Outboard Marine Corporation

Michael C Anselm

James S Nerstrom

Clarence E Blanchard

Edward K Lam

Disclosed herein is a one piece drive shaft housing comprising a casting including an outer surface having an upper end surface, a lower end surface, and an endless side surface extending between the upper and lower end surfaces, an internal cavity extending between the upper and lower end surfaces and adapted to receive a drive shaft and a clutch operated linkage, an internal exhaust gas passage extending between the upper and lower end surfaces and located in spaced relation to the cavity, an internal coolant supply passage extending between the upper and lower end surfaces, an internal idle exhaust passage including a series of expansion chambers and extending between the upper end surface and the endless side surface, and an internal coolant drainage passage extending between the upper and lower end surfaces in heat exchanging relation to the exhaust gas passage.

Outboard motor exhaust housing and lost foam pattern therefor

Disclosed herein is an air silencer comprising a main body including a first member including a first wall partially defining a first plenum area, a second wall partially defining a second plenum area, and a third wall connecting the first and second walls, a second member including a first wall which partially defines a plenum area cooperating with the first plenum area of the first member to define a first plenum chamber, a second wall which partially defines a plenum area cooperating with the second plenum area of the first member to define a second plenum chamber, and a third wall which connects the first and second walls of the second member and is located in spaced relation to the third wall of the first member to define therebetween a narrow passage between the first and second plenum chambers.

Engine incoming air silencer and mounting arrangement therefore

Disclosed herein is an outboard motor including a fore and aft center plane and comprising a powerhead assembly including a two stroke internal combustion engine including a cylinder block including a port side, a starboard side, a plurality of vertically aligned cylinders in a single bank, which cylinders each include an axis extending at an angle to said center plane and to one of said port and starboard sides, and an exhaust port on the other of said port and starboard sides, and an exhaust gas passage including a main portion extending vertically adjacent said center plane, and a like plurality of elbow portions connecting said exhaust ports to said main portion, which elbow portions include any one change in direction.

Outboard motor power head assembly

A marine propulsion device for use with a boat including a transom. The device comprises a transom bracket adapted to be fixedly connected to the transom, a swivel bracket pivotally connected to the transom bracket for vertical swinging movement about a horizontal tilt axis, and a kingpin having upper and lower ends fixed to the swivel bracket and a central portion intermediate the ends. The device also includes a propulsion unit including a powerhead, a driveshaft housing including an upper surface fixedly connected to the powerhead, a lower surface, and a vertical bore receiving the central portion of the kingpin to facilitate horizontal swinging movement on the driveshaft housing relative to the swivel bracket. The propulsion unit also includes a gearcase fixedly connected to the lower surface of the driveshaft housing, and a propeller rotatably carried by the gearcase.

Growing community of inventors

Fort Myers, FL, United States of America

Michael C Anselm