Abstract: A container comprising a carriage including a superposed base, a rack, and a plurality of compartments, a cabinet defining an inner space configured to accommodate the carriage, and a locking system configured to cooperate with an anchorage provided on the ground surface, the locking system presenting a locked state in which removal of the container from the anchorage is prevented, and an unlocked state, wherein the cabinet is mounted on the rack of the carriage and the rack is movable with respect to the base between retracted and extended positions, a skirt of the cabinet masking at least a major portion of the base of the carriage in the retracted position of the rack, the locking system being in the locked state when the rack is in the retracted position.

Abstract: A riding lawn mower having an adjustable cutting width has at least one front wheel, a plurality of rear wheels, a frame extending from the at least one front wheel to the plurality of rear wheels and a plurality of cutting decks, each cutting deck comprising a cutting blade. A motor is supported by the frame and configured to drive the cutting blades of the cutting decks. A support configured to couple the cutting decks to the frame. The support is configured to extend at least one of the cutting decks laterally from beneath the frame to adjust a cutting width provided by the blades.

Abstract: An improved wheel for a mobility apparatus designed is disclosed herein. The wheel conforms to obstacles in the ground, creating a smoother walking experience. The inner web of a tire of the wheel preferably consists of polygonal reliefs offset from each other over multiple layers in a radially symmetric pattern to create a web which naturally compresses to absorb shock from obstacles. The tire's inner core preferably consists of a hexagonal membrane that extends parallel to the axel of the tire and extends out of each side of the wheel such that it is visible.

Abstract: An electric transformable scooter that can transform between a stand-on configuration and a ride-on configuration. The scooter has a fixed frame member at the front to which the front wheel and handlebar are mounted, and movable frame member that extends between the rear wheel and the fixed frame member. The front end of the movable frame member slides or otherwise adjusts to either a lower position or an upper position on the fixed frame member. When the movable frame member is at the lower position and locked thereat, it is generally horizontal, and its top surface defines a stand-on floorboard for stand-on operation. When the movable frame member is slid to its upper position and locked thereat, it is inclined from front to rear, and portion rotates away and locks thereat to become a seat for ride-on operation.

Abstract: A scooter includes a lower body with a first end and a second end, a rear wheel rotatably supported by the first end, an elongated front body with a lower end and an upper end, a guide fixed within the front body extending from the lower end to the upper end, an attachment member pivotably fixed to the second end of the lower body and engaged by the guide, and a front wheel rotatably supported by the lower end.

Abstract: Devices and methods for mobility assistance are disclosed. The disclosed features may assist a person with movement by providing support for the person as the person moves. Further, features for easily storing and transporting items in various compartments of the device are disclosed. Support of the user and/or items may be provided by a lightweight composite structure that further allows for free movement of the user, such as taking full strides while walking or running. The device may further be repeatedly configured between collapsed and deployed configurations via a locking mechanism and an actuatable release. Pivotable joints allow the various sections to be stowed into a smaller, collapsed configuration that is easily carried or otherwise transported, as well as deployed into a larger, deployed configuration for assistance while moving.

Abstract: A stroller includes a stroller frame, a frame locking mechanism, and a seat. The stroller frame can be folded or unfolded. The frame locking mechanism locks the stroller frame to be unfolded. The seat is pivotally connected to the stroller frame and is connected to the frame locking mechanism. Therein, when the seat pivots, the seat drives the frame locking mechanism to unlock the stroller frame so as to fold the stroller frame. The stroller is structurally simple and is convenient to be folded.

Abstract: A convertible cargo case for a wagon is provided. The cargo case has a housing having a first side wall, a second side wall opposing the first side wall, a third side wall joining the first side wall and the second side wall, a fourth side wall opposing the third side wall and joining the first side wall and the second side wall, and a bottom wall joining a bottom end of the first side wall, second side wall, third side wall and fourth side wall to define a cavity. A connector extends from the cavity. The connector has a receiver for removably securing the housing to the wagon, wherein the housing is convertible between three configurations: an open cargo configuration, a closed cargo configuration, and a wagon storage configuration.

