초록 ▼

A marine propulsion system for isolating engine sound and vibration from the boat interior includes an engine mounted in the aft portion of the boat by resilient mounts. The engine is enclosed within a closed compartment for isolating engine sound, with one wall of the compartment defined by the boa

A marine propulsion system for isolating engine sound and vibration from the boat interior includes an engine mounted in the aft portion of the boat by resilient mounts. The engine is enclosed within a closed compartment for isolating engine sound, with one wall of the compartment defined by the boat transom. The resilient engine mounts isolate the boat from the effects of engine vibration. A drive unit is rigidly mounted to the exterior of the boat transom. A drive mechanism is provided for transferring power from the engine crankshaft to the drive unit, and includes an apparatus for accommodating engine movements and isolating the drive unit from the effect of such movements.

대표청구항 ▼

A marine propulsion system for use in a boat, comprising: an engine adapted for mounting in the aft portion of the boat adjacent to transom, said engine being mounted within said boat by resilient mounting means for isolating said boat from engine vibrations, said engine including a rotatable cranks

A marine propulsion system for use in a boat, comprising: an engine adapted for mounting in the aft portion of the boat adjacent to transom, said engine being mounted within said boat by resilient mounting means for isolating said boat from engine vibrations, said engine including a rotatable crankshaft; a drive unit adapted for mounting to the transom of the boat, said drive unit including a propeller interconnected with power transfer means; drive means for drivingly interconnecting said engine crankshaft with said power transfer means, said drive means comprising a first rotatable member interconnected with said engine crankshaft and rotatable in response to rotation thereof, and a second rotatable member interconnected with said drive unit for inputting rotary power thereto, said first and second rotatable members being substantially fixed in position relative to each other and engageable with each other for transferring rotary power from said first rotatable member to said second rotatable member; means associated with said drive means for accommodating movement of said engine crankshaft resulting from engine vibrations for isolating said drive unit from the effect of engine vibrations, said movement accommodating means comprising a drive shaft interconnected with said engine crankshaft through a first flexible joint, said drive shaft being interconnected with said first rotatable member through a second flexible joint, said first and second flexible joints acting to isolate said first rotatable member from movement of said engine crankshaft resulting from engine vibration; wherein said drive unit is rigidly mounted to the exterior of the transom of the boat, and wherein said means for accommodating movement of said engine crankshaft is associated with said drive means; and wherein said power transfer means includes a rotatable shaft disposed in the upper end of said drive unit defining a pivot axis about which said drive unit is pivotable, said drive unit rotatable shaft being interconnected with said second rotatable member for inputting rotary power to said drive unit.