Abstract: A Steerable Crank System including a Steerer Base firmly connected to the chassis/mainframe of a machine, said Steerer Base containing and supporting Grooved Cog Wheel situated in-line and parallel to the power driving direction in a manner that allows said Grooved Cog Wheel to rotate around its axis and drive the machine power, said Steerer Base containing and supporting a Fork in a manner that allows said Fork to rotate around its main axis and by that rotation movement it controls the steering, said Fork containing a 2nd axis supporting and housing a Crank Shaft in a manner that allows said Crank Shaft to rotate around its own axis, on said Crank Shaft attached a Butterfly Connector, said Butterfly Connector coupling together said Crank Shaft and Grooved Cog Wheel.

Abstract: A vehicle including a front module including a front wheel and a rear module selectively moveably connected to the front module, the rear module including a rear wheel. The vehicle further includes an electric motor assembly, a mode selector, at least one extension assembly connected between the front module and the rear module for selectively extending and retracting to provide a selective variation in an overall length of the vehicle; and a vehicle control unit being communicatively connected between the mode selector and the electric motor assembly. The vehicle control unit performs a method for selectively changing the overall vehicle length. The method includes receiving from the mode selector an indication to change the overall length, determining that the front wheel is rotationally locked, and causing an electric motor to drive the rear wheel such that the rear module translates relative to the front module.

Abstract: A transmission apparatus for a leveraged wheelchair may include a wheelchair, a driving mechanism, a driving wheels set, and a transmission wheels set. The driving mechanism has a first tube and a second tube which are pivotally connected, and with the relative movements between the first tube and the second tube, the driving wheels set can have forward or rearward rotation so as to achieve bi-direction driving effect of the wheelchair. Also, the relative movement between the first tube and the second tube is cooperated with a flexible connecting head such that a handle of the wheelchair is adapted to be forward and rearward pulled or rotated axially so to achieve the moving and turning actions of the wheelchair with one hand.

Abstract: An auxiliary bicycle transmission for a bicycle has a crossbar formed by a telescoping bar slidably mounted in an outer channel member. One end of a half chain or half V-belt is connected to the telescoping bar, the other end is connected by means of a spring to the upper end of a down tube, and the chain or V-belt that engages a freewheeling sprocket or pulley so that when the telescoping bar extends out of the outer channel member against the spring force, the freewheeling sprocket rotates and provides additional motive force to the standard transmission of the bicycle.

Abstract: Invention relates to the type of two wheel velocipede where the propulsion to the rear wheel is achieved by the use of riders legs/feet and propulsion to the front wheel is achieved by the use of riders arms and upper body on cranks that travel in circular motion using a single chain as a means to transfer force to the front wheel. An innovative step is the chest and upper body support pad which enables the rider to relieve strain of the back muscles and provide a surface against which to pull the handlebars.

Abstract: A human-powered vehicle may include a frame and a drive member pivotally coupled to the frame. Pivotal reciprocal motion of the drive member in either direction may generate rotational motion to the wheels of the human-powered vehicle. The seat of the human-powered vehicle may be positioned such that an axis about which the drive member pivots is located below, or closer to the ground surface, than the seat.

Abstract: A steering system includes a front fork, a front wheel, a handlebar, two bar ends, and two steering members. The handlebar includes a support bar and two elbows disposed at two opposite ends of the support bar. The two bar ends each includes a grip and a linkage; the linkage fits through the corresponding elbow and connects with the grip. Each of the steering members connects the corresponding bar end to the front fork, so that the swing direction of the grips determines the turning direction of the front fork and thus the travel direction of the front wheel. A bicycle using the steering system is also provided. The steering system and the bicycle of the present invention utilize swinging of the grips of the bar ends connected to the two elbows extending from the handlebar to control the travel direction of the front wheel.

