of the constant rotation mechanism. This mechanism allows utilization of wave energy in two directions caused by the rise and fall of waves. The output shaft of the constant rotation mechanism is coupled to a force multiplier that is further coupled to a generator which generates electrical energy. Constant rotation mechanism can be driven by inflexible transmission shaft pivotally coupled to the floating bodies at one end, and the other end to an input gear of the constant rotation mechanism.

Abstract: A generator for converting tidal fluctuation to electrical energy is provided. The generator includes at least a first energy transfer mechanism. The first energy transfer mechanism includes a weight that is floatable in water. The first energy transfer mechanism further includes a first driver gear and a coupling rod connecting the weight to the first driver gear. The coupling rod rotates the first driver gear when the weight rises or lowers while floating on the water. Therefore, linear vertical motion of the tides is converted into rotational motion. A rotor is rotated by the first driver gear when the first driver gear is rotated by the coupling rod.

Abstract: A system and method for converting wave energy into electric energy in an intelligent, practical, and efficient manner. The system utilizes a power input shaft coupled with a vertically reciprocating buoy to rotate a crank gear and a ratchet gear meshing therewith. When the gears rotate, a plurality of generators coupled therewith produce electric energy. A flexible pivot device connects the power input shaft and the crank gear for absorbing impacts against the system from irregular and variable passing waves. The power input shaft is adjusted in response to water level fluctuations for maximum efficiency. A counterbalancing and maintenance device is coupled with the buoy to improve energy conversion efficiency and to uplift the buoy to a safe position in extreme conditions. An intelligent control system is included to monitor, control, and optimize the operations of the system.

Abstract: A wave power generator device having hypoid racks includes a buoyant tank, a roller mechanism, guide posts, a power generation platform, a hydraulic energy conversion mechanism and a cross lifting lever. The power generation platform is mounted on guide posts extended into the seabed. The cross lifting lever is provided in the throughhole in the middle of the platform. The lower part of the cross lifting lever is fixed with the buoyant tank by a movable connection rod. The roller mechanism is mounted at both sides of the buoyant tank and appressed to the guide posts. The hydraulic energy conversion mechanism includes a housing, one-way hydraulic cylinders, rolling wheels and is mounted on the power generation platform in cooperation with the cross lifting lever to achieve energy conversion motion to solve the control and adaption problem for a water level difference during the wave power generation.

Abstract: A device for converting wave-motion power having a float, which, in use, is vertically movable in response to the wave-motion; the motion being transmitted to an input shaft which rotates with reciprocating rotary motion and is connected to an output shaft by way of a transmission unit. The transmission unit transfers torque from the input shaft to the output shaft along two torque paths and has two freewheels that are arranged respectively along the two paths, and are configured so as to make the rotation of the output shaft unidirectional, independently of the rotation direction of the input shaft.

Abstract: The present invention relates to the utilization of wave energy and its conversion into operating motion of an electrical energy generating system. The system for generation of electrical energy through the conversion of aquatic wave motion includes floating bodies and a constant rotation mechanism, which converts the two-way linear motion of an inflexible transmission shaft or a flexible transmission shafts into one-way rotation of an output shaft of the constant rotation mechanism. This mechanism allows utilization of wave energy in two directions caused by the rise and fall of waves. The output shaft of the constant rotation mechanism is coupled to a force multiplier that is further coupled to a generator which generates electrical energy. Constant rotation mechanism can be driven by inflexible transmission shaft pivotally coupled to the floating bodies at one end, and the other end to an input gear of the constant rotation mechanism.

Abstract: The present invention is directed to a wave activated power generation system that converts the vertical movement of one or more power generation buoys resulting from interaction with waves into energy producing gyrations via a rack and pinion mechanism. The square-shaped power generation buoys are manufactured from fiber-reinforced plastic material.

Abstract: A wave energy converter (WEC) having an asymmetrically shaped float and a spar which move relative to each other in response to the waves. The asymmetrical float has one side longer than the other. A power take off device (PTO) is coupled between the asymmetric float and the spar for converting their relative motion into useful power. Apparatus is coupled to the WEC for: (a) orienting and rotating the longer side of the float to face and receive oncoming waves to increase energy capture when the waves have an amplitude below a predetermined value for improving the power generation of the WEC; and (b) rotating the float to orient the narrower side of the float to face and receive the incoming waves when the waves have an amplitude above a predetermined value, so as to reduce the forces to which the WEC is subjected. There is no known WEC system with an asymmetrical float which is raised and lowered by the waves.

