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: Maneuverable strollers are disclosed herein. An example stroller disclosed herein includes a frame, front wheels and rear wheels to support the frame, and an intermediate wheel between the front wheels and the rear wheels. The intermediate wheel is to provide a pivot point to turn the stroller. The intermediate wheel has a first diameter, the front and rear wheels have respective second and third diameters, where the first diameter is larger than the second diameter and the first diameter is larger than the third diameter.

Abstract: A tricycle may be operable between a first mode of operation steerable by a tricycle rider, and a second mode of operation steerable by an individual pushing the tricycle. In both such first and second modes, the frame of the tricycle is configured to rotatably support the rear wheels and configured to support the head tube at a distance from the rear wheels such that a distance between the head tube and rear wheels need not necessarily be changed even when the front wheel axis location is changed from one mode to another.

Abstract: A baby carriage includes a frame and a seat mounted onto the frame. The frame includes a support rack and a pair of handle sets coupled on the support rack. The handle sets have respectively an elevation set and a folding set connected through a flexible member. The elevation set can adjust the height of a handgrip located at the upper end of the handle set. The folding set has an elastic pin and is inserted into the support rack. Through a driving member located on the upper end of the handle set, the latching state between elastic pin and the support rack can be released to rapidly fold and retract the frame. Usability is therefore improved and the folded size can also be reduced.

Abstract: A foldable stroller frame includes a seat frame assembly, and a leg tube assembly including a front leg tube, a rear leg tube, and a pivot joint connected between the front and rear leg tubes and connected pivotally to the seat frame assembly. A link is connected pivotally to a handle tube at one end thereof and to the pivot joint at the other end. Two supporting tubes are connected respectively to the seat frame assembly and the leg tube assembly. A drive member is connected among the rear leg tube, the handle tube, and the supporting tubes, in such a manner to allow for rotation of the handle tube relative to the drive member. When said handle tube is rotated relative to said drive member, said drive member is activated to result in rotation of said seat frame and leg tube assembly, and said stroller frame is converted between unfolded and fully folded states.

Abstract: An oxygen, or other type of, bottle holder is attached to a medical device and includes an upper portion and a lower portion. The lower portion includes a cylindrical recess into which the bottom of the bottle is inserted. The upper portion includes a clamp that may include either a movable arm or movable fingers. The movable fingers pivot about a common pivot axis and are retractable into, and extendable out of, a housing. The movable arm includes different sections with different levels of curvature. A trigger may be included that automatically opens the clamp upon the insertion of the bottle therein, as well as automatic closing of the clamp thereafter, thereby relieving the user from having to manually manipulate the clamp for it to secure the upper end of the bottle. The device may be wheeled chair, cot, stretcher, bed, or other device that holds an oxygen bottle.

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: A safety walker includes a pair of side members, arms and spring loaded pins engaging the arms so as to allow movement of the side members between an operative position, wherein the side members are disposed in a spaced apart generally parallel relationship with each other and a generally folded position, wherein the side members are generally juxtaposed in a generally planar relationship with and in close proximity to each other. There is also a seat that is configured for movement between a stored position wherein the seat is disposed generally parallel to a rear leg of one of the pair of the side members and a second position wherein the seat is disposed generally horizontally across a space between rear legs of the pair of the side members. The safety walker is also configured for supporting various medical devices often connected to the user.

Abstract: A wheeled chair for transporting patients includes a frame, a seat, a plurality of wheels, and a plurality of armrests. The armrests are pivotable about a common pivot axis that is oriented generally horizontally and that is positioned underneath the seat and forward of a back support. Each armrest may include a locking mechanism for holding the armrests in a use position. When locked in the use position, a user may apply an upward force on the armrests to lift the chair upwardly that does not cause pivoting of the armrests. The chair is designed to allow nesting with other chairs of similar design. The front wheels may be positioned laterally apart a greater distance than the rear wheels to allow a first chair to nestingly receive a rear portion of a second chair. Foley hooks may also be included on the chair for hanging a Foley catheter bag.

Abstract: A storage latch mechanism (160) is disclosed for a foldable stroller. The stroller has a frame assembly with a chassis (52) and a handle (54). The frame assembly is reconfigurable between an in-use configuration and a folded configuration and the handle (54) is movable between a normal use position and a stowed position relative to the chassis. The storage latch mechanism (160) has first and second storage latch parts carried on the frame assembly and which are latched to one another with the frame assembly in the folded configuration and which are unlatched from one another in the in-use configuration. Movement of the handle (54) to the stowed position frees the storage latch mechanism (160) to latch and movement of the handle from the stowed position to the normal use position unlatches the storage latch mechanism.

