Abstract: A stand-up stroller assembly for rolling a standing child includes a first plate and a second plate. The second plate is coupled to and extends substantially perpendicularly from a rear edge of the first plate. A seat is hingedly coupled to a first side of the second plate. A first handle is coupled proximate to a front edge of the first plate and is configured to be grasped in hands of the user, such as a child, who is positioned on the first plate between the first handle and the second plate. A second handle is coupled to a second side, proximate to a top edge, of the second plate and is configured to be clasped in hands of an operator so that the operator is positioned to locomote the first plate, and the user, upon wheels that are axially coupled to the first plate.

Abstract: A stroller frame having forwardly extending right and left side front supports, rearwardly extending right and left side rear supports, and upwardly extending right and left side handle supports moveable connected to permit movement of the frame between deployed and collapsed orientations, and a folding seat frame connected to the front and rear supports having right and left side fold mechanisms which are configured to lock the frame in the deployed or collapsed configurations and to selectively bias frame members toward movement towards the deployed or collapsed configurations based on frame orientation and operation of a release handle.

Abstract: A connection mechanism is used for detachably installing a carrier device to a supporting device. The connection mechanism includes a first base, fixed on the supporting device, a second base, fixed on the carrier device and detachably connected to the first base, a latch, movably disposed on the second base and corresponding to the first base, and an operating component, disposed on the second base and operably connected to the latch. The operating component selectively drives the latch to move to a locking position so that the second base is locked to the first base, or drives the latch to move to an unlocking position so that the second base is unlocked from the first base.

Abstract: This patent utilizes magnetic technology and a sliding lock mechanism to securely fasten a light to a stroller and to also remove this light from the stroller. The first magnetic base will fasten to the stroller using an adherent. The second part of the system is attached to the light. This portion will contain grooves and a connecting magnet that will slide into the base, securely attaching the light to the stroller, or another object.

Abstract: A collapsible stroller includes a stroller frame moveable between a deployed position and a collapsed position and a latch mechanism. The stroller frame includes a first leg, a second leg and a handle support member. The handle support member is pivotable with respect to the first leg or the second leg. The latch mechanism includes a latch body and a catch. The latch body is positioned internally of the second leg. When the stroller is in the deployed position, the latch body is blocked from view by the second leg when the stroller frame is viewed in a side elevation view. The catch is provided on or connected with the first leg or the handle support member. The latch body cooperates with the catch to selectively connect the latch body with the catch when the stroller is in the collapsed position.

Abstract: Embodiments of video inspection systems with moveably dockable CCUs are disclosed. In one embodiment a video inspection system includes a frame element, a camera control unit (CCU), and a docking apparatus mechanically coupled to the frame element and/or the CCU so as to allow the CCU to rotate relative to the frame, about a rotational axis, responsive to a user action.

Abstract: Strollers are described that may be used as single strollers or may be reversibly connected together to form a double stroller. Strollers may comprise complementary connectors to be reversibly connected two single strollers in a side-by-side configuration with the rear wheels of the single strollers are interlocked to reduce the overall width of the double stroller. Further, single strollers may comprise complementary connectors to be reversibly connoted two single strollers in a train configuration with the front wheels of the single strollers interlocked to reduce the overall length of the double stroller. Additionally, single strollers may be produced with sets of connectors such that they may connected in either the side-by-side configuration or the train configuration.

Abstract: A stroller assembly is provided that includes a frame. The stroller assembly may also include a plurality of wheel assemblies that are operable to mount to the frame. In addition, the stroller assembly may include a front seat module and a back seat module comprised of a plastic material. The front seat module and the back seat module may include integral fastener members that are operative to engage with each other when the front seat module and the back seat module are mounted to the frame.

Abstract: A vehicle seat assembly includes a seat member, a back member, and a base having a track and a guide with horizontal and vertical portions. The seat member is connected to the base by scissors linkage engaging the track to provide vertical and rearward translation of the seat member between use and stowed positions. The back member has a lower portion engaging the guide and providing horizontal and vertical translation of the lower portion of the back member, and rotation of the back member between upright and stowed positions.

