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| Number | Title | Issue Date |
| 8133084 | Propulsion device A propulsion device includes a propulsion device main body, an attachment mechanism, and a steering mechanism. The attachment mechanism is arranged to attach the propulsion device main body to a hull such that the propulsion device main body turns right and left wit... | 03/13/2012 |
| 8007330 | Steering apparatus with integrated steering actuator The present invention relates to a steering apparatus for a marine craft. The marine craft has a stern and a propulsion unit. The steering apparatus includes a stern bracket connectable to the stern of the marine craft. A swivel case is connected to the stern bracke... | 08/30/2011 |
| 7621790 | Marine propulsion control system and a vessel containing such a marine propulsion control system A marine propulsion control system for controlling a set of propulsion units carried by a hull of a vessel, said marine propulsion control system including an input command regulator for generating a desired delivered thrust by the propulsion units in the set of pro... | 11/24/2009 |
| 7527538 | Toe adjustment for small boat having multiple propulsion units A small boat has multiple propulsion units. A toe angle of the multiple propulsion units can be altered while the boat is under way. The toe angle can be adjusted to improve performance in any of a number of areas, including top speed, acceleration, fuel economy, an... | 05/05/2009 |
| 7465202 | Outboard motor steering control system An outboard motor steering control system is configured to have both an electric steering mechanism (having an electric motor, steering angle sensor and electronic controller such as microcomputer) and a hydraulic steering mechanism (having a hydraulic cylinder and ... | 12/16/2008 |
| 7413490 | Outboard motor steering system An outboard motor steering system includes a hydraulic fluid supply mechanism connected to the steering hydraulic cylinder to supply hydraulic fluid thereto disposed in a space formed between the stern brackets and the swivel case. In other words, since the hydrauli... | 08/19/2008 |
| 7364482 | Power steering systems for multiple steering actuators A hydraulic steering system comprises two hydraulic actuators, each having two actuator ports. There is a helm for steering the system in a first direction and a second direction. The helm is operatively connected to a helm pump. The helm is operatively connected to... | 04/29/2008 |
| 7354325 | Outboard motor control system In an outboard motor control system, a position of a clutch (moved by an actuator) is memorized as a neutral position when a neutral switch produces an ON signal and the clutch position corresponding to a forward position where the clutch engages with a forward gear... | 04/08/2008 |
| 7347753 | Hydraulic actuation system for a marine propulsion device A hydraulic system for a sterndrive marine propulsion device directs the flow of hydraulic fluid through the body and peripheral components of a gimbal ring in order to reduce the number and length of flexible hydraulic conduits necessary to conduct pressurized hydr... | 03/25/2008 |
| 7337739 | Steering-force detection device for steering handle of vehicle Steering-force detection sections, including a pressure-receiving section and a received-pressure detection section, are spaced from one another in the vicinity of a steering shaft. The steering shaft can include a pressing member for applying pressure to the pressu... | 03/04/2008 |
| 7331419 | Dual-circuit steer-by-wire steering system comprising a common cradle The invention relates to a steer-by-wire steering system comprising a hydraulic control unit that acts on the steerable wheels (1, 20), the control unit having at least one cradle (4, 23), which is displaceably mounted on at least one guide rod (5, ... | 02/19/2008 |
| 7325507 | Tiller operated marine steering system A tiller-based watercraft steering system is responsive to tiller release to lock a watercraft's steered element in the last commanded position upon tiller release. The system is locked by closing a valve assembly to prevent flow to opposed chamber of a hydraulic lo... | 02/05/2008 |
| 7320629 | Steering device for small watercraft In a steering device for a small watercraft that has at least two outboard motors which propulsive directions and propulsive forces are individually controllable. The steering device can have a steering wheel that can be inclined relative to an axis of a steering sh... | 01/22/2008 |
| 7318386 | Power assist steering apparatus and method responsive to volume flow of fluid An apparatus and method for providing power assisted steering for a marine craft having a manually operable steering pump and a hydraulic steering actuator. A powered hydraulic pump is hydraulically connected between the manually operable pump and the actuator. Hydr... | 01/15/2008 |
| 7311571 | Hydraulic steering device for a marine propulsion system A support device for a marine propulsion system, such as an outboard motor, provides a swivel bracket that is rotatable about a tilt axis relative to a transom bracket with a hydraulic cylinder formed as an integral part of the swivel bracket. A vertical plane in wh... | 12/25/2007 |
| 7267587 | Steering system of outboard motor A swivel bracket can be attached to a transom plate of a watercraft by means of a clamp bracket. A steering bracket can be rotationally provided in a swivel shaft of the swivel bracket. An outboard motor body can be secured to the steering bracket. An electric motor... | 09/11/2007 |
| 7255616 | Steering system for a marine propulsion device A steering system for a marine propulsion device eliminates the need for two support pins and provides a hydraulic cylinder with a protuberance and an opening which cooperate with each other to allow a hydraulic cylinder's system to be supported by a single pin for ... | 08/14/2007 |
| 7241194 | Outboard motor hydraulic mechanism An outboard motor hydraulic mechanism having a hydraulic actuator moving the outboard motor about a rotary shaft relative to a boat the motor is mounted on and a hydraulic pump and a plurality of electric motors connected to the pump. A number of the motors to be op... | 07/10/2007 |
| 7186155 | Power steering rate controller for a boat and method The invention provides a device and method for producing substantially kinematic steering of a boat whose yaw rate and direction is approximately proportional to the rate and direction that a steering device such as a steering wheel is being operated. The invention ... | 03/06/2007 |
