Abstract: A three wheeled scooter comprises a chassis having forward and aft ends with a front wheel non-pivotally mounted to the forward end and a pair of rear wheels coaxially mounted to the aft end. The chassis defines a longitudinal axis and includes a support assembly and a handle assembly extending upwardly from the support assembly. The rear wheels are configured to be angularly yawable relative to the longitudinal axis between a neutral position and a yawed position. Steering of the scooter is thereby effectuated by angular yawing of the rear wheels relative to the longitudinal axis such as by asymmetric loading of one of opposing sides of the support assembly.

Abstract: The present invention pertains to a collapsible scooter with tri-footboard providing with a supporting stem attached to the frame body and two steering pivots mounted to both sides thereof for respectively sliding toward a single direction. Further, two auxiliary footboard devices attached their front ends to the steering pivots and their rear ends to the rear wheels, so that the auxiliary footboard devices are positioned toward reverse directions through swinging the steering pivots. In this manner, the rider can alternatively ride the scooter by foot-propelling with the frame footboard or by wriggling rider's buttocks while treading on the auxiliary footboard devices so as to achieve dual operations. Also, the present invention is collapsible for easy storing and carrying and increases its convenience.

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: The frame includes at its rear portion two bases (12, 13) extending substantially horizontally rearwardly so as to define between them a space for the reception of a rear wheel, and two stays (14, 15) extending obliquely toward one respective end of the bases (12, 13) and being connected thereto at an acute angle by connection elements, a pair of recesses for a rear wheel axle being disposed substantially at the intersection of the stays (14, 15) with the bases (12, 13) . Each recess of the pair of recesses has a first notch with a semicircular bottom (23) provided at one flattened end of a base and a second notch with a semicircular bottom (24) provided at a flattened end of a stay and disposed facing the first notch (23) such that the semicircular bottoms will be aligned with each other.

Abstract: A portable stroller that includes a collapsible frame that has two Y-shaped support units and a plurality of links which collapsibly mount a seat section thereon.

Abstract: A foldable bicycle has a rear frame, a folding assembly and a front frame. The rear frame has a seat tube, a bottom bracket, a rear fork and a rear wheel. The folding assembly is connected to the rear frame and has a supporting device, a rotating jacket and a locking device. The supporting device is connected to the bottom bracket and has a mounting bracket and a supporting element. The mounting bracket is connected to the bottom bracket. The connecting tube is pivotally connected to the mounting bracket. The extending tube is connected to the connecting tube. The rotating jacket is rotatably mounted around the extending tube. The locking device is connected to the rotating jacket and the seat tube of the rear frame. The front frame is connected to the folding assembly and has a top tube, a head tube, a front fork and a front wheel.

Abstract: A bicycle frame includes a front section and a rear section. The front section includes a front frame portion having a front coupling configured to receive a front wheel support member and to allow rotation between the front coupling and the front wheel support member, the front frame portion defining a central vertical plane of the frame. The rear section includes a drive link case having an upper tube, a lower tube, a rear hub housing, and a front sprocket housing all integrally arranged with each other to form a rigid drive link case having an opening disposed between the upper and lower tubes, the drive link case being connected to the front frame portion via the front sprocket housing. The drive link case is disposed eccentric to the central vertical plane and is cantilevered rearward from the front sprocket housing. The front frame portion extends forward from the front sprocket housing.

