Abstract: Described is a drive assembly (20) and a production assembly (22) for use in producing reciprocating motion. In one embodiment, the drive assembly is formed as a flexible hose hydraulic cylinder that uses a source of fluid pressure to extend and retract a flexible hose. One or more valves are available to regulate the pressure within the flexible hose. A reciprocating member is connected to the flexible hose. Extension and retraction of the hose cause corresponding translation in the reciprocating member. In one embodiment, the reciprocating member is a piston rod that is biased in one direction.

Abstract: A known type of surface wave energy converter comprises a submerged elongated tube supported by, but being vertically movable relative to, an anchored float. The tube vertically reciprocates in response to overpassing surface waves and drives a transducer for generating useful energy. Improvements include: a motion translator between the tube and the transducer for reducing the stroke length of the transducer and magnifying the force transmitted to the transducer; an energy buffer system for limiting the travel of the tube in response to excessively large surface waves; a gravity anchor for the system for absorbing energy from even greater amplitude waves; means for adjusting buoyancy in response to changing conditions, and pressure relief valves for automatically reducing excessive tube driving pressures caused by excessively large overpassing waves. Energy present in tilting movements of the apparatus are optionally captured in horizontally disposed transducers.

Abstract: A system and method generating electricity includes converting wave motion into mechanical power. A fluid matter is driven as a function of the mechanical power to a reservoir. The fluid matter is flowed from the reservoir. At least a portion of a kinetic energy of the flowing fluid matter is converted into electrical energy. The fluid matter may be liquid or gas.

Abstract: An energy conversion system using the static head pressure of large bodies of water to compress a gas. A Pascal hydraulic link between a small piston and a large piston multiplies the force of the large piston compressing the gas. Heat transfer is established between the gas compressed by the large piston and a fluid used to drive a turbine. After time, the static head pressure on the small piston is relieved allowing the compressed gas to expand ending a cycle. Electrical energy is produced by a generator driven by the turbine using thermal energy generated by repeated compressions of the gas.

Abstract: A power generating machine having a frame provided with a first support, a second support and a third support laterally and adjustably mounted between the first and second supports. A bellows is mounted under the third support and between the first and second supports. The bellows has a buoy mounted at a bottom of the bellows to adapt to be flush with sea level so that sea waves are able to drive the bellows to move up and down reciprocally. A first tube is mounted to communicate with the first tube and so as to allow air to be sucked in the first tube when the bellows extend. A second tube is communicated with the first tube so as to allow air flowing only to a tank connected to and communicating with the second tube to drive a pneumatic generator to generate electricity.

Abstract: An air compressor system utilized in a body of water that produces compressed air from water wave energy. The air compressor system includes floating structures in a body of water designed to receive ambient air and produce compressed air, utilizing a bellow assembly. The air compressor system converts water wave energy into storable and consumable energies, such as compressed air in a storage tank. The instant invention primarily comprises a low-wave air compressor, high-wave air compressor, and a stabilizing system.

Abstract: A rigid cylinder structure is vertically positioned at sea bottom,so that the top of the cylinder's surface is at a depth of 300 meters below sea surface. This surface constitutes the upper face of a piston which moves within the cylinder,when it is exposed periodically by way of a shiftable opening & closing valve,which is located at the top of the cylinder,it intervenes,then exposes the piston at regular intervals to sea water pressure of 30 atm. Being basically a Pascal Hydrolic system,this pressure is transmitted through a pipe to a larger area piston,but in addition to the Pascal system, the multiplied pressure is in turn is used to pressurize a gas above it & compresses it to {fraction (1/9)} of it's initial volume. The result of compression is a 14 fold temperature increase-adiabatic. The high pressure & high temnperature as is then contained in a closed cycle second upper volume,which has just the exact dimensions for the gas which is compressed to {fraction (1/9)} of its initial volume.