Abstract: A dual powered take-off (PTO) device that efficiently extracts the kinetic energy stored in oceanic waves by converting the up and down movement of passing waves into a linear, bi-directional movement. The prime mover is a float which converts its movement in two ways: (1) by utilization of a direct drive, mechanical one-way rotary force with which to drive ancillary, sub-system devices such as electrical generators and/or pumps and, (2) by utilization of a reciprocating air flow that results as a by-product of the float's movement and, this air flow is exploited to spin one or more self-rectifying turbine(s) to drive electrical generators and/or pumps.

Abstract: In this invention, high-efficiency wind power generators are mounted on floats that are attached to bridge and other structures for generating electricity from hydrokinetic energy in water waves, currents and tides without submerging the wind power generators in the water. The use of bridge and other dual-use structures substantially reduces the capital cost necessary for installing this system to generate electricity in small as well as large amounts. Today, the systems for converting wind energy to electricity are far more advanced and efficient than existing systems for converting hydrokinetic energy. This invention could produce energy for water-transport vessels as well as for electric utilities.

Abstract: In a wave powered electric generator system, multiple floatation devices are interconnected by torque arms arranged to convert pivotal movement of the torque arms due to up and down movement of the floatation devices, into one-way rotational movement of electric generator shafts, the torque arms being configured to permit expansion and contraction of their lengths when exposed to sudden, severe axial forces.

Abstract: A changeable damping wave power capturing device driven by bidirectional screw rod is provided, which uses the ball screw device to capture the wave power and prevents the energy lost caused by complex mechanism. In addition, bidirectional reciprocating rectilinear motion is changed to unidirectional rotation by the ratchet wheel device, and then the rotating energy is imported to the generating set. Besides, the wave power capturing device driven by bidirectional screw rod uses the control device to detect wave energy and choose different generator, the control device could change the damping value and improve the efficiency that transforming wave energy.

Abstract: A device to capture and store or generate energy from variations in water level of a water body has a housing and an input shaft rotatably mounted to the housing. A drive belt is rotatably connected to the input shaft and a float is attached to that drive belt so that the float reciprocally drives the input shaft as the water levels increase and decrease. An output shaft is also rotatably mounted to the housing while a first one-way clutch is operatively disposed between the input shaft and the output shaft so that the input shaft rotatably drives the output shaft through the clutch in one rotational direction. A reversing gear is rotatably mounted to the housing and rotatably drives a second one-way clutch also operatively coupled to the second shaft to drive the second shaft in the same rotational direction as the first clutch, but during the opposite rotation of the input shaft.

Abstract: A reciprocating water displacement gravity engine is shown and described herein.

Abstract: A wave power buoy assembly for underwater installation having a tensile member with an operatively upper end and an operatively lower end, a buoy attached to the upper end of the tensile member and a friction coupling attached to the lower end of the tensile member for installing the tensile member to a driveshaft of an electrical generator, such that when installed on the driveshaft, the frictional coupler rotationally engages the shaft upon tensioning of the tensile member and disengages the driveshaft upon relief of tension of the tensile member.

Abstract: Provided is an energy storage system configured to accumulate energy for subsequent discharge. One embodiment includes an indirect energy storage assembly configured to accept energy input from a direct storage assembly. The indirect energy storage assembly includes a converter for lifting a mass, a speed reducer coupled to the converter for increasing torque provided, and a mass coupled to the speed reducer for generating potential energy when raised. In one embodiment, the direct energy storage assembly produces energy based on descent of a mass, the descent controlled by operation of a speed increaser coupled to a generator. In one example, the speed increaser provides an input:output ratio of at least 1:100. The speed increaser can be configured based on parameters of the generator (e.g., speed and torque). The mass of the direct energy storage assembly can include a float for lifting the mass responsive to water level.

Abstract: Three bodies interact to drive a transmission having a pair of one-way clutches coupling a single length of drive chain or other elongate flexible member to an intermeshed pair of counter rotatable gears so as to drive a primary shaft in a single rotational direction. The three bodies are a fixed body, a floating body, and a suspended and usually submerged weighted body. The three bodies are interconnected by the single length of the elongate flexible member and are spaced apart there along. The weighted body is mounted at one end of the elongate flexible member. The primary shaft is mounted above the surface of a moving fluid mass to either the fixed or floating body. The end of the flexible member opposite to the weight is mounted to the other of the fixed or floating body.