Abstract: A riding board apparatus configured to be mounted to a stroller is provided. The riding board apparatus includes a platform, at least one mounting arm extending from the platform, and a seat mounted onto the platform and is configured to be convertible between a sitting configuration and a stowable configuration.

Abstract: Maneuverable strollers are disclosed herein. An example stroller disclosed herein includes a frame having a front wheel and rear wheel to support the frame. An intermediate wheel is positioned between the front wheel and the rear wheel. The example stroller includes a support having a first end and a second end, where the first end supports the intermediate wheel and the second end supports the rear wheel. The support to pivotally couple the intermediate wheel and the rear wheel to the frame, the support defining a pivot axis positioned between the intermediate wheel and the rear wheel when the support is pivotally coupled to the frame.

Abstract: A buggy for transporting children has a frame (3a, 3b, 5) and wheels (9) that are rotatably mounted relative to the frame to support the frame above a ground surface. A primary seat (8) is operatively supported by the frame for supporting a first child. A secondary seat (17) is operatively supported by the frame for supporting a second child. The buggy is convertible between an in use configuration for transporting children and a folded storage configuration, whether or not the secondary seat is attached. The secondary seat may be detachable. The secondary seat may be positioned at least partly behind and at least partly below the primary seat.

Abstract: A braking mechanism operably engaging at least one wheel where the mechanism is capable of transitioning the at least one wheel between unlocked and locked states is provided. The braking mechanism includes a flipper and a cam. The flipper is adapted to move in X, Y and Z-directions and includes a discontinuous track having an open slot portion and a surface path portion. The open slot portion includes a home position and an engaged position. The cam includes a pin which cooperatively moves along the discontinuous track. When the at least one wheel is in an unlocked state, the pin is in the home position and when the at least one wheel is in a locked state, the pin is in the engaged position.

Abstract: A locking device for baby strollers is described which is automatically engaged and disengaged based simply on the presence or absence of a human hand on the stroller handle. If there is no hand on the stroller, the lock is automatically engaged, and if a hand is present on the handle, the lock is automatically disengaged.

Abstract: A child-restraining safety seat assembly includes a safety seat with a body defining a secured seating area sized to securely hold a child or smaller-than-average adult human and a fixed-shape rotatable restraining member mechanically coupled to the body and having an open position where the seating area is unobstructed and a closed position where the seating area is obstructed by the restraining member. The body can include a back support member and a seat member, each with an inner surface portion at least partially defining the secured seating area. The restraining member can further include an upper body restraining member disposed in an overlapping configuration with the inner surface portion of the back support member.

Abstract: A portable child-carrying shopping cart having a collapsible cart basket. The cart has a seat for two small children and seat belts for keeping children safely seated side-by-side. An extendable snack tray provides children with access to their own snacks and beverages, so that a parent does not have to maintain constant control of these items. Below the seat is an interior cavity with a coat hook and a space for storing bags, purses, and garments. On the opposing side of the body of the device, a cart basket is secured. The cart basket is expandable and collapsible. The device can be easily stowed when the basket is collapsed against the body. It can also be quickly expanded for use as a shopping cart when a parent is running errands.

Abstract: A reciprocating infant stroller assembly for automatically producing a reciprocating forward and backward rocking motion on an infant stroller is disclosed. The reciprocating infant stroller assembly includes a battery-powered motor having a linkage which is connects to an infant stroller wheel to induce a reciprocating motion. The reciprocating infant stroller assembly further includes a power switch and a speed control for controlling the frequency of motion.

Abstract: A frame for a baby carriage includes two side supporting members, a handling member, a traverse connecting member and a central supporting member. The handling member has opposite ends connected to the two side supporting members, respectively. The traverse connecting member has opposite ends connected to the two side supporting members, respectively and spaced apart from the handling member. The central supporting member is arranged between the two side supporting members so as to form two side-by-side seat areas and terminating at the traverse connecting member so as to form a T-shaped structure.

