Abstract: A vehicle supported on driven wheels includes a frame supported on the wheels, a platform supported on the frame at a pivot, a flexible member including a first end secured to the platform at a first side of the pivot and a second end secured to the platform at a second side of the pivot opposite the first side, and a mechanism engaged with the member and driving the wheels in one rotation as the member reciprocates through the mechanism due to oscillation of the platform about the pivot.

Abstract: A mini bike for strengthening a leg muscle, and for enjoying amusement and a leisure time is provided. The mini bike having a pedal as a power generator includes: a driver having a first bevel gear in order to transmit rotation power generated by a rolling motion of a pedal; a second bevel gear installed to transmit rotation power generated in the driver; a first power transmission gear coaxially installed in the second bevel gear to transmit rotation power to a spline shaft; a clutch positioned at the spline shaft to selectively connect rotation power of the first power transmission gear to a first gearshift and a second gearshift and for controlling a low speed and a high speed; a first driving gear and a second driving gear for rotating by selection of the clutch; and a driving controller including a gearshift in which the clutch is connected to the cable in order to select the first gearshift and the second gearshift.

Abstract: An exercise wheel is provided. The exercise wheel includes a wheel, a first support bar, and a second support bar, wherein a support portion is formed inside the wheel, and the support portion includes a first surface and a second surface opposite to the first surface; an end of the first support bar is connected to the support portion, and the other end vertically extends outwardly in a direction away from the first surface; the second support bar and the first support bar are symmetrical about a center of the wheel, an end of the second bar is connected to the support portion, and the other end vertically extends outwardly in a direction away from the second surface; therefore, when holding the first and second support bars with two hands, a user can drive the wheel in a mode of riding a bicycle, so a body of the user moves forward and backward, so as to work muscles of an upper part of the body.

Abstract: A human-powered scooter propelled by side-to-side movement of the user. The scooter has a steering mechanism coupled to a front wheel, and two frame arms pivotably coupled to the steering mechanism and extending rearward, to which two rear wheels are respectively coupled. A novel linking piece coupled to the steering mechanism can engage the frame arms in order to restrict their pivoting to equal magnitude in opposite directions. The linking piece can also disengage from the frame arms to allow the frame arms to be folded up. The pivoting axes of the two frame arms are predetermined such that, when folded, the frame arms are as near as possible to being parallel to the main shaft of the steering mechanism. Means for enabling the steering mechanism to directly control the orientation of the rear wheels, and means for directly braking at least one of the rear wheels are also disclosed.

Abstract: A bicycle propelled by stepping motion comprises a frame, forward and rear wheels, and a steering wheel. A pair of elongate pedals extend rearward from a pivot connection to the frame. An axle is mounted for rotation to the frame and has a crank arm at either end. A drive sprocket is fixed to the axle for rotation in a vertical plane, and an endless chain couples the drive sprocket to a rear wheel sprocket. Each pedal carries a connecting structure that receives an associated connecting element that extends horizontally from one of the crank arms. The connecting structure defines an arcuate path along which the associated connecting element is constrained to displace. The path is so shaped that the connecting structure engages the connecting element with a contacting surface oriented normal to the circle which the connecting element is constrained to follow by virtue of connection to the crank arm. Less force is misdirected and smoother operation is obtained.

Abstract: A pedal-driven scooter includes a frame, a head tube, a driving mechanism and two pedals. The pedals can move alternatingly to power the driving mechanism and making the rear wheels to roll. Therefore, a user can standing on the pedals to operate the scooter without kicking the floor as the conventional scooter.

Abstract: An improved pedal driving device of a standing type bicycle includes driving sprockets installed at positions of first and second rotating shafts of first and second cranks respectively, and a chain installed between the two driving sprockets for rotating the two driving sprockets synchronously, such that left and right pedals pivotally and respectively installed between other ends of the first and second cranks and provided for pedaling by a user's legs, and when the first and second cranks drive the first and second rotating shafts to rotate, the two driving sprockets and the chain are operated together to rotate the first and second rotating shafts and the first and second cranks synchronously and drive the left and right pedals to revolve along an elliptical track with a clash-free and smooth movement, so as to achieve a smooth, comfortable and safe operation of the bicycle.