Abstract: A system for conversion of hydrostatic pressure variations of sea waves into useful energy is disclosed. The system is comprised of a sealed casing (12) with a membrane-like cover (16). The cover operates piston (52) under the pressure of the waves. The piston compresses air into vessel (22), from which it is discharged (86) to drive turbine (24) and produce electric energy (26). The piston (52) is recoiled back upwards by second piston (56), reciprocable within cylinder 58. The effective volume of the cylinder 58 is variable for counter-pressure adjustment purposes.

Abstract: A pump (10) comprises a pair of bladders (28,30) attached to respective opposite sides of a flexure plate (32) for pumping fluid by alternately compressing and expanding the bladders. Each bladder has at least one input connector (22, 34) with a one-way valve (38) therein and at least one output connector (24, 36) with a one-way valve (40) therein, in order to provide one-way flow of fluid through each of the bladders. The pump (10) is positioned to be acted upon by a moving liquid, such as natural wave action of a body of water, for example, by being connected to floating objects on the surface. The moving liquid causes the flexure plate (32) to bend in an undulate manner, first in one direction and then in the other. This bending action causes fluid to be alternately drawn into and expelled from the bladders as the bladders are alternately expanded and compressed.

Abstract: An apparatus and method for converting renewable wave action energy to electrical energy that harnesses fluid wave power by employing a plurality of low-mass buoys floating on a fluid surface connected to low-volume pumps. The pumps transfer fluid from a source to an elevated storage tank. There, the water can be held in the tank as a reserve, when not being immediately used to generate electrical power. When there is a demand for electrical power, the reserve is released from the storage tank and flows, by gravity, through a hydro-electric generator creating an electrical current.

Abstract: A hydraulic device powered by a wave includes one or more posts secured on a sea floor, a float buoyant on the wave, a housing secured to the posts and having a slidable piston for separating the interior of the housing into two chambers. Four pipes are coupled to the chambers of the housing with four check valves, for allowing the fluid to be drawn into the chambers from two of the pipes and to be forced out of the chambers into the other pipes step by step in order to generate a hydraulic power or energy and for powering or actuating the other facilities.

Abstract: A fluid ladder or a fluid lifter and a method for lifting a liquid or a flowable or fluid-like material such as grains, sand, soil, and the like from one level to a higher level preferably through oscillation. The fluid ladder is capable of lifting fluids without the use of conventionally known pump devices and without the need for energy sources such as electrical energy, combustion energy and the like. The apparatus may be operable using energy sources such as that provided by muscles e.g., the muscle use of a human being or animal or the energy provided by oscillatory wave motion of a body of fluid. The fluid ladder lifts fluid through a series of, or a plurality of, reservoirs.

Abstract: A lunar tide powered hydroelectric plant of variable size and power generation capacity for basing on land or in tide waters. The basic collection of mechanical power is done by torsion spring bank units positioned on a concrete barge. The land-based plant obtains oscillatory motion from a notched frame. The tide water based plant obtains oscillating motion from notched piling. An individual torsion spring bank unit can comprise columns of horizontally aligned torsion springs based on a row of torsion springs of a bottom control cell. The tidal and wave motion is transferred to the torsion spring banks. A computer system manages the release of each torsion spring column to a drive shaft of a generator to produce electrical power. The computer system also permits the conversion of kinetic energy by reversing the gearing system for the upward motion of the floating barge so as to obtain a constant input of kinetic energy to the generator.

Abstract: An installation for extracting energy from a liquid in which swell occurs relative to a bottom. The installation includes a first and second container for placing at a determined horizontal first mutual distance at least partially under the surface of the liquid, each provided with a closed upper side directed toward the liquid surface, closed side walls and an open underside directed toward the bottom for enclosing a gas under the liquid surface. The gas is bounded to the underside of the container by a quantity of liquid entering via this underside, which quantity of liquid varies as a result of the swell. A transport conduit is provided for transporting gas from the first to the second container and vice versa. A generator responding to the variation in the quantity of liquid in at least one of the containers for generating energy from this variation is also provided.