Abstract: A changeable damping wave power capturing device driven by bidirectional screw rod is provided, which uses the ball screw device to capture the wave power and prevents the energy lost caused by complex mechanism. In addition, bidirectional reciprocating rectilinear motion is changed to unidirectional rotation by the ratchet wheel device, and then the rotating energy is imported to the generating set. Besides, the wave power capturing device driven by bidirectional screw rod uses the control device to detect wave energy and choose different generator, the control device could change the damping value and improve the efficiency that transforming wave energy.

Abstract: A tide activated power system has a plurality of horizontally oriented cylinders that each have a pair of chambers. The cylinders are carried on float/weight barges that are located in a lagoon. A plurality of float/weight barges each have at least two cylinders in series. Each cylinder has a chamber holding a piston movable in the chamber defining a pair of variable size chambers: a flood variable size chamber and an ebb variable size chamber. As the float/weight barge rises and falls on the tide in the lagoon, the variable size chambers vary in size and force a working fluid to a turbine generator to create electrical energy. The piston of each of the multiple cylinders of the multiple barges forces combined to move the working fluid above the turbine generator where the flow drives the turbine generator prior to returning to the cylinder. In alternative embodiments, other mechanisms convert the energy from the rising and falling of the flow/weight barges to a non-uniform motion in one direction.

Abstract: A wave powered electrical generator includes: a floating unit that floats in water and accommodates a power generator therein. The floating unit has a wave power system that includes, a chamber containing fluid, a free-floating mass provided in the chamber that separates the chamber into first and second chambers defined at each side of the mass, a first valve that allows the fluid in the first chamber to be discharged from the first chamber as the free-floating mass moves toward the first chamber, and a second valve that allows the fluid in the second chamber to be discharged from the second chamber as the free-floating mass moves toward the second chamber. The fluid discharged through the first and second valves flows into a pipe that discharges the received fluid from an end thereof against a turbine attached to a power generator.

Abstract: A method and apparatus for harnessing power associated with ocean waves and converting that power into electricity. The apparatus is a buoy that houses a vertically oriented central shaft, a pendulum, and a generator. As the buoy tilts from the vertical under the influence of wave motion, the pendulum is accelerated and rotates about the central shaft. A centrally-placed generator is mechanically coupled to, and driven by, the rotating pendulum so that the pendulum's kinetic energy is converted into electricity. The electricity may be stored at or near the buoy or transferred to a remote facility. Moreover, a fin array located along the bottom of the buoy serves as an anti-torque mechanism and improves the operational efficiency of the electricity production. The method involves employing use of the centrally located generator and the fin array to efficiently harness wave power.

Abstract: An energy converter apparatus connected via a rope between a buoyant marine vessel body and to a stationary or semi stationary surface with respect to the motions of the marine vessel to convert differential motions of the vessel compared to the stationary body to useful electrical energy; a rack and pinion gear box device causing the linear motions of the buoyant vessel to an axial rotational motions, the rotation in only one direction; a ratchet wheel connected to a shaft and an electric generator.

Abstract: In accordance with the present invention, a portable wave-swash & coastal-wind energy harvester, once placed on a sea coast in the swash zone captures the mechanical energy contained in: (a) waves in the swash-zone, and (b) coastal-wind. Energy is extracted through: (a) wave turbines, (b) wind turbines, and (c) wave floats. A rotational transmission system with one-way clutches transmits torque to an alternator, while flywheels attached to the axles maintain steady rotation of axles. A wave funnel faces the waves and causes the wave uprush to converge toward wave turbines. A buoyancy chamber at the bottom produces reduction of weight of the portable wave-swash & coastal-wind energy harvester when water in the chamber is emptied and thereby enhances maneuverability of the unit on land and in water, while a stabilization tank at the top when filled with water provides extra weight and stability of the unit in its operating location.

Abstract: An electricity generating or other power distributing device that utilizes the energy stored in ocean waves as they approach the shoreline. A series of buoys, which are thus struck by said waves are thrust upward and outward, operating hydraulic pumps. Fluid is pumped into a rotator that lifts a plurality of weights contained in deep silos within the earth. The cable devices connected to these weights are threaded around, and thus rotate a series of clutches, transmissions and flywheels, which provide a constant rotational output. This output can be attached to an A/C generator, or any other device requiring a constant force and rotation to operate properly.

