Abstract: A lever propelled bicycle providing elements allowing it to have significant performance, friction reduction, standard bicycle weight and a wide range of downward pedal to rear wheel turn ratio due to the following mechanical configurations: These include, a drive axle and reciprocal axle elevated near each other to keep the frame upon which these components rest on, narrower in side width or surface area; the fulcrum of the propulsion levers in front of the rear wheel axle and pedals in conventional ergonomic positions to provide a force multiplying machine with above average torque; and a reciprocal means utilizing two pulley wheels to carry an adaptable linear apparatus over their upper and outfacing surfaces for the purpose of transferring the downward pull of the linear apparatus by the right lever machine to lift the left lever up in a vertical 90 degree pivotal motion and vice versa, resulting in a smooth transfer of reciprocal power with reduced friction and weight.

Abstract: A crank arm for a bicycle chainset is provided. The arm comprises means for varying crank length during rotation, whereby to gain mechanical advantage.

Abstract: Vehicle including a frame, a seat mounted to the frame, wheels rotatably mounted on the frame, and drive mechanisms for causing rotation of one wheel. Each drive mechanism includes an arm pivotally attached to the frame at one end, a weight and attached pedal at an opposite end of the arm, and a guide member including a bump and that moves in conjunction with movement of the weight. The guide member has a first end region at which the guide member is pivotally attached to the frame and a second, opposite end region which is free. A roller attached to the arm moves along the guide member during pivotal movement of the arm to cause pivoting of the guide member as the roller engages with the bump. An energy transfer system converts pivotal movement of the guide member into motive power to rotate the wheel.

Abstract: An electronics and/or gearing housing, in particular for a worm wheel of a window lifting drive, of a motor vehicle is provided. The electronics and/or gearing housing has a housing body, within which an electronic assembly is arranged, and a cover, which is joined to the housing body via ultrasonic welding.

Abstract: An easy-pedaling and labor-saving bicycle includes a frame, a front and a rear wheel set, a transmission set driving the rear wheel set, and a pedal device driving the transmission set. The pedal device includes a crank disposed on the frame, a link-up member driving a rear link-up plate to rotate, a link-up strip disposed between one end of the crank and the link-up member, a pedal unit disposed at the other end of the crank, and a straining member disposed between the frame and the link-up strip. Pedaling the pedal unit makes the crank set as an extension of a moment arm for increasing a force moment imparting to the transmission set. The crank swings downward easily to allow the other end thereof to pull the link-up strip, whereby the link-up member, the transmission set, and the rear wheel are driven to pedal easily, save labor and drive quickly.

Abstract: The present invention relates to a roller board, and more particularly, to a pedal-driven roller board that converts a reciprocating motion of pedals formed on the board into a rotational motion to drive a gear, so that a user can drive the board without kicking the ground. Furthermore, the pedal-driven roller board includes a derailleur, so that a user can conveniently control the speed of the pedal-driven roller board. Moreover, a user can develop and strengthen his/her muscles by pedaling the pedal-driven roller board. To this end, a pedal-driven roller board according to the present invention includes: a handle disposed at the front side of a board to steer a front wheel; a rear wheel at the rear side of the board; and two pedals formed on the top surface of the board to drive the rear wheel.

Abstract: The invention relates to a multiple speed planetary gear hub for a stepping motion lever propelled bicycle, tricycle or vehicle. The planetary gear hub consist of two or more planetary gear sets mounted in series rotatable around a drive shaft, and a speed selector or control device to select the desired gear ratios.

Abstract: The present invention is an improved drive system for a personal vehicle comprising: a frame with a steerable front wheel and rear wheel connected to a drive axle connected to a crank arm by a drive linkage; a roller rotatably attached to the crank arm; a pedal pivotally attached to the frame having a cavity for receiving the roller; a contoured wear bar carried by the cavity for contacting the perimeter of the roller; a major arch included in the contoured wear bar contacting the roller when the pedal is on a down stroke; a minor arch included in the contoured wear bar for providing additional power when the pedal is near the end of its down stroke; and, a major front slope included in the wear bar for contacting the roller when the pedal is in its upstroke to place the pedal at its highest most position.

