Abstract: A switching lever of a vehicle door lock device includes a lever main body, an inertial lever having a mass body pivotably disposed on the lever main body so as to be pivotable from its initial position about a pivot, and a torsion coil spring disposed between the lever main body and the inertial lever and biasing the inertial lever towards its initial position. If the inertial lever is disposed in its initial position and is displaced integrally with the lever main body, the inertial lever will press a pawl, thereby causing a fork to switch to an unlocked position. However, if an inertial force greater than a pre-determined value acts on the mass body, the inertial lever will pivot from its initial position in a direction opposite of the interial force and avoid pressing the pawl, such that the fork is maintained in a locked state.

Abstract: A method and apparatus for follow-up controlling the weaving movement of a weaving device in consumable electrode type arc welding, in which welding currents at both ends of the left and right side of the weaving motion of the torch with respect to a welding line are detected and compared. If the detected welding currents are not equal, the weaving device mounting the torch is shifted either to the left or right with respect to the welding line depending upon which of the welding currents is larger until the detected welding currents become equal to each other.