Abstract: A mechanism for shifting a chain from one sprocket to another sprocket is disclosed herein. The mechanism preferably includes rotor assembly, a control element and a chain tensioner. The rotor assembly preferably has a conical shaped body with a chain slot having clearance windows and cam surfaces. The control element rotates the rotor assembly to shift the chain from one of the sprockets to another sprocket without lateral movement of the rotor assembly.

Abstract: Traction planets and traction rings can be operationally coupled to a planetary gearset to provide a continuously variable transmission (CVT). The CVT can be used in a bicycle. In one embodiment, the CVT is mounted on the frame of the bicycle at a location forward of the rear wheel hub of the bicycle. In one embodiment, the CVT is mounted on and supported by members of the bicycle frame such that the CVT is coaxial with the crankshaft of the bicycle. The crankshaft is configured to drive elements of the planetary gearset, which are configured to operationally drive the traction rings and the traction planets. Inventive component and subassemblies for such a CVT are disclosed. A shifting mechanism includes a plurality of pivot arms arranged to pivot about the centers of the traction planets as a shift pin hub moves axially.

Abstract: A self aligning belt drive system comprises a belt drive having a plurality of longitudinally spaced inner lobes each having an alignment groove. The system further comprises at least one pulley comprising a frame configured to rotate about a rotation axis and having a circular outer rim. A plurality of circumferential teeth extend radially and axially of the rim with each tooth being configured to be received between adjacent inner lugs of the drive belt. An alignment flange extends radially between circumferential teeth. The alignment flange is configured to be received in the alignment groove and the alignment flange extends no further radially from the rotational axis than the circumferential teeth. The circumferential teeth, the alignment flange and the alignment groove are configured so that with the alignment flange received in the alignment groove, the drive belt rides on the circumferential teeth.

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

Abstract: A two wheel steering bicycle with two steering controls and rider positioned facing an angle greater than zero and less than ninety degrees with respect to the direction of motion. A frame member connects the rear head tube to the front head tube. The rear fork can rotate within the rear head tube. A rear steering handle is connected to the rear fork. The front fork can rotate within the front head tube. A front steering handle is connected to the front fork. A seat tube member attaches to the frame member. A bicycle saddle is attached to the seat tube member in such a way as to position the rider facing an angle greater than zero and less than ninety degrees with respect to the longitudinal axis of the frame member.

Abstract: A bicycle drop out comprising a seat stay mount having a first receiving portion, a chain stay mount having a second receiving portion, a back plate releasably connected to the seat stay mount and the chain stay mount, the back plate comprising a first member for engaging the first receiving portion and a second member for engaging the second receiving portion, the back plate comprising a third slot for receiving an axle, the slot cooperatively disposed between the seat stay mount and the chain stay mount, and the seat stay mount and the chain stay mount having a gap therebetween for receiving a belt.

Abstract: Methods, apparatus, and kits for converting multiple speed bicycles to single speed are disclosed. The methods include removing a cassette of gears from the hub of a bicycle gear and installing a single gear between two clamps that are releasably secured to the hub. In some embodiments, the clamps may be split-ring clamps with ends that are connected by a fastener. Kits according to embodiments of the invention may include a gear and one or more clamps.

Abstract: A cassette-based power measuring apparatus includes a power sensing arrangement mounted within a cavity defined by a hollow bicycle cassette. The power sensing arrangement includes a torque sensing assembly including torque sensing elements configured to measure a user applied torque. The torque sensing elements are in communication with an electronics assembly configured to process the measured data and transmit it to a receiver. The torque sensing assembly may comprise a torque tube or a series of bending beams secured between a rear plate of the cassette and a freehub. The torque tube or bending beams may include strain gauges bonded thereto for measuring strain induced by application of forces in response to user-applied power.

