Abstract: An exercising device includes a main frame, a seat, a backrest, a swing unit, a magnetically controlled damper, and an electronic control panel. The swing unit is swingably mounted on the upright of the main frame. The swing unit includes two handlebars extending from the upright to the seat respectively. The magnetically controlled damper is pivotally mounted between the swing unit and the main frame. The electronic control panel is electrically connected with the magnetically controlled damper. When the two handlebars are moved by the user, the magnetically controlled damper provides a damping force to retard movement of the two handlebars. The electronic control panel controls and regulates the resistance of the magnetically controlled damper.

Abstract: A treadmill includes a frame having two sides each provided with two sprockets, two slide rails mounted on the two sides of the frame, two chains engaging with the two sprockets at the two sides of the frame respectively and corresponding to the two slide rails respectively, a plurality of elongate board mounted between the two chains, and a plurality of rollers mounted on each of the two chains. Each of the elongate board has two ends each provided with a connecting member connected with one of the two chains. The rollers on each of the two chains rest on one of the two slide rails. Thus, when the two chains are rotated, the rollers on each of the two chains slide on one of the two slide rails.

Abstract: A rowing simulation trainer includes a base frame, a pulling unit, an inertia wheel unit and a guiding unit. The pulling unit includes a shaft, a first belt wheel, two cord wheels, two pulling cords, two handgrips and two elastic coiled plates. The guiding unit includes two mounting tubes. Each of the two pulling cords extends through one of the two mounting tubes. Thus, the two cord wheels and the two pulling cords cooperate to drive the inertia wheel unit and are respectively operated independently without interfering with each other. In addition, the two pulling cords are limited by the two mounting tubes so that the two pulling cords are kept in line with and will not be deflected from the two cord wheels.

Abstract: An oblong orbital exercising machine includes a main frame, an upright, a seat support, a cycle movement mechanism, two swinging handles, two drive bars, two pedal units and two adjustment units. Each of the pedal units includes a fixing plate, a rocking plate, two springs, two fastening rods and a pedal. Each of the two adjustment units includes a fixed disk, an adjusting disk, two limit stubs, a hollow rod, a hollow mounting sleeve and a positioning pull pin. Thus, when the pedal units are moved in concert with the drive bars, the pedal of each of the pedal units is adjusted to correspond to the oblong trace of movement. In addition, the user can adjust the position of each of the pedal units easily and quickly by operation of each of the two adjustment units.

Abstract: An adjusting structure of an elliptical trainer contains: a base including an upright column, two rotatable posts rotatably connected with the upright column, two driving rods rotatably coupled with the two rotatable posts, a rotating device mounted on the base, and two shafts fixed on two side surfaces of the rotating device. Each shaft is in connection with an adjuster which has a fixing disc, an adjustment disc, and a positioning element. The fixing disc has a plurality of first orifices and a plurality of limiting stems. The adjustment disc has two opposite arcuate slots, a first hole, and a hollow tube. The positioning element is inserted into one of the plurality of first orifices via the hollow tube and the first hole, a hollow fitting sleeve is fitted with the hollow tube, and the hollow fitting sleeve is fitted with each driving rod.

Abstract: An oblong orbital exercising machine includes a main frame, an upright mounted on the main frame, a seat support mounted on the main frame, a cycle movement mechanism mounted between the seat support and the main frame, a seat mounted on the seat support, two guiding tracks mounted on the main frame, two swinging handles pivotally connected with the upright, two drive bars each having a first end pivotally connected with the cycle movement mechanism, two pedal units mounted on a second end of the respective drive bar, two driven bars each having a first end pivotally connected with the respective swinging handle and a second end pivotally connected with the respective drive bar, and two rollers each pivotally connected with the respective driven bar and each movably mounted in the respective guiding track.

Abstract: An oblong orbital exercising machine includes a main frame, an upright mounted on the main frame, a base frame mounted on the main frame, a support plate mounted on the base frame, two swinging members pivotally connected with the base frame, two primary rollers each connected with the respective swinging member and each placed on the support plate, a cycle movement mechanism mounted on the main frame, a belt wheel mounted on the upright, a belt mounted between the belt wheel and the cycle movement mechanism, two cranks mounted on the belt wheel, two driving levers each pivotally connected with the respective crank and the respective primary roller, two pedals each pivotally connected with the respective driving lever, two handles each mounted on the upright, and two driven levers each pivotally connected with the respective handle and the respective pedal.

Abstract: An oblong orbital exercising machine includes a main frame, an upright, two swinging handles, a cycle movement mechanism, two tread bars, two sliding bars, two pedals, two cranks, two rollers, two guiding tracks, two pivot members, and two ball bearings. The top face of each of the guiding tracks has an arcuate convex shape to correspond to the respective roller. Each of the guiding tracks has two upward extending side wings formed on two opposite sides thereof. Each of the pivot members has a threaded rod threadedly connected with a respective one of the swinging handles. Each of the ball bearings is located between a respective one of the pivot members and a respective one of the swinging handles. Each of the ball bearings is mounted on the threaded rod of the respective pivot member.

Abstract: A medical wheelchair includes a support frame, a front bracket pivotally connected with the support frame, a rear bracket pivotally connected with the support frame, a mounting bracket pivotally connected between the front bracket and the rear bracket, a seat unit mounted on the mounting bracket, and a drive mechanism mounted between the support frame and the mounting bracket to move the mounting bracket and to adjust the height of the seat unit. Thus, the support frame, the mounting bracket, the front bracket and the rear bracket form a parallelogram linkage, so that the mounting bracket is moved smoothly to prevent the seat unit from being vibrated during adjustment of the height of the seat unit. In addition, the drive mechanism provides a buffering effect to the mounting bracket so that the mounting bracket and the seat unit are moved smoothly and stably.