A wheeled cart includes a number of unique methods to synchronously stow all of the rear wheels of a fold flat, compact wheeled cart device without removing any of the wheels themselves and the innovations are applicable to cargo carriers, golf bag carts, trolleys, baby strollers, and other devices for moving cargo. In alternative designs, the folding motion of either the forward wheel frame, or the swiveling motion of the rear wheel frame, or both, synchronously setup or stow the cart's at least two rear wheels to achieve an ultra-thin stowed profile, orienting all the cart's wheels in a co-planar stowed relationship, closely parallel with all other parts.

A wheeled cart includes a number of unique methods to synchronously stow all of the rear wheels of a fold flat, compact wheeled cart device without removing any of the wheels themselves and the innovations are applicable to cargo carriers, golf bag carts, trolleys, baby strollers, and other devices for moving cargo. In alternative designs, the folding motion of either the forward wheel frame, or the swiveling motion of the rear wheel frame, or both, synchronously setup or stow the cart's at least two rear wheels to achieve an ultra-thin stowed profile, orienting all the cart's wheels in a co-planar stowed relationship, closely parallel with all other parts.

A collapsible stroller comprising a handle assembly, a front leg assembly and a rear leg assembly pivotably connected to one another such that the stroller is able to be moved between a folded configuration, where the front leg and handle assemblies are folded to positions substantially adjacent to the rear leg assembly, and an unfolded configuration, where the front leg and handle assemblies are unfolded to positions away from the rear leg assembly, and a link assembly comprising a front member and a rear member pivotally connected to one another, wherein the front member is pivotally connected to an intermediate portion of the front leg assembly and the rear member is pivotally connected to an intermediate portion of the rear leg assembly, such that when the stroller is moved to its folded configuration the front and rear members are folded toward each other to lie substantially adjacent to one another and the front and rear leg assemblies, and when the stroller is moved to its unfolded configuration the front and rear members are folded away from each other and the front and rear leg assemblies such that they are substantially coplanar with one another, and wherein the link assembly further comprises a biasing means for biasing the front and rear link members toward their unfolded positions.

Various of the disclosed embodiments concern a safety apparatus that is positioned adjacent to and attached to a carriage device, thereby substantially improving the safety of individuals seated in the carriage device. The safety apparatus can include a structural frame, one or more front contacts, one or more rear contacts, a support bar, one or more handles, and at least one connector. The at least one connector allows the safety apparatus to be detachably connected or fixedly attached to the carriage device. The safety apparatus may also be adjustable or collapsible, which permits its footprint to be reduced when not in use. In some embodiments, the safety apparatus includes a support bar and/or basket that allows a user to hang or place items, such as a purse or diaper bag, without causing the safety apparatus or the carriage device to become unbalanced.

Various of the disclosed embodiments concern a safety apparatus that is positioned adjacent to and attached to a carriage device, thereby substantially improving the safety of individuals seated in the carriage device. The safety apparatus can include a structural frame, one or more front contacts, one or more rear contacts, a support bar, one or more handles, and at least one connector. The at least one connector allows the safety apparatus to be detachably connected or fixedly attached to the carriage device. The safety apparatus may also be adjustable or collapsible, which permits its footprint to be reduced when not in use. In some embodiments, the safety apparatus includes a support bar and/or basket that allows a user to hang or place items, such as a purse or diaper bag, without causing the safety apparatus or the carriage device to become unbalanced.

A collapsible stroller comprising a handle assembly, a front leg assembly and a rear leg assembly pivotably connected to one another such that the stroller is able to be moved between a folded configuration, where the front leg and handle assemblies are folded to positions substantially adjacent to the rear leg assembly, and an unfolded configuration, where the front leg and handle assemblies are unfolded to positions away from the rear leg assembly, and a link assembly comprising a front member and a rear member pivotally connected to one another, wherein the front member is pivotally connected to an intermediate portion of the front leg assembly and the rear member is pivotally connected to an intermediate portion of the rear leg assembly, such that when the stroller is moved to its folded configuration the front and rear members are folded toward each other to lie substantially adjacent to one another and the front and rear leg assemblies, and when the stroller is moved to its unfolded configuration the front and rear members are folded away from each other and the front and rear leg assemblies such that they are substantially coplanar with one another, and wherein the link assembly further comprises a biasing means for biasing the front and rear link members toward their unfolded positions.

A folding hook structure comprising: a shell, fixed to the first object, and at least partially accommodates other parts of the folding hook structure; a rotating disk , fixed to the second object, and disposed in the shell to be rotatable around a rotation center in respect to the shell, with a folding hook groove disposed on a disk surface of the rotating disk, the folding hook groove including a circumferential section extending in a circumferential direction of the rotating disk with the rotation center as a center, and a radial section extending from the circumferential section along a radial direction of the rotating disk; a folding hook , disposed in the shell, and arranged movable between a locked position and a released position along the radial direction of the rotating disk, the folding hook being inserted in the folding hook groove.

A stroller includes a rear leg, a restraining member, a front leg, a wheel base and a wheel. The restraining member is disposed on the rear leg. The front leg is capable of being folded with respect to the rear leg. The wheel base is pivotally connected to the front leg. The wheel is pivotally connected to the wheel base. When the front leg is folded with respect to the rear leg, the restraining member restrains the wheel from rotating, so as to prevent the wheel from deflection. Accordingly, the folded stroller can stand stably and will not topple.

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.

The present invention provides a baby stroller frame linked folding device. A linked folding joint is provided on the upper end of a rear leg frame and is pivotally connected with a front leg frame and a handlebar frame. The handlebar frame comprises a lower handlebar frame that is pivotally connected to the linked folding joint, a handlebar folding clutch joint configured on the upper end of the lower handlebar frame, and an upper handlebar frame pivotally connected to the handlebar folding clutch joint. On the inner side of the linked folding joint, a seatback clutch joint is configured, for installation of a seatback frame, and a slide base is configured, which can slide along the rear leg frame, and both sides of the top end of the slide base are respectively and pivotally connected with a connecting rod, each respectively and pivotally connected to the front leg frame and the lower handlebar frame; when the upper handlebar frame turns and folds onto the lower handlebar frame, it will firstly drive the releasing push block inside the seatback clutch joint so that the seatback frame will fall down, then, the lower sliding block pushes the hook to release the slide base, so that the slide base will slide downward, causing the two connecting rods to pull the front leg frame and the handlebar frame and fold them onto the rear leg frame. Thus, the baby stroller frame can be folded all at once.