| Patents for B63H 23 - Transmitting power from propulsion power plant to propulsive elements (3,809) |
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| 05/01/1990 | US4921457 Marine propulsion device |
| 04/24/1990 | US4919009 Two turbine variable speed fluid coupling marine transmission |
| 04/17/1990 | US4917639 Device for supporting drive shaft of marine propulsion unit |
| 04/04/1990 | CN1041030A Seal for rotary shafts, especially for sterns tubes |
| 03/20/1990 | US4909767 Propulsion unit for inboard-outboard motor |
| 03/13/1990 | CA1266588A1 Anti-theft device for marine propellers |
| 02/21/1990 | CN1006876B Protective device for the stern tube seal of perpeller driven ship |
| 02/15/1990 | DE3827240A1 Damping and positioning arrangement for gearing |
| 02/15/1990 | DE3827103A1 Stuffing box for sealing off a shaft penetration against the passage of liquid |
| 02/13/1990 | US4900281 Marine drive with improved propeller mounting |
| 01/30/1990 | US4897058 Marine device with improved propeller shaft bearing carrier arrangement |
| 01/30/1990 | US4896412 Assembly tool for marine drive lower gearcase |
| 01/23/1990 | CA1264609A1 Stern tube bearing system of contra-rotating propeller |
| 12/19/1989 | US4887984 Marine transmission with fluid coupler |
| 12/07/1989 | DE3817660A1 Stern-tube sealing arrangement for propeller shafts of seagoing vessels |
| 11/16/1989 | DE3815655A1 Abdichtung fuer rotierende wellen, insbesondere stevenrohrabdichtung Seal for rotating shafts, especially steve tube sealing |
| 11/07/1989 | US4878864 Outboard thruster with direct drive hydraulic motor |
| 10/24/1989 | US4875430 Boat building method using modular propulsion system |
| 10/04/1989 | EP0335368A1 Pressure control system for stern tube seals |
| 10/03/1989 | US4871332 Naval propulsion plant with hydraulic transmission |
| 09/28/1989 | DE3808710A1 Marine propulsion |
| 09/27/1989 | CN1035876A Sealing structure for propeller shaft in ship |
| 09/21/1989 | DE3907494A1 Schiffsschrauben-antriebssystem Marine propeller drive system |
| 09/12/1989 | US4864709 Tools for pulling propellers and bearing carriers from outboard units |
| 09/08/1989 | WO1989008050A1 Marine drive lower unit with sequentially loaded multiple thrust bearings |
| 09/08/1989 | WO1989008044A1 Marine drive lower unit with thrust bearing rotation control |
| 09/05/1989 | US4863406 Marine propulsion device with two piece propeller shaft assembly including spring clip for releasably preventing relative movement between propeller shaft pieces |
| 08/30/1989 | CN1035141A Cathodic corrosion-preventing device for sternshaft tube of ship |
| 08/29/1989 | US4861295 Marine propulsion device with reversible shift apparatus |
| 08/29/1989 | US4861294 Shaft pressure ring and method for lubricating shaft log seals |
| 08/29/1989 | US4860615 Reversible transmission |
| 08/23/1989 | CN1034986A Sealing for shaft, particularly suitable for shaft seal assembly for shaft lute of ship |
| 08/16/1989 | CN2042820U Wet clutch for ship |
| 08/08/1989 | US4854903 Parallel thrust propulsion system |
| 08/08/1989 | US4854184 Support system for shaft |
| 07/27/1989 | WO1989006622A1 A device in boat motors for prevention of reversal of the rotary movements of the motor |
| 07/27/1989 | DE3800706A1 Bausatz fuer eine wellendichtung, insbesondere an einem stevenrohr eines schiffes Kit for a shaft seal, particularly on a steve tube of a ship |
| 07/25/1989 | US4850911 Power transmission device for inboard/outboard system |
| 07/25/1989 | US4850907 Air motor systems for small boats |
| 07/25/1989 | US4850800 Device for blocking rotation of marine propellers |
| 07/18/1989 | US4848775 Liquid seal for marine stern drive gear shift shafts |
| 07/04/1989 | US4843914 Shift assisting device for marine propulsion unit |
| 07/04/1989 | CA1256745A1 Marine propulsion device with floating drive shaft |
| 06/27/1989 | US4842483 Propeller and coupling member |
| 06/22/1989 | DE3742079A1 Anordnung zum abdichten einer propellerwelle eines schiffes Arrangement for sealing a propeller shaft of a ship |
| 06/20/1989 | CA1256150A1 Bearing assembly |
| 06/15/1989 | DE3740679A1 Vorrichtung zum kathodischen korrosionsschutz eines bauteils an einem stevenrohr eines schiffes Apparatus for cathodic corrosion protection of a component to a steve tube of a ship |
| 06/13/1989 | US4838105 Reversing gear assembly for yachts |
