Marine propulsion device
AssigneeOutboard Marine Corporation
InventorsMartin J. Mondek, Lawrence E. Zdanowicz
Life of this patent
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Abstract
A marine propulsion device including a lower unit, a propeller shaft rotatably supported by the lower unit and to support a propeller, the shaft including a longitudinal axis and a surface defining a plane which is substantially normal to the axis, and a thrust washer for transmitting thrusting force from the propeller to the surface.
Claims10
A marine propulsion device comprising a lower unit, a propeller shaft rotatably supported by said lower unit and adapted to be driven by an engine and including a longitudinal axis, a forward, generally cylindrical surface, a rearward, generally cylindrical surface, and a shoulder surface which is intermediate said forward and rearward cylindrical surfaces and which is substantially normal to said axis, a propeller supported by said propeller shaft and including a hub having a forward transverse surface and a forwardly located inner cylindrical surface, and a thrust washer engaged between said forward transverse surface of said hub and said shoulder surface of said propeller shaft for transmitting thrusting force from said propeller to said propeller shaft, engaged between said inner cylindrical surface of said hub and said forward cylindrical surface of said propeller shaft for transmitting bending force from said propeller to said propeller shaft, and spaced from said rearward cylindrical surface of said propeller shaft to prevent transmission of bending force from said propeller to said propeller shaft through said second cylindrical surface.
A marine propulsion device comprising a lower unit, a propeller shaft rotatably supported by said lower unit and adapted to be driven by an engine and to support a propeller, said shaft including a longitudinal axis, a first generally cylindrical surface having a first diameter, a second generally cylindrical surface having a second diameter, and a transition surface located intermediate said first and second cylindrical surfaces, said transition surface defining a plane which is substantially normal to said axis, a propeller supported by said propeller shaft and including a hub and a propeller blade extending from said hub, and a thrust washer engaged between said transition surface and said hub of said propeller for transmitting thrusting force from the propeller to said transition surface, engaged with said first cylindrical surface for transmitting bending forces from the propeller to said first cylindrical surface, and clear of said second cylindrical surface of said propeller shaft for isolating said second cylindrical surface from bending forces from the propeller.
A marine propulsion device comprising a lower unit, a propeller shaft rotatably supported by said lower unit and adapted to be driven by an engine and including a longitudinal axis and a forward, generally cylindrical surface, a rearward, generally cylindrical surface and a shoulder surface which is intermediate said forward and rearward cylindrical surfaces and which is substantially normal to said axis, a propeller supported by said propeller shaft and including a hub having a forward transverse surface and a forwardly located inner cylindrical surface, and a thrust washer engaged between said forward transverse surface of said hub and said shoulder surface of said propeller shaft for transmitting thrusting force from said propeller to said propeller shaft, and engaged between said inner cylindrical surface of said hub and said forward cylindrical surface of said propeller shaft for transmitting bending force from said propeller to said propeller shaft, said thrust washer including therein a bore including a forward inner surface engaging said forward generally cylindrical surface, and a rearward inner surface surrounding said rearward generally cylindrical surface.
Dependencies are inferred from the claim text.