Abstract: A carrying device and a folding method thereof are disclosed. The carrying device includes a seat assembly, a front-leg assembly and a rear-leg assembly. The front-leg assembly includes an upper frame, a lower frame, a first transmission member and a second transmission member. The upper frame is disposed at the lower frame. The first transmission member is disposed at the upper frame and corresponded to the second transmission member. The rear-leg assembly disposed at the lower frame includes a third transmission member disposed corresponding to the second transmission member, a rear-leg frame, and a connector connecting the rear-leg frame with the lower frame. When the upper frame moves relative to the lower frame, the first transmission member drives the third transmission member to move by the second transmission member to link the connector to make the rear-leg frame approach or move away from the lower frame.

Abstract: A moon chair structure comprising a seat ring tube, a front leg tube, a rear leg tube and back supporting rods; the front leg tube, the rear leg tube and the back supporting rods form a frame for supporting the seat ring tube; the rear leg tube and the front leg tube intersect with each other to form a supporting leg; slidable sleeves are provided at top ends of the rear leg tube; the slidable sleeves sleeve on the back supporting rods for forward and backward sliding movement on the back supporting rods; the slidable sleeves disposed at the top ends of the rear leg tube are slidable with respective to the back supporting rods; dynamic and variable triangular structures are formed by coordination between the rear leg tube, the front leg tube and the back supporting rods.

Abstract: A folding chair includes a front leg frame, a rear leg frame and a backrest frame pivotally coupled to a seat. Support braces are pivotally coupled to the backrest frame on one end and pivotally coupled to the front leg frame on an opposing end by sliding members that are slidably coupled to a corresponding slot formed on each side of the seat. In an open configuration the backrest frame is substantially upright and positioned substantially perpendicular to the seat, and each sliding member engages a rear end of a corresponding slot such that the front leg frame forms an X-shape with respect to the rear leg frame. The components are folded in one motion into a folded configuration in which each sliding member engages a front end of a corresponding slot while the backrest frame, seat, and front and rear leg frames are positioned co-planar to each other.

Abstract: A chair that is reconfigurable between a folded and an unfolded configuration includes a first leg having an intermediate portion located between a first end and an opposite second end of the first leg and a second leg having an intermediate portion located between a first end and an opposite second end of the second leg. The intermediate portion of the second leg is pivotally connected to the intermediate portion of the first leg. A support member has a first end pivotally connected to the first leg and an opposite second end. A seat frame has a first portion pivotally connected to the second end of the support member and a second portion pivotally connected to the second end of the second leg. The second end of the support member is adjacent the first end of both the first and second legs in the folded configuration.

Abstract: A foldable chair includes a seat frame, a leg frame and a side accessory arrangement. The side accessory arrangement includes a sliding frame provided on the leg frame at a position underneath the seat frame, and a side accessory coupled with the sliding frame, and is arranged to slide between an idle position and an operation position when the leg frame is in the unfolded position, wherein in the idle position, the side accessory is inwardly slid with respective to the leg frame through the sliding frame to hide in the receiving cavity, wherein in the operation position, the side accessory is outwardly slid from the receiving cavity with respective to the leg frame through the sliding frame for allowing a user to put an object on the side accessory.

Abstract: A foldable chair includes a seat frame, a leg frame and a side accessory arrangement. The side accessory arrangement includes a sliding frame provided on the leg frame at a position underneath the seat frame, and a side accessory coupled with the sliding frame, and is arranged to slide between an idle position and an operation position when the leg frame is in the unfolded position, wherein in the idle position, the side accessory is inwardly slid with respective to the leg frame through the sliding frame to hide in the receiving cavity, wherein in the operation position, the side accessory is outwardly slid from the receiving cavity with respective to the leg frame through the sliding frame for allowing a user to put an object on the side accessory.

Abstract: A folding chair comprises a cross folding supporting frame with two X-shaped cross folding bars. Each of the cross folding bars has a front and rear leg connected crossly to each other in the middle. The upper portions of the two front legs form a first upper portion and the upper portions of the two rear legs form a second upper portion. The seat has a first and second side which are parallel to each other. The first side is pivotally connected to the first upper portion of a cross folding supporting frame. A supporting bar is disposed in the bottom of the seat and can slide between the first side and the second side. The two ends of the supporting bar are connected to the second upper portion of the cross folding supporting frame. The chair folds by a supporting bar sliding along the bottom of the seat.

Abstract: A chair that is reconfigurable between a folded and an unfolded configuration includes a first leg having a first end and an opposite second end. An intermediate portion is located between the first and second ends. A second leg has a first end and an opposite second end. An intermediate portion is located between the first and second ends of the second leg. The intermediate portion of the second leg is pivotally connected to the intermediate portion of the first leg. A support member has a first end pivotally connected to the first leg and an opposite second end. A seat frame has a first part pivotally connected to the second end of the support member and a second part pivotally connected to the second end of the second leg. The second end of the support member is adjacent the first end of both the first and second legs in the folded configuration.

Abstract: A folding chair is disclosed. The chair includes a plurality of legs, including front and back legs, a seat, and a folding unit. The folding unit is attached to the legs and the seat, and it is configured to fold the legs using a force applied to at least one of the legs. The front legs nest beside the back legs.

