The present invention relates to a foldable tricycle, operable between a first mode of operation steerable by a tricycle rider, and a second mode of operation steerable by an attendant pushing the tricycle. The tricycle comprising: a pair of rear wheels; a foldable seat comprising a chair and a back support, for accommodating said tricycle rider; a foldable arm rest, connected to said foldable seat; a parental handle, for steering said tricycle by said attendant pushing the tricycle; a main frame, configured to rotatably hold said rear support, to support said foldable seat, to rotatably support said rider handle, to rotatably support said fork; and a latching mechanism, capable of locking and unlocking the rotatable movement, of the rear support, in relations to the main frame.

In an aspect, a vehicle is provided that includes a frame, a wheel, first and second footrests, a motor and a control system. The wheel further has a longitudinal radius and a lateral radius that is within 10% of the longitudinal radius. Each footrest has a foot support surface and is movable between a folded position, and a deployed position for supporting a foot of a user. The vehicle possesses a generally spherical outer shape. The center of mass is less than a quarter of the longitudinal radius of curvature away from the geometric center of the wheel. The motor drives rotation of the wheel relative to the frame. The control system controls operation of the motor based at least in part on an orientation of the self-balancing vehicle.

An elliptical bicycle comprises a structural frame including two stringers in opposing arcs, one upper and the other lower, a front wheel and a rear wheel driven by a crankset from its support platforms, as well as a steering box formed by fork, steering tube and handlebar. The elliptical bicycle has multiple hinges. The structural frame is provided with a set of main hinges, each applied to a bipartite stringer having an articulation at an approximate angle of up to 170. A secondary hinge is applied in a bipartite steering tube of the handlebar having an articulation at an approximate angle of up to 180. A set of tertiary hinges is applied between a crankset and support platforms of the user's feet, each of them having an articulation at an approximate angle of up to 90 upwards.

The present invention relates to a coupling-assist device for a bicycle crank arm, comprising: a main body open through upper and lower portions, the main body having a space formed to receive a crank arm to be inserted; a handle member extending from a lower portion of the main body; a support frame including a fixing part formed on a lower portion thereof and coupled with the upper portion of the main body, and a position adjusting hole that is open through to allow a tool to be passed therethrough and connected to the crank arm, wherein the position adjusting hole enables adjustment of position of the tool in up and down directions; and a support means.

The invention discloses a novel rapidly foldable electric vehicle comprising a main beam, a rear wheel, a cross beam, a bracket and a forward/backward movable saddle, wherein a pin is arranged at a junction between a lower end of the bracket and the main beam, a supporting post is arranged at the lower end of the bracket, the bracket and the supporting post are rotatably arranged about the pin, an included angle of less than 180 is formed between the supporting post and the bracket, and a towing wheel is arranged at a lower end of the supporting post. When the vehicle is folded, the saddle slides forward from a rear part of the cross beam and drives the bracket and the supporting post to rotate counterclockwise about the pin, the towing wheel moves downward and backward and gradually touches the ground, and after the towing wheel touches the ground, the rear wheel leaves the ground and the saddle moves to a front part of the cross beam to complete the folding action, thus the vehicle is in a towed or flat state. When the vehicle is towed, the towing wheel is positioned at a middle-rear part of a vehicle body, and when a human body stands upright, the vehicle body tilts, its center of gravity naturally shifts backward, the vehicle body has less pressure on the human body and towing is performed with less effort. When the vehicle is folded, the saddle moves forward without moving backward and the rear space of the vehicle body can be saved. When the vehicle is folded and laid flat, the towing wheel touches the ground and the vehicle body does not tip over easily.

A folding bicycle includes a first frame section; a second frame section movably mounted to the first frame section so that the first and second frame sections may be moved relative to each other from an unfolded position to a folded position; a front wheel mounted to the first frame section; a rear wheel mounted to the second frame section; a chainset mounted to the first frame section and including one or more chain rings; a rear hub mounted to the second frame section; a chain extending around and between the one or more chain rings and the rear hub; and a chain retainer fixedly mounted to the first frame section and defining a gap between the chainset and the chain retainer to maintain engagement between the chain and the chainset when the folding bicycle is in the folded position.

An ergonomic and rider-friendly auto-balancing personal transportation device. The device may have a central wheel structure with one or more tires and deployable foot platforms located on both sides of the central wheel structure. The platforms may be linked to a handle, such that lifting the handle retracts the foot platforms and releasing the handle may deploy them. The tire size and platform size may be set so that the device is easy to step on to, and the distance to ground when dismounting is reduced. Dual tire and single wider tire embodiments are disclosed as are other features and embodiments.

The teachings provided herein are generally directed to compact vehicle drive mechanisms that can be used in the design of a foldable, carry-on vehicle. The compact drive mechanisms presented herein, for example, have contributed to the advent of the compact, carry-on bicycles set-forth in the teachings which include drive-and-steering units and drive-and-chassis units.

A motorized scooter is provided for use as an assistive mobility aid. The motorized scooter is easily folded for storage or transport. It comprises a front wheel in rotatably engagement with a steering tube, the front wheel including a hub and spokes extending therefrom, an electric motor housed in the hub and in mechanical communication with a cog, the cog engaging the spokes; a handle bar distally attached to the steering tube; a framework, the framework including a plurality of tubes that are in one or more of pivotal or slidable relation; a seat post slidably mounted on the framework; a seat attached to the seat post; and a pair of rear wheels in rotatable engagement with the framework.

This disclosure discloses a balance vehicle, comprising: a wheel, a support frame, a frame, a shock suspension component, foot pegs, a control rod and a handle grip; the support frame is fixed to an axle of the wheel; the frame is connected with the support frame in a slide way through a sliding block fixed to the support frame; the shock suspension component is disposed between the frame and the support frame, and configured to buffer the relative movement between the frame and the support frame; the foot pegs are fixed on the frame; the control rod can move forward and backward in the driving direction, and is configured that: when a driver pushes the control rod forward in the driving direction, the balance vehicle is accelerated; when the drive pulls the control rod backward in the driving direction, the balance vehicle is decelerated or draws back.