An unmanned vehicle is provided that includes a housing configured to rotate about a rotational axis. The housing supports a pendulum drive assembly having coaxial first and second drive axles that are coaxially aligned with the rotational axis. A first rotating member is mechanically coupled to the first drive axle and configured to rotate with the first drive axle. A second rotating member is mechanically coupled to the second drive axle and configured to rotate with the second drive axle. The pendulum drive assembly includes a first electrical motor and corresponding first transmission system that are operably coupled to the first drive axle as well as a second electrical motor and corresponding second transmission system that are operably coupled to the second drive axle. The first electrical motor, the first transmission system, the second electrical motor, and the second transmission system contribute to an effective pendulum mass disposed within the housing that rotates about the rotational axis of the housing relative to the housing and driven by operation of at least one the first electrical motor and second electrical motor to propel the unmanned vehicle.

The invention provides a vehicle drivable in use by a person walking or running while seated comprising: a frame; a large diameter front wheel non-steerable with respect to the frame, a seat for supporting a user's weight while walking or running, the frame configured to carry the seat suspended on the front wheel, a small diameter, steerable rear wheel journalled to the frame at a steering pivot axis, the seat being rotatable forwardly with respect to the front wheel and comprising a seat base for supporting a user and further comprising a backrest for engaging the user's back in use. The large front wheel may be of approximate diameter of a user's leg (typically an adult human), thus the large front wheel may be of similar size to a bicycle wheel for the user.

The invention provides a vehicle drivable in use by a person walking or running while seated comprising: a frame; a large diameter front wheel non-steerable with respect to the frame, a seat for supporting a user's weight while walking or running, the frame configured to carry the seat suspended on the front wheel, a small diameter, steerable rear wheel journalled to the frame at a steering pivot axis, the seat being rotatable forwardly with respect to the front wheel and comprising a seat base for supporting a user and further comprising a backrest for engaging the user's back in use. The large front wheel may be of approximate diameter of a user's leg (typically an adult human), thus the large front wheel may be of similar size to a bicycle wheel for the user.

Improved skateboards and methods of obtaining or providing skateboards with improved trucks. Trucks have two axles or axes, two primary wheels, and two secondary wheels, and skateboards have eight wheels, four in front and four at the rear portion of the skateboard. The four primary wheels support most or all of the weight of the skateboard when the skateboard is on a flat surface, and the two secondary wheels support the weight of one portion of the skateboard (e.g., front or rear) when the primary wheels cross a crack (e.g., a sidewalk contraction joint). In various embodiments, the secondary wheels are located outboard of the primary wheels. Further, in a number of embodiments, the axis of rotation or axle of the primary wheels remains parallel to that of the secondary wheels, whether the skateboard is going straight or turning.

A scooter comprises a main frame, a handle bar arranged in front of the main frame and extending upward, a handle mounted at the upper end of the handle bar, and a front wheel and a rear wheel arranged below the main frame, the main frame including a connecting seat in the front thereof used for connecting with the handle bar, and a connecting bar extending backward from the connecting seat, with the connecting bar provided on the left and right sides with a left pedal and a right pedal extending outward, respectively. While pedaling, a pedaler alternatively pedals on the left and right pedals with both feet, which changes the traditional way of pedaling with one foot in the front and the other in the rear, and has better stability and higher pedaling speed.

A scooter comprises a main frame, a handle bar arranged in front of the main frame and extending upward, a handle mounted at the upper end of the handle bar, and a front wheel and a rear wheel arranged below the main frame, the main frame including a connecting seat in the front thereof used for connecting with the handle bar, and a connecting bar extending backward from the connecting seat, with the connecting bar provided on the left and right sides with a left pedal and a right pedal extending outward, respectively. While pedaling, a pedaler alternatively pedals on the left and right pedals with both feet, which changes the traditional way of pedaling with one foot in the front and the other in the rear, and has better stability and higher pedaling speed.

A personal transportation device having first and second elongated foot support member that are arranged substantially in parallel and approximate to some extent the experience of skiing. The lateral distance of the foot support members may be adjusted. Biased-direction caster wheels may be provided that permit propulsion from side to side movement as well as kicking off and other propulsion techniques. Tiltable steering assemblies are disclosed that may impart a tilting of a front wheel to achieve turning. Various embodiments are disclosed.

The present invention relates to a scooter having revolving footboards comprising: a head tube; a stem rotatbly held in said head tube; a fork connected to the lower end of said stem; at least one front wheel rotatably connected to said fork of said stem; a handle connected to the upper end of said stem; two rear tubes connected to said head tube; two swivel rear wheels, where each of said swivel wheels is pivotally connected to the rear of one of said rear tubes; and at least two revolving footboards which are rotatably connected on said rear tubes.

The present invention relates to a scooter having revolving footboards comprising: a head tube; a stem rotatbly held in said head tube; a fork connected to the lower end of said stem; at least one front wheel rotatably connected to said fork of said stem; a handle connected to the upper end of said stem; two rear tubes connected to said head tube; two swivel rear wheels, where each of said swivel wheels is pivotally connected to the rear of one of said rear tubes; and at least two revolving footboards which are rotatably connected on said rear tubes.

The bicycle stand includes a first rod, a second rod, and a pivot structure. The first rod has a first end, a second end, and a first pivot portion between the first end and the second end. The second rod has a third end, a fourth end, and a second pivot portion between the third end and the fourth end. The pivot structure is pivotally connected to the first pivot portion and the second pivot portion so that the first rod is pivotally connected with the second rod and is able to pivot between a folding position and an opening position. The first rod and the second rod are X-shaped when the first rod and the second rod are at the opening position.