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Assignee: Yamaha Hatsudoki Kabushiki Kaisha


Location: Shizuoka, JP
No. of patents: 765

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NumberTitleIssue Date
8179285Marine vessel theft deterrent apparatus and marine vessel including the same
A theft deterrent apparatus in a marine vessel having a propulsion device includes a key unit arranged to transmit a user authentication code, a first authentication unit disposed apart from the propulsion device, a second authentication unit, and an operation contr...
05/15/2012
8177684Gear change control device and method
A gear change control device is provided for a straddle-type vehicle having a clutch and a transmission. The device includes a clutch actuator configured to engage and disengage the clutch. A transmission actuator is configured to change a gear of the transmission. ...
05/15/2012
8177593Outboard motor
An outboard motor includes an engine, an exhaust passage, an idle exhaust passage, a contraction portion and an expansion chamber, a bypass passage, and a check valve. The bypass passage includes an upstream end connected to the idle exhaust passage at a downstream ...
05/15/2012
8177015Motorcycle
The motorcycle is provided in an embodiment with a vehicle body frame, an engine, and an exhaust pipe connected to the engine. The vehicle body frame has a front frame supporting at least a part of the engine, a left rear frame connected to the front frame and exten...
05/15/2012
8177008All-terrain vehicle with improved power steering unit
A vehicle is provided with a front hood 33 that covers, from above, the front of the front panel 5, a battery 49 provided below the front hood 33, where at least the top of the battery is positioned above the top 3a of the f...
05/15/2012
8170735Marine vessel maneuvering supporting apparatus and marine vessel including the same
A marine vessel maneuvering supporting apparatus is used in a marine vessel which includes a propulsion system and a steering mechanism. The marine vessel maneuvering supporting apparatus includes a first operational unit arranged select a forward drive position for...
05/01/2012
8170734Marine vessel maneuvering supporting apparatus and marine vessel including the same
A marine vessel maneuvering supporting apparatus is used in a marine vessel which includes a propulsion system and a steering mechanism. The marine vessel maneuvering supporting apparatus includes an operational unit, operated by an operator, arranged to control mov...
05/01/2012
8167108Clutch, continuously variable transmission, engine unit including them, and straddle-type vehicle including them
A clutch includes a clutch inner and a clutch outer that houses the clutch inner and that transmits or interrupts torque between itself and the clutch inner. The clutch outer has a thick portion that has a larger thickness than the other portions of the clutch outer...
05/01/2012
8166927Outboard motor
An outboard motor that facilitates replacement of an impeller of a water pump includes a water pump arranged to pump coolant and a pump driving mechanism arranged to distribute power from a drive shaft to the water pump. At least a portion of the water pump in which...
05/01/2012
8164306Battery charge control device and marine vessel including the same
A battery charge control device for a marine vessel is arranged to control charging of a plurality of batteries, which include a main battery arranged to supply power for operating an engine of a propulsion device, and an accessory battery which is arranged to suppl...
04/24/2012
8162708Marine propulsion system
A marine propulsion system includes an engine, propellers arranged to be rotated by the engine, a transmission mechanism arranged to transmit a driving force of the engine to the propellers with a speed thereof shifted to at least a low speed reduction ratio and a h...
04/24/2012
8162706Watercraft steering system, and watercraft
A watercraft can have an electric motor mounted on a screw bar extending in a right/left direction. The electric motor can move along the screw bar in the right/left direction to steer an outboard motor, or another part of a different marine propulsion system. One o...
04/24/2012
8162705Water jet propulsion watercraft
A water jet propulsion watercraft includes, a main engine body, a rotor chamber provided at a rear portion of the main engine body, a crankshaft arranged such that a rear end portion of the crankshaft is disposed in the rotor chamber, the rear end portion having a f...
04/24/2012
8162703Marine vessel power supply system, marine vessel propulsion system, and marine vessel
A marine vessel power supply system supplies power to a plurality of propulsion devices each provided with an engine. The system includes a plurality of switching units arranged to turn on and off power supplies to the propulsion devices individually, an operation j...
04/24/2012
8162334Reinforcement device for vehicle
A reinforcement device for a vehicle is formed in a slender shape and comprises a medial region with a hydraulic damper. The damper generates a damping force against deformation in the longitudinal direction. The longitudinal direction is defined as a lateral direct...
04/24/2012
8161937Air intake device of engine
An air intake device of an engine includes a throttle body provided in an intake passage of an engine, a bypass passage arranged to connect an upstream side and a downstream side of a throttle valve disposed in the throttle body, an idle number-of-revolutions contro...
04/24/2012
8157694Outboard motor
In an outboard motor having a power transmission mechanism for transmitting power of an engine to a propeller, the power transmission mechanism has a transmission ratio changing unit having a planetary gear train including a sun gear, planetary gears, and an interna...
04/17/2012
8157038Saddle-ride type vehicle
Improved cooling capacity for a V-belt continuously variable transmission that is compatible with miniaturization of a vehicle body cover is provided in a saddle-ride type vehicle. A concave-shaped space recessed downward is compartmented forward of a seat by a vehi...
04/17/2012
8156914Balancer of engine, engine, and outboard motor
A balancer of an engine includes a rod and a balancer piston. A first end portion of the rod includes a joining portion which is arranged to be joined to a crankshaft of the engine at a position that is eccentric relative to a rotation axis of the crankshaft. A seco...
04/17/2012
8156882Marine vessel steering apparatus and marine vessel including the same
A marine vessel steering apparatus includes a rudder unit arranged to be mounted pivotally on a hull, an actuator arranged to turn the rudder unit, a rudder angle sensor arranged to detect the rudder angle of the rudder unit, a steering wheel arranged to be operated...
