| Patents for B63H 5 - Arrangements on vessels of propulsion elements directly acting on water (3,934) |
|---|
| 07/24/1991 | EP0438087A1 Shafting strut for ship's propulsion |
| 07/23/1991 | CA2033429A1 Replaceable skeg for a marine propulsion device |
| 07/09/1991 | US5030149 Power transmission arrangement for contra-rotating propeller shafts |
| 06/26/1991 | EP0433510A1 Protection device for outboard motor propellors |
| 06/18/1991 | US5024639 "Z" type steerable balanced power transmission |
| 06/11/1991 | US5022370 Internal combustion engine |
| 06/05/1991 | CN2078290U Fishnet preventing device for tail shaft |
| 05/23/1991 | DE4040412A1 Multi-blade marine propeller - has even-pitch blades in axial alignment on hub for continuous grip on water-flow |
| 05/21/1991 | US5017168 Counter-rotating boat propeller drive |
| 05/21/1991 | US5017167 Line and weed cutter |
| 05/21/1991 | US5017165 Apparatus for automatically raising and lowering boat motors |
| 05/16/1991 | DE4033918A1 Propeller for ship for inland navigation - has two or more blade sets mounted one behind other |
| 05/16/1991 | DE3943537A1 Inflatable boat with paddle-wheels - is steered by disconnecting one or other paddle-wheel from pedal driven shaft |
| 05/15/1991 | CN2076961U Ship honeycomb duct |
| 05/08/1991 | EP0425723A1 Immersed propeller drive |
| 05/02/1991 | WO1991005696A1 Asymmetric hydrofoil propulsion method and apparatus |
| 05/02/1991 | EP0425101A2 Improvements in drive transmissions |
| 05/02/1991 | DE3935754A1 Drive for mobile offshore installation - has ducted impeller with integral rotor inside shaped duct |
| 04/23/1991 | US5009621 Torque splitting drive train mechanism for a dual counterrotating propeller marine drive system |
| 04/23/1991 | US5009620 Propeller guard |
| 04/17/1991 | EP0321501B1 Boat propeller |
| 04/16/1991 | US5007869 Prop-saver (propeller guard device) |
| 04/16/1991 | US5007868 Replaceable skeg for a marine propulsion device |
| 04/16/1991 | US5007867 Weed ring for trolling motor |
| 04/16/1991 | CA1283004C Propeller device for a vessel |
| 04/02/1991 | US5004439 Speed detecting device for marine propulsion unit |
| 03/27/1991 | EP0418599A1 Power transmission arrangement for contra-rotating propeller shafts |
| 03/19/1991 | CA2025507A1 Nozzle propeller device |
| 03/14/1991 | DE3928955A1 Paddle driven inflatable boat - has paddle blades which rotate through 90 deg. about radial fixing arm |
| 03/13/1991 | CN1049826A Double-reaction full-swinging propelling device |
| 03/05/1991 | US4997414 Torque equalizer for contrarotary shafts |
| 02/26/1991 | US4995839 Apparatus for automatically raising and lowering boat motors |
| 02/19/1991 | US4993977 Water jet propulsion module |
| 02/19/1991 | US4993848 Thrust bearing system for counter-rotating propeller shafts, particularly ships propeller shafts |
| 02/14/1991 | DE3926584A1 Ship's propulsion system by surrounding water acceleration - uses four long, straight tubes along ship's hull, below water level for thrust generation |
| 02/07/1991 | DE3925414A1 Ship propulsion system - uses variety of gear reduction systems to reduce rotational speed of propellers to increase energy efficiency by reducing turbulence |
| 02/06/1991 | EP0411056A1 Double nozzle. |
| 01/23/1991 | EP0408618A1 Rotary machine with non-positive displacement, for use as a pump, compressor, propulsion unit, generator or drive turbine |
| 01/16/1991 | EP0407630A1 Propulsion for hydrofoils |
| 01/16/1991 | EP0407424A1 Marine drive lower unit with thrust bearing rotation control |
| 01/09/1991 | EP0406451A1 Marine propulsion apparatus |
| 01/09/1991 | EP0238649B1 Propeller tunnel baffle |
| 01/02/1991 | EP0404784A1 Balanced marine surfacing drive. |
| 01/01/1991 | US4981452 Surface drive outboard with improved transmission |
| 12/27/1990 | WO1990015753A1 Water jet propulsion module |
| 12/27/1990 | WO1990015750A1 Water supporting and propulsion systems |