Abstract: A scooter includes a frame where a positioning unit is disposed, a control rod, a front wheel, a braking device, two pedals, a saddle, and at least one rear wheel. A sliding trough is formed on a bottom of the frame. A folding device is situated between the control rod and the frame and has a body fixed to the control rod, an operating unit disposed on the body and sliding within the sliding trough, and an engagement unit capable of engaging the frame with the body. The engagement between the positioning unit and the engagement unit can spread the frame and the control rod easily with less labor and facilitate a riding action. The positioning unit can also be separated from the engagement unit to fold the frame and the control rod, thereby reducing the volume of the scooter and increasing the convenience of carrying and stowing.

Abstract: The present invention relates to a rider's simultaneous use of his forearms/hands and legs to provide dual power into a propulsion system for riding a cycle vehicle, including a bicycle and a tricycle, or other vehicles. The invention permits the rider to have complete control turning the cycle vehicle, at will, right or left, while at the same time pumping a set of forearm/hand bars in an up power stroke and a down power stroke. In addition, even though the pumping action is lineally moving a telescoping rod and a push/pull cable back and forth, it is also simultaneously rotating a flywheel, upper and lower sprockets, and the crank axle to drive the bicycle wheel forward over the riding surface. Thus, the rider can provide maximum power into rotating the rear tire by simultaneously using both his arms and legs, while contemporaneously controlling his direction of travel.

Abstract: The present invention relates to a bicycle having a front wheel driving means. The bicycle having the front wheel driving means according to the present invention includes a frame, a front wheel, a rear wheel, a steering part, and a chain part, wherein opposite sides of the front wheel are provided with respective recoilers having respective one-way clutches therein, and the steering part is provided with a driving means for pulling a wire connected to each of the recoilers.

Abstract: A cycle or bicycle is driven both by rotation of pedals that drive a rear wheel in a conventional manner, and by fore and aft movement of the handlebars. Fore and aft movement of the handlebars about an adjustable hinge, which also rotate as a unit about a front wheel turning axis, is transmitted to a drive rod. The drive rod then drives an actuator mechanism which transfers force due to movement of the handlebars to the primary drive mechanism through which pedal power is also applied to the rear wheel. Forces generated by this movement of the handlebars is additive to forces applied by the rider directly to the pedals, in a coordinated manner that does not inhibit steering of the bicycle.

Abstract: A bicycle. A front bicycle wheel and rear bicycle wheel are connected to a bicycle frame. A drive sprocket drives the rear bicycle wheel. Two hand grippable pivotally connected handles are each connected via a handle drive linkage to the drive sprocket. The pivoting of the handles in an approximately vertical plane controls the rotation of the drive sprocket and spins the rear bicycle wheel. In one preferred embodiment, the bicycle is a stationary bicycle. In another preferred embodiment the bicycle can be steered and taken on the street.

Abstract: A four wheeled cycle including a frame, a load carrying base, two front wheels, two rear wheels, a steering mechanism, a brake mechanism, a pedal mechanism, a chain drive mechanism, and a saddle unit. The frame is a retractable frame, including a rear support frame, a down tube, a transverse tube, and at least two telescopic casing tube assemblies that are arranged side by side. Each of the telescopic casing tube assemblies includes a front casing tube, a middle rod, and a rear casing tube. The load carrying base includes a cross bar, a front connecting rod, a left connecting rod, a right connecting rod, a rear connecting rod and internally hinged bars for linking the connecting rods. The two front wheels are respectively connected to two ends of the cross bar through a bearing at the top ends of a front fork.

Abstract: Disclosed is a hand-foot compound bicycle with a double ratchet, which comprises a handle assembly which comprises a crank handle for generating handle power, and an upper gear to be rotated by rotation of the crank handle; a pedal assembly which comprises a pedal for generating pedal power, and transfers both or either one of the handle power and the pedal power to a rear wheel; and a power transfer unit which comprises a first power transfer gear corresponding to the upper gear, and a second power transfer gear for transferring the handle power from the first power transfer gear to the pedal assembly.