Abstract: Cycling apparatus including at least one front wheel and at least one rear wheel rotatably mounted on axles on a frame, a riding seat attached to the frame, a drive mechanism coupled to at least one of the wheels for driving the cycling apparatus, at least one handlebar post attached to a portion of the frame, and a carrier member attachable to the frame for carrying at least one of a child and an object therein and movable between first and second attachment orientations, wherein in the first attachment orientation the cycling apparatus is in a rider-powered orientation drivable by a rider sitting on the seat and powering the drive mechanism, and wherein in the second attachment orientation the cycling apparatus is in a stroller orientation wherein the at least one handlebar post is arranged with respect to the carrier member to form a pushable stroller, wherein a center of gravity of the carrier member with respect to the axle of the at least one front wheel at the first attachment orientation is different

Abstract: This invention relates to personal transportation devices and more specifically to folding bicycles. The invention consists of a folding frame comprised of a main tube with tuned cross section, a folding pivot axis perpendicular to the vehicle axis, and a locking mechanism further comprising a seat post rigidly retained by two clamping sections of a seat tube. The invention also consists of a rear wheel retention element—a “dropout”—with horizontal axle slots and a replaceable derailleur hanger.

Abstract: A foldable personal mobility vehicle is disclosed comprising first and second units having first and second wheels being rotatable about first and second axles. A drive unit rotates the second wheel for moving the foldable personal mobility vehicle. A pivot disposed substantially parallel to the first and second axles pivotably connects the first unit to the second unit for folding the personal mobility vehicle. The foldable personal mobility vehicle may include a folding unit for automatically folding the foldable personal mobility vehicle.

Abstract: A folding bicycle includes a frame (10) with a main member (11) extending in the fore and aft direction of the bicycle and a rear wheel assembly (19) in the region of a rearward end of the member (11). The assembly (19) is pivotably connected with the frame to be movable between a use position in which a rear wheel (20) of the assembly in side elevation of the bicycle is disposed rearwardly of the frame and a folded position in which the wheel in the side elevation is disposed partly alongside the main member (10). A pivot connection allowing lateral redisposition of the wheel in this manner can have the form of a hinge (31) with a horizontal axis inclined relative to the vertical longitudinal plane of the bicycle.

Abstract: A motorcycle fork rake extension kit provides an increased fork rake without welding and maintains a favorable trail. The extension kit includes an upper adapter block fixedly attached to an upper end of a steering head of a motorcycle frame and a lower adapter block fixedly attached to a lower end of the steering head of the motorcycle frame. Triple trees are rotatably attached to triple tree ends of the adapter blocks through steering head bearings. The triple tree ends of the adapter blocks are spaced away from the frame, the lower adapter block having a greater spacing to increase fork rake. The lower triple tree may further space the fork tubes forward to further increase fork rake. In a preferred embodiment, approximately 45 degrees of rake is provided with favorable trail.

Abstract: A foldable bicycle that comprises a folding segment provided on the frame thereof, whereupon the bicycle can be folded in the manner that a front wheel is settled at the side of a back wheel of the bicycle. The bicycle further comprise an auxiliary wheel deposited on the frame in front of the folding segment so that when the bicycle is folded, the auxiliary wheel, the front wheel and back wheel of the bicycle can function as three supporting points that are arranged in a triangular form on a plane.

Abstract: A collapsible bicycle includes a handlebar, a tubular portion, a front wheel portion, a saddle portion, a first frame, a second frame, a rear wheel portion, and supporting coasters. The saddle portion has a rod body. The rod body is fixed obliquely on one end of the second frame, and the other end of the second frame is rotatably pivoted on the tubular portion. One end of the first frame is rotatably pivoted with a clamping element on the tubular portion, and a middle portion of the second frame is rotatably pivoted on a middle portion of the first frame. A supporting element extends from the end of the first frame near the rear wheel portion allowing supporting the collapsible bicycle.

Abstract: The present invention discloses a folding bicycle comprising a head and a frame, wherein the head includes a handlebar, a handlebar stem, a folding joint, and a front fork, and the front fork has two fork blades each of which is inwardly recessed. When the handlebar is folded downwards with the handlebar stem, the handlebar can be further folded and placed in the recess of the fork blade without interfering with the fork blade. Thus, the folding bicycle can be further folded with a less folded volume.

