Outboard Marine Corporation

Heinrich E Luksch

Hrishikesh Choudhury

Richard M McChesney

Edward K Lam

Disclosed herein is a marine propulsion device comprising a lower unit including a gear case, a propeller shaft extending in the gear case, an annulus of greater dimension than the propeller shaft and of material weight, and a ring of elastomeric material resiliently connecting the annulus to the propeller shaft is co-axial relation thereto so as to provide for rotation of the annulus in common with rotation of the propeller shaft.

Dynamic damper on marine propeller or propeller shaft

A marine propulsion device comprising a lower unit including a rotatably mounted propeller, and an internal combustion engine drivingly connected to the propeller, the engine including an engine block, a crankshaft rotatably supported by the engine block and including a generally cylindrical main portion and a tapered end portion connected to the main portion and projecting from the engine block, a flywheel mounted on the tapered end portion of the crankshaft, and a bolt engaging the flywheel and the main portion of the crankshaft for securing the flywheel to the crankshaft.

Marine propulsion device including compressively secured flywheel

Disclosed herein is an engine cooling system comprising a first wall in an engine block defining a coolant jacket including an upstream coolant jacket portion, a downstream coolant jacket portion, and a passage portion extending therebetween and including therein a valve seat, a second wall in the engine block defining a void opening into the exterior surface of the block and communicating with the coolant jacket in general alignment with the passage portion, a third wall in the engine block defining a recess opening into the exterior surface of the block and communicating with the void, a valve member having a flange with opposed first and second surfaces, which first surface engages the seat, a spring having a first end engaging the second flange surface and having a second end, a plug located in the void and having a surface engaging the second spring end, and an outer surface, and, a retainer located in the recess and engaging the outer plug surface to releasably retain the retainer in the recess and to releasably retain the valve member against movement away from the seat.

Cooling system with removable valve member

A single lever control for the throttle and clutch of a marine propulsion device including a housing pivotally supporting both a main control lever and an auxiliary warm-up lever, a throttle lever, and a gear shift lever. The throttle lever is alternately operable to regulate the setting of a remotely located engine throttle in response to movement of either the main control lever from a neutral position or the warm-up lever from an idle position. The gear shift lever is operable to shift an engine clutch in response to initial movement of the main control lever from the neutral position. A lock-out lever mounted inside the housing cooperates with a lock-out plate carried by the warm-up lever and with a recessed, arcuate surface on the gear shift lever to prevent movement of warm-up lever when the main control lever is displaced from the neutral position and to prevent movement of the main control lever when the warm-up lever is displaced from the idle position. In one embodiment, the locking arm of a locking mechanism carried by the main control lever cooperates with a notched index plate mounted on the exterior of the housing and coaxially with the control lever pivot axis to releasably lock the main control lever in the neutral position. In another embodiment, the index plate and the control lever are arranged to afford selective adjustment of the angular orientation of the main control lever so it will be substantially vertical when in the neutral position irrespective of the angular orientation of the housing to the horizontal.

Growing community of inventors

Kenosha, WI, United States of America

Heinrich E Luksch