Abstract: A wave powered electrical generator includes: a first floating unit that accommodates a power generator therein and adapted to float in water, a second floating unit adapted to float in the water in the vicinity of the first floating unit; and a spring line, one end of which being attached to the second floating unit and the other end of which being operatively connected to the power generator, such that a relative movement between the first floating unit and the second floating unit causes the spring line to rotate a shaft of the generator and generates electrical power.

Abstract: Systems and methods are disclosed for harnessing wave energy. In one embodiment, a wave energy conversion device comprises a buoyant component connected to a generator such that wave energy is transferable from the buoyant component to the generator. A restricting mechanism connected with the buoyant component, is configured to selectively restrict the buoyant component from rising strictly along with passing waves. The restricting mechanism may be selectively released at an optimal time during a passing wave. In some embodiments, a system may include an array of wave energy conversion devices and a communications network. The communications network may allow for each of the buoyant components in the array to be released at an optimal time in sequential fashion.

Abstract: Power generating apparatus includes a float mounted on a support pivotally mounted to a base and secured to a beam extending rearwardly of the base to a vertically extending elongated structure carrying a pair of vertically movable gear racks in guideways. Each rack is engaged by a gear wheel driven by movement of the racks and a one-way drive arrangement connects each gear wheel to an output shaft. Driving weights are secured to each rack to drive the racks in opposite directions under the action of gravity forces acting on the weights, thus causing the output shaft to rotate in a given direction. The free end of the beam is connected to a cross-arm vertically moveable on a guide on the elongate structure, the cross-arm having a motion transmitting arrangement to raise each weight during vertical movement of the cross-arm resulting from movement of the float.

Abstract: A device for a wave-power plant includes a self-tightening winch with a winch wire. The winch wire is connected to a wave-power-operated absorption element at one end and to a cable drum of the self-tightening winch at the other end. The cable drum is connected via a transmission system to an outgoing axle which is further connected to an energy-storing restructuring machinery. Movement of the absorption element results in rotation of the cable drum and transmission of mechanical energy from the cable drum to the rotating outgoing axle and to the restructuring machinery. The transmission system includes a slip clutch connected to the outgoing axle, which protects the components in the wave-power plant, particularly the components in the restructuring machinery, against overload in the event of large wave amplitude.

Abstract: This invention relates to a wave power generating device, comprising a lifting pillar installed on a floating platform, a sleeve covered outside said lifting pillar and two groups of ratchet wheel mechanisms installed on said sleeve; wherein the inner wheel of each of said ratchet wheel mechanisms rotates with the sleeve, the outer wheel of each of said ratchet wheel mechanisms drives a corresponding power generator to generate power; and the first outer wheel in the first group of ratchet wheel mechanism rotates with a first inner wheel along the first direction when the lifting pillar is rising, while the second outer wheel in the second group of ratchet wheel mechanism rotates with the second inner wheel along the second direction when the lifting pillar is falling. The wave power generating device of the invention has advantages of simple structure, low loss, and high power efficiency, and may transport much power energy for various uses.

Abstract: An apparatus for wave energy harnessing includes at least one slide shaft, a buoyant unit, an energy-transmitting unit, and a rotate unit. The slide shaft is firmly mounted on the seabed. The buoyant unit is movably engaged with the slide shaft and has a reservoir and an adjusting board, so as to control the vertical position of the buoyant unit relative to sea level. The energy-transmitting unit is mounted on the buoyant unit. The rotate unit rotatably engages with the energy-transmitting unit and connects with an energy-transfonning unit through a transmission shaft. Thereby, the buoyant unit is driven by waves to vertically slide along the slide shaft, the energy-transmitting unit rotates the transmission shaft of the rotate unit, and, thus, the energy-transforming unit generates power.

Abstract: Disclosed is a wave powered electric generating device for generating electric power from wave-driven water body in a fast, easy, inexpensive, and efficient manner such that the set up has less configurational complexity, involves easy installation and maintainability. The wave powered electric generating device comprises: a plurality of buoyant members capable of floating in a wave-driven water body, wherein one of the buoyant members comprises at least one electric generator, and a transmission system; and interconnecting mechanism for connecting the buoyant members, wherein the transmission system is configured to convert a wave motion of the wave-driven water body to a rotary motion, the transmission system is capable of transmitting the rotary motion to the electric generator for producing electric power.

