Abstract: A hull for a boat comprising a main hull bottom having a pair of hull bottom sides, each side having a first longitudinal inner edge and a second outer edge, with the hull bottom sides connected along the first inner edges and extending transversely upwardly and outwardly therefrom in a generally "V" shaped transverse cross section, each of the hull bottom sides having a main portion angled outwardly and upwardly from the first inner edge, and each of the hull bottom sides having a chine angled outwardly and downwardly from the main portion along a majority of the length of the second edge, a substantially vertical transom at the aft ends of the hull bottom sides, and a pair of raised after planing surfaces having forward ends at the transom and projecting aft of the transom and substantially parallel to and stepped slightly above the hull bottom sides immediately in front of the after planing surfaces, and the raised after planing surfaces also projecting aft generally parallel to and slightly above the chin

Abstract: The outboard motor comprises a propulsion unit including an engine, an adaptor fixedly connected between the engine and a lower unit including an outer drive shaft housing, a gear case fixedly connected to the drive shaft housing and including a water discharge passage having a discharge port adapted to communicate with the water in which the lower unit is submerged for operation and an inner housing inside the drive shaft housing and spaced therefrom to define a lower unit water jacket and also defining an exhaust gas expansion chamber communicating with the engine exhaust. The inner housing includes a duct having an upper end communicating with the lower unit water jacket and into which overflow water from the lower unit water jacket is discharged and also having a lower end communicating with the gear case water discharge passage.

Abstract: The outboard motor comprises a propulsion unit including an engine, an adaptor fixedly connected between the engine and a lower unit including an outer drive shaft housing, a gear case fixedly connected to the drive shaft housing and including a water discharge passage having a discharge port adapted to communicate with the water in which the lower unit is submerged for operation and an inner housing inside the drive shaft housing and spaced therefrom to define a lower unit water jacket and also defining an exhaust gas expansion chamber communicating with the engine exhaust. The inner housing includes a duct having an upper end communicating with the lower unit water jacket and into which overflow water from the lower unit water jacket is discharged and also having a lower end communicating with the gear case water disharge passage.

Abstract: A throttle and timing control for a spark ignition internal combustion engine having a fuel/air mixing device and a spark timing device. A first lever is mounted on a pivot on the engine and includes a shaped cam slot a portion of which has a substantially uniform radius about said pivot and a portion of which has specifically non-constant radii about said pivot. A manual control is connected to the lever to actuate the lever about the pivot. A second pivot on the engine has an axis perpendicular to the axis of the first pivot and journals a second lever which controls the timing of the spark ignition. A spherical cam follower on the second lever engages and rolls in the cam slot so as to follow motion of the cam slot while turning the plane of movement 90.degree.. A third pivot on the engine is spaced from the other pivots and journals a lever operably connected to the fuel/air metering device. A link interconnects the first and third lever.

Abstract: A marine propulsion device comprising a support bracket attached to a boat hull, a propulsion unit, a tilt pin connecting the propulsion unit and support bracket for tilting movement of the propulsion unit, and an extendable and retractable cylinder-piston assembly for facilitating manual tilting movement of the propulsion unit. The cylinder-piston assembly comprises a cylinder, a piston located in the cylinder for reciprocative movement therein, a piston rod connected to the piston and extendable from the cylinder, and lugs connecting the cylinder-piston assembly to the support bracket and the propulsion unit.

Abstract: A throttle and timing control for a spark ignition internal combustion engine having a fuel/air mixing device and a spark timing device. The control includes a pivot on the engine, a first lever mounted on said pivot and including a shaped cam slot a portion of which has a substantially uniform radius about the pivot. A control is connected to the lever to actuate the lever about the pivot. A second pivot on said engine spaced from but substantially parallel to the first pivot supports a second lever which has a cam follower engaged with the cam slot. A motion take-off connection on the second lever is spaced further from the second pivot than the follower so the motion imparted to the follower by movement of the cam plate is multiplied at the motion take-off point. A third pivot on the engine spaced from the first two pivots supports a third lever which is operatively connected to the timing control device. A link interconnects the first pivot and the fourth lever which is part of the throttle control.

Abstract: A sensor (43) responds to the operation of a marine transportation system to sense on-plane and off-plane conditions of a boat (21) to operate a trim control (44) to automatically position a trimmable drive (25) for a desired boating operation. The preferred embodiment senses engine speed while an alternative embodiment senses fluid pressure opposing boat movement. The drive (25) is moved to an auto-out position (34) at high speeds and to a trimmed-in position (33) at lower speeds.

Abstract: A throttle and timing control for a spark ignition internal combustion engine having a fuel/air mixing device and a spark timing device. The control includes a pivot on the engine, a first lever mounted on said pivot and including a shaped cam slot a portion of which has a substantially uniform radius about the pivot. A control is connected to the lever to actuate the lever about the pivot. A second pivot on said engine spaced from but substantially parallel to the first pivot supports a second lever which has a cam follower engaged with the cam slot. A motion take-off connection on the second lever is spaced further from the second pivot than the follower so the motion imparted to the follower by movement of the cam plate is multiplied at the motion take-off point. A third pivot on the engine spaced from the first two pivots supports a third lever which is operatively connected to the timing control device. A link interconnects the first pivot and the fourth lever which is part of the throttle control.