Abstract: A fluid pressurizing unit for generating high pressure fluid by utilizing the water weight changes caused by the presence of a wave crest or wave trough directly above the apparatus. The apparatus is positioned under the surface of a body of water having waves and has a plunger having a flat disk at its upper end. The plunger moves vertically with respect to a rigidly mounted cylinder, which defines a fluid chamber having a cross sectional area less than the surface area of the flat disk. A conduit, in fluid communication with the fluid chamber, conducts water from the body of water, or fluid from an inlet tank, to the fluid chamber and pressurized fluid to a collection tank. Inlet and outlet check valves insure that fluid does not flow from the collection tank to the fluid chamber, or from the fluid chamber to the water source or inlet tank. Preferably, a plurality of such units are arranged hydraulically in parallel with one another.

Abstract: An electric power generator apparatus that generates electrical power from the tidal movements of a body of water by employing multiple energy producing systems. Those energy producing systems include: (1) a moveable tank system associated with hydraulic cylinders in which the upward and downward movements of the tank relative to the tide are used to generate electrical power; (2) an enclosure system in which the controlled inflow and outflow of water between the enclosure and the surrounding body of water is used to generate electrical power; (3) a bellows system in which the effects of the tidal movements are used to force water from the bellows tank through a generator thereby producing electrical power; and (4) a buoyant mass-actuated piston system in which the movement of floating objects (such as docked ships) relative to the tide is used to generate electrical power.

Abstract: A water pressurizing unit for generating high pressure water by utilizing the water weight changes caused by the presence of a wave crest or wave trough directly above the apparatus. The apparatus is positioned under the surface of a body of water having waves and has a plunger having a flat disk at its upper end. The plunger moves vertically with respect to a rigidly mounted cylinder, which defines a fluid chamber having a cross sectional area less than the surface area of the flat disk. A conduit, in fluid communication with the fluid chamber, conducts water from the body of water to the fluid chamber and pressurized water to a collection tank. Inlet and outlet check valves insure that fluid does not flow from the collection tank to the fluid chamber, or from the fluid chamber to the water source. Preferably, a plurality of such units are arranged hydraulically in parallel with one another. In this embodiment, a single collection tank collects pressurized fluid from the individual units.

Abstract: A pump actuated by a reciprocal oscillating motion, the pump including a casing member enclosing an elongated substantially cylindrical chamber therewithin, a pair of flexible bellows disposed at the opposing distal ends of the chamber, each of the bellows, in a normal unflexed state, extending inward into the chamber, and each of the bellows enclosing a pumping chamber, each of the pumping-chambers having a one way intake port and a one way output port, a piston positioned within the chamber for reciprocation therewithin under the influence of gravity in response to the reciprocal oscillating motion, the piston including a substantially spheroid member, the piston having a reciprocal stroke such that, at the extremes of the reciprocal stroke, the piston alternately compresses each of the flexible bellows, thereby alternately decreasing the volume of each of the pumping, and a cap member disposed at each of the distal ends of the casing member, each of the cap members abutting one of the flexible bellows to t

Abstract: An apparatus for extracting ocean wave power includes slidable horizontal support means. A turbine unit is mounted on the slidable horizontal support means and is rotatably engaged with water flow. An extendable ram is coupled to the turbine unit at one end for lifting and lowering the turbine unit. The other end of the extendable ram is coupled to the slidable horizontal support means so that the turbine unit can incline and extend forwardly and backwardly concurrently with the lifting and lowering. Power generating mechanism is disposed at a fixed distance from the turbine unit for receiving the rotational movement of the turbine unit via a transmission mechanism.

Abstract: Arrangement for feeding water into a reservoir located at a level above that of the ocean by utilising energy produced by the movement of waves thereof. An air cushion-forming portion of a first chamber communicates with an air cushion-forming portion of a second chamber. Water is supplied to the second chamber via an intake pipe and associated back pressure valves plus adjacent rising pipe. As a result of equivalent pressure variations in the first and second air cushion-forming portions caused by movement of the waves, water is lifted from the second chamber in a pipe via additional back pressure valves along with a further rising pipe plus pump to a higher lying, third chamber and from there to the reservoir.

