Patent ID: 6761668
Filing Date: 2004-07-13
Classification: A63B

Abstract:
A speed control device with contact switch for a treadmill that includes a main frame having two opposite sides each having an arm laterally extending from a top portion of the mainframe, the speed control device comprising:at least one contact switch adapted to be mounted on a corresponding one of the arms of the treadmill and causing an analogy signal when a user touches the at least one contact switch; and a control circuit assembly adapted to be mounted in the treadmill and electrically connected to the at least one contact switch for receiving the analogy signal transmitted from the at least one contact switch, the control circuit assembly including: a signal transform circuit receiving the analogy signal and transforming the analogy signal into a digital signal; a waveform process circuit receiving the digital signal transmitted from the signal transform circuit and transforming the digital signal into a 1/0 signal; and a signal output circuit receiving the 1/0 signal from the waveform process circuit, the signal output circuit adapted to amplify and transmit the 1/0 signal to a central process unit of the treadmill for controlling a speed of the treadmill.