Abstract: An attachment structure and a stroller therewith are disclosed. The stroller includes a stroller frame, a tray, and the attachment structure. The attachment structure is used for attaching the tray to the stroller frame includes a first engaging structure and a second engaging structure disposed on the tray and the stroller frame oppositely. The first engaging structure has a first hole; the second engaging structure has a pivot post and a flexible retaining portion formed on the pivot post. The pivot post passes through the first hole. The flexible retaining portion is capable of hooking the first hole for preventing the pivot post from being disengaged from the first hole. Thereby, the operation of attaching the tray to the stroller frame can be simple and time-saved, and the attachment structure still can be strong enough even without additional hardware and steel members.

Abstract: An umbrella assembly for providing cover to a user pushing a stroller or similar device includes a clamp mechanism structured to be coupled to a portion of the stroller and an umbrella portion selectively coupled to the clamp mechanism. The umbrella portion is selectively rotatable relative to the clamp mechanism among a plurality of positions.

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: An infant carrier apparatus comprises a support frame, a handle pivotally coupled with the support frame, and a safety lock. The support frame can include first and second frame portions pivotally coupled each other, whereby the first frame portion can rotate relative to the second frame portion between collapsed and deployed states. The handle can rotate relative to the support frame between two positions of opposite inclinations. The safety lock is assembled between the handle and the first frame portion, and is triggered by a rotational movement of the handle to lock the first and second frame portion. The safety lock is unlocked to allow relative rotation between the first and second frame portion when the handle is in the first position. The safety lock rotationally locks the first and second frame portion when the handle is in the second position.

Abstract: The present invention relates to a device, system, kit or apparatus for use with a child or stroller for detecting the removal of the child or baby form the stroller. The present invention may have a fixed plate secured to the frame of the stroller and a flexible plate in close association with a seat of the stroller. The fixed plate and the flexible plate are attachment to the stroller such that they are substantially parallel to each other. A sensor mounted on the fixed plate is engaged directly or indirectly by bending of the flexible plate due to the weight of the child or baby in the seat of the stroller. When the weight of the baby or child is removed from the seat, the flexible plate disengages the sensor due to the flexible plate being biased to maintain its original shape and an alarm is activated.

Abstract: The present invention discloses a stroller including a frame, at least one first engaging component, an infant seat, and at least one second engaging component. The frame includes a seat tube, and the seat tube includes an engaging stick. The at least one first engaging component is installed on the engaging stick. The infant seat detachably is installed on the seat tube. The least one second engaging component is installed on the infant cat seat for detachably engaging with the at least one first engaging component, so that the infant seat is detachably fixed on the frame.

Abstract: A stroller is connectable with a car seat, and includes a frame, and a stroller seat disposed on the frame. The stroller further includes a pair of opposing connecting rods mounted on the frame for supporting the stroller seat. The stroller seat is convertible between an upright position whereat the stroller seat is substantially vertical and connectable with the car seat, and a horizontal position whereat the stroller seat is substantially horizontal and adapted to be seated. The stroller seat includes a support frame operable to extend beyond and rise above the stroller seat to engage the car seat in the upright position, and operable to be moved to be lower than the stroller seat in the horizontal position.

Abstract: An easy lock and release mechanism for a safety seat retaining on a stroller frame and a base. A front confinement is mounted on the stroller frame, and has a spring-loaded latch retractively protruding from a rear wall of the front confinement for locking the safety seat. The safety seat has two anchoring slots, at least a downward holding slot and two latching elements. The downward holding slot has an orifice formed therein for engaging with the spring-loaded latch. The two anchoring slots may anchor to two transversal bars on the base and be locked by the two latching elements. The release mechanism is mounted on the safety seat, and has a release actuator associated with a pushing element and the two latching elements for pushing the spring-loaded latch away from the orifice and unlock the two latching elements.

Abstract: A baby trailer frame mounting structure includes a bottom frame unit, a top frame unit, a trailer bar, two front wheel holder mounting frame assemblies and two front wheel holders. Each front wheel holder mounting frame assembly includes a base frame block affixed to one sidebar or front bar of the bottom frame unit, and a spring-loaded control member pivotally coupled to the base frame block for locking the associating front wheel holder.

