Embodiments include strollers having removable seats. An example stroller may include rear wheels, front wheels, and a frame including a handle portion, a rear wheel support portion, a front wheel support portion and a folding mechanism connecting the front wheel support portion and the handle portion in both an unfolded configuration and in a folded configuration. The frame may include a stroller seat support portion positioned at a first vertical position adjacent the handle portion, and a front seat attachment configured for attachment to the front wheel support portion at a second vertical position substantially lower than the first vertical position. The front seat attachment may be configured to support the front stroller seat substantially over the front wheels so that a center of gravity of the stroller system is between the front wheels and the rear wheels.

A pivot joint includes a first joining part, a second joining part and a coupling part pivotally connected with one another, the second joining part being disposed between the first joining part and the coupling part, a latch carried with the second joining part, and a linking mechanism configured to couple the latch to the first joining part so that a rotation of the first joining part relative to the second joining part in a first direction causes the latch to disengage from the coupling part for rotation of the second joining part relative to the coupling part, and a rotation of the first joining part relative to the second joining part in a second direction causes the latch to engage with the coupling part to prevent rotation of the second joining part relative to the coupling part. Moreover, a child stroller apparatus is also described herein.

A child stroller system can convert from carrying a single child to carrying two children without removing a first child-carrying apparatus from the stroller and without adding adapters to the stroller. Both child-carrying apparatuses can be repositioned with respect to the stroller's chassis when mounted on the stroller. A self-standing and collapsible auxiliary basket can be mounted on the stroller in place of one of the child-carrying apparatuses.

A collapsible or foldable stroller frame is disclosed herein. The stroller frame is configured to be folded into a compact size using a series of connections between a handle portion, front leg portion, and rear leg portion. In one aspect, a basket assembly is also provided that is attached to the stroller frame and is configured to fold into a perimeter defined by the folded stroller frame. In another aspect, an adaptor assembly is provided that allows for a connection or support interface between a carrier and the stroller frame.

A seat height adjustment mechanism includes a locking bar and a locking element. The locking bar is disposed in a stroller frame and has locking holes spaced apart. Each of the locking holes has a stop portion protruding therein. The locking element is mounted on a seat and has an engaging end. The engaging end is separably engaged in any one of the locking holes and has an engaging hook protruding in a direction, and the direction is crossed with another direction in which the engaging end moves when the engaging end is separating from the locking hole. The engaging hook separably presses against the stop portion. Therefore, the engaging end cannot separate from the locking hole. Even when wrongly operated, the locking element cannot be rotated and unlocked and thereby prevents the seat from unnecessarily sliding downward, so as to ensure safety of a baby at the seat.

A stroller with a chassis frame which is supportable on a ground via at least three wheels and having at least two receiving devices, in particular child receiving devices, which can be connected to the chassis frame via adapters, the adapters being designed and positionable on the chassis frame such that, with regard to a connection of the receiving devices as well as their alignment and, if appropriate, their manipulation, they do not allow at least one configuration in which the overall center of gravity of the transport device and receiving devices in top view and thus the overall center of gravity line does not lie within the projection area bounded by the wheels or their standing surfaces, and only permit such that the overall center of gravity of the transport device and receiving devices in top view and thus the overall center of gravity line always lies within the projection area bounded by the wheels or their standing surfaces.

A system for converting an infant child seat to a stroller may include an infant child seat, a wheeled frame, and a handle. The handle is coupled to the infant child seat and configured to manipulate the wheeled frame when the infant child seat is mounted. A wheeled frame, being removably securable to an infant child seat, may include a frame movable between a folded storage configuration and an expanded stroller configuration. The frame is configured to removably receive an infant child seat and includes a plurality of wheels. The wheeled frame does not define a handle. A method of converting an infant child seat including a handle to a stroller may include coupling the seat to a wheeled frame. The method further includes manually actuating, by a first hand of a user, the handle into a stroller position. The seat coupled to the frame are operable as a stroller.

The invention relates to a stroller comprising a stroller chassis and a child receiving device for receiving at least one child. The child receiving device can be oriented in at least two different orientations, in particular a forwards orientation and a rearwards orientation, relative to the stroller chassis, wherein at least one receiving section of the child receiving device is movable, in particular at least partly pivotal, such that at least one first and second setting of the child receiving device can be set, and a coupling device is provided and designed such that a conversion from at least one first orientation of the child receiving device to a second orientation is blocked in at least one first setting of the child receiving device.

A dolly assembly includes a parent dolly including a support frame that defines a truck-receiving volume. A child dolly includes a support frame that is sized to be received within the truck-receiving volume. The child dolly includes a child dolly carousel. The parent dolly and the child dolly together include a locking assembly including a locking arm that prevents rotation of the child dolly carousel in a locked position.

A fastening apparatus includes: a base having a first sliding groove; a rotation member pivotally connected to the base and having at least two locking states, the rotation member has a second sliding groove; a locking member having a locked state and an unlocked state, in the locked state, the rotation member is located in both the first sliding groove and the second sliding groove; in the unlocked state, the locking member is withdrawn from the first sliding groove or the second sliding groove to allow the rotation member to rotate relative to the base; an elastic element configured to maintain the locking member in the locked state; and a releasing member configured to drive the locking member to move against an elastic force of the elastic element, such that the locking member is switched from the locked state to the unlocked state.