Honda Motor Co., Ltd.

Honda Giken Kogyo Kabushiki Kaisha

Honda Giken Kabushiki Kaisha

Yutaka Tabata

Teruyuki Saitoh

Kazutake Koyama

Masahiro Yonemura

Takeshi Konno

Keita Ito

Tsutomu Hatsugai

Takahiro Ideguchi

Kenji Higashi

Tadashi Yamashita

Toshiharu Nasuno

Tamotsu Momosaki

Kunio Ito

A plastic fuel tank having polyethylene layers is disclosed. The polyethylene layer positioned as the outermost layer of the plastic fuel tank is a high-density polyethylene layer admixed with an ultraviolet inhibitor for minimizing transmission of ultraviolet light.

Plastic fuel tank

A plastic fuel tank is disclosed including polyethylene layers laminated respectively onto an upper surface and a lower surface of an ethylene/vinyl alcohol layer for preventing fuel seepage. The outermost polyethylene layer laminated onto the upper surface is a high-density polyethylene layer colored black so as to minimize transmission of ultraviolet light.

In a multi-blade fan for an air-cooled engine, by defining the inlet angle &#x3b2;and the angle &#x3b2;'to make the sum thereof less than 80&#xb0; (preferably defining &#x3b2;as 32&#xb0; and &#x3b2;&#x2032;as 36&#xb0;), the multi-blade fan achieves greater air volume than in the case where the sum is made 80&#xb0; or greater, where &#x3b2;is the angle between the relative velocity direction and the peripheral direction on the inlet side of the blades, &#x3b2;is the angle between the relative velocity direction and the peripheral direction on the outlet side of the blades, and &#x3b2;&#x2032;is the difference obtained by subtracting &#x3b2;from 180&#xb0;. The number of blades can therefore be reduced to realize lower noise level while still maintaining the same air volume as the prior art multi-blade fan.

Multi-blade fan for air-cooled engine

In an engine operated machine system including a hollow support rod connected at one end to an engine through a vibration insulator, an auxiliary weight is mounted at the other end of a crankshaft for generating a centrifugal force in the same direction as an inertia force of a piston, when the piston reaches top and bottom dead centers. Thus, it is possible to bring a center of gravity of the engine closer to the position of the vibration insulator, thereby suppressing the application of the vibration from the engine to the support rod to the utmost.

Engine operated machine system

A mulching mower is provided which is capable of cutting grasses finely without leaving uncut grasses and which is capable of discharging the cut grass clippings onto the cut grass path so as to be evenly dispersed. A pair of cutter blades are arranged to the right and to the left of the mulching mower in a cutter housing which opens downwardly. A guitar-shaped or figure 8 shaped enclosure wall hangs down from an under surface of an upper wall of the cutter housing to completely surround the periphery of the right and left cutter blades along tip end rotation loci of the blades at a slight distance therefrom. The enclosure wall is formed by side wall portions ar right and left outsides of the cutter housing and front and rear enclosure wall portions hang down from the under surface. The cutter blades rotate in opposite directions from each other so that tip ends of the cutter blades move from front to rear at right and left outsides, respectively, of the mulching mower. A plate-like separator member extends from a position on the approximate center of the rear enclosure wall portion to a vicinity of a rotary shaft of the cutter blade which is across the direction of rotation of the cutter blade.

Mulching mower

A lawn mower includes a cutter blade rotatably disposed in a cutter housing, for cutting grass, a discharge fan rotatably disposed in the cutter housing upwardly of the cutter blade, for discharging grass clippings cut off by the cutter blade, a power source disposed outside of the cutter housing, and a speed reducer mechanism disposed outside of the cutter housing upwardly of the discharge fan, for transmitting mechanical power from the power source at a reduced speed to the discharge fan to rotate the discharge fan at a speed lower than the speed at which the cutter blade rotates. The cutter blade comprises a flat member and lies substantially horizontally.

Growing community of inventors

Wako, Japan

Yutaka Tabata