Abstract: A vehicle propellable by a human comprising a front assembly having a front wheel and a pair of hand pedals connect thereto; a rear assembly having a first rear wheel and a second rear wheel rotatably connected thereto; a chest rest located between the front assembly and the rear assembly, the chest rest configured to support the chest of a rider lying forward on the vehicle; and a first foot support structure operatively coupled to rotate the first rear wheel, and a second foot support operatively coupled to rotate the second rear wheel wherein the first rear wheel and second rear wheel are independently rotated by opposite feet of a rider when said feet are within said first and second foot support, respectively.

Abstract: A gear mechanism is provided, having a gear arrangement, and a spindle arrangement to support the gear arrangement, the spindle arrangement having first, second, third and fourth spindles. The gear arrangement, of concentric gears only, that includes a first gear set mounted on the first and fourth spindles and arranged to be driven via a first pedal, a second gear set mounted on the second and fourth spindles and arranged to be driven via a second pedal, and a third gear set mounted on the third and fourth spindles, wherein, for each of the first and second gear sets, the gear set is configured to be alternately driven, via the corresponding pedal being rotated through less than 180°, in a power stroke to drive the third gear set, and, advanced, via the corresponding pedal being rotated through more than 180°, in a return stroke to commence a subsequent power stroke.

Abstract: The Compound Torque Multiplying Lever Propelled Bicycle uses two force multiplying machines to generate a large amount of torque to be applied directly to the sprocket of the rear wheel. This machine uses a lever machine as a means of mechanical advantage and a two gear combination machine as a means of mechanical advantage. In this configuration, the input gear is always larger than the output gear or sprocket. Furthermore, because the load of each lever machine is moved away from the fulcrum and closer to the pedals, less material is needed to reinforce the lever machines from the inside; thus, they are lighter. Furthermore, because the sprockets used to increase torque and range are smaller in diameter, they are then lighter, which would result in a bicycle that is lighter, having consistent increased torque from pedal peak to pedal base with a substantial amount of range.

Abstract: A device for bicycles or other pedal-powered vehicles is fitted with at least one crank that has a pedal at one end and a crank box on the other. The crank box is fitted with a flute and contiguous to a fixed structure fitted with a pin. The movement of the crank is limited by the pin's movement in the flute. The crank box has a torsion spring nested within it. The device is fitted with a braking mechanism of the crankshaft's sprockets, in that these sprockets engage with sprockets of a transmission box, connecting the transmission box to the toothed shaft's box. The sprockets of the transmission box, in turn, transmit their movement to the outer shaft.

Abstract: A bicycle bottom bracket assembly that reduces the accumulation of dirt and/or corrosive substances inside the shaft extending between the crank arms of the assembly. The bottom bracket assembly includes a shaft having a through-cavity that extends along its longitudinal direction; a crank arm is associated with each end portion of the shaft, and the through-cavity extends unobstructed through the crank arms and the shaft.

Abstract: A bicycle equipped with two, oscillatingly mounted on a joint axis (1), rear-facing levers (2) with pedals (3) and a rotary-return mechanism comprising a hub (9), bearing-placed on an axis (8), on which fixed are two freewheels (6) cooperating with levers (2) and a third chainwheel (10) transmitting the drive through the chain (13) and sprocket (14) onto the bicycle's drive wheel (15). To each of the levers (2) attached is rotatively on an axis (5) one end of one of the two chains (7) which connect these levers (2) with one of the two freewheels (6), and the other ends of these chains (7) are mutually joined with a chain (11) run on a reversible chainwheel (12). The lever (2) together with a part of the chain (7) in the upper extreme position of the pedal (3) is tangent to one of the two freewheels (6), and the second lever (2) in the bottom extreme position of the second pedal (3) is in a near-vertical position.

Abstract: A non-motorized scooter comprising a frame carrying a front wheel assembly, a rear wheel assembly, and a handle bar assembly operatively associated with the front wheel assembly; a first lever arm pivotally mounted on the frame; a second lever arm pivotally mounted on the frame adjacent the first lever arm, wherein the first and second lever arms move up and down in a lever action and define a rider platform; a drive unit operatively connected to the first and second lever arms and the rear wheel assembly so that the up and down lever action turns a rear wheel; and, a detent lock releasably securing the first and second lever arms to the frame to resist the up and down lever action of the lever arms until the detent lock is released.