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 rear wheel steering hand cart with an integrated brake system includes a main body (10), a push handle (20), a wheel unit (30) and a wheel seat (50) which includes an upper wheel seat (53), a lower wheel seat (51) and a rotary shaft (52); a wheel stop device (40) is disposed between a real wheel (32) and the wheel seat (50); a clutch device (60) is arranged between the upper wheel seat (53) and the lower wheel seat (51), a control rod (71) of the clutch device (60) is connected to the wheel stop device (40), and the clutch device (60) includes the first clutch element (61) and the second clutch element (63).

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: MULTIFUNCTIONAL LOCOMOTOR APPARATUS, which conjugates the function of making someone move in standing position, and also sitting in only one object, thus providing more comfort, health, and life quality for handicapped and bedridden people the apparatus including three modules, being each a lower module, an intermediate module, and an upper module, basically comprised of a preferably tubular structure with at least three vertical elements that compose a tubular structure, which is supported by a gripping circular base and yet containing several devices coupled to said tubular structure.

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 transporter for an infant comprising first and second means to receive an infant in the transporter, the means moveable between a first, closed orientation unsuitable for receiving an infant, and a second, open orientation for receiving an infant. The transporter further comprises first and second wheels disposed respectively at first and second ends of the transporter, the second wheel movable between a first operative position providing for a first wheel base and a second operative position providing for a second wheel base, wherein the first wheelbase is different from said second wheelbase, and wherein the second means is movable between the first and second orientations responsive to movement of the second wheel between the first and second operative positions.

Abstract: A stroller illumination system includes a stroller frame and a child receiving member that is mounted on the stroller frame. The stroller frame includes a plurality of legs and a handle grip. Each of the legs has at least one of a plurality of wheels rotatably coupled thereto. A light emitting assembly is mounted on the frame. The light emitting assembly emits light when turned on to increase a visibility of the stroller frame.

Abstract: A joint structure having an anti-pinch safety feature comprises a first support element and a second support element, and a joint structure including a coupling socket and an anti-pinch element. The coupling socket is respectively connected with the first and second support element. The anti-pinch element is interposed between the second support element and the coupling socket. The second support element when rotating about a pivot axis relative to the coupling socket forms a pinch region between an edge of the coupling socket and the second support element, and the anti-pinch element can continuously occlude the pinch region when the second support element is rotating. The joint structure can be suitable for use in a support frame of an infant carrier apparatus.

Abstract: A stroller with a braking mechanism that automatically configures itself in a braking position provides protection against the unattended stroller from rolling away. By applying force to a handle, the braking mechanism is released and the stroller is able to be pushed as usual. The handle and braking mechanism are biased in the braking position by a spring located near the rear wheels. The braking mechanism applies sufficient frictional force against the tire of the wheel to prevent the wheel from rolling.

Abstract: A stroller includes a stroller frame having a pair of lateral members, a footrest disposed rotatably between the lateral members and having a coupling portion, and a locking device disposed between the footrest and the lateral members and operable to allow for an adjustment to an angle of the footrest with respect to the lateral members. The locking device includes an angle-limiting mechanism and an actuator operable to allow the footrest to be pivoted relative to the lateral members to a selected one of a first angular position and a second angular position. The angle-limiting mechanism locks the footrest at the selected one of the first and second angular positions when the actuator is released. When the footrest is disposed at the first angular position, the coupling portion of the footrest is engageable with a retaining member of a car seat.

Abstract: An elliptical stroller assembly including a stroller frame assembly with a stroller assembly mounted thereto, first and second wheel assemblies, a propulsion frame assembly and propulsion assembly. The propulsion frame assembly and the propulsion assembly may be in an extended or in a retracted configuration with respect to the stroller frame assembly and the stroller assembly. In the extended configuration, the propulsion assembly propels the stroller frame assembly and the propulsion frame assembly is removably secured to a first fixed mount. In the retracted configuration, the propulsion assembly does not propel the stroller frame assembly. At this position, the propulsion frame assembly is removably secured to a second fixed mount.

