Abstract: The invention relates to an improved adjustment mechanism to the anchoring angle of the rear supporting beam in a treadmill. It has two positioning plates along the two sides near the bottom of a treadmill frame. That bottom surface near the outer edge is equipped with a stop piece. The rear supporting beam is then attached via the holes on the extended parts to the positioning plates. Two connecting pieces are used to mount a coupling over a through axle, placed between two corresponding holes on the two extensions from the rear supporting beam. The two connecting pieces are connected to a threaded bar and the other end of the threaded bar is put through a punched hole on the supporting beam. A turn knob is threaded over the bar exposed outside the supporting beam to complete the assembly. By turning the turn knob on the threaded beam, it could be used to shift the rear beam's anchoring angle can be adjusted to further achieve the fine-tuning of the slanting angle of a treadmill frame.

Abstract: An improved mechanism to the electronic control panel of treadmills includes a main electronic control board which including a framework, a main control board, and a base plate. The main control board is assembled at a receiving slot in the center of the framework, while on one side of the receiving slot, an elongated groove is furnished, which is connected and fastened to the main control board so that it joins the opposite side of the main control board to form a gliding slot for the motor speed-control button. In the mean time, one side wall beneath the main control board near the gliding slot is equipped with an adjustable resistor that controls the motor operating cycle, and the adjustable resistor is made in a paralleled condition to the sliding slot, while the lever is extended towards outside. In such configuration, it serves to engage the shaft receptacle at the motor speed control button to complete the assembly.

Abstract: An improved vibration absorbing structure of treadmill is comprising two connecting rods on both sides of the support board; a tube on each angled tube with one insertion unit on either side of the tube; an angled tube is fixed on each connecting rod and this angled rod is connected to a tube with an elastic unit and an insertion unit; the tube is connected with a cap by a fixing bolt with another elastic unit in between. Therefore, the supporting board can send its vibrations to the two tubes and the vibrations can be effectively absorbed by the two elastic units at both sides of the two tubes.

Abstract: The present invention relates to an improved belt guiding device for treadmill including a rubber roller jacket on both rollers and the rubber rollers jackets are of proper thickness and the length is slightly less than the length of the rollers. So two ends of the rollers are exposed and is equal in length, also, the length of belt strip is narrower than the lengths of rollers and wider than the length of roller jacket. Therefore, after the belt strip is installed and tightly wrapped on the two rollers, the two roller jackets will generate the bent parts of equal length on the belt strip and these bent parts are able to accurately and effectively guide the belt strip along the rollers during the rotation of the belt strip.

Abstract: A treadmill with a preferred frame relates to a running track frame being anchored at the two sides of the mainframe that primarily used for accommodating and stabilizing a running board. And the front and the back of the running board is coordinated with front and rear rollers, and combined with a running track to provide the user to stand on top of the running track to perform the jogging motion. At this time, the running track will start to rotate repeatedly around the perimeter of the front and rear rollers due to abrasion. The characteristic is the particular runner frame has at least one opening slot, or equipped with an open slot on one of the surfaces, while the total length of that open slots shall exceed one-half of the distance between the front and rear rollers as an optimal choice. Therefore, the existence of that opening slot is utilized to provide adequate reduction to the rigidity of the metal structure in that framework, thus reduces the counter-force and vibrations during the operation.

Abstract: This invention pertains to a foldable jogging simulator in which each of the ends of two corresponding C-shape joint-bar pedals set has an action crank which powers a gear plate. Each of these gear plates has a toothed chain which is linked to a small gear. The two small gears on both sides are connected to the same pivoted shaft, providing a coordinated action with the two joint-bar pedals set. Furthermore, since a retarding wheel is installed in the middle of the pivoted shaft, a retarding force of motion is created; and as the other end of the joint-bar pedals set is installed with a coaxial sliding wheel, which adjusts is position (up and down) due to the rotation of a threaded column, the accidental disconnection of two pedals set is prevented. Finally, the base of the slanted support bar at the front portion is pivotally connected to a horizontal bar in the front of the machine, and this allows the machine to be folded, reducing its size and facilitate storage or transportation.