Abstract: A leisure fitness bike has a front frame hinged to a rear frame, a handlebar and a front wheel. A pedal body is installed at upper and lower ends of the front frame. The rear frame includes a saddle, a rear wheel and a rear wheel transmission device. A driving device is between the front and rear frames and coupled to a rear wheel transmission device. After a rider sits on the saddle and puts both hands and legs onto the handlebar and the pedal body, the front frame is moved forward and backward by stretching and contracting forces, and the driving device drives the rear wheel transmission device to roll the rear wheel and move the bike body.

Abstract: A drive mechanism effects a rotary power output in response to a reciprocating power input resulting from substantially linear forces applied to the drive mechanism, such as those forces applied by a rider on a bicycle. The drive mechanism includes input bevel gears meshed with corresponding output bevel gears coupled to a common power output shaft through clutches that effect a rotary power output at the power output shaft in response to the reciprocating power input from the substantially linear forces. Opposite crank arms are coupled with the input bevel gears such that each crank arm is advanced by an applied substantially linear force, and is retracted upon advancement of the opposite crank arm. In a bicycle, opposite pedals are coupled to corresponding crank arms and are moved through predetermined power strokes in response to substantially linear forces applied by a rider to effect corresponding rotational movements of the input bevel gears and concomitant rotary power output at the power output shaft.

Abstract: A steering mechanism is provided that steers by imparting a variable amount of toe or camber to a wheel, and is capable of imparting both toe and camber using a single mechanism. Some versions of the steering mechanism can provide extremely high stability during turns controlled by the simple leaning of the operator. Vehicles using the mechanism are provided, including lean-steered vehicles, and including a three-wheeled mobile elliptically driven device.

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: The present invention relates to a roller board, and more particularly, to a pedal-driven roller board that converts a reciprocating motion of pedals formed on the board into a rotational motion to drive a gear, so that a user can drive the board without kicking the ground. Furthermore, the pedal-driven roller board includes a derailleur, so that a user can conveniently control the speed of the pedal-driven roller board. Moreover, a user can develop and strengthen his/her muscles by pedaling the pedal-driven roller board. To this end, a pedal-driven roller board according to the present invention includes: a handle disposed at the front side of a board to steer a front wheel; a rear wheel at the rear side of the board; and two pedals formed on the top surface of the board to drive the rear wheel.

Abstract: The present disclosure relates a bicycle, and more particularly, to a kickboard-type bicycle capable of being used as a kickboard or a bicycle according to the user's choice, can be shifted between different speeds for easy speed control, requires the use of both legs (unlike conventional kickboards) so as to promote the balanced growth of youngsters who are in their growing years, and has pedals that can be adjusted to positions suitable for the user.

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: 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: A propulsion system of a lever propelled bicycle that utilizes a right and left side assembly consisting of two sets of linear chain links with an offset connection to one another by a spacer means, wherein each assembly is able by said spacer connection means to wrap around separate radial drive members at least 1¾ revolutions without wrapping around itself, therefore providing the rotational pulling means of it's connected radial drive member with a propulsion that is consistent in range and torque. The propulsion system also provides means of rewrapping each chain assembly around its radial drive member for reciprocal rotational pulling action by alternate levers when a rider applies force to each pedal.

Abstract: A standing bike is provided. The standing bike comprises a body part, a handle part and a power generating part. The body part includes a driving wheel rollably coupled to the rear thereof. The handle part includes a steering wheel provided in the front of the body part to determine the steering direction of the body part. The power generating part includes a rod coupled to the center of the driving wheel, a pedal installed at one end of the rod to generate driving power, and gear means consisting of a plurality of gears with different gear ratios provided at a lateral side of the driving wheel to increase the turning ratio of the pedal. The pedal is turned at limited angles from the top of the body part to the rear side of the body part to generate a rotational force when being depressed. The rotational force is transmitted to the driving wheel. The pedal is automatically returned to its original position by clutch means after the depressing operation and is ready for next depressing operation.

