| Patents for B63H 1 - Propulsive elements directly acting on water (4,187) |
|---|
| 05/22/1990 | US4926777 Aquatic wheelchair |
| 05/17/1990 | DE3937327A1 Ship's drive with twin propellers - whose axes lie near centre point of stern vortex between starboard and port sides |
| 05/10/1990 | DE3835213A1 Wing construction for energy transmission in the media of water and gas, and for a vehicle for movement on land or water and in the air |
| 05/01/1990 | US4921404 Propellors for watercraft |
| 04/25/1990 | CN2056413U Hollow ship's propeller |
| 04/19/1990 | WO1990004102A1 Wind-driven rotor |
| 04/18/1990 | EP0364020A1 Rotor for a wind motor |
| 04/03/1990 | US4913670 Blade-like profiled device for acting on a gaseous or liquid fluid flow |
| 04/03/1990 | US4913669 Boat propulsion apparatus |
| 04/03/1990 | CA2000105A1 Windgetriebener rotor |
| 03/28/1990 | EP0360639A1 Marine propeller |
| 03/27/1990 | US4911665 Gearcase exhaust relief for a marine propulsion system |
| 03/27/1990 | CA1267045A1 Propeller with blades having regressive pitch |
| 03/08/1990 | WO1989008580A3 Energy efficient asymmetric pre-swirl vane and twisted propeller propulsion system |
| 02/21/1990 | CN1039766A Submersible |
| 02/14/1990 | EP0354375A1 Low-resistant hydrofoil |
| 02/07/1990 | EP0353672A2 Composite propeller blades |
| 02/07/1990 | CN2052395U Steel structure reinforced fibreglass of the propeller |
| 02/07/1990 | CN1039471A Low resistance submerged wing |
| 01/23/1990 | CA1264609A1 Stern tube bearing system of contra-rotating propeller |
| 01/10/1990 | CN1038686A Rotary machine with non positive displacement usable as pump, compressor, impeller, generater or turbine |
| 01/02/1990 | US4891025 Arrangement in boat propeller installations |
| 12/12/1989 | US4886475 Steering apparatus for an inflatable raft |
| 12/12/1989 | CA1263825A1 Propeller combination for a boat propeller unit |
| 11/30/1989 | DE3817515A1 Screw propeller for the propulsion of watercraft |
| 11/29/1989 | CN1005907B 船舶 Shipping |
| 11/16/1989 | DE3816430A1 Edge vortex scatter plate for blade tips of aerodynamic and hydrodynamic wings and control surfaces |
| 11/16/1989 | DE3815283A1 Flapping wing inertia control |
| 11/02/1989 | WO1989010298A1 Driving device for the propulsion of waterborne craft |
| 10/26/1989 | DE3812197A1 Arrangement of a drive system driven by muscle power for water craft, in particular for rowing (row) boats of different design |
| 10/25/1989 | CN1036535A Adjustable propeller |
| 10/24/1989 | US4875829 Marine propeller |
| 10/11/1989 | EP0336344A1 Device with cavitational effect for propellers of watercraft with a planing or semiplaning keel |
| 10/11/1989 | EP0336054A1 Variable-pitch propeller |
| 10/10/1989 | US4872861 Glide board with rudder |
| 10/05/1989 | WO1989009342A1 Rotary machine with non-positive displacement, for use as a pump, compressor, propulsion unit, generator or drive turbine |
| 09/27/1989 | EP0334737A1 Rotary non-positive machine, applicable as pump, compressor, propellor, generator or motive turbine |
| 09/21/1989 | WO1989008580A2 Energy efficient asymmetric pre-swirl vane and twisted propeller propulsion system |
| 09/20/1989 | CN2044575U Propeller with wave force |
| 09/19/1989 | US4867716 Boat |
| 09/13/1989 | EP0209522B1 Device for producing a directed liquid flow |
| 09/12/1989 | US4865520 Marine propeller with addendum |
| 09/08/1989 | WO1989008045A1 Balanced marine surfacing drive |
| 08/16/1989 | CN2042819U Umbrella-sail propelling ship and umbrella-sail type electric power generating device |
| 08/02/1989 | CN1034340A Umbrella shope thruster with micro noise |
| 08/01/1989 | CA1258005A1 Transom bracket water deflector for improved boat performance |