Abstract: There is disclosed a combined-drive bicycle which can increase a driving speed and the beneficial effects of exercise and simultaneously to give fun to a rider. The combined-drive bicycle includes a handle assembly configured to steer a front wheel, the handle assembly comprising a crank handle to generate a handle motive force and a first gear rotated by the rotation of the crank handle, a pedal assembly configured to transmit the handle motive force and a pedal motive force generated by pedals to a rear wheel selectively or simultaneously, and a motive force transmission part to transmit the handle motive force to the pedal assembly, irrelevant to the steering of the handle assembly.

Abstract: A dual drive system for a non-motorized vehicle comprising a first drive unit disposed on a vehicle frame, wherein the first drive unit has a rotary action and is operatively associated with a first wheel assembly for turning a wheel; and, a second drive unit disposed on the vehicle frame, wherein the second drive unit has a lever action and is operatively associated with the first wheel assembly for turning the wheel. The first drive unit and the second drive unit are independently operable for turning the wheel.

Abstract: A vehicle is provided that includes a frame having a drive member supported for rotation thereon. A handlebar is supported for pivotal movement relative to the frame. A drive mechanism is provided on the frame that is configured to rotate the drive member in a first rotational direction when the handlebar is pivoted in either a first direction using a push-stroke or a second direction using a pull-stroke.

Abstract: A bicycle. A front bicycle wheel and rear bicycle wheel are connected to a bicycle frame. A steerer tube controls the left and right motion of the front bicycle wheel. A drive sprocket drives the rear bicycle wheel. Two hand grippable pivotally connected handles are each connected via a handle steering linkage connection to the steerer tube. They are both also connected via a second handle drive linkage to the drive sprocket. The pivoting of the handles in an approximately horizontal plane controls the left and right motion of the front bicycle wheel. The pivoting of the handles in an approximately vertical plane controls the rotation of the drive sprocket and drives the bicycle forward.

Abstract: An exercise vehicle is provided with an improved push/pull rod steering system for use in directing vehicle travel and maintaining balance without interfering significantly with vehicle power. The vehicle includes a frame with an attached drive system that includes a drive wheel. The drive system includes arm levers operatively connected to the drive wheel so that counter-reciprocal movement of the arm levers produces rotation of the drive wheel. The steering system includes a guidance wheel rotatively coupled with the frame, a steering crank which is operatively coupled with the guidance wheel, hand levers pivotally attached to the arm levers and push/pull rod assemblies connecting the hand levers to the steering crank. When one hand lever pivots, the steering crank rotates, causing the guidance wheel to turn while simultaneously causing the other hand lever to pivot the opposite direction.

Abstract: A bicycle wherein the front wheel can be both steered and powered by reciprocal movement of the handle bars in a forward and rear direction. The drive system for the front wheel comprises a first linkage comprising two arms, one of which is a pivoting arm, and a second linkage comprising three arms, two of which are pivoting arms. The two arm linkage system is the primary driver in the sense of rotating a drive sprocket between two over center positions. The three arm linkage system, while also driving the drive sprocket, serves the primary function of moving the two arm linkage system over the two center positions, as the handle bars are reciprocated in forward and rear directions.

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 hand/foot powered bicycle includes a pedal power mechanism as a power source for driving the bicycle. A user can pedal a first pedal and a second pedal with both feet to drive a front sprocket. Via a first chain, the front sprocket drives and rotates the rear wheel. The hand/foot powered bicycle further includes a handlebar power mechanism having a handlebar structure as a power source for driving the bicycle. The hand/foot powered bicycle further includes a power transmission assembly for transmitting power to the front sprocket of the bicycle to drive and rotate the front sprocket. By means of continuously rotating the handlebar structure, the power transmission assembly is driven to transmit power to the front sprocket to drive and rotate the rear wheel via the first chain. A user can drive and make the hand/foot powered bicycle advance with hands and/or feet.

