Yamaha Hatsudoki Kabushiki Kaisha

Yamaha Hatsudoki Kabushiki

Yamaha Kogyo Hatsudoki Kabushiki Kaisha

Kiyohiko Oguri

Yoshiharu Isaka

Shidehiko Miyashiro

Masato Yokoi

Wataru Kakuta

Mutsuaki Miyaki

Tsuyoshi Ohkawa

Kazuhiro Nishihara

Toshio Okamoto

Mitsuharu Soma

Yoshimi Tachibana

Makoto Nakazawa

A mount device includes an inner rod, a damper made of an elastic material to be mounted to the inner rod, and an outer cover to be mounted to the damper. The damper includes a plurality of projecting portions projecting radially outward from the inner rod and small-thickness portions thinner than the plurality of projecting portions in a radial direction. Spaces are formed radially outward of the small-thickness portions. The outer cover includes a plurality of contact surfaces to respectively come into contact with the plurality of projecting portions. The contact surfaces have a larger curvature than that of a circumscribed circle of the damper.

Mount device and vehicle

A vehicle with an engine connection. The vehicle further includes an engine, a rear wheel and a rear suspension that absorbs an impact when the rear wheel moves vertically. The engine connection has a front end connected to a rear surface of the engine, and a coil-shaped portion provided between the rear suspension and the rear wheel. A front end of the coil-shaped portion is connected to a rear end of the engine connection. The exhaust pipe is configured to enable division into the engine connection and the coil-shaped portion.

Exhaust pipe for a vehicle

A vehicle, such as a motorcycle, can include an exhaust pipe connected to a back or rear side of an engine of the vehicle. A rear cushioning member can be provided between the engine and a rear wheel of the vehicle. The exhaust pipe can include a front portion that extends from the engine backward on one side of the rear cushioning member, with respect to a widthwise direction of the vehicle, and a transverse portion that extends, in a direction substantially transverse to a lengthwise direction of the vehicle, from the one side to another side, between the rear cushioning member and the rear wheel.

Vehicle and vehicle exhaust pipe

A vehicle having a sufficient length of exhaust pipe and a member disposed above a rear suspension that is not too high. An exhaust pipe is connected to a rearward side of an engine. A rear suspension absorbs shocks generated when a rear wheel moves up and down. A coil-form part of the exhaust pipe is located between the rear suspension and a tire house of the rear wheel, within which the rear wheel moves up and down.

Vehicle

Several embodiments of air cooled rotary lawn mowers wherein the mower is provided with a cooling shroud for directing cooling air downwardly across the engine. The cooling shroud defines an air inlet that is spaced from the discharge chute so that grass clippings are not likely to enter it. The engine is laid out so that the center of gravity of the mower is disposed rearwardly of the axis of the cutting blade for facilitating turning.

Vertical engine for walk behind lawn mower

A rotary lawn mower having an air-cooled single cylinder four-cycle internal combustion engine for powering its cutting blade. The engine is air cooled and is disposed so that its exhaust port lies above the intake port and the carburetor is positioned above a raised portion of the scroll part of the lawn mower housing for good cooling of the exhaust port without heating of the carburetor. A valve operating mechanism is disclosed including a pair of push rods that are supported on the exhaust port side of the engine and which are surrounded by a mass of cylinder head and cylinder for assisting in heat dissipation.

Vertical engine for walk-behind lawn mower

An improved governor mechanism for an engine having angularly related staggered cylinder banks. The governor mechanism includes a link or motion transmitting member that is disposed within the stagger between the cylinder banks so as to provide a compact assembly.

Governor for vertical v-type engine

A vertical shaft internal combustion engine particularly adapted for powering a rotary type lawn mower. The engine is provided with a baffled crankcase so as to minimize the adverse effects of oil 'sloshing' within the crankcase while, at the same time, permitting flow between the baffles. In addition, an oil slinger arrangement is incorporated that is also baffled so as to reduce frothing in the crankcase to reduce aeration of the oil in the crankcase and also to direct the oil flow from the slinger.

Lubricating system for vertical shaft engine

A lawn mower or other similar walk behind type of implement that is designed to be operated in a normally erect position and which is tilted to its side for servicing. An engine is provided for the lawn mower having an output shaft rotatable about a vertically extending axis. The engine includes a lubricating system incorporating a crankcase in which the engine output shaft rotates and a crankcase ventilating system. The crankcase ventilating system is designed so as to prevent lubricant from flowing into the induction system when the engine is tilted on its side.

Growing community of inventors

Shizuoka, Japan

Kiyohiko Oguri