Incrementally rotatable teeter-totter

摘要

A teeter-totter is disclosed that simultaneously incrementally rotates as it pivots up-and-down. The teeter-totter comprises a base having a fulcrum about which a beam is pivotally mounted for up-and-down movement. The beam is coupled to the fulcrum by a mechanism that simultaneously incrementally rotates the beam upon movement of the beam in at least one of the up-and-down directions.