Abstract: The present invention is applied to pedal vehicles, or mixture of electric and pedal vehicles, or combination of electric and pedal vehicles, especially to a bicycle capable of being pedaled bidirectionally and driven to move in unidirectional.

Abstract: A pedal mechanism for a wheeled device includes a frame, at least one wheel having a geared hub, and the at least one wheel rotatably supported by the frame. At least one pedal lever is pivotably mounted to the frame at a mounted end and each lever has a drive end opposite the mounted end. A rotatable drive gear is carried by the frame and includes an axle extending from at least one side. A crank is coupled between the pedal lever device end and the axle. An endless chain is coupled between the geared hub and the rotatable drive gear so that movement of the at least one pedal lever causes rotation of the wheel. The wheeled device may also include a system controller and a motor, wherein a user controller panel allows for combined use of the pedal mechanism and the motor.

Abstract: An apparatus including a frame with a pivot axis defined thereupon; a drive wheel coupled to the frame; a first and a second foot link operably coupled to drive wheel to transfer power to the drive wheel so as to propel the apparatus, each including a foot receiving portion for receiving an operator's foot, a front end, and a rear end; and an adjustable stride length mechanism coupling the rear end of the foot link to the pivot axis at a radial length, the adjustable stride length mechanism including a plurality of attachment points for adjusting the radial length.

Abstract: An apparatus including a frame with a pivot axis defined thereupon, a crank arm bearing at the pivot axis; a first and a second crank arm coupled to the crank arm bearing; at least two wheels coupled to the frame, at least one of which is a drive wheel; a first and a second foot link, operably coupled to drive wheel to transfer power to said drive wheel so as to propel the apparatus, each foot link including a foot receiving portion for receiving a user's foot, a first end coupled to the frame, and a second end coupled to a respective one of the first and the second crank arms, wherein the foot receiving portion is movable along a generally elliptical path having a stride length greater than 17 inches.

Abstract: This invention relates to a foldable vehicle comprising at least three wheels which of one wheel is a steering wheel, a steering handle, a frame connected with the steering element and having at least one standing surface. Upon folding the frame will be movable with respect to the steering handle to statically fit together in a compact manner Hereby a practical and efficient vehicle for personal transportation and commuting is created.

Abstract: The present invention relates to a step board, and has an object to provide a step board with simple parts in order to prevent minor malfunctions. In order to achieve the object above, the step board according to the present invention includes a plurality of bars, each having a top surface to step thereon and a bottom surface mounted with a rotation body, a driving section hinge-coupled with the front ends of the bars for rotatively supporting the bars in the vertical direction and mounted with a first caster on the bottom surface thereof, and a base plate rotatively coupled with the driving section at the front end thereof, mounted with a plurality of second casters on the bottom surface thereof and curved at a portion corresponding to the rotation body, wherein the rotation body rolls to move by rotating along the curved portion of the base plate as the plurality of bars rotate in the vertical direction.

Abstract: The vehicle has propulsion generated to the stretching or the contraction of the limbs that push or drag the seat (3) placed on a slide (15) onto guides (16) in one way or in the other. The push is given with the limbs onto the toe-clip device (19) and onto the driving device (20) whereas the traction is actuated dragging the seat (3) with the belt (18). A mechanism (1) is then provided having a connecting rod (2) connected with the seat (3) and with a plate (7) integral with a crown wheel (9) connected by a chain (10) to a sprocket-wheel (11) equipped with a free wheel device (12) and transmitting the motion to the back driving wheels so as to determine the moving of the vehicle.

