Abstract: The present disclosure provides for a stand, the stand further comprised of a pair of collapsible supports for a surface such as a work bench or a press brake. The collapsible supports are secured to the bench or press brake by means of securing clamps. The collapsible supports each have a pair of legs terminating in a removeable and sliding wheel and also have telescopic arms to allow for the legs to independently pivot one from the other. An actuating mechanism is also disclosed to release and lock the legs, the actuating mechanism providing a range of motion between a first extended position to a second folded position.

Abstract: The invention relates to a child carrying device that includes a stroller configuration and a wagon configuration. The child carrying device comprises a support frame that may be rotated from an angled orientation in the stroller configuration to a substantially horizontal position in the wagon configuration.

Abstract: A wheelchair includes a seating portion on which a wheelchair user sits, a body frame that supports the seating portion, a pair of rear wheels and a pair of front wheels rotatably supported by the body frame, and a seat back portion capable of changing the inclination angle with respect to the seating portion. The wheelchair includes push-along handle portions as engaging portions capable of fixing the seat back portion to a side sill as a vehicle body member that forms a door opening of the vehicle when the seat back portion is tilted backward of the wheelchair.

Abstract: A multi child stroller includes a stroller frame and a first seat. The stroller frame has two sections adapted to fold and unfold relative to each other. The first seat is disposed on one of the two sections. The first seat includes a first seat unit and a seat back positioning member. The first seat unit has a sliding slot portion. The seat back positioning member is rotatably disposed on the stroller frame. The seat back positioning member includes a sliding bar adapted to slide inside the sliding slot portion, so as to switch the first seat unit into one of a first unfolding mode, a second unfolding mode and a folding mode.

Abstract: A stroller includes a frame, a handle, a plurality of support legs, a wheel attached to a lower end of each support leg, and a seat attached to the frame. The seat includes an internal Peltier device for selectively heating or cooling the seat. The Peltier device is powered via an onboard battery installed in an electronics housing that includes multiple USB ports. A blanket is removably secured to the seat via one or more fasteners. A processor in the electronics housing performs a method that includes activating the Peltier device to bring the seat to a preset temperature, receiving a temperature setting for the Peltier device from a temperature control button disposed on the handle, detecting a current temperature of an area within the seat, and if the current temperature of the area within the seat is greater than a threshold safe upper temperature, then deactivating the Peltier device.

Abstract: A multi child stroller includes a stroller frame and a first seat. The stroller frame has two sections adapted to fold and unfold relative to each other. The first seat is disposed on one of the two sections. The first seat includes a first seat unit and a seat back positioning member. The first seat unit has a sliding slot portion. The seat back positioning member is rotatably disposed on the stroller frame. The seat back positioning member includes a sliding bar adapted to slide inside the sliding slot portion, so as to switch the first seat unit into one of a first unfolding mode, a second unfolding mode and a folding mode.

Abstract: A bracket, which can be in the form of first and second bracket members, desirably projects outwardly from the trailer frame and includes a bracket passageway. A housing includes a housing passageway extending at least partially through the housing and that communicates with the exterior of the housing through a locking insert receiving opening. The locking insert receiving opening, the housing passageway and the bracket passageways define a locking insert receiving passageway. A locking insert couples the housing to the bracket and thereby to the trailer frame. The locking insert includes an accessory arm receiving passageway communicating with the housing exterior through the locking insert receiving opening.

Abstract: A luggage with a foldable structure between a conformation of reduced volume suitable for the stowage and a developed conformation with a volume suitable for use. The luggage has an access face and a bottom opposite to the access face. The bottom is bordered by four side faces. At least one of the two side faces is associated at least one stiffening panel, that is configured to swivel towards the bottom of the luggage. A third side face has a foldable structure lockable by a side locking device.

Abstract: A child stroller apparatus includes a stroller frame, and an adapter assembled with the stroller frame and having a first coupling portion and a second coupling portion, each of the first and second coupling portions being configurable as a mount for installation of a detachable part. The adapter is movable relative to the stroller frame to displace the first and second coupling portions, a first position of the adapter configuring the first coupling portion as the mount while maintaining an angle between the first coupling portion and the second coupling portion, and a second position of the adapter configuring the second coupling portion as the mount while maintaining the angle between the first coupling portion and the second coupling portion.