Abstract: “ARRANGEMENT FOR BICYCLE WITH COMBINED MOVEMENT”, consists essentially of a bicycle (1) that takes advantage its basic original structure with some possible variations of the frame (Q) the main object of which is to exercise upper members duly supported by “iron bars” (2) and respective levers (3) that describe a cyclic oblique movement, such that this movement is transformed into rotation of the front crankset (6) by means of interconnecting rods (15) with end knuckles (16) at both ends. The rotation of the front crankset (6) is then connected by a chain (5) to the conventional powering mechanism (M) of the bicycle.

Abstract: A bicycle arm-drive apparatus includes a stationary mounting structure, an arm drive input mechanism, a drive motion transmission mechanism, and a plurality of connectors. One end of the mounting structure attaches to the front-center portion of the bicycle. The arm drive input mechanism includes a pair of control arms that pivotally attach to the other end of the mounting structure and generally extend rearward and outward from there. The operator grips each control arm, inputting arm power by driving them fore-and-aft. The drive motion transmission mechanism includes a pair of connecting rod assemblies running down opposite sides of the bicycle frame between the control arms and bicycle pedals. A plurality of connectors link the connecting rod assemblies to the pedals and control arms in order to transmit control arm fore-and-aft movement via the connecting rod assemblies to the pedals to enable the arm power to assist with bicycle pedaling.

Abstract: A bicycle wherein the front wheel can be both steered and powered by reciprocal movement of the handle bars in a forward and rear direction. The drive system for the front wheel comprises a first linkage comprising two arms, one of which is a pivoting arm, and a second linkage comprising three arms, two of which are pivoting arms. The two arm linkage system is the primary driver in the sense of rotating a drive sprocket between two over center positions. The three arm linkage system, while also driving the drive sprocket, serves the primary function of moving the two arm linkage system over the two center positions, as the handle bars are reciprocated in forward and rear directions.

Abstract: A steering mechanism for a push-and-pull vehicle provides a handlebar to be used to steer a vehicle left and right while simultaneously being used to drive the vehicle forward by pushing and pulling action. The handlebar is at the top of a swing pole, the swing pole being held by a turning sleeve on a swing arm pivoted on the vehicle frame. The swing pole connects the handlebar to a frame supported u-joint which is connected to a vehicle steering mechanism. The turning sleeve connects the handlebar and swing pole to the swing arm, the output of the swing arm driving the vehicle forward.

Abstract: Drive systems configured to combine arm power with leg power are disclosed. A drive system may comprise an arm power headset comprising: a joint assembly configured to provide forward and aft movement; and a mounting bracket coupled to the joint assembly and configured to align the joint assembly. The drive system may further comprise: a push/pull rod configured to convert forward and aft arm movement into rotary movement, the push/pull rod coupling the arm power headset to a first drive assembly; the first drive assembly comprising a first drive sprocket coupled to a first crank shaft; a second drive assembly adjacent the first drive assembly; and a linking device linking the second drive assembly with the first drive assembly.

Abstract: A cycle, such as a bicycle, used forward and rearward movement of handlebars to provide an additional force for driving or propelling the rear wheel of a bicycle. A drive rod linkage extends from the handlebars to transmit the fore and aft movement of the handlebars to drive the rear wheel of the bicycle. The rod linkage transfers this fore and aft motion without interfering with conventional steering of the front wheel. Forward and rearward movement of the handlebars is consistent with the normal manner of riding a traditional bicycle.

Abstract: The present invention relates to an arm and leg powered bicycle, comprising handle levers, a front wheel, a rear wheel, a handle shaft, supporting frames, pedals, a pedal shaft, front and rear sprockets and a chain belt, wherein the bicycle further includes an operating means for vertically rotating the handle levers, said member consisting of a handle rotation shaft, an operating rod or rods and a handle rotation shaft support, and a means for transferring the rotating force of the handle levers to a pedal shaft, said means consisting of a crank shaft, a rotating shaft, a flexible joint, a driving gear and a driven gear mounted on a pedal shaft.

