Abstract: A rotation powered vehicle drive mechanism includes an elongated chassis slot disposed within a respective lateral exterior portion of a chassis assembly. An elongated platform slot is disposed within a respective lateral portion of a platform assembly, and is configured such that it is substantially opposed to the chassis slot. The platform assembly is pivotally secured to the chassis assembly thereby allowing for rotation through a platform rotation angle of the platform assembly with respect to the chassis assembly about a rotation axis. The rotation of the platform assembly results in an increase or decrease of a variable slot height which is measured between the chassis slot and the platform slot. A cart assembly is disposed between the chassis assembly and the platform assembly, and is operatively coupled to the chassis slot and to the platform slot.

Abstract: A step sporting equipment with a double transmission mechanism, wherein a transmission mechanism and a treading mechanism are located on both sides of a frame body respectively. Each transmission mechanism at least comprises a front wheel disc, a rear wheel disc and a driving piece. Each treading mechanism is connected to the corresponding transmission mechanism. When the user treads on each treading mechanism, each treading mechanism can compel the corresponding transmission mechanism to work. In addition, as the front wheel disc and rear wheel disc are linked by a driving piece, there is higher moving phase. Therefore, with two transmission mechanisms, the dimensional discrepancy of elements resulted from tolerance can be tolerated effectively, and the step sporting equipment can remain in normal operation.

Abstract: A ride-on toy includes a handle unit; a front leg unit including a front leg and a front wheel mounted to the front leg; a rear leg unit including a rear leg and a rear wheel mounted to the rear leg; a pedal unit; a saddle unit; and a chassis. In a first state, in response to a first downward force applied to the saddle unit and a forward force applied to the handle unit, the front leg moves with the front wheel forward and away from the rear leg, and the rear leg stays still. In a second state, in response to a second downward force applied to the pedal unit and a rearward force applied to the handle unit, the rear leg moves with the rear wheel forward and toward the front leg, and the front leg stays still.

Abstract: A drive system comprises a frame, a first extension member, a second extension member, a crank shaft, a hub, a bearing, a cross shaft, a first arm assembly, a second arm assembly, a first chain assembly, a second chain assembly, a first rotatable pedal, a second rotatable pedal, and a steering column. The first arm assembly comprises a first frame arm, a first connecting arm, a first main arm, and a first crank arm. The second arm assembly comprises a second frame arm, a second connecting arm, a second main arm, and a second crank arm. The first arm assembly further comprises a first roller track assembly. The second arm assembly further comprises a second roller track assembly.

Abstract: A tri-mode collapsible scooter includes: a deck; a stem; handlebars; a head tube; a neck hinge; a deck hinge; a wheelset; a neck control; and a deck control. The deck includes: a front deck section; a rear deck section; and a deck hinge interposed between the front deck section and the rear deck section. The neck control is configured to release the neck hinge for transition between an open neck position and a closed neck position. The deck control is configured to release the deck hinge for transition of the deck between an open deck position and a closed deck position. The deck hinge occupies the open deck position and the neck hinge occupies the open neck position in a ride mode; and the deck hinge occupies the closed deck position and the neck hinge occupies the closed neck position in a tow mode.

Abstract: A safe two-wheeled self-balancing vehicle includes two power wheels, a motion sensor, a control circuit, a chassis structure, a direction control input device, and a power source. The power wheels are installed at two sides of the chassis structure. The motion sensor is connected to the control circuit and fixed to the chassis structure opposite thereto. The direction control input device is connected to the control circuit. The control circuit drives the power wheels. A protection wheel support is disposed at a front side or both the front side and a rear side of the chassis structure. A floating protection wheel is installed at a front end of the protection wheel support. The protection wheel support is connected with the chassis structure or a structure of the protection wheel support, which enables the floating protection wheel to move freely in a vertical direction with respect to the chassis structure.

Abstract: A scooter to be propelled by a rider is disclosed herein. The scooter comprises a frame including a base capable of supporting the rider standing thereon and having a first side and a second side, and an arcuate bar having a lower end and an upper end. The base has a slot formed at the second side thereof. The arcuate bar extends upwardly from the first side of the base from the lower end thereof. A front wheel is coupled to the upper end of the arcuate bar by a support member, and a rear wheel is coupled to the base at the second side thereof such that the rear wheel is extending into the formed slot thereat. A handlebar is provided at the upper end of the arcuate bar and in connection with the support member to provide directional movement to the front wheel.

