| Patents for B63H 23 - Transmitting power from propulsion power plant to propulsive elements (3,809) |
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| 08/26/1999 | DE19801448A1 Electric motor drive unit for ship |
| 08/24/1999 | US5941744 Vectored propulsion system for sea-going vessels |
| 08/18/1999 | EP0935553A1 Dual propeller propulsion system for a water craft |
| 08/11/1999 | CN1225608A Pod-like ship propulsion system with synchronous motor |
| 08/10/1999 | US5934680 Split resin seal ring with chamfered end connection structures |
| 08/04/1999 | EP0842085B1 Variable extractor for ship and boat propellers |
| 08/03/1999 | US5932049 Method of making a partial arc bearing |
| 07/22/1999 | WO1999036312A2 Electrical drive mechanism for ships |
| 07/15/1999 | WO1999035030A1 Marine propeller shaft seal |
| 07/13/1999 | US5921828 Marine drive transmission |
| 07/13/1999 | US5921826 Angle gearing, especially for a marine outboard drive unit |
| 07/06/1999 | US5918503 Split housing transmission |
| 07/01/1999 | DE19756420A1 Drive unit for ship |
| 06/17/1999 | DE19757319C1 Fuel cell demonstration model |
| 06/15/1999 | US5911793 For attachment to an engine |
| 06/15/1999 | US5911607 Sealing assembly for propeller drive shaft |
| 06/02/1999 | CN2321710Y Gearbox |
| 06/02/1999 | CN2321709Y Gearbox for ship |
| 06/01/1999 | US5908284 Marine propeller with tube shape shock absorbing means |
| 05/25/1999 | US5906523 Intermediate marine bearing with itegrated alignment system |
| 05/19/1999 | CN2319322Y Steady gearing transmission gear for fishing boat |
| 05/12/1999 | EP0915010A2 Hydraulic installation for a ship |
| 05/12/1999 | CN1216600A Partial arc bearing assembly and method of making the same |
| 05/12/1999 | CN1216509A Grooved staved bearing assembly |
| 05/11/1999 | US5902160 For a watercraft |
| 04/22/1999 | WO1999019648A1 A seal apparatus |
| 04/21/1999 | CN2315044Y Two way friction synchronizer type gearbox for ship |
| 04/21/1999 | CN1043025C Semi-sumerisible propeller unit for vessel |
| 04/14/1999 | EP0909002A2 Modular electrical rotating machine with facilitated removal of the windings |
| 04/14/1999 | EP0907556A1 Pod-like ship propulsion system with synchronous motor |
| 04/14/1999 | EP0907554A1 Differential drive for a ship having two ship's screws |
| 04/14/1999 | EP0835206B1 Marine drive system |
| 04/06/1999 | US5890938 Marine counter-rotational propulsion system |
| 04/01/1999 | WO1999015400A1 A marine propeller, propeller system and components belonging thereto, and a method of connecting a propeller |
| 03/30/1999 | US5888108 Propulsion system for marine drive |
| 03/24/1999 | EP0903835A1 Axial flow pump/marine propeller |
| 03/17/1999 | EP0901449A1 Marine propulsion and steering unit |
| 03/09/1999 | US5879210 Power transfer device for inboard/outboard motor |
| 03/09/1999 | US5879207 Single engine dual propeller water craft |
| 03/03/1999 | EP0898548A1 Marine propulsion system |
| 03/03/1999 | EP0898544A2 Ship hull and vessel with such a hull |
| 02/25/1999 | WO1999008927A1 Intermediate marine shaft bearing with integrated alignment system |
| 02/25/1999 | DE19826229A1 Elektromotorische Antriebseinrichtung für ein Schiff Electromotive drive device for a ship |
| 02/18/1999 | DE19735514A1 Pedal powered raft accommodating bicycle |
| 02/17/1999 | CN2307734Y Automatic controller for diving electric pump |
| 02/10/1999 | CN2306951Y Water lubricating trailing axle sealing device |
| 02/04/1999 | WO1999005024A1 Electromotive gondola or ship drive system with cooling device |
| 02/04/1999 | WO1999005023A1 Electric motor pod drive system for a vessel with a cooling device |
| 02/04/1999 | DE19834736A1 Service ship propulsion system |
| 02/03/1999 | EP0894207A1 Partial arc bearing assembly and method of making the same |