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: A wheelchair comprises a main frame and a seat mounted on the main frame. A pair of front wheels and a pair of rear wheels are also mounted on the frame. A propulsion mechanism is provided for driving the rear wheels, the propulsion mechanism comprising an arm lever for forward and back movement and a gear train between the arm lever and the rear wheels.

Abstract: A pedal-drive system for propelling multi-wheeled cycles includes two pedal level arms connected to a pair of two-bar linkages, which are drivingly attached to corresponding crank pins on each respective side of a common drive spindle, perpendicular to the cycle frame. The linkages rotate the said spindle per each pedal's downward stroke so that when one pedal arm is all the way down, the opposite pedal's crank pin is already beyond full up position, thus ensuring continuous rotation of the drive system. A sprocket on the spindle drives a chain, that drives a sprocket on a back wheel. For higher speeds, a typical bicycle multi-sprocket-cone and speed changing chain-derailleur may be incorporated. The pedal system may be used for small to large manually powered cycles, particularly scooters and bicycles, and may also include an auxiliary electric motor and battery for propulsion.

Abstract: A skateboard-like personal vehicle comprises a platform, a pair of steerable front wheels controlled by an upright steering lever movable left or right about a longitudinal pivot axis by one hand of the rider, a pair of rear wheels, one of which is driven by a reciprocable foot pedal, and an upright post which can be gripped by the rider's other hand.

Abstract: A bicycle includes a frame, a pedaling device, a sprocket device, a stepping device and a clutch device. The pedaling device is furnished on the frame for a rider to perform pedaling operation. The sprocket device includes an axle pivotally coupled to the frame and a front sprocket rotatably mounted on the axle. The stepping device is connected between the pedal device and the sprocket device for transmitting power from the pedal device to rotate the axle and increasing moment of force of the pedaling operation by a reciprocal stepping operation. The clutch device is furnished on the frame for performing a first position to engage with the front sprocket so that the front sprocket is driven together with the axle by the stepping device to rotate, and a second position to disengage from the front sprocket so that the front sprocket is free from driven by the stepping device.

Abstract: Disclosed is an overdrive system for a bicycle, which increases the speed through use of a combination of a plurality of sprockets and ratchet wheels, and which drives with less power where a user steps on a pedal of a drive lever using the principle of a lever as overdrive generating means.

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 multiple gear transmission for a bicycle with an input shaft and an output shaft supported in a transmission housing, whereby the input shaft is embodied to receive pedal cranks and both ends of the input shaft protrude from the transmission housing. One of the ends of the output shaft protrudes from the transmission housing and the output shaft is embodied at this end to receive a drive sprocket. At least one intermediate shaft is supported in the transmission housing parallel between the input shaft and the output shaft. Respectively, at least two gear wheels are arranged on the input shaft, the at least one intermediate shaft and the output shaft. The gear wheels arranged on at least two of the shafts can be connected in a torque-proof manner to the respective shaft via clutch mechanism. All the gear wheels are permanently meshed with another gear wheel.

Abstract: A scooter propulsion mechanism includes a pedal secured to the upper surface of the platform and a rigid link pivotally connected from the pedal to the mechanism components mounted on the bottom surface of the platform. Approximately one-half of the propulsion mechanism is located at one side of the rear wheel, and the other one-half is located at the other side of the rear wheel. The mechanism in one embodiment includes a plurality of gear wheels to increase rotational speed, and in another embodiment a plurality of sprocket wheels joined by chain loops, in both cases to drive the rear wheel and propel the scooter. A slot in the platform allows the larger sprocket wheels or gear wheels to project upwardly therethrough, so that there is sufficient ground clearance for safe riding.