Abstract: A bicycle electric device comprises an electric actuator, a controller, and a switch. The electric actuator is configured to be operated in response to an operation of a bicycle electric operating device. The controller has a pairing mode in which the controller receives identification information of at least one electric telescopic apparatus. The switch is electrically connected to the controller to set the controller to the pairing mode based on a user input received by the switch.

Abstract: A dual pedal driven scooter includes a frame with a front end and a rear end; a front wheel and a rear wheel connected to the frame at the front end and the rear end, respectively; a driving mechanism configured to drive the rear wheel to in turn drive the scooter; and a pedal configured to drive the scooter; wherein the driving mechanism has a driving linkage that links the pedal and the rear wheel, and the pedal is fixedly connected with the driving linkage so as to drive the rear wheel by pulling the driving linkage. The invention is more comfortable and safe to use, and not only is suitable for both playing and fitness but also suitable for a short-distance walk.

Abstract: A bicycle telescopic apparatus includes a first tube, a second tube, an actuating member, and a hydraulic positioning structure. The first tube defines an axial direction. The second tube is telescopically received in the first tube in the axial direction. The actuating member is movable relative to the first tube in the axial direction of the first tube. The actuating member is configured to move the second tube relative to the first tube in the axial direction. The hydraulic positioning structure is configured to position the first tube and the second tube relative to each other in the axial direction.

Abstract: A scooter (5) includes a head tube (50); a riser tube (51) freely and rotatably pivoted with the head tube (50), the upper end of the riser tube being provided with a handle (511); a preceding runner (52) provided at the lower end of the riser tube (51); a left carrier (53) and a right carrier (53) both connected to the head tube (50); a left back runner (54) and a right back runner (54) provided at the left carrier (53) and the right carrier (53) respectively, which support the scooter (5) alone with the preceding runner (52); the front end of each carrier (53) is provided with a cantilever (533) respectively. The left cantilever (533) and the right cantilever (533) are both provided at the head tube (50) in a suspending form of swinging back and forth freely. Provided between the left cantilever, the right cantilever (533) and the head tube (50) is a holding means (55) enabling the left carrier and the right carrier to perform back and forth alternate swing and displacement action.

Abstract: A foldable vehicle includes head and chassis assemblies hinged together, and a foldable vehicle lock. The head assembly includes upper and lower heads hinged together. The chassis assembly includes front and rear chassis hinged together. A foldable linkage folds and unfolds the foldable vehicle. The foldable linkage is hinged with the head assembly, the front and rear chassis such that the head assembly, the front and rear chassis are driven to conduct relative movement to perform the corresponding foldable and unfoldable operations. The foldable vehicle lock includes a head locking assembly to lock the upper head with the lower head, a chassis locking assembly to lock the front chassis with the rear chassis, and a whole vehicle locking assembly to lock the head assembly with the chassis assembly. The chassis and whole vehicle locking assemblies are controlled synchronously by a linkage controller.

Abstract: A folding tricycle, having a first rear frame rotatably connected on a first end thereof with a first end of a first bottom frame; a second rear frame rotatably connected on a first end thereof with a first end of a second bottom frame; the first rear frame rotatably connected on a second end thereof with a first rear wheel; the second rear frame rotatably connected on a second end thereof with a second rear wheel; the first and second bottom frames rotatably connected on second ends thereof with a first end of a front frame; a seat frame rotatably connected on a front end thereof with one of a second end of the front frame and a front bearing member; a front wheel connected with a handlebar through one of the front frame and the front bearing member; first and second support frames connected respectively on first end thereof with the first and second rear frames and configured to stabilize the tricycle in an unfolded position; and a locking mechanism configured to lock the tricycle in an unfolded position; t

Abstract: A self-propelled skateboard with at least one front wheel, a rear wheel, and a board, that is propelled without the rider's foot touching the ground. A driving force is generated the rider's weight is continuously shifted up and down in synchrony with the rocking motion of the eccentrically mounted rear wheel, which causes the board to be repeatedly pushed down and bounced back. Mounting multiple axles and one-way sprag clutch bearings on the rear wheel allows the rider to propel the board up inclined surfaces and to stop his/her motion and rest on the board, yet keep the skateboard continuously running.

