Abstract: A stroller allowing an operation for switching the conditions of the wheels in accordance with a position of the handle to be performed in a more stable and reliable manner is provided. The stroller includes a frame part; a handle swingably connected to the frame part; caster mechanisms that turnably hold wheels; and a switch mechanism having a switching member disposed on the handle. The caster mechanisms are provided with locking member for restricting turnings of the wheels. The switching member is movable about a swing center of the handle in accordance with a swinging of the handle. A transmission member operates the locking member in conjunction with an action of the switch mechanism.

Abstract: A foldable stroller includes a frame, a seat, and a plurality of wheels. The seat is disposed on the frame. The frame includes two back-frame side rod sections, two rear-leg side rod sections, and two rear-leg connecting members. Each of the back-frame side rod sections is connected pivotally to the corresponding rear-leg side rod section by the corresponding rear-leg connecting member. As such, the back-frame side rod sections are pivotable respectively toward the rear-leg side rod sections to fold the frame. The frame further includes two knuckles disposed respectively on bottom ends of the back-frame side rod sections, and two latch mechanisms disposed respectively on the knuckles. The latch mechanisms are operable to lock the frame in an unfolded or folded state.

Abstract: A basket frame of a stroller comprises a connecting device connected between a front frame and a rear frame. The connecting device comprises a first connector having a first pivot part, a second connector having a second pivot part, and a torsion spring. The first pivot part is pivotally connected to the second pivot part. An application of a downward force on the rear frame deforms the torsion spring and causes the rear frame to pivot downward. A removal of the downward force causes a spring return to make the rear frame to return to a fixed position.

Abstract: A convertible double stroller comprising a pair of cross bars pivotally connected at a common vertex connected to a pair of telescoping rods creating a generally hour-glass shaped frame assembly having a front end and a rear end, a plurality of wheels attached to the frame assembly, a handle bar attached to the frame assembly rear end, and a pair of seat mounts fixedly attached to each of the telescoping rods, wherein the convertible double stroller may be selectively transitioned between three configurations: (a) a seated configuration wherein the frame assembly is in a fully expanded position thereby positioning the seat mounts in a side-by-side placement for seating; (b) a seated configuration wherein the frame assembly is in a moderately expanded position thereby positioning the seat mounts in a front-to-rear placement for seating; and (c) a storage configuration wherein the frame assembly is in a fully collapsed position for storage.

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 baby jogger includes an upper frame unit, two coupling members, two stop members, two rear frame bars, a rear wheel axle, a plurality of rear wheels, two linking devices, two side bars, a lower frame unit, a mud fender, a front wheel frame and a front wheel. The front wall of each coupling member is connected between the two sidewalls thereof; the rotary members at the two distal ends of the lower frame unit are respectively accommodated in the accommodation space in the two coupling members; the two distal ends of the U-shaped handlebar of the upper frame unit are respectively accommodated in the locating hole in each of the two coupling members. This arrangement avoids accidental finger jam when collapsing the upper frame unit and the lower frame unit, assuring a high level of safety.

Abstract: A baby stroller is formed by a stroller frame and a chair, and the stroller frame includes a rotatable base. When the baby stroller is unfolded, the base is provided for abutting the stroller frame and positioned automatically, and when the baby stroller is folded, the chair and the stroller frame are folded and positioned directly together with the rotation of the base. The chair includes a folding joint, such that the chair can be folded directly onto the stroller frame to provide a simple, easy and quick operation and to achieve the effect of reducing the storage volume of the baby stroller.

Abstract: A foldable stroller has a frame assembly with a fold joint, a fold joint, a handle push arm, a front leg with an upper end connected to the fold joint, a rear leg extending down from and pivotally connected to the fold joint, and a drive link. The drive link has a rear end pivotally coupled to the rear leg below the fold joint and a front end pivotally coupled to a lower end of the push arm. The frame assembly is reconfigurable between an unfolded and a folded configuration. In the folded configuration, the fold joint moves upward along the handle push arm. The rear end of the drive link and the rear leg are moved toward and lie closely adjacent the front leg and handle push arm. The frame assembly may automatically move to the folded and/or unfolded configuration. The foldable stroller may also stand upright in the folded configuration.