Abstract: A driving mechanism of the present invention includes a transmission disc, a transmission belt, a pair of cranks, a pair of arms, a pair of connecting bodies and a pair of pedals. The cranks and the arms are disposed on the frame of a bicycle, and the connecting bodies are disposed between distal ends of the cranks and the arms. Each pedal is disposed on the connecting body and is movable in an orbit. A vertical distance between the topmost point and the bottommost point of the orbit is H, and a horizontal distance between the front most point and a rearmost point is W, which satisfies the following relationship: H/W?5/3.

Abstract: A bicycle shifting control apparatus is provided with a gear selection signal receiving section, a gearshift determination section and a gearshift output section. The gear selection signal receiving section selectively receives a first gear selection signal and a first/second gear selection signal. The gearshift determination section determines a first rider shift intention for first gear shifting when the first gear selection signal is received, which meets a first signal criteria, and determines a second rider shift intention for performing second gear shifting in addition to the first shifting when the first/second gear selection signal is received by, which meets a second (different) signal criteria. The gearshift output section outputs a first gearshift signal upon determining the first rider shift intention or the second rider shift intention exists and outputs a second gearshift signal upon determining that the second rider shift intention exists.

Abstract: The wobble bearing axle assembly is used for engaging the upper body of a person for use in human powered vehicles and exercise equipment. The wobble bearing assembly converts linear input force derived by the operator into rotational force, which is directed toward the forward propulsion of a wheel. The wobble bearing axle assembly comprises a wobble bearing, a wobble axle, at least two engagement members a first arm and a second arm. The wobble bearing is disposed upon the oblique retainer of the wobble axle. The oblique retainer of the wobble axle is angled offset from the axis of the wobble axle Y. The engaging members are rotatably affixed with the first and second arms through pins which is longitudinally disposed through complementary orifices through the first and second arms and the engaging members respectively. In some preferred embodiments additional bearings are engaged with the pedals powered by the legs of the operator.

Abstract: A drive system for vehicles which do not use engines or batteries, such as road vehicles, with two or more wheels. The system relies on the incorporation of one or more drive shafts including a common shaft, and two sprockets, one with a fewer number of teeth and another with a greater number of teeth. The shafts extend between the central star and the pinion gear of the vehicle that moves the drive wheel so that the motion from the central star is transmitted to the smaller sprocket by the first shaft, and then from the larger sprocket of the shaft to the smaller sprocket of the next shaft and so on up to the pinion gear. With this system, the vehicle speed is increased many times as the product of relations between larger and smaller gears of each drive shaft in the number of shafts are used.

Abstract: A powered cycle vehicle having an adjustable mounting system for a power unit is described. A power unit is attached to a wheel mounting bracket which is affixed to the vehicle frame and carries the cycle wheel. The wheel mounting bracket may be a unitary structure that defines a wheel mount location and a power unit mount location. Adjustment of the power unit can be made independently of adjustment of the cycle wheel.

Abstract: There is described a bicycle (1) in which the rear wheel (3) is provided with a planetary hub gearbox (17) and is mounted on a single rear arm (13) positioned to one side of the rear wheel. The planetary gearbox comprises an outer casing (19) having an external bearing surface to engage a bearing mounted to the rear arm (13) of the bicycle, and releaseable mounting means for attaching the rear wheel (3) of the bicycle to the outer casing (19) of the planetary hub gearbox (17). The rear arm is of tubular or hollow construction, with the drive chain (15) or belt running enclosed within the rear arm (13).

Abstract: A folding electric bicycle in one embodiment includes a front case comprising a door and two auxiliary wheels; a pivotal head tube; two handlebars; a swivel fork telescopically connected to the head tube; a front wheel; a drive mechanism comprising a folding frame, a front chain wheel, two pedals, a rear bracket, a rear wheel, first and second rear chain wheels, and a main drive chain rotatably fitted around the front chain wheel and the first rear chain wheel; a detachable seat assembly; a battery pack; an electric motor for rotating the rear wheel; and a driven wheel interconnecting the electric motor and the second rear chain wheel. For collapsing the bicycle, a driver detaches the seat assembly, folds the frame, places the frame, the seat assembly, and the rear wheel in the case, partially disposes the front wheel in the case, and closes the door.