Abstract: Compactible wagons are provided having at least two operational configurations. The compactible wagon has a first unfolded configuration where the first and second set of wheels are spaced apart by a horizontal platform, and where the wagon has one or more sidewalls, and at least a second compacted configuration where the horizontal platform is folded into a vertical configuration and the first and second set of wheels are disposed next to each other. The compactible wagon can have one or more additional configurations, including at least an unfolded configuration without sidewalls and/or an extended configuration where one or more of the sidewall are disposed to extend the surface area of the horizontal platform of the wagon. Many different rigid and flexible sidewalls may be used with the wagon.

Abstract: A translational collapsible wagon includes a frame assembly, a tow bar assembly and wheels. The frame assembly includes a bottom frame, a front frame, a rear frame and collapsible side frames arranged on the left side and the right side of the bottom frame. Each side frame includes coplanar X-shaped cross tube assemblies. Each coplanar X-shaped cross tube assembly includes a first oblique tube, two second oblique tubes and a hollow seat. A strip opening is formed in the middle of the hollow seat in the front-back direction. Tube connectors are oppositely arranged at the front end and the rear end of the hollow seat in the vertical direction respectively. The first oblique tube penetrates through the strip opening and is hinged to the middle of the strip opening at the center through a hinge shaft. The two second oblique tubes are mounted in the tube connectors at the front end and the rear end of the hollow seat respectively and arranged in parallel and intersect with the first oblique in an X shape.

Abstract: An interlocking folding component for strollers, comprising: a handle lower tube, bending joints and folding joints installed on the upper end and lower end of the handle lower tube; the folding joint is configured with a first locking device to lock itself to prevent rotation; the bending joint is configured with a second locking device to lock itself to prevent rotation; the second locking device is interlocked with the first locking device and can unlock the first locking device; the upper end of the bending joint is configured with an unlocking device; the unlocking device can be driven to unlock the second locking device, so that the bending joint can rotate, and during rotation. After folding, the stroller occupies a small space and can stand, providing great convenience for transportation and storage.

Abstract: The telescopic trailer bed extension is an accessory that is installed on an existing trailer in order to extend the useful surface of a trailer bed by locking the tailgate in a parallel orientation with the trailer bed. The telescopic truck bed extension includes a pair of telescoping members that are slideably engaged on a bottom surface of the trailer bed. The telescoping members extend rearwardly so as to extend beyond the trailer bed, and enable the tailgate to rest thereon in a parallel orientation with respect to the trailer bed. The telescoping members are each further defined with an inner member and an outer member. The tailgate includes a pair of tailgate brackets that align with and secure to inner members of the telescoping members.

Abstract: A multipurpose wagon having a wagon body, front and rear wheels and a handle. The wagon body has a front portion and a rear portion, the handle being coupled to the front portion, a front wall adjacent the front portion and a rear wall adjacent the rear portion. Additionally, the wagon body has a first sidewall extending between the front wall and the rear wall along one side of the wagon body, and a second sidewall extending between the front wall and the rear wall along an opposing side of the wagon body. The first sidewall has a panel that is removable from the first side of the wagon body and connectable to the second sidewall of the wagon body.

Abstract: A folding vehicle structure includes a frame having a plurality of members. A first member intersects a second member at a first pivot point. A third member, spaced from the first and second members, intersects a fourth member, which is also spaced from the first and second members, at a second pivot point. The frame includes a first cross-member extending between the first and second intersection points. The frame is collapsible.

Abstract: Foldable scooter comprising a footboard, a front wheel, a rear wheel and a steer. The front wheel is suspended to a front frame carrying the steer. The front frame is connected to the footboard by a lockable hinge allowing hinging about a hinging axis by the front frame relative to the footboard between a position for use and a folded position. One or more extensions of the front frame are slideably received in a support frame of the footboard. A rod pivotably connects the footboard support frame to the front frame at a distance below the hinging axis.

Abstract: The present invention is a wagon that can be folded along a middle plane that bisects the wagon between a front and rear portion. The folding wagon comprises of wheels, a folding frame, a support structure, a front panel a handle connected to the frame, wheels, and a bag hanger that are detailed herein. The folding frame includes a top rail formed of a top rail front portion and a top rail rear portion, a middle rail formed of a middle rail front portion and a middle rail rear portion, a bottom rail formed of a bottom rail front portion and a bottom rail rear portion. The top rail, the middle rail, and the bottom rail are connected by a hinge means. The top rail front portion is mounted to the top rail rear portion.

