Yamaha Hatsudoki Kabushiki Kaisha

Yamaha Motor Company Ltd

Toshiyuki Sato

Atsushi Matsuda

Nobuyuki Kanno

Atsushi Kanda

Kazuhiko Nomura

Kazunori Yamada

Akihiko Tanaka

Kazuhiko Momura

Motorcycle

Steering arrangements for motorcycles herein the rear wheel is supported for steering movement and is mechanically coupled to the mechanism for steering the front wheel so that both wheels will be steered in unison. An arrangement is provided to adjust the steering ratio between the front and rear wheels in response either to vehicle load or an engine running condition.

Motorcycle having steered front and rear wheels with control for ratio

An embodiment of steering arrangement for motorcycles wherein the rear wheel is supported for steering movement and is mechanically coupled to the mechanism for steering the front wheel so that both wheels will be steered in unison. The rear wheel is driven by means of a shaft drive.

Rear wheel steering device for motorcycles

Two embodiments of steering arrangements for motorcycles wherein the rear wheel is supported for steering movement and is mechanically coupled by a positive linkage system to the mechanism for steering the front wheels so that both wheels will be steered in unison. In one embodiment of the invention, the positive linkage system includes irreversible gearing so that forces applied to the rear wheel will not effect its steering or steering of the front wheel.

Two embodiments of steering arrangements for motorcycles wherein the rear wheel is supported for steering movement and is mechanically coupled to the mechanism for steering the front wheel so that both wheels will be steered in unison. In one embodiment, the front and rear wheels are steered in the same direction while in the other embodiment, they are steered in opposite directions.

Several embodiments of steering arrangement for the rear wheel of a motorcycle wherein the wheel is steered from the side opposite to that which is driven. In some embodiments, a cantilevered trailing arm is employed for suspending the rear wheel that extends only on the driven side and in other embodiments the trailing arm has a pair of arms that are spaced on opposite sides of the wheel. In some embodiments, a brake assembly is provided on the driven side of the rear wheel and in another embodiment, the brake is provided on the steered side of the rear wheel.

A steering mechanism for a motorcycle or the like wherein the front and rear wheels are steered in response to operator input steering of the front wheel. The steering ratio between the front and rear wheels changes in response to a vehicle condition such as the amount of steering of the front wheel.

A steering arrangement for motorcycles wherein the rear wheel is supported for steering movement and is mechanically coupled to the mechanism for steering the front wheel so that both wheels will be steered in unison. The mechanism includes means for limiting the steering movement of the rear wheel and disabling the rear wheel steering upon failure.

Rear wheel steering device for motorcycles having limiting means

A vehicle which uses 'blended' fuel, i.e., fuel and lubricating oil combined, is provided with a fuel tank and an oil tank. A measuring device receives a predetermined amount of oil, and when an actuation occurs, usually associated with a fuel-filling operation the measured amount of oil is discharged into the fuel tank where it blends with the fuel. The actuation may, for example, be derived from the opening and/or closing of a fuel tank closure, or from the insertion of a fuel filler nozzle into the tank.

Oil supply means for tanks containing blended fuel and oil

A tricycle having two spaced fore wheels and a single rear wheel connected to a frame structure. The fore wheels are connected to the frame by a longitudinally extending shaft. A double wishbone suspension comprised of a pair of upper arms and a pair of lower arms connected by vertical links at their outer ends join the fore wheels to the frame and longitudinal shaft. The upper arms are pivotally connected to the frame while the lower arms are pivotally and separately connected to the longitudinal shaft by a shock absorbing cushion.

Tricycle with two fore wheels

A vehicle which uses 'blended' fuel, i.e., fuel and lubricating oil combined, is provided with a fuel tank and an oil tank. A measuring device receives a predetermined amount of oil, and when an actuation occurs, usually associated with a fuel-filling operation, the measured amount of oil is discharged into the fuel tank where it blends with the fuel. The actuation may, for example, be derived from the opening and/or closing of a fuel tank closure, or from the insertion of a fuel filler nozzle into the tank.

Growing community of inventors

Fukuroi, Japan

Toshiyuki Sato