Propulsion device for marine vessel and outboard motor
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorsHiroki KOGA, Jun EBUCHI
Life of this patent
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Abstract
A propulsion device for a marine vessel includes a driving source including at least one electric motor, a propeller including blades with changeable pitches and rotatable around a central axis of a propeller shaft together with the propeller shaft, a propeller shaft rotation driver to transmit a driving force from the driving source to the propeller shaft and rotate the propeller shaft around the central axis, and a pitch change driver to transmit the driving force from the driving source to the blades and change pitches of the blades. The propeller shaft rotation driver includes a first shaft, and the pitch change driver includes a second shaft closer to a bow side of the marine vessel than the first shaft.
Claims18
A propulsion device for a marine vessel that propels the marine vessel, the propulsion device comprising:
- a driving source including at least one electric motor;
- a propeller including a plurality of blades with changeable pitches and rotatable around a central axis of a propeller shaft together with the propeller shaft;
- a propeller shaft rotation driver to transmit a driving force from the driving source to the propeller shaft and rotate the propeller shaft around the central axis;
- and
- a pitch change driver to transmit the driving force from the driving source to the plurality of blades and change the pitches of the plurality of blades;
- wherein
- the propeller shaft rotation driver includes a first shaft;
- and
- the pitch change driver includes a second shaft closer to a bow side of the marine vessel than the first shaft.
An outboard motor that propels a marine vessel, the outboard motor comprising:
- a driving source including at least one electric motor;
- a propeller including a plurality of blades with changeable pitches and rotatable around a central axis of a propeller shaft together with the propeller shaft;
- a propeller shaft rotation driver to transmit a driving force from the driving source to the propeller shaft and rotate the propeller shaft around the central axis;
- and
- a pitch change driver to transmit the driving force from the driving source to the plurality of blades and to change the pitches of the plurality of blades.
Dependencies are inferred from the claim text.