Abstract: A tidal power generation apparatus includes a first group of containers fixed in plural piles in a natural sea having a tidal difference in sea level height, which containers are spaced in parallel to one another at fixed intervals, each container of which is opened at a lower side thereof and is capable of holding air therein, a second group of containers fixed in plural piles in tideless water within an artificial dam, which second group of containers are spaced parallel to one another at fixed intervals, each container of which is opened at a lower side thereof and is capable of holding air therein, and air pipes providing communication between respective containers of the first group in the natural sea and respective containers of the second group within the artificial dam. With the apparatus, the energy in a tide is collected in the form of energy in compressed air created by water pressure at high tide.

Abstract: The prime-mover comprises a central inertial barge 1, a first outer wave-engaging pontoon 2 pivotally movable relative to the central barge 1 about the pivotal axis defined by the arrow A, and a second outer wave-engaging pontoon 3 pivotally movable relative to the central barge 1 about the axis defined by the arrow B. Two series of pumps 4 are mounted on the central barge 1 and driven by the pivotal movement of the outer wave-engaging pontoons 2, 3 respectively. A damping mechanism comprising two shafts 6a, 6b extend downwardly from the bage 1. The shafts 6a, 6b are provided with damping plates 7a, 7b at the bottom ends thereof. The damping plates 7a, 7b may be moved relative to the shafts 6a, 6b by being screwed up or down the shafts as required.

Abstract: The invention relates to a method and device for generating electric power by use of wave force.According to the invention, it is possiblke to obtain the required power using the floatation bladders rising and falling repeatedly with waves as a power using the floatation bladders rising and falling repeatedly with waves as a power source and the rotation force of gears connected to the floatation bladders through ropes. The invention has advantages in that the construction of the power generating means and its supporting means are simple, execution of work is easy, a kinetic energy is convertable into an electric energy using the floatation bladders regardless of the magnitude of waves, and even in the deep sea, the base frame is not installed on the sea bed, but in a fixed depth under the mean sea level, and thereby the maintenance and repair of device is carried out without any difficulty.

Abstract: What has been invented is a machine constructed according to the apparatus illustrated by FIG. 6 in Sheet 5/9, set out floating on the ocean to convert the energy of the water waves into storable and consumable energies, such as, compressed air, etc, comprising:(a) A Multi-Stage Piston Compressor, as per FIG. 1 and FIG. 2, which is a composition of several cylinders joint end after end, decreasing in diameter by end after end, having a piston with one-way valves in each cylinder, having one-way valves on every partition wall between cylinders, a single long piston rod common to all cylinders that moves each of the pistons synchronically to push the compressed air towards its smaller end;(b) A Power Board System as per FIG.

Abstract: An apparatus for removing water out of a boat which comprises: a swingable member which is swingable according to a rolling and/or pitching motion of the boat; and water discharging pump device which is operated by the swinging motion of the swingable member caused by rocking motion of the boat such as rolling and/or pitching motion of the boat.

Abstract: A wave power generating system for generating electricity using natural wave power, includes wave energy converters for converting wave energy into air pressure, a constant air pressure tank for storing the air pressure from the wave energy converters to equalize the fluctuation of the air pressure, an air turbine stationarily driven by the equalized air pressure, and an electric generator for generating stable electricity using the rotating power of the air turbine. The wave energy converters are settled to the bottom of the sea and are sufficiently tall to function as wave dissipation facilities. The air pressure in the constant air pressure tank is automatically controlled toward a target value by a controller and the target value is calculated by the controller in accordance with measured values of wave amplitude and period and the current air pressure of the constant air pressure tank.

Abstract: A hydraulic single piston pump for manual operation has a piston (3) with a first channel (14, 20) running from piston chamber (7) to the rod chamber (5). The first channel has a check valve (15-19) opening in the return stroke. The piston (3) also has at least one second channel (22, 23, 25) running from the piston chamber (7) to the rod chamber (5). The second channel is configured as a choke bore (23, 25) along at least a part of its length.