Abstract: The bicycle gear mechanism, in particular a rear wheel change mechanism, comprises a derailleur provided with a drive chain guide element. The derailleur comprises: an arm (2); a first attachment element (5), rotatingly constrained to the arm (2) by a first shaft (3), the first attachment element (5) being predisposed to connect the arm (2) to the bicycle frame; a second attachment element (6), rotatably constrained to the arm (2), the second attachment element (6) being predisposed to connect the arm (2) to an element (7) predisposed to guide the drive chain (30) of the bicycle; a mechanism predisposed to rotatingly connect the first shaft (3) and the second shaft (4); at least an actuator, operatively connected to the arm (2) and the bicycle frame, which actuator is predisposed to rotate the arm (2) about the first shaft (3).

Abstract: A drive apparatus for converting a substantially linear driving force to a rotary propulsive force, the apparatus including a power assembly for accepting a substantially linear drive force and converting said substantially linear drive force to a rotary propulsive force.

Abstract: The present invention relates to a bicycle drive unit that moves forward and backward and idles upon clockwise and counterclockwise pedaling, comprising: a drive shaft having one end located in an inner bearings of an internal bearing housing integrally formed with a rotary plate and the other end fixed to a clockwise one-way clutch and the inner wheel of a counterclockwise one-way clutch by means of a sunk key; a counterclockwise one-way clutch having a central gear press-fitted on its outer wheel; a ring gear engaged with the turnabout gear; a gear flange connected to a ring gear by means of a locking screw; a bearing housing of a dual structure consisting of an outer bearing housing having outer bearings; a brace attached to the outer circumference of the outer bearing housing by means of the locking screw; a detent pin unit for curving the internal bearing housing and the rotary plate; and a bicycle backward movement control unit having a hand lever and a detent latch.

Abstract: The present invention relates to a bicycle drive unit of multiple pedaling modes, comprising a drive shaft on one side having a counterclockwise one-way clutch and a clockwise one-way clutch coupled thereto by means of sunk keys and the drive shaft is engaged with a ring gear having an outer circumference attached to a chain sprocket; a plurality of hollow turnabout gears engaged with the central gear of the drive shaft; a drive shaft on the other side having one side rotatably inserted into an inner bearing housing that is integrally formed with the rotary plate and the other side coupled to the inner wheels of the clockwise one-way clutch and the counterclockwise one-way clutch by means of the sunk keys and a plurality of turnabout gears, a two-way turnabout gear and a hollow turnabout gear.

Abstract: A portable robotic system having a folding carriage is disclosed. The carriage in one embodiment includes two legs and a lateral stabilizer. The folding legs and stabilizer allow the carriage to be maneuvered into a plurality of open and closed positions. In the open positions, the legs and stabilizer are spaced apart to support the robotic system during operation. In the closed positions, the legs and stabilizer and substantially parallel to one another. In one closed position with one leg or stabilizer extended to within reach of a person, the carriage may be rolled like a dolly. In another closed position with one leg or stabilizer collapsed against the carriage, the carriage may be carried like a suitcase. Methods of folding and transporting a robotic system and carriage are also disclosed.

Abstract: A treadle scooter for providing mobility to a user. The treadle scooter includes a frame assembly comprising a front end and a rear end. A steering assembly is rotatably coupled to the front end of the frame assembly and is designed for being actuated for directing the frame assembly in a desired direction. A front wheel is rotatably coupled to the steering assembly. A rear wheel is rotatably coupled to the rear end of the frame assembly. A drive assembly is coupled to the frame assembly and operationally coupled to the rear wheel for rolling the rear wheel across the support surface when the drive assembly is actuated. A transition assembly is operationally coupled between the drive assembly and the rear wheel. The transition assembly is for rotating the rear wheel when the transition assembly is rotated by the drive assembly.