Abstract: A bicycle bottom bracket assembly that reduces the accumulation of dirt and/or corrosive substances inside the shaft extending between the crank arms of the assembly. The bottom bracket assembly includes a shaft having a through-cavity that extends along its longitudinal direction; a crank arm is associated with each end portion of the shaft, and the through-cavity extends unobstructed through the crank arms and the shaft.

Abstract: A bicycle equipped with two, oscillatingly mounted on a joint axis (1), rear-facing levers (2) with pedals (3) and a rotary-return mechanism comprising a hub (9), bearing-placed on an axis (8), on which fixed are two freewheels (6) cooperating with levers (2) and a third chainwheel (10) transmitting the drive through the chain (13) and sprocket (14) onto the bicycle's drive wheel (15). To each of the levers (2) attached is rotatively on an axis (5) one end of one of the two chains (7) which connect these levers (2) with one of the two freewheels (6), and the other ends of these chains (7) are mutually joined with a chain (11) run on a reversible chainwheel (12). The lever (2) together with a part of the chain (7) in the upper extreme position of the pedal (3) is tangent to one of the two freewheels (6), and the second lever (2) in the bottom extreme position of the second pedal (3) is in a near-vertical position.

Abstract: The present invention provides a propulsion assembly for a bicycle. The propulsion assembly includes a support member that at least extends from the bicycle frame to a distal end spaced-apart from the rear wheel. The assembly includes a first drive mechanism rotatably mounted on the frame and axially connected to the rear wheel for transmitting motion thereto. A second drive mechanism is rotatably mounted at the distal end of the support member and coupled with the first drive mechanism. Ratchet mechanisms axially extend from the second drive mechanism and connect to a pair of elongate members. The bicycle has pedal arms with pedals extending therefrom. The elongate members are pivotally, operatively connected to the pedals. The pedals with pedal arms are movable in a circular manner for transmitting rotational power to the elongate members for propelling the bicycle.

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 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: A multi-speed system configured to increase the speed or decrease the pedaling effort of a lever propelled bicycle. The multi-speed system is composed of a manual control device 70, mounted on the frame close to the rider's hand placement on the handle bars, and other connected components configured to change wheel rotation per pedal. It has the ability to transfer manual force to the transmission means to change propulsion speed and effort. Depressing a control lever 2 down will allow the rider to increase in speed and lifting the control lever 2 up would allow the rider to decrease pedaling effort.

Abstract: The improved chainless drive of the present invention features a four speed planetary transmission housed within the hub of the driving wheel of an utility tricycle, and an vehicle frame which provides two options for delivering power to the transmission. In the first option the drive shaft, which extends out through bearings on the center line of the driving wheel, has a crank arm fixed on each end. A spindle is fixed in the end of each crank arm and a pedal beam is rotatably mounted near its center on each spindle. A cam roller mounted on each pedal beam near its aft end engages a short length of steel track fastened on the sides of a trunk bolted on the at end off the tricycle frame. The cam roller provides a downward force to counter balance the weight of the rider on the cantilevered forward end off the pedal beam increasing the force on the spindle and thus amplifying the torque delivered to the drive shaft.

Abstract: A bicycle stepping apparatus to increase the moment of force and save manual stepping labor has a stepping means located between a sprocket and a crank of a bicycle. The stepping means has a socket wrench which has a hub on one end with ratchet teeth formed thereon to house a flywheel. The flywheel has a gear engageable with the hub. The axis of the flywheel is coupled on the axle of the sprocket and fastened by a nut. The socket wrench has another end opposite to the hub that has an elongate sliding track formed on the bottom side to slidable hold a pair of first bearings of an auxiliary bar. The auxiliary bar has a steel ring on the bottom end with a pair of second bearings coupled on two sides to allow a shaft of a pedal to run through. The socket wrench can increase the moment of force to save manual stepping labor.

