Abstract: Marine apparatus comprising a boat including a wall extending generally in the fore and aft direction and having therein an air outlet opening, a propulsion unit mounted on the boat and including a propeller shaft, an engine drivingly connected to the propeller shaft, and a cover surrounding the engine and having therein an air inlet opening, and a duct communicating between the air outlet opening and the air inlet opening.

Abstract: A marine propulsion device comprising a power head having an engine, a lower unit which carries the engine, the lower unit including a rotatably mounted propeller and a drive shaft housed within the lower unit and operatively coupled to the engine and to the propeller, a swivel bracket adapted for mounting to a transom bracket for affording vertical tilting movement of the swivel bracket about a generally horizontal axis, the swivel bracket having a generally vertical bore, and a tubular pivot shaft connected to the lower unit and supported within the vertical bore for rotation about a generally vertical steering axis, and including therein a fluid passage adapted to communicate with a source of fluid to be cooled, and a water passage located adjacent the fluid passage and adapted to communicate with a flow of water to cool the fluid in the passage.

Abstract: Disclosed herein is a marine propulsion device for a boat hull having a transom, which device comprises a steering post having a longitudinal axis and adapted to be connected to the boat transom for rotation about the longitudinal axis, a propulsion assembly including a rotatably mounted propelling element, and linkage connecting the propulsion assembly and the steering post for common pivotal movement about the longitudinal axis and for movement of the propulsion assembly relative to the steering post between a running position and a second position elevated from the running position and against steering movement of the propulsion unit assembly relative to the steering post.

Abstract: Disclosed herein is a marine propulsion device for a boat hull having a transom, which device comprises a steering post having a longitudinal axis and adapted to be connected to the boat transom for rotation about the longitudinal axis, a propulsion assembly including a rotatably mounted propelling element, and linkage connecting the propulsion assembly and the steering post for common pivotal movement about the longitudinal axis and for movement of the propulsion assembly relative to the steering post between a running position and a second position elevated from the running position and against steering movement of the propulsion unit assembly relative to the steering post.

Abstract: Discussed herein is an outboard motor comprising a transom bracket adapted to be fixed to a boat transom, a stern bracket having an upper end and extending downwardly from the upper end and including a first mounting arrangement located below the upper end at a first distance and second mounting arrangement located below the upper end at a second distance greater than the first distance, a tilt pivot pivotally connecting the transom bracket and the upper end of the stern bracket for swinging movement about a horizontal axis of the stern bracket relative to the transom bracket, a swivel bracket having a generally upright leg including opposite ends, a second pivot connected to the swivel bracket adjacent one of the ends of the upright leg and to one of the first and second mounting arrangements for affording swinging movement about a horizontal axis of the swivel bracket relative to the stern bracket, a hydraulic cylinder connected to the swivel bracket adjacent the other of the ends of the upright leg and to

Abstract: Disclosed herein is a marine propulsion device comprising a transom bracket adapted to be mounted on the transom of a boat, a propulsion unit assembly including a rotatably mounted propelling element, and linkage connecting the propulsion unit assembly and the transom bracket for movement of the propulsion unit assembly relative to the transom bracket between a running position and a second elevated position spaced from the running position and against other material movement of the propulsion unit assembly relative to the transom bracket.

Abstract: Disclosed herein is a marine propulsion device comprising a power head adapted to be fixedly mounted to a boat hull and including an internal combustion engine having a crankshaft which extends fore and aft and horizontally when the power head is boat mounted, a power shaft extending below the crankshaft in parallel relation thereto, a belt and pulley drive operatively connected between the crankshaft and the power shaft for rotating the power shaft in response to rotation of the crankshaft, a lower unit connected to the power head and including a rotatably mounted drive shaft extending perpendicularly to the power shaft, which lower unit further includes a propeller shaft, and shafting and gearing for connecting the drive shaft and the propeller shaft, and a reversing transmission operably connected between the power shaft and the drive shaft for selectively driving the drive shaft in neutral, forward and reverse drive.