Abstract: A foldable bicycle has an X-shaped frame including a folding device having two hinged portions to which two connection bars and a seat bar and a rear fork are fixed respectively to form an X-shape in an expanded condition. The two portions can be opened to fold the X-shaped frame. A handlebar and a front fork are respectively coupled to the connection bars. A shock absorbing device includes upper and lower tubes connected to the handlebar and the front fork respectively with a spring arranged therebetween. An adjusting device is arranged adjacent to a rear wheel to carry an auxiliary wheel through a bracket. The adjusting device allows the bracket to be positioned at an operation condition, a backward-bent standby condition, and a forward-bent stowed condition.

Abstract: A folding bicycle has a frame with a front steering tube, main tube, and center seat tube defining a hollow space into which the rear wheel strut with rear wheel are pivoted for storage. The rear wheel strut is mounted to a bottom bracket at the lower end of the center seat tube. A main gear for the bicycle is mounted concentrically with the rear wheel strut such that the distance relationship between the main gear and rear wheel is maintained during folding. A releasable member locks the rear wheel strut in position for riding and unlocks it for folding. Other quick-release members allow the front fork with front wheel, handlebars, and seat to be removed and folded flat with the frame and rear wheel. Using this folding method, a bicycle having 16-inch diameter wheels can be folded into a suitcase-sized space of about 21?×27?×9?.

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: The present invention includes a front fork assembly for a cycle. The assembly includes a steering tube, front furcations fixed to the steering tube, and a drop-out bracket device fixed to a distal end of each front furcation. The drop-out bracket device has a tubular member having multiple drop-out brackets directed towards a front side of the cycle, a back side of the cycle, or both. Each drop-out bracket has a substantially planar fastening member and an opening.

Abstract: A foldable bicycle includes a front frame, a rear frame, two seat plates, a middle frame, a seat post, and a handlebar unit. Thus, when the bicycle is folded, the front frame, the middle frame and the rear frame are parallel with other, and the handlebar unit is folded, so that the parts of the bicycle are fully folded to reduce the volume largely, thereby greatly saving the space of storage and transportation, and thereby facilitating a user carrying the bicycle.

Abstract: A suspension system for the front wheel of single wheeled vehicles having a single front wheel, such as bicycles, tricycles and motorcycles. The suspension system consists of a frame with a variable arrangement of the steering points using at least one swingable arm, multiple fork joints at least one of which is designed as a two-part fork joint that provides for variable distances between the steering axis, and a telescopic fork connected to the front wheel and which has at least three parts so that the front wheel is guided through the entire system whether partly or fully sprung.

Abstract: The present invention is directed to a wheeled luggage item with an ergonomic telescopic handle assembly. The ergonomic telescoping handle assembly of the present invention allows a user to use the luggage using just one hand. Furthermore, the ergonomic telescoping handle assembly shifts the weight of the bag onto the bag, rather than the user's arm, reducing strain on the user's arm, and it provides for a greater space between the user's heel and the bag, reducing the chance that the user will kick the bag while walking. Finally, the ergonomic telescoping handle assembly of the present invention is stored compactly within the luggage, maximizing the volume available within the luggage for storage of personal items.

Abstract: Provided is a folding bicycle comprising two auxiliary rear wheels at both sides of a rear wheel; a seat including a seat tube extended downward; a first crossbar having a front end pivotably connected to a lower portion of a handle above a front wheel, and a rear end fixedly connected to an intermediate portion of the seat tube; a pair of second crossbars having two front ends pivotably connected to an intermediate portion of the handle, and two rear ends fixedly connected to both ends of an hub of the rear wheel. The first crossbar passes an intermediate portion of the second crossbar and is pivotably connected thereto. A flexible shock absorbing means is provided at a joining portion of the seat tube and the second crossbars. The shock absorbing means is adapted to elastically deform when a downward force is exerted on the seat.

