Abstract: An exerciser has a frame, a top cap, two handle units, two stepping boards, a wheel transmission mechanism, and a damping assembly. The wheel transmission mechanism is mounted on the frame and has a transmission wheel. The damping assembly is mounted on the frame and has a disk axle, a disk mount, a transmission belt, a magnetic disk, and a magnetic base. The disk axle is mounted rotatably on the frame at a position below the transmission wheel. The disk mount is co-axially mounted around the disk axle. The transmission belt is mounted around the transmission wheel and the disk mount. The magnetic disk is mounted co-axially around the sick mount and has a periphery extending into a recess defined in the magnetic base in a non-contact manner.

Abstract: An exerciser has a frame, a driving assembly, a damping assembly, and a linkage assembly. The frame has a base, a front supporting rod, and a rear supporting rod, and a grip assembly. The driving assembly is mounted on the frame and has a gear box and two cranks. The gear box is mounted in the rear supporting rod and has a box body, an input axle, an input gear, two unidirectional bearings, an output gear, and multiple transmission gear sets. The input axle is mounted rotatably in the box body. The input gear is co-axially mounted securely on the input axle. The unidirectional bearings are mounted respectively on two ends of the input axle. The output gear is mounted rotatably in the box body and has an output axle. The transmission gear sets are mounted between and engaged with the input gear and the output gear. Each crank has a first end connected with one of the unidirectional bearings.

Abstract: An exerciser has a frame, a driving assembly, a damping assembly, and a linkage assembly. The frame has a base and a rear supporting rod. The driving assembly is mounted on the frame and has two swinging rods, two sprockets, two chains, and two resilient members. The swinging rods are connected to the rear supporting rod. The two sprockets are mounted rotatably on the rear supporting rod. The two chains are respectively engaged with the two sprockets. The two resilient members are connected respectively to the chains. The damping assembly is mounted on the rear supporting rod and is connected to the driving assembly to provide a damping effect to the two sprockets. The linkage assembly is connected between the base of the frame and the two swinging rods to allow the two swinging rod to respectively swing in reverse directions.

Abstract: A twisting exerciser includes a base with a first shaft, a second shaft and a stop member respectively connected thereto. A first swingable unit and a second swingable unit are respectively and pviotably connected to the first and second shafts. The first swingable unit has a pad and first fan-shaped gear. The second swingable unit has a handle assembly and a second fan-shaped gear which is engaged with the first fan-shaped gear. The user holds the handle assembly, and the upper body and the lower body swing in opposite direction by the engagement between the first and second fan-shaped gears. The stop member limits the angle that the first fan-shape gears swings. The user may sits on the pad or stand on the pad to operate the twisting exerciser. The twisting exerciser is simple and safe.

Abstract: A twisting exerciser includes a base with a first shaft, a second shaft and a stop member respectively connected thereto. A first swingable unit and a second swingable unit are respectively and pviotably connected to the first and second shafts. The first swingable unit has a pad and first fan-shaped gear. The second swingable unit has a handle assembly and a second fan-shaped gear which is engaged with the first fan-shaped gear. The user holds the handle assembly, and the upper body and the lower body swing in opposite direction by the engagement between the first and second fan-shaped gears. The stop member limits the angle that the first fan-shape gears swings. The user may sits in the pad or stands on the pad to operate the twisting exerciser. The twisting exerciser is simple and safe.

Abstract: A bicycle trainer includes a magnetic control damping device controlling a resisting force of a roller set to simulate stamp strengths required by a bicycle on various roads. A lifting device controls a support frame and a base seat to drive a front fork of the bicycle up or down to dynamically simulate states of the body of the bicycle on various roads, so that the actual effect closest to the bicycle running on an uphill, smooth or bumpy road can be achieved. In addition, a power generation device converts the rotating power, generated by the roller set, into the electric power for the dynamic simulation or other electronic devices.

Abstract: A bicycle trainer includes a magnetic control damping device controlling a resisting force of a roller set to simulate stamp strengths required by a bicycle on various roads. A lifting device controls a support frame and a base seat to drive a front fork of the bicycle up or down to dynamically simulate states of the body of the bicycle on various roads, so that the actual effect closest to the bicycle running on an uphill, smooth or bumpy road can be achieved. In addition, a power generation device converts the rotating power, generated by the roller set, into the electric power for the dynamic simulation or other electronic devices.