Abstract: A wheeled remote controlled infant stroller with a changing table including a changing table platform having telescopic foldable legs and being pivotably attached to a rear end of a support frame of an infant stroller body with the changing table platform pivoting outwardly away from a rear side of the infant stroller body. Also included is a remote-controlled braking system to wirelessly control the wheels and GPS tracking capabilities.

Abstract: A multi-function baby carriage comprising: base frames; a back frame installed at rear ends of the base frames to switch between a vertical position and a horizontal position and formed with a U-shaped hanger at its top for being suspended from a user's neck or a headrest of a car; a seat on the base frames to accommodate a baby; and wheel means below the base frames, wherein said wheel means include front and rear wheels, front and rear connectors, a front cross member connecting the front connectors, a rear cross member connecting the rear connectors, each of said front and rear connectors having an end rotatably connected to one of the front and rear wheels and the other end connected to one of axes, wherein said shaft is provided with a ball member, so that when the front or rear wheels are folded or unfolded, said shaft causes the front and rear wheels to move at the same time and said ball member passes through a ball holding member in a forward or backward direction to make said ball member to stop at

Abstract: A seat assembly for a patient transport device includes a seat casing including a bottom surface, a rear edge including a rear edge outward-facing surface, where the rear edge extends downward from the bottom surface in a vertical direction, and a lighting unit including a controller including a processor and a memory storing a machine readable and executable instruction set, a sensor communicatively coupled to the controller, and a light output communicatively coupled to the controller, where the light output is coupled to at least one of the bottom surface or the rear edge outward-facing surface of the seat casing, where the light output extends across the seat casing in a lateral direction, and where the light output selectively provides light beneath the seat assembly, where the controller commands the lighting unit to change between an ON position and an OFF position based on a signal from the sensor.

Abstract: A stroller for carrying a child or child restraint system, that may comprise an additional storage area or child support system when expanded. The frames include a mechanism whereby the base of the frame is expanded rearward to create a storage space roughly behind the baby seat, and optionally where a top to the storage area folds up from the rear of the frame to complete the storage area. The stroller may include detachable wheels. The stroller may also include handles or push bars that may optionally include mechanisms to assist in expanding or contracting the storage area. The stroller may also be constructed so as to be collapsible for storage.

Abstract: An infant stroller apparatus includes a leg segment and a handle segment, a joint structure including a first and a second coupling hub that are respectively affixed with the leg segment and the handle segment and are pivotally connected with each other, a mount portion connected with the joint structure, a latch assembly having an actuation surface and arranged in the two coupling hubs, and a detachable seat having a connector and a release actuator arranged adjacent to each other. The latch assembly is movable between a first and a second position for respectively locking and unlocking the leg segment and the handle segment. The release actuator can push against the actuation surface for driving an unlocking displacement of the latch assembly when the seat is installed on the mount portion.

Abstract: A foldable child support apparatus including a seat with a seat back pivotal relative to a seat base between at least one open condition for seating a child when the apparatus is unfolded and a closed condition when the apparatus is folded. A frame is provided including a handle member and front and rear leg members, which pivot about at least one frame pivot between an unfolded condition in which the handle member and the front leg members extend on generally opposite sides of the pivot and a folded condition in which the frame members are located on the same side of the pivot with the front leg members located between the handle member and rear leg members. The frame is arranged to transfer the seat between a forward facing unfolded position and a forward facing folded position and vice versa.

Abstract: A collapsible support frame particularly for an infant pushchair comprises in an erect configuration at least a centrally located elongate spine and a seating cavity within the support frame in which to receive a seat. The spine being coupled at or towards one end to a coupler and at or towards its other end to a handle assembly.

Abstract: A foldable wagon is provided having a collapsible frame that converts the wagon from a use configuration to a folded configuration for storage and transportation. The foldable wagon has a collapsible frame positonable in an open position and a collapsed position, a plurality of wheels coupled to the collapsible frame, a plurality of substantially rigid seats pivotally coupled to the collapsible frame, and a flexible housing about the collapsible frame to form a sidewall for the wagon. The substantially rigid seats each having a substantially rigid seat back and a substantially rigid seat bottom hingedly coupled to the seat back.