Abstract: A bicycle includes a frame having a handle unit pivotably connected to a case which is fixed to the steering tube of the front fork. The handle unit includes a shaft about which the handle unit is pivotable back and forth, and the shaft is connected with an arm which is operatively connected with a front wheel driving unit so as to drive the front wheel of the bicycle. The bicycle includes pedals to rotate the rear wheel by the conventional rear wheel driving unit by a chain cooperated with gear wheels. The bicycle includes two driving units which are operated by the users' legs and hands.

Abstract: Drive systems configured to combine arm power with leg power are disclosed. A drive system may comprise an arm power headset comprising: a joint assembly configured to provide forward and aft movement; and a mounting bracket coupled to the joint assembly and configured to align the joint assembly. The drive system may further comprise: a push/pull rod configured to convert forward and aft arm movement into rotary movement, the push/pull rod coupling the arm power headset to a first drive assembly; the first drive assembly comprising a first drive sprocket coupled to a first crank shaft; a second drive assembly adjacent the first drive assembly; and a linking device linking the second drive assembly with the first drive assembly.

Abstract: A dual propulsion bicycle comprises a second drive mechanism at the front of the bicycle. The second drive mechanism comprises a sprocket and chain assembly, with a first sprocket associated with the front wheel and a second sprocket associated with a steering mechanism, wherein the handles can be moved relative to the steering mechanism to adjust the manner in which the handles are manipulated to achieve propulsion. Additionally, the handles can be positioned in the manner of a conventional bicycle to allow a rider to propel the bicycle conventionally.

Abstract: A device for hand-driven operation of a guided wheel arranged on a steering gear is pivotable about a steering axis perpendicular to the wheel's axis of rotation. The device includes first and second handles, first and second coupling devices respectively arranged thereon, and a power transmission train coupled to transmit traction power to the second coupling device via coupling points for transmitting handle movement to a drive device cooperating with the guided wheel's hub. The power transmission train extends from the first coupling device via deflecting elements, thereby modifying the extension direction of the train, in a second power transmission section to the second coupling device such that the coupling devices move the coupling points of the train on substantially linear drive paths approaching and absenting of a symmetrical plane of guidance which is oriented in a perpendicular manner in relation to the axis of rotation of the guided wheel.

Abstract: An arm and leg powered vehicle includes a chassis mounted on a plurality of wheels, at least one of said wheels being a drive wheel wherein rotation of the drive wheel propels the vehicle forward, a seat mounted on the chassis for a rider to sit on, the seat being constrained against longitudinal movement relative to the chassis, a handlebar operatively connected to a steering rod whereby axial rotation of the handlebar generates a turn on at least one of said wheels, the handlebar including a handle holder arranged to move in a linear reciprocating manner relative to the steering rod, a foot pedal housing arranged to move in a linear reciprocating manner relative to a rail fixedly connected to the chassis, and, a power transmission system for receiving power from the arms of the rider in response to the application of a pulling force to the handlebar and from the legs of the rider in response to the application of the pushing force to the foot pedal housing and for transmission of the received power to the d

Abstract: A leg-wheeled traveling mechanism is provided with a seat portion, two follow-up legs, each having an end portion that is freely rotatably connected to the seat portion, with a distance between the end portion and a tip portion having a foot-rest portion being retractable, two or more support legs, each having an end portion that is freely rotatably connected to the seat portion, with a distance between the end portion and a tip portion having a wheel portion being retractable, a foot-position measuring unit that measures relative positional changes of the foot-rest portions and foot portions of a rider, and a control device that controls operations of the follow-up legs and the support legs, based upon the relative positional changes measured by the foot-position measuring unit so as to allow the foot-rest portions to move virtually in the same directions as those of the foot portions.

Abstract: A seated user-propelled vehicle (500) can be propelled using levers (1000) acting on the rear side wheels (595). The levers are disposed between the wheels and the sides (530, 532) of the vehicle and can be moved together, separately or in turn. The levers have curved drive ends (113), the faces of which include a length of roller chain (127) to mesh with freewheels (555) on the hubs of the wheel axles (560) and are held in sufficient co-operation against the freewheels due to tensioning. The levers can be raised through approximately 90° in each drive stroke. Smooth and effective propulsion is obtained. Other uses of the drive levers are disclosed, including a go-kart, power generator, watercraft and personal exercise machine.