Abstract: There is provided a foldable land vehicle comprising an elongate main frame generally defining a longitudinal axis running from a front end of the vehicle to a rear end of the vehicle, a front part including a front wheel, a rear part including a rear wheel, a first joint means for connecting the front part to the main frame and for folding the front part to a lateral side of the main frame, and a second joint means for connecting the rear part to said main frame and for folding the rear part to below the main frame.

Abstract: A folding collapsible bicycle, which includes a front connecting bar pivoted to the bicycle frame and locked by a lock to hold a front fork, a retractable fork tube hinged to the front fork and locked thereto with a lock screw to hold two collapsible handlebars, and a seat pillar holder pivoted to the bicycle frame at the top and locked thereto with a lock to support a seat pillar and a saddle on the seat pillar.

Abstract: A modular bicycle comprising a first section having a front frame section and a first tire, a second section being couplable to the first section and comprising a central frame, and a third section being couplable to the second section and the first section, with the third section comprising a rear frame section, a second tire, and a handle bar. The bicycle also comprises pedals that are removably securable to the crank arms of the bicycle. The pedals comprise a foot rest, a base section secured to the foot rest, and a locking member pivotally connected to the base section. The locking member is insertable into a through bore located on the crank arm and is pivotally rotatable towards the crank arm, thereby securing the pedal to the crank arm.

Abstract: A folding bicycle comprises a support assembly pivotably connected to a portion of a head tube below a lower enlargement above a front wheel; and a rear wheel assembly comprising a front end pivotably connected to a quick release slidable along the head tube, an intermediate enhancement including a padded cross bar interconnected its right and left portions, an intermediate point pivotably connected to an intermediate point of the support assembly, and two auxiliary wheels fixedly connected to both ends of a hub of a rear wheel as kickstand. Unfastening and sliding the quick release the quick release upward until being stopped by a stop fixedly connected to handlebars, and fastening the quick release will fold the bicycle. Alternatively, unfastening and sliding the quick release downward until being stopped by the enlargement, and fastening the quick release will unfold the bicycle.

Abstract: A collapsible personal transportation vehicle may be compacted and stowed in a mobile home, recreational vehicle, or the like, during periods of non-use and transport. Although the vehicle may be powered with a gasoline or electric power plant, a propane fueled engine is used due to its lighter weight and lack of fumes or leakage problems during transport. The vehicle may accommodate two riders, and achieve speeds of up to 30 miles per hour, or greater. To achieve sufficient collapsibility, the vehicle includes a seat assembly constructed from various pivoting members, whereby, during use, riders are seated above the motor, but during periods of non-use, the seat assembly folds down to fit into a space in front of the engine, with a height no greater than the engine and fuel tank(s). The preferred embodiment accommodates a roof structure as part of the collapsible seat assembly, which may be provided with a canopy and/or rear-view mirror, if so desired.

Abstract: A human powered ground vehicle is provided and comprises a vehicle frame comprising a rear frame section and a mid-section, the mid-section comprising a forward end and a rearward end, wherein the rear frame section is pivotally connected at a sprocket assembly to the rearward end. Methods of folding and unfolding a foldable vehicle are also provided.

Abstract: There is provided a frame assembly for a foldable cycle. The assembly has a rear frame portion including a mounting for a rear wheel; a forward frame portion, hingedly connecting to the rear frame portion such that the two are foldable towards each other; and hingedly connecting to the forward frame portion, a pivot assembly for a mounting arm including a mounting for a forward wheel. On folding of the cycle, hinged movement of the pivot assembly relative to the forward frame portion moves the mounting arm to move the forward wheel mounting relative to the forward frame portion. The rear frame portion and pivot assembly are coupled such that folding of the frame portions towards each other results in the distance between the forward frame portion and forward wheel mounting extending relative to each other.