Abstract: A cassette-based power measuring apparatus includes a power sensing arrangement mounted within a cavity defined by a hollow bicycle cassette. The power sensing arrangement includes a torque sensing assembly including torque sensing elements configured to measure a user applied torque. The torque sensing elements are in communication with an electronics assembly configured to process the measured data and transmit it to a receiver. The torque sensing assembly may comprise a torque tube or a series of bending beams secured between a rear plate of the cassette and a freehub. The torque tube or bending beams may include strain gauges bonded thereto for measuring strain induced by application of forces in response to user-applied power.

Abstract: A powered, directionally steerable trailer jack that can be used to elevate and lower a trailer tongue and having a caster wheel assembly affixed to a lower end of the jack. The caster wheel assembly includes a shroud having the wheels' axle journaled for rotation at a lower end thereof along with a pair of shafts also journaled for rotation in the shroud and oriented parallel to the axle. A chain and sprocket arrangement provides a low-speed, high torque transmission between one of the shafts and the axle and a high-speed, low torque transmission between the other of the shafts and the axle. The trailer jack assembly can be tilted out of its vertical disposition to provide adequate clearance when the trailer is being pulled over uneven road surfaces. The power for driving the wheels may be provided manually by means of a crank for turning one or the other of the shafts or by an electric motor coupled one of the shafts.

Abstract: In a labor saving device for an electric and manual bicycle, a five-way joint of the bicycle includes a first driving bushing, a ratchet at the first driving bushing and connected to a rotating axle by an elastically activated first wedge, a large gear disc, such that the motive power of a chain is transmitted to the axle of a rear wheel, and a second driving bushing is sheathed to the first driving bushing, and the center hole of the second driving bushing is installed with a ratchet in a direction opposite to the first driving bushing, and coupled with the first driving bushing by an elastically activated second wedge during a rotation, and a transmission gear is installed on a lateral side and engaged with a driving gear on a motor axle, such that when the driving power of the motor drives the bicycle to move forward, the rotating second driving bushing will drive the first driving bushing with the large gear disc to rotate the axle of the rear wheel, and the axle with the left and right cranks will remain

Abstract: A bicycle includes front and rear disk brake units. The rear disk brake unit includes a rear brake lever unit, a rear brake disk, a rear caliper device, and a rear brake oil tube interconnecting the rear brake lever unit and the rear caliper device and having a first inner diameter. The front disk brake unit includes a front brake lever unit, a front brake disk, a front caliper device, and a front brake oil tube interconnecting the front brake lever unit and the front caliper device and having a second inner diameter greater than the first inner diameter so as to allow for approximate simultaneous clamping of the front and rear caliper devices on the front and rear brake disks, respectively, when the front and rear brake lever units are operated simultaneously.

Abstract: The invention relates to a scooter with a frame, at least one front wheel (12), at least one rear wheel (11) and with a steering gear (3, 6, 7), with which at least one front wheel (12) is tractable, whereby the scooter comprises on the left and/or the right side of the axis connecting the front and rear wheels, respectively, (longitudinal axis of the scooter) between the centre of a front wheel (12) and the rear end of a rear wheel (11) one laterally fold-out foot rest unit (1), which cannot exert the function of a crank, i.e., which cannot be rotated by 360° around a transverse axis of the frame which is perpendicular to the longitudinal axis of the scooter, whereby the foot rest unit(s) (1) can be folded out mechanically or by means of a motor and whereby upon mechanically folding out by force effect by the driver the foot rest unit (1) returns in its initial position upon discontinuation of the force.

Abstract: A cycle is disclosed that has at least one wheel with an axle rotatably mounted to a pair of opposing support plates. A seat is mounted to an upper end of an inverted Y-shaped seat support frame that includes two lower ends each pivotally mounted at a seat pivot to one of the support plates. A handlebar is mechanically coupled to each support plate with the handlebar being forward of the axle. In use, a user may balance on the cycle by manipulating the distance between the handlebar and the seat, facilitating the fine adjustment of the center of gravity of the cycle over the wheel.

