Marine propulsion inventions 12/05

20050287880 - Power source device for boat: To maintain stabilized operation of a boat engine, a propulsion device may be provided with two separate batteries for different uses in case one of the batteries suffers a voltage drop. A power source device is provided with a propulsion battery for supplying power to engine-related components of an outboard...

20050287881 - Combined propulsion device and fishing shelter: A fishing shelter combined with a propulsion device including an engine driven track drive supported on a frame. In one embodiment the frame is pivoted to be articulated with respect to a base-hull either at the front or rear thereof to enable towing or pushing transport of the fishing shelter....

20050287882 - Z-drive for a watercraft: The invention relates t a Z-drive for a watercraft, said drive comprising an upper part, a lower part and a propeller. At least the propeller can be moved by means of a clutch housing, a cardan housing, and a trim cylinder. An intermediate part is arranged between the clutch housing...

20050287883 - Power generating and propelling system of vessel: A power generating and propelling system of a vessel has an electric power generating device (10) installed between an internal combustion engine (2) and a transmission (3). A stator (11) of the generating device (10) is built in a flywheel housing (21a) of the internal combustion engine (2) or a...

20050287884 - 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 and for rotating said propulsion unit about a steering axis between a center position and hard over positions to each side of the center position, the propulsion unit being supported...

20050287885 - Outboard motor: In an outboard motor, an extension case (member constituting a frame of the outboard motor) has the natural frequency (resonance frequency) of higher than the vibration frequency produced when the engine operates at maximum speed. Since this configuration prevents the extension case from resonating during operation of the outboard motor,...

20050287886 - Engine output control system for water jet propulsion boat: A jet-propelled watercraft can include an engine output control system that adjusts the output of the engine based on a steering force and the engine speed. The control system can also be configured to detect abnormalities in the steering force sensor and to prohibit the increase engine output control when...

20050287887 - Outboard motor air intake system: In an outboard motor air intake system, there are equipped with a secondary air passage connected to an air intake pipe at a location downstream of the throttle valve in terms of intake air flow; a manual valve installed in the secondary air passage to be operable by the operator...

20050282447 - 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 shaft in any directions including a fore...

20050282448 - 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 hydraulic fluid supply mechanism is incorporated into the outboard motor...

20050277342 - Amphibious vehicle: An amphibious vehicle has a power train including an engine having an oil sump connected to a lower portion of the engine an in-line transmission and a power take off. The power take off is located between the engine and the transmission thereby separating the engine and the transmission, is...

20050277343 - Outboard motor: An outboard motor is provided with a four-stroke-cycle engine and an oil pan disposed below the engine. In the arrangement of the oil pan, a lubricating oil reservoir is arranged on a front side of the oil pan, and an exhaust gas passage and a cooling water passage are arranged...

20050272320 - Propulsion unit for boat: A propulsion unit can comprise a propeller and an internal combustion engine for driving the propeller. The propulsion unit can include a gear switching device for changing a drive mode of the propulsion unit between a forward drive mode, a reverse drive mode and a neutral mode. A throttle valve...

20050272321 - Boat hull with outboard drive and outboard drive for boats: Boat hull with outboard drive unit, the drive unit (5) including an underwater housing (6) mounted on the outside of the hull bottom (1) and a gear housing (11) mounted on the inside of the hull bottom and joined to the underwater housing. Between the underwater housing and the gear...

20050272322 - Outboard motor steering angle and tilt/trim angle regulating system: An outboard motor steering angle and tilt/trim angle regulating system includes a pair of hydraulic cylinders each connected, at one end, to the boat through the stern brackets and connected, at the other end, to the outboard motor at a location upward of the one end in a vertical direction,...

20050272323 - Slider: This invention relates to a slider, which comprises a polyethylene foam skin, a laminated plastic film and a plastic sheet. The polyethylene foam skin has a density in a range of 1.5 to 12 PCF and a thickness in a range of 1 to 6 mm. The laminated plastic film...

20050272324 - Amphibious vehicle cooling systems: Planing amphibious vehicle (101) comprises engine (105) with internal cooling ducts (106). The engine is cooled first by air-water exchanger (102), and secondly by water-water exchanger (108). One or both exchangers may be located in compartment (119), separated from engine compartment (117) fully by bulkhead (80) (FIG. 4), or partially...

20050272325 - Cycloidal propeller: A cycloidal propeller for a boat is provided that has a protective guard with one or more slots therethrough, which run at least approximately perpendicular to the direction of travel of the boat....

20050266742 - Steering handle for outboard motor: A steering handle assembly for an outboard motor has a low speed control switch with at least one lead wire that is not twisted during control of the watercraft. The low speed control switch provides precise control of the engine speed of the outboard motor. The steering handle assembly has...

20050266743 - Watercraft: An watercraft can include a steering unit including a steering member and a steering shaft, a propulsion system, a power output control mechanism for controlling the power output o the engine, a manually operated power output adjusting means for adjusting the power output control mechanism, the power output adjusting means...

20050266744 - Personal watercraft engine fluid cooling system: An engine fluid cooling system that utilizes the jet propulsion unit of a personal watercraft to cool the engine fluid. The cooling system includes passages for transporting engine fluid to and from a cooling system that includes a cooling channel formed about a component of the jet propulsion unit so...