Abstract: The invention is an improved lever drive arrangement for human powered machines. Independent levers are connected directly to a primary drive arrangement positioned behind the rider comprised of one-way clutch/s connected to a common shaft connected to a sprocket that drives by chain a series of two reductions called a secondary drive arrangement and a tertiary drive arrangement prior to engaging the final drive element. The positioning of the primary drive arrangement behind the rider better enables upright riding by a person and better enables increases in lever length thereby increasing mechanical advantage is possible for producing greater torque to drive larger or multiple reductions. The independent lever arrangement allows a rider to deviate from the traditional opposing circular or up and down cadence of the rider's limbs making possible a variety of limb pumping movements by one or more limbs.

Abstract: The pedal drive mechanism comprises a pedal arm immovably affixed across the secant of a drive gear, with the drive gear and attached pedal arm rotating through a partial revolution during operation. The drive gear meshes with a smaller pinion gear installed concentrically on the drive wheel axle. The pedal arm extends generally upwardly in its initial position prior to actuation of the mechanism, with operation requiring a rearward and downward kick or push. This is a natural motion for the operator of a scooter type vehicle, and the downward force also transfers a greater force to the drive wheel(s) for better traction during starting and operation. A return spring rotates the pedal arm, drive gear, and pinion gear back to their original starting positions when pressure is released on the pedal, with a one-way clutch disengaging the pinion gear from the drive wheel(s) during the pedal return stroke.

Abstract: A reciprocal upward and downward pedaling bicycle structure includes a main shaft of a free wheel at a chain wheel shaft, a driving body pivotally coupled to a frame of the main shaft, a pedal crank and a support rod on the driving body, and a driving belt linked to the main shaft and the support rod. An end of the driving belt is dragged to the frame by a resilient element. By the action of the resilient element ands the rotation of the main shaft, the crank and pedal are pulled by the driving belt to provide an upward bounce and the chain wheel drives the rear wheel shaft through the main driving belt. When the pedal is stepped downward, the main shaft and the chain wheel are rotated synchronously to drive the rear wheel of the bicycle to move forward.

Abstract: A drive system for use with a bicycle includes first and second gears arranged so that the second gear is rotatably driven responsive to the first gear. A freewheel is operatively coupled to the second gear, and a drive sprocket is operatively coupled to the freewheel. The freewheel causes the drive sprocket to be rotatably driven only when the first gear is driven in either the first direction or the second direction. A driven sprocket may be mounted coaxially and in driving relationship with a wheel of the bicycle. A chain may be used for linking the drive sprocket and the driven sprocket. First and second levers extend from a support bar, which is coaxially mounted to the first gear. Reciprocal movement of the first and second levers causes the first gear to rotate, and correspondingly causes the second gear to rotate, thereby effecting rotation in the drive sprocket and the driven sprocket.

Abstract: The invention is an improved lever drive arrangement for human powered machines. Independent levers are connected directly to a primary drive arrangement positioned behind the rider comprised of one-way clutch/s connected to a common shaft connected to a sprocket that drives by chain a series of two reductions called a secondary drive arrangement and a tertiary drive arrangement prior to engaging the final drive element. The positioning of the primary drive arrangement behind the rider better enables upright riding by a person and better enables increases in lever length thereby increasing mechanical advantage is possible for producing greater torque to drive larger or multiple reductions. The independent lever arrangement allows a rider to deviate from the traditional opposing circular or up and down cadence of the rider's limbs making possible a variety of limb pumping movements by one or more limbs.

Abstract: A bicycle stepping apparatus to increase the moment of force and save manual stepping labor has a stepping means located between a sprocket and a crank of a bicycle. The stepping means has a socket wrench which has a hub on one end with ratchet teeth formed thereon to house a flywheel. The flywheel has a gear engageable with the hub. The axis of the flywheel is coupled on the axle of the sprocket and fastened by a nut. The socket wrench has another end opposite to the hub that has an elongate sliding track formed on the bottom side to slidable hold a pair of first bearings of an auxiliary bar. The auxiliary bar has a steel ring on the bottom end with a pair of second bearings coupled on two sides to allow a shaft of a pedal to run through. The socket wrench can increase the moment of force to save manual stepping labor.