Abstract: A stroller frame includes two handle rods, a chair disposed between the handle rods, two front leg rods, two rear leg rods, two connecting members, and two locking members. An upper end of each of the front leg rods is connected pivotally to the chair. A front end of each of the rear leg rods is connected pivotally to a lower end of a corresponding one of the front leg rods. Each of the connecting members is connected pivotally between one of the rear leg rods and a corresponding one of the handle rods. Each of the locking members is disposed at the rear end of a respective one of the rear leg rods, and the lower end of each of the handle rods is separably connected to a respective one of the locking members.

Abstract: A folding device of a wheelchair includes a first folding unit and a second folding unit, wherein the first folding unit includes a first part, a second part and a connection rod connected between the first part and the second part. The first part has a first link and a second link respectively and pivotably connected thereto, and the second part has a third link and a fourth link respectively and pivotably connected thereto. The second folding unit has two boards and the two boards have two connection units. Each board has a recess and two lugs. Each recess has a first plate and a second plate connected thereto. A handle has two ends which are respectively and pivotably connected to the first and second plates.

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: 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: The present invention provides an ergonomic mobility chair comprising a frame, two primary wheels and at least one secondary load-bearing rolling point device. The primary wheels are usable for hand propulsion of the chair and positioned forward of the center of gravity of the chair. The primary wheels are mounted on a collapsible axle structure coupled to the frame. The at least one secondary load-bearing rolling point device is positioned aft of the center of gravity of the chair and coupled to the frame. A seat and two knee supports are coupled to the frame, the seat and the knee supports being arranged with respect to one another so as to position a user of the chair in a kneeling, upright, and generally neutral physiologic position. The seat and the knee supports each comprise at least a comfort cushion support coupled to the frame of the chair.

Abstract: A high chair includes a foldable support frame, a chair, and a pair of positioning mechanism. The foldable support frame has a pair of rail struts and a pair of backup struts, the pair of backup struts being pivoted to the pair of rail struts and releasably locked in a use position by a spring-biased coupling sleeve. The chair has a pair of sliding sleeves being capable of sliding alone the pair of rail struts thereby hiding the chair under a dining table. The pair of positioning mechanism are mounted on the chair and associated with a pair of locking elements mounted in the sliding sleeves for releasably locking the sliding sleeves relative to the pair of rail struts, so as to adjust and fix the chair at a selected height.

Abstract: The present invention provides a baby stroller folding device comprising an upper stroller frame, having a bendable handle installed at an upper end of the upper stroller frame; a lower stroller frame, with an upper end coupled to the upper stroller frame, and having a front wheel leg of a front wheel and a bendable step pipe disposed at the bottom of the lower stroller frame; a rear wheel leg, disposed separately on both sides of the upper and lower stroller frames, and having the rear wheel installed at the bottom of the rear wheel leg, a first slide member installed at the middle of the rear wheel leg, a pull rod installed between the first slide member and the upper and lower stroller frames, and a latch rod disposed at an upper end of the rear wheel leg; a folding joint, installed separately between the upper and lower stroller frames and the rear wheel leg, for coupling and positioning the upper and lower stroller frames, and the rear wheel leg having internal and external gear discs with a notch each a

Abstract: A stroller for disabled children, having a foldable underframe and a seat receiving means fixed to the underframe for receiving a seat with a backrest. The seat is fastened in the seat receiving means facing toward or away from the direction of travel. The seat receiving means is pivotable in relation to a horizontal plane for adjusting the inclination of the seat and is lockable in its respective position in relation to the underframe. The pivoting of the seat receiving means is provided by a pivoting device, which includes a control element, a locking element, and an actuator, which is in operative connection with the control element and the locking element.