| 06/07/1989 | CN2038891U Outboard propulsion system with self-rotating oars and helm |
| 05/30/1989 | CA1254799A1 Multi-bladed propeller and shaft assembly |
| 05/23/1989 | US4832638 Integral propulsion and steering unit |
| 05/23/1989 | US4832637 Marine engine driveshaft coupling |
| 05/23/1989 | US4832636 Marine drive lower unit with sequentially loaded multiple thrust bearings |
| 05/18/1989 | WO1989004275A1 Marine propulsion system using a pelton wheel turbine associated with a motor and a hydraulic pump |
| 05/17/1989 | EP0316219A1 Ship's propulsion system using an action turbine like a Pelton-type one connected to an engine and a hydraulic pump |
| 05/16/1989 | US4831297 Submersible electric propulsion motor with propeller integrated concentrically with motor rotor |
| 05/02/1989 | US4826458 Gear box with retained drive mechanism |
| 05/02/1989 | US4826404 Marine propeller and hub assembly |
| 04/20/1989 | WO1989003341A1 Improved retractable propulsor for boats |
| 04/18/1989 | US4822307 Warning device for a watercraft provided with a plurality of marine propulsion engines |
| 04/11/1989 | US4820211 Driveshaft supporting device for marine propulsion engine |
| 04/11/1989 | US4820210 Lower gearcase shift mechanism for marine propulsion device |
| 04/11/1989 | US4820209 Torque converter marine transmission with variable power output |
| 03/28/1989 | US4815996 Marine propulsion and control arrangement |
| 03/21/1989 | US4813898 Water jet propulsion |
| 03/07/1989 | CA1250878A1 Bearing assembly |
| 02/28/1989 | US4808835 Power generation cassette type power plant for marine electric propulsion and a controller thereof |
| 02/16/1989 | DE3726240A1 Hydrojet propulsion for water craft |
| 02/14/1989 | US4803896 Marine gear casing |
| 01/26/1989 | DE3800124A1 Seal for marine propeller shaft |
| 01/19/1989 | DE3721402A1 Hydrodynamic reversing gear |
| 01/17/1989 | US4798548 Marine propulsion device |
| 01/05/1989 | DE3721145A1 Lubricating system for the aft stern tube seal on screw-driven seagoing ships |
| 01/04/1989 | CN1030127A Safety device of seal construction for shaft particularly adapted for shaft-tube of ship's propulsion system |
| 01/04/1989 | CN1030058A Protective device for the stern tube seal of propeller driven ship |
| 01/03/1989 | US4795382 Marine drive lower unit with thrust bearing rotation control |
| 01/03/1989 | US4795273 Propeller shaft bearing arrangement |
| 12/27/1988 | US4793773 Marine propelling apparatus |
| 12/22/1988 | DE3718954A1 Propeller arrangement, in particular for ship propulsion plants |
| 12/21/1988 | EP0295569A1 Reversing mechanism for an outboard propulsion power leg |
| 12/20/1988 | US4792315 Drive shaft assembly for outboard motor |
| 12/15/1988 | DE3718419A1 Schutzvorrichtung fuer die stevenrohrabdichtung von propellerangetriebenen schiffen Ships guard for the steve pipe sealing of propeller-driven |
| 12/15/1988 | DE3718411A1 Sicherheitseinrichtung an einer abdichtungsanordnung fuer rotierende wellen, insbesondere fuer stevenrohre von schiffsantrieben Safety device on a sealing arrangement for rotating waves, especially for steve pipes of ship drives |
| 12/06/1988 | US4789366 Marine propulsion device ball clutch transmission |
| 12/06/1988 | CA1246004A1 Marine propulsion device including cathodic protection |
| 12/06/1988 | CA1245916A1 Marine propulsion device lower unit including propeller bearing member anode |
| 11/24/1988 | DE3715353A1 Shaft bearing with water lubrication |
| 11/22/1988 | US4786264 Stern tube bearing system of contra-rotating propeller |
| 11/10/1988 | DE3714674A1 Kit for a shaft seal, in particular the stuffing box of a ship's stern tube |
| 11/01/1988 | US4781144 Off-shore drilling installation evacuation system |
| 10/12/1988 | EP0285683A1 Ship's propulsion plant |
| 10/12/1988 | CN87102189A Energy-saving axle support for a double oar ship |
| 10/04/1988 | US4775342 Stern drive |
| 09/14/1988 | EP0281565A1 Line cutting device for mounting around a propeller shaft. |
| 08/30/1988 | US4767365 Shifting device for inboard-outboard drive |
| 08/30/1988 | US4767225 Thrust bearing holding structure for outboard motors |
| 08/23/1988 | US4765075 Water propulsion unit of water jet propulsion craft |
| 06/21/1988 | US4752256 Boat propulsion device |
| 06/14/1988 | US4750748 Shaft seal with flexible midportion and garter spring |
| 06/09/1988 | DE3634605A1 Stern tube-propeller shaft-bearing unit for ships |