Abstract: A pedal lever type bicycle includes a pedal lever having a front portion and a rear portion, with an intermediate pivot point located substantially above the center of the rear wheel, and to the rear of the front of the rear wheel. The rear portion of the pedal lever has dog-leg configuration with a slider that is attached to a drive chain. The slider is mounted on a straight section of the rear portion of the pedal lever which extends slightly above and to the rear of the rear wheel hub, so that the chain exerts a force to move the slider outwardly on the rear portion of the pedal lever when it is in a lower position, and in the opposite direction when it is raised. Changes of mechanical advantage of 3 or 4 to 1 are available with this configuration of the pedal lever. The bicycle incorporates positive intuitive gear controls and quick release mechanisms for all major components of the propulsion system.

Abstract: An improved electrically assisted bicycle has rear wheel, right and left, propulsion elements, each side having a modified freewheel that carries a hand operated electromagnetic-mechanical pawl, deployed along a pedal bar by a tape connected to a pawl positioning control box lever, a freewheel wheel with radian oriented grooves in its inboard face, and the equivalent of a motor back plate on its outboard face, said grooves being compatible with a ratcheting motion by said pedal bar pawl, said back plate supporting an electric motor's field coils, current rings, and motor brushes, that collectively compliment a motor armature, commutator, and current ring brushes, where wheel ratcheting torque is applied to one side, and motor torque to the other, said bicycle also having a battery, a controlling rheostat, and a pedal actuated circuit current on/off switch, so that a rider can manually deploy ratcheting pawls to selected pedal leverage points on said wheel, while combining therewith, mixed-in applications of v

Abstract: Apparatus and methods are disclosed for a human-powered vehicle. The vehicle can be a two-wheel, recumbent-style vehicle. The vehicle can be readily disassembled for ease of transport.

Abstract: This invention relates to a cycle, such as a bicycle, having reciprocal pedal levers for propelling at least one wheel of the cycle. The cycle has a frame that includes a rack, a left pedal lever with a rack and a right pedal lever with a rack. A pinion is carried on the frame with the pinion in simultaneous engagement with the racks on the frame and the pedal levers. A plurality of bearings are mounted around the pinion comprising at least a first bearing providing rotation between the pinion and the frame, a second bearing providing rotation between the pinion and the right pedal lever, and a third bearing providing rotation between the pinion and the left pedal lever.

Abstract: A drive mechanism for bicycles or similar exercise equipment in which the left and right pedals move generally up and down in a vertical plane. The pedals slide on vertical slide bars from their top to bottom positions. The pedals are connected by a pedal chain that engages and rotates a sprocket. The sprocket is in turn connected through a drive shaft to a pair of drive gears. The drive gears are mounted to the drive shaft by means of one way clutches. A reversing bevel gear is mounted between both drive gears to produce a driving output force that is transmitted to the rear drive wheel regardless of whether the left or right pedal is pushed from its top to bottom position. In an alternate embodiment the drive mechanism is adapted for use on a recumbent bicycle and the pedals move in a horizontal plane.

Abstract: The present invention provides an easy turning and highly accurate personal vehicle. This is accomplished by providing a frame with at least one hubless wheel, wherein the passenger's foot may be contained. As such, the foot may accurately and safely steer and at the same time provide support. According to a preferred embodiment, there may be a frame, a first wheel with a first foot support in a center portion and a second wheel with a second foot support in a center portion. Also, there may be a human powered drive mechanism that allows the foot to be in the center portion of the wheel and yet still capable of providing human power to the personal vehicle. In this way a human powered, stable, highly accurate and fast personal vehicle is achieved as never previously accomplished within the art.

Abstract: A rolling foot-powered apparatus mounted for movement on rotatable rollers and including at least one upper movable assembly, a lower stationary assembly, and at least one motion-conversion mechanism or an alternatively retractable motion-conversion mechanism. The movable assembly, which is provided with mounted means for movement therewith, and the lower stationary assembly, are cooperatively associated one with another and with the assistance of the motion conversion mechanism or alternatively retractable motion-conversion mechanism are operative such that an oscillating motion of the movable assembly or alternatively a linear motion of the movable assembly is converted either to a continuous circular motion of the rotatable shaft or alternatively to the rotatable rollers for the purpose of imparting a continuous linear motion of the rolling foot-powered apparatus.

