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.

In an aspect a vehicle is provided, and includes a frame a front wheel and a rear assembly. The front wheel is rotatably mounted to the frame. The rear assembly includes a first rear wheel support and a second rear wheel support. Each of the wheel supports is movably mounted to the frame. The rear assembly further includes a first rear wheel and a second rear wheel. The first and second rear wheels are rotatably mounted to the first rear wheel supports respectively. The rear assembly is positionable in a first position in which the first and second rear wheels are substantially immediately adjacent one another to operate as a single rear wheel, and a second position in which the first and second rear wheels are spaced apart from one another.

In an aspect a vehicle is provided, and includes a frame a front wheel and a rear assembly. The front wheel is rotatably mounted to the frame. The rear assembly includes a first rear wheel support and a second rear wheel support. Each of the wheel supports is movably mounted to the frame. The rear assembly further includes a first rear wheel and a second rear wheel. The first and second rear wheels are rotatably mounted to the first rear wheel supports respectively. The rear assembly is positionable in a first position in which the first and second rear wheels are substantially immediately adjacent one another to operate as a single rear wheel, and a second position in which the first and second rear wheels are spaced apart from one another.

A transportation robot may comprise a base attached to a carriage. The base comprises a motor-assisted vehicle for transporting a first payload. The base automatically performs self-balancing functions during operation and rotates around a base axis of rotation. The carriage unit comprises a mechanical extension that is attached to the base for transporting a second payload that is different than the first payload. The carriage rotates around a carriage axis of rotation. The carriage includes a set of carriage connections configured to attach the carriage to the base so that the carriage axis of rotation is substantially collinear with the base axis of rotation. A carriage connection may include supplementary elements that enable the robot to operate properly in both first and second states (user is on or off the base) without requiring re-configuration of the carriage connection. The supplementary elements may include a resistance element and/or a damping element.

What is provided is a cargo bicycle apparatus and a kit for converting an existing bicycle into a cargo bicycle. The cargo bicycle apparatus comprises a cargo attachment that easily attaches and detaches from an existing bicycle to make the existing bicycle more utilitarian and functional. The cargo attachment connects with the existing bicycle in a way that prevents damage or permanent modification to the existing bicycle. Since no specialized tools or mechanical skills are required in the assembly of the cargo bicycle apparatus, the cargo attachment provides the operator with greater convenience and flexibility for converting an existing bicycle into a cargo bicycle apparatus. In addition, the cargo attachment is configured to automatically adjust to the geometry of nearly all existing bicycles without having to modify the geometry of the cargo attachment to match the geometry of a particular bicycle.

What is provided is a cargo bicycle apparatus and a kit for converting an existing bicycle into a cargo bicycle. The cargo bicycle apparatus comprises a cargo attachment that easily attaches and detaches from an existing bicycle to make the existing bicycle more utilitarian and functional. The cargo attachment connects with the existing bicycle in a way that prevents damage or permanent modification to the existing bicycle. Since no specialized tools or mechanical skills are required in the assembly of the cargo bicycle apparatus, the cargo attachment provides the operator with greater convenience and flexibility for converting an existing bicycle into a cargo bicycle apparatus. In addition, the cargo attachment is configured to automatically adjust to the geometry of nearly all existing bicycles without having to modify the geometry of the cargo attachment to match the geometry of a particular bicycle.

A bicycle apparatus with interchangeable front fork is disclosed. The bicycle comprises a frame and a quick release assembly for securing the removable front fork attachment assembly to the bicycle frame's head tube. The interchangeable front fork attachment assembly and quick release assembly allows for the quick interchanging of front fork with varying attachments which utilize different methods to achieve motion.

A bicycle apparatus with interchangeable front fork is disclosed. The bicycle comprises a frame and a quick release assembly for securing the removable front fork attachment assembly to the bicycle frame's head tube. The interchangeable front fork attachment assembly and quick release assembly allows for the quick interchanging of front fork with varying attachments which utilize different methods to achieve motion.

A compact mobility device has an adjustable drive mode. The device includes a base panel and a number of drive wheels rotatably provided at opposite ends of the base panel. The drive wheels are configured to rotate by receiving torque from a driving unit. A column is constituted by a plurality of links connected in series to be foldable and is configured such that a lower end of a lower link is rotatably coupled to the base panel with an upper end of an upper link being provided with a steering handle. An auxiliary wheel is provided between the links constituting the column and is configured to roll along with the drive wheels by coming into contact with a ground when the links are folded.