Having Fluid Flow Or Wave Controlling, Confining Or Directing Means Patents (Class 60/502)
  • Patent number: 4683719
    Abstract: A man-made floating island includes platform units above the water with vertical members extending downwardly therefrom on which movable floats are mounted which move in response to wave action. Motion of the floats operates air compressors and the resulting compressed air is either converted to transmissible energy or stored in reservoirs for future use. Wave amplifiers may be disposed beneath the movable floats.
    Type: Grant
    Filed: December 27, 1985
    Date of Patent: August 4, 1987
    Inventor: Bonifac Martinak
  • Patent number: 4599857
    Abstract: The present invention relates to an apparatus for the generation of power and its method comprising two cylinders, and pistons disposed in the cylinders, and a lever arm containing weighted balls disposed therein and connected to the pistons, whereby the balls are transferred from one end portion of the lever arm to the other end portion thereof and the lever arm, moves up and down about its axis by the force of floats or pistons and the weighted balls.
    Type: Grant
    Filed: March 21, 1985
    Date of Patent: July 15, 1986
    Inventors: Myung K. Kim, Se E. Lee
  • Patent number: 4594853
    Abstract: An apparatus for generating power from the wave motion of the oceans has a resonant chamber operating in the fundamental mode with a float in the chamber. The chamber amplifies the amplitude of the ocean waves.
    Type: Grant
    Filed: March 12, 1984
    Date of Patent: June 17, 1986
    Assignee: Wave Power Industries
    Inventors: Fredric Raichlen, Jiin-Jen Lee
  • Patent number: 4580400
    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.
    Type: Grant
    Filed: May 15, 1985
    Date of Patent: April 8, 1986
    Assignee: Muroran Institute of Technology
    Inventors: Tomiji Watabe, Hideo Kondo, Kenji Yano
  • Patent number: 4462211
    Abstract: A wave energy harvesting apparatus includes a float which rises and falls with wave movements across the surface of a body of water. A hollow tube having a turbine located inside thereof is located vertically downward from the float and is connected to the float by connecting members. The hollow tube is positioned at a depth which is essentially displaced sufficient from the surface of the body of water so as not to be influenced by vertical water movement associated with the waves moving across the surface of the body of water. The tube, however, is moved upwardly and downwardly through the water at that depth in response to movement of the float by the waves on the surface of the water. Movement of the tube upwardly and downwardly at the depth causes rotation of the turbine located in the tube, with the turbine in turn rotating the connecting member to transfer the rotational motion to the surface, wherein this rotational motion is then utilized to drive a generator or the like.
    Type: Grant
    Filed: July 8, 1983
    Date of Patent: July 31, 1984
    Inventor: Hal R. Linderfelt
  • Patent number: 4447740
    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.
    Type: Grant
    Filed: October 13, 1981
    Date of Patent: May 8, 1984
    Inventor: Louis J. Heck
  • Patent number: 4405866
    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.
    Type: Grant
    Filed: October 9, 1981
    Date of Patent: September 20, 1983
    Assignees: Japan Marine Science, Technology Center, Fuji Electric Company, Ltd.
    Inventors: Yoshio Masuda, Takeaki Miyazaki, Osamu Yamada, Akira Hiramoto
  • Patent number: 4400940
    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.
    Type: Grant
    Filed: February 26, 1981
    Date of Patent: August 30, 1983
    Assignee: Muroran Institute of Technology
    Inventors: Tomiji Watabe, Hideo Kondo, Kyokai Okuda, Kenji Yano, Seiichi Asano
  • Patent number: 4392061
    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.
    Type: Grant
    Filed: March 1, 1982
    Date of Patent: July 5, 1983
    Inventors: Yves Dubois, Francois Y. Dubois
  • Patent number: 4385492
    Abstract: This invention relates to turbines which are arranged to be driven by an oscillating flow of working fluid especially by movement of air above a naturally moving body of water. Conventional turbines require four valves to direct an oscillating flow of fluid to cause continuous unidirectional turning of a single rotor.
    Type: Grant
    Filed: September 17, 1980
    Date of Patent: May 31, 1983
    Assignee: The English Electric Company Limited
    Inventor: Alan S. Lee
  • Patent number: 4379235
    Abstract: A wave motion motor is disclosed with an impeller moved by a float. The float is coupled to a swivel arrangement to turn in the direction of wave current and has an inclined underside. Also disclosed are means to adjust to tide level and triangular coupling means between the float and a flywheel.
    Type: Grant
    Filed: March 9, 1981
    Date of Patent: April 5, 1983
    Inventor: John A. Trepl, II
  • Patent number: 4277690
    Abstract: A plant for utilizing kinetic energy inherent in the wave movement of water or heaving of the sea. The plant comprises a float unit and energy absorption apparatus connected to the unit. The absorption apparatus comprises an immersed piston built into an elongate acceleration pipe, which is open at both ends and substantially vertical, this pipe being connected to the float unit and accompanying it in the wave motion of the water.The piston is connected to a hydraulic motor driving an electric generator.The piston is arranged in a portion with extended cross section upwards in the acceleration pipe.Coupled between the piston and hydraulic motor there is a hydraulic cylinder with a double-sided piston, and a rectifying hydraulic circuit for always supplying hydraulic pressure to the same side of the hydraulic motor.A flywheel can be connected between the hydraulic motor and generator for smoothing out the action of pressure variations on the generator.
    Type: Grant
    Filed: August 7, 1979
    Date of Patent: July 7, 1981
    Inventor: Sven A. Noren
  • Patent number: 4263516
    Abstract: A breakwater for breakwater for breaking the force of waves to protect harbors and beaches and generating electrical power from the waves. The breakwater includes a sloped front wall so that the waves break upwardly along the wall. One or more passages extend through the breakwaver to a lower elevation on the harbor side. Paddle wheels or turbines are disposed in said passages. The force of the waves drives water through said passages and the receding water falling down the face of the wall flows through said passages to provide power to drive the paddle wheel or turbine which, in turn, is connected to drive a generator.
