A resistance mechanism for an exercising device is provided. In one embodiment, the resistance mechanism comprises at least one flywheel. The resistance mechanism may also comprise at least one resistance index wedge configured to engage with the at least one flywheel. The resistance mechanism may also comprise a resistance adjustment mechanism connected to the resistance index wedge and configured to alter a resistance provided to the exercise device by increasing pressure provided by the at least one resistance index wedge to the at least one fly wheel assembly, wherein the resistance mechanism is configured to operate in an outdoor environment.

An exercise machine creates a simulated continuous resisted climbing motion. The machine includes a floor- or ground-contacting base frame and two or more substantially vertically oriented uprights, wherein at least one upright is rigidly connected to the base frame. The machine further includes two handles and two foot pedals, each handle and each foot pedal being movably engaged with an upright for linear reciprocating motion along the upright. The handles and foot pedals are interconnected so that they move concurrently. An adjustable resistance mechanism may be operatively connected to the interconnection of the handles and foot pedals to provide adjustable resistance for the simulated continuous climbing motion.

An exercise machine creates a simulated continuous resisted climbing motion. The machine includes a floor- or ground-contacting base frame and two or more substantially vertically oriented uprights, wherein at least one upright is rigidly connected to the base frame. The machine further includes two handles and two foot pedals, each handle and each foot pedal being movably engaged with an upright for linear reciprocating motion along the upright. The handles and foot pedals are interconnected so that they move concurrently. An adjustable resistance mechanism may be operatively connected to the interconnection of the handles and foot pedals to provide adjustable resistance for the simulated continuous climbing motion.

A stair exerciser apparatus includes a frame having a pair of inclined supports, a drive mechanism, and a plurality of stairs coupled to the drive mechanism for traveling around the pair of inclined supports. The driving mechanism has an upper shaft, a lower shaft and at least one drive chain mounted around the upper shaft and the lower shaft. A clutch mechanism is coupled to the upper shaft or the lower shaft of the drive mechanism. A flywheel is operationally coupled to the clutch mechanism, where the clutch mechanism couples the motion of the stairs to the rotation of the flywheel when the stairs are driven in a downward direction, and where the clutch mechanism decouples the motion of the stairs from the rotation of the flywheel when the stairs cease to be driven in the downward direction.

A stair exerciser apparatus includes a frame having a pair of inclined supports, a drive mechanism, and a plurality of stairs coupled to the drive mechanism for traveling around the pair of inclined supports. The driving mechanism has an upper shaft, a lower shaft and at least one drive chain mounted around the upper shaft and the lower shaft. A clutch mechanism is coupled to the upper shaft or the lower shaft of the drive mechanism. A flywheel is operationally coupled to the clutch mechanism, where the clutch mechanism couples the motion of the stairs to the rotation of the flywheel when the stairs are driven in a downward direction, and where the clutch mechanism decouples the motion of the stairs from the rotation of the flywheel when the stairs cease to be driven in the downward direction.

A portable escalator includes a frame, a stair caterpillar, a driving device and a braking device. The driving device includes a motor, a chain-sprocket unit and a belt-pulley unit. The motor includes a mandrel and is connected to the frame. The chain-sprocket unit is connected to the stair caterpillar. The belt-pulley unit includes two pulleys and a belt. The first pulley is connected to the mandrel. The second pulley is connected to the chain-sprocket unit. The belt is provided on the first and second pulleys so that the motor is operable to drive the stair caterpillar through the belt-pulley unit and the chain-sprocket unit. The braking device is connected to the mandrel so that the braking device is operable to stop the mandrel.

A portable escalator includes a frame, a stair caterpillar, a driving device and a braking device. The driving device includes a motor, a chain-sprocket unit and a belt-pulley unit. The motor includes a mandrel and is connected to the frame. The chain-sprocket unit is connected to the stair caterpillar. The belt-pulley unit includes two pulleys and a belt. The first pulley is connected to the mandrel. The second pulley is connected to the chain-sprocket unit. The belt is provided on the first and second pulleys so that the motor is operable to drive the stair caterpillar through the belt-pulley unit and the chain-sprocket unit. The braking device is connected to the mandrel so that the braking device is operable to stop the mandrel.

An exercise system and an adjustment method thereof. The exercise system includes an exercise machine and a data transmission device. The exercise machine includes a control unit, a storage unit, a stepless force device, a sensor, a user operation part and an operation interface. During exercise, the control unit executes the exercise program to dynamically change resistance according to a sensed location, speed or acceleration of the user operation part and an adjustable parameter. Through the data transmission device, the user can download the personal training parameter from a remote device into the exercise machine, or upload the training result and the personal training parameter to the remote device.

An exercise device comprises a flywheel, a driving assembly, and a control assembly. The driving assembly drives the flywheel to rotate. The control assembly comprises an angle sensor for measuring the change of angular displacement of the flywheel during a specific period of time. The control assembly calculates the angular velocity or the angular acceleration of the flywheel by the measured angular displacement during the specific period of time. The control assembly determines if the flywheel is to be stopped according to at least a criterion.

The present invention concerns a gymnastic machine of the type having movable steps, comprising a supporting frame, for the resting of said gymnastic machine on the floor, a movable stair comprising a plurality of elongated elements, each elongated element being hinged in series to a preceding elongated element and to a following elongated element, so as to form a closed series, two consecutive elongated elements forming a step of said movable stair acting respectively as tread and riser, said gymnastic machine being characterized in that at least one elongated element comprises at least one first and one second part articulated to each other.

The present invention also concerns an operating method of said gymnastic machine.