04/17/2012
8151926Friction clutch and vehicle equipped with the same
A friction plate (131) rotates in association with rotation of a pressure plate (77). A first pressing plate (132) presses the friction plate (131) to the right to move the pressure plate (77) to the right. A second pressing plate ...
04/10/2012
8151765Engine intake system
In an engine intake system, an air cleaner and downstream sides of throttle valves in throttle bodies provided in intake passages are connected by bypass passages. An idle speed control apparatus provided at a midpoint of the passage controls amounts of air supplied...
04/10/2012
8150569Marine vessel running controlling apparatus, and marine vessel including the same
A marine vessel running controlling apparatus is applicable to a marine vessel which includes a propulsive force generating unit arranged to generate a propulsive force to be applied to a hull of the marine vessel, and a steering unit arranged to turn the hull. The ...
04/03/2012
8147285Marine vessel propulsion unit
A marine vessel propulsion unit includes an engine, a drive shaft, a propeller shaft, a propeller, an intermediate shaft, and a first reduction gear mechanism. The drive shaft is arranged to be rotated by the engine. The rotation of the drive shaft is transmitted to...
04/03/2012
8147103Flasher and straddle type vehicle equipped with the same
According to some embodiments, a flasher 101 to be mounted on a rear portion of a straddle type vehicle includes a lens 120, a cover 160 mated with the lens 120, and a leg 180 connecting the cover 160 with a vehicle body. A ...
04/03/2012
8146693Motorcycle and intake device thereof
According to some embodiments, a motorcycle includes a vehicle body frame 20, an engine 3 mounted on the vehicle body frame, a fuel tank 4 disposed above the engine, a radiator 5 disposed in front of the engine, and an intake device 6
04/03/2012
8142937Fuel cell system
A fuel cell system is capable of easily determining whether or not supply of gas to a cathode has been cut off after an issuance of a power generation stop command. The fuel cell system includes a cell stack which includes a plurality of fuel cells; a stop valve whi...
03/27/2012
8142247Exhaust device for outboard motor engine and outboard motor
An exhaust device for an outboard motor engine includes an exhaust passage, a catalyst an air inlet, and an air pump. The exhaust passage is connected to the engine arranged to support a crankshaft extending along an up-down direction. The catalyst is arranged in th...
03/27/2012
8142246Fuel supply system for boat and outboard motor
A fuel supply system for a boat, which prevents fuel piping from becoming complicated, includes a vapor separator unit connected to a fuel tank that is mounted on a hull and holds fuel supplied to an engine section, a low-pressure pump arranged to discharge the fuel...
03/27/2012
8142244Outboard motor
An outboard motor includes a propeller, an engine, a transmission, a casing, an engine cooling mechanism, a cooling jacket, a water intake opening, and a transmission coolant flow channel. The casing is arranged to house the transmission. The engine cooling mechanis...
03/27/2012
8142241Water jet propulsion watercraft
A water jet propulsion watercraft includes a hull, an engine disposed inside the hull, a jet propulsion device arranged to be driven by a driving force of the engine, a water detection unit arranged to detect whether or not the hull is immersed in water, and a contr...
03/27/2012
8141939All terrain vehicle with lower portion protector
A protector includes: a protector main body covering the lower portion of the vehicle body and a fixing plate for fixing the protector main body to the vehicle body. The protector main body has a surface portion and a recessed portion recessed from the surface porti...
03/27/2012
8141510Marine vessel steering device and marine vessel including the same
A marine vessel steering device includes a turning mechanism arranged to be attached to a marine vessel, an operation unit arranged to be operated by an operator to steer the marine vessel, a steering angle detection unit arranged to detect a steering angle of the o...
03/27/2012
8136498Two-plane type crankshaft
An engine 20 includes a two-plane type crankshaft 30 and a balancer shaft 50 for reducing a primary couple of the balancer shaft 50. The crankshaft 30 includes a crankshaft body 30a and a first gear 38. The fir...
03/20/2012
8133086Boat propelling apparatus and boat
A boat propelling apparatus is compact and capable of making an adjustment on its engine output characteristic. The boat propelling apparatus includes an engine, a surge tank and an intake manifold. The intake manifold includes therein an internal space for air to f...
03/13/2012
8133085Cowling structure for outboard motor
In cowling structure for an outboard motor, a through hole is formed below an upper-cowling joining surface of a lower cowling; control cables are supported with a cable supporting groove of a back side plate, and the back side plate is fixed to the through hole; a ...
03/13/2012
8133084Propulsion device
A propulsion device includes a propulsion device main body, an attachment mechanism, and a steering mechanism. The attachment mechanism is arranged to attach the propulsion device main body to a hull such that the propulsion device main body turns right and left wit...
03/13/2012
8133083Water jet propulsion boat
A water jet propulsion boat is constructed such that a fuel pressure detection device is free from a detection error or breakdown and a restart ability of an engine is protected against malfunction. A fuel tank is provided in a boat body of the water jet propulsion ...
03/13/2012
8130088Vehicle controler for straddle type vehicle
A vehicle controller for a straddle type vehicle includes a portable device that transmits a code signal and control unit comprising a receiver and an authenticator that respectively receive and authenticate the code signal. If the authentication is determined to be...
03/06/2012
8128442Outboard motor including drive shaft vibration damper
An outboard motor that is capable of reducing a trolling noise includes an engine which has a crank shaft extending in an up-down direction; a drive shaft extending downward from the crank shaft and including a torsion bar spring; a propeller shaft; a propeller prov...
03/06/2012
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