Abstract: A foldable structure includes: an upper assembly forming an upper portion of the structure; a base assembly forming a lower portion of the structure; a centrally-located hub assembly operatively connected to the base assembly; and a post extending from each corner of the upper assembly to a corner of the base assembly. At least one rotatable wheel assembly is provided at each corner of the lower portion of the structure extending from the structure to engage a surface. Each wheel assembly includes at least one support surface adapted for supporting and guiding the wheel on a surface and at least one groove provided on opposing sides of the support surface.

Abstract: A bicycle trailer that is foldable into a small storable position that expands to include a bicycle trailer that can be configured to convert into a lounge chair, a dolly, a baby bed with or without a canopy, a table or a wagon using an improved tow bar and trailer hitch that easily attaches and detaches to a bicycle as desired.

Abstract: Disclosed is a foldable walker device with an air tank holder. The purpose of the present invention is to enable individuals to easily transport an air tank while using a walker. The air tank holder includes a vertical support with upper and lower outwardly protruding rings that are used to hold an air tank in place. The upper ring is positioned at a substantial midpoint of the vertical support to maintain the air tank in an upright position. The lower ring can be positioned at the bottom of the vertical support and can have a rod extending along the diameter of the ring to support the base of the air tank. The air tank holder is affixed to a front of a walker to prevent the air tank holder from hitting the user's legs when the user is walking.

Abstract: An infant stroller apparatus includes a rear leg frame including a first side segment, a handle having a second side segment, and a hinge structure assembled with the first and second side segments. The hinge structure includes a first and a second coupling part, and a latch. The first coupling part is pivotally connected with the first side segment. The second coupling part is affixed with the second side segment and is pivotally connected with the first coupling part. The latch is operable to lock the first coupling part with the second coupling part to block rotation of the second coupling part relative to the first coupling part about the second pivot axis. When the stroller apparatus is in a deployed state, a distal end of the second coupling part faces a rear surface of the first side segment, and the latch engages with the first coupling part at a location above the distal end.

Abstract: A dimensionally adjustable vehicle, which comprises a platform of pivoting and non-pivoting plates arranged such that the spacing between a pair of the non-pivoting plates is changed to dimensionally adjust the vehicle upon application of an initiating force to a plurality of the pivoting plates which causes a pivoting motion. A section of the platform includes a pair of laterally adjacent and laterally pivoting plates which is interposed between a pair of the non-pivoting plates such that a lateral side of each of the laterally pivoting plates is pivotally connected to a lateral side of an adjacent non-pivoting plate. Application of the initiating force the pair of laterally adjacent and laterally pivoting plates causes a lateral dimension of the vehicle to be adjusted.

Abstract: A foldable golf bag cart includes a connecting seat that has two tubular walls, each of which is formed with an interior pivot hole and a swing hole, and a positioning member that is movably mounted on a rear wheel leg. The swing hole has a swing section, an abutment section, and an insert section. When the positioning member is moved in the insert section, the rear wheel leg is pushed into the abutment section so that the rear wheel leg is prevented from moving forwardly and rearwardly. When the positioning member is disengaged from the insert section, the rear wheel leg extends into the swing section and is movable forwardly to a folded position.

Abstract: The present invention relates to a collapsible garment rail assembly that can be stacked with similar garment rail assemblies.

Abstract: An ambulatory assistance device includes a base having a set of wheels the base configured to at least partially surround a patient's body to provide a maximum level of support along all possible force vectors. The base includes ballast to lower the center of gravity of the ambulatory assistance device. Furthermore, the ambulatory assistance device includes a frame assembly having a handle extending from the base. The handle is disposed at a distance between about two inches and three inches proximal to the center of gravity of the unit. This positioning of the handle, in combination with the positioning of the wheels of the base provides the ambulatory assistance device with a substantially stable design.

Abstract: A folding vehicle structure includes a frame having a plurality of members. A first member intersects a second member at a first pivot point. A third member, spaced from the first and second members, intersects a fourth member, which is also spaced from the first and second members, at a second pivot point. The frame includes a first cross-member extending between the first and second intersection points. The frame is collapsible.

Abstract: A folding vehicle structure includes a frame having a plurality of members. A first member intersects a second member at a first pivot point. A third member, spaced from the first and second members, intersects a fourth member, which is also spaced from the first and second members, at a second pivot point. The frame includes a first cross-member extending between the first and second intersection points. The frame is collapsible.