Abstract: A foldable structure for baby strollers is revealed. The foldable structure includes two joints at each side thereof. A push rod, a front support with a sliding member and a rear support are pivotally connected to each joint. The sliding member is linked to the push rod and the rear support by an upper link and a lower link respectively. A quadrilateral linkage is arranged between the two front supports while a seat is pivotally connected to and located above the quadrilateral linkage. The quadrilateral linkage is linked to front wheel sets and the sliding members. Thereby the quadrilateral linkage is driven to move through the upper and the lower links and the sliding members when the joint is released from a locked state and the push rod is pushed forward. The front wheel sets are also folded. Thus the baby stroller is folded into a compact size.

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: A stroller frame with an automatic brake mechanism actuatable by hand detecting includes at least a first rear wheel, a first locking mechanism, a second rear wheel, a second locking mechanism, a battery and a hand-detecting handle. The hand-detecting handle is capable of detecting the caregiver's hand by a change of capacitance on its surface, generating a first control signal to a power supply circuit when the caregiver's hand is near, and generating a second control signal to the power supply circuit when the caregiver's hand is absent. The power supply circuit may provide currents in different direction to the first locking mechanism and the second locking mechanism according to the first control signal and the second control signal, so as to lock the rear wheels once the caregiver's hand has left the hand-detecting handle, and unlock the rear wheels when the caregiver's hand near the hand-detecting handle automatically.

Abstract: The utility model provides a baby stroller capable of be folded with one hand, which comprises a comprise a joint seat, an upper joint, a lower joint, an annular pressing block, a lock device being used in the lower joint and the upper joint to avoid rotating among the lower joint, a folding device being used to control the lock device for locking or releasing the upper joint and the lower joint, wherein the folding device comprises a connecting seat, a lever, a wire and a lifting belt; the connecting seat is provided with first release components to control and lock the lever in case of movement. The present invention can fold the baby stroller by one hand, and the operation is very convenient, flexible, and effortless.

Abstract: A device holder for a stroller permits storage and use of a touch-screen electronic device by a child in the stroller. The device holder is for securing an electronic device between handlebars of the stroller. The stroller includes a user storage compartment with a concavity for holding a child in the stroller. The stroller is rear-facing such that when the child is positioned in the concavity, the child faces a direction of the handlebars. A main body surface of the device holder forms a plane extending between the handlebars of the stroller filling a void otherwise existent between the handlebars. The main body surface includes an area for securely attaching an electronic device to the main body surface to position the electronic device between the handlebars of the stroller. A positioned electronic device comprises a screen for visibly presenting media to the child positioned in the concavity.

Abstract: A smart stroller includes at least one armrest, a processor, a flexible touch sensor, an acceleration sensor, and an automatic brake unit. The flexible touch sensor detects whether the at least one armrest is grasping by a person; if no, the processor controls the acceleration sensor to detect whether the smart stroller is moving. If the processor determines that the armrest is not grasped by the person and the smart stroller is moving, the processor control the at least one automatic brake unit to block the smart strolling to stop the smart stroller from moving.

Abstract: The present invention relates to an exercise stroller. The handles of the stroller are pivotally attached to the stroller frame and can be moved in an alternating forward and backward direction. Each of the stroller handles includes a tension device, such as, for example, elastic members, a hydraulic cylinder, various types of springs, etc., to provide resistance to the movement of the handles. In an embodiment, each handle includes a pair of torsion springs, wherein one of the torsion springs is left wound and the other of the pair of torsion springs is right wound. In this configuration, each pair of torsion springs is enclosed in a plastic housing, one of the torsion springs disposed on a left side and the other torsion spring disposed on a right side, wherein a fastener extends through central portions of the spring and secures the pair of the torsion springs to the handle.

Abstract: A stroller includes a frame and a plurality of hubless wheels. A seat is disposed on the frame. The hubless wheels are disposed on the frame. The hubless wheel includes a rim, an internal sliding structure and at least one bridging component. A tire is disposed on the hubless wheel. The rim has an external sliding structure on an inner surface of the rim. The internal sliding structure is disposed inside the external sliding structure. The bridging component is disposed between the external sliding structure and the internal sliding structure. The bridging component revolves on its own axis.