Abstract: A stroller includes a main frame, a seat, a wheel set, a tray, and a steer grip. The main frame has a handle bar. The seat is disposed on the main frame for holding an infant. The wheel set is attached to the main frame. The tray is disposed on the main frame corresponding to the handle bar. The steer grip projects from a side of the tray and is separate from the handle bar.

Abstract: A stroller includes a frame, a seat, two retaining mechanisms, and two retaining seats. The frame has a pair of first side portions. The seat has a bottom plate portion, a pair of second side portions, and a backrest portion. The retaining mechanisms are disposed respectively on one pair of the pair of the first side portions and the pair of the second side portions. Each of the retaining mechanisms includes a resilient pressing portion and a retaining hook. The retaining seats are disposed respectively on the other pair of the pair of the first side portions and the pair of the second side portions. Each of the retaining seats has a retaining groove engaging the corresponding retaining hook. The resilient pressing portions can be pressed to remove the retaining hooks from the retaining grooves.

Abstract: A seat supporting assembly (24) for supporting a seat (18), the assembly comprising a base (25) including a substantially elongated guiding rod (58), a seat support (36), a seat support-to-base linking member (56) pivotally coupled to the seat support (36) and sliding on the base guiding rod (58), a substantially elongated tilting member (60) having a guiding groove (66) and being pivotally attached to the seat support (36) and to the base (25). An actuating assembly (44) is coupled to the base (25) and includes a motion transmitting member (68) mounted within the guiding groove (60).

Abstract: A wheelchair includes a frame, a seat, a pair of wheels, and a locking mechanism. The seat is disposed on the frame. The pair of wheels is rotatably supported on the frame. At least one of the pair of wheels includes a removable section that is configured to form a part of an outer circumference of the wheel and to be removable when the wheel is at a predetermined angular position, and a remaining section that is configured to form the outer circumference of the wheel together with the removable section. The locking mechanism is configured to lock the wheel at the predetermined angular position. Under the condition where the wheel is locked, the removable section is separated from the remaining section to facilitate a person to get on and off the seat.

Abstract: A stroller or carseat shade is formed from a fabric having a middle section tapered on two sides. Rod tunnels run from a first taper across the middle section to a second taper. An elastic section is formed to wrap around and cling to an existing canopy on a stroller or car seat. The shade is symmetrical relative to a front to back axis. Fasteners are positioned at a series of overlapping stop positions parallel to the front to back axis.

Abstract: A rollator wheelchair is provided comprising a frame provided with at least two wheels, a first chair section mounted to the frame and a second chair section mounted to the frame, the first chair section comprising a back support and a first seat portion, and the second chair section comprising a second seat portion, wherein the first and second chair sections provide a seating arrangement, wherein the first chair section is detachable and wherein the second chair is arranged such that when the first chair section is detached a free walking space is present between the at least two wheels.

Abstract: A stroller includes laterally spaced apart hubs that interconnect upper, middle and front frame member assemblies of a chassis of the stroller. The hubs are disposed one each along opposite sides of the stroller, and include mounting structures for coupling two or more of the strollers together in a side-by-side fashion. The hubs further include other mounting structures for mounting a seat assembly to the stroller chassis and for supporting both rearward facing and frontward facing orientation of the seat assembly as well as selectable inclination positions. Each of the hubs includes a folding mechanism for supporting folding of the stroller, such as for transport in a vehicle or for storage. Other laterally spaced apart hubs are provided along the upper frame members for providing a second point of attachment between two coupled strollers and for mounting of accessories.

Abstract: The present invention refers to an infant seat (10), in particular to be mounted to a baby carriage in a detachable manner, designed in such a way that it exhibits a seat configuration and coming from said seat configuration is transformable into a carry configuration, in which the infant seat may be used as a carrycot. According to the invention it is provided that the infant seat (10) comprises a separate unit serving as a carrycot (20), which is arranged in the seat configuration beneath an upper shell (12) of the infant seat (10). It is a particular advantage of the invention that the infant seat (10) can be transformed into the carrycot (20) with a small number of hand movements only. Furthermore in the mounted condition of the infant seat which is the seat configuration the carrycot is stored within the infant seat in a space saving manner.

