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.
Claims16
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 single second shaft parallel or substantially parallel to the first shaft and 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;
- wherein
- the propeller shaft rotation driver includes a first shaft;
- and
- the pitch change driver includes a single second shaft parallel or substantially parallel to the first shaft and closer to a bow side of the marine vessel than the first shaft.
Dependencies are inferred from the claim text.