Abstract: An improved pedal driven scooter may have a mainframe, a joint-frame, a front balance and steering mechanism, one or two front steering wheel(s), a rear drive wheel, and a drive mechanism. The pedals are pushed rearward and move independent of each other within an adjustable angle range. The drive mechanism translates the alternative movement of the pedals into unidirectional rotation, which is further multiplied, and drives the real wheel. A leaning control mechanism allows a rider to stay mounted when the vehicle is stopped. The scooter can be folded with the joint frame pivoting at both ends, such that the rear-wheel docks between or near the front wheel(s) and the scooter can be carried as if it were a carry-on luggage. The scooter may be further folded for storage with the help of a folding hinge which connects a lower part and an upper part of the front steering mechanism.

Abstract: A drive train for a treadle scooter using a locking roller clutch on each side of a drive wheel substantially equalizes drive line pull at actuation pulleys operatively associated with the locking roller clutches as a user pivots a rocker board having its ends attached to ends of the drive line.

Abstract: A direct-drive double wing scooter includes a frame, an actuation assembly, a drive assembly, a transmission assembly and a rear wheel disposed at rear end of the frame. The drive assembly includes a first turning shaft and a second turning shaft, and the first turning shaft is disposed at a front end of the frame, the second turning shaft is disposed at the rear end of the frame. A distance between the second turning shaft and the wheel axle of the rear wheel is less than a diameter of the rear wheel, preferably, a ration of the above distance to a radius of the rear wheel is in the range of 0.18-1.38. The direct-drive double wing scooter is suitable for riding on the flat road without slope or with a little slope, and further suitable for riding on the climbing section with a large slope.

Abstract: A drive assembly for a human-powered machine may include a front crankset spaced from a rear crankset, each rotatably coupled to a frame. Crank arms of the rear crankset are longer than crank arms of the front crankset. A left foot platform and a right foot platform each have a rear portion rotatably coupled to a distal end portion of the corresponding rear crank arm, and a front portion in sliding and rotating engagement with a distal end portion of the corresponding front crank arm. The front crankset and the rear crankset may be mechanically coupled to each other, such that the two cranksets turn together at the same rotational speed in terms of RPM. The two cranksets may also be operatively connected to the hub of a wheel.

Abstract: A direct-drive double wing scooter includes a frame, an actuation assembly, a drive assembly, and a transmission assembly. The actuation assembly includes left and right swing wings each pivoted close to a front end of the frame through a pivot. The drive assembly includes a first turning shaft and a second turning shaft penetrating two sides of the frame. A distance between the first turning shaft and the pivot is defined as a first distance. A distance between a rear end of the right swing wing is defined as a second distance, or a distance between a rear end of the left swing wing is defined as a second distance. The first distance is in the range of 0.10-0.65 times the length of the second distance. The direct-drive double wing scooter provides a simple and reliable drive way and has transportation, amusement and fitness effects.

Abstract: A pedal-propelled transmission mechanism, applied in a workout equipment; the workout equipment including a deck, a front tube fixed at a front end of the deck, and a handle fixed on a top end of the front tube; the pedal-propelled transmission mechanism comprising a driving chainring having a center axle pivotally connected to a proximity of a rear section of the deck, a left pedal mechanism, and a right pedal mechanism, whereby the structure of the pedal-propelled transmission mechanism is simple that reduces the production cost and time, and easily repair and change when the parts are broken.

Abstract: A motorized wheel assembly adaptable to skateboards provides drive motor and power sources and controls for the directed control of forward or backward propulsion of the skateboard using throttle and braking controls, the motorized wheel, and all skateboard wheels. Weight transfer assemblies for the motorized wheel transfer a portion of a skateboard rider's weight through the front mounted motorized wheel to the ground surface creating sufficient traction for the motorized wheel to propel the skateboard. One weight transfer assembly embodiment provides a pivoting, compression based mounting bracket. Separate embodiments of the weight transfer assemblies include single or dual shock absorbers.

Abstract: A stepper scooter provides step pads that are connected to a laterally arranged rocker bar assembly. Vertical movement of the step pads causes the rocker bar assembly to reciprocally pivot which translates drive chains which cause rotation of the drive wheel or wheels. The rocker bar assembly comprises two four bar linkages between a center fork and each step pad. An alternate embodiment uses the rocker bar to reciprocally rotate a gear axle which drives a bevel gear arrangement to rotate the drive wheel or wheels via one-way bearings. Another embodiment incorporates a chain and sprocket drive between the bevel gear arrangement and the drive wheel or wheels, wherein the one-way bearings are replaced with a one-way sprocket drive.