Abstract: A stroller includes laterally spaced apart hubs that interconnect upper, middle and front frame member assemblies of a chassis of the stroller. The hubs are disposed one each along opposite sides of the stroller, and include mounting structures for coupling two or more of the strollers together in a side-by-side fashion. The hubs further include other mounting structures for mounting a seat assembly to the stroller chassis and for supporting both rearward facing and frontward facing orientation of the seat assembly as well as selectable inclination positions. Each of the hubs includes a folding mechanism for supporting folding of the stroller, such as for transport in a vehicle or for storage. Other laterally spaced apart hubs are provided along the upper frame members for providing a second point of attachment between two coupled strollers and for mounting of accessories.

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 is connectable with a car seat, and includes a frame, and a stroller seat disposed on the frame. The stroller further includes a pair of opposing connecting rods mounted on the frame for supporting the stroller seat. The stroller seat is convertible between an upright position whereat the stroller seat is substantially vertical and connectable with the car seat, and a horizontal position whereat the stroller seat is substantially horizontal and adapted to be seated. The stroller seat includes a support frame operable to extend beyond and rise above the stroller seat to engage the car seat in the upright position, and operable to be moved to be lower than the stroller seat in the horizontal position.

Abstract: Vehicle for carriage of children, comprising a frame and at least two wheels which are attached to the frame. The vehicle can be transformed between at least a first configuration as pushable buggy and a second configuration for use as a towed trailer, and in both first and second configurations provides room for at least one child. The vehicle can be transformed between the first and second configuration by adjusting the width of the frame and location of the center of gravity.

Abstract: A stroller with a front tray in front of the seat that can be folded down. The front tray is attached to two side bars of the stroller and can rotate around an axis that is horizontal and perpendicular to the moving direction of the stroller. The rotation axis is along a substantially straight side of the tray. When the tray is folded down, the tray is substantially vertical with the straight side at the top, and an infant car sear can be placed on the stroller such that the vertical tray is inserted into a notch in the base of the car seat.

Abstract: A child's carriage including a frame that supports a seat for a child and from which a rear bar extends for pushing the carriage and from which a front rod extends to a fork to which a front wheel is mounted. A swivel is mounted between the front rod and the fork which swivel is covered by a housing for at least one light source and wherein the light source is controlled by a switch on the rear bar.

Abstract: A seat assembly mechanism for a stroller has a seat frame and a main frame. The seat assembly mechanism includes a positioning device and a seat supporting member. The positioning device is disposed on the seat frame and includes a positioning pin movable between a locking position and a releasing position. The seat supporting member is disposed on the main frame, and includes a positioning-device recipient corresponding to the positioning device and a positioning groove located at a side of the positioning-device recipient. Furthermore, the positioning device is detachably assembled to the seat supporting member, and the positioning pin inserts into the positioning groove when the positioning device is disposed in the positioning-device recipient of the seat supporting member for assembling the seat frame to the main frame.

Abstract: A system and method are provided for detachably mounting different types of infant carriers on a support structure. The system includes a mounting platform provided on a frame of the support structure. The mounting platform includes a first and second coupling structure. The first coupling structure is adapted to engage with a first fastener structure of a first infant carrier, whereas the second coupling structure is adapted to engage with a second fastener structure of a second infant carrier. The mounting platform also includes a rotary support base that can be rotated relative to the frame between a first position and a second position. In the first position, the support base enables engagement of the first coupling structure with the first fastener structure. In the second position, the support structure enables engagement of the second coupling structure with the second fastener structure.

Abstract: A pushable frame includes a plurality of wheels to allow maneuvering due to a rolling motion of one or more wheels. A power generator is operatively connected to the wheels such that kinetic motion of the wheels caused by the frame being pushed or pulled by the user is converted into electric energy. A speed regulator is operatively connected with the plurality of wheels and the power generator such that a rolling speed of one or more wheels is controlled based on a rolling condition of the one or more wheels.

Abstract: A baby stroller foldable joint includes a joint mechanism having a top frame joint, a bottom frame joint and a rear wheel frame joint connecting to the top frame, the bottom frame and the rear wheel frame respectively. Each frame joint is provided with a breach at its rim, and the breaches are aligned with one another. The joint mechanism has a gear set in its interior. A control mechanism has a slider flexible to move back and forth, driving a flexible block through a linkage, for the purpose of clasping or separating the breaches of the frame joints, to accomplish expansion or folding of the frame. By aforesaid combination, expansion or folding of the frame can be simultaneous and accomplished at one go, and expansion can even be locked automatically, to make the manipulation handy and swift.

Abstract: Convertible strollers having connecting mechanisms for joining single strollers to each other.