Abstract: Includes at least one floating body (1), and is characterised in that includes a device (2) fitted inside said body (1) for transforming the movement of the floating body (1) into pneumatic or hydraulic energy and means for transmitting the energy to dry land or to a fixed structure. An energy-generation system is obtained thereby with a manufacturing time and cost lower than the systems currently known. Moreover, the fact that the transforming device (2) is fitted inside the floating body (1) means that it is protected against corrosion caused by the water, against sharp movements caused by marine currents and against other possible outside agents which might harm or damage any of the components which make up the device.

Abstract: The rack is connected to a frame which is secured to the bottom of an ocean or lake with high waves which move up and down with high frequency. Pawls enable the up and down motion of the buoyant rack to turn the driving shaft of a pump. This invention combines the rack and pinion concept with the pawl and ratchet concept, thereby converting the up-and-down motion of the reciprocating rack into the rotation of the shaft which drives the pump. Water is pumped up, by the pumps, to generate hydroelectric power.

Abstract: An installation to apply ocean energy to power generation. The installation includes a floater, lever, chain, ratchet wheel, flywheel, generator, cable, etc. The floater and weight fixed to the floater move up and down with the motion of wave and drive the strength enlargement mechanism made up of a number of levers to travel alternately and pull the heavy flywheel to rotate constantly. The rotation of the flywheel enables the generator to run and yield electricity. The installation has simple structure and high efficiency and can easily increase or decrease the enlargement mechanism according to the capacity of generation. This installation with low cost can be widely utilized for pollution-free power generation in the coast.

Abstract: A pair of articulated rods connect between a float and a pair of shafts through a one-way clutch on the respectively shafts. When a float rises an “up” connecting rod causes the “up” shaft to rotate as its clutch is engaged, and when the float falls, that clutch disengages, allowing that shaft to freewheel. Likewise when the float falls a “down” connecting rod causes the “down” clutch to engage and the “down” shaft to rotate, typically rotating opposite the rotation of the “up” shaft. When the float reverses and begins to rise again, the “down” clutch disengages and the “up” clutch reengages. A connecting rod hand member connected pivotably to the forearm at a wrist joint is adjustable in length. The wrist joint adjusts the effective length of the hand member to change the stroke of the machine to match wave amplitude through a computer-controlled pneumatic actuator.

Abstract: The rack is connected to a frame which is secured to the bottom of an ocean or lake with high waves which move up and down with high frequency. Pawls enable the up and down motion of the buoyant rack to turn the driving shaft of a pump. This invention combines the rack and pinion concept with the pawl and ratchet concept, thereby converting the up-and-down motion of the reciprocating rack into the rotation of the shaft which drives the pump. Wster is pumped up, by the pumps, to generate hydroelectric power.

Abstract: A device for extracting energy from a water body (4) comprises a buoyant member of variable buoyancy (6) which is at least partially submerged in the body of water (4). The buoyant member of variable buoyancy (6) contains a fixed mass of gas (7), the volume of which changes as a result of the pressure changes exerted on the buoyant member (6) by waves (10,11) and/or other changes in the water level above. The buoyant member (6) is preferably constructed from a substantially air-tight, flexible or otherwise elastic material, whereby the volume of the buoyant member of variable buoyancy (6) may alter in response to changes in the volume of gas (7) contained therein. The pressure changes result in volume changes of the gas contained within the variably buoyancy, which causes fluctuations in volume of the variable buoyancy. As a result of changes in volume a change in buoyancy occurs.

Abstract: A power generation apparatus utilizing energy produced from ocean level fluctuation includes a working platform having a plurality of guy rods provided around its circumference each attached with a buoy under the working platform in the water; and a damper installed on top of each guy rod above the working platform; a connecting rod extended to the inner part of a generator unit installed coaxially on the working platform is connected to the center of a ratchet wheel clamped in each clamper. With such a structure, when the buoys move up and down following ocean level fluctuation, the dampers on top of the guy rods drive the ratchet wheels to rotate and the rotating torque of the ratchet wheels is transmitted to the generator unit thereby being converted to electric power.

Abstract: An apparatus and method are provided for generating energy from a source of pressurized fluid by harnessing buoyancy and/or gravitational forces. The apparatus includes at least one container having an inlet port on a top side for receiving the pressurized fluid while the container is at the top of a tank or stand and an a drainage port on a bottom side for draining the pressurized fluid while the container is at the bottom of the tank or stand; a chain belt attached to the container such that the chain belt rotates as the container travels; and a shaft connected to the chain belt for producing rotational energy.