A training wheel apparatus for learning to ride a bicycle includes a lift activation assembly, wherein the lift activation assembly includes a grip. The training wheel apparatus further includes a wheel mount assembly configured to operatively connect to a wheel. The training wheel apparatus further includes a cable configured to operatively connect to the lift activation assembly and the wheel mount assembly via the grip. When activated by rotation of the grip in a first direction, the lift activation assembly is configured to use the cable to change an elevation of the wheel between a first position.

A safe two-wheeled self-balancing vehicle includes two power wheels, a motion sensor, a control circuit, a chassis structure, a direction control input device, and a power source. The power wheels are installed at two sides of the chassis structure. The motion sensor is connected to the control circuit and fixed to the chassis structure opposite thereto. The direction control input device is connected to the control circuit. The control circuit drives the power wheels. A protection wheel support is disposed at a front side or both the front side and a rear side of the chassis structure. A floating protection wheel is installed at a front end of the protection wheel support. The protection wheel support is connected with the chassis structure or a structure of the protection wheel support, which enables the floating protection wheel to move freely in a vertical direction with respect to the chassis structure.

A safe two-wheeled self-balancing vehicle includes two power wheels, a motion sensor, a control circuit, a chassis structure, a direction control input device, and a power source. The power wheels are installed at two sides of the chassis structure. The motion sensor is connected to the control circuit and fixed to the chassis structure opposite thereto. The direction control input device is connected to the control circuit. The control circuit drives the power wheels. A protection wheel support is disposed at a front side or both the front side and a rear side of the chassis structure. A floating protection wheel is installed at a front end of the protection wheel support. The protection wheel support is connected with the chassis structure or a structure of the protection wheel support, which enables the floating protection wheel to move freely in a vertical direction with respect to the chassis structure.

A mobile walking aid includes an undercarriage, a frame and a support for a person's leg. The undercarriage comprises a two-wheeled front axle and a rear axle. The rear axle can be converted between a single-wheeled version with a first wheel, and a two-wheeled version. In order to convert from the single-wheeled version to the two-wheeled version, a conversion kit can be provided which comprises an axle extension that can be mounted on the axle of the first wheel, and a second wheel. The axle extension can be mounted, optionally, on both sides of the axle of the first wheel which is arranged laterally and centrally between the front wheels.

A mobile walking aid includes an undercarriage, a frame and a support for a person's leg. The undercarriage comprises a two-wheeled front axle and a rear axle. The rear axle can be converted between a single-wheeled version with a first wheel, and a two-wheeled version. In order to convert from the single-wheeled version to the two-wheeled version, a conversion kit can be provided which comprises an axle extension that can be mounted on the axle of the first wheel, and a second wheel. The axle extension can be mounted, optionally, on both sides of the axle of the first wheel which is arranged laterally and centrally between the front wheels.

An auxiliary wheel system for a scooter includes an auxiliary wheel, an arm, an drive assembly, and an operation module. The arm has a first end fixed to the auxiliary wheel, and a second end pivotally fixed to a frame of the scooter via a joint attached at the second end. The drive assembly is configured to pivot the arm about the joint between a raised position and a lowered position with respect to the frame wherein the auxiliary wheel is vertically offset from a ground surface and in the lowered position. The operation module is configured to cause the arm to pivot about the joint between the raised position and the lowered position based on a tilt of the frame with respect to the ground surface exceeding a threshold value.

An auxiliary wheel system for a scooter includes an auxiliary wheel, an arm, an drive assembly, and an operation module. The arm has a first end fixed to the auxiliary wheel, and a second end pivotally fixed to a frame of the scooter via a joint attached at the second end. The drive assembly is configured to pivot the arm about the joint between a raised position and a lowered position with respect to the frame wherein the auxiliary wheel is vertically offset from a ground surface and in the lowered position. The operation module is configured to cause the arm to pivot about the joint between the raised position and the lowered position based on a tilt of the frame with respect to the ground surface exceeding a threshold value.

Disclosed is an autonomous bicycle system including a navigation system, a steering system, a pedal assist system providing extra propulsion when engaged, and provides a combination of internal and external sensors, cameras for detecting threats and obstacles in an environment. Respectively the autonomous bicycle can be controlled manually or controlled remotely by a control network alternatively in real-time to switch from a manual driving state to an autonomous driving state or vice versa in respect to mechanical motion involving steering, velocity and position and maintaining balance support of autonomous bicycle when in motion or when stationary. A control network providing a virtual operator systematically controlling a current position of the autonomous bicycle in real-time based on at least one rider-selected starting location and destination location, and a smartphone connected therein providing an APP linking the rider to use the autonomous bicycle for various rider plans, control network plans or service plans.

A bike having an automatic landing wheel apparatus includes a left landing wheel arm on the left side of the bike to vertically move a left landing wheel rotatably coupled to the lower end portion thereof. A right landing wheel arm on the right side of the bike vertically moves a right landing wheel rotatably coupled to the lower end portion thereof. A left driving unit drives the left landing wheel arm to move the left landing wheel upward and downward. A right driving unit drives the right landing wheel arm to move the right landing wheel upward and downward. A speed detection unit detects the speed of the bike. A controller is connected with the speed detection unit, the left driving unit, and the right driving unit to move the left and right landing wheels upward or downward in response to the detected speed of the bike.

A bike having an automatic landing wheel apparatus includes a left landing wheel arm on the left side of the bike to vertically move a left landing wheel rotatably coupled to the lower end portion thereof. A right landing wheel arm on the right side of the bike vertically moves a right landing wheel rotatably coupled to the lower end portion thereof. A left driving unit drives the left landing wheel arm to move the left landing wheel upward and downward. A right driving unit drives the right landing wheel arm to move the right landing wheel upward and downward. A speed detection unit detects the speed of the bike. A controller is connected with the speed detection unit, the left driving unit, and the right driving unit to move the left and right landing wheels upward or downward in response to the detected speed of the bike.