Abstract: A body building station includes three juxtaposed posts extending downwardly from the underside of a securing seat of a seat of a frame. The side posts are pivotally connected to two rocker arms along the front side of the frame to form a leg exercising mechanism, while the central post is pivotally connected to a rotary frame at the rear side of the frame to form a twisting mechanism. Both tips of the rotary frame are connected to a bent press bar to form an abdominal exercising mechanism. Rubber resistance elements may be selectively positioned at suitable locations of the frame to facilitate the carrying out of different exercises.

Abstract: A leg press includes an adjustable foot-rest structure provided near the bottom of a front erect column of a main body for the user to rest his feet thereon as a pivot when doing scissors exercises of the thighs. Two separate cushions are provided on top of two corresponding swing arms. The cushions may synchronously move with the user's thighs to reduce the load of the legs' weight in exercising.

Abstract: A pull-up exercising machine including two opposite handlebars fastened to an upright frame above a base frame, a revolving axle transversely fastened to the upright frame and spaced between handlebars and the base frame, a first supporting rod perpendicularly connected to the revolving axle in the middle, a second supporting rod perpendicularly connected to the revolving axle at one end, a platform hinged to the first supporting rod, a weight holder mounted on the second supporting rod to hold weights, two connecting rods bilaterally connected between the platform and the upright frame to maintain the platform horizontal, and a retracting air cylinder connected between the second supporting rod and the base frame, for buffering the upstroke of the platform to a speed that is safe for the user.

Abstract: An automatic magnetic controller is linked with a computer to process a formula for the relationship between the wattage and the expended calories. Then the desired numbered of calories will be accurately exhausted based on a relative arrangement between a magnetic member and a flywheel by means of a motor controller and a position controller. By this arrangement, the tension can be accurately calculated based on the rotations per minute of the flywheel. The tension is continuously arranged and adjusted to make the wattage remain at a constant value. Additionally, the number of calories remaining to be exhausted is displayed on the computer. In this manner, the exhausted calories can be accurately controlled. The magnetic controller controls the tension on the flywheel such that at high flywheel speeds, the tension is smaller, and on the contrary, the lower the flywheel speed, the higher the tension.

Abstract: A horizontal stepper apparatus including a pair of pedal assemblies connected to a pair of cable and pulley assemblies may be used to simultaneously exercise the arms and legs of a user, with resistence force being provided by a hydraulic cylinder. The apparatus may alternatively be utilized to separately exercise the arms by rotating a seat 180.degree..

Abstract: A transmission mechanism for a magnetic damping type step machine includes two supporting plates bilaterally fastened to a machine base in the middle to hold a main shaft, a double-groove spool mounted around the main shaft to hold a flywheel, two pedals pivotably connected to a rear crossbar of the machine base at either side, each pedal having pedal rod with a foot plate and a linking rod with a locating plate respectively disposed at two opposite sides by the respective supporting plate, and two transmission wires, each transmission wire having one end wound round either groove of the double-groove spool in either direction and an opposite end turn over pulleys on the respective supporting plate and the locating plate of the respective pedal.

Abstract: A damping device includes a curved channel plate having a bottom end pivotally disposed around the peripheral flange of the flywheel of a rotary gymnastic apparatus and linked to a spring-supported hook at one end of a rotary knob-controlled traction device, two friction pads bilaterally fastened inside the curved channel plate and controlled by the traction device to touch the peripheral flange of the flywheel in giving a damping force to the flywheel.

Abstract: A bevel seated rowing machine includes a bevel seated base frame to hold a rotary wheel, a first rope inserted through a through hole on the rotary wheel and having two opposite ends wound round two opposite tubular flanges on the rotary wheel in the counter-clock wise direction and then connected to the actuating rod of a hydraulic cylinder by a link, and a second rope wound round the rotary wheel in the clockwise direction and coupled with a handle for pulling, wherein the link is comprised of a connecting bar and a T-bolt connected through a screw joint and turned in either direction to adjust the tension of the first rope.

Abstract: A riding exerciser includes two curved base frames, two parallel seat supports pivoted to the curved base frame in the middle to support a seat, a lower actuating rod having a top end pivotally connected between the curved base frames at the top and a bottom end fixed with a U-tube to hold a pair of pedals, an upper actuating rod pivoted to the lower actuating rod to hold a handle, and a link connected between the lower actuating rod and the seat supports, wherein the upper actuating rod has a series of lock holes on a bottom sector plate thereof for locking in any of a series of angular positions by a spring-supported lock bolt on the lower actuating rod; the lower actuating rod has a horizontal socket with a radial slot at the top, through which a headed screw is inserted and threaded into a screw hole on the handle to limit the rotating angle of the handle relative to the horizontal socket.

Abstract: An exerciser is provided for simulating the movement of mountain climbing and running. The exerciser is equipped with a pulling unit in the front top portion of a main supporting strut. The pulling unit and a set of two pedals are independent from each other so that the user can pull the pulling unit to simulate the movements of mountaineering and running. A rotating wheel with two slide slots is rotatably installed inside an indentation in the end of a bending extension of the main strut. Two transmission ropes are wrapped around the two slide slots in opposite directions. Each of the two transmission ropes passes through a guide wheel and a positioning wheel respectively, and two handles of the transmission ropes are connected to both sides of the body of the exerciser so that the pulling angle of the two transmission ropes can be enlarged. In this manner, the user can simulate the movement of mountain climbing and running by treading on the pedals and pulling the transmission ropes simultaneously.

Abstract: A vertical type abdominal and hip exercising apparatus including two swivel frames bilaterally and revolvably fastened to two angle bars on two opposite sides of a back rest being fastened to a bevel frame above a machine base and turned by the player's chest or legs to lift weights through traction cables and a pulley block for trunk bending or leg pressing exercises. The swivel frames are linked for synchronous movement. Each swivel frame has two position-adjustable actuating members for turning with the chest or the leg in lifting the weights.

Abstract: An exerciser driving mechanism generally comprising a driving wheel, a timing belt, a tension wheel, a free wheel, a flywheel, and a wool felt, with which the feeling of "inoperative pedaling" likely happened to the free wheel as experienced in the prior art exerciser upon instantaneously actuating the belt may be eliminated, the gear ratio of driving wheel to free wheel is increased, the contact area of the wool felt with the flywheel is reduced to enhance the speed of inertial rotation in regard to the flywheel, while maintaining the desired friction drag efficiency, thus resulting in an excellent smooth operation.

Abstract: A foot training machine having two pedal assemblies the topmost edge of each of which being constantly maintained at the horizontal position for smooth stepping. The pedal of each pedal assembly has two opposite ends pivoted to two rocker arms which are equal in length. The two opposite ends of the two rocker arms are respectively pivoted to two shaft tubes spaced on the base of the machine. The two rocker arms are freely rotated on the two shaft tubes permitting the pedal to be constantly maintained at the horizontal position while stepping.

Abstract: A magnetic retarding field generating mechanism comprising a substantially U-shaped bridging member having two sets of magnets at one end symmetrically disposed at the two opposite sides of a flywheel to produce a magnetic field therebetween for retarding said flywheel. The bridging member has an opposite end coupled to the wheel axle of the flywheel so that the relative position between the magnets and the flywheel does not change. A screw rod is driven by a motor to carry the bridging member to move forwards or backwards so as to change the retarding force applied onto the flywheel according to the depth the flywheel cuts in the magnetic field.