Abstract: An Ellipticycle features a conventional bicycle front wheel assembly which is joined by two parallel lengths of bicycle tubing to a cast aluminum gear case within which a multiple speed transmission is enclosed. A crank shaft extends out through bearings in the left and right side halves of the gear case at its forward end with a crank arm fixed on each end of the crank shaft. A pedal beam is rotatably mounted near its center on a spindle fixed in the end each crank arm. A cam roller bolted on each side of the gear case at its aft end engages a short length of steel angle riveted -on the inside of each pedal beam providing a downward force to counter balance the weight of the rider on the cantilevered -forward portion of the pedal beam. A length of aluminum tubing is bolted on each side of the gear case at its aft end and encloses a drive shaft which passes out through bearings in the gear case.

Abstract: Disclosed herein is a human powered rail bike. The rail bike includes a chassis having a predetermined shape. Rail wheels comprising a pair of front wheels and rear wheels, roll along two rails of the track which are arranged side by side. A plurality of seats is mounted to the chassis. A one-way clutch capable of changing direction limits the rotating direction of an axle to one direction, that is, a forward direction or a backward direction. A plurality of crank pedals is rotatably mounted to the chassis, and is connected to the one-way clutch capable of changing direction via a chain. A direction conversion lever functions to convert the rotating direction of the one-way clutch. Further, a pair of brake units is provided to reduce the speed of the rail bike or stop the rail bike.

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: A two-wheeled vehicle, in particular a bicycle, with a rear suspension that includes a front chassis supporting a bottom bracket wheel, and a rear oscillating assembly supporting a rear drive wheel. The rear oscillating assembly is attached to the front chassis by a shock-absorber system, a top pivoting link with two pivot points at top and bottom, and a bottom pivoting link with two pivot points at rear and front. The top and bottom pivot points connect the top pivoting link to the front chassis and to the rear oscillating assembly respectively. The rear and front pivot points connect the bottom pivoting link to the front chassis and to the rear oscillating assembly respectively. Thus, during the compression of the shock-absorber system, the top pivoting link oscillates in relation to the chassis, and about an axis that is perpendicular to the chain line.

Abstract: Disclosed is a recumbent bicycle having a frame with at least one tubular member having a lumen. Mounted to the frame are a rear wheel assembly and a transmission assembly. The transmission assembly can include a first gear, a second gear, and a chain that extends from the first gear to the second gear and through the lumen of the at least one tubular member. Pedals and crank arms can mount to the second gear, which is slidable relative to the first gear to vary the position of the second gear relative to a seat mounted to the frame. A suspension assembly can mount a pair of front wheels to the frame at a location intermediate of the first portion and the second portion of the frame. The bicycle enables riders of different leg lengths to use the recumbent bicycle, while the suspension assembly cushions the rider during use.

Abstract: A bicycle includes an electric motor for driving a hydraulic actuator for a brake caliper of a brake disc of the front wheel of the bicycle. An electronic control unit receives wheel speed information from a wheel speed sensor, input pressure information from an input pressure sensor connected to a brake lever, and hydraulic pressure information from a hydraulic pressure sensor, which measures the hydraulic pressure for the brake caliper. The electronic control unit controls the hydraulic actuator based on the wheel speed information, the input pressure information from the input pressure sensor, and the hydraulic pressure information from the hydraulic pressure sensor such that the hydraulic pressure for the brake caliper is adjusted to prevent the bicycle front wheel from locking up when input pressure is provided via the brake lever.

Abstract: A foldable bicycle includes a head strut, a seat strut, and first and second bracing struts pivotally mounted to one another about four pivot axes such that lifting of a pivot joint of the first and second bracing struts towards the head strut results in turning of the first and second bracing struts to bring the bicycle into a folded position, where front and rear wheels are closer to each other and are held in tandem. A locking member is disposed to releasably lock the second bracing strut from turning relative to the first bracing strut when the bicycle is in a position of use.