Abstract: A folding vehicle structure includes a frame having a plurality of members. A first member intersects a second member at a first pivot point. A third member, spaced from the first and second members, intersects a fourth member, which is also spaced from the first and second members, at a second pivot point. The frame includes a first cross-member extending between the first and second intersection points. The frame is collapsible.

Abstract: In exemplary implementations of this invention, a foldable vehicle has a foldable chassis. The wheelbase (and thus the overall footprint) of the vehicle can be reduced when parking, and can be extended when driving on the open road. In exemplary implementations the ability to shorten and lengthen the wheelbase is achieved by using two 4-bar linkages, activated by one or more linear actuators positioned in parallel. The dual 4-bar linkage and linear actuator(s) can provide: (i) the ability to maintain full maneuverability in the vehicle's folded and unfolded state; (ii) a fail-safe static system, and (iii) a rigid but transformable chassis.

Abstract: A field litter support (1) includes two side structures (2, 3), each supporting at least one wheel (4) in order to define a frame (40), connecting devices (38a, 38b, 38c, 38d) for attaching a litter (100) to the frame (40), elements (5) adapted to reciprocally move the side structures (2, 3) and a mechanism (6) for blocking the elements (5), and therefore the structures (2, 3), in a predetermined position, attachable to the structures (2, 3). The structures (2, 3) are reciprocally moved close or away along the axis (60) of the wheels (4) without removing the frame (40). This characteristic, however, does not jeopardize the size, because, once the field litter support (1) has been packaged, it has a size equivalent to the one of the closed field litter supports of the prior art.

Abstract: An expandable multi-compartment luggage having a second luggage bag hingeably attached to the first luggage bag. The second luggage bag having an upper portion and a collapsible lower portion. The collapsible lower portion being moveable between a collapsed position to an expanded position defining a lower interior compartment. The luggage also including a dividing wall disposed between the upper and lower portions of the second luggage bag, and which is movable from a closed position dividing the upper interior compartment of the second luggage bag and the lower interior compartment of the second luggage bag and an open position with the upper interior compartment of the second luggage bag being in communication with the lower interior compartment of the second luggage bag.

Abstract: A bearing structure includes a wheel assembly defining a first front wheel assembly and a second rear wheel assembly, the rear wheel assembly including at least two wheels spaced by a first width defining a first position; wheel supports connecting the axes of rotation of the wheels with the bearing structure; a first folding device enabling a first folding causing a reduction in spacing between the two rear wheels to a second width lower than the first width, defining a second position. A connection system, connecting the wheel supports of the first and second assemblies to the first folding device, enables a second folding of the wheels so as to allow a rotation substantially equal to 90° of the wheels in the horizontal plane when the wheels are in the second position.

Abstract: A collapsible shopping cart includes a collapsible support assembly having a support frame with a vertical frame member and a horizontal frame member. The vertical support member is pivotally secured to the horizontal support member allowing the support frame to be selectively folded. A plurality of wheels are coupled to the horizontal support member. The plurality of wheels are coupled to the horizontal support member for movement between a use orientation and a storage orientation, wherein when the plurality of wheels are in the use orientation they extend from the horizontal support member in a manner permitting engagement with a horizontal support surface such that the support assembly may roll thereupon. First and second storage receptacles shaped and dimensioned for selective attachment to the support assembly are provided.

Abstract: A baby carriage includes a wheel assembly and a foldable frame connected to the wheel assembly. The foldable frame includes a front leg, a rear leg, a push handle located above the rear leg and connected to the front leg, a connecting rod, and a basket tube located on the rear leg. The front leg and the rear leg are connected to the wheel assembly. The push handle is pivotally connected to the front leg. An end of the connecting rod is pivotally connected to the rear leg. The baby carriage of the invention can be folded so as to avoid occupying much space.

Abstract: A child's active transportation device comprising: a steering rod permanently or removably affixed to a wheel base, said wheel base having a platform and mechanism or device for affixing a plurality of wheels to said wheel base, and also having a plurality of wheels and associated equipment and method of use.

