Abstract: A planing boat having a stern and a bow includes a hull having a generally flat central bottom surface forming a portion of a pad with the surface tapering from a specified width at the stern towards the bow. Reverse wedge surfaces blended with the central bottom surface at the stern and deadrise surfaces blended with the central bottom surface and intersecting with the reverse wedge surfaces continue forward towards the bow. The rear portion of the flat bottom surface is tipped upwardly towards the stern.

Abstract: The apparatus provides for evacuation of the egg yoke and egg white from an egg through one hole in the egg shell. An egg with one hole in the egg shell is positioned on the apparatus. The one hole in the egg shell is positioned over a hollow tube which extends into the egg. The hollow tube aligns an egg collection opening in an egg seal with the egg collection passageway and supplies air at atmospheric pressure into the egg. When the interior of a bottle has a pressure below atmospheric pressure from a vacuum cleaner the egg yoke and egg white flow into the bottle. In a second embodiment, the apparatus provides for both evacuation and flushing of an egg.

Abstract: The apparatus includes a tube for inserting into an egg having one hole in the shell. The tube extends into the shell through the egg yoke and egg white until one end contacts the inside surface of the shell opposite the hole. The tube is connected to a squeeze bulb air supply. A chute is positioned below the hole around the tube. When the squeeze bulb is squeezed air is supplied to exit the one end inside the shell. The air causes the content of the egg yoke and egg white to flow out the hole around the tube into the chute. In the alternative embodiment the end of the tube is formed with an air relief to facilitate air flow into the shell when the end of the tube is in contact with the inside surface of the shell. The empty egg shell is then used for "Egg Art".

Abstract: The apparatus provides for evacuation of the egg yoke and egg white from an egg through one hole in the egg shell. An egg with one hole in the egg shell is positioned on the apparatus. The one hole in the egg shell is positioned over a hollow tube which extends into the egg. The hollow tube aligns an egg collection opening in an egg seal with the egg collection passageway and supplies air at atmospheric pressure into the egg. When the interior of a bottle has a pressure below atmospheric pressure from a vacuum cleaner the egg yoke and egg white flow into the bottle. In a second embodiment, the apparatus provides for both evacuation and flushing of an egg.

Abstract: A five cylinder two cycle outboard motor includes exhaust tuning of the five in-line cylinders. Exhaust tuning of five in-line cylinders provides increased horsepower for the five cylinder two cycle outboard motor. The five cylinder outboard motor which produces 150 horsepower achieves an ideal horsepower to number of cylinders and provides the proper horsepower size/weight size outboard motor for bass fishing and water skiing boats.

Abstract: A propulsion device for a boat that mounts through a hole in a bottom surface of the boat. The engine is positioned inside the boat and the propeller drive is positioned under a bottom surface of the boat. The propulsion device includes a mounting assembly, a steering assembly rotatably connecting the drive to the mounting assembly for steering the propeller drive under the boat, a trimming assembly swingingly connecting the drive to the steering assembly for trimming/tilting of the propeller drive under the boat at any steered position, and a drive shaft means providing a drive connection between the engine and the propeller drive at any steered and trimmed position.

Abstract: A marine drive which mounts through a hole in the bottom surface of a boat utilizes a driveshaft housing assembly, an engine mounted to the driveshaft assembly and a lower propeller drive unit mounted to the driveshaft housing assembly. The driveshaft housing assembly which mounts the drive within the hole in the boat includes a driveshaft housing, a steering assembly constructed to rotate about a generally vertical axis within said driveshaft housing assembly to provide steering, a trimming assembly connected to the steering assembly to pivotably swing the lower propeller drive unit to provide trimming/tilting, a driveshaft and an exhaust passageway therethrough.

Abstract: A propeller drive for a boat which provides independent steering and independent trimming/tilting mounts through a hole in a bottom surface of the boat. Steering of the propeller drive is provided by a steering assembly constructed to rotate about a generally vertical axis for connecting the drive up through the hole in the boat. Trimming of the propeller drive is provided by a trimming assembly which is pivotally connected to swing the propeller drive generally horizontally from the steering assembly.

Abstract: Marine drives having water cooled engines utilize a water pump mounted over the drive shaft and internal to the drive shaft housing to provide engine cooling, the pump having stamped metal housing parts and a flexible impeller.