Abstract: To improve the operability by a speed-change cable and to reduce the cable by selecting an adequate arrangement structure of the speed-change cable from a transmission case to an operating element of a handle on the front portion of a vehicle body. An arrangement structure of a speed-change cable is such that the speed-change cable is attached at one end to an arm portion of a derailleur and the speed-change cable is guided from the mounting portion through an outer cable mounting hole of a derailleur shaft to a through-hole opening at the upper front portion of a transmission case, and extends from the through-hole outside the case and along the front frame of the vehicle body substantially straight. The extended end is attached to a cable operation mechanism at the handle on the front portion of the vehicle body.

Abstract: A bicycle gear assembly has first and second sets of cog wheels, each having at least three cog wheels of various sizes including a largest cog wheel and a smallest cog wheel. These two sets are oriented so that the largest cog wheel of the first set is aligned with the smallest cog wheel of the second set and the smallest cog wheel of the first set is aligned with the largest cog wheel of the second set, the first and the second sets of cog wheels define at least a first, second and third pair of substantially aligned cog wheels. Additionally, a chain is mounted about a first pair of the aligned cog wheels and a gear shift assembly is adapted to move the chain from the first pair of cogwheels to the second pair of cogwheels and from the second pair of cogwheels to the third pair of cogwheels.

Abstract: Disclosed is a recumbent bicycle having a frame with at least one tubular member having a lumen. Mounted to the frame are a rear wheel assembly and a transmission assembly. The transmission assembly can include a first gear, a second gear, and a chain that extends from the first gear to the second gear and through the lumen of the at least one tubular member. Pedals and crank arms can mount to the second gear, which is slidable relative to the first gear to vary the position of the second gear relative to a seat mounted to the frame. A suspension assembly can mount a pair of front wheels to the frame at a location intermediate of the first portion and the second portion of the frame. The bicycle enables riders of different leg lengths to use the recumbent bicycle, while the suspension assembly cushions the rider during use.

Abstract: An electrical bicycle shift control device is provided that includes a handlebar mounting portion and an electrical shift control switch portion. The handlebar mounting portion is configured to be fixedly mounted in a free end of a handlebar. The electrical shift control switch portion is fixedly mounted to the handlebar mounting portion. The electrical shift control switch portion includes an operating member arranged and configured to be selectively moved relative to the handlebar mounting portion between a neutral position and a first actuating position.

Abstract: A bicycle crank speed change sprocket module includes a fixed star gear having a ratchet around its internal periphery, at least two planet gears and two chains pivotally coupled and axially disposed on both sides of a plate, and the plate is driven to rotate by a crank pedal, and the fixed star gear is engaged to the ratchets on the internal periphery of the planet gear and acted by the planet gear for a faster rotation; a freewheel sprocket freely and rotably coupled to the axle of the crank pedal and disposed proximate to the two chain wheels; and a ratchet disposed on the external periphery of the freewheel sprocket, a chain wound thereon, and the chain is engaged by at lest one chain gear, so that the rotary speed of the chain is much faster than that of the crank pedal for a speed change effect.

Abstract: A bicycle including an impact detection device and a monitoring central processing unit connected to said impact detection device.

Abstract: A cycle that has two fixed frame arms extending down on each side of the head tube axis, and a steering arm rotatably mounted in the head tube extends down between the frame arms and has a laterally off-set lower portion. A mounting member is fixed to the lower end of the steering arm and has a hollow cylindrical wheel support section which carries the inner portion of a bearing or bearings for the front wheel, allowing this wheel to rotate while being steerable by the steering arm. A fixed pedal axle extends freely through the hollow wheel support section and is rotatably supported by lower ends of the frame arms, this axle being connected by drive means to one of the cycle's front or rear wheels. Parts of the mounting member have an enlarged interior space relative to that in the wheel support section to accommodate steering movement of the mounting means relative to the pedal axle.

