Treadmill speed adjustment

摘要

A control mechanism for adjusting the speed of a treadmill belt is disclosed. The mechanism includes a disk mounted on a drum of the treadmill. A drive head which defines a plurality of dimensionally distinct cross-sectional circumferences is biased against the disk. The drive head is mounted on the drive shaft of a motor, the motor is mounted for displacement vis-a-vis the disk responsive to the displacement of a cable-fitted control lever which is connected thereto. A displacement of the motor adjusts the drive head positioning whereby the length of a path of the disk over the drive head's exterior surface may be modified, thereby causing a change in the angular velocity of the disk.