A modular bicycle and board apparatus having a buoyant board, a front wheel, a rear wheel and handlebars mountable and usable in a first configuration as a bicycle in which the buoyant board is the bicycle's frame and in a second configuration as a surfboard by changing the orientation of the front wheel and handlebars with 90 degrees with respect to the buoyant board, the surfboard being steerable from the handlebars.

A deformable wheel includes: a plurality of lobes; wheel spokes connected to the plurality of lobes, respectively; and hinges pivotably connecting the wheel spokes to the lobes, wherein the wheel spokes are capable of two degree-of-freedom motion, and the plurality of lobes either form a circular shape due to the two degree-of-freedom motion of the wheel spokes, or separate from each other to form a deformed shape.

A deformable wheel includes: a plurality of lobes; wheel spokes connected to the plurality of lobes, respectively; and hinges pivotably connecting the wheel spokes to the lobes, wherein the wheel spokes are capable of two degree-of-freedom motion, and the plurality of lobes either form a circular shape due to the two degree-of-freedom motion of the wheel spokes, or separate from each other to form a deformed shape.

A deformable wheel assembly according to the present invention is characterized by comprising: a main frame provided with a main driving shaft that is connected to and rotated by a driving means of a driving body including a vehicle; a rotation driving unit which is provided on the main frame and connected to the driving means, and provides rotational power separately from the main driving shaft; an extendable driving unit provided on the main frame and connected to the driving means; and a link unit which is provided on the main frame and forms the outer shape of a wheel, and changes the shape of the wheel into a deformed shape including a circular or elliptical shape by the operation of the extendable driving unit. The rotation driving unit is connected to a wheel unit and provides rotational power separately from the main driving shaft.

A deformable wheel assembly according to the present invention is characterized by comprising: a main frame provided with a main driving shaft that is connected to and rotated by a driving means of a driving body including a vehicle; a rotation driving unit which is provided on the main frame and connected to the driving means, and provides rotational power separately from the main driving shaft; an extendable driving unit provided on the main frame and connected to the driving means; and a link unit which is provided on the main frame and forms the outer shape of a wheel, and changes the shape of the wheel into a deformed shape including a circular or elliptical shape by the operation of the extendable driving unit. The rotation driving unit is connected to a wheel unit and provides rotational power separately from the main driving shaft.

A method and apparatus for connected deployable arms off of cylindrical surfaces including an outer cylinder defining an outer circumference and an inner cylinder concentric with the outer cylinder around a central aperture, one or more primary developable mechanisms linked to one or more secondary developable mechanisms. The deployable arms transition from a first closed state wherein the primary developable mechanisms and secondary developable mechanisms are contained entirely within the outer cylinder outer circumference to a second open state wherein the inner cylinder rotates relative to the outer cylinder, forcing the primary developable mechanisms and secondary developable mechanisms to extend outside the outer cylinder outer circumference.

A method and apparatus for connected deployable arms off of cylindrical surfaces including an outer cylinder defining an outer circumference and an inner cylinder concentric with the outer cylinder around a central aperture, one or more primary developable mechanisms linked to one or more secondary developable mechanisms. The deployable arms transition from a first closed state wherein the primary developable mechanisms and secondary developable mechanisms are contained entirely within the outer cylinder outer circumference to a second open state wherein the inner cylinder rotates relative to the outer cylinder, forcing the primary developable mechanisms and secondary developable mechanisms to extend outside the outer cylinder outer circumference.

An embodiment wheel includes a wheel frame unit including a plurality of peripheral regions, a driving power unit disposed at a first side of the wheel frame unit and configured to provide a rotational force that allows the wheel frame unit to perform a rotational motion about a central axis, and a walking power unit disposed at the first side of the wheel frame unit and configured to provide power that changes relative positions between the plurality of peripheral regions.

An embodiment wheel includes a wheel frame unit including a plurality of peripheral regions, a driving power unit disposed at a first side of the wheel frame unit and configured to provide a rotational force that allows the wheel frame unit to perform a rotational motion about a central axis, and a walking power unit disposed at the first side of the wheel frame unit and configured to provide power that changes relative positions between the plurality of peripheral regions.