Abstract: A scooter foldable seat structure comprising an elongated plate is disclosed, wherein a footplate and a seat plate pivotally connect to two ends of the plate respectively; an elongated front supporting element pivotally connected to a bottom side of the plate; a first movable connecting element foldably connected to the bottom side of the plate and the front supporting element respectively; an elongated rear supporting element pivotally connected to a bottom side of the seat plate; and a second movable connecting element foldably connected to the bottom side of the seat plate and the rear supporting element respectively. Thereby, the front supporting element, the first movable connecting element, the seat plate, the rear supporting element and the second movable connecting element can be folded away and accommodated under the plate at the same time and unfolded to provide the stable seat plate to sit on.

Abstract: A foldable frame includes first and second upper bars, first and second lower bars, and first and second pin joint pieces. The first and second pin joint pieces are respectively provided with first and second pin joint holes. The first and second lower bars are respectively fixed with the first and second pin joint pieces. The first pin joint piece is pin-jointed with the second pin joint piece through the first pin joint hole, and end surfaces of the first and second pin joint pieces respectively abut against end portions of the second and first lower bars. Two ends of the first upper bar are respectively pin-jointed with an upper end of a front wheel support and at the second pin joint hole of the second pin joint piece. Two ends of the second upper bar are respectively pin-jointed with a rear wheel support and at the second pin joint hole of the first pin joint piece.

Abstract: A posterior walker has an anteriorly open, wheeled frame having a transverse posterior structural member, a left and right forearm support member attached to the frame, and adapted to be aligned with the forearms of a user at an angle wherein the user's wrist is lower than the elbow, and left and right hand grips associated with the left and right forearm support member.

Abstract: A folding skateboard may include a first board piece, a second board piece and a third board piece. The first board piece and third board piece may be secured to the second board piece with first and second sets of spring hinges. The folding skateboard may convert from an unfolded configuration into a folded three-layered configuration for storage. The trucks of the folding skateboard may be easily secured to and removed from the first and third board pieces.

Abstract: A scooter configurable into a stowed and an unstowed position includes an elongated deck support pivotally coupled at opposed ends to a steering assembly and to an elongated deck. In some embodiments, the scooter includes a cargo stand pivotally coupled to the elongated deck and configurable into a stowed and an unstowed position. The cargo stand is further configured for removably securing a cargo when in the unstowed position. In certain embodiments, the scooter includes a brake element pivotally coupled the elongated deck and spring biased away from a rear wheel of the scooter. Application of a force to the brake element hinders a rotation of the rear wheel by moving at least a portion of the brake element towards the rear wheel and removal of the force moves the brake element away from the rear wheel.

Abstract: A foldable frame includes first and second upper bars, first and second lower bars, and first and second pin joint pieces. The first and second pin joint pieces are respectively provided with first and second pin joint holes. The first and second lower bars are respectively fixed with the first and second pin joint pieces. The first pin joint piece is pin-jointed with the second pin joint piece through the first pin joint hole, and end surfaces of the first and second pin joint pieces respectively abut against end portions of the second and first lower bars. Two ends of the first upper bar are respectively pin-jointed with an upper end of a front wheel support and at the second pin joint hole of the second pin joint piece. Two ends of the second upper bar are respectively pin-jointed with a rear wheel support and at the second pin joint hole of the first pin joint piece.

Abstract: A rolling walker comprises a frame, a seat supported by that frame, and a backrest supported by the frame. By one approach the backrest is configured to selectively move between a first position that provides back support for a person sitting in the seat facing in a forward direction and a second position that provides back support for a person sitting in the seat facing in a rearward direction. If desired, this backrest can be comprised of a material (such as a memory foam material) that biases the backrest towards that first position when the backrest is in the first position and that biases the backrest towards the second position when the backrest is in the second position.

Abstract: A collapsible vehicle trailer consisting of a frame/cargo surface and a draw mounted to the frame/cargo surface by a hinge connection in such a manner that the draw may be folded down and pushed in underneath the frame/cargo surface, and that to the frame and/or cargo surface a hinged wheel suspension is arranged consisting of wheels, hub and spring so that the wheel with suspension may be rotated to become flush with the cargo surface, and that between wheel suspensions one or more shafts being articulated at the centre and at each side towards the wheels are disposed. One or more bars are arranged between the hinged draw and the center part/section of the shaft, whereby the bar(s), when the draw is folded backwards in underneath the cargo surface, pushes the centre part/section of shaft backwards, whereby the wheels and wheel suspensions are rotated in underneath and flush with the frame/cargo surface.