Abstract: A stroller (10) includes: a front leg (31); a middle leg (34) located rearward of the front leg; a rear leg (37) located rearward of the middle leg; a front-wheel holding mechanism (21) provided on the front leg; a middle-wheel holding mechanism (24) provided on the middle leg; and a rear-wheel holding mechanism (27) provided on the rear leg. The front-wheel holding mechanism is configured to rotatably and turnably hold a front wheel (22). The middle-wheel holding mechanism is configured to rotatably and unturnably hold a middle wheel (25). The rear-wheel holding mechanism is configured to rotatably and turnably hold a rear wheel (28).

Abstract: A carrier for holding a wheel unit, which is easy and simple to handle (operate), and is capable of exactly switching a condition in which a rotation of a rear wheel is restricted, and a condition in which the rotation of the rear wheel is allowed is proposed. The carrier includes: a body; a sliding member capable of being slid in one direction and held on one of a first holding position and a second holding position; an urging member urging the sliding member along the one direction. The position on which the sliding member is held after the sliding member has been returned by an urging force of the urging member, is alternately changed between the first holding position and the second holding position.

Abstract: A dual-purpose safety baby carrier includes a seat having armrests and a bottom to which a cover defining a receiving chamber is mounted. Upper and lower positioning sections are mounted to a back of the seat. A control bar is movable along the upright tubes between a position where a push key of a safety switch engages the upper positioning section to allow a wheel frame carrying wheels to be retracted into the receiving chamber for serving as a safety seat and a position where the push key engages the lower positioning section to allow the wheel frame to be expanded to form a stroller. The safety switch also includes a push button biased by a spring for locking the push key in position of engaging the upper or lower positioning section. A securing structure includes coupling members mounted to the seat for coupling a seat belt.

Abstract: A foldable rollator includes: a main support frame including two spaced-apart front support rods; a rear support frame including two spaced-apart rear support rods pivotally coupled to the front support rods, respectively; a plurality of wheels respectively installed on the main support frame and the rear support rods for rolling on the ground; an intermediate support frame coupled to the main support frame and the rear support frame, including a front support sub-frame pivotally coupled between the front support rods and a rear support sub-frame pivotally coupled between the rear support rods, the front and rear support sub-frames being further pivotally coupled to an axle; a seat unit disposed atop the intermediate support frame; and a backrest unit pivotally coupled to the axle.

Abstract: The invention relates to a seat attachment for a stroller, single stroller and double strollers. Such a seat attachment may be used to reversibly convert a single stroller into a double stroller. More specifically, versions of the seat attachment relate to a seat attachment for a stroller capable of supporting a seat such as, but not limited to, a stroller seat, a baby seat, bassinet, a pram, a car seat, or a baby carrier, for example. The seat may be supported in front of a permanent seat of the stroller.

Abstract: An integrated carrier and support system for supporting and moving a child that includes a carrier assembly and a support assembly. The support assembly may collapse and expand and, when collapsed, may fit cooperatively adjacent to the carrier.

Abstract: A convertible tandem stroller frame is capable of locking in a tandem stroller mode for installing a second seat thereby concurrently transporting two occupants, and capable of converting said mode into a single seat mode for transporting single occupant by simply manipulating a release actuator at a front portion of the convertible tandem stroller frame. The convertible tandem stroller frame may include a front rack, a rear rack, at least a longitudinal telescopic mechanism and at least a locking mechanism. The front rack and the rear rack are lockably and adjustably connected by the longitudinal telescopic mechanism, so as to be extended into the tandem stroller mode and be retracted into the single seat mode. The locking mechanism is associated with the release actuator for locking and un-locking the longitudinal telescopic mechanism by manipulating in front of the convertible tandem stroller frame.

Abstract: A folding structure of a baby stroller and includes two respective links which are connected to two lower ends of two handles. The links are connected to two front frames and pivotably connected with two respective slides which are pivotably connected to an X-shaped connection frame which is pivotably connected to two rear frames. When folding the baby stroller, the two handles are pushed downward to activate the slides by the links, the slides then activate the connection frame to pull the rear frames to let the stroller stand up. The handles are almost not overlapped with the front frames so as to reduce weight.

Abstract: A juvenile stroller includes a mobile base and a juvenile seat mounted on the mobile base. The mobile base includes wheels and a foldable frame carrying the juvenile seat.

Abstract: The present invention relates to a stroller comprising a first passenger support and a second seat positioned behind the first passenger support, the second seat having an in use position and a stowed position, where the second seat can be moved between its in use and stowed positions and back again without need to reposition the first passenger support. An associated method for folding the stroller is also disclosed, the method for collapsing the stroller including the steps of moving the second seat from its in use position to its stowed position, and then folding the stroller. The method for erecting the stroller being the reverse of the method for collapsing this.

