Marine propulsion inventions 03/08

20080070455 - Boat hull structure: A boat hull comprises a hull body having two lateral flanks linked by a bottom surface, and at least two propulsion compartments provided in two bulges protruding below the bottom surface of the hull body. Each propulsion compartment lodges a propulsion engine located below the bottom surface of the hull... Agent: David I. Roche Baker & Mckenzie LLP

20080064273 - Watercraft propulsion system and operating method: A watercraft propulsion system has a control lever for giving instructions regarding operating mode and output power from a source of driving force. A controller sets a propeller driving mode according to instructions given from the control lever. In an embodiment, an electric motor and an engine are included in... Agent: Knobbe Martens Olson & Bear LLP

20080064274 - Boat propeller: A boat propeller system, consisting of propeller blades attached to the forwardmost portion of a cylindrical housing extending aftward from the propeller blades for increasing the propulsion of the propeller system.... Agent: Brentnall Jesse Higgs

20080064275 - Propeller for a marine propulsion system: A marine propulsion system comprising a push rod activated pins (170) which engage eccentric shaft (174) for unlocking a propeller base (190) so the base (190) can rotate around a transverse axis. The base (190) has an inclined surface (192) which engages with an inclined surface (159) defining an opening... Agent: Bromberg & Sunstein LLP

20080064276 - Cooling system for a marine propulsion device: A cooling system for a marine vessel is configured to allow all cooling water to flow out of the cooling circuit naturally and under the influence of gravity when the marine vessel is removed from the body of water. All conduits of the cooling circuit are sloped downwardly and rearwardly... Agent: William D. Lanyi

20080057803 - Personal watercraft: In a personal watercraft equipped with a multi-cylinder engine including an exhaust collecting system configured to discharge an exhaust gas from the engine, the exhaust collecting system comprising a plurality of exhaust passages respectively corresponding to a plurality of cylinders provided in the multi-cylinder engine, an exhaust collecting passage which... Agent: Alleman Hall Mccoy Russell & Tuttle LLP

20080057802 - Buoyant safety paddle and method of manufacture thereof: A buoyant safety paddle (11) for a kayak, a canoe or other small boat facilitates kayak deep-water self-rescue reentries and facilitates the movement of small boats over aqueous surfaces. Such buoyant paddle displaces significant volume while minimizing weight eliminating the need for post-capsize attached flotation. Each such buoyant paddle's volume... Agent: Lyle Wilkinson