Abstract: An improved two wheeled reciprocating pedal driven scooter has a frame, front steering wheel, rear drive wheel, and rear wheel drive mechanism. The drive mechanism has two reciprocating foot pedals straddling the frame and extending to a forward hinge attachment location on the frame. The hinge location is at or above a drive axle. Each foot pedal has a short portion and an intersecting long portion forming a bend. The bend angle is 90 degrees or greater and is located at or below the frame. The attachment location of the foot pedal to the drive mechanism is at or near the bend. When the long portion of one foot pedal is at the bottom of the foot pedal stroke it is substantially horizontal, while the long portion of the other pedal is at the top of the stroke and is inclined to a maximum stroke angle of less than 35 degrees.

Abstract: A foldable steering column of vehicle including a steering member with a steering fork. The foldable steering column includes a base coupleable to the steering fork; a steering tube pivotally coupled to the base between at least a first position aligned with the base and second position not aligned with the base; and a sleeve operably associated with the base and the steering tube for positioning between a first position where the steering tube is secured to and aligned with the base and a second position where the steering tube is free to pivot relative to the base.

Abstract: An improved pedal driving device of a standing type bicycle includes driving sprockets installed at positions of first and second rotating shafts of first and second cranks respectively, and a chain installed between the two driving sprockets for rotating the two driving sprockets synchronously, such that left and right pedals pivotally and respectively installed between other ends of the first and second cranks and provided for pedaling by a user's legs, and when the first and second cranks drive the first and second rotating shafts to rotate, the two driving sprockets and the chain are operated together to rotate the first and second rotating shafts and the first and second cranks synchronously and drive the left and right pedals to revolve along an elliptical track with a clash-free and smooth movement, so as to achieve a smooth, comfortable and safe operation of the bicycle.

Abstract: A twisted structure for a skateboard includes a first board member having a first groove defined therein and extending therearound. A second board member is connected with the first board member. The second board member has a second groove defined therein and extending therearound. An elastic band is stretchably received in the first groove and the second groove. The elastic band encloses the first board member and the second board member for connecting the first board member with the second board member. Accordingly, the first board member is pivotally twisted related to the second board member by the elastic band.

Abstract: An improved skate car structure includes a control member installed at a frame that is provided for fixing a front pipe, an elastic restoring element installed in the control member and coupled to the frame, a positioning ear disposed separately on both sides and provided for a pivoted bolt to pivotally installing left and right support rods; a pivoted bolt installed at the frame for positioning the left and right support rods, a handlebar and a front driving wheel installed at ends of the front pipe respectively, and a rear driving wheel module installed at a rear end of the left and right support rods, swung freely and restored automatically, such that after a user stands on the left and right support rods, the user can twist his body, hip or both legs to apply forces or swing the handlebar sideway to drive the car body to slide forward.

Abstract: An apparatus including a frame; a drive wheel coupled to the frame; a first and a second foot link operably coupled to drive wheel to transfer power to said drive wheel so as to propel the apparatus, each including a foot receiving portion for receiving an operator's foot, a front end, and a rear end; and an adjustable stride length mechanism operable to change a stride length of an operator's foot positioned on the foot receiving portion of the foot link.

Abstract: An apparatus includes a frame with a pivot axis defined thereupon; a drive wheel coupled to the frame; a first and a second foot link operably coupled to the drive wheel to transfer power to the drive wheel so as to propel the apparatus, each including a foot receiving portion for receiving an operator's foot, a front end, and a rear end; and a pair of internal guide track systems coupled to the frame, each internal guide track system being operative to engage the front end of each foot link internal to the internal guide track system and to direct the front end along a reciprocating path of travel while providing retention to each foot link.

Abstract: A stepping scooter includes a scooter body for supporting a rider, a moving system, a driving system and a steering lever. The moving system includes a driving wheel rotatably connected with the scooter body, a driven wheel coaxially aligned with the driving wheel and rotatably connected with the scooter body. The driving system includes a driving arrangement pivotally connected to the scooter body, and a transmission and speeding up arrangement engaged with the driving arrangement to convert a human power applied on the driving arrangement into a rotation power to drive the moving system. When the human power is applied on the driving arrangement, the driving wheel is rotated so as to drive the driven wheel to move forward. On the other hand, the transmission and speeding up arrangement is capable of increasing a transmission velocity twice to save a physical force for the rider at the same time.

