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  • [发明专利]US19770783069 _ A. L. KORR ASSOCIATES, INC. 1977年03月30日
    Solar energy is collected by an array of parallel trough-like reflectors of paraboloidal cross-section, and concentrated upon radiation-absorbent pipes positioned along the lines of focus of the reflectors. The array is mounted on a boat which floats ...
  • [发明专利]US19770765045 _ CZAJA, JULIUS 1977年02月02日
    The invention involves thermodynamic processes, heat engines, and ways of making gaseous fluid jets by using primarily the latent heat of condensation for the energy required. A vapor such as water vapor is mixed with a gaseous fluid such as air, and ...
  • [发明专利]US19770844573 _ LA STELLA, JOSEPH P. TORNABENE, MICHAEL G. 1977年10月25日
    A buoy type wave energy extraction construction in which the natural frequency of vertical oscillation of the buoy is mechanically altered to at least partially conform to the wave frequency occurring during a period of operation, whereby the maximum ...
  • [发明专利]US19770827237 _ UNION OIL COMPANY OF CALIFORNIA 1977年08月24日
    A method for producing mechanical energy from geothermal fluids in which a heat transfer fluid (HTF) is heated by direct contact with the hot geothermal fluids, thereby partially cooling the geothermal fluids. A working fluid is heated by direct conta...
  • [发明专利]US19770802908 _ THE SECRETARY OF STATE FOR ENERGY, IN HER BRITANNIC MAJESTY"S GOVERNMENT OF THE UNITED KINDGOM OF GREAT BRITAIN AND NORTHERN IRELAND 1977年06月02日
    A device for extracting energy from water waves comprises high-level and low-level reservoirs with non-return valves for permitting water from wave crests to enter the high-level reservoir (but not return) and for permitting water from the low-level r...
  • [发明专利]US19770804990 _ TIPPS, THOMAS R. 1977年06月09日
    An impeller having an axle with radial vanes is mounted within a housing. The housing includes a funnel to direct a large amount of wind into the impeller. Air fins on top of the housing maintain the funnel pointed into the wind. A flap upon the top o...
  • [发明专利]US19770797232 _ BSP INTERNATIONAL FOUNDATIONS LIMITED 1977年05月16日
    A drop hammer has a hydraulic cylinder and piston assembly with a hammer weight attached to the piston and a sleeve valve at the lower end of the cylinder coaxial with the cylinder. An outer casing surrounds the cylinder, forming an annular passage fr...
  • [发明专利]US19770807987 _ SUNTERRA CORPORATION 1977年06月20日
    A heating and cooling system comprises a first reservoir containing liquid at an elevated temperature, solar collecting means exposed to solar radiation for collecting solar energy and means disposed in thermal exchange relationship with said first re...
  • [发明专利]US19770847041 _ STRUCTURAL COMPOSITES INDUSTRIES, INC. 1977年10月31日
    An improved elongated blade or blade spar comprises successive low-pitch circumferentially wrapped convolutions of a synthetic resin impregnated tape having elongated cut glass and substantially parallel and equal length filaments wherein successive c...
  • [发明专利]US19770793289 _ VALEH, SEYED M H 1977年05月03日
    A mechanical energy device comprising a plurality of energy modules operatively interconnected to generate a mechanical energy output in response to a mechanical energy input. Each energy module comprises a central shaft assembly and power assembly wh...
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