| Patents for B63H 1 - Propulsive elements directly acting on water (4,187) |
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| 12/01/1993 | CN2148029Y Oarlock structure |
| 12/01/1993 | CN2148028Y Three-section oar for raft |
| 11/25/1993 | DE4216531A1 Rotor system with one or more rotor blades - having axes of rotation lying vertical to flow direction of medium and rotor blades arranged on common carrier rotational around axis vertical to carrier plane |
| 11/24/1993 | EP0404784B1 Balanced marine surfacing drive |
| 11/11/1993 | DE4208751A1 Reducing resistance to aerofoil or hydrofoil passing through medium e.g. air or water - uses array of teeth formed on leading and/or trailing edge of aerofoil or hydrofoil section |
| 11/04/1993 | DE4317493A1 Turbulence reduction system for flow surfaces or aircraft or ships' propellers - involves using rotating discs formed integrally with ends of flow surfaces |
| 10/27/1993 | EP0566788A1 Integral motor propulsion unit for water vehicles |
| 10/27/1993 | EP0566787A1 Dual propeller shock resistant submersible propulsor unit |
| 10/21/1993 | DE4212920A1 Muscle-powered catamaran boat - has two fins in line on rocking beam operated by hand-lever and tread plate |
| 10/20/1993 | CN1022505C Non variable capacitance type rotary machine |
| 10/13/1993 | EP0391921B1 Marine propeller with optimized performance blade contour |
| 10/12/1993 | US5252875 Integral motor propulsor unit for water vehicles with plural electric motors driving a single propeller |
| 10/12/1993 | US5252028 Marine propeller assembly with shock absorbing hub and easily replaceable propeller housing |
| 10/07/1993 | DE4211202A1 Marine screw with interchangeable blades - has keyway coupling between blade roots and screw hub |
| 10/05/1993 | US5249993 Weed resistant boat propeller |
| 09/13/1993 | CA2088566A1 Pedal boat |
| 09/12/1993 | WO1993024360A1 A propeller having optimum efficiency in forward and rearward navigation |
| 09/07/1993 | CA1321929C Dynamic damper on marine propeller or propeller shaft |
| 09/02/1993 | DE4206066A1 Propeller or rotor blades - are designed to reduce eddies and air or water resistance and have toothed leading and trailing edges |
| 09/01/1993 | EP0558153A1 A vessel provided with a rudder blade |
| 09/01/1993 | CN2141398Y 360 deg. full rotation flow-guiding tube propeller engaging machine |
| 08/17/1993 | US5236310 Marine propeller with performance pitch, including five blade version |
| 08/11/1993 | EP0554241A1 Device for orienting rotor blades in a transverse fluid flow and applications |
| 07/28/1993 | EP0406451B1 Marine propulsion apparatus |
| 07/27/1993 | US5230644 Counter-rotating surfacing marine drive |
| 07/25/1993 | CA2086986A1 Individual propelled water craft |
| 06/29/1993 | US5223413 Process for the preparation of vancomycin |
| 06/24/1993 | DE4141827A1 Vessel propulsion with support vanes on rotary axis - has vanes moving at specified angle w.r.t. propulsion direction, with axis at different angle to that direction. |
| 06/15/1993 | US5220231 Integral motor propulsor unit for water vehicles |
| 06/15/1993 | US5219272 Variable pitch marine propeller with hydrodynamic shifting |
| 06/10/1993 | WO1993011038A1 A manually powered ski |
| 06/09/1993 | EP0545666A2 Variable pitch marine propeller with hydrodynamic shifting and shift biasing and synchronizing mechanism |
| 06/01/1993 | US5215483 High speed sea train |
| 05/26/1993 | CN2134351Y Swimming-shrimp type shallow ship propeller |
| 05/25/1993 | US5213525 Jacketed marine propeller |
| 05/19/1993 | DE4137952A1 Propulsion unit for water and aircraft - has number of electromagnetic actuators integrated into single body to generate fluttering pressure wave action. |
| 05/19/1993 | CN1072145A Marine reaction fin arrangement |
| 05/13/1993 | WO1993009027A1 An elastomeric propeller having a flexible blade core |
| 05/13/1993 | WO1993009026A1 An elastomeric propeller having a flexible elastomeric covering |
| 05/13/1993 | CA2122477A1 An elastomeric propeller having a flexible elastomeric covering |
| 05/12/1993 | CN2132685Y Paddling apparatus |
| 04/29/1993 | WO1993008075A1 Propelling/steering system suitable for use on watercrafts |
| 04/28/1993 | CN1071385A Object with stromline profile, especially stabilizing foil in ship |
| 04/27/1993 | US5205767 Propelling system suitable for use on watercraft |
| 04/27/1993 | US5205765 Boat hull and propulsion system or the like |