Abstract: An occupant propelled vehicle is provided that includes a frame having a front portion and a rear portion, front and rear wheels, a platform, a steering mechanism and a drive mechanism. The drive mechanism may include a drive sprocket mounted on the frame, a driven sprocket, an endless chain provided around the drive sprocket and driven sprocket, and a pedal for an occupant to drive the drive sprocket and propel the vehicle in a forward direction.

Abstract: A scooter propulsion system is provided both as a kit for retrofitting and as an improved original manufacture. A foot pedal pivots forwardly and rearwardly as the user presses on a front foot pedal portion and rear foot pedal portion, respectively. A ratchet bar is pulled forward when the front pedal portion is pressed and rearward when the rear pedal portion is pressed. A free-wheeling sprocket-like gear on the rear wheel axle is rotated forward by rack-like ratchet bar teeth when the ratchet bar is pulled forward thus engaging spring pawls of the rear wheel axle gear with a rear wheel hub. A ratchet bar guard biases the ratchet bar against the rear wheel axle gear. When the rear pedal portion is pushed the rear wheel axle gear freewheels backwards as the ratchet bar moves rearwardly. A smooth portion of the ratchet bar rests against the rear wheel axle gear when the rear pedal portion is pressed to its down position.

Abstract: An occupant propelled vehicle is provided that includes a frame having a front portion and a rear portion, front and rear wheels, a platform, a steering mechanism and a drive mechanism. The drive mechanism may include a drive sprocket mounted on the frame, a driven sprocket, an endless chain provided around the drive sprocket and driven sprocket, and a pedal for an occupant to drive the drive sprocket and propel the vehicle in a forward direction.

Abstract: The present invention relates to a manually powered vehicle, such as a child's ride-on toy. The vehicle is powered by a rocking, or up-and-down, motion of the rider. The rocking motion is mechanically translated into a force for propelling the ride-on vehicle via one or more ratcheting levers. The vehicle has two front, driven wheels and a single, rear steerable wheel.

Abstract: A scooter propulsion system is provided both as a kit for retrofitting and as an improved original manufacture. A foot pedal pivots forwardly and rearwardly as the user presses on a front foot pedal portion and rear foot pedal portion, respectively. A ratchet bar is pulled forward when the front pedal portion is pressed and rearward when the rear pedal portion is pressed. A freewheeling sprocket-like gear on the rear wheel axle is rotated forward by rack-like ratchet bar teeth when the ratchet bar is pulled forward thus engaging spring pawls of the rear wheel axle gear with a rear wheel hub. A ratchet bar guard biases the ratchet bar against the rear wheel axle gear. When the rear pedal portion is pushed the rear wheel axle gear freewheels backwards as the ratchet bar moves rearwardly. A smooth portion of the ratchet bar rests against the rear wheel axle gear when the rear pedal portion is pressed to its down position.

Abstract: A scooter-like bicycle having a simple labor-saving power transmission mechanism is provided. The mechanism comprises a clockwise gear, a crank, and two pedals each having one end coupled to main frame and the other end coupled to a bearing. The bicycle moves as rider pushes pedals in a reciprocating motion. Torque of the bicycle is a total length consisting of the length of crank and the length of most portions of pedal times a force exerted on pedals. Hence, it may lessen physical labor. Further, in use total weight of rider is exerted on pedals since rider is at a standing position. This can save the physical labor of legs. Furthermore, there is no restriction on the wearing of rider.

Abstract: A propelling scooter includes a chassis, a front wheel steerably attached to a front end of the chassis, a rear wheel rotatably attached to a rear end of the chassis and an elongated pedal disposed longitudinally above the chassis. The pedal has a backward end and a forward end. The pedal is pivotally connected to the chassis between the ends thereof and is adapted to sway relative to the chassis. A first shaft laterally extends through and is rotatably supported on the chassis. The scooter further includes a driving pulley securely mounted around the first shaft, a driven pulley securely attached to a center of the rear wheel, and a primary flexible drive piece reeved around the driving pulley and the driven pulley to transmit rotation from the first shaft to the rear wheel such that the scooter may move forward when the first shaft is rotated relative to the chassis in a correct direction.