Abstract: The invention is a bicycle having adjustable orientation of the seat (6) and the pedals (4) with respect to the handle-bars (5). The bicycle comprising an x shaped frame comprised of a profile (31) and a rigid support member (32) that are rotatably connected to each other by a hollow pin (42). The rider of the bicycle can change the angle between the profile (31) and the rigid support member (32) to rotate about the hollow pin (42). The bicycle further comprises a seat (6), attached to the upper part of the rigid support member (32), a first toothed-wheel (33) attached to the frame (32) by means of a pin passing through the toothed-wheel (33) and the lower part of the rigid support member (32). The pin has a crank and pedal (4) attached to each of its ends. The bicycle also comprises a front gear and second toothed-wheel (7) attached to a pin that passes through the hollow pin (42) located between the seat (6) and the first toothed-wheel (33).

Abstract: A vehicle for carrying a child that is pushed along by one walking, jogging, or running, steerable with handlebars, and convertible from a push stroller to a rideable, operator-powered tricycle. The stroller converts from a stroller pushable from a back end to a tricycle by extending telescoping frame members and attaching a seat frame assembly comprising pedals, a crank, a continuous drive element, front and rear drive elements, and a first gear for driving a pair of rear wheels. Further, a child-carrying feature attaches at a front end to a frame support member and at a back end to a rotatable handlebar assembly. The stroller of the present invention also converts into a compact configuration for convenient transportation or storage by removing the seat frame assembly, retracting the telescoping frame members, and folding the handlebar assembly forward.

Abstract: A foldable bicycle frame includes top and bottom connecting bars respectively pivotally connected between front and rear top tubes of the bicycle, a plurality of springs supported between the top and bottom connecting bars for pushing the top and bottom connecting bars vertically away from each other for allowing the front top tube and the rear top tube to be turned relative to each other between an operative position and a non-operative position, and a locking mechanism controlled by a locking lever to lock the top connecting bar and the bottom connecting bar in a position where the front top tube and the rear top tube aren't movable relative to each other.

Abstract: A trailer apparatus is for use with a portable bleacher of the type having a lower framework supporting and interconnecting a plurality of generally parallel longitudinally extending bleacher seat assemblies. The framework includes longitudinally spaced laterally extending base members. The trailer apparatus includes a torque tube rotatably attached to a lower part of the bleacher framework and above the base members to extend beneath and generally perpendicular to the seat assemblies. A torque arm is rigidly attached to one end of the torque tube. A first wheel assembly is rotatably coupled to the torque arm on an axis of rotation parallel to the torque tube axis. A generally vertically or horizontally extendable lift jack is coupled at a lower end to the torque arm and operatively coupled at its upper end to the framework.

Abstract: A folding or collapsible bicycle includes a bifurcated solid frame defining a first storage space and a second storage space. The front and rear wheels are held by pivoting forks that can be selectively moved from an operational position to a closed position in the closed position, the front wheel is disposed in the first storage space and the rear wheel is disposed in the second storage space.

Abstract: A toolless folding bicycle for facilitating storing and transporting a bicycle when not in use is provided. The toolless folding bicycle includes a bicycle assembly being designed for being ridden by a user across a support surface. The bicycle assembly comprises a frame member, a drive assembly and a steering assembly. The drive assembly is operationally coupled to the frame member whereby the drive assembly engages the support surface. The drive assembly is designed for being actuated by the user whereby the drive assembly propels the frame member across the support surface when the drive assembly is actuated by the user. The frame member is designed for supporting the user when the user is seated on the frame member. The drive assembly is operationally coupled to the frame member for steering the frame member across the support surface when the drive assembly propels the frame member.

Abstract: A foldable bicycle is provided. One feature of the foldable bicycle is that the central portion of the frame that defines the bicycle's geometry is substantially rigid. That is, the down tube, seat tube, top tube and bearing tube are substantially fixed relative to each other. Another feature of the foldable bicycle is that the front wheel can be folded into a position between the down tube, which is comprised of two tubes. Yet another feature is a tandem bicycle configuration that does not extend the length of the frame or the wheelbase. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the subject matter of the disclosure contained herein. This Abstract is submitted with the explicit understanding that it will not be used to interpret or to limit the scope or the meaning of the claims.

