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 treadmill includes a deck, a first pulley disposed in a first portion of the deck, a second pulley disposed in a second portion of the deck, a tread belt surrounding the first pulley and the second pulley, and a platform incorporated into the deck.

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.

There is provided a motorless treadmill. The motorless track includes: a motorless track having a curved shape such that an inclination angle increases with respect to the ground toward a front end and a rear end, and configured to move around by user's foot steps; and a pair of side covers disposed on both sides of the motorless track, wherein the motorless track changes movement speed according to a location at which the user steps on the motorless track, and wherein, on at least one side cover of the pair of side covers, a speed-related indicator is disposed to indicate information related to movement speed of the motorless track.

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. An essential feature of treadmill is the concave shape of the upper portion of the belt running surface, the treadmill configurations ensure 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. The slats of the treadmill each have an end view crossectional I-beam shape, for strength and stability of the slat positioned upon the treadmill belt.

A dynamic belt-tensioning apparatus for a treadmill includes a base having a first end and a second end spaced from the first end. A foot-striking platform is movably supported by the base so as to allow vertical movement of the platform during operation of the treadmill. A drive belt has a fixed circumference and is positioned above a top portion of the platform. A drive roller is pivotally mounted adjacent to the first end of the base and engages the drive belt. A tensioning roller is pivotally mounted to the base and is capable of a range of movement to provide substantially constant tension to the drive belt in response vertical movement of the platform.

A treadmill having a curved treadmill deck is provided. Two curved side frames are disposed at two sides of the treadmill frame. Front and rear end ends of each curved side frame are higher than a middle section thereof. Inner sides of the two curved side frames are provided with a plurality of fixing seats, respectively. The fixing seats have fixing holes, respectively. An elastic deck is composed of a plurality of sheets connected side by side. The sheets each have perforations corresponding in position to the fixing holes of the respective fixing seats. A plurality of fixing pins are inserted in the perforations of the sheets of the elastic deck and secured to the fixing holes of the fixing seats. The elastic deck is forcibly fastened by the fixing pins and slightly deformed according to the curvature of the curved side frames to form the curved treadmill deck.

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 wooden, plastic or rubber slats attached to each other in a resilient fashion, wherein each transverse slat has at least one continuous fin descending downward therefrom.

[Problem] This invention provides a smaller size and space-saving low-floor treadmill which is improved in durability of support of the rea roller and which can prevent bending of the rear roller by using smaller sized roller in the rea roller for a moving belt of the low-floor treadmill.

[Means to Solve the problem] A low-floor treadmill having a running surface of a moving belt having a lower height from a floor, comprising the moving belt running in an endless manner between a front roller and a rea roller, the moving belt being driven by the front roller which is connected to a driving unit and being pressed down by a pressing roller to form a horizontal running surface, the moving belt being reversed after the rea end of the running surface at the rear roller positioned at a lower level from a floor, the moving belt being returned along the floor back to the front roller, characterized in that a plurality of bearings are arranged inside the rear roller and the bearings are fit in a coaxial spindle, and the rear roller is supported by said bearings to improve durability of the rea roller.

A treadmill deck may include a first side rail, a second side rail aligned with the first side rail, a first pulley connected to a first end of the first and second side rails, and a second pulley connected to a second end of the first and second side rails. A tread belt is disposed around the first pulley and the second pulley. Further, a first cover is connected to the first rail that spans at least a first portion of a first mid-region of the first rail and cantilevers over a portion of the tread belt that provides an unstable footing. Also, the tread belt moves with respect to the first cover.