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: A human propelled vehicle, e.g., bicycle, has a propelling mechanism that allows crank arms longer than eight inches. The propelling mechanism includes first and second shafts coupled to first and second crank arms and trained to a gear train, which is trained to a conversion mechanism, which is trained to an output shaft. The crank arms extend rearwardly from their shafts so that the axes of the pedals mounted to the crank arms reciprocate in opposite directions through an arc that passes behind the bottom bracket axle.

Abstract: A mechanized scooter includes a frame, having a front wheel and at least one rear wheel rotatably attached thereto. A pair of steps are rotatably mounted in the frame and linked to a drive train to drive the at least one rear wheel. The drive train may include a number of gears and a drive element connected to a rack, or drive chains and sprockets secured to the at least one rear wheel.

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: 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 reciprocating type driving mechanism for use for a bicycle, baby carriage and wheel chair, which can provide convenience in driving to the user and which comprises: a front and rear wheels W1 and W2; a gear box B; a driving and driven gears 20 and 30 and a side gear 31 formed integrally with the driven gear 30; driving members 40 each comprising three links 41, 42 and 43; a pinion 50 adapted for alternate operation of the driving members 40; a head gear 60 in meshed connection with the side gear 31; an intermediate gear 70 positioned below the head gear 60; a relaying gear 81 in meshed connection with the intermediate gear 70; an output gear 82 provided at the bottom part of the driving axle 80 for transmitting the torque; and a hub gear 90 in meshed connection with the output gear 82 (FIG. 1).

Abstract: A foot driven vehicle utilizing a platform. The platform is motivated on a surface utilizing a foot pedal connected to a crank. The crank further includes an endless surface which is linked to a first wheel supported directly to the bottom of the platform. An element which is engageable by a foot or gripable by a hand, is linked to a second wheel supported by the bottom of the platform. The element is movable to turn the second wheel for the purposes of steering. A brake is also included in the present invention for arresting the turning of the first and/or second wheels. The brake includes a flange which is also operated by the foot of the user. A ratchet may also be used in the first wheel to bias rotation of the same.

Abstract: A foot driven vehicle utilizing a platform. The platform is motivated on a surface utilizing a foot pedal connected to a crank. The crank further includes an endless surface which is linked to a first wheel supported to the bottom of the platform. An element which is engageable by a foot, is linked to a second wheel supported by the bottom of the platform. The element is movable to turn the second wheel for the purposes of steering. A brake is also included in the present invention for arresting the turning of the first and/or second wheels. The brake includes a flange which is also operated by the foot of the user.

Abstract: A fencing sports wheelchair includes a seat (1) mounted to a base (2). A pedestal (3) underlying the base such that the base is selectively rotatable. A platform (10) having an upper surface to which the pedestal is affixed and having a lower surface. At least three wheels are mounted to the platform so that the wheels extend beneath the lower surface of the platform. In addition to a lever means for converting single-handed manual motion into forward and backward translation of said platform.

Abstract: A mobile exercise apparatus is provided for sit down exercise operated in the recumbent position where foot operated pedals follow an oblong pedal path coordinated with arm exercise. The pedal path is configured to provide a long downward power stroke that remains generally tangent to the lower leg for greater leg exercise and torque conversion to the driven wheel. The pedals are guided by extended foot supports as part of a linkage system that is coupled to the arm exercise. Pedal motion and arm exercise can be adjusted during operation of the exercise apparatus to exercise different muscles.

Abstract: In order to provide a vehicle with a driven wheel (30), which possesses an external wheel hub (23) and is driven with the aid of a thrust crank drive which, while easily and safely operable, is at the same time able to achieve a high terminal velocity and which is simple in the construction of the drive arrangement, the thrust crank drive comprises a crankwheel (38) and a thrust rod (37) rotatably hinged with one end to the crankwheel (38) outside the wheel axis for the transmission of the force. The driven wheel (30) is driven by means of a drive wheel (7) which, via a free-wheel mechanism (11,12, 13,14,19), is in operative connection with the external wheel hub (23) of the driven wheel (30). A first mechanism (36) is provided which transmits the force between the crankwheel (38) and the drive wheel (7) and, for overcoming the dead center, a second mechanism is provided in the thrust crank drive which at least partially neutralizes the effect of the free-wheel mechanism (11,12,13,14,19).