Abstract: A dual-purpose safety baby carrier includes a seat having armrests and a bottom to which a cover defining a receiving chamber is mounted. Upper and lower positioning sections are mounted to a back of the seat. A control bar is movable along the upright tubes between a position where a push key of a safety switch engages the upper positioning section to allow a wheel frame carrying wheels to be retracted into the receiving chamber for serving as a safety seat and a position where the push key engages the lower positioning section to allow the wheel frame to be expanded to form a stroller. The safety switch also includes a push button biased by a spring for locking the push key in position of engaging the upper or lower positioning section. A securing structure includes coupling members mounted to the seat for coupling a seat belt.

Abstract: Sit or stand strollers and methods of using and making the same are described herein. An example stroller includes a frame, a first set of mounts, a second set of mounts and a removable accessory. The removable accessory comprises a seat to be mounted to at least one of the first or second sets of mounts, a platform positioned beneath the seat, the platform to provide a standing surface for a stroller occupant, and a handle cantilevered above the platform and in front of the seat to provide a grip for the occupant when standing on the standing surface.

Abstract: A baby safety car seat convertible into a rollable baby seat, and comprising a front, head area and a rear, feet area, the head area being higher than the feet area; a right and left pair of front and rear legs, and a handle. The legs of each pair have distal ends associated with wheels and proximal ends articulated to the seat at corresponding leg attachment area. Both legs are rotatable relative to each other and to the seat between a storage position to be taken in a safety car seat mode of the seat, and an operational position to be taken in a rolling-carrier mode of the seat. The legs can further have an intermediate position between the storage and operational position, and can be rotatable between the intermediate position and the operational position, at least partially under the influence of gravity force.

Abstract: The invention relates to a seat attachment for a stroller, single stroller and double strollers. Such a seat attachment may be used to reversibly convert a single stroller into a double stroller. More specifically, versions of the seat attachment relate to a seat attachment for a stroller capable of supporting a seat such as, but not limited to, a stroller seat, a baby seat, bassinet, a pram, a car seat, or a baby carrier, for example. The seat may be supported in front of a permanent seat of the stroller.

Abstract: A juvenile stroller includes a mobile base and a juvenile seat mounted on the mobile base. The mobile base includes wheels and a foldable frame carrying the juvenile seat.

Abstract: The present disclosure generally pertains to articles of luggage that are integrated with child seats so that children may sit on the luggage articles during transport. In one exemplary embodiment, an article of luggage, such as a suitcase, has a retractable seat and a plurality of wheels. The retractable seat resides within a cavity in the luggage article when positioned in a retracted position. A user can pull the retractable seat from the cavity to position a seat back in an extended position. While in the extended position, a child can sit on the article of luggage and lean back against a back of the seat. The back of the seat or other component of the article of luggage can be pulled or pushed such that at least one wheel of the article of luggage rolls on a surface in order to move the article from one location to another.

Abstract: A child carrier in accordance with the present disclosure is adapted to be mounted on a rolling stroller frame to hold a child for transport on the rolling stroller frame. In one mode, the child carrier is configured to provide a bassinet. In another mode, the child carrier is configured to provide a seat.

Abstract: A latch device is adapted for coupling a detachably a carrier to a stroller frame, and includes a latch tongue, a latch housing, and a locking member. The latch tongue is mounted on the stroller frame, and has a cam surface and an abutment surface. The latch housing is connected to the latch tongue and is coupled detachably to the carrier. The locking member is connected to the latch housing and includes a latch arm. The locking member is movable relative to the latch housing between a locked position, where the latch tongue is locked to the locking member, and an unlocked position, where the latch tongue is unlocked from the locking member and a slide block of the latch arm abuts against the abutment surface so as to maintain the locking member at the unlocked position. The slide block slides along the cam surface when the locking member is moved toward the unlocked position.

