An exercise device (100) is supportable by a swivel mount (116) attached to a karabiner (114) and the swivel mount is arranged to lock under load at 90 increments. The device includes a rotatable reel (103) arranged to have a pair of inelastic straps (113a, 113b) rotationally wound thereabout from opposite directions. The reel is rotatable in conjunction with a locking mechanism consisting of a toothed sprocket wheel (104) secured to the reel and a manually operable slideable shaft (106) that is located within a barrel (107). Slots (136, 139) in the shaft and barrel, respectively, permit rotational movement of the sprocket wheel and, hence, reel (103) so that the straps (113a, 113b) may have their length altered against the bias of a coil spring unit (111). Translational movement of the shaft (106) within the barrel (107) causes the full diameter of the shaft (106) to engage between adjacent teeth of the sprocket wheel to lock the reel (103), thereby preventing further adjustment of the straps (113a, 113b). When the reel is released for rotational movement, so pulling on one or both of the straps against the bias of the spring unit causes the straps to be unwound evenly and reducing the pulling force below that of the spring unit causes the straps to be rotationally wound around the reel from opposite directions.

A damping device includes a casing structure, a retarding mechanism, a driving mechanism, a restoring mechanism and a resistance mechanism. An accommodating space is formed in the casing structure to accommodate the retarding mechanism, and a through hole and a hollow-out hole are formed at wall surfaces of two opposite sides of the accommodating space respectively. The retarding mechanism has a main shaft passed through out of the through hole, and a retarding shaft acting simultaneously with the main shaft. The driving mechanism has a wire wheel fastened on the main shaft. The restoring mechanism has a restoring wheel fastened on the wire wheel. The resistance mechanism has a metal element fastened on the retarding shaft, and a magnetic part is disposed between the metal element and the hollow-out hole, and an interval is formed between the magnetic part and the metal element.

A damping device includes a casing structure, a retarding mechanism, a driving mechanism, a restoring mechanism and a resistance mechanism. An accommodating space is formed in the casing structure to accommodate the retarding mechanism, and a through hole and a hollow-out hole are formed at wall surfaces of two opposite sides of the accommodating space respectively. The retarding mechanism has a main shaft passed through out of the through hole, and a retarding shaft acting simultaneously with the main shaft. The driving mechanism has a wire wheel fastened on the main shaft. The restoring mechanism has a restoring wheel fastened on the wire wheel. The resistance mechanism has a metal element fastened on the retarding shaft, and a magnetic part is disposed between the metal element and the hollow-out hole, and an interval is formed between the magnetic part and the metal element.

An exercise device comprising a bendable pole with spring-like properties. The bendable pole has grips at opposing ends and in a midsection. The exercise device is configured to be used for a variety of exercise methods. The exercise device provides personal fitness tracking in conjunction with a mobile software application.

An exercise device comprising a bendable pole with spring-like properties. The bendable pole has grips at opposing ends and in a midsection. The exercise device is configured to be used for a variety of exercise methods. The exercise device provides personal fitness tracking in conjunction with a mobile software application.

There is disclosed a chain tensioner system including a pulley for rotatably engaging a bicycle chain or belt, a pulley arm, upon which the pulley is mounted, the pulley arm movable between a closed position and an open position, a fixed tensioner arm, engaged with the pulley arm, and a tensioner element for connecting the fixed tensioner arm with the pulley arm, the tensioner element for keeping the pulley arm in either the closed position or the open position under tension provided by the tensioner element when the pulley arm is in either the closed position or the open position.

There is disclosed a chain tensioner system including a pulley for rotatably engaging a bicycle chain or belt, a pulley arm, upon which the pulley is mounted, the pulley arm movable between a closed position and an open position, a fixed tensioner arm, engaged with the pulley arm, and a tensioner element for connecting the fixed tensioner arm with the pulley arm, the tensioner element for keeping the pulley arm in either the closed position or the open position under tension provided by the tensioner element when the pulley arm is in either the closed position or the open position.

A device may include a base, a housing, a first shaft, and a second shaft, a first roller coupled to the first shaft, a second roller coupled to the second shaft, a first resistance that selectively impedes the rotation of the first roller and a second resistance that selectively impedes the rotation of the second roller, wherein the first shaft and second shaft are rotatable independently of each other, the first resistance is adjustable such that increasing the first resistance increases a force required to rotate the first roller and decreasing the first resistance decreases the force required to rotate the first roller, the second resistance is adjustable such that increasing the second resistance increases a force required to rotate the second roller and decreasing the second resistance decreases the force required to rotate the second roller, and the first resistance and the second resistance are independently adjustable.

A device may include a base, a housing, a first shaft, and a second shaft, a first roller coupled to the first shaft, a second roller coupled to the second shaft, a first resistance that selectively impedes the rotation of the first roller and a second resistance that selectively impedes the rotation of the second roller, wherein the first shaft and second shaft are rotatable independently of each other, the first resistance is adjustable such that increasing the first resistance increases a force required to rotate the first roller and decreasing the first resistance decreases the force required to rotate the first roller, the second resistance is adjustable such that increasing the second resistance increases a force required to rotate the second roller and decreasing the second resistance decreases the force required to rotate the second roller, and the first resistance and the second resistance are independently adjustable.

Disclosed exercise machines provide adaptive resistance in both directions of cable or flexible member movement. Perceived or felt resistance increases in response to the effort and/or speed of movement exerted by a user. During exercise, a user may become fatigued making further movement or weight support unwanted. With the disclosed embodiments, a user may simply stop their effort and the resistance and movement of the machine will stop. There are no plates or physical weights to harm a user and operation of the machine occurs in near silence. The disclosed embodiments are well suited for both beginner and accomplished athletes as the resistance adjusts seamlessly and continuously to match the force exerted by the user.