Abstract: A bicycle sprocket structure installs three pairs of embedding grooves at the periphery of an axle bushing of an axle base for installing brackets and latch members, and a plurality of latching points for latching the latch members are separated by 60 degrees. With the ratchets disposed on an internal side of the sprocket axle hole, the ratchet can be latched and linked with a pair of latch members in the shortest time, when a pedal is stepped clockwise to drive the sprocket to rotate clockwise after an idle run, so as to reduce the intermittent time and provide a smoother operation. Meanwhile, the number of latch members is increased, such that when the sprocket is latched and linked with the axle base, the remaining latch members constitute a multi-point contact support to enhance the stability of the operation and avoid damages to the related component due to a stress.

Abstract: Bicycles are disclosed which include a rear wheel suspension system. The rear wheel suspension of the present bicycles are designed to move an instant center to track a chain torque line of the bicycle and generally improve performance of the bicycles. In certain embodiments, the rear wheel suspension system includes a shock absorber apparatus attached to the main frame of the bicycle. In additional embodiments, the shock absorber apparatus includes a bell crank or a rotary torsion spring. Embodiments are also described which include a gear box. Methods of improving bicycle performance by tracking a chain torque line with an instant center are also disclosed.

Abstract: A bicycle shift control apparatus comprises a threshold value setting unit that sets a threshold value of a running condition for shifting a bicycle transmission, a decision unit that decides if a current running condition value passes the threshold value, and a tentative shift unit that sets a tentative shift of the bicycle transmission when the decision unit decides that the current running condition value passes the threshold value. A canceling unit cancels the tentative shift if the decision unit decides that the current running condition value varies from a previous running condition value by a determined value.

Abstract: A bracket assembly for mounting a motor or other control device to a bicycle frame includes a bracket base for supporting the control device at least partially above a chain stay, and a bracket support extending from the bracket base for coupling the bracket base to at least one of a chain stay, a seat stay, a seat tube, or a bottom bracket shell.

Abstract: A bicycle control apparatus comprises a mounting member structured to be attached to a bicycle, a control unit structured to be mounted to the mounting member and a battery unit structured to be detachably mounted to the control unit above the control unit.

Abstract: A scooter includes a main body, a rear wheel mounted on a rear end of the main body, and an operation mechanism mounted on the main body and connected to the rear wheel to move the rear wheel. When in use, the rider steps on the two pedals to move the scooter forward manually. Alternatively, the scooter is moved forward automatically by operation of the motor. Thus, the scooter is operated manually by the user's feet or operated automatically by an electric power. In addition, the operation mechanism is detachably mounted on the main body, thereby facilitating the rider using and folding the scooter.

Abstract: The present invention provides a chain alignment mechanism of a transmission for a bicycle which includes a drive sprocket wheel which is rotatably driven by a crankshaft, a driven sprocket wheel which is drivably connected with an output shaft which is rotated in an interlocking manner with a drive wheel of the bicycle, and an endless chain which is wound around the above-mentioned drive sprocket wheel and the above-mentioned driven sprocket wheel, wherein even when the chain of the transmission for the bicycle is deflected or slackened due to a driving manipulation of the bicycle, the vertical vibration of the bicycle or the like, the chain is reeled in the drive sprocket wheel in a row in an aligning manner. A chain guide member is arranged on an endless-chain-reel-in side of the above-mentioned drive sprocket wheel.

Abstract: Disclosed is a recumbent bicycle having a frame with at least one tubular member having a lumen. Mounted to the frame are a rear wheel assembly and a transmission assembly. The transmission assembly can include a first gear, a second gear, and a chain that extends from the first gear to the second gear and through the lumen of the at least one tubular member. Pedals and crank arms can mount to the second gear, which is slidable relative to the first gear to vary the position of the second gear relative to a seat mounted to the frame. A suspension assembly can mount a pair of front wheels to the frame at a location intermediate of the first portion and the second portion of the frame. The bicycle enables riders of different leg lengths to use the recumbent bicycle, while the suspension assembly cushions the rider during use.