Abstract: A stroller includes a stroller frame having a mounting frame portion, a support frame connected pivotally to the mounting frame portion for supporting a seat, and a support-frame adjusting device operable to adjust an angle between the support frame and the mounting frame portion. The support-frame adjusting device includes an elongated supporting member disposed pivotally on one of the support frame and the mounting frame portion and having first and second engagement portions, and a positioning member locked releaseably at a selected one of the first and second engagement portions. When released from the selected one of the first and second engagement portions, the positioning member is movable to engage the other one of the first and second engagement portions to thereby change the angle between the supporting member and the mounting frame portion and, thus, the inclination angle of the seat.

Abstract: A vehicle includes a body including an operation deck and an upper surface which is higher than a bottom surface of the operation deck. An operation control is provided at a front area of the operation deck to project higher than the upper surface of the body. A protective frame is provided on the body to project higher than the upper surface of the body above the operation deck. The upper surface of the body includes a front portion, a side portion, and a rear portion, and is flat along the side portion and at least one of the front and rear portions. The operation control is arranged to be folded for stowing in the operation deck. The protective frame is arranged to be removed, or at least a portion of the protective frame is arranged to be folded for stowing in the operation deck.

Abstract: Sit or stand strollers and methods of using and making the same are described herein. An example stroller includes a frame and a seat having a seat pan. The seat pan is pivotable between a raised position and a lowered position. In the lowered position, the seat pan is to support a child in a seated position. The example stroller also includes a foot platform coupled to the frame to support a child in a standing position.

Abstract: A stroller includes two side frames and a first seat disposed between the side frames. Each side frame includes an armrest, a first leg, a second leg, a handle, and a first link. The first leg and the second leg are pivoted to the armrest, respectively. The handle is pivoted to the armrest, and a bottom end of the handle is detachably engaged with the first leg. A front end of the first link is pivoted to the second leg, and another opposite end is pivoted to the handle. The first seat is movably disposed on the first link. Thus, when the handle rotates between an extended position and a folded position, the first link can bring the first seat and the second leg to rotate relative to the armrest.

Abstract: An infant carrier apparatus comprises a support frame, a handle assembly having two side segments, two handle adjusting mechanisms pivotally connecting the two side segments of the handle assembly with the support frame, a release actuator and two transmission elements. Each of the handle adjusting mechanisms has a locked state for securely holding the handle assembly in place relative to the support frame, and an unlocked state allowing rotation of the handle assembly about a pivot axis relative to the support frame. Each of the transmission elements has a first and second distal end, wherein the first distal end is connected with one of the handle adjusting mechanisms, and the second distal end is connected with the release actuator. The release actuator is operable to switch the handle adjusting mechanisms from the locked state to the unlocked state.

Abstract: This application discloses a number of fold flat, collapsible, stowable wheel assemblies for wheeled carriers including but not limited to strollers, jogging strollers, flat carts, dollies, trolleys, wagons and carts. The application discloses novel methods to selectively fixate the wheel/tire position, to stow and fold flat, fixed, swivel and caster wheels so that the wheels/tires fold flat and generally parallel with the floor/base/frame of the device providing for a thin stowed profile. Also, one innovation provides for a flat cart and all wheels fold flat to the underside and side elevational profile of the carrier device. Other innovations relate to methods to manufacture and provide for fold flat caster or swivel wheels. One embodiment provides for a baby jogging stroller forward wheel/tire that is a selectively fixed, or becomes a swivel wheel, which quickly and easily may be folded flat along the jogger frame, without removing the wheel.

Abstract: A baby safety car seat convertible into a rollable baby seat, and comprising a front, head area and a rear, feet area, the head area being higher than the feet area; a right and left pair of front and rear legs, and a handle. The legs of each pair have distal ends associated with wheels and proximal ends articulated to the seat at corresponding leg attachment area. Both legs are rotatable relative to each other and to the seat between a storage position to be taken in a safety car seat mode of the seat, and an operational position to be taken in a rolling-carrier mode of the seat. The legs can have an intermediate position between the storage and operational position, and can be rotatable between the intermediate and operational positions, at least partially under the influence of gravity force.

Abstract: A baby safety car seat convertible into a rollable baby seat, and comprising a front, head area and a rear, feet area, the head area being higher than the feet area; a right and left pair of front and rear legs, and a handle. The legs of each pair have distal ends associated with wheels and proximal ends articulated to the seat at corresponding leg attachment area. Both legs are rotatable relative to each other and to the seat between a storage position to be taken in a safety car seat mode of the seat, and an operational position to be taken in a rolling-carrier mode of the seat. The legs can have an intermediate position between the storage and operational position, and can be rotatable between the intermediate and operational positions, at least partially under the influence of gravity force.