Abstract: A drive mechanism for a vehicle is disclosed, said drive mechanism converting the reciprocating clockwise-counterclockwise motion of an input shaft into continuous rotation of an output shaft by means of two one-way clutches mechanically coupled to the input shaft and the output shaft, said one-way clutches having their power stroke in opposite directions of rotation. In an embodiment, said drive mechanism can be contained in a wheel hub and used for human-powered vehicles such as scooters, bicycles, wheelchairs, rollerskates, or other vehicles.

Abstract: “IMPROVEMENTS INTRODUCED IN AN ELLIPTICAL DRIVE MECHANISM AND A STEERING MECHANISM, APPLICABLE TO VELOCIPEDES IN GENERAL,” more specifically, it is about elliptical velocipedes (1) of the bicycle, tricycle, and scooter type, with said velocipedes having a tubular crossmember (2A) where the basic components are mounted, namely: fork (2b), handlebar mounting (2c), front wheel, rear wheel, center sprocket, and cranks, as well as an elliptical drive mechanism (M1) and a steering mechanism (M2). The structural frame (2) has a crossmember (2A), whose end is aligned with the imaginary center of the rear wheel, a tubular transverse shaft with tubular connections (3a) installed on its end portions, while a guide rod (3) that functions as a path for the sliding of the respective block (4) is attached to each of said connections.

Abstract: A portable conveyance has a deck, a front drive wheel proximately disposed to a first end of the deck and a rear drive wheel attached proximate to a second end of the deck. A guide roller assembly attached proximate to the rear drive wheel. The guide roller assembly has a first rotational axis and the rear drive wheel rotates about a second rotational axis different from the first rotational axis and parallel to the first rotational axis, such that the guide roller assembly is not in contact with a substantially flat surface when the first and rear drive wheels are in contact with the substantially flat surface, and the guide roller assembly is in rotational contact with the surface when the deck is lifted into a towing position.

Abstract: A propulsion system for human powered vehicles includes an outer lever having an input end and an output end. An orbiting sprocket is coupled to the output end of the outer lever. A fixed sprocket is also provided, with the orbiting sprocket orbiting around the fixed sprocket. A closed tension-bearing member engages an outer circumference of both the orbiting sprocket and the fixed sprocket. A driveshaft is co-axial with the fixed sprocket, the driveshaft being free to rotate with respect to the fixed sprocket and the crank lever being fixedly connected to the driveshaft and rotationally connected to the orbiting sprocket. A chassis is propelled by the driveshaft. Wherein application of a force on the input end of the outer lever causes the orbiting sprocket to orbit around the fixed sprocket and thereby rotate the crank lever to impart rotation to the driveshaft and propel the chassis.

Abstract: A pedal scooter transmission mechanism capable of increasing more motion energy in the pedal scooter, comprising a driving chainring pivotally connected to a proximity of a middle section of the deck, wherein the driving chainring is connected with the driven chainring via a transmission element, whereby the rear wheel and the driven chainring are being driven; two pedal mechanisms, every pedal mechanism comprising a pedal which is horizontally installed on both sides the deck near the middle section, and drives the center axle by a driving connecting rod assembly, wherein the total length of driving connecting rod assemblies is different, so that one of the pedal can generate more torque force and make the pedal scooter produce more motion energy.

Abstract: A bicycle includes: a frame that supports a front wheel and a rear wheel; a pair of up-and-down links that are respectively provided on a right side and a left side of the frame in a front view; a pair of pedals that are respectively supported by the pair of up-and-down links; and a drive unit that drives the rear wheel. A front end of each of the pair of up-and-down links is pivotally attached to the frame, and a rear end of each of the pair of up-and-down links is respectively connected to each of the pair of pedals. The drive unit includes a pair of crank arms that are arranged point-symmetrically at an angle of 180° in a front view, and a force that depresses each of the pair of pedals so that the pair of pedals alternately swing is transmitted to the pair of crank arms through the pair of up-and-down links. The bicycle further includes a horizontally-holding mechanism that holds each of the pair of pedals approximately horizontally while rotating of each of the pair of up-and-down links.