Abstract: An apparatus including a frame; a drive wheel coupled to the frame; a first and a second foot link, operably coupled to drive wheel to transfer power to said drive wheel so as to propel the apparatus, each including a foot receiving portion for receiving an operator's foot, a front end, and a rear end; and a first and a second foot link guide track, each foot link guide track operatively associated with the front end of the foot link to direct the front end along a reciprocating path of travel while providing retention to the foot link.

Abstract: A device for human conveyance includes front and rear wheels. The rear wheel interfaces to a sprocket/gear through a ratchet drive system allowing forward rotation of the rear wheel responsive to forward rotation of the sprocket/gear and allows free backward rotation of the sprocket/gear. The front and rear wheels are rotatably interfaced to a frame that keeps the front wheel at a constant distance from the rear wheel. A front end of an arc-shaped spring is affixed to the frame and a rear end of the arc-shaped spring has sprocket/gear teeth that are interfaced to the sprocket/gear whereas depression of the arc-shaped spring pushes the rear-end of the arc-shaped spring in a rearward direction with respect to the rear wheel and the sprocket/gear teeth turns the sprocket/gear in a forward rotational direction. A resilient member is disposed between the arc-shaped spring and the frame to absorb shock.

Abstract: An apparatus comprising, a paddle lever, a hinge joint, the hinge joint pivotally attached to the paddle lever, a hydraulic piston, the hydraulic piston pivotally attached to the paddle lever, a crankshaft, a piston bar, the piston bar pivotally attached to the paddle lever on a first end and to the crankshaft on a second end, a chain assembly, the chain assembly interlocked to the crankshaft, and a wheel, the wheel attached to the chain assembly by a rear axle, wherein a force pushes down the paddle lever hinged on the pivot joint, the force is transmitted to both the hydraulic piston and the crankshaft at the same time therefore rotating the wheel. A method of transportation comprising, using human force to simultaneously move a crankshaft and a hydraulic piston, whereby a wheel is rotated.

Abstract: An apparatus including a frame with a pivot axis defined thereupon, a crank arm bearing at the pivot axis; a first and a second crank arm coupled to the crank arm bearing; at least two wheels coupled to the frame, at least one of which is a drive wheel; a first and a second foot link, operably coupled to drive wheel to transfer power to said drive wheel so as to propel the apparatus, each foot link including a foot receiving portion for receiving a user's foot, a first end coupled to the frame, and a second end coupled to a respective one of the first and the second crank arms, wherein the foot receiving portion is movable along a generally elliptical path having a stride length greater than 17 inches.

Abstract: A pedal-driven scooter includes a frame, a head tube, a driving mechanism and two pedals. The pedals can move alternatingly to power the driving mechanism and making the rear wheels to roll. Therefore, a user can standing on the pedals to operate the scooter without kicking the floor as the conventional scooter.

Abstract: An improved scooter includes a frame, a front wheel, a rear wheel, a stem, a handle, left and right pedal devices, and left and right first driving devices and second driving device. The left and right first driving devices are driven by the left and right pedal devices respectively for solely or jointly driving the second driving devices, and the driven second driving devices can drive the rear wheel to rotate and roll forward, such that the front and rear wheels can jointly drive the scooter to move forward. Users can pedal the pedal device(s) by one leg or both legs alternately to operate the scooter. The scooter not only complies with the simple, smooth, power-saving, stable and safe ergonomic design, but also comes with a unique operation and driving mode and achieves the effects of providing a recreational sport with fun as well as a transportation tool.

Abstract: A bicycle according to the present invention comprises of a steering axis and an axle of rear wheel that are attached in one unit with a frame to build a form; a pair of guide members with guide holes formed therein are attached to both cut ends of the frame; a pedal axle with the attachment of pedals and a rotating gear in a unit are respectively assembled and fixed onto the guide members; the bicycle according to the present invention comprises a crankshaft of which a pair of crank cams is assembled and fixed into both cut ends of the frame; a gear which engages with the gear; and a spindle which supports a unit of the gear and a sprocket to rotate; the bicycle according to the present invention is run by a running system in which the crank cam rotates when the pedals are reciprocated up and down.

