A tricycle may be operable between a first mode of operation steerable by a tricycle rider, and a second mode of operation steerable by an individual pushing the tricycle. In both such first and second modes, the frame of the tricycle is configured to rotatably support the rear wheels and configured to support the head tube at a distance from the rear wheels such that a distance between the head tube and rear wheels need not necessarily be changed even when the front wheel axis location is changed from one mode to another.

A tricycle may be operable between a first mode of operation steerable by a tricycle rider, and a second mode of operation steerable by an individual pushing the tricycle. In both such first and second modes, the frame of the tricycle is configured to rotatably support the rear wheels and configured to support the head tube at a distance from the rear wheels such that a distance between the head tube and rear wheels need not necessarily be changed even when the front wheel axis location is changed from one mode to another.

A self-balancing vehicle includes two vehicle bodies, respectively including a carrier assembly, a moving mechanism, a control assembly, and a power supply device coupled to the control assembly. The carrier assembly includes a frame and a foot platform coupled to the frame to form a cavity. The frame recess towards the foot platform defining a groove. The moving mechanism includes a wheel disposed on the groove side of the frame and a driving member. Part of the wheel is accommodated in the groove. The driving member drive the wheel to rotate relative to the frame. The control assembly includes a posture sensor detecting a tilt angle of the frame with respect to the vertical direction and a controller controlling a rotation speed of the driving member. At least one of the power supply device and the controller is accommodated in the cavity.

A scooter has a load-carrying deck, a steering rod for steering a front wheel, two outriggers arranged on opposite sides to be pivotable between retracted stowed positions and extended support positions. Each outrigger has a wheel mounted movably on the outrigger to move between a stowed position and a ground-contacting support position. The outriggers when in their support position form a wider loading surface than the deck alone. A control arm is attached to the steering rod for movement between a folded/stowed position lying adjacent to the rod and an operating position extending forward from the steering rod. A sensor detects movement of at least a section of the control arm and, in response thereto, provides control inputs to an electric motor driving a rear wheel.

A scooter has a load-carrying deck, a steering rod for steering a front wheel, two outriggers arranged on opposite sides to be pivotable between retracted stowed positions and extended support positions. Each outrigger has a wheel mounted movably on the outrigger to move between a stowed position and a ground-contacting support position. The outriggers when in their support position form a wider loading surface than the deck alone. A control arm is attached to the steering rod for movement between a folded/stowed position lying adjacent to the rod and an operating position extending forward from the steering rod. A sensor detects movement of at least a section of the control arm and, in response thereto, provides control inputs to an electric motor driving a rear wheel.

An outrigger sail vehicle system includes: a vehicle, such as a bicycle; and an outrigger sail device, including a mounting base connected to the vehicle, an outrigger arm rotatably connected to the mounting base, a boom handle rotatably connected to the outrigger arm; a sail assembly, including a sail frame with first and second frame members, and a sail member that is spanned out by the sail frame; whereby, the sail assembly is rotatable from a right to a left side of the vehicle.

A footrest is provided for a child riding on a tricycle. The footrest has a housing having a foot platform and a retaining assembly. The foot platform has a top surface and a bottom surface, wherein the top surface is adapted to receive a foot of the user. The retaining assembly is adapted to separately engage one of a fork of the tricycle, a fender for the front wheel of the tricycle, and a crank of the tricycle. Additionally, the footrest does not engage the tricycle body extending between the front fork and the rear wheels of the tricycle.

The present invention provides a transformable bicycle. The transformable bicycle including: a pair of front fork members which are connected to a front wheel, and which are arranged with the front wheel interposed therebetween; a head tube which is connected a fork support bar; a frame which is coupled to the head tube, and which is connected such that the head tube is rotatable around a bolt pin; a fastening device which is connected to the head tube; another fastening device which is installed with the fastening device and a spring interposed therebetween; a fastening device handle which allows the front fork members to be folded toward the frame in such a manner that the fastening device handle rotates the head tube connected to the fastening devices around the bolt pin by pulling the fastening devices during rotation around pins; a seat; and a rear wheel.

The present invention provides a transformable bicycle. The transformable bicycle including: a pair of front fork members which are connected to a front wheel, and which are arranged with the front wheel interposed therebetween; a head tube which is connected a fork support bar; a frame which is coupled to the head tube, and which is connected such that the head tube is rotatable around a bolt pin; a fastening device which is connected to the head tube; another fastening device which is installed with the fastening device and a spring interposed therebetween; a fastening device handle which allows the front fork members to be folded toward the frame in such a manner that the fastening device handle rotates the head tube connected to the fastening devices around the bolt pin by pulling the fastening devices during rotation around pins; a seat; and a rear wheel.

Embodiments include strollers having removable seats. An example stroller may include rear wheels, front wheels, and a frame including a handle portion, a rear wheel support portion, a front wheel support portion and a folding mechanism connecting the front wheel support portion and the handle portion in both an unfolded configuration and in a folded configuration. The frame may include a stroller seat support portion positioned at a first vertical position adjacent the handle portion, and a front seat attachment configured for attachment to the front wheel support portion at a second vertical position substantially lower than the first vertical position. The front seat attachment may be configured to support the front stroller seat substantially over the front wheels so that a center of gravity of the stroller system is between the front wheels and the rear wheels.