Abstract: A mobility device for people who need assisted mobility comprising side support structures for supporting the weight of an occupant in a semi seated position, a back rest structure, a shin rest structure and an arm rest structure. The mobility device of the present invention provides a rear access which is feasible by moving outwardly and upwardly the side support structures.

Abstract: An improved pushchair frame (10) of a type that can be collapsed for ease of transport or storage etc. The frame comprising a push/pull handle (12), a front wheel frame (14) on which at least one front wheel (16) is rotatably mounted and a rear wheel frame (18) on which at least one rear wheel (20) is rotatably mounted. The frame comprising a seat mounting yoke (22) to which the front and rear wheel frames are coupled, at least one of the front and rear wheel frames being pivotably coupled to the yoke, the frames having an operating position in which they are spaced from one another and a stowed position in which they are generally adjacent one another. The seat mounting yoke is rotatable, relative to at least one of the front and rear wheel frames, between an operating position and a stowed position in which the yoke is located generally adjacent one of the front and rear wheel frames. A retaining means maintains the yoke and the front and rear wheel frames in their operating position.

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 collapsible stroller includes a collapsible seat-support frame and a frame lock coupled to the seat-support frame. The frame lock is operable by a caregiver to retain the seat-support frame in an erect configuration or release the seat-support frame so that it is free to move to a collapsed storage configuration.

Abstract: A stroller device comprising a frame having a first end and a second end; a handle telescopically received in a handle attachment component disposed on the first end of the frame; a wheel shaft telescopically received in a wheel attachment component disposed on the second end of the frame, wherein a wheel is disposed on the wheel shaft; optionally a prop leg attached to the frame via an attachment mechanism, the prop leg functions to help prop up the stroller device in an upright position; and a first securing strap disposed on the frame for helping to secure an item atop the frame.

Abstract: A folding stroller with changeable seating positions two infants or children is provided. The seating positions for two children may include side-by-side, with the seats positioned to be transverse to the direction of travel of the stroller, with seats facing the same or facing in opposite directions. Seating positions may also include in-line front-to-rear, facing forward or backward; side-by-side facing forward or backward. At least one seat may be provided with a reclining mechanism in which the seat may be reclined between a first position and a second position such that the center of mass of the seat remains substantially aligned with a vertical axis of the stroller.

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: 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 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 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 stroller comprises a foldable stroller frame including two handle tubes, two front leg tubes connected respectively to lower ends of the handle tubes, and two rear leg tubes connected respectively and pivotally to the front leg tubes. Each of the handle tubes has upper and lower handle tube sections interconnected pivotally by a first joint. Each of the front leg tubes has upper and lower front leg tube sections interconnected pivotally by a second joint. Each of the lower handle tube sections is connected pivotally to the upper front leg tube section of the corresponding front leg tube and the corresponding rear leg tube by a third joint. Upon folding the stroller frame, an assembly of the handle tubes and the front leg tubes is folded in a Z-shaped manner.

Abstract: A foldable stroller that moves between an extended position and stowed position, and which comprises a seat portion, a back, at least three legs, and a rear linkage including at least one rear leg, a front linkage including at least one front leg, a back linkage including at least one back mount and a seat portion mounting and when moving the stroller from the extended position to the stowed position, the lower end of the back leg tilts forward the lower end of the front leg tilts backward, the back is folded against the seat portion, the upper edge of the back coming opposite the front end of the seat portion mounting and the upper end of the front leg.

Abstract: A sunshade includes a shaft supporting a set of umbrella ribs mounted for movement on the shaft between opened and closed positions. The sunshade further includes a cloth coupled to the umbrella ribs for movement therewith relative to the shaft to provide a protective cover in the opened position of the set of umbrella ribs.

Abstract: An accessory support device for a stroller apparatus comprises a coupling fixture securely mounted on a handle of a stroller and including a plurality of latching openings, a rotary socket pivotally assembled with the coupling fixture and including a detent and a connecting portion, and an accessory support frame detachably fastened with the connecting portion of the rotary socket. The accessory support frame is operable to rotate with the rotary socket relative to the coupling fixture, and the detent is movable to engage with any one of the latching openings for locking the accessory support frame at different angular positions relative to the coupling fixture.

