Abstract: Disclosed is a gear reduction mechanism, comprising: a rotation body without rotation shaft to provide rotation energy; a speed reduction input part mounting inside the above rotation body, which obtains the above rotation power, and uses the obtained rotation power to rotate relative to the axis of rotation body; a speed reduction output part that connected with the above speed reduction input part, which used to output the power by the rotation speed that equal to or lower than the speed of the above rotation body; the first execution part and the second execution part that connected with the above speed reduction output part, which used to rotate under the action of the force of the above speed reduction output part.

Abstract: A motorcycle shifting arrangement is connected to a transmission of the motorcycle for shifting the transmission between a higher gear and a lower gear. The motorcycle includes an original shifting structure having an original shift member pivotally mounted on an original pivot shaft coupled to the transmission at a location adjacent a foot rest attached to a bottom portion of the motorcycle. A supplemental shifting structure is pivotally attached relative to a supporting structure at a forward location on the motorcycle and has a foot engaging shift member adjacent the foot rest for permitting shifting of the motorcycle between higher and lower gears while the motorcycle operator has a foot supported on the foot rest by applying downward force of the operator's toe on either of the original shift member or the foot engaging shift member of the supplementary shifting structure.

Abstract: Provided are a scent supply apparatus and a washing/drying machine including the same. The scent supply apparatus of a washing/drying machine including a tub in a casing, and a guide duct carrying air into the tub, is detachably installed at one side of the guide duct and supplies a scent into the tub. Because the scent supply apparatus is installed in the guide duct, the scent may be forcibly supplied into the washing/drying machine by the air being introduced into the tub from the guide duct. Accordingly, the scent may be actively supplied into the washing/drying machine, without depending only on its own diffusion, thereby improving scent supply efficiency. Also, when the scent source is exhausted and there is a need for replenishment thereof, a user may easily perform the replenishment of a scent source.

Abstract: There is provided a support device for a rocker arm, which is capable of suppressing deformation or wear of a washer, and greatly improving the working efficiency in assembling the washer to the rocker arm. The support device supports the rocker arm having a supported portion, for driving an engine valve of an internal combustion engine. A rocker shaft is supported between a pair of shaft holders arranged in the cylinder head, for pivotally supporting the rocker arm thereon via the supported portion. A washer has engaging pieces, and is attached to one of opposed ends of the supported portion of the rocker arm and one of the shaft holders, in a manner interposed between the opposed ends. The one of the opposed ends is formed with an annular engaging portion for having the washer engaged thereon via the engaging piece.