| 12/27/1990 | EP0403513A1 Marine drive lower unit with sequentially loaded multiple thrust bearings |
| 12/25/1990 | US4979916 Canoe paddle assembly |
| 12/19/1990 | EP0403053A2 Drive transmission |
| 12/19/1990 | CN1010849B Propeller device for vessel |
| 12/18/1990 | US4977845 Boat propulsion and handling system |
| 12/11/1990 | US4976640 Marine propulsion device with elastomeric cushion |
| 12/11/1990 | US4976638 Surface drive for marine craft having inboard engine |
| 11/28/1990 | CN2066416U Pedal boat |
| 11/27/1990 | US4973275 Method and arrangement on a vessel |
| 11/22/1990 | DE4004514A1 Ducted propeller for aircraft or ship - has axially sliding cones to vary effective areas of duct inlet and outlet |
| 11/07/1990 | EP0396518A1 Steering shock absorber for boat propeller drive units |
| 11/07/1990 | CN1046713A Propeller protector |
| 10/25/1990 | DE3912910A1 Jet-propulsion unit for boat or aircraft - comprises rotary jet pipe with internal auger or blades forming driving members |
| 10/20/1990 | CA2014260A1 Steering shock absorber for boat propeller drive units |
| 10/16/1990 | US4963108 Marine contra-rotating propeller drive system |
| 10/06/1990 | WO1990011928A1 Propulsion system suitable for use on watercraft |
| 10/06/1990 | CA2049939A1 Propulsion system suitable for use on watercraft |
| 10/03/1990 | EP0389979A2 Z-type stearable balanced power transmission |
| 09/25/1990 | US4959032 Water craft with guide fins |
| 09/25/1990 | CA1274424A1 Marine propulsion unit |
| 09/25/1990 | CA1274423A1 Stern apron for ice breakers |
| 09/18/1990 | US4957461 Idling noise silencer for marine propulsion unit |
| 09/18/1990 | US4957459 Propeller shroud with load bearing structure |
| 09/18/1990 | US4957458 Flow guiding face(s) for a ship |
| 09/04/1990 | US4954108 Line cutter for marine propellers |
| 09/04/1990 | US4953492 Water supporting and propulsion systems |
| 09/04/1990 | CA1273532A1 Line cutting device |
| 08/08/1990 | EP0380539A1 Improved retractable propulsor for boats |
| 07/26/1990 | WO1990008271A1 Device for contra-rotating two concentric shafts |
| 07/26/1990 | WO1990008061A1 Marine propulsion apparatus |
| 07/25/1990 | CN2059651U Partition for realigning water flow |
| 07/24/1990 | US4943249 Line cutter for propellers |
| 07/24/1990 | US4942722 Plant harvester |
| 07/17/1990 | US4941423 Marine propulsion system |
| 07/11/1990 | CN1008718B Ship having stern propeller and method of operating the ship |
| 07/10/1990 | US4940436 Marine drive system with inboard mounted engine and depending drive unit |
| 07/03/1990 | US4938724 Line cutting device |
| 06/28/1990 | WO1990006883A1 Apparatus for automatically raising and lowering boat motors |
| 06/26/1990 | US4936803 Propeller assembly |
| 06/26/1990 | US4936746 Counter-rotation pitch change system |
| 06/26/1990 | CA1270700A1 Shrouded propeller |
| 06/14/1990 | WO1990006256A1 Steering mechanism in a boat propulsion system |
| 06/13/1990 | CN2058163U Recreation boat |
| 06/13/1990 | CA2005013A1 Apparatus for automatically raising and lowering board motors |
| 06/12/1990 | US4932908 Energy efficient asymmetric pre-swirl vane and twisted propeller propulsion system |
| 06/12/1990 | US4932907 Chain driven marine propulsion system with steerable gearcase and dual counterrotating propellers |
| 06/05/1990 | US4931026 Jet propeller |
| 05/29/1990 | US4929204 Water entry preventing structure for inboard/outboard motor |
| 05/28/1990 | CA2003411A1 Steering mechanism in a boat propulsion system |
| 05/23/1990 | DE3839086A1 Arrangement for transmitting thrust between a rudder propeller and the hull of a vessel |
| 05/22/1990 | US4927393 Fixing structure for bellows of marine propulsion device |
| 05/17/1990 | DE3937327A1 Ship's drive with twin propellers - whose axes lie near centre point of stern vortex between starboard and port sides |
| 05/15/1990 | US4925412 Marine drive weed deflector |
| 05/02/1990 | EP0281565B1 Line cutting device for mounting around a propeller shaft |