| Patents for F03B 13 - Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates (15,575) |
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| 11/13/1991 | CN1014739B Dynamic energy output method of natural flow force of wave in river or sea and its hinge-type water turbine |
| 10/28/1991 | WO1991017359A1 Hydro-electric power conversion system |
| 10/28/1991 | CA2081208A1 Hydro-electric power conversion system |
| 10/23/1991 | CN1055580A Marine power station |
| 10/16/1991 | EP0452251A1 Driving- and supply-unit for spray- or surface-cooler |
| 10/08/1991 | CA1290221C Floating tidal power plant to be placed in seas and rivers for gaining energy |
| 10/05/1991 | CA2039246A1 Driving and supply unit for a cooler |
| 10/01/1991 | US5052902 Water-wave-energy converter |
| 09/18/1991 | EP0446356A1 Method of sea-wave energy conversion and wave energy installation for implementation thereof |
| 09/12/1991 | DE4006973A1 Utilisation of the energy of sea waves - by devices which stir up sand to rebuild sand dunes |
| 09/04/1991 | EP0444059A1 Cooling system for the chamber of a generator/transmission unit. |
| 08/27/1991 | US5043592 Water fitting for sanitary installations |
| 08/08/1991 | WO1991011614A1 Electrical power generation using tidal power |
| 07/22/1991 | CA2008223A1 Machine for transforming pressure or potential energy of a fluid into mechanical work |
| 07/10/1991 | EP0436023A1 Multiple gaseous phase system tide range power generation method |
| 07/03/1991 | CN2080106U Float water collecting multi-cilynder water pumping device |
| 06/25/1991 | US5027000 Method and apparatus for generating electricity using wave energy |
| 06/25/1991 | CA1285148C System for subterranean storage of energy |
| 06/20/1991 | DE3941973A1 Wave-powered energy plant - has controlled flaps for periodic closure of peripheral drum chambers around rotational shaft |
| 06/13/1991 | WO1991008369A1 Turbo-drill |
| 06/13/1991 | DE3941004A1 Water wheel with ventilation tube interconnecting two chambers - alternately water-filled and emptied through ports in regions of junction of cylinder wall and partition |
| 06/08/1991 | CA2030853A1 Power generating unit for hydroelectric power generation |
| 05/29/1991 | DE3938749A1 Drill turbine for deep boring has housing for coupling to drill pipe - and rotor driven by flushing fluid and coupled to drill bit, in unit having short length and high efficiency |
| 05/23/1991 | DE3938668A1 Sea wave energy utilising equipment - has pipes of different shapes, moving with waves on floats, and aligning rudders |
| 05/23/1991 | DE3938667A1 Sea water pumping station - has vertical pipe with float moving with waves, and bottom inlet and outlet |
| 05/21/1991 | CA1284289C Apparatus for converting water wave motion to useable energy |
| 05/16/1991 | WO1991007587A1 Water current energy converter |
| 05/16/1991 | CA2068717A1 Water current energy converter |
| 04/24/1991 | CN1050922A Gas-closed limiting surface upright shaft seal |
| 04/23/1991 | US5009568 Wave actuated power generating apparatus |
| 04/10/1991 | EP0421010A1 Wave powered pumping apparatus and method |
| 04/09/1991 | US5005357 Oscillating force turbine |
| 04/03/1991 | CN2074375U Generating equipment of gentle running water |
| 03/27/1991 | EP0412088A4 Closed system, standpipe operated hydroelectric power plant |
| 03/20/1991 | EP0371093A4 Wave generator |
| 03/05/1991 | US4996840 Apparatus for generating rotary motion from rise and fall motion of waves |
| 02/27/1991 | EP0157830B1 Ultrasonic flow-control system |
| 02/19/1991 | US4993348 Apparatus for harvesting energy and other necessities of life at sea |
| 02/14/1991 | DE3924673A1 Utilisation of energy in flowing water - by generator driven by impeller mounted on sea bed housing positioned by stabilising fins |
| 02/13/1991 | EP0412088A1 Closed system, standpipe operated hydroelectric power plant |
| 02/07/1991 | DE3924405A1 Piston type pump for pumping water from silo - has compression spring to drive piston on delivery stroke |
| 02/06/1991 | EP0411637A1 Automatic apparatus for aerating and purifying sea-water |
| 01/31/1991 | DE3924477A1 Water energy recovery system - uses buoyancy bodies or water wheels, without turbines |
| 01/30/1991 | CN1011435B Float type wave energy extraction apparatus and method |
| 01/24/1991 | WO1991000962A1 Method and wave-energy installation for transformation of wave energy |
| 01/24/1991 | DE3922724A1 Wave-powered electrical energy generation plant - uses angled guide surfaces directing waves to propeller turbines driving respective generators |