| 07/13/1989 | DE3744582A1 Keel having wings arranged on both sides, in particular for ocean-going sailing yachts |
| 07/11/1989 | US4846091 Linear propeller |
| 07/06/1989 | DE3742581A1 Marine-propeller thrust intensifier |
| 06/27/1989 | US4842561 Aquatic vehicle |
| 06/27/1989 | US4842483 Propeller and coupling member |
| 06/06/1989 | US4836748 Ring propeller |
| 06/06/1989 | CA1255160A1 Thrust augmenter |
| 05/30/1989 | CA1254799A1 Multi-bladed propeller and shaft assembly |
| 05/03/1989 | CN2036933U Rotary barrel type variable pitch propeller |
| 05/02/1989 | US4826404 Marine propeller and hub assembly |
| 04/27/1989 | DE3734893A1 Boat propulsion systems |
| 04/20/1989 | WO1989003340A1 Marine propeller with optimized performance blade contour |
| 04/19/1989 | EP0201500B1 A device in fluid pressure generators |
| 04/18/1989 | US4822308 Marine steering and propulsion system |
| 03/29/1989 | CN1031975A Screw propeller boss cap with fins |
| 03/23/1989 | DE3729651A1 Arrangement of a muscle-powered propulsion system for watercraft, in particular for row-boats of various designs |
| 03/08/1989 | EP0306388A1 Modular watercraft with rotating floats |
| 02/07/1989 | US4802872 Regulated aeration of gases exhausting through a propeller |
| 02/07/1989 | US4802822 Marine propeller with optimized performance blade contour |
| 02/02/1989 | DE3724701A1 Screw (propeller) for gaseous or liquid media, especially an airscrew |
| 01/31/1989 | US4801243 Adjustable diameter screw propeller |
| 01/25/1989 | EP0300683A1 Marine propeller |
| 01/24/1989 | CA1249185A1 Rotor system, particularly a boat propeller system |
| 01/18/1989 | CN1030388A Ship's auxiliary propeller |
| 01/10/1989 | US4797066 Turbine wheel having hub-mounted elastically deformable blade made of reinforced polymeric composite material |
| 01/04/1989 | CN2030173U New type small rowboat |
| 12/29/1988 | WO1988010207A1 Propellers |
| 12/28/1988 | EP0296598A1 Propulsion auxiliary device |
| 12/22/1988 | DE3718954A1 Propeller arrangement, in particular for ship propulsion plants |
| 12/21/1988 | EP0295247A1 Device at members forming part of a turbo machinery and a method of producing such members. |
| 12/13/1988 | US4790782 Balanced marine surfacing drive |
| 12/06/1988 | US4789306 Marine propeller |
| 11/22/1988 | US4786264 Stern tube bearing system of contra-rotating propeller |
| 11/22/1988 | US4785756 Vessel having propeller arranged on vertical hull center plane |
| 11/10/1988 | DE3713550A1 Container submarine |
| 11/08/1988 | CA1244293A1 Ship propulsion system |
| 11/02/1988 | EP0289471A1 Arrangement for conducting air or exhaust gas into the swept field of a propeller |
| 10/25/1988 | US4780058 Stable fluid foil section |
| 10/20/1988 | DE3711198A1 Impeller wheel |
| 10/20/1988 | DE3640780A1 Ideal aerofoil section for the wings (vanes) of fluid-dynamic installations |
| 10/18/1988 | US4778419 Reverse thrust propeller |
| 09/28/1988 | EP0272319A4 A fluid powered motor-generator apparatus. |
| 09/22/1988 | DE3708159A1 Wing |
| 09/21/1988 | EP0282830A2 Device in a gas or fluid stream with a split airfoil to increase the efficiency |
| 09/20/1988 | US4772237 Paddle boat |
| 09/07/1988 | CN88202327U Boat propeller aerator |
| 09/06/1988 | US4768927 Adjustable folding propeller |
| 08/30/1988 | US4767278 Graphite spheres in cast iron matrix |
| 08/30/1988 | US4767269 Rotor system, particularly a boat propeller system |
| 08/11/1988 | DE3702538A1 Control for automatically adjusting wingtip flaps |
| 07/27/1988 | CN85103966B Ship propulsion apparatus |
| 07/13/1988 | CN87216561U Collapsible boat-oar |
| 07/05/1988 | US4755154 Vibration isolating mount with snubbing means |
| 06/29/1988 | EP0272319A1 A fluid powered motor-generator apparatus. |