Abstract: A propelling scooter includes a chassis, an upright head tube with a handle, a front wheel, and a rear wheel. An elongated pedal is disposed swingably on the chassis. A horizontal transverse first shaft is journalled on the chassis, and is connected fixedly to the pedal, thereby permitting rotation of the pedal about the first shaft. When the pedal is swung, a transmission gearing unit transfers rotation of the first shaft to a driving wheel, which in turn rotates the rear wheel via a flexible endless drive piece. As such, reciprocal rotation of the first shaft is converted into continuous unidirectional rotation of the rear wheel.

Abstract: A bicycle transmission assembly comprises a gear shifting device and a reciprocating pedal device that are mounted to a bicycle frame. The reciprocating pedal device comprises a reverse gear train consisting of a first reverse gear and a second reverse gear to make two pedal rods move horizontally and reciprocatingly. Swaying movements of the pedal rods drive a single direction gear mechanism. The gear shifting device comprises a first idler gear and a second idler gear that are meshed with each other. A follower gear and the first idler gear are coaxially mounted with each other. The follower gear is connected to a single direction gear of the reciprocating pedal device via a transmission element. Pivotal movements of a gear shifting lever cause rotational movements of the carrier member such that the first idler gear or the second idler gear is meshed with a transmission gear to thereby drive the wheels of the bicycle.

Abstract: The present invention provides an economical, universal wheelchair conversion kit which offers two, hand-powered, variable-resistive, drive mechanisms for the main wheels of a wheelchair which can be retrofitted to existing wheelchairs and that provide the operator of the vehicle means of easy mobility, independent brakes for safety and maneuverability, and the resistive means for exercising the upper body musculature and the cardiovascular systems while using the chair in either a mobile or stationary configuration. The present invention enables the elevation of the wheelchair rear wheels such that the wheelchair is dedicated to an exercise function. In all, the present invention provides a comprehensive solution to the mobility and immobility health related problems of many wheelchair bound persons.

Abstract: A treadle-type vehicle body forward drive structure comprised of a base plate, a transmission assembly and a treadle structure installed onto the base plate, a gear assembly enmeshing the transmission assembly to the treadle structure, and a position limiting plate that maintains the position of the drive structure on the base plate, with the extending ends of the transmission assembly follower shaft installed to the wheel hubs of the vehicle body rear wheels. When the treadle rod is tamped slightly downwards, a slant-cut fan gear of the treadle structure causes a slant-cut gear and a straight-cut gear of the gear assembly to synchronously rotate, at which time since the straight-cut gear of the gear assembly is enmeshed with a straight-cut gear of the transmission assembly, they in combination cause the rotation of the follower shaft and, furthermore, the synchronous rotation of the rear wheels. As such, the user is provided riding pleasure and options.

Abstract: The present invention relates to a geared scooter comprising a deck assembly, a handlebar, a front wheel assembly and a rear wheel assembly. The front wheel assembly and the rear wheel assembly are arranged at front and rear ends of the deck assembly. The handlebar is pivotably disposed at the front end of the deck assembly and pivotably connected to one end of the coupling mechanism while the other end of the coupling mechanism is mounted on the drive mechanism of the rear wheel assembly. The drive mechanism is pivotably mounted on the rear wheel assembly in one body. In swinging the handlebar, the rear wheel assembly is driven with the drive mechanism by the coupling mechanism to create a forward power.

Abstract: A pedaled propulsion system has left and right foot pedals that travel up and down on roller slides on track members mounted on the bicycle frame. An endless drive web passes between the pedals and loops around a driven wheel at one end of the track assembly, and around an idler at the other end of the track assembly. The driven wheel is mounted on the input shaft of a unidirectional transfer arrangement. The transfer arrangement has an aluminum block case or housing, and an input shaft which has a bevel pinion gear on it that meshes with left and right driven bevel gears. These bevel gears each are mounted to an output shaft by means of unidirectional clutch bearings inside the bevel gears. Each bevel gear drives in one direction and idles in the other direction. As the input shaft oscillates back and forth, the output shaft continues to rotate in the same direction. A sprocket wheel can be mounted on the output shaft to power a chain drive or a shaft drive.

Abstract: A treadle cart, having two axles, each axle having one of two pairs of wheels mounted on it, the treadle cart being powered by the pivoting motion of a treadle board which transfers the power from the pivoting of the treadle board through a drive means including a flexible elongated member with two ends that is attached to the under side of treadle board, each of the drive means rotating a power wheel which through a drive train turns a clutch housing, each clutch housing having a clutch rotor mounted in it, each of the pair of clutch rotors alternating in transmitting power to the base wheels of the treadle cart.