Abstract: An improved scooter includes a frame, a front wheel, a rear wheel, a stem, a handle, left and right pedal devices, and left and right first driving devices and second driving device. The left and right first driving devices are driven by the left and right pedal devices respectively for solely or jointly driving the second driving devices, and the driven second driving devices can drive the rear wheel to rotate and roll forward, such that the front and rear wheels can jointly drive the scooter to move forward. Users can pedal the pedal device(s) by one leg or both legs alternately to operate the scooter. The scooter not only complies with the simple, smooth, power-saving, stable and safe ergonomic design, but also comes with a unique operation and driving mode and achieves the effects of providing a recreational sport with fun as well as a transportation tool.

Abstract: An application for a device for human conveyance includes a front wheel and a rear wheel. The rear wheel interfaced to a sprocket through a ratchet drive system which allows forward rotation of the rear wheel in response to forward rotation of the sprocket and allows free backward rotation of the sprocket. A frame interfaces the front wheel to the rear wheel keeping the front wheel at a constant distance from the rear wheel. The front and rear wheels are rotatably interfaced to the frame. A front end of an arc-shaped spring is affixed to the frame in proximity to the front wheel and a rear end of the arc-shaped spring has a sprocket gear interfaced to the sprocket whereas depression of the arc-shaped spring pushes the rear-end of the arc-shaped spring in a rearward direction with respect to the rear wheel and the sprocket gear turns the sprocket in a forward rotational direction.

Abstract: A training toy and exercise device. A large frame supports a rear wheel and a front wheel. The front wheel is mounted in sized openings in the frame and is controlled by a handle bar. There are no pedals, chains, cranks controlling the operation of the device. A user will sit on the seat and use the user's legs to propel oneself unless the user is coasting. Under those circumstances the user's legs will rest on pegs. The device will find its primary use as a toy for small children who have not yet learned to ride a bicycle. Using this device a child can learn to ride a bicycle and balance himself on a two wheeled vehicle without concern for falling since at anytime the child's legs readily reach the ground given the vehicle's small size and low center of gravity.

Abstract: A human powered vehicle having a mechanism to run the vehicle by applying the operator's weight on at least one pedal in a reciprocating manner. The pedal moves a cranking body, which unwinds a drum. The drum is attached to at least one wheel by a directional freewheel clutch. The vehicle can also be simultaneously powered by a motor, whereas the motor takes over only when the vehicle reaches a certain speed, and automatically disengages when the vehicle slows down below a certain speed. Both the human powered and motor mechanism can operate independently without rotating any part of the other.

Abstract: The invention concerns a step board and the object of the invention is to provide a step board provided with a braking device to be stable and good in steering and propulsion performance. The step board of the invention in order to achieve the aforementioned object is characterized by comprising a first frame in which a directional caster is equipped at the front end and the back end of a main axis, respectively, a left foothold being extending left upward in the middle of the main axis in length, and a right foothold extending right upward, a second frame crossing the main axis and extending in the right and left directions, a directional caster being provided at each of the right and left ends thereof, and hinge-coupled to the first frame, and a plurality of coil springs one end of which is coupled to the first frame and the other end of which is coupled to the left and right sides of the second frame, respectively.

Abstract: A scooter having a rockable platform upon which the rider stands with both feet. The platform is attached by a chain to one-way sprocket wheels mounted to the scooter rear wheel rotating the rear wheel to propel the scooter in a forward direction as the front end of the platform moves and as the rear end portion of the platform moves down. The scooter has a position to allow the user to place one foot on the ground and one foot on the platform to propel the same.

Abstract: An improved two wheeled reciprocating pedal driven scooter has a frame including a steering assembly attached to the frame, a front steering wheel attached to a front axle attached to the steering assembly at the frame, a rear drive wheel attached to a rear axle attached to a rear portion of the frame and a drive mechanism for rotating the rear drive wheel. The drive mechanism has a pair of reciprocating foot pedals straddling each side of the frame, attached to and extending to a forward proximal hinge attachment location on the frame. Each of the foot pedals has a short portion and an intersecting long portion forming a bend at the intersection wherein an included angle ? between the short and long portions is 90 degrees or greater. The attachment location of the foot pedal to a coupling of the drive mechanism is at or near the intersection forming the bend of the short and long portions of each foot pedal.