Abstract: A rectilinear drive assembly for a bicycle. The drive assembly includes a pair of tracks that each have a pair of opposing side portions joined by a pair of opposing radial end portions which together define a rectilinear path. The drive assembly also has a pair of pedals that are coupled to the track by a pair of wheel assemblies. The wheel assemblies follow the outline of the tracks so that the pedals move in a rectilinear path. The linear movement of the pedal provides a more efficient transfer of power from the rider's legs to the drive assembly. Each wheel assembly has a pair of inner wheels that roll along an inner surface of the track and a pair of outer wheels that roll along an outer surface of the track. The outer wheels are separated by a distance greater than the separation of the inner wheels to compensate for the different radiuses of the inner and outer surfaces at the radial end portions of the track. The wheel assemblies are connected to chains which rotate a number of sprockets.

Abstract: A mobile exercising apparatus which promotes cardiovascular exercise yet minimizes impact to critical joints. A frame supports a pair of reciprocating members which are displace generally horizontally along the frame at one end yet reciprocate in a circular motion at the other through a coupling system attached to the frame. Structure is included which permits each foot of the user to move in a generally elliptical path during exercise and drive a wheel thereby propelling the apparatus. This allows simulation of walking or running without impact. The device may include linkage to facilitate a corresponding upper body exercise involving movement of the arm in which case each hand of the user is displaced along an arcuate path.

Abstract: There is provided an occupant-propelled land vehicle, such as a bicycle, having a frame, at least one front wheel, at least one rear wheel, and a seat for the rider of the vehicle, supported by the frame, wherein two levers, each having a front end and a back end, are pivoted on the frame on each side forwardly of the rear wheel and at a point substantially closer to the back end than to the front end. Two rigidly interconnected and spaced-apart parallel discs, one of the discs being toothed, are associated with an upper portion of the rear wheel. Connecting rods are pivotally connected to the back ends of the levers and are eccentrically-rotatably connected to the discs, a sprocket wheel is connected to the axle of rear wheel, and a driving chain is included in a connection between the toothed disc and the rear-wheel sprocket wheel.

Abstract: The pumping propulsion system relates to a new drive and/or power system for a bicycle/vehicle. Power is applied to the pumping propulsion system by a stepping action from an individual's legs and feet. The pumping propulsion system operates by use of independent drawn cup roller clutch mechanisms which are integral to a pair of support members and a sprocket which in turn are engaged to a shaft. The drawn cup roller clutch mechanisms permit the pair of support members to be returned to an elevated position by a spring mechanism. During operation of the pumping propulsion system, the stepping action by an individual rotates a sprocket which is engaged to a shaft. The shaft is engaged to the hub of the bicycle frame. The rotation of the sprocket circulates the chain, transferring power to the rear wheel propelling the bicycle/vehicle.

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: There is provided an occupant-propelled land vehicle, such as a bicycle, having a frame, at least one front wheel, at least one rear wheel, and a seat for the rider of the vehicle, supported by the frame, wherein two levers, each having a front end and a back end, are pivoted on the frame on each side forwardly of the rear wheel and at a point substantially closer to the back end than to the front end. Two rigidly interconnected and spaced-apart parallel discs, one of the discs being toothed, are associated with an upper portion of the rear wheel. Connecting rods are pivotally connected to the back ends of the levers and are eccentrically-rotatably connected to the discs, a sprocket wheel is connected to the axle of rear wheel, and a driving chain is included in a connection between the toothed disc and the rear-wheel sprocket wheel.