Abstract: A vehicle including a frame; a rider support platform supported by the frame; a pair of first wheel units pivotably supported by the frame; a pair of second wheel units supported by the frame; first and second handlebars pivotably supported by the frame; a first linkage connecting the first handlebar to one of the first wheel units so that pivotable movement of the first handlebar causes wheel of the one of the first wheel units to turn relatively to the frame; a second linkage connecting the second handlebar to the other of the first wheel units so that pivotable movement of the second handlebar causes wheel of the other of the first wheel units to turn relatively to the frame; and a movement coordinator which connects the first and second linkages to each other so that pivotable movement of one or both of the first and second handlebars in one direction causes the wheels of both first wheel units to turn in the same direction.

Abstract: The regular handlebar and front wheel of a bicycle are replaced by a steering head including a pair of hand cranks, and by a sprockets-containing front wheel. The hand cranks are positioned such that the rider's weight center is stabilized unto the cycle's seat, away from his hands. A sprocket mounted unto the hand cranks' drive shaft transmits the power from the hand cranks, through a continuous chain, to the front wheel's sprockets. A set of brake cables and bearings prevent the brakes' cables from twisting, while rotating the hand cranks. The regular cycle's seat is replaced by a back support-containing seat. The rider can position the hand cranks in unison or alternatively. The rider can drive the bicycle by simultaneous or independent foot and hand operation. The addition of a set of hand cranks to a regular bicycle enables an increase in the cycle's speed, along with intensified exercise. The hand cranks system can be mounted and unmounted onto any existing bicycle.

Abstract: The present invention relates to an arm and leg powered bicycle, comprising handle levers, a front wheel, a rear wheel, a handle shaft, supporting frames, pedals, a pedal shaft, front and rear sprockets and a chain belt, wherein the bicycle further includes an operating means for vertically rotating the handle levers, said member consisting of a handle rotation shaft, an operating rod or rods and a handle rotation shaft support, and a means for transferring the rotating force of the handle levers to a pedal shaft, said means consisting of a crank shaft, a rotating shaft, a flexible joint, a driving gear and a driven gear mounted on a pedal shaft.

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: A therapeutic tricycle for use by children with developmental disabilities includes both hand pedals and foot pedals connected by a drive chain. The foot pedals are connected to a fork tube, partially enclosed within a support tube and driven by a foot pedal sprocket. The hand pedals are supported by a head tube, slidably received within the fork tube and attached to a hand pedal sprocket. A chain tension adjustment assembly permits adjustment of the drive chain tension. A slot in the bottom of the head tube engages a transverse within the fork tube so the head tube and the fork tube remain in fixed relationship, thereby holding the chain sprockets in co-planar alignment.

Abstract: This invention is a quad cycle and exercise apparatus with arm and foot power as propulsion. The rider is upstanding during operation.

Abstract: The steering system according to the invention provides a means of coordinating the movements of the two steering handles on a machine such as light tricycle type vehicles propelled by a pedal (5) and propulsion arms (6). The steering system comprises two handles (8) installed free to pivot, each handle being installed at the end of one of the propulsion arms (6) and a first cable (10) being fixed to the bottom of each handle. The second end is fixed to the steering shaft (9) of the tricycle. A second cable connects the two handles to each other to coordinate the movement of the handles (8). Application to leisure tricycles, light vehicles in general, indoor sports and medical re-education apparatus and static game facilities for leisure parks.