Abstract: A stroller includes a stroller body having a frame member and an armrest, a back part frame pivotably joined to the stroller body, and a support member connecting the armrest and the back part frame with each other. The support member has a flexibility so as to allow the back part frame to be pivoted with respect to the stroller body within a predetermined range. The support member makes it possible that the back part frame is pivoted with respect to the stroller body, in conjunction with the folding action of the stroller body.

Abstract: A frame for a child's stroller which includes two rear arms and a single front arm which are joined to one another with the two rear arms spaced on opposite sides of a front to rear median vertical plane (P) of the frame and wherein wheels are pivotally mounted to each of the arms so as to be movable between first deployed positions wherein an axes of rotation of the wheels extend transversely to the plane (P) and a second compact storage position wherein the axes of rotation of the wheels extend parallel with respect to the plane (P), and wherein the wheels connected so as to be moved simultaneously between the two positions.

Abstract: A modular wheelchair comprises a number of different modules that include a chassis module with frame members substantially centered along a center plane through the chassis, so that the chassis is able to lay flat when the modules are dissembled. The chassis is connected to a drive module by a single plug/receiver mechanical coupling that may include opposite end geometries. When the plug is in a seated position within the receiver, first end geometries of the two components mate mechanically to resist radial movement, while the second end geometries mate mechanically to resist both radial movement and rotation about an axis of the coupling. Additionally, axial movement in one direction is resisted, with the coupling oriented to apply gravitational force to resist axial movement in the opposite direction. The same arrangement may be used for a seat module.

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: A stroller has a frame assembly, a seat assembly mounted to the frame assembly, and a hub assembly carried by the seat assembly. The hub assembly has a hub axis, a first hub part connected to the stroller, and a second hub part connected to the first hub part and to the seat assembly. A cup holder is connected to the first hub part. The second hub part and the seat assembly can be rotated about the hub axis relative to the first hub part to adjust a recline position of the seat assembly while the cup holder does not rotate therewith.

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 baby walker with a use-transferable upper tray comprises an upper tray, a base, a pair of side posts and a positioning mechanism. The upper tray is positioned by the positioning mechanism in a first position or a second position and being connected with a seat for accommodating a baby-occupant. The base has a rear opening that permits an elder baby to enter without obstacle to learn walking therein by grabbing the rear end of the upper tray, when the upper tray is moved to a second position from a first position. Each of the pair of side posts is connected between the upper tray and the base for positioning the baby walker in a selected height.

Abstract: A mobile chair assembly includes a pair of wheels rotatably supported by a frame, a seat assembly mounted to the frame; and a transfer board assembly movable between a first position and a second position. The transfer board assembly includes a rigid transfer board and an attachment assembly. In the first position, the rigid transfer board and the attachment assembly are disposed under the seat assembly and in the second position, the rigid transfer board extends laterally from the seat assembly. The seat assembly includes a seat support pivotable relative to the frame; and a back support pivotably attached to a back of the seat support. In a folded position, the seat support and back support form an acute angle to one another and the seat support is inclined relative to the frame.

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: There is provided a stroller which has armrests that are attachable and detachable to and from a stroller body, and which is capable of attaching a child seat to the stroller body without using particular attachments. The stroller includes: a pair of front legs; a pair of handles pivotably mounted to the pair of front legs; a pair of rear legs pivotably mounted to the pair of handles; and an X-shaped hinge, coupled to the pair of front legs and the pair of rear legs, for converting the pair of front legs and the pair of rear legs from an unfolded state to a folded state, wherein a pair of armrests is provided, each between each handle and the front leg corresponding to the handle, such that each armrest is attachable and detachable to and from the handle and the front leg.