    Type: Grant
    Filed: May 10, 1979
    Date of Patent: April 21, 1981
    Inventor: George M. Papadakis
  • Patent number: 4208876
    Abstract: An apparatus and method for obtaining useful work from or with waves includes a buoyant body having a leading edge and a trailing edge, and a convex upper surface extending between the leading and trailing edges. The upper surface is configured with a gradually sloping shape from the leading edge toward the trailing edge and terminates at the trailing edge in a sharply oppositely sloping surface, whereby the circular or orbital motion of water particles in waves is converted by the upper surface to linear flow of the water particles, and waves traveling across the surface from the leading to the trailing edge are not damped or extinguished by backwash of waves from the trailing edge toward the leading edge.
    Type: Grant
    Filed: October 27, 1978
    Date of Patent: June 24, 1980
    Inventor: Junjiro Tsubota
  • Patent number: 4208875
    Abstract: An apparatus and method for obtaining useful work from or with waves includes a buoyant body having a leading edge and a trailing edge, and a convex upper surface extending between the leading and trailing edges. The upper surface is configured with a gradually sloping shape from the leading edge toward the trailing edge and terminates at the trailing edge in a sharply oppositely sloping surface, whereby the circular or orbital motion of water particles in waves is converted by the upper surface to linear flow of the water particles, and waves traveling across the surface from the leading to the trailing edge are not damped or extinguished by backwash of waves from the trailing edge toward the leading edge.
    Type: Grant
    Filed: October 27, 1978
    Date of Patent: June 24, 1980
    Inventor: Junjiro Tsubota
  • Patent number: 4179886
    Abstract: An apparatus and method for obtaining useful work from or with waves includes a buoyant body having a leading edge and a trailing edge, and a convex upper surface extending between the leading and trailing edges. The upper surface is configured with a gradually sloping shape from the leading edge toward the trailing edge and terminates at the trailing edge in a sharply oppositely sloping surface, whereby the circular or orbital motion of water particles in waves is converted by the upper surface to linear flow of the water particles, and waves traveling across the surface from the leading to the trailing edge are not damped or extinguished by backwash of waves from the trailing edge toward the leading edge.
    Type: Grant
    Filed: November 8, 1977
    Date of Patent: December 25, 1979
    Inventor: Junjiro Tsubota
  • Patent number: 4073142
    Abstract: In a preferred embodiment of the invention, a series of off-set rows of spaced-apart upwardly and downwardly reciprocatable floats are mountedly positioned with predetermined distances and positions relative to one-another such that radially-outwardly traveling turbulances resulting from upward and downward reciprocation of the floats coincide with one-another and with current and/or wave water forces to result in amplified strokes of reciprocation of the floats, and the process of subjecting the floats to such forces, and pooling the energy of a plurality of such floats into a common driving force.
    Type: Grant
    Filed: May 16, 1975
    Date of Patent: February 14, 1978
    Inventor: Michael G. Tornabene
  • Patent number: 4048801
    Abstract: In a preferred embodiment of the invention, a plurality of spherical float elements mounted on levers which levers are each mounted for reciprocation along elongated axes thereof substantially vertically thereof to the sea bottom, with interconnected drive shafts for mutually contributing to a common drive, the plurality are arranged with forward and rearwardly and laterally off-set-spaced floats relative to one another and relative to a direction of wave movement from forwardly to rearwardly, such that energy in the form of water pressure waves above and below the water surface are deflected laterally and rearwardly from the forward float elements to the rearward elements to impel against the rearward elements together with the impelling of the normal waves or residual waves also impelling against each of forward and rearward waves, and the process of arranging the plurality of spherical float elements and of harnessing the deflected energy thereby.
    Type: Grant
    Filed: April 11, 1975
    Date of Patent: September 20, 1977
    Inventor: Michael G. Tornabene
  • Patent number: 4026587
    Abstract: An underwater turbine operated by prevailing ocean currents in which the generator casing has a large enough interior to house the generator and still provide space for an operator to enter the casing interior to inspect the generator and the electrical connections. The casing is swingably mounted on a base that rests on the ocean floor and a propeller for rotating the generator at a proper and constant speed is rotatably mounted at the forward end of the casing while a tail or fins extend from the rear of the casing for the purpose of keeping the propeller facing in the direction of the incoming water current regardless of the slight variations in the current flow. The casing is hermetically sealed and has an entrance hatch which, when opened, permits the operator to enter the casing interior.
    Type: Grant
    Filed: April 24, 1975
    Date of Patent: May 31, 1977
    Inventors: Robert H. Hultman, Dennis C. Hultman
  • Patent number: 3952517
    Abstract: A buoyant ram motor comprising a hollow buoyant ram element movable within a housing into which liquid such as water is admitted in a manner applying a buoyant force to the ram and moving or lifting it up along the interior of the housing. After each power stroke, the liquid is removed from the housing to lower or return the ram to an initial or starting position for the next power stroke. The liquid for moving the ram can be obtained from natural water bodies. The force applied to the ram during each power stroke is augmented by providing a vacuum in the housing on and exposed to the surface of the ram opposite the surface to which the buoyant force is applied. During each return stroke, liquid is removed from beneath the ram in a manner preserving the vacuum over the ram. This is accomplished by an arrangement including a chamber communicating with the liquid below the ram and containing a weighted cylinder supported on a flexible container filled with compressed air.
    Type: Grant
    Filed: October 3, 1973
    Date of Patent: April 27, 1976
    Inventor: Bert J. Decker