Abstract: A brake system for a medical device, such as a cot, stretcher, bed, wheeled chair, or other medical device, includes a pin and toothed wheel arrangement wherein the selective insertion of a pin between teeth on the toothed wheel brakes the system, while the removal of the pin from between the teeth unbrakes the system. Multiple pins may be used with a single toothed wheel wherein the pins are offset from each other relative to the teeth so that, when one pin is inserted between teeth, the other pin is at least partially blocked from being inserted between the teeth. This effectively increases the resolution of the toothed wheel. The toothed wheel may be axially spaced from wheel(s) that roll on the ground. When so spaced, the toothed wheel, and all of the braking components associated therewith, may be enclosed within a housing separate from the rolling wheel(s).

Abstract: An infant wagon includes a body having a seating surface. A number of wheels and a handle are attached to the body. A seatback is pivotally attached to the body adjacent to the seating surface. The seatback may be pivoted between a folded position where the seating surface is covered, an upright position and a reclined position. An infant seat is removably attached to the seatback when in the reclined position.

Abstract: A stroller for assembling with an infant safety seat having a first engaging portion. The stroller includes a second engaging portion and a covering component. The second engaging portion is for engaging with the first engaging portion; the covering component includes a first portion and a second portion. The first portion is for covering the second engaging portion. The second portion is surrounding the first portion, and the first portion is clamped between the first engaging portion and the second engaging portion the infant safety seat is assembled with the stroller via the first engaging portion being engaged with the second engaging portion. It is not needed to form an opening on the covering component to implement engagement between the stroller and the infant safety seat, so as to solve a problem of fingers of an infant on the stroller being clipped by the opening.

Abstract: A stroller may include a frame and at least two adapters. An infant seat may be selectively engaged with the stroller. The frame may have a first side and a second side that generally oppose one another. The adapters may each be configured to selectively engage with the infant seat. One of the adapters may be positioned on the first side of the frame, and a remaining adapter may be positioned on the second side of the frame. The adapters may be rotatable between a first position and a second position. The adapters may be visible and positioned to engage with the infant seat in the first position, and may be substantially hidden from view in the second position.

Abstract: A collapsible infant carrier apparatus comprises a support frame including front and rear leg frames and a handle, and a linkage frame pivotally connected with the front leg frame and the handle. A first latch mechanism is connected between the handle and the linkage frame, wherein the first latch mechanism is operable to lock the handle in position relative to the linkage frame. A second latch mechanism is connected between the linkage frame and the front leg frame and having a locked state and an unlocked state, wherein the second latch mechanism when in the locked state locks the linkage frame with the front leg frame, and the second latch mechanism when in the unlocked state enables rotation of the linkage frame relative to the front leg frame. The infant carrier apparatus can be collapsed by rotating the linkage frame.

Abstract: A stroller is provided which includes a right frame and a left frame. Each frame has a front support rotatably connected to a rear support at a frame joint. The front support of each frame is a telescoping tube assembly. The stroller further includes a linkage comprising at least two substantially rigid members connected between the right frame and the left frame, the rigid members being connected to the front supports at a right slideable joint and a left slidable joint. The joints are received within the slot of the outer tube. A drive mechanism coupled to the right or left frame is also provided. The front support and the rear support of the right frame and the left frame are movable from an open position to a closed position by the drive mechanism.

Abstract: A child carrier apparatus can comprise a base frame having a tube segment that is affixed with an attachment fixture, and a detachable seat including a tubular support, and a coupling element mounted at a side segment of the tubular support. The inclination of the tubular support is adjustable relative to the coupling element, and the coupling element is configured to detachably locked with the attachment fixture via a latch to hold the seat with the base frame.

Abstract: A stroller device comprising at least one carriage, the carriage comprising a support unit for supporting at least one person, typically an infant, a wheels assembly coupled to the support unit, an engagement element for engaging the carriage to another such carriage and a pivoting element coupled to the support unit allowing rotating the support unit with respect to the carriage. The support unit may be rotatably reoriented so as to allow transporting the stroller device such that the support unit of the carriage and the other support unit of the other carriage can be aligned in a train state or alternatively in a side-by-side state.

Abstract: A baby stroller for transporting a child is disclosed. This baby stroller has a folding mechanism to facilitate folding for easier stowing and transporting. The folding mechanism, a unique feature of the design is directed toward compactness, ease of use, reliability, and reduction in manufacturing costs.