Abstract: An apparatus and method of obtaining useful energy from wave action in a body of water. The apparatus comprises a cylinder, a reciprocal piston in the cylinder, a piston rod connected to the piston and extending sealably out of the cylinder, a mechanical tensioning device connected between the piston and the cylinder for maintaining resilient tension between the piston and the cylinder, a float connected to one of the piston rod or the cylinder, an anchor flexibly connected to the other of the piston rod or the cylinder which is not connected to the float, an inlet check valve and an outlet check valve connected to the cylinder, and a conduit extending from the outlet check to an area where water may be usefully employed. The mechanical tensioning device may be a spring or a weight and tether. The apparatus and method may be used to operate a hydroelectric generator.

Abstract: An apparatus and method for using same for extracting energy from waves, including near-shore waves by imparting momentum to an energy roller or energy car. The energy roller or car is moved along a flexible floating belt by the action of waves on the shape of the flexible floating belt. The invention also provides for a hydrodynamically shaped float to be driven along a rigid floating structure by the action of a wave at the rear of the float.

Abstract: It is an unlimited and continuous pneumatic generating system to be driven with the sea-wave force (the power to be generated may optionally be designed). This system can effectively absorb the motive force of sea-waves from almost any direction, and can convert that force into a mechanical force, which is further converted into a pneumatic force. The pneumatic force is transmitted to the shore, being divided into two portions, of which one portion (A) is used for generating electric power, while the other portion (B) is to be stored up as a spare energy, which may be used upon having no sea-wave force to be absorbed from the sea for directly generating power.

Abstract: A sea wave impacted power generating device, comprising essentially a fix support, a movable bearer, a blade type water wheel, two pressure cylinders, a storage cylinder, two braking means and several floating bodies. Bottom of said movable bearer has several floating bodies mounted thereon and floated on then face. Square horn port and water channel thereof are used to introduce impact impulsion force of sea wave to push a blade type water wheel and further to rotate an eccentrically mounted connecting rod. Connecting rod is used to cause displacement of piston of the pressure cylinder to generate high pressure air to be stored in a pressure cylinder and used for power or electricity generating device activated by high pressure air.

Abstract: A wave-powered, two-stage compressed air apparatus (10) comprising a low compression valving arrangement, and a high compression chamber (16), wherein volunteer air is used in the low compression mode to pre-charge the high compression chamber (16) and then kinetic wave energy is subsequently transmitted to a compression piston (21) via the wave (11) impacting a ram disc plate (17).

Abstract: Float/weights are positioned in the tidal water, arranged to rise and fall with the tides. A power unit including a cylinder and piston is arranged with the piston connected with the float/weights, and draws water into it upon the float/weights rising and forcing it into a storage unit upon the float/weights dropping. The storage unit includes a cylinder and a weighted piston. After the storage unit is filled, the water is let out to drive a water turbine and generator. The apparatus may use a closed circuit for the water, or an open circuit and draw it directly from the sea and return it to the sea. In the use of a closed circuit, instead of sea water, the apparatus may use fresh water, or oil. The apparatus is also adapted to use compressed gas instead of liquid.

Abstract: According to the present invention, a simple, strong and economical resonant type apparatus for absorbing wave energy which can generate electric power at high efficiency, yet can withstand extraordinary sea phenomenon such as typhoon with minimum investment and maintainance costs.

Abstract: Apparatus and process for use in converting the energy of ocean waves to useful power form wherein two floats supporting a rigid structure are spaced apart to maximize the end movement of said rigid structure, and an energy extraction device preferably of the cylinder and piston type is operated by the movement of the end of said structure producing movements of four times the wave height when the two floats are spaced one-half the wave length of the wave and the energy conversion device is spaced further away from said floats by a similar amount.

Abstract: A power generating apparatus utilizing wave motion which includes a float pivotally connected to the underside of a stationary platform by an elongated arm, the arm connected intermediate its end with the piston rod of a cylinder-piston assembly on the upper side of the platform. The cylinder-piston assembly is provided with oppositely disposed air inlets and compressed air outlets having check valves with the outlets connected to a storage reservoir so that each stroke of the piston resulting from the wave motion imparted to the float draws in ambient air and discharges compressed air to the reservoir.

