Brunswick Corporation

Wesley R Martin

David J Belter

Bernard E Ritger

Thomas J Steffes

Paul A Feyen

A coolant management system for a marine propulsion device provides a cavity within a driveshaft housing into which an oil reservoir is disposed. A water pump draws water from a body of water and causes it to flow through various coolant passages of the marine propulsion device. After passing through these coolant passages, the water is directed through a series of containments and compartments so that the level of water within the driveshaft housing varies in depth as a function of the operating speed of the internal combustion engine. This variance in depth causes a varying degree of cooling of the oil within the oil reservoir or sump.

Coolant management system for a marine propulsion device

An oil drain system for an outboard motor provides an oil drain opening formed in a lower surface of the splash plate of the outboard motor at a location which allows oil to drain from the oil drain opening under the force of gravity in a downward direction without contacting any surfaces of the outboard motor. This allows the oil to be received by a waste oil container that is placed at any point directly below the oil drain opening, either on the ground below the gearcase of the outboard motor or at any other point that is vertically below the oil drain opening.

Oil drain system for an outboard motor

A crankshaft rotation tool and method is provided to facilitate test and repair adjustments requiring precise indexing of rotational degrees of the crankshaft. The tool engages and imparts rotation to existing bolts mounting an existing pulley to the crankshaft.

Growing community of inventors

Fond du Lac, WI, United States of America

Wesley R Martin