Abstract: A stationary exercise device including a base frame, a load carrier unit, and two exercising units, each exercising unit including a first oscillatory arm and a second oscillatory arm respectively pivoted to the base frame, a connecting plate having a front end pivoted to the second oscillatory arm and a rear end, a guide link having a top end fixedly mounted with a hand grip and a bottom end pivoted to the rear end of the connecting plate, the top and bottom ends of the guide link being moved along a respective oval track and the middle part thereof turned on an axis when the stationary exercise device is operated.

Abstract: A magnetic damping device including a belt removably and separably positioned around the peripheral groove of the metal flywheel of an indoor exercise bicycle, and a plurality of permanent magnets respectively fastened down the belt and spaced along its length and adapted to impart a magnetic damping resistance to the rotary motion of the metal flywheel.

Abstract: A step exerciser including a base frame having a support, an adjustable wheel holder mounted in the support and holding a pulley, two rockers pivoted to the support at two opposite sides, two pedals having a respective front end respectively pivoted to the rockers, two hydraulic cylinders bilaterally pivoted to the base frame at the rear side, two guide rods pivotably connected between the pedals and the piston rods of the cylindrical cylinders, two links pivotably connected between the piston rods of the hydraulic cylinders and the rockers, and two actuating rods respectively turned about the connections between the links and the piston rods of the hydraulic cylinders and pivotably connected between the opposite sides of the support and two opposite ends of a steel cable, which is mounted on the pulley.

Abstract: A step exercising machine including a base frame having an upright support, a T-shaped steering rod mounted in the upright support, a first steering gear mounted on the upright support around the vertical rod section of the T-shaped steering rod, two pedals respectively turned about the two opposite ends of the T-shaped steering rod, a second steering gear and a third steering gear respectively mounted around the two opposite ends of the transverse top of T-shaped steering rod and meshed with the first steering gear at two opposite sides, a locating rod transversely coupled to the T-shaped steering rod at the bottom, and two hydraulic cylinders respectively coupled between the pedals and the two opposite ends of the locating rod, wherein the second steering gear and the third steering gear are alternatively turned relative to the first steering gear when the pedals are alternatively stepped up and down, thereby causing the pedals to oscillate leftwards and rightwards alternatively.

Abstract: A stationary bike including a stand, a seat and handlebar mounting frame mounted on the stand to hold a saddle and a handlebar at two opposite ends, a transmission gear box mounted in the stand, a crank and pedal assembly pedaled to drive the transmission gear box, and a damping resistance producing device for acting with the transmission gear box to produce a damping resistance upon pedaling of the crank and pedal assembly, wherein the seat and handlebar mounting frame is turned about a pivot on the stand and supported on a link and the transmission gear box is connected to the stand by a pivot such that the seat and handle bar mounting frame is alternatively oscillated up and down when the crank and pedal assembly is pedaled to drive the transmission gear box.