A foldable personal such as a tricycle which can be convertible into a stroller, is configured for accommodating a child therein and for preventing, when desired, the child from being able to steer the vehicle, vehicle having an operational state and a storage state, in which it can take an extremely compact form. The vehicle has a longitudinal axis lying in its vertical plane of symmetry and having a horizontal reference plane perpendicular to the plane of symmetry, and it takes its compact form in the storage state both in the direction along its longitudinal axis and in the directions perpendicular to this axis both along the plane of symmetry and perpendicular to the plane of symmetry.

A motorized riding stroller is provided including a frame having a base platform, a handlebar, and a plurality of legs, wherein the plurality of legs extend from a lower surface of the base platform. The handlebar is pivotally affixed to a rear side of the base platform. An interchangeable seat is removably securable to an upper surface of the base platform. A standing platform is disposed between a pair of rear legs, wherein the pair of rear legs are disposed on opposing lateral sides of the base platform along a rear side thereof. A wheel is affixed to a distal end of each leg of the plurality of legs, wherein each wheel is operably connected to a motor disposed within an interior of the frame. The wheels rotate upon actuation of a drive control disposed on the handlebar, such that the stroller can move in opposing directions.

In certain embodiments, a stroller system includes a stroller frame connected to three or more wheels, a housing unit operable to accommodate a rider, a motor coupled to the frame and to at least one of the wheels, and a brake coupled to at least one of the wheels. The system further includes one or more processors coupled to the frame, a first electronic display coupled to the frame and communicatively coupled to at least one of the one or more processors, and sensors coupled to the frame and to at least one processor. A distance sensor measures a distance between the distance sensor and an object, and a speed sensor measures the speed of the frame. The one or more processors are operable to receive measurements from the distance sensor and speed sensor, and to determine, based on the received measurements, whether to apply the brake.

Wheel assemblies and strollers comprising wheel assemblies are provided. The wheel assembly can comprise a standard wheel and a modular wheel, where the standard wheel has a first diameter that is greater than the diameter of the modular wheel. The modular wheel can be fixedly or removably attached to the standard wheel. The stroller can comprise at least one rear wheel assembly located proximate to a rear of the base. The stroller can also comprise at last one front wheel assembly located proximate to a front of the base. The stroller can also comprise a pulling and/or steering mechanism.

A laterally collapsible, user-pushed, four-wheeled rollator, stroller or the like has swiveling front wheels for steering, each mounted in a fork with a vertical post, with a toothed pulley fixed thereto, rotatable in a bearing housing fixed at the front end of right and left side frames. The two swiveling front wheels can swivel to any steering angle but always in unison with each other by virtue of a flexible toothed synchronous belt extending between the toothed pulleys. The interior of each bearing housing closely surrounds each toothed pulley and the belt, preventing any disengagement of the belt from either toothed pulley even when the belt becomes slack when the left and right side frames are folded towards each other. A synchronous chain with sprockets can also be used. Tether means pull the belt/chain rearwardly to a protected position during folding.

A motorized riding stroller is provided including a frame having a base platform, a handlebar, and a plurality of legs, wherein the plurality of legs extend from a lower surface of the base platform. The handlebar is pivotally affixed to a rear side of the base platform. An interchangeable seat is removably securable to an upper surface of the base platform. A standing platform is disposed between a pair of rear legs, wherein the pair of rear legs are disposed on opposing lateral sides of the base platform along a rear side thereof. A wheel is affixed to a distal end of each leg of the plurality of legs, wherein each wheel is operably connected to a motor disposed within an interior of the frame. The wheels rotate upon actuation of a drive control disposed on the handlebar, such that the stroller can move in opposing directions.

A multipurpose riding apparatus having a chair body pivotally attached to a chair base, a seat associated with the chair body, a pair of front wheels rotationally attached to the chair body, a back wheel rotationally attached to the chair base; a brake attached to the chair body and associated with the back wheel, such that selective actuation of the brake prevents the rotation of the back wheel; an orientation lock associated with the chair body and the chair base, wherein the orientation lock is configured to selectively prevent rotation of the chair body about the chair base. The multipurpose riding apparatus may be ridden and controlled by a standing user that is standing on the chair base, while simultaneously holding a sitting user within the seat. The multipurpose riding apparatus may be folded into a compact package while not in use, thus facilitating easy storage and transport.

There is provided a pram frame (200) comprising a first roller attachment point (221) configured to engage with a first roller set (121) and a mechanism (231) configured to engage with the first roller set (121) via the first roller attachment point (221). The mechanism (231) is configured to provide driven steering of the first roller set (121) when a user steers the pram frame (200).

A wheeled childcare device includes: a body frame; a front-wheel caster mechanism and a rear-wheel caster mechanism each including a caster holding member and a caster pivot member and each configured to allow a front wheel or a rear wheel to swivel; a front-wheel caster lock member and a rear-wheel caster lock member each configured to assume a lock position and an unlock position; a front-wheel-side displacement member and a rear-wheel-side displacement member each configured to be displaced between a first position corresponding to the lock position of the caster lock member and a second position corresponding to the unlock position of the caster lock member, according to switching of the position of a push bar; and an operation mechanism provided on the push bar and configured to operate the displacement member to switch the displacement member from the first position to the second position.

A wheeled childcare device includes: a body frame; a caster mechanism including a caster holding member and a caster pivot member and configured to allow a front wheel or a rear wheel to swivel; a caster lock member provided in the caster mechanism and configured to assume a lock position and an unlock position; a displacement member connected to the caster lock member via a connecting member and configured to be displaced between a first position corresponding to the lock position of the caster lock member and a second position corresponding to the unlock position of the caster lock member, according to switching of the position of a push bar; and an operation mechanism provided on the push bar and configured to operate the displacement member to switch the displacement member from the first position to the second position.