Marine propulsion inventions 07/08

20080182463 - Commonly actuated trim and reverse system for a jet propulsion watercraft: A commonly actuated trim and reverse system for a jet propulsion watercraft is provided. The system includes a movable actuator connected to a movement transfer mechanism. The movement transfer mechanism is operable to adjust both the trim angle of the steering nozzle of the watercraft and the orientation of the... Agent: Baker & Hostetler LLP

20080182464 - Control device for plural propulsion units: A control device for plural propulsion units executes a control for synchronization of the engine rotational speed of a target propulsion unit with the engine rotational speed of a reference propulsion unit when one or more specified conditions are satisfied. Once synchronization control has been established, it is only cancelled... Agent: Knobbe Martens Olson & Bear LLP

20080182465 - Marine propulsion apparatus: A marine propulsion apparatus includes an anti-cavitation plate on a casing that supports a propeller. A lift generation plate, which generates lift during propulsion, is disposed at a position rearward of the casing and above the anti-cavitation plate and extends in a width direction of a hull. The lift generation... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20080182466 - Marine power train system and method of storing energy in a marine vehicle: A marine power system comprises a motor for providing propulsion. It also comprises an energy storage unit (ESU) for storing and supplying energy to the motor. A prime power system is connected to the ESU and motor for selectively providing energy to these subsystems through a bus. The motor selectively... Agent: Merchant & Gould PC

20080176463 - Boat control system with return to center steering command: A boat control system includes trim tabs mounted on the lower transom of a boat, with an electric trolling motor attached to each tab. A user control provides commands to control positioning of the trim tabs and operation of the motors. Steering with the motors is provided by controlling the... Agent: Kinney & Lange, P.a.

20080176464 - Amphibious vehicle: A sit-astride amphibious vehicle configuration which supports a high performance envelope both on land as well as in water. The vehicle has a planing hull and four retractable wheels. Handlebars provide for directional control in both modes of operation. Each road wheel is retractable by pivoting through at least 45°... Agent: Fulwider Patton LLP

20080176465 - Watercraft having low cavitation drive: A watercraft comprises a hull which is bouyant in water, and a propulsion system coupled to the hull for for propelling the hull in the water. The propulsion system comprises a propulsion disc and at least one drive input coupled to the propulsion disc. The propulsion disc is rotatable by... Agent: Heenan Blaikie LLP

20080171479 - Method of steering aquatic vessels: There is provided a boat (200) including a hull (20), and two engines (30, 50) couplable to rotationally drive mutually spaced separate corresponding propeller assemblies for providing thrusts. Directions of the thrusts are angularly adjustable (α1, α2) relative to the hull (20). A control unit (70) receives first and second... Agent: Volvo Technology Of America, Corporate Patents

20080171480 - Control system for propulsion unit: A propulsion unit control system is provided for a boat having plural propulsion units provided side by side and electrically connected in association with two adjacent operation levers. The control system synchronizes engine speeds of the respective propulsion units with each other based at least in part on the position... Agent: Knobbe Martens Olson & Bear LLP

20080166932 - Control device for plural propulsion units: A control device for propulsion units is adapted to synchronize the engine rotational speeds of a plurality of propulsion units arranged in a row on a vessel and operatively and electrically connected to two control levers that are positioned adjacent to each other. The control device synchronizes the engine rotational... Agent: Knobbe Martens Olson & Bear LLP

20080166933 - Propeller for a marine propulsion system: A propeller for a marine propulsion system is disclosed which comprises a propeller hub having a casing formed from three segments (16a, 16b, 16c), each of which has a part of an opening (28) for mounting a propeller blade (34). A locking and unlocking mechanism (51, 54, 95, 100) is... Agent: Bromberg & Sunstein LLP

20080166934 - Propulsion arrangement: The present invention relates to a propulsion arrangement for a marine vessel, which propulsion arrangement comprises an internal combustion engine, a shaft arrangement and a steerable thruster unit. The marine vessel further comprises an electric generator or a combined electric generator and motor in connection with the propulsion arrangement. In... Agent: Smith-hill And Bedell, P.C.

20080166935 - Exhaust system of outboard motor: An outboard motor includes a multi-cylinder engine which includes cylinders longitudinally oriented and vertically paralleled in a cylinder block, a cylinder head arranged at a rearward position of the cylinder blocks, and a crankcase arranged at a forward position of the cylinder block, the cylinder head having an outlet of... Agent: Barnes & Thornburg LLP

20080160845 - Propulsion unit control system: A propulsion unit control system is provided for a boat having plural propulsion units provided side by side and electrically connected in association with two adjacent operation levers. The control system synchronizes engine speeds of the respective propulsion units with each other in light of inputs to the two operation... Agent: Knobbe Martens Olson & Bear LLP

20080160846 - Propeller for watercraft, outboard motor and watercraft including the same and the method for producing the same: A propeller for watercraft having excellent abrasion resistance includes a propeller body having a blade and a hub portion, the propeller body being molded from an aluminum alloy by casting, and an anodic oxide coating of the aluminum alloy provided so as to cover a surface of the propeller body.... Agent: Yamaha Hatsudoki Kabushiki Kaisha C/o Keating & Bennett, LLP

20080160847 - Power damping mechanism for input shaft of auxiliary machine: A power damping mechanism for an input shaft of an auxiliary machine of an engine that is configured to be driven by the engine via a power transmission mechanism is provided. The power damping mechanism comprises a retainer plate that is fastened to the input shaft of the auxiliary machine... Agent: Alleman Hall Mccoy Russell & Tuttle LLP