Abstract: A decontamination transport/wheelchair for use in conditions where a victim is contaminated not allowing acceptance to a medical facility, or where a backboard is not necessary. The chair's sections allow for full draining, cleaning and drying of the chair. The chair is comprised of chemical resistant materials and coatings. The chair has a seat and backrest with holes aiding in cleaning and security of the victim. The chair is vertically foldable minimizing storage size, and deployed in one movement. The chair has a integral forward stop and locking mechanism for the fully deployed position. The chair's brakes are operated by hand or foot. A one piece adjustable, stretchable, chemical resistant restraining strap is used to secure the victim in the chair. The chair has independent pivoting armrests. The chair has a pivoting footrest. The chair has carry handles. The chair has features for holding other medical devices.

Abstract: A stroller fold joint has a first part with a connection hosel coupled to a cylindrical hub body having a circumferential surface and a pivot axis extending through the body. A second part has connector coupled to two plates. The hub body is sandwiched between the plates and the first and second joint parts are pivotable about the pivot axis relative to one another between a folded orientation and an unfolded orientation. A tunnel extends through the hub body perpendicular to the pivot axis. A shuttle is slidable within the tunnel and has an elongate body, a latch end, and an actuator end. The latch end is adjacent the circumferential surface of the hub body at one tunnel end and the actuator end extends into the hosel. With the fold joint in the folded or the unfolded orientation, or moving therebetween, the shuttle is not exposed and covered by portions of the fold joint.

Abstract: An actuating system for a foldable stroller including a foldable stroller frame having left and right front legs and left and right rear legs and a wheel mounted to each leg. The frame includes an operator handle having left and right support rails extending therefrom and connected to the left and right rear legs. At least one locking member is movably connected to at least one the support rails and biased toward a locking position to secure the connection between the left and right support rails and the left and right rear legs. A support member having an actuator connected thereto is connected between the left and right support rails. The actuator is coupled to the at least one locking member. An operator tray is removably connected to the support member and includes at least one recess formed therein for receiving at least a portion of the actuator.

Abstract: A multifunctional stroller includes a frame, a user interface, a light assembly, a music playback device, and a timer-actuated switch electrically coupled directly to a power source. Sensors determine a real-time temperature at the multifunctional stroller and are coupled directly to the timer-actuated switch. Such sensors generate and transmit first, second and third input signals to the timer-actuated switch upon detecting first, second and third triggering events respectively. The user interface generates and transmits first and second control signals to the light assembly and the timer-actuated switch respectively upon receiving corresponding user inputs respectively. The timer-actuated switch is toggled to an open position upon receiving at least one of the first, second and third input signals within a first time period after receiving the second control signal so that power is transmitted to the music playback device for a second time period.

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: A baby stroller for transporting an infant at speeds faster than normal walking is disclosed. This baby stroller can be folded to make it easier to stow and transport. The folding mechanism, a unique feature of the design is directed toward compactness, ease of use, reliability, and reduction in manufacturing costs.

Abstract: A baby trailer safety structure includes a safety block affixed to one sidebar of the bottom frame unit of the baby trailer opposite to the other sidebar that is mounted with a trailer bar. The safety block has a sloping peripheral wall with an arc face to prohibit a young child carrying in the baby trail from standing up on the associating sidebar to collapse the baby trailer, enhancing the safety level of the baby trailer.

Abstract: The technology described herein provides a portable, collapsible, and multifunctional pediatric transporter. The pediatric transporter provides walker, stander, sitting chair, stroller, and wheelchair functionality. The pediatric transporter includes frame members joined each to the other forming a frame, non-swiveled, and swiveled wheels, handlebars disposed upon the frame, a handgrip disposed upon each handlebar, a removable, storable seat, a support bar configured to support the seat when the seat is in use and being a handle bar for a standing child when the seat is not is use, a removable, storable standing platform, hinges disposed upon the frame to provide foldability, collapsibility, and portability of the pediatric transporter, and a lever configured to be depressed single-handedly to collapse the pediatric transporter.