Abstract: A marine propulsion apparatus includes an external combustion engine having a fuel pump connected by an electrically operated anti-syphon valve unit to a storage tank. The electrically operated anti-syphon valve unit includes a resiliently loaded valve means which is moved to open the valve unit either by an electrical operating means or by the normal pressure differential created by operation of the engine fuel pump.

Abstract: A vapor sensitive resistor, or switch, is connected in a bridge network having the input connected to the battery of a marine engine. A window signal comparator includes a high limit operational amplifier and a low limit operational amplifier, each have a first input connected to the opposite sides of a reference resistor in the bridge network to establish relatively high and low reference voltages and second inputs connected in common to the sensing resistor. The amplifiers include a positive feedback and two outputs are connected to an "OR" logic gate which is connected to drive a two-stage transistor amplifier wholly on or off. An alarm device is connected in series with the amplifier to the battery. A test switch varies the circuit connection of the vapor sensitive resistor to simulate a high or low limit condition and thereby test circuit operation.

Abstract: A solid state ignition system is provided for a two cycle internal combustion engine. A low speed limiter unit includes an electronic spark advance controller means connected to the ignition system to automatically advance the ignition angle by a substantial amount below a desired low limit speed. A speed sensing means is connected to sense the engine speed and at the selected minimum engine speed actuates the advance controller. The advance controller preferably has an asymmetrical rate of response, producing a relatively rapid advance output and a relatively slow retard output in response to changes in the speed sensing means.

Abstract: Detonation (knock) control apparatus for an internal combustion engine, such as an outboard motor, comprises a transducer for sensing detonation and for providing a signal when detonation occurs to an electronic controller which then operates an electrically controllable valve to enrich the fuel/air mixture to the engine to thereby reduce detonation. The electronic controller is fail-safe and is responsive to loss of signal from the sensing device and to electrical power supply failure to operate the valve to enrich the mixture.

Abstract: A heat exchanger is provided for a pressurized, closed cooling system for a marine propulsion engine. The heat exchanger includes a closed spiral passageway means for the fresh cooling water drawn from the lake or other water body. An outer housing encloses the spiral passageway and includes baffle means for directing of a coolant in a spiral path over the cooling passageway means within the housing. The coolant is thereby cooled by the circulating cold fresh water. An air discharge passageway means is provided in the center of the spiral path. The centrifugal forces associated with the spiral flow of the cooling coolant results in the water moving outwardly within the passageway while the air tends to collect within the center thereof where it is collected and discharged by the air passageway means for automatic separation and removal of the air.

Abstract: An engine flywheel forms the common rotor for a dual alternator unit having a first ignition alternator for the ignition circuit and a second power alternator for battery charging and providing other auxiliary power. The rotor includes first and second closely, axially spaced permanent annular magnets. An ignition and trigger coil assembly is aligned with one magnet and an auxiliary power coil with the second. The power magnet and coil include a substantial number of magnetic poles and coils to produce a significant power output. In a two cylinder engine, the ignition magnet has two radially and oppositely polarized poles. A pair of ignition capacitor charging coils are spaced by 180.degree. with a trigger coil mounted therebetween and circumferentially movable to adjust the timing. First and second ignition capacitors are connected to the charging coil and to the spark plugs and are alternately charged and discharged.

Abstract: A propeller having a specified combination of blade sweep, camber and rake which provides distinct operating advantages when utilized on pleasure boats; and further including weed cutting and protection features which make the prop particularly suitable for use on outboard motors and stern drives employing underwater exhaust through the lower gear case housing. Propeller blade rake and camber are adjusted as described to improve performance of light to moderately loaded, medium to high speed pleasure boats. The blades are swept aft and weed cutting blade-like fingers extend forwardly of the propeller blades to prevent weeds from accumulating forward of the prop and blocking the exhaust passageway.

Abstract: Vacuum, created by venturi effect of the throttle valve within the throat of a carburetor of a two cycle outboard motor, in company with a vacuum source orifice positioned opposite a peripheral edge of the throttle valve, is partially applied, by strategic placement of a vacuum source hole, to the fuel float chamber of the carburetor to reduce fuel flow over a selected range of engine RPM; normally when the boat it is driving is cruising on plane. A changeable vent to atmosphere is used to adjust the vacuum level to compensate for altitude changes and to adjust the carburetor to a particular motor. An expansion chamber in the vacuum source line may be required to prevent engine hesitation upon acceleration.