Abstract: A frame structure for exercise bikes consisting of a plurality of generally tubes for constituting a main frame or seat post of the exercise bike. Each elliptical tube includes two planar walls arranged in a parallel manner with their lateral sides joined by two curved walls to form an elliptical, tubular structure with curved sides. The elliptical frame structure has good structural strength and smooth surfaces to ensure safety. It also simplifies and facilitates assembly, and enlarges contact surfaces between tubes thereby reinforcing the connections.

Abstract: The exercising action of a rowing machine handle may be changed from pulling to pushing by relocating the front end of a link plate, having its rear end pivotally connected to the handle, from an upper position to a lower position on a pair of blocks mounted to a pivotal foot pedal.

Abstract: A sit-up exercise apparatus includes a substantially inverted-U shaped handle bar and a support bar provided with a head rest firmly secured to the side arms of the handle bar. A shaft is provided at each end of the handle bar and is fitted with a roller having a sector-like slot, a spring capable of rotation with the shaft and the roller, and a bolt for limiting rotation of the shaft and roller. Each roller is also tightly fitted with a cover. The rollers are capable of rearward or forward rotation with the forward push or rearward pull of the handle bar to a suitable extent. By means of the springs and the bolts, rotation of the rollers as well as the forward displacement of the handle bar may be controlled, achieving an excellent exercise apparatus which is safe and comfortable to operate.

Abstract: A collapsible riding type exercise apparatus includes a front frame, a seat bar and a forwardly inclining frame pivotally mounted to a rear frame, a pull bar pivotally disposed on the forwardly inclining frame, and a positioning mechanism located at a pivot joint between the forwardly inclining frame and the rear frame. By means of this arrangement, the exercise apparatus may be quickly closed or opened to facilitate transportation and storage.

Abstract: Enhanced body movements and optimum exercising effects are realized in a riding type exercising apparatus which includes separated hand drive and leg drive mechanisms, wherein the hand drive mechanism is located behind the body of the user so that when the user pulls on handles of the hand drive mechanism and pushes pedals of the leg drive mechanism, the handles travel an arcuate path about a pivot point at the hand drive mechanism so that the handles are disposed at a final point that is higher than their starting point. Simultaneously, a seat supporting the user is caused to move forwardly and upwardly in the opposite direction of the handles to prevent unrestricted large arm movements by the user.

Abstract: A multi-purpose exercising apparatus includes a mounting base securely provided with a horizontal seat cushion and a vertical backrest. A hollow top side of a backrest tubular body at a rear side of said backrest is connected to two adjusting mechanisms which are respectively connected to a support arm. A tensile arm is disposed below the seat cushion at a front edge thereof. A damping mechanism is disposed within the mounting base. The damping mechanism consists of three resilient ropes wound around revolving shafts, in which two of the ropes respectively pass around pulley sets to be pulled out from their corresponding support arms. The two ropes are then fixedly connected to two rings or a lever. The third rope is fixedly connected to the tensile arm. By means of pressing a button of the adjusting mechanism to adjust the angles of the support arms, the user may exercise the triceps or muscles of the arms, chest, legs or abdomen as desired.

Abstract: An improved rowing machine includes two main frames, a rear horizontal tube, two rowing bars, a link, a support bar and an action column. A user may ride on a slidable seat of the action column with both feet placed against two pedals at both sides of a front end portion thereof, with both hands pulling the rowing bars. The link drives the support bar to elevate the action column to move on its pivot, so actual rowing may be imitated to achieve exercising effects. As the pivot of the action column is located near the user's side, the slanting angle of the action column when elevated may be reduced to ensure safety. When pressed against by the user's feet, the pedals will provide an auxiliary lifting force according to the lever principle, this facilitating the user's application of force at the rowing bars.