Abstract: A climbing exerciser includes a base having two parallel rail posts to which two sliding units are respectively connected. Each sliding unit includes a sliding rod, a handle and a pedal. The sliding rod is movably located in the correspondent rail post. A transmission unit includes two down chain wheels and two up chain wheels respectively and rotatably connected to the support. Two front chains are engaged with the down chain wheels and connected with the connection members. Two side chains are engaged with the two up chain wheels and connected with the connection members. A cable is engaged with two respective two stationary pulleys and connected to the two side chains. A magnetic-resistance unit is connected to the support and driven by the two up chain wheels. The two sliding posts alternatively movable along the rail post to simulate rock climbing actions.

Abstract: A climbing exerciser includes a base having two parallel rail posts to which two sliding units are respectively connected. Each sliding unit includes a sliding rod, a handle and a pedal. The sliding rod is movably located in the correspondent rail post. A transmission unit includes two down chain wheels and two up chain wheels respectively and rotatably connected to the support. Two front chains are engaged with the down chain wheels and connected with the connection members. Two side chains are engaged with the two up chain wheels and connected with the connection members. A cable is engaged with two respective two stationary pulleys and connected to the two side chains. A magnetic-resistance unit is connected to the support and driven by the two up chain wheels. The two sliding posts alternatively movable along the rail post to simulate rock climbing actions.

Abstract: A twist exerciser includes a base, a first gear unit, a second gear unit, a seat, a feet rest and a handle unit. The first gear unit includes a first shaft rotatably connected to the base and a first gear is fixed to the first shaft and co-rotated with the first shaft. The second gear unit includes a second shaft rotatably connected to the base and a second gear is fixed to the second shaft and co-rotated with the second shaft. The seat is connected to a top end of the first shaft and co-rotated with the first gear. The feet rest has a first end fixed to the first shaft and a second of the feet rest has a transverse bar. The handle unit has a handle and drives the second shaft. The exerciser is easily operated and has simple structure and less noise.

Abstract: A dumbbell includes a bar, an axle, two weights and two cover. The bar includes a holding portion and two enlarged reception members connected to two ends of the bar. The axle extends through a passage of the bar and each reception member has a space for reception of the weight. Each weight includes a ridge and a weight body, the ridge is connected between the axle and the weight body. The two covers are respectively connected to the reception members to cover the two respective spaces. The weights are rotatable during using the dumbbell and the rotation exercises more muscles of the user's body.

Abstract: A twist exerciser includes a base, a first gear unit, a second gear unit, a seat, a feet rest and a handle unit. The first gear unit includes a first shaft rotatably connected to the base and a first gear 21 is fixed to the first shaft and co-rotated with the first shaft. The second gear unit includes a second shaft rotatably connected to the base and a second gear is fixed to the second shaft and co-rotated with the second shaft. The seat is connected to a top end of the first shaft and co-rotated with the first gear. The feet rest has a first end fixed to the first shaft and a second of the feet rest has a transverse bar. The handle unit has a handle and drives the second shaft. The exerciser is easily operated and has simple structure and less noise.

Abstract: A flywheel mounting assembly for an exercise bicycle has a flywheel, a housing, at least one bearing, a holder and a hub. The housing defines a mounting space and an inner surface. The at least one bearing is mounted in the mounting space of the housing. The holder is tubular, has a mounting hole, an end rotatably mounted in the at least one bearing and an end extending through and being mounted securely with the flywheel. The hub is mounted securely in the mounting hole of the holder and has an axle extending through a center of the hub. Accordingly, weight and rotation of the flywheel is supported by the housing and stress is equally sustained by the housing, bearing, holder and hub. Therefore, deformation or distortion may be effectively prevented for smooth and stable flywheel rotation.

Abstract: A low-impact exercise machine has a support device, a rotating device, a drive assembly and a handle assembly. The support device has a base, a pivot pin, a frame bracket, a supporting beam and two slideways. The rotating device is mounted rotatably with the support device and has a pivot post, a rotating panel and two rotating arms. The drive assembly is connected to the support device and the rotating device and has two driven segments. Each driven segment has a linking arm, two lateral beams, an operating shaft, a mounting bracket, a connecting stick and a transmitting shaft. The handle assembly is connected to the drive assembly with two handles.

Abstract: A low-impact exercise machine has a support device, a rotating device, a drive assembly and a handle assembly. The support device has a base, a pivot pin, a frame bracket, a supporting beam and two slideways. The rotating device is mounted rotatably with the support device and has a pivot post, a rotating panel and two rotating arms. The drive assembly is connected to the support device and the rotating device and has two driven segments. Each driven segment has a linking arm, two lateral beams, an operating shaft, a mounting bracket, a connecting stick and a transmitting shaft. The handle assembly is connected to the drive assembly with two handles.