| 04/27/1993 | US5205653 Bearing assembly and submersible propulsor unit incorporating the same |
| 04/15/1993 | WO1993007051A1 Improvements in and relating to propulsion means |
| 03/23/1993 | US5195872 Paddlewheel apparatus |
| 03/16/1993 | US5194023 Individual propelled water craft |
| 03/09/1993 | US5192237 Aquatic ski with human propulsion generated by deambulatory action |
| 03/09/1993 | US5192191 Propeller vane structure for marine propulsion unit |
| 03/02/1993 | US5190487 Control apparatus for an outboard marine engine |
| 02/18/1993 | WO1993002913A1 Paddlewheel apparatus |
| 02/17/1993 | CN1068995A Osprey type amphibious speedboat |
| 02/11/1993 | DE4125436C1 Propeller with detachable blades - has feet on blades bolting onto depressions in hub and includes streamline sleeve for hub |
| 02/10/1993 | CN2126845Y Rotation ship |
| 02/09/1993 | US5185545 Dual propeller shock resistant submersible propulsor unit |
| 02/04/1993 | WO1993001973A1 A folding propeller with at least two blades |
| 02/04/1993 | WO1993001972A1 A folding propeller with at least three blades |
| 02/02/1993 | US5183423 Propulsion system for speedboats |
| 02/02/1993 | US5183422 Pedal boat |
| 02/02/1993 | US5183384 Foldable propeller assembly |
| 01/20/1993 | EP0523787A1 Floating apparatus propelled by the alternate movement of a person's feet |
| 01/19/1993 | US5180286 Propeller assembly |
| 01/12/1993 | CA1312505C Propeller and coupling member |
| 01/05/1993 | US5176501 Propeller with an elastic sleeve |
| 12/23/1992 | WO1992022459A1 Propulsive thrust ring system |
| 12/22/1992 | CA1311653C Reverse thrust propeller |
| 12/16/1992 | EP0518392A2 Submersible propulser unit |
| 12/16/1992 | CN2124872U Parallel straight wing thruster |
| 12/15/1992 | US5171175 Device with cavitational effect for propellers of watercraft with a planing or semiplaning keel |
| 11/25/1992 | CN2122832U Compound propeller |
| 11/17/1992 | US5163857 Self-propelled boat |
| 11/05/1992 | DE4126060C1 Noise detector for ship propellers - uses acceleration pick=up amplifier and display with voltage corresp. to value above signing frequency as reference |
| 11/04/1992 | EP0511772A2 Bearing assembly and submersible propulsor unit incorporating the same |
| 11/04/1992 | CN2120766U Compound propeller |
| 11/04/1992 | CN2120765U Boat with cylinder wheel |
| 10/27/1992 | US5158433 Marine propeller having an outwardly flared hub |
| 09/24/1992 | DE4203081A1 Helicopter rotor drive system - has electric motor which rotates rotor arm about its own axis |
| 09/23/1992 | EP0504221A1 A propulsion device for a watercraft. |
| 09/22/1992 | CA1307705C Arrangement in boat propeller installations |
| 09/08/1992 | US5145320 Mass loaded composite rotor for vibro-acoustic application |
| 09/02/1992 | EP0500521A1 Ship's propeller. |
| 09/01/1992 | US5144113 Electrically heated deicer for aircraft blades |
| 08/27/1992 | DE4105318A1 Auxiliary propulsion drive for sailing yacht - uses electric motor coupled to battery recharged via IC engine, solar cells and wind or water powered turbine |
| 08/26/1992 | EP0499617A1 Folding propeller |
| 08/18/1992 | US5139391 Rotary machine with non-positive displacement usable as a pump, compressor, propulsor, generator or drive turbine |
| 08/04/1992 | US5135358 Marine propeller theft deterrent system |
| 07/07/1992 | US5127855 Water-borne vehicle |
| 06/30/1992 | CA1304272C Fluid powered motor-generator apparatus |
| 06/25/1992 | WO1992010402A1 Propeller with shrouding ring attached to blades |
| 06/25/1992 | DE4040916A1 Marine craft drive worm - is conically shaped like meat mincer and located in static housing with large aperture for water input |
| 06/18/1992 | CA2032464A1 Helix binary |
| 06/17/1992 | DE4039635A1 Power transmission device for movable wing flying machine - comprises housing contg. movable slide ring to which striker arm is fitted |
| 06/03/1992 | CN1061569A Jet-flow control style for rotorcraft, ship and boat |
| 05/28/1992 | WO1992009474A1 Boat hull and propulsion system or the like |
| 05/28/1992 | CA2097061A1 Boat hull and propulsion system or the like |
| 05/20/1992 | EP0295247B1 Device at members forming part of a turbo machinery and a method of producing such members |
| 05/19/1992 | US5114313 Base vented subcavitating marine propeller |
| 05/14/1992 | DE4201233A1 Shallow draught ship propulsion system - has drive elements on belt to give large propulsion surface |