Disclosed is an omnidirectional treadmill which has several connected belt units with supporting frames and endless belts which are moved revolving in the first spatial direction. In the second spatial direction, the endless belts of the belt units are moved. The endless belts are driven in the second spatial direction preferably by gear wheels mounted on rolls and by a toothed shaft. The movement of all endless belts is synchronized by coupling with special tooth form crown gears arranged between the belt units.

An apparatus used for cardiovascular workouts and strength training workouts contains a treadmill, a first weight-engaging pulley mechanism, a second weight-engaging pulley mechanism, a first guide channel, and a second guide channel. The treadmill is used to complete the cardiovascular workouts. The first weight-engaging pulley mechanism and the second weight-engaging pulley mechanism are used for strength training. Since the weight arrangement of the apparatus is movable along the first guide channel and the second guide channel, the user can complete a wide variety of strength training workouts. The apparatus also contains an incline-adjustment mechanism, which orients the treadmill belt track to simulate an incline or a decline. A belt direction-reversing mechanism of the apparatus helps change the direction a belt that is layered along the treadmill belt track.

A treadmill includes a frame, a front shaft assembly coupled to the frame, a rear shaft assembly coupled to the frame and spaced apart from the front shaft assembly, a running belt disposed about the front and rear shaft assemblies, and a motor coupled to the running belt. In a first operating mode of the motor, the force of rotation of the running belt is provided by a user of the treadmill. In a second operating mode of the motor, the force of rotation of the running belt is provided by the motor.

A stair stepping apparatus comprising: a plurality of stairs forming a treadmill or endless belt on which a user steps, wherein each stair comprises: a first link comprised of a major step portion joined to a minor riser portion by a rigid elbow, and a second link comprised of major riser portion joined to a minor step portion by a rigid elbow.

Provided is a nonpowered treadmill driven by a user's foot motion. The nonpowered treadmill includes a track part, a rotation unit rotatably supporting the track part, a detector configured to detect a rotation speed of the track part, and a resistance controller configured to control a rotation resistance of the track part in response to the rotation speed detected by the detector.

A treadmill has a front or rear set of pulleys and a looped running belt. The pulleys rotate with the movement of the belt, e.g., when a user walks, jogs, or runs on the treadmill. The pulleys are mounted on a rotating roller tube so that the roller tube rotates with the pulleys. The roller tube is mounted on a stationary shaft using bearings on each side and a one-way device that allows the pulleys to rotate in one direction. The rotation direction corresponds to the movement of the top of the belt from the front to the rear of the treadmill. The one-way device prevents the pulleys from rotating in the opposite direction, preventing the top of the belt from moving from the rear of the treadmill to the front. The one-way device may be a sprag clutch. The treadmill may be a motor-less, curved treadmill.

A stair stepping apparatus comprising: a plurality of stairs forming a treadmill or endless belt on which a user steps, wherein each stair comprises: a first link comprised of a major step portion joined to a minor riser portion by a rigid elbow, and a second link comprised of major riser portion joined to a minor step portion by a rigid elbow.

A passive-type treadmill is disclosed which includes a closed-loop belt rolling around two spaced apart rollers for providing a running platform, a first and a second handrail parallel to each other and extended upward angling to a surface of the closed-loop belt at larger than 45 degrees, and a towel rack having at least a first and a second clip for stretching a towel between the first and the second handrail.

A motor-less leg-powered curved treadmill produced that allows people to walk, jog, run, and sprint without making any adjustments to the treadmill other than shifting the user's center of gravity forward and backwards. A closed loop treadmill belt running between front and rear pulley rollers is formed with a low friction running surface of transverse aluminum, wooden, plastic, rubber or carbon fiber slats attached to each other in a resilient fashion. Since an essential feature of treadmill is the concave shape of the running surface of belt in its respective upper portion, the treadmill configurations insure that this shape is maintained during actual use. These configurations prevent the concave upper running surface portion from being pulled taut into a flat shape between the front and rear pulley rollers.

A method of realizing an omnidirectional motion includes: detecting a pace of an object moving over an omnidirectional motion platform; decomposing the pace of the object into speeds along at least two directions; and driving at least two pluralities of movable members, based on the speeds along the at least two directions, to translocate the object along one of the at least two directions and in a direction opposite to a corresponding speed of the pace of the object such that the object remains at a substantially same place over the omnidirectional motion platform. An omnidirectional motion apparatus includes an omnidirectional motion platform, and a pace detector and a data processor.