Abstract: Discussed herein is an outboard motor comprising a transom bracket adapted to be fixed to a boat transom, a stern bracket having an upper end and extending downwardly from the upper end and including a first mounting arrangement located below the upper end at a first distance and second mounting arrangement located below the upper end at a second distance greater than the first distance, a tilt pivot pivotally connecting the transom bracket and the upper end of the stern bracket for swinging movement about a horizontal axis of the stern bracket relative to the transom bracket, a swivel bracket having a generally upright leg including opposite ends, a second pivot connected to the swivel bracket adjacent one of the ends of the upright leg and to one of the first and second mounting arrangements for affording swinging movement about a horizontal axis of the swivel bracket relative to the stern bracket, a hydraulic cylinder connected to the swivel bracket adjacent the other of the ends of the upright leg and to

Abstract: Disclosed herein is an outboard motor comprising transom bracket adapted to be fixed to the transom of a boat, a propulsion unit supporting a thrust producing element, and a bracket assembly connecting the propulsion unit to the transom bracket so as to provide for pivotal steering movement of the propulsion unit relative to the transom bracket and for tilting of the propulsion unit relative to the transom bracket about a tilt axis located rearwardly of the transom, which bracket assembly connecting the propulsion unit to the transom bracket includes a steering arm connected to the propulsion unit and extending forwardly therefrom below the tilt axis and having a forward end terminating rearwardly of the transom.

Abstract: The overdrive transmission for a marine propulsion device includes a first drive gear mounted for common rotation with an input shaft connected to a power source, such as an internal combustion engine, a first driven gear mounted for common rotation with a drive shaft drivingly connected to a propeller shaft carrying a propeller, and one-way, overrunning clutch connecting the input and drive shafts. The first drive gear meshes with a second driven gear having fewer gear teeth than the first drive gear and mounted on a counter shaft for common rotation therewith. The first driven gear meshes with a second drive gear mounted on the counter shaft for rotation relative thereto. The counter shaft is selectively drivingly connected to the second drive gear to drive the drive shaft at a rotational speed higher than that of the input shaft.

Abstract: Disclosed herein is a marine propulsion device comprising a propeller shaft supported in a lower unit against axial movement and for rotary movement relative to the lower unit and including an axial bore extending from one end of the shaft, which bore defines an annular wall including first and second axially spaced series of circumferentially spaced cylindrical apertures communicating with the bore and having radially extending axes, respective balls in each of the apertures, first and second axially spaced facing bevel gears mounted in the lower unit co-axially with the propeller shaft for rotation relative to lower unit and propeller shaft and against axial movement relative to the lower unit and the propeller shaft, which first and second bevel gears include respective axial bores having therein respective first and second series of circumferentially spaced sockets opening radially inwardly and located in axial alignment with the first and second series of apertures in the propeller shaft, and an actuator

Abstract: Disclosed herein is a marine propulsion device comprising a power head including an internal combustion engine having a vertical crankshaft with a lower end having fixed thereon a bevel gear, a lower unit including a rotatably mounted propeller shaft carrying thereon a propeller, a horizontal cross shaft journaled in the lower unit and in the power head for pivotally connecting the lower unit to the power head for vertical tilting movement about a horizontal tilt axis, a transfer gear fixed to the cross shaft and in mesh with the bevel gear, a drive shaft extending in the lower unit and drivingly connected to the propeller shaft and to the cross shaft, a reversing transmission operably connected between the cross shaft and the drive shaft, a rudder pivotally mounted on the lower unit aft of the propeller, and mechanism on the lower unit for pivoting the rudder.

Abstract: Disclosed herein is a marine propulsion device comprising a power head adapted for mounting to a boat transom and including an engine having a crankshaft extending horizontally and parallel to the transom when the engine is boat mounted, a cross shaft mounted in parallel relation to the crankshaft and behind the transom when the engine is boat mounted, a pulley and belt drive operably connected between the crankshaft and the cross shaft for rotating the cross shaft in response to rotation of the crankshaft, a lower unit including an upper housing section mounted to the power head for tilting movement relative thereto about the axis of the cross shaft, a drive shaft extending in the upper housing section in perpendicular relation to the cross shaft, a reversing transmission operably connected between the cross shaft and the drive shaft, and a propeller mounted on the lower unit and drivingly connected to the drive shaft.

Abstract: Disclosed herein is a marine propulsion device comprising a bracket adapted to be fixed relative to the transom of a boat and including an opening extending generally horizontally when the bracket is boat mounted, a marine propulsion unit including a fixed assembly extending through the opening, fixed relative to the bracket, and including a power head located above the bracket and including an internal combustion engine, and an upper housing located below the bracket and fixed to the power head.