Abstract: A stroller frame with an automatic brake mechanism actuatable by hand detecting includes at least a first rear wheel, a first locking mechanism, a second rear wheel, a second locking mechanism, a battery and a hand-detecting handle. The hand-detecting handle is capable of detecting the caregiver's hand by a change of capacitance on its surface, generating a first control signal to a power supply circuit when the caregiver's hand is near, and generating a second control signal to the power supply circuit when the caregiver's hand is absent. The power supply circuit may provide currents in different direction to the first locking mechanism and the second locking mechanism according to the first control signal and the second control signal, so as to lock the rear wheels once the caregiver's hand has left the hand-detecting handle, and unlock the rear wheels when the caregiver's hand near the hand-detecting handle automatically.

Abstract: A stroller includes an outer frame unit, two support units connected with the outer frame unit, two linking units connected with the outer frame unit and the support units, a cross connection unit mounted between the support units and the linking units, and a positioning and folding unit mounted between the support units. Thus, the positioning and folding unit is operated to expand and collapse the stroller.

Abstract: Car seat carriers are disclosed. An example child car seat carrier includes a frame and a clamp to hold a child car seat to the frame. The clamp includes a ratcheting joint to prevent movement of the clamp toward a released position while enabling movement of the clamp toward a locked position. The example child car seat carrier further includes a manual actuator to selectively release the clamp to move toward the open position.

Abstract: A child stroller apparatus includes first and second leg frames, a handle and a latch element. The first leg frame includes a first side segment affixed with a first coupling element. The second leg frame includes a second side segment affixed with a second coupling element that is pivotally connected with the first coupling element about a first pivot axis. The handle includes a third side segment affixed with a third coupling element that is pivotally connected with the first coupling element about a second pivot axis. The latch element is operable to move between a locked position where the latch element locks the first, second and third coupling elements together to hold the handle and the first and second leg frames in a deployed state, and an unlocked position to allow relative rotations between the handle and the first and second leg frames to collapse the stroller apparatus.

Abstract: A stroller includes a stroller frame, a front seat assembly, and a rear seat assembly. The stroller frame includes two side support assembly disposed oppositely. A front seat space and a rear seat space are formed between the two side support assemblies. The rear seat assembly is detachably and height-adjustably disposed between the two side support assemblies and located in the rear seat space, for performing a function of adjusting a sitting height of a child sitting on the rear seat assembly. The stroller can include an accommodating basket under the front seat assembly. When the rear seat assembly is moved relative to the stroller frame, an expansible side portion of the accommodating basket can spread upward to expand the accommodating space of the accommodating basket.

Abstract: An infant transport apparatus includes a Bucket assembly, an Insert assembly, and a Ring assembly (i.e. a BIR arrangement). The bucket assembly includes a bucket construction and a handle assembly. The bucket construction includes two bucket-based, leg-receiving apertures adjacent the bucket bottom. The inner bucket surface defines a volumetric space for receiving an infant. The insert assembly includes a liner assembly and a harness assembly. The liner assembly is sized and shaped to fit the inner bucket surface. The harness assembly is removably attached to the bucket assembly and donnable by the infant. The ring assembly includes an upper ring assembly. The bucket assembly is received and supported by the upper ring assembly such that the bucket-based and certain mesh-based leg-receiving apertures of the upper ring assembly are aligned. The bucket assembly is selectively removable from the mesh sack for transporting the infant.

Abstract: A detachable tipping support device used to prevent strollers from tipping over because of a disproportionate rear weight is disclosed. The support device comprises a telescoping kickstand shaft and a detented, spring biased stroller connection means. The kickstand shaft comprises a movable grip housing an internal spring biased mechanism that locks the shaft into either a deployed or stored state. A high friction base at the kickstand shaft is used to stabilize the device against a surface and prevents sliding along a support surface when supporting the weight of a tipping stroller. The stroller connection means comprises a clamp having a first and second clamp member. The clamp members envelope a rear post of a stroller and are drawn together via fasteners to secure to the post. The kickstand shaft is then pivotable mounted to the clamp members and secured into a given position by the spring biased mechanism.