| 7159525 | Hydraulic steering arrangement The invention concerns a hydraulic steering arrangement with a steering motor, a supply path between a pressure source and the steering motor, in which supply path a throttling device and a measuring motor are located, a return path between the steering motor and a ... | 01/09/2007 |
| 7156708 | Marine steering assembly with integrated pivot pin There is provided a hydraulic steering assembly for applying a force to a tiller of a marine, outboard propulsion unit. The steering assembly comprises a hydraulic steering actuator including a cylinder and an elongated piston rods. A pivot member is pivotally mount... | 01/02/2007 |
| 7150664 | Steering actuator for an outboard motor A steering actuator system for an outboard motor connects an actuator member to guide rails which are, in turn, attached to a motive member such as a hydraulic cylinder. The hydraulic cylinder moves along a first axis with the guide rail extending in a direction per... | 12/19/2006 |
| 7147525 | Hydraulic steering apparatus for an outboard engine A hydraulic steering apparatus 1 has a substantially bow-shaped frame 2, which includes a pair of end portions 2a bent forward. A piston rod 3 is supported by and between the end portions 2a. A hydraulic cylinder 5... | 12/12/2006 |
| 7134924 | Outboard motor steering system A steering system of an outboard motor is provided that is mounted on a stern of a boat and having an internal combustion engine at its upper portion and a propeller with a rudder at its lower portion that is powered by the engine to propel the boat. The steering sy... | 11/14/2006 |
| 7128626 | Marine steering assembly with connecting member There is provided a hydraulic steering assembly for applying a force to two or more marine propulsion units. Each propulsion unit has a steering axis and a tilt axis. The tilt axis is generally perpendicular to the steering axis thereof. Each propulsion unit is rota... | 10/31/2006 |
| 7128627 | Marine steering system having swivel bracket forming hydraulic cylinder A steering apparatus for a marine craft has a first bracket connectable to the stern of the marine craft. There is a second bracket connectable to the propulsion unit of the marine craft. The second bracket is rotatably connected to the first bracket for relative ro... | 10/31/2006 |
| 7090611 | Power transmission device Mutual interference between rotation and turning drive forces is prevented by a simple structure. A transmission shaft and a turning body are supported at a housing so as to be relatively coaxially rotatable. An input shaft is connected to the transmission shaft, an... | 08/15/2006 |
| 6902449 | Watercraft drive unit An improved drive unit for propelling a watercraft through shallow water comprising a steering box pivotally attached to the watercraft transom; a first drive shaft extending through the transom to the steering box; a second drive connected to said first drive shaft... | 06/07/2005 |
| 6820567 | Steering device A helm pump (10) rotated either in forward or reverse direction by operating a steering wheel (13) and discharges a liquid of a quantity proportional to the rotating angle, and a double action cylinder moves a rudder (27) and is provided on rudd... | 11/23/2004 |
| 6796856 | Steering system A steering system for amphibious vehicle includes a control connected to road steering means. Ram is conventionally used to assist road steering, but by disconnecting command valves, it becomes a hydraulic master cylinder, driving slave cylinder; and thus marine ste... | 09/28/2004 |
| 6790110 | Marine power steering system An improved and simplified marine power steering device that provides assist by selectively operating an electric motor driven hydraulic motor to provide the assist. This eliminates pumps that are constantly driven by the watercraft engine. Also the entire assist un... | 09/14/2004 |
| 6761599 | Marine steering system having swivel bracket forming hydraulic cylinder A steering apparatus for a marine craft has a first bracket connectable to the stern of the marine craft. There is a second bracket connectable to the propulsion unit of the marine craft. The second bracket is rotatably connected to the first bracket for relative ro... | 07/13/2004 |
| 6138596 | Damped steering mechanism for a watercraft A hydraulic damper is provided for a steering system, such as that of a boat or watercraft. A manually movable steering mechanism, such as a steering wheel, is connected to a piston and cylinder combination in such a way that rotation of the steering whee... | 10/31/2000 |
| 6113444 | Steering mechanism for an outboard motor A rotary actuator is used to steer a watercraft with an outboard motor. First and second brackets are attached to the outboard motor and the transom of the watercraft, respectively. The rotary actuator can be a hydraulic rotary actuator and either the rot... | 09/05/2000 |
| 5924379 | Actuating mechanism with improved mounting structure An actuating mechanism is provided with support members that extend away from the centerline of a cylinder bore, piston and actuator rod of an actuation mechanism that uses pressure to move the piston within a cylinder bore. Two support members are attach... | 07/20/1999 |
| 5722866 | Propulsion arrangement for a marine vessel A propulsion arrangement for a marine vessel having a propulsion unit. The propulsion unit includes a non-rotating housing in the form of a nozzle extending along a principal axis, the nozzle having an inlet opening, an outlet and an internal diameter; a ... | 03/03/1998 |
| 5605109 | Power steering system In a power steering system for a marine vehicle having a propulsion unit and an operator actuatable steering helm, a power steering assist apparatus including a hydraulic fluid cylinder-piston assembly and actuated in response to steering actuation at the... | 02/25/1997 |
| 5603279 | Power steering assist A power steering assist system, especially adaptable for a marine vehicle having a propulsion unit pivotal about a steering axis and including a steering member to effect steering movement thereof about the steering axis and an operator actuable steering ... | 02/18/1997 |
| 5205764 | Steering mechanism in a boat propulsion system A marine propulsion drive apparatus has an input drive shaft with a propeller shaft extending through the stern of the boat and a drive body extending substantially straight out the stern of the boat and having a propeller at the end thereof. Steering is ... | 04/27/1993 |
| 4976638 | Surface drive for marine craft having inboard engine An improved surface drive for a marine craft having an inboard engine in which propeller generated thrust forces are transferred directly and co-linearly from the propeller shaft, through a constant velocity U-joint to the engine or transmission shaft to ... | 12/11/1990 |