Abstract: A foldable bicycle includes a bicycle frame, two driving wheels and a folding arrangement. The bicycle frame has a front portion, a rear portion, and a body frame including three supporting members to define a triangular structure. The folding arrangement includes a folding joint and a detachable connecting joint. The folding joint is provided at one of the supporting members to pivotally connect the front portion of the bicycle frame with the rear portion thereof. The detachable connecting joint is provided at another of the supporting member to disengage the triangular structure of the body frame, such that the front portion of the bicycle frame is adapted to pivotally fold towards the rear portion thereof via the folding joint to overlap the two driving wheels so as to fold up the foldable bicycle to a compact structure.

Abstract: A foldable bicycle includes a frame. A first foldable device is connected to a top tube of the frame so as to fold a front wheel together with a head tube and a handlebar backward at the first foldable device such that the front and rear wheels are located parallel with each other. At least one assistant wheel is connected to a lower end of a down tube so that the at least one assistant wheel cooperates with the front and rear wheels to form a stable triangle support arrangement and the foldable bicycle can be easily moved by the at least one assistant wheel cooperating with the front and rear wheels. A carry rack is located above the rear wheel, which can be positioned by engaging pivot rods of the carry rack with engaging members on two support rods connected to a hub of the front wheel.

Abstract: A foldable bicycle includes a foldable bicycle frame which comprises a main frame and an enclosing frame foldably to define a receiving cavity; a front and a rear wheel assembly rotatably supported by the bicycle frame; a bicycle driving unit operatively mounted on the bicycle frame and connected to the two wheel assemblies for driving at least one of the wheel assemblies rotating; a steering unit longitudinally extended from the front wheel assembly for steering a moving direction of the front wheel assembly; and a folding arrangement. The folding arrangement includes a folding link connecting the front and the rear wheel assembly, the bicycle driving unit, the steering unit, the enclosing frame, and the main frame in a foldable manner; and a folding actuator operatively connected with the folding link in such a manner that the foldable bicycle is adapted to move between a folded position and an unfolded position.

Abstract: A collapsible bicycle includes a collapsible frame and a retaining device. The collapsible frame can be switched between an extended position and a collapsed position in a longitudinal direction. The wheels of the collapsible bicycle can still roll on the ground when the collapsible frame is in the collapsed position. The retaining device includes a trigger. The trigger can be operated in order to switch the retaining device between a retaining position and a releasing position. In the locking position, the retaining device retains the collapsible frame in the extended position. In the releasing position, the retaining device allows the collapsible frame to be switched to the collapsed position.

Abstract: A foldable two wheeled scooter includes a steering post with a front wheel at a lower end and handlebars at an upper end. A support tube connects with a folding mechanism enclosed in a protective housing and supportively connects with a running board having a rear wheel. The protective housing prevents a user from being harmed when moving the scooter from an upright position to a folded down position.

Abstract: Wheeled personal mobility vehicles with extremely thin stowed profiles are provided, which in one embodiment, include a plurality of movable, collapsible wheel axle assemblies which are supported on a support frame and movable between an operative state where the wheels provide rolling support, and a collapsed state where the wheels are moved into the side elevational profile of the device. The embodiment provides for both integrated propulsion and steering linkage to the wheels when they are manually moved into their operative position, along with a collapsible steering mechanism, a support base and at least one collapsible seat. This embodiment may also provide for pedal power, battery, fuel cell or motive power as well as remote control operation.