Abstract: A buggy for transporting children has a frame (3a, 3b, 5) and wheels (9) that are rotatably mounted relative to the frame to support the frame above a ground surface. A primary seat (8) is operatively supported by the frame for supporting a first child. A secondary seat (17) is operatively supported by the frame for supporting a second child. The buggy is convertible between an in use configuration for transporting children and a folded storage configuration, whether or not the secondary seat is attached. The secondary seat may be detachable. The secondary seat may be positioned at least partly behind and at least partly below the primary seat.

Abstract: A medical chair comprising a base having one wheel having a brake; and a manual braking mechanism for selectively actuating the brake at the wheel; and a control system operable to control the brake in response to a signal or lack of signal at the chair. Further, the control system includes an actuator, which is coupled to the manual braking mechanism to move the manual braking mechanism to a braking or unbraking position. For example, the actuator may comprise a solenoid, the solenoid being coupled to the manual braking mechanism.

Abstract: An infant transport apparatus includes a Bucket assembly, an Insert assembly, and a Ring assembly (i.e. a BIR arrangement). The bucket assembly includes a bucket construction and a handle assembly. The bucket construction includes two bucket-based, leg-receiving apertures adjacent the bucket bottom. The inner bucket surface defines a volumetric space for receiving an infant. The insert assembly includes a liner assembly and a harness assembly. The liner assembly is sized and shaped to fit the inner bucket surface. The harness assembly is removably attached to the bucket assembly and donnable by the infant. The ring assembly includes an upper ring assembly. The bucket assembly is received and supported by the upper ring assembly such that the bucket-based and certain mesh-based leg-receiving apertures of the upper ring assembly are aligned. The bucket assembly is selectively removable from the mesh sack for transporting the infant.

Abstract: A mounting system includes at least one mounting fixture affixed on a stroller frame, and a connector affixed on a child support accessory. The connector can be inserted into the mounting fixture for locking the child support accessory in position on the stroller frame. The connector can lock with the mounting fixture in either of a rearward or forward facing configuration of the child support accessory. The construction of the stroller frame is such that it can be conveniently collapsed with the child support accessory installed thereon. Examples of the child support accessory can include a stroller seat module, a support adapter for carrycot or bassinet, and the like.

Abstract: Aspects of the present invention involve a steerable running stroller including a lower frame assembly supporting two rear wheels and an upper frame assembly supporting a front wheel. A self centering hinge mechanism, which may define a physical pivot axis or a virtual pivot axis, is coupled between the lower frame assembly and the upper frame assembly. The pivot axis defined by the self centering hinge mechanism is positioned at an angle, which may be an obtuse angle, such that the front wheel is normally in a straight orientation with respect to the rear wheels, and when a user imparts a turning force, the front wheel both turns and tilts relative to the rear wheels. When the turning force is removed, the self centering hinge mechanism acts to return the running stroller to a straight rolling orientation.

Abstract: Because sidewalks are slanted for rain run-off, they pose a safety risk for baby strollers if the person pushing the stroller stops and doesn't apply the brake. If s/he releases the stroller's handle when the brake is not applied, the stroller may veer off towards the curb owing to gravity, wind, the baby's movements, traffic vibrations, etc. Not applying the brake when stopped is a common mistake. While parents may remember to apply the brake when stopped, other caregivers may not. Applicant's improvement provides fully automatic slip-clutch joining means to inhibit veering off by automatically coupling the stroller's rear wheels together when the stroller is stopped. When coupled, the rear wheels must rotate in unison thus helping to prevent the stroller from veering-off toward the curb. When the stroller is being pushed the slip clutch handily becomes disengaged by turning or making other course adjustments.

Abstract: A wheelchair comprising a frame, a seat assembly attached to the frame, two rear wheels attached to the frame, and at least one front wheel assembly attached to the frame. The frame defines a front face and two side faces. The front face is defined by one or more structural elements situated along a front of the frame, while the side faces are defined by two top side members and two corresponding bottom side members. The front face and the two side faces result in three non-orthogonal planes, which contribute to the strength and stiffness of the frame.

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.