Abstract: A structure of an automatic speed change device for bicycle gearbox is disclosed in this present invention. The above-mentioned design can be applied to a bicycle with a rear wheel speed change device. According to this invention, the automatic speed change device is able to control the allotting device of the rear wheel speed change device to transfer the chain into suitable gear by the treading rat of the user. This design can simplify the manual gear shifting process in the prior art for controlling the rear wheel speed change device. Therefore, this invention can make riding bicycle more easily and widely for all age.

Abstract: A drive for a bicycle includes an auxiliary sprocket wheel assembly having two sets of at least three sprocket wheels associated in each assembly attached to a common axle, one of said sets having a larger diameter than the other set. Each set is provided with a derailleur for changing associated sprocket chains from one sprocket of the set to another. Use of the auxiliary sprocket wheel assembly together with derailleurs on the regular pedal and drive wheel sprockets enables very high speeds to be attained by the average rider.

Abstract: The present invention 10 discloses a new and novel tricycle with adjustable linkage 48, 54 for varying the drive power for either foot or hand power. Furthermore, the linkage 44, 52 can also be used to vary the wheelbase. Moving the front wheel 14 toward the rear wheels 22 provides for a tighter turning radius. Moving the front wheel 14 away from the rear wheels 22 provides for greater stability at high speed. In addition, the linkage 48, 54 provides for the selective placement along a horizontal and/or vertical plane relative to the seat 24 allowing persons of varying size to comfortably position the pedal assembly 16. Additionally, the present invention 10 has a cantilevered seat frame 30 with the seat 24 at one distal end and the other end forming a yoke 32 connected to the front wheel steering pivot column 34 whereby left movement of the seat 24 results in a right turn of the front wheel 14 and a right movement of the seat 24 results in a left turn of the front wheel 14.

Abstract: A flywheel power unit that can be inserted into a variety of machines. The standardization of the power unit means that the more expensive gearing, clutch and flywheel components do not have to be duplicated in each human powered machine. Standard bicycle gearing components can be assembled with a modified clutch for a typical motorcycle to create an inexpensive human powered flywheel power unit. As the user pedals, power is stored in the flywheel. The flywheel axle is connected to a transmission transfer gear that turns a transmission input gear for a transmission with multiple gears in a gearing ratio of 10:1 to 0.8:1 (which is typical for a motorcycle transmission.). A transmission input gear and the transmission transfer gear are approximately a 1:1 gearing ratio. A transmission output gear is attached to the transmission that provides power output from the flywheel only when a clutch within the transmission in engaged.

Abstract: An electronic shift control apparatus is provided for a bicycle having a transmission with a plurality of speed stages. The apparatus comprises a shift unit that provides signals for shifting the transmission, a restriction selecting unit operated by a user to select a restricted speed stage, and a restricting unit operatively coupled to the shift unit and to the restriction selecting unit. The restricting unit prevents the shift unit from providing signals to shift the transmission to the restricted speed stage.

Abstract: Improved mechanical structure for increased efficiency in the transfer of the peddling force applied to a pedal crank assembly to the rear wheel of a bicycle is disclosed. This structure increases efficiency by decreasing the loss of exerted energy when peddling at dead spots, which dead spots are the common terminology used to refer to when the legs are either at down-stroke and up-stroke positions.

Abstract: A human powered drive units each including a pair of a rotatable member having a sprocket and a supporting member having a sprocket, which are arranged up and down, and including a chain extended around the rotatable member and the supporting member, are disposed at left and right sides, respectively. The left and right rotatable members 1, 100 are fixed on a driving shaft 15. A chain ring 6 on which the load is applied is mounted on the driving shaft between upper rotatable member 1 and rotatable member 100. In each of the units, constraining means including a free crank (10 for the right-hand unit, and 1000 for the left-hand unit) and arm (11 for the right-hand unit, and 1100 for the left-hand unit), is provided so as to maintain perpendicularity of a shaft of the pedal relative to the plane in which the chain moves.