Abstract: A scooter driving structure includes a step member pivotally coupled to a scooter platform and swingable up and down, a first driving module installed at a position corresponding to the step member and comprising a driving rod, a guide wheel, a first driving wheel, a first driving belt and a position restoring element, and at least one second driving module installed between a pivotal axle of the first driving wheel and an axle center of a rear wheel and comprising a second driving wheel, a second driven wheel and a second driving belt. The step member is pedaled to move the driving rod of the first driving module and drive the first driving belt to rotate the first driving wheel, and the coaxial second driving wheel of the second driving module drives the second driven wheel and the rear wheel to rotate through the second driving belt, so as to achieve a dual drive effect of driving a scooter to move.

Abstract: An improved portable hand powered scooter and method of operating the same is disclosed in which the rider's hands move in unison to propel the scooter forward and to steer. The scooter is slowed and stopped when the rider reverses the hand rotation. The scooter is propelled, directed, slowed and stopped using the rider's hands and is thus suited for use by those with limited lower body mobility. The drive mechanism includes a hinge assembly that permits the steering column/drive system to fold back on the scooter so as to reduce the scooter's overall height and increase the scooter's portability.

Abstract: A vehicle includes a vehicle frame, a steering rod, a pair of arm units, and a drive unit. The steering rod is coupled rotatably to the vehicle frame. Each of the arm units is coupled pivotably to the vehicle frame. The drive unit is coupled to the arm units, and is operable so as to drive pivoting movement of the arm units relative to the vehicle frame.

Abstract: A non-motorized foot board scooter including a frame, a front wheel and a rear wheel, a steering assembly, and a drive train. The drive train includes a kick arm that rotates the rear wheel when the kick arm is pushed backwards by the rider. The kick arm is centered with the rear wheel and a kick guard is located between the rear wheel and the kick arm. A first sprocket is mounted to the arm. The rear wheel has an associated second sprocket that is connected to the rear wheel via a clutch. A chain is mounted to the frame and extends around the first and second sprockets. The chain is routed such that as the arm is rotated the chain is drawn across the second sprocket thereby rotating the drive wheel.

Abstract: A drive mechanism for a vehicle propellable by muscle power is provided, wherein the drive mechanism comprises a first actuating element (104) which is moveable by a stroke along a movement path, a first driving element (211), a first gearing comprising a driving shaft (107), and first returning element (212), wherein the first driving element (211) is coupled between the first actuating element (104) and the driving shaft (107) in such a way that actuating element stroke induces a movement of the driving shaft in a first direction, and wherein the returning element (212) is coupled between the first actuating element (104) and the driving shaft (107) in such a way that it induces a movement of the driving shaft in a second direction opposite to the first direction.

Abstract: A tricycle includes a head tube with a post connected to a first end thereof and a front wheel is connected to a lower end of the head tube. A handle is foldably connected to the post. Two swing links pivotably connected to the head tube by a front wheel seat on the head tube and each swing link includes a footboard and a rear wheel connected to each of the footboards. Two pedals are pivotably connected to the two footboards and each pedal is cooperated with a driving unit which includes a rotary unit and driving unit. The rotary unit is activated by pressing the pedal and the driving unit can only drive the rear wheel in one direction. The user holds the handles and steps on the footboards, by twisting his or her body, the tricycle moves forward as conventional tricycle. By alternatively pressing the pedals, the rear wheels accelerate by the driving unit such that the tricycle can move faster. The handles, the two swing links and the pedals are foldable to make the tricycle be compact size.