| 01/16/1991 | EP0292545B1 Floating power plant to be placed in seas and rivers for gaining energy |
| 01/09/1991 | CN1048432A Hydraulic power generation (in natural current) without drop |
| 12/11/1990 | US4976319 Water driven fan for firefighting |
| 12/05/1990 | EP0400688A2 Ultrasonic flow-control system |
| 12/05/1990 | EP0400000A1 Procedure for energy production in power plants installed in a room under the water surface of a head store. |
| 11/29/1990 | DE3916902A1 Utilisation of power of sea waves aboard ship - involves set of hinge blades oscillated by action of waves |
| 11/28/1990 | CN1047367A Floating water turbo generator set |
| 11/21/1990 | CN2066081U Device directly using river and sea moving water energy |
| 11/21/1990 | CN1010498B Pneumatic hydro-electric power coversion system using air as middle medium |
| 11/13/1990 | CA1276073C Rotary joint |
| 10/31/1990 | DE4008976A1 Installation for generating electricity - has generator driven by water turbine and pump to return water to supply tank |
| 10/30/1990 | US4966254 Apparatus for converting extrinsic useless oscillation motions into useful torque |
| 10/30/1990 | US4965998 Mini hydro electric plant |
| 10/25/1990 | DE4009022A1 Generation of electricity by wind-power - by using windmill to drive water pump which drives turbine |
| 10/25/1990 | DE3913755A1 Utilisation of wave power - involves pump actuated by rising and falling floats to generate electricity |
| 10/24/1990 | CN1046372A Water trough-type power station |
| 10/24/1990 | CN1010116B Hydraulic tide-generator based on horizontal movement of pontoon |
| 10/16/1990 | US4963780 Water driven generator for sanitary domestic installation |
| 10/16/1990 | US4962818 Downhole motor with an enlarged connecting rod housing |
| 10/11/1990 | DE3911125A1 Turbine |
| 10/10/1990 | EP0390980A1 Device for obtaining energy from water |
| 10/10/1990 | CN1046023A Apparatus for converting extrinsic useless oscillation motions into useful torque |
| 10/04/1990 | WO1990011445A1 Labrador water-wave energy converter |
| 10/03/1990 | EP0389707A1 Apparatus for converting extrinsic useless oscillatory motions into useful torque |
| 10/03/1990 | CN1045844A Electric power generation by pipe-flow water storage |
| 09/27/1990 | DE3909151A1 Wave power installation utilising the kinetic energy of water waves, in particular the energy from horizontal travelling wave motion, for driving generators or pumps |
| 09/18/1990 | CA1274147A1 Design portable tide gravity electric generator |
| 09/12/1990 | EP0386883A2 Ventilating fan for fire fighting |
| 09/11/1990 | US4955789 Duplex turbine replacement unit and method |
| 09/04/1990 | US4954052 Wave powered pump |
| 08/29/1990 | EP0384757A1 A fluid turbine |
| 08/22/1990 | EP0157764B1 Power generation from waves on the surface of bodies of water |
| 08/16/1990 | EP0381670A1 Installation for converting the kinetic energy of waves to mechanical energy. |
| 07/10/1990 | US4940387 Water turbine arrangement for power generation |
| 06/28/1990 | EP0365600A4 Macro-engineering process for all-weather at-sea wind-energy extraction. |
| 06/20/1990 | CN2058400U Caterpillar wave water plate type hydraulic electrogenerating ship |
| 06/19/1990 | CA1270421A1 Float type wave energy extraction apparatus |
| 06/14/1990 | WO1990006442A1 Method of sea-wave energy conversion and wave energy installation for implementation thereof |
| 06/13/1990 | DE3841344A1 Superpressure hydroelectric power plant |
| 06/12/1990 | US4932482 Downhole motor with an enlarged connecting rod housing |
| 06/06/1990 | EP0371093A1 Wave generator. |
| 06/06/1990 | CN1042753A Electricity generating device by sea wave |
| 06/05/1990 | US4931662 Wave energy system |
| 05/30/1990 | CN1042585A Transmission-generator-cooling apparatus of the shaft |
| 05/17/1990 | WO1990005403A1 Cooling system for the chamber of a generator/transmission unit |
| 05/09/1990 | CN1041991A Domestic miniature current velocity generator |
| 05/03/1990 | WO1990004718A1 Wave power conversion |
| 05/02/1990 | EP0365600A1 Macro-engineering process for all-weather at-sea wind-energy extraction. |
| 04/26/1990 | DE3904442C1 Device for converting wave lifting energy into rotational energy |
| 04/26/1990 | DE3835548A1 Float ratchet (water-wave power station) |
| 04/25/1990 | EP0365325A1 Wave powered prime mover |
| 04/19/1990 | DE3835413A1 Water-bucket elevator |
| 04/18/1990 | CN1007641B Apparatus of vertical-axis kaplan water turbine |
| 04/10/1990 | US4914915 Wave powered turbine |