Abstract: A system for packing a human-powerable vehicle uses an inner annular module that can be incorporated into a wheel. The inner annular module has a open central region, attachment points for steel spokes in tension that radiate out from the annular module, and a feature to facilitate the detachable attachment of a hub by a user, so that a user detachable hub can be installed in the open central region when the annular module is used as part of a vehicle wheel. Removal of the hub facilitates the placement of the module over the axle of a second wheel. The attachment points for the spokes that radiate outward are in a circular configuration that is concentric with the center of the annular module. The attachment points for the spokes are on two parallel planes.

Abstract: The present application is directed to a drive system. The drive system comprises a drive shaft and a driven wheel assembly. The wheel assembly includes a split axle coupled perpendicular to the drive shaft. An overrunning clutch is coupled between each section of the split axle and the drive shaft. A wheel is coupled to spin with each axle section. The wheels receive power from the drive shaft and are driven so that when power is applied from the drive shaft to the driven wheel assembly, whichever wheel that is spinning the slowest receives the power. The drive system may be incorporated into any number of vehicles to improve traction around turns, improve wheel slippage on uneven terrain and generates new options for how and where vehicles may be ridden.

Abstract: The present invention discloses a. scooter device comprised of: a chassis body which connects the following components: a steering arrangement, one front wheel; two back wheel connected to at least one axle, where each wheel moves freely around the axle. a pedaling mechanism including a pedal normally positioned at an upper position above the standing platform connected by a shaft to a pedal axle and a spring connecting the pedal shaft to the chassis body for returning the pedal to upper position, a pedal transmission mechanism for translating the pedal motion into rotational motion of at least one back wheel's axle and a horizontal transmission mechanism arranged for transferring the rotational movement to at least one back wheel, said mechanism including at least one hollow cylinder attached on one side to a rolling bearing which is of clamped on at least one back wheel axle, and on the other side to one of the back wheels. The back wheel's cog wheel is clamped on the hollow cylinder.

Abstract: A concealed rear wheel suspension device for a scooter comprising a frame component further comprising a frame cover, a frame and a stop fixedly connected to the rear of the frame, a suspension spring component further comprising a link, and a back fork; wherein a through hole is provided on two sides of the rear of the said frame, a threaded hole is provided on the upper surface of the said stop, two through holes are provided on the said frame cover corresponded to the said threaded holes; wherein a threaded end of the link sequentially crosses through the stop, a compression spring and a gasket, locked by a nut; wherein the back fork is rotatably connected to the frame through a bolt, and the a hole end of the link.

Abstract: A bicycle with a rear drive assembly configured to allow pedal boards to be pivotable while moving in an elliptical trajectory and which allows a cyclist to ride in an erect position is disclosed. A front end of each of the pedal boards is pivotably connected to an end of a crank and each of the pedal boards is connected to or integral with a guide rod extending rearwardly from the pedal board. The guide rods are supported by a rear drive assembly comprising a transverse tube that is horizontally connected to a frame of the bicycle. A roller is mounted at each end of the transverse tube. Each roller has a groove which accommodates the cross-section of the guide rod.

Abstract: This invention is a bicycle for a standing rider including a frame, a drive support attached to a front support member having a front end and a rear end; a front crank arm rotationally attached to the front end of the drive support and attached to a front sprocket; a rear crank arm rotationally attached to the rear end of the drive support and attached to a rear sprocket; a pedal attached to the front crank arm and the rear crank arm so that when the crank arms rotate, the pedal remains parallel to the ground; a spacing member attached to the drive support and the mail support member so that the drive support is disposed parallel to the ground.

Abstract: A digital podium apparatus includes a base, front and rear pairs of wheels and a single wheel at a front of the base. A pair of front pedals can be moved by a user's toes to rotate the front wheels forward and a pair of rear pedals can moved by the user's ankles to rotate the rear wheels backward. A divider is disposed between the front and rear pedals. A height-adjustable pole is coupled to both the single wheel and a digital podium frame. A handle is disposed on the digital podium frame, and the user can change a direction of the base during movement of the digital podium apparatus by rotating the handle. A plurality of computer tablets are disposed on the digital podium frame. The digital podium apparatus may be ridden into a classroom and used to project and relay teaching material to students in the classroom.