Abstract: A portable bicycle comprises a front bar having a front end coupled to a head tube, a rear frame section including a lower seat tube extended upwardly from a bottom bracket, a upper seat tube spaced and aligned with the lower seat tube, and a hollow rear bar for slidably receiving the front bar, the rear bar being intersected the upper and lower seat tubes, and a fastening mechanism for securing the front bar to the rear bar. Detaching a seat post and a saddle, unfastening the fastening mechanism, fully projecting the front bar from a rear opening of the rear bar, and fastening the fastening mechanism will shorten the distance between front and rear wheels to a minimum and facilitate the bicycle to store or carry in a much reduced size.

Abstract: A collapsible skateboard includes an upright handle having lower portion on which is fixedly mounted a bracket, a connector having a curved slot having a lower end formed with a horizontal recess, an upper end formed with a vertical recess, and a circular hole under the vertical recess, an adjust pin inserted into the vertical recess of the connector and the elongated hole of the bracket, a pivot pin fitted through the circular hole of the connector and the circular hole of the bracket, a spring having an upper end connected to the adjust pin and a lower end to the pivot pin, and a platform on which is fixedly mounted the connector, whereby the skateboard can be easily folded up as desired.

Abstract: Provided is a folding electric bicycle comprising a front frame section; a rear frame section comprising two bent arms individually having one end pivotably coupled to an axle passed rear wheel, and two auxiliary wheels rotatably mounted in open ends of the bent arms; a crossbar comprising a front end and a rear end pivotably coupled to the front and rear frame sections respectively; a latch detachably interconnected the crossbar and the rear frame section; and a down tube interconnected the front and rear frame sections. The rear frame section can either retract toward the front frame section about the unfastened latch for folding or extend from the front frame section about the unfastened latch for extending. The auxiliary wheels are either disposed above the ground when the bicycle is ready or rotatable and contact with the ground when the bicycle is folded for facilitating moving.

Abstract: Front and rear parts of a frame of a three-wheeled cart can be joined together with a rearmost transverse rod of the front part being fitted in front trench-formed fitting portions of the rear part, a rear upright rod of the front part being fitted in a fitting portion of the rear part plus with a locking unit on rear part being engaged with an engaging hole of the front part to secure the front part to the rear part; a support rod is pivoted to the rear part; in assembling the frame, the support rod is positioned upright for holding the rear part steady together with two rear wheels such that one can use two hands instead of only one to effectively prevent the front part, only supported with a wheel, from tilting to one lateral side while moving the same to connect the same to the rear part.

Abstract: A personal transportation apparatus for a user, including a frame; front and rear wheels connected to the frame and being rotatable about respective front and rear axes, driving mechanism for driving at least one wheel of the apparatus, the driving mechanism being powered by the user, and a receiving structure within which the user fits to operate the apparatus. The receiving structure includes a seat and a frontal support for supporting a frontal torso region of the user, whereby the receiving area is connected to the frame and is positioned such that the user is in a generally upright position when wearing the apparatus.

Abstract: A folding bicycle presents a number of advantages over both conventional and other foldable bicycles. The folded size of 12 ×25×6 inches (305×635×153 millimeters) compares favorably to other folding bicycles, and its 11 lb. (eleven pound, or 5 kilogram mass) weight is significantly superior to even the closest lightweight model at eighteen pounds, and about half of the average portable bike weight of twenty-two pounds. The folded volume of the bike at 1800 square inches is slightly over one cubic foot. The portable bicycle has a folding stowage time of about 10 seconds, and a deployment time of about 6 seconds. A folding pedal and handle bar design contributes significantly to a folded lateral profile.

Abstract: An improved structure of a foldable bike includes a turntable containing an upper bearing and a lower bearing provided between a crossbar and a head tube; a pair of recesses being provided in symmetry in the turntable to be fixed by a locking mechanism provided below the crossbar; a folding structure and an absorber being provided to a seat pole of the bike with the absorber being locked to a chain stay; the bike being ready for riding when the locking mechanism and the absorber being fixed in position; and when the locking mechanism and absorber being released, the bike being folded up with the seat pole as a support to facilitate handling or storage.