Abstract: Disclosed herein is a bicycle of the type driven by operation of a handle. According to the present invention, a shaft rod of the bicycle is installed with a hinge so as to enable the handle to rotate forward or backward. The handle is bent by a constant angle on the basis of the hinge, thereby being divided into both upper and lower portions on the basis of the hinge. The handle is formed at the lower portion thereof with an elongated guide bore, and a roller is inserted inside the guide bore so as to move upward and downward along the guide bore. The roller is connected to the upper end of a rod, which is installed so as to move upward and downward in a rectilinear course according to pulling and pushing operation of the handle.

Abstract: The disclosure herein provides a two-wheel bicycle system wherein a pair of long levers are arranged on the cross-beam of the frame, to provide the fulcrum for the motion of the levers. The tops of the levers comprise handles perpendicular to such levers, with linkages to a circular and rotatable crank, which rotates in a plane parallel to the ground about a column commonly found in the steering mechanism for such a bicycle. The bottom ends of the levers connect to linking members to connect such levers to the pedals commonly found in such a bicycle. Such linking members are provided so that they are disconnected and then rotatable to be mounted on the diagonal frame piece of the bicycle, when the bicycle is used with hand-operated steering and foot-operated power. Before disconnection, only upper body energy is used to control both steering and powering the bicycle.

Abstract: A front wheel drive fork is provided wherein the arm powered handlebar provides mechanical means for transforming the linear stokes of the rider to the rotary propelling of the front wheel. The front wheel drive is an improvement to existing cycles, is utilized to exercise the upper and lower extremities, and provides more traction to cyclists.

Abstract: The present invention is a drive mechanism for human powered vehicles. In general, the invention is a unique drive mechanism for any human powered vehicle, such as a bicycle or a human powered boat. The mechanism enables the operator to efficiently apply both arm and leg power for motive force while maintaining the ability to steer using the arms. The mechanism couples the arm and leg motion in a harmonious union similar to a running motion but can be easily uncoupled should the operator prefer to power the vehicle only with leg power. The mechanism enables motive power to be applied with both the up and down stroke of either or both arms. Specifically the drive mechanism has oscillatable handlebars and a linkage connectable to the drive of the human powered vehicle.

Abstract: A recumbent tricycle which includes a propulsion system which includes a combination of foot and arm power for propulsion. Pedals are operated with the rider's legs. Handles are also connected to the drive mechanism, with the handles pulled back and pushed forward to add to propulsive power. The handles are also connected through a tie rod arrangement to the front wheels such that the wheels may be turned so that the vehicle can be steered by moving the handles toward one side or the other. Preferably, two large front wheels similar to conventional bicycle wheels are provided in front, with a single smaller diameter but wider driven rear wheel. The rear wheel is mounted on a sub-frame pivotally secured to the vehicle frame and supported on a shock absorber. Brake and gear change mechanism controllers are mounted on the handles.

Abstract: An exercise cycle comprising a frame, a hinge, and a drive mechanism. The frame comprises a forward frame member and a rearward frame member. The hinge operatively connects the forward frame member to the rearward frame member such that the forward and rearward frame members are pivotally moveable relative to each other about a hinge axis between operable and stowable positions. The drive mechanism includes an endless loop assembly. The exercise cycle is configured such that the frame may be folded without removal of the endless loop assembly. The cycle further includes left and right linearly reciprocating assemblies. The left reciprocating assembly is configured for being moved back and forth with foot pressure and hand pressure from a user's left hand and left foot. The right reciprocating assembly is configured for being moved back and forth with foot pressure and hand pressure from a user's right hand and right foot.

Abstract: A compact, covered front wheel drive assembly that replaces the handlebars on an existing bicycle frame. It drives the front wheel while standard bicycle foot pedals and drive train drive the rear wheel. However, it can also be operated independently of the foot pedals, or locked for use of the foot pedals alone. It has drive ratios and shifting that are independent of the rear drive train, and are configured for selectable, comfortable hand cranking rates, including normal bicycle cruising speed. Shift levers are mounted within reach of a rider's thumbs, without removing a hand from the cranks. A brake lever on each handle holds the brake cables forward at all times, eliminating interference both with the hand cranks and with obstacles brushing beside the bicycle.