| 02/03/1999 | EP0894067A1 Grooved staved bearing assembly |
| 01/28/1999 | DE19731423A1 Steering- and height-adjustable propeller drive for small boats |
| 01/28/1999 | DE19727801A1 Marine drive clutch system |
| 01/27/1999 | EP0789658B1 A control device for achieving optimum use of the energy which is produced by a vessel's main energy source |
| 01/26/1999 | US5863230 For rendering a watercraft propulsion system universal |
| 01/19/1999 | US5860745 Bearing assembly |
| 01/14/1999 | DE19731412C1 Drive for sea skimming marine vessel |
| 01/13/1999 | EP0770017B1 Floating seal for high rotational speed propeller shafts with integrated forced oil circulation generator and safety devices |
| 01/06/1999 | CN1203872A Tail shaft sleeve for ship |
| 12/30/1998 | WO1998058838A1 Vertically adjustable stern mounted marine drive |
| 12/29/1998 | US5853308 Engine and exhaust system for watercraft |
| 12/08/1998 | US5846103 Tractor pump jet |
| 11/24/1998 | US5839928 Shifting mechanism for outboard drive |
| 11/24/1998 | US5839926 Airboat systems and methods for increasing engine efficiency while reducing torque and noise |
| 11/18/1998 | EP0877705A1 Hub assembly for water jet propulsion unit |
| 11/11/1998 | EP0877173A1 Power transmission fibre-reinforced shaft |
| 11/03/1998 | US5829564 Marine drive shift mechanism with chamfered shift rings, stepped cams, and self-centering clutch |
| 10/29/1998 | WO1998047760A1 Composite material and a method for the production thereof |
| 10/29/1998 | DE19717175A1 Wasserstrahlantrieb für ein Wasserfahrzeug Water jet propulsion system for a watercraft |
| 10/28/1998 | CN2295677Y Gearing and controlling unit of boat engine |
| 10/14/1998 | EP0775017B1 Agitator |
| 10/13/1998 | US5820425 Outboard drive lower unit |
| 10/06/1998 | US5816870 For sailboats |
| 09/30/1998 | EP0867361A2 Nautical propulsor with ducted rotor propeller |
| 09/30/1998 | CN2292756Y Self-travelling ship |
| 09/29/1998 | US5813887 Marine propulsion system |
| 09/24/1998 | WO1998041447A1 Marine auxiliary power supply system |
| 09/24/1998 | DE19709755A1 Drive unit for ship |
| 09/15/1998 | US5807149 Airboat systems and methods for increasing engine efficiency while reducing torque and noise |
| 09/01/1998 | US5800222 Twin jet drive for watercraft |
| 08/18/1998 | US5795198 Floating seal for high rotational speed propeller shafts with integrated forced oil circulation generator and safety devices |
| 08/11/1998 | US5791954 Vertically adjustable stern mounted marine drive |
| 08/11/1998 | US5791951 Clutch controller for a twin propeller marine propulsion unit |
| 08/11/1998 | US5791950 Twin propeller marine propulsion unit |
| 08/04/1998 | US5788546 Shift assistor for marine transmission |
| 07/22/1998 | EP0853577A1 Ship drive with a driving engine and a directly driven propeller shaft |
| 07/21/1998 | US5782660 Watercraft propulsion system |
| 07/21/1998 | US5782659 Control for watercraft |
| 07/09/1998 | WO1998029302A1 Valve assembly and a method of operating a power transmission |
| 07/09/1998 | WO1998029301A1 Control system for a transmission and transmission fitted therewith |
| 07/08/1998 | EP0675822B1 Propeller drive system |
| 07/07/1998 | CA2139204C Variable propeller for boat |
| 07/01/1998 | EP0850374A1 Adjustable seal for propeller drive shaft |
| 06/24/1998 | EP0849480A2 Hollow shaft for the drive train of a ship |
| 06/16/1998 | US5766047 Twin propeller marine propulsion unit |
| 06/16/1998 | US5765499 Hydro-thrust canoe |
| 06/02/1998 | US5759074 Impeller mounting system for a personal watercraft |
| 05/28/1998 | DE19648417A1 Double-propeller drive for water vessel |
| 05/20/1998 | EP0842085A1 Variable extractor for ship and boat propellers |
| 05/14/1998 | WO1998019907A1 Dual propeller propulsion system for a water craft |