Abstract: A baby safety car seat convertible into a rollable baby seat, and comprising a front, head area and a rear, feet area, the head area being higher than the feet area; a right and left pair of front and rear legs, and a handle. The legs of each pair have distal ends associated with wheels and proximal ends articulated to the seat at corresponding leg attachment area. Both legs are rotatable relative to each other and to the seat between a storage position to be taken in a safety car seat mode of the seat, and an operational position to be taken in a rolling-carrier mode of the seat. The legs can have an intermediate position between the storage and operational position, and can be rotatable between the intermediate and operational positions, at least partially under the influence of gravity force.

Abstract: A stroller is adapted to be connected with a car seat, and includes a frame, a footrest, and at least one locking device. The frame has two seat rods. The footrest is disposed between the seat rods, and includes two side rod sections and a middle rod section having two ends connected respectively and pivotally to the side rod sections. The locking device is disposed between one of the side rod sections and a corresponding one of the seat rods, and includes an angle-limiting mechanism and an actuator operable to cooperate with the angle-limiting mechanism so as to adjust the footrest among a plurality of angular positions including an erected position whereat the stroller is connectable with the car seat.

Abstract: A stroller having an articulated frame with at least one front leg, at least one rear leg, and a reclinable seatback support. An adjustment member is fixed to the frame and defines a plurality of detents that correspond to selectable recline positions for the reclinable seatback support. A locking member is movably attached to the reclinable seatback support and removably engages one of the plurality of detents. An actuator handle is connected to the locking member and is movably mounted on a handle guide that is fixed to the seatback support. The actuator handle is slidable along the handle guide to a first position to move the locking member away from one of the plurality of detents and slidable along the handle guide to a second position to move the locking member into engagement with one of the plurality of detents.

Abstract: A pushchair seat (10) comprising a seat back (18) mounted for pivotable movement relative to a seat base (20). A bumper bar (14) is pivotably coupled to and carried by the seat (10) and is moveable between a stowed position generally adjacent to the seat base (20) and a deployed position spaced from the seat back (18) and the seat base (20). Drive mechanisms (16) are provided at each end of the bumper bar (14) and comprise a selectively engageable coupling mechanism in the form of a clutch mechanism (30, 32) and a control mechanism (34, 56, 58). The coupling mechanism couples movement of the seat back (18) between its stowed position and its operating position into a corresponding movement of the bumper bar (14) between its stowed position and its deployed position.

Abstract: A direction changeable stroller comprises a frame unit that includes a side leg frame and a push handle pivotable between front and rear positions. The side leg frame includes front and rear leg tubes, and front and rear wheel assemblies. Each of the front and rear wheel assemblies includes a wheel seat and a wheel. Each of the wheel seats includes a fixed portion connected fixedly to a corresponding one of the front and rear leg tubes, and a rotating portion connected pivotably to the fixed portion. The side leg frame further includes an automatic direction-limiting mechanism connected to the push handle such that, when the push handle is at a selected one of the front and rear positions, relative rotation between the fixed portion and the rotating portion of a corresponding one of the front and rear wheel seats is prevented.

Abstract: The dual-chair beach wagon is a rolling cart that can be converted into separately usable beach chairs after a user has finished transporting items with the beach wagon. The cart comprises opposing beach chairs designed with wheels. Beach chairs are removably connected together at opposing ends to form a wagon. When disconnected each chair serves as a standard beach chair. The beach chairs include reconfigurable legs equipped with retractable wheels. In preparation for beach wagon mode, the front legs can be folded up into a recessed locked position to facilitate attachment of the two chairs to form the beach wagon. A rotatable platform joins the axle of one of the chairs to facilitate wagon transport.

Abstract: A baby safety car seat convertible into a rollable baby seat, and comprising a front, head area and a rear, feet area, the head area being higher than the feet area; a right and left pair of front and rear legs, and a handle. The legs of each pair have distal ends associated with wheels and proximal ends articulated to the seat at corresponding leg attachment area. Both legs are rotatable relative to each other and to the seat between a storage position to be taken in a safety car seat mode of the seat, and an operational position to be taken in a rolling-carrier mode of the seat. The legs can have an intermediate position between the storage and operational position, and can be rotatable between the intermediate and operational positions, at least partially under the influence of gravity force.