Abstract: Disclosed herein is a marine propulsion device comprising a bracket adapted to be fixed to a boat transom and having an upper portion and a lower portion, a propulsion leg including a rotatably mounted propeller, a first ball joint universally connecting the propulsion leg and the lower bracket portion, a hydraulic cylinder-piston assembly having first and second ends, a pivot connecting the first end of the hydraulic cylinder-piston assembly to the propulsion leg about an axis which is generally horizontal when the bracket is boat mounted, a second ball joint universally connecting the second end of the hydraulic cylinder-piston assembly to the upper bracket portion, and a drive train adapted to be connected to a prime mover, extending through the bracket and the propulsion leg, and drivingly connected to the propeller.

Abstract: Disclosed herein is a marine propulsion device comprising a transom bracket adapted to be fixed to a boat transom, a swivel bracket including a vertical leg having upper and lower ends, and a pair of arms extending upwardly in laterally spaced relation from the upper end of the swivel bracket vertical leg and including respective upper ends, a first pivot connecting the upper ends of the arms and the transom bracket for vertical swinging of the swivel bracket relative to the transom bracket about a first axis which is horizontal when the transom bracket is boat mounted, a propulsion unit including a powerhead and a lower unit fixedly connected to said powerhead and including, at the lower end thereof, a propeller, and a second pivot connecting the propulsion unit and the swivel bracket vertical leg for movement of the propulsion unit in common with the swivel bracket about the first axis and for steering movement of the propulsion unit relative to the swivel bracket about an axis which extends transversly to

Abstract: Disclosed herein is an outboard motor including a power head having an engine, a propulsion leg extending downwardly from the power head, an input shaft housed in the propulsion leg and driven by the engine, a drive shaft housed in the propulsion leg, a propeller shaft in the propulsion leg and drivingly connected to the drive shaft, and a propeller mounted on the propeller shaft. The outboard motor also includes a transmission for drivingly connecting the input shaft and the drive shaft, the transmission being housed in the propulsion leg above the propeller shaft and selectively and alternatively driving the drive shaft in forward and reverse directions and providing two forward speeds.

Abstract: Disclosed herein is a marine propulsion device including an input shaft drivingly connected to a power source, a lower unit having a rotatably mounted drive shaft extending in coaxial relation to the input shaft, a rotatably mounted propeller shaft carrying a propeller and drivingly connected to the propeller shaft, and a two-speed transmission drivingly connecting the input shaft to the drive shaft. The transmission includes a third shaft rotatably mounted in parallel relation to the input shaft and the drive shaft, a first pair of meshing gears including a first drive gear mounted on the input shaft and a first driven gear mounted on the third shaft, a second pair of meshing gears including a second drive gear mounted on the third shaft and a second driven gear mounted on the drive shaft, and a one-way overrunning clutch drivingly connecting one of the shafts to a gear mounted on the shaft when the rotational speed of the input shaft is less than a predetermined value.

Abstract: Disclosed herein is a marine propulsion device including an input shaft drivingly connected to a power source, a lower unit having a rotatably mounted drive shaft extending in coaxial relation to the input shaft, and a propeller shaft rotatably mounted in the lower unit, the propeller shaft carrying a propeller. A two-speed transmission is provided to drivingly connect the input shaft to the drive shaft, the transmission including a first drive arrangement between the input shaft and the drive shaft for selectively drivingly connecting the input shaft and the drive shaft, the first drive arrangement including a third shaft rotatably mounted in parrallel relation to the input shaft and the drive shaft, a drive gear, a driven gear mounted on the third shaft and in meshing engagement with the drive gear, and a one-way overrunning clutch drivingly connecting the input shaft and the drive shaft through the drive and driven gears when the rotational speed of the input shaft is less than a predetermined value.

Abstract: The invention provides an outboard motor including a shaft extending vertically under normal operating conditions and having a lower end, the shaft being supported by a boat hull. An electric motor is fixedly connected to the lower end of the vertical shaft and includes an output shaft. The output shaft is drivingly connected by a counter shaft gearing arrangement to a propeller shaft so as to drive a propeller supported thereon at a rotational speed less than the rotational speed of the output shaft of the electric motor. The counter shaft gearing arrangement includes a first drive gear driven by the electric motor output shaft, and a first driven gear driven by the first drive gear. A second drive gear is fixed to the first driven gear for rotation with the first driven gear about a counter shaft, and a second driven gear is carried by the propeller shaft and drives the propeller shaft, the second driven gear being in enmeshing engagement with the second drive gear and being driven by the second drive gear.