Abstract: A rotating cellular energy generating device for generating electrical power for extended periods of time. The generating device characterized by having an annular rotating housing having a plurality of individual compartments therein. The compartments receiving material which is compartmentalized to accurately control the mass distribution in the rotating housing for maintaining speed as power is withdrawn or generated during the rotation of the housing.

Abstract: At least one caisson which is part or all of a breakwater forms a water chamber therein whose closure is a pendulum having a natural period in rocking or oscillating the same as a period of stationary wave surges caused in the water chamber by rocking movement of the pendulum owing to wave force impinging against the pendulum. At least one double-acting piston and cylinder assembly is connected to the pendulum, so that when a piston of the assembly is reciprocatively moved by the pendulum, pressure difference between cylinder chambers on both sides of the piston of the assembly controls a change-over valve which in turn controls hydraulic pressure discharged from the cylinder chambers to be supplied to a plurality of hydraulic motors respectively having accumulators of a type wherein accumulated pressure and volume of the hydraulic liquid are proportional to each other, whereby driving a common generator alternately by the hydraulic motors.

Abstract: A wave responsive generator comprises a buoyant float having an outer fixed shaft downwardly depending from the float with an inner rotatable drive shaft movably mounted within the outer shaft. At the lower most portion of the shaft opposite the float is a turbine affixed to the inner drive shaft opposite the float. A plurality of reversible vanes are movably mounted on the turbine for transmitting rotational energy to the inner drive shaft responsive to either upward or downward motion of the shaft responsive to wave action on the float. An electric generator or alternator is mounted on the float and cooperates with the inner rotatable shaft to produce an electric current responsive to the rotation of the inner shaft.

Abstract: A wave energy conversion system is disclosed and comprises a spine and a plurality of wave driven pump units each comprising a pillow shaped flexible bag arranged with its length direction horizontal and mounted on the spine so that the water in which the system is located flows to both sides of the bag so that in use the bag is kept out of abrading contact with the spine. The lower edges of the bags are attached to the spine and the upper edge of each bag has a common outlet/inlet passage through which air is pumped back and forth by the bag collapsing and expanding under the influence of the waves. The common passage is at one top corner of the bag and at the other top corner is a dummy passage which enables the bag to be fabricated in such a manner that the corners are not stressed significantly in use. Also, a common pipe can be used to define the common passage of one bag and the dummy passage of the adjacent bag.

Abstract: A wave-power generator assembly including a pair of one-way turbines symmetrically mounted on a common rotating shaft is provided. Because of the symmetrical arrangement of the one-way turbines, the rotating shaft and, therefore, bearings to rotatably support the rotating shaft are prevented from receiving excessive thrust forces. Thus, the present generator assembly may be presented to service for an extended period of time without requiring replacement of parts.

Abstract: A resonant type apparatus for absorbing wave energy arranged at wave-breaking facilities, which comprises, a caisson having a bottom plate, side plates, a backside plate and a top plate at least a part of which is omitted. A water chamber in the caisson has a length in a directional parallel to the side walls which is larger than 1/4 of the wave length Lc of a stationary wave within the water chamber, and a node of the stationary wave in the water chamber is formed at a distance Lc/4 from the backside plate. A pendulum is arranged at the position of the node of the stationary wave for swinging with a natural period Tp which is substantially the same value as the natural period Tw of the stationary wave, whereby the pendulum is swung by the stationary wave to absorb and convert wave energy to useful available energy at high efficiency.

Abstract: The invention involves a device for utilizing the energy from sea swells and waves. The device is characterized by the combination of:(a) a vessel adapted to follow the regular undulations of sea swells at a place of anchorage, and constructed in a manner to face the swells so as to pitch and not to roll while anchored;(b) air cylinders disposed at least at one extremity of the vessel to moderate more or less the amplitude of the pitching;(c) watertight compartments containing a liquid;(d) prime movers, such as continuously powered turbines, located in the path of the liquid and suited to harness energy from the liquid as it moves so as to supply mechanical energy to at least one rotatable shaft; and(e) liquid deflectors located at the extremities of each water-tight compartment.