Abstract: The present invention relates to a self propeller skateboard (10) comprising upper deck (12A) pivotally mounted on a drive shaft (22) having a left drive wheel (18L) securely fastened at a left distal end and a right drive wheel (18R) securely fastened at a right distal end. The drive shaft (22) is mounted in a transmission (14) which is self propelled by a user by shifting his weight from an upper deck front (12AA) to an upper deck back (12AB) and vice-versa. When the upper deck front (12AA) is raised, a front cable (26F) is unwinded from the drive shaft (22) by rotation thereof. The drive shaft (22) is further rotated when the upper deck rear (12AB) is raised, a rear cable (26R) is unwinded from the drive shaft (22).

Abstract: A Pedal mechanism for a bicycle or similar piece of exercise equipment is disclosed which allows one to apply a forward force to the drive wheel by simultaneously pressing down on both pedals of the bicycle. The pedals are positioned parallel to one another extending in the same direction from the pedal shaft. The pedalling motion of the invention can be performed with the pedals positioned pointing towards the front of the bicycle or with the pedals pointing towards the rear of the bicycle. The pedalling motions are referred to as a hopping or kangaroo stroke.

Abstract: The invention discloses a pedal mechanism for a bicycle or a piece of exercise equipment which allows one to impart forward motion to the drive wheel of the bicycle through an alternating or stair climbing pedalling motion. The downward force of one of the pedals causes the other pedal to move in the opposite direction. Depending on the position of the pedals, many different pedalling patterns are possible.

Abstract: A bicycle mechanism to permit a forward force to be applied to the bicycle's drive wheel by backward rotation of the bicycle's pedals in addition to permitting a forward force to be applied to the drive wheel by a forward rotation of said pedals. A preferred embodiment allows one of the pedals to be rotated in one direction while the other pedal rotates in the opposite direction.

Abstract: A self-propelled vehicle includes a frame having a pair of foot treadles mounted in side-by-side relation and depressible with respect to the frame; an overrunning clutch for each of the foot treadles and having a drive member coupled to its respective foot treadle and a driven member coupled to the drive wheel; and a planetary gear assembly for each of the overrunning clutches for coupling the drive member to the respective foot treadle such as to multiply, by a factor of at least two, the displacement of the clutch driven member by its respective foot treadle.

Abstract: A human powered vehicle is disclosed. The vehicle includes a frame with the capability for supporting an operator one the frame. The vehicle further includes a drive wheel mounted for rotation to the frame, and a mechanism powered by the drive wheel to propel the vehicle. A device is also provided for rotating the drive wheel to operate the power mechanism. A pedal lever arm is mounted to the frame for reciprocating movement between first and second positions, and a cam member is operatively secured to the frame and said pedal lever arm for pivotal oscillating movement in response to reciprocal movement of the lever arm. Finally, a linkage couples the cam member with the drive wheel rotating device and is mounted for longitudinal reciprocating movement relative to the length of the frame in response to the oscillating movement of the cam member to operate the drive wheel rotating device.

Abstract: A drive apparatus and method for continuously transmitting power to an axle to rotatingly drive the axle are disclosed. The drive apparatus includes a flexible ratch such as a flexible chain, belt, or cable, and cooperating first and second ratch engaging members for alternatively engaging the flexible ratch to continuously drive an axle. To operate the apparatus, one moves the first and second ratch engaging members in a first direction which causes the first ratch engaging member to engage and drive the flexible ratch which rotatingly drives the axle. One then reverses the ratch engaging members' direction of movement which causes the simultaneous releasing and engaging of the ratch by the first and second ratch engaging members, respectively, which continuously drives the axle.

Abstract: A self-propelled vehicle includes a pair of foot treadles mounted in side-by-side relation, and an overrunning clutch for each foot treadle. Each foot treadle is mounted to the frame by a four-link parallelogram retaining the respective foot treadle substantially parallel to the longitudinal axis of the vehicle frame as the foot treadle is driven downwardly by the operator's foot and is returned upwardly by springs.