Embodiments of a smart mobility aid device may have sensors to collect, monitor, analyze and represent data including but not limited to activity tracking, biometrics and safety and emergency features. The activity tracking include number of steps, miles, and activity speed, user pressure on a device, activity types and analysis. The user biometric data includes but is not limited to blood work, blood pressure, blood sugar, heart rate, oxygen level/rate, ECG, EMG, muscle strain, humidity, UV, body temperature. Additional features include an emergency button, fall detection, warnings, and user pattern analysis changes. The mobility aid device is connected to other smart electronic device and/or the Internet using but not limited to Bluetooth, Wi-Fi, and or/and SIM card. The device gives the user or/and caregiver live feedback about user health metrics and status using a data representation method.

A drivable exercise machine may include an electric vehicle with human power input provided by a high output, variable-resistance pedal-driven generator. The vehicle may include a computing device with a user interface that mimics an electric exercise bicycle. Using one or more program modes, a user may activate pre-set, custom and dynamic terrain-based exercise program profiles while commuting.

A motor-less leg-powered curved treadmill produced that allows people to walk, jog, run, and sprint without making any adjustments to the treadmill other than shifting the user's center of gravity forward and backwards. A closed loop treadmill belt running between front and rear pulley rollers is formed with a low friction running surface of transverse aluminum, wooden, plastic, rubber or carbon fiber slats attached to each other in a resilient fashion. An essential feature of treadmill is the concave shape of the upper portion of the belt running surface, the treadmill configurations ensure that this shape is maintained during actual use. These configurations prevent the concave upper running surface portion from being pulled taut into a flat shape between the front and rear pulley rollers. The slats of the treadmill each have an end view crossectional I-beam shape, for strength and stability of the slat positioned upon the treadmill belt.

A motor-less leg-powered curved treadmill produced that allows people to walk, jog, run, and sprint without making any adjustments to the treadmill other than shifting the user's center of gravity forward and backwards. A closed loop treadmill belt running between front and rear pulley rollers is formed with a low friction running surface of transverse aluminum, wooden, plastic, rubber or carbon fiber slats attached to each other in a resilient fashion. An essential feature of treadmill is the concave shape of the upper portion of the belt running surface, the treadmill configurations ensure that this shape is maintained during actual use. These configurations prevent the concave upper running surface portion from being pulled taut into a flat shape between the front and rear pulley rollers. The slats of the treadmill each have an end view crossectional I-beam shape, for strength and stability of the slat positioned upon the treadmill belt.

Provided is a method for fastening a separation type tricycle in which a connecting pipe for connecting a front wheel part and a rear wheel part can be separated from and fastened to a head tube of the front wheel part, wherein the front wheel part and the rear wheel part are separated from each other by forming an ear-shaped groove, in which a handle bar can be put, in a right-side-open rectangular shaped plate fixed to the end of the connecting pipe so as to be used for attachment/detachment in a fastening device of the head tube, and then the end of a connecting bar for connecting the front wheel part and the rear wheel part is put on the handle bar by using the groove and another place is fixed thereto so as to set three wheels at the shortest distance therewith, thereby conveniently moving and storing the tricycle.

Transportation vehicles, suspension systems and related methods are provided herein. A three wheeled vehicle can include a frame having first and second sides and front and rear ends and a steerable front wheel secured to the front end of the frame. The vehicle can also include a first trailing wheel arm with a first rear wheel and a second trailing wheel arm with a second rear wheel. The vehicle can include a horizontal linkage having first and second ends and a midsection therebetween. The horizontal linkage can be pivotably connected to a pintle on the frame at the midsection with the horizontal linkage linked to an underside of the first trailing wheel arm between the first wheel and the central suspension joint and linked to an underside of the second trailing wheel arm between the second wheel and the central suspension joint.

A foldable child's tricycle and a folding method thereof are provided, wherein the foldable child's tricycle comprises a body frame and a handlebar arranged in the front of the body frame; wherein the body frame includes a head tube, an upper connecting rod assembly, a lower connecting rod assembly, a push rod assembly, and a supporting rod; the upper connecting rod assembly, the head tube, the lower connecting rod assembly, and the supporting rod form a four-bar linkage; the push rod assembly is rotatably connected to the upper connecting rod assembly, and is fixed to or separated from the lower connecting rod assembly via a locking device; when folding, firstly unlocking the locking device; then pulling the push rod assembly upwardly such that the push rod assembly is separated from the lower connecting rod assembly; finally turning over the push rod assembly forwardly, and the folding volume thereof is small.

The present invention is intended to provide a tiltable bicycle front suspension system with shock absorption and composite steering, including a suspension structure and a steering structure, where the suspension structure includes a vehicle body and symmetrically-arranged front wheels; each front wheel is provided with a steering knuckle; a fork arm fixing frame is movably disposed at one side, far away from the front wheel, of the steering knuckle; an upper fork arm and a lower fork arm, which are arranged in pair, are disposed between the fork arm fixing frame and the vehicle body; an alignment spring is disposed between the upper fork arm and the lower fork arm; and a main shock absorbing spring is disposed between the lower fork arms. The system provided by the present invention can make the driving more accurate and more labor-saving.

A vehicle includes a vehicle frame and a steering post rotatably supported by the vehicle frame. The vehicle includes a crossbar supported by the steering post. The crossbar is bisected by the steering post and the crossbar elongated in a cross-vehicle direction from a first end to a second end. The vehicle includes a brace supported by the crossbar. The brace includes a first portion, a second portion spaced from the first portion, and a curved portion connecting the first portion to the second portion. The first portion is supported by the first end of the crossbar and the second portion is supported by the second end of the crossbar.

A vehicle includes a first suspension between a body and a front wheel, and a second suspension between the body and a rear wheel. An angle 1 represents a ramp brake-over angle, and angles 2, 3, and 4 respectively represent angles corresponding to the ramp brake-over angle when the first and the second suspension are fully stretched, fully compressed and fully stretched respectively, and fully stretched and fully compressed respectively. When a wheelbase is not smaller than about 1340 mm, the angle 1 is not smaller than about 55 degrees, a value 2/1 is not smaller than about 1.25, a value 3/1 is not smaller than about 0.9, and a value 4/1 is not smaller than about 0.8. When the wheelbase is not smaller than about 1340 mm and not greater than about 2000 mm, a wheel travel on the rear wheel side is not smaller than about 360 mm, a ratio of a stretch-side value to a compression-side value (stretch-side/compression-side) of the wheel travel on the rear wheel side is not smaller than about 0.5, and a value 2/1 is not smaller than about 1.25.