Abstract: An apparatus includes a frame with a pivot axis defined thereupon; a drive wheel coupled to the frame; a first and a second foot link operably coupled to drive wheel to transfer power to said drive wheel so as to propel the apparatus, each including a foot receiving portion for receiving an operator's foot, a front end, and a rear end; and a pair of internal guide track systems coupled to the frame, each internal guide track system being operative to engage the front end of each foot link internal to the internal guide track system and to direct said front end along a reciprocating path of travel while providing retention to each foot link.

Abstract: A foldable steering column of vehicle including a steering member with a steering fork. The foldable steering column includes a base coupleable to the steering fork; a steering tube pivotally coupled to the base between at least a first position aligned with the base and second position not aligned with the base; and a sleeve operably associated with the base and the steering tube for positioning between a first position where the steering tube is secured to and aligned with the base and a second position where the steering tube is free to pivot relative to the base.

Abstract: An apparatus including a frame; a drive wheel coupled to the frame; a first and second foot link operably coupled to drive wheel to transfer power to said drive wheel so as to propel the apparatus, each including a foot receiving portion for receiving an operator's foot and a retention mechanism for retaining the operator's foot on the foot receiving portion of the foot link.

Abstract: An apparatus including a frame with a pivot axis defined thereupon, a crank arm bearing at the pivot axis; a first and a second crank arm coupled to the crank arm bearing; a front wheel and a rear wheel coupled to the frame, the rear wheel including a rear wheel axle; a first and a second foot link, operably coupled to drive wheel to transfer power to said drive wheel so as to propel the apparatus, each foot link including a foot receiving portion for receiving a user's foot, a first end coupled to the frame, and a second end coupled to a respective one of the first and the second crank arms, wherein the crank arm bearing is located rearward of and above the rear wheel axle.

Abstract: A four wheeled, human-powered, striding cycle that uses the stepping and striding motion of the human legs to propel a rider forward. Two separate and dependent foot pedals are moved fore and aft along a concaved arc segment. The motion simulates the natural stepping and striding motion of a running human. A standing human steps on a pedal, then moves it down and aft in a striding motion. As one pedal is moved aft, the other pedal moves forward in a reciprocating fashion. A cable and pulley system connects each pedal with its respective rear wheel. Pedal motion aft applies torque to its respective drive shaft which in turn rotates its respective drive wheel. Pedal motion forward also provides torque to the opposing drive shaft creating additional torque for the opposite wheel. Forward motion begins when force is exerted down and aft on each pedal by the stepping and striding motion of the human leg.

Abstract: The present invention provides a scooter with driving mechanism comprising a scooter assembly and at least a driving mechanism, wherein the scooter assembly has a treadle and a rear wheel; the driving mechanism comprises a reset device and a transmission device, which has an irreversible transmission unit and a passively driven gear, wherein the passively driven gear is driven by the driving gear in meshed manner to drive the irreversible transmission unit in relay way, the irreversible transmission unit, which is connected to the rear wheel, is served to drive the rear wheel to rotate in single direction. Thus, by means of the treading and releasing actions with the treadle, the scooter can be driven smoothly with benefits in not only the risk of tumbling down accident being avoided but also the effects in energy-saving and environmental protection being achieved.

Abstract: A mini bike for strengthening a leg muscle, and for enjoying amusement and a leisure time is provided. The mini bike having a pedal as a power generator includes: a driver having a first bevel gear in order to transmit rotation power generated by a rolling motion of a pedal; a second bevel gear installed to transmit rotation power generated in the driver; a first power transmission gear coaxially installed in the second bevel gear to transmit rotation power to a spline shaft; a clutch positioned at the spline shaft to selectively connect rotation power of the first power transmission gear to a first gearshift and a second gearshift and for controlling a low speed and a high speed; a first driving gear and a second driving gear for rotating by selection of the clutch; and a driving controller including a gearshift in which the clutch is connected to the cable in order to select the first gearshift and the second gearshift.

Abstract: An apparatus including a frame; a drive wheel coupled to the frame; a first and second foot link operably coupled to drive wheel to transfer power to the drive wheel so as to propel the apparatus, each including a foot receiving portion for receiving an operator's foot, where each foot receiving portion allows for at least two repeatable foot positions for the operator's foot.