Abstract: An articulator can more simply configure a coupling mechanism between a lower jaw support portion and an upper jaw support portion at a joint portion. An articulator includes a first support portion; a second support portion; and a joint portion that couples the first support portion and the second support portion. The joint portion includes: a pair of projecting portions; and an engaging support portion. The projecting portion and the engaging support portion are attractable to each other by way of magnetic force.

Abstract: An articulator can more simply configure a coupling mechanism between a lower jaw support portion and an upper jaw support portion at a joint portion. An articulator includes a first support portion; a second support portion; and a joint portion that couples the first support portion and the second support portion. The joint portion includes: a pair of projecting portions; and an engaging support portion. The projecting portion and the engaging support portion are attractable to each other by way of magnetic force.

Abstract: In an apparatus for casting a metal comprise a crucible (2), a casting mold (3) and an electrode rod (10) for an arc discharge are provided in an interior portion of a casting chamber (1) capable of controlling a pressure, a supporting shaft (6) exists in a side of an outflow end portion of the crucible (2) close to a charging port (5) of the casting mold (3), the crucible (2) can be tilted around the supporting shaft (6), a crucible tilting means (7) exists in a side of a non-outflow end portion of the crucible (2), a clearance between a metal and the electrode rod is kept substantially constant after the arc melting of the metal (4) on the crucible (2) is started and the melting of the metal (4) makes progress and until the metal (4) in the melting state drops down due to the tilting of the crucible (2), and the arc discharge is kept during a period that the metal (4) flows and drops down.