Abstract: Hydrostatic pressure of a passing wave crest causes collapse of flexible bags pumping air from the bags via a non-return valve into a high pressure air conduit 14a, 14b. The bags are re-inflated in the wave trough from a low pressure air conduit 13. One or more turbines 19, 21 are driven by air flow from the high to the low pressure air conduits. By controlling the restriction to air flow passing through the turbine(s) power extraction is optimized. By providing separately adjustable air flow circuits for the bow end and the stern end, differential control of the flow restriction in the two circuits provides control over pitching of the device.

Abstract: In a stationary wave-motion-driven power generator station, a rotatable cylindrical steel structural body is mounted, with its axis substantially horizontal. The ends of the axle of the body are located in bearings which can move up and down to immerse the lower portion of the body in the sea. Vanes are provided on the body to cause the latter to be rotated by wave motion and are in the form of annular prominences around the body having outwardly-decreasing approximately triangular cross-sections.

Abstract: A device for converting the energy of sea and ocean waves, including a turbogenerator connected by means of pipelines to input and output elements on which there are mounted ballast systems and stabilizers. The input and output elements are designed as a high pressure vessel and a low pressure vessel, respectively, each having a gas cushion. A high pressure compressor unit and a low pressure compressor unit are, respectively, mounted on these vessels and are connected to high pressure and low pressure gas tanks, respectively, and to the respective gas cushions. The converter is connected at at least two different points to the sea bottom by means of at least two flexible cords the length of at least one of which may be altered.

Abstract: A wave energy power station comprises two water-filled chambers in communication at the bottom, wherein a first chamber is in communication with the sea at the upper end thereof and the second chamber is defined by one or more walls which project above the surface of the sea, such that pressure variations in the sea owing to the waves will set the water in an oscillating movement between the two chambers, and energy being tapped from the oscillating system, for example, by allowing the water in the chamber which is not in communication with the sea to overflow periodically into a reservoir, from which it is led back to the sea through a turbine, or by utilizing the water column in the second chamber for drawing in and compressing air which drives an air turbine.

Abstract: Apparatus for generating electricity including a chamber with a top opening, anchoring mechanism for positioning the chamber in a body of water with wave movement, mechanism for generating an electrical current disposed within the chamber, and mechanism for transferring the electrical current from the chamber; the chamber including first and second sidewall sections spaced from each other over at least a portion of their surfaces, endwall sections connecting the sidewall sections, the sidewall sections and the endwall sections being connected to each other to form a substantially liquid tight chamber, the anchoring mechanism including mechanism for maintaining the first of the sidewall sections remote from the waves and fixed against movement from the action of the waves, the anchoring mechanism including mechanism for anchoring the second of the sidewall sections in the path of the waves while permitting the second sidewall section to be moved by the action of the waves, the generating mechanism including co

Abstract: New and improved methods and means are described for the efficient, expeditious, economical, and safe conversion to usable form of almost all subsurface wave energy available within a predetermined annular region spanned by an array of submerged wave energy removing impellers mounted upon an annular outrigger surrounding and secured to a seagoing central platform. Maximal progressive inward attenuation of practically any state of the open sea is achieved over a very broad wave frequency band by buoyant, nonbuoyant, and neutrally buoyant impellers that function approximately as generalized simple pendulums whose natural frequencies fall at regular intervals throughout that frequency band. Optimal functioning of the impellers is achieved by assigning to their working members suitable degrees of omnidirectional response to water movement interial and drag forces, respectively.

Abstract: A power unit comprises a resonator having a mouth located in the sea and containing a body of water and an air cushion above the body of water. This resonator can have a neck defining a relatively small flow area compared with the surface area of the body of water immediately below the cushion. The air cushion is controlled to cause the water to resonate in response to pressure fluctuations resulting from wave motions in the sea, thereby developing fluctuations of increased pressure. The unit is constructed so that the increased pressure fluctuations create a fluid flow, which is then utilized in a suitable manner.