Abstract: A stroller apparatus can collapse in a compact and convenient manner. In some embodiments, the stroller apparatus can be provided with a mounting fixture capable of detachably fastening a child support accessory thereon. The mounting fixture affixed on the stroller frame can lock with a connector affixed on the 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 and forward facing configuration of the child support accessory. In other embodiments, the stroller apparatus can include a child support that has a connector portion through which it is assembled with the stroller frame. The construction of the stroller frame is such that it can be conveniently collapsed in a compact form.

Abstract: An apparatus, such as for tree trimming, includes a mobile carriage having a frame and a pedestal supported by the frame. The apparatus further includes a boom, such as a telescoping boom that is secured to the pedestal through a boom support. The pedestal is pivotable with respect to the carriage frame so that the boom may be selectively operated in a variety of orientations. The mobile carriage of the apparatus is sufficiently compact to fit though tight openings, while also being capable of stably supporting boom extension for operation of a distal end of the boom at elevated heights.

Abstract: A powered vehicle has a rear frame assembly and a front frame assembly that are pivotally attached to one another, and can be pivoted from a normal fully-extended operating position to a folded position in which the frame assemblies are positioned substantially adjacent to one another, effectively reducing overall vehicle length to about half. One or more latch members lock the front and rear frame assemblies in the fully-extended, normal operating position, and they may be used to lock the frame assemblies in the folded position. The seat support structure may be integrated with the front and rear frame assemblies such that pivoting the frame assemblies toward the folded position collapses the seat support. The steering tiller may also be collapsible toward the front frame assembly. The rear wheels may be mounted on a transaxle that is pivotally mounted on the rear frame assembly. An extendable handle may be provided to assist in the folding operation and to tow the collapsed vehicle on its anti-tip rollers.

Abstract: The teachings provided herein are generally directed to compact vehicle drive mechanisms that can be used in the design of a foldable, carry-on vehicle. The compact drive mechanisms presented herein, for example, have contributed to the advent of the compact, carry-on bicycles set-forth in the teachings which include drive-and-steering units and drive-and-chassis units.

Abstract: A rollator includes a support frame assembly, a seat having first and second positioning notches, and a backrest unit including a backrest frame having two opposite ends pivoted to the support frame assembly, and a positioning frame having two opposite ends pivoted to the backrest frame. The positioning frame is engageable with a selected one of the first and second positioning notches. The backrest frame cooperates with the seat unit to define a seating space that faces rearward when the positioning frame is engaged with the first positioning notch, and cooperates with the seat unit to define a seating space that faces forward when the positioning frame is engaged with the second positioning notch.

Abstract: A collapsible hitched trailer comprised of a bed member having a center bed section, and two pivotable bed sections pivotally attached to opposite sides of the center bed section. A protracting wheel axle member attached to an underside of the center bed section. Two wheels, one attached to each opposite end of the wheel axle member, and a draw bar member attached to one of the two pivotable bed sections, wherein the hitched trailer can be folded into a smaller shape and stored in a smaller area.

Abstract: A two-fold four-wheel golf bag cart folding device includes a lower cart frame having a connecting plate installed at an upper end of the lower cart frame and a lower supporting base disposed at a lower end of the lower cart frame. An upper cart frame includes a lower end coupled to the connecting plate and has an upper supporting base and a handle module at an upper end, such that the upper supporting base and the lower supporting base are fixed to the golf bag. A rear wheel stand is mounted on both sides of the connecting plate and has a rear wheel. A pull rod includes an end coupled to the handle module and the other end coupled to the rear wheel stand. A front wheel set has two front wheels installed on both sides of the lower supporting base respectively. A locking mechanism is installed between an upper end of the upper cart frame and a lower end of the handle module and has a function of fixing an angle between the upper cart frame and the handle module.

Abstract: A height adjustable work seat is disclosed. The work seat is collapsible and extendable, and has a base, a seat pan and four folding and lockable legs. Four wheels are mounted to the bottom of the base. The folding legs connect the seat pan to the base. Each folding leg pivots at the base, the seat pan and a center pivot. The seat pan is at a maximum height relative to the base with the four folding legs fully extended. The seat pan is at a minimum height relative to the base with the four folding legs fully folded. A releasable locking mechanism secures each of the folding legs in a fully extended condition. One or more crossbars may connect opposing sleeve locks, aiding in locking, unlocking, folding or extending the pair of legs between which each crossbar extends. The seat pan may have a seatback.