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US 12,304,606 B2Granted
Outboard motor and marine vessel
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorsTakuma Matsunaga, Tomohiro Hagi
Life of this patent
Estimating the term…
Abstract
An outboard motor includes an outboard motor body, a steering shaft, a steering cylinder including a piston rod extending in a right-left direction of the outboard motor body, a piston fixed to the piston rod, and a cylinder body including an oil chamber and the piston therein, and an oil passage inside the piston rod and connected to the oil chamber. The steering cylinder is operable to rotate the steering shaft and the outboard motor body in the right-left direction by adjusting an amount of oil in the oil chamber and moving the cylinder body in the right-left direction.
Claims20
An outboard motor comprising:
- an outboard motor body;
- a steering shaft;
- a steering cylinder including:
- a piston rod extending in a right-left direction of the outboard motor body;
- a piston fixed to the piston rod;
- and
- a cylinder body including an oil chamber and the piston therein;
- an oil passage inside the piston rod and connected to the oil chamber;
- a swivel bracket attached to the outboard motor body and rotatable in an upward-downward direction;
- and
- a clamp bracket fixable to a hull and attached to the swivel bracket such that the swivel bracket is rotatable in the upward-downward direction;
- wherein
- the steering cylinder is operable to rotate the steering shaft and the outboard motor body in the right-left direction by adjusting an amount of oil in the oil chamber and moving the cylinder body in the right-left direction;
- and
- the steering cylinder is rotatably attached to the clamp bracket.
12 more elements
An outboard motor comprising:
- an outboard motor body;
- a steering shaft;
- a steering cylinder including:
- a piston rod extending in a right-left direction of the outboard motor body;
- a piston fixed to the piston rod;
- and
- a cylinder body including an oil chamber and the piston therein;
- and
- an oil passage inside the piston rod and connected to the oil chamber;
- wherein
- the steering cylinder is operable to rotate the steering shaft and the outboard motor body in the right-left direction by adjusting an amount of oil in the oil chamber and moving the cylinder body in the right-left direction;
- the oil chamber includes a left oil chamber on a left side of the piston and a right oil chamber on a right side of the piston;
- the oil passage includes a left oil passage connected to the left oil chamber, and a right oil passage connected to the right oil chamber;
- and
- oil is supplied from a vicinity of a same outer end of the piston rod to the left oil passage and the right oil passage, and oil is discharged from the left oil passage and the right oil passage to the vicinity of the same outer end of the piston rod.
12 more elements
A marine vessel comprising:
- a hull including a steering wheel;
- and
- an outboard motor attached to the hull;
- wherein
- the outboard motor includes:
- an outboard motor body;
- a steering shaft;
- a steering cylinder including:
- a piston rod extending in a right-left direction of the outboard motor body;
- a piston fixed to the piston rod;
- and
- a cylinder body including an oil chamber and the piston therein;
- an oil passage inside the piston rod and connected to the oil chamber;
- a swivel bracket attached to the outboard motor body and rotatable in an upward-downward direction;
- and
- a clamp bracket fixed to the hull and attached to the swivel bracket such that the swivel bracket is rotatable in the upward-downward direction;
- wherein
- the steering cylinder is operable to rotate the steering shaft and the outboard motor body in the right-left direction by adjusting an amount of oil in the oil chamber and moving the cylinder body in the right-left direction based on an operation of the steering wheel;
- and
- the steering cylinder is rotatably attached to the clamp bracket.
17 more elements
A marine vessel comprising:
- a hull including a steering wheel;
- and
- an outboard motor attached to the hull;
- wherein
- the outboard motor includes:
- an outboard motor body;
- a steering shaft;
- a steering cylinder including:
- a piston rod extending in a right-left direction of the outboard motor body;
- a piston fixed to the piston rod;
- and
- a cylinder body including an oil chamber and the piston therein;
- and
- an oil passage inside the piston rod and connected to the oil chamber;
- wherein
- the steering cylinder is operable to rotate the steering shaft and the outboard motor body in the right-left direction by adjusting an amount of oil in the oil chamber and moving the cylinder body in the right-left direction based on an operation of the steering wheel;
- the oil chamber includes a left oil chamber on a left side of the piston and a right oil chamber on a right side of the piston;
- the oil passage includes a left oil passage connected to the left oil chamber, and a right oil passage connected to the right oil chamber;
- and
- oil is supplied from a vicinity of a same outer end of the piston rod to the left oil passage and the right oil passage, and oil is discharged from the left oil passage and the right oil passage to the vicinity of the same outer end of the piston rod.
17 more elements
Dependencies are inferred from the claim text.