US Patent 7229209 Pendulum box for clock

A pendulum box for a clock pendulum box includes a tumbler seat, a pendulum mover pivotally mounted on the tumbler seat, and a pendulum rod mounted on the pendulum mover and having a portion secured in the pendulum mover to move therewith. Thus, the pendulum rod is combined with the pendulum mover closely, so that the pendulum rod is moved with the pendulum mover synchronously. In addition, the pendulum rod is combined with the pendulum mover rigidly and stably, thereby preventing the pendulum rod from producing vibration or sway during movement.