Patent ID: 6334839
Filing Date: 2002-01-01
Classification: A63B

Abstract:
A treadmill which can be driven in both directions, comprising:selecting means for driving a walking belt backward; selecting means for driving a servomotor backward by receiving a command of said selecting means f or driving said walking belt backward; selecting means for accelerating said servomotor; inputting means for inputting the selected velocity data to said servomotor when an accelerating velocity is selected by said acceleration selecting means; selecting means for decelerating said servomotor; inputting means for inputting the selected velocity data to said servomotor when a decelerating velocity is selected by said deceleration selecting means; inputting means for inputting its original velocity data to said servomotor when said acceleration selecting means or said deceleration selecting means is not operated; a servomotor driven backward by receiving any command of said accelerating velocity data, said deceleration velocity data, or said original velocity data; a walking belt driven backward by the backward driving of said servomotor; adjusting means for automatically adjusting an inclination angle of said walking belt to 0 degree, when said walking belt is changed from a forward driving mode to a backward driving mode; means for increasing the inclination angle of said walking belt; driving means for driving an inclination angle motor based upon the increased inclination angle by said inclination angle increasing means; means for decreasing the inclination angle of said walking belt; driving means for driving an inclination angle motor based upon the decreased inclination angle by said inclination angle decreasing means; and means for maintaining the tension of said walking belt.