Inversion protection of outboard marine engines
AssigneeRNLI (Trading) Limited
InventorsMichael B. J. Brinton, John Barnes, Peter D. Chandler
Life of this patent
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Abstract
Inversion-protection of an outboard marine engine is achieved by fitting inside the engine casing watertight boxes to enclose the water-sensitive electrical components, i.e. the engine starter solenoid and the power pack. The starter motor spindle is provided with a shaft seal and the engine exhaust is fitted with an exhaust pipe in the form of a vertical hairpin or U-tube. The engine air intake box has fitted inside it a horizontally sliding valve that is automatically closed by a vertically-sliding weighted wedge engaging the valve rod.
Claims10
A method of inversion-protecting an outboard marine engine having a starter motor, spindle, and solenoid and engine power pack including a coil and terminal blocks located in a main engine casing, wherein all of the water-sensitive electrical equipment within the main engine casing is enclosed in one or more watertight boxes fitted inside the casing, the casing itself being open to ingress of water and protecting all other water sensitive engine regions from ingress of water upon inversion of the engine.
An outboard marine engine having an engine, a main engine casing open to water and having located therein a starter motor with a spindle, a starter motor solenoid, an engine power pack including a coil and terminal blocks wherein the engine has an air intake, an exhaust housing, a carburetor with balancing holes characterized in that there is provided,
- at least one water tight compartment for the starter motor, starter motor solenoid, an engine power pack including a coil and terminal blocks, and
- a gravity operated valve means for sealing said exhaust part when said engine is inverted.
Dependencies are inferred from the claim text.