Abstract: An exercise device (20) includes a frame (22) and a drive mechanism (100) attached to the frame. The drive mechanism includes a first shaft (122) having a first fixed gear (128) and a second shaft (124) having a second fixed gear (130). The first fixed gear and the second fixed gear are mechanically linked to cause the first shaft to rotate in an opposite direction than the second shaft. A first linear input is mechanically linked to the first shaft and a second linear input is mechanically linked to the second shaft.

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

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

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

Abstract: A mobile ergonomic exercise tricycle apparatus and related method of use, comprising: two front wheels; one rear wheel; two front handles, one for each hand of a rider; two pedals, one for each foot of the rider; and a connection between the pedals and the rear wheel such that actuation of the pedals by the rider's feet rotates the rear wheel to move the tricycle forward; wherein: the tricycle does not comprise any seat for sitting; and the pedals are positioned relative to the front handles such that when the rider's feet are atop the pedals and the rider's hands are touching the front handles, the rider is forced into a substantially upright, standing position when the apparatus is at rest and in motion.

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: A bicycle seat height adjustment method is provided for changing a height of a bicycle seat. The method includes operating an operating device to output a seat raising or lowering command to adjust the seat height. The method further includes releasing the operating device after the operating of the operating device. If a raising command has been outputted, then the method further includes raising the bicycle seat to a higher seat position than a previous seat position existing immediately prior to the seat raising command after releasing the operating device. If a lowering command has been outputted, then the method further includes lowering the bicycle seat to a lower seat position that is lower than a previous seat position existing immediately prior to the seat lowering command after releasing the operating device.

Abstract: A four wheel stepper bike having a body with an internal chamber containing a drive mechanism for transmitting power to a wheel, a steering linkage, and a brake. Foot pedal units on opposite side of the body are moved by an operator's feet to apply force to the drive mechanism. A steering column with handles hinged to the body and connected to the steering linkage is selectively movable to steer the bike and move between upright and folded positions. Bumpers attached to an end of the body support the bike in an upright position on a support surface when the steering column is in the folded position.

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

Abstract: A slider is provided which can travel ahead by placing a user's foot on a board and stamping the ground with the other foot like a known kick board or which can exercise a user by causing shafts each having a rear board fixed thereto to sufficiently extend backward and moving the shafts at symmetric angles relative to each other and can spontaneously travel ahead by means of waveform-like actions using rear casters attached to the bottoms of the rear boards.

Abstract: A bidirectional propulsion caster assembly is disclosed for enabling a rider to generate bi-directional motion from a ride-on device. A mounting bracket is attachable to the bottom of the device and defines a pivot axis extending in a generally transverse direction across the bottom of the device. A rocker bracket and caster shaft having a caster shaft axis are attached to the mounting bracket and pivot about the pivot axis along an arc between first and second positions. A wheel bracket is mounted to and rotates about the caster shaft. A wheel is mounted to the wheel bracket for rotation about a wheel axis angularly offset from the caster shaft axis. One or more changeable pivot stops may be attached to the rocker bracket or the mounting bracket and effective to further define the available arc of rotation.

Abstract: Multiple pivot points on a bicycle frame provide for automatic adjustment of the saddle of the bicycle during usage of the bicycle within a range of positions. The bicycle will normally position the saddle in a neutral position area of the range of positions during steady pedaling over level ground. During sprinting the bicycle will position the saddle in a sprinting position area of the range of positions where the saddle raises and moves forward to maintain contact with the rider to support the rider. During downhill riding the bicycle will position the saddle in a downhill position area of the range of positions where the saddle drops and moves rearward while supporting the rider. A saddle locking assembly permit the rider to prevent the saddle from raising to permit the rider to raise off of the saddle when desired.

Abstract: An elliptical stroller assembly including a stroller frame assembly with a stroller assembly mounted thereto, first and second wheel assemblies, a propulsion frame assembly and propulsion assembly. The propulsion frame assembly and the propulsion assembly may be in an extended or in a retracted configuration with respect to the stroller frame assembly and the stroller assembly. In the extended configuration, the propulsion assembly propels the stroller frame assembly and the propulsion frame assembly is removably secured to a first fixed mount. In the retracted configuration, the propulsion assembly does not propel the stroller frame assembly. At this position, the propulsion frame assembly is removably secured to a second fixed mount.