Abstract: A steering wheel includes a boss connected to the steering shaft and steering portions arranged around the boss, and the steering portion has a non-circular portion including a corner portion or an end portion, where the non-circular portion is covered with one or more cover pieces. Preferably, the one or more cover pieces cover the front surfaces facing the occupant in the non-circular portion, the rear surfaces positioned on the opposite side of the occupant, and the upper surfaces positioned between the front surface and the rear surface.

Abstract: A steering wheel includes a boss connected to the steering shaft and steering portions arranged around the boss, and the steering portion has a non-circular portion including a corner portion or an end portion, where the non-circular portion is covered with one or more cover pieces .Preferably, the one or more cover pieces cover the front surfaces facing the occupant in the non-circular portion, the rear surfaces positioned on the opposite side of the occupant, and the upper surfaces positioned between the front surface and the rear surface.

Abstract: A reaction injection machine utilizing a plurality of reactant liquids, including a plurality of supply vessels for containing the reactant liquids, an injection tank and a fixed quantity metering device including a plurality of metering tanks provided for the supply vessels, a plurality of metering pipes for connecting the supply vessels with the metering tanks, and a plurality of supply pipes for supplying to the injection tank the reactant liquids metered in the metering tanks, whereby the reactant liquids are metered in the metering tanks so as to be supplied to the injection tank through the supply pipes and then, are stirred for mixing in the injection tank so as to be injected into a mold immediately after having been mixed.

Abstract: A vacuum sampling container of a refractory material which comprises a small diameter cylindrical section and a large diameter cylindrical section coaxially connected in mutual communication and is evacuated and sealed, the free end of said small diameter cylindrical section being provided with a portion thinned to the extent that it is broken by virtue of the heat and pressure of the molten metal when the vacuum sampling container is immersed in a molten metal is disclosed. Also a sampler comprising said vacuum sampling container and a protective tube therefor is disclosed.