Patent ID: 6669604
Filing Date: 2003-12-30
Classification: B62M

Abstract:
An electric cycling exerciser comprising:a housing; a shaft rotatably mounted to the housing; two pedals respectively operably attached to two ends of the shaft; a motor; and a gear rotatably mounted on the shaft and driven by the motor, the gear including a safety member rotatably mounted therein, the safety member being fixed to the shaft to turn therewith, one of the gear and the safety member including at least one groove for receiving an elastic element and an insert, the other of the gear and the safety member including at least one insertion groove for receiving the insert, the insert being biased by the elastic element into said at least one groove, thereby allowing joint rotation of the gear and the shaft; wherein when a user's foot is stuck between a respective pedal and the housing or the respective pedal is subject to a force greater than an engaging force between said at least one insertion groove and the insert, the insert is disengaged from said at least one insertion groove such that the shaft and the safety member are not turned while the gear is being turned.