Abstract: A rotary member includes a rotating main body, and support members that are formed to be supported by bearings. Each of the support members includes a spindle core formed of a first metal, and a cylindrical sheath that sheathes a portion of the spindle core where slidably contacting respective one of the bearings and that is formed of a second metal different from the first metal.

Abstract: According to an aspect of the present invention, there is provided a rotary member including: a rotating main body; and support members that are formed to be supported by bearings, wherein each of the support members includes: a spindle core formed of a first metal; and a cylindrical sheath that sheathes a portion of the spindle core where slidably contacting respective one of the bearings and that is formed of a second metal different from the first metal.

Abstract: A method for producing centrifugally cast concrete product including charging pumpable concrete into a cylindrical form and rotating the form to cast the concrete by a centrifugal force, in which the concrete contains a high water reducing agent, an air entraining agent and an inorganic fine powder, and 5.5 to 18.5% of air content, thereby considerably reducing the amount of discharged sludge and, in turn, the labor and expenses required for the disposal of sludge, while maintaining the strength of the product as same as or greater than that for conventional products, without the need for complex processes.

Abstract: A suspension system for the rear wheel of a motorcycle employing a transversely mounted cushion member located below the rear wheel support frame of the suspension. Pantograph type linkage is employed to translate vertical relative motion of the rear wheel support frame into horizontal transverse motion actuating the cushion member. The linkage is pinned to both the motorcycle frame and to the rear wheel support frame as well as to the transversely mounted cushion mechanism to achieve the foregoing result. The cushion mechanism itself includes a hydraulic damper and a coil spring concentrically arranged.

Abstract: A closure cap device for a fuel tank of a motorcycle which is so constructed that a lever is pivotally attached to a part of the fuel tank body in such a manner that it may be freely contacted to and separated from a closure cap fitted on the fuel pouring port of the fuel tank, a lever engagement section is formed in the outer surface of the closure cap, and engagement members are provided at the tip end part of the lever and the body of the fuel tank so as to be mutually engaged when the lever is snugly fitted into the lever engagement section in the closure cap at the time of perfect tight-fitting of the cap to the fuel pouring port.

Abstract: A fairing of a sturdy structure designed to give a maximum of driving safety without impairing the steerability of the vehicle. The yoke structure to which a windshield is secured is comprised of a central rod and a pair of side rods secured to the front end thereof and includes a forwardly open U-shaped top formation within which an instrument panel is positioned, enabling the rider to observe the instruments without lowering the direction of his sight to any substantial extent. A light shield is arranged to prevent any reflection glare otherwise occurring on the inside surface of the windscreen when the instruments are illuminated during drive at night. The yoke structure is designed to be detachably connected with the body frame of the motorcycle at three locations thereon by simple fastening means. The windshield not only protects the rider from wind, rain and dust but is adapted to serve a number of additional functions.