Abstract: A foldable chair includes a pair of front legs, a pair of rear legs, a seat and a backrest. The front legs and rear legs are hinged together to form a scissor-shape. The seat is hinged with the rear legs rotatably through a connecting piece fixed on the back of the seat. Each of the front legs has a connecting sleeve which can be slid along the front leg. The connecting sleeves are hinged to the seat. A protrusion is disposed on each front leg to stop the connecting sleeve to slide downwardly and keep the seat on unfolded position. The seat of the foldable chair can slide upwardly along the front legs.

Abstract: A foldable high chair in accordance with the present disclosure includes a juvenile seat and a seat foundation. The juvenile seat is mounted for movement on the seat foundation during folding and unfolding of the foldable high chair.

Abstract: A spring locking knob and a fixed stop at the upper ends of the front legs of a chair frame cooperate to restrict movement of a slideset joining the front legs, rear legs and seat support struts of a chair in making the chair with its cover seat more stable and resistant to an inadvertent folding closure.

Abstract: A folding chair utilizes a gear train to control a folding motion and to achieve a compact closed form. While holding a handle integrated into a backrest, the weight of the chair allows it to open and unfold automatically into an open position. The folding chair locks in place in the open position. To refold the chair, a button is depressed to release the lock and the seat is pulled toward the backrest. The gear train refolds the front and rear legs. In the compact folded position, the lightweight chair can be carried with one hand in a relaxed position, similar to an attache case. The handle is contoured so that it is possible for an adult to carry two chairs back to back in each hand.

Abstract: A spring locking knob and a fixed stop at the upper ends of the front legs of a chair frame cooperate to restrict movement of a slideset joining the front legs, rear legs and seat support struts of a chair in making the chair more stable and resistant to an inadvertent folding closure.

Abstract: A portable two-frame collapsible chair comprised of an inner and outer frame with the frames hingably joined for rotating between a first position for carrying and a second position for sitting. The chair includes a flexible seat member connected to both frames. The chair further includes a flexible backrest hingably connected to the outer frame with optional armrests hingably attached. The frames can be folded into substantially the same plane when in the first position for carrying. The position for carrying includes a variety of configurations including a backpack configuration, wherein the user uses shoulder straps to carry the chair, and a roller bag configuration wherein the chair has wheels and a pull handle.

Abstract: The present utility model relates to furniture, more particularly, to a folding chair, comprising a cushion support, a rear cushion support, a backrest support, an arm support, a cushion plate and a backrest, wherein the cushion support intersects the rear cushion support and is combined with the cushion support using a pivot; one end of the backrest support is pivotally connected with that of the cushion support, while one end of the arm support is pivotally combined with that of the rear cushion support; both ends of the backrest support and the arm support are connected pivotally, and the two ends of the cushion plate are fixed respectively on the cushion support and rear cushion support, which are pivotally combined with each other, forming a certain angle when unfolded and coming together when clamped. The present utility model is simple and easy for use, and is a multi-purpose folding chair suitable for outdoor sports and leisure activities.

Abstract: An apparatus including a support structure movable between an erected position and a collapsed position and including a threaded shaft, a first collapsible assembly having a first portion pivotally mounted on the threaded shaft, a second collapsible assembly having a second portion pivotally mounted on the threaded shaft, where at least one of the first and second portions is threadably engaged to the threaded shaft such that the first and second portions are relatively movable toward and away from each other through a rotation of the threaded shaft to move the support structure between the erected and collapsed positions.

Abstract: A foldable chair comprising a pair of front legs, a pair of rear legs, a seat and a backrest, wherein said front legs and said rear legs are hinged together rotatably to form a scissor-shape by riveting, said seat is hinged with the rear legs rotatably through a connecting piece fixed on the back of the seat, each of said front legs has a connecting sleeve which can be slid along the front leg, said connecting sleeves hinged to said seat by riveting, and a protrusion is disposed on each front leg to stop said connecting sleeve to slide downwardly and keep said seat on unfolded position. The seat of the foldable chair can slide upwardly along the front legs, till the rear legs and the front legs closed together completely, and the seat also closed completely with the rear leg and front legs, thus the occupied space of the folded chair decreased. This invention has simple structure of and is easy to manufactured, and is convenient to be stored and transported and has many utilities.

Abstract: A collapsible high chair frame including a supporting stand, a seat, a connecting device and a positioning device. The supporting stand is provided with a rear and a front supporting leg which are foldable toward each other. The seat has a base and a back which are connected pivotally to each other. The connecting device is pivotally coupling to the supporting stand and the seat. According to the configuration of this invention, the connecting device is rotatable by releasing a lock on the positioning device which is arranged between the connecting device and the seat, meanwhile, the rear supporting leg is closed up to the front supporting leg and also folded toward the base and back of the seat at the same time. The collapsible high chair can be stored with a compact frame.

Abstract: A collapsible chair is disclosed having an arcuate frame with an upward peak and a downward peak for seating of a user in the downward peak and resting of the user's legs upon the upward peak. The frame may have a pivotal connection between the peaks for collapsing the frame. A linkage is disclosed operably connected to the frame for providing legs to the chair in an extended position and for collapsing with the frame.

Abstract: A folding chair utilizes a gear train to control a folding motion and to achieve a compact closed form. While holding a handle integrated into a backrest, the weight of the chair allows it to open and unfold automatically into an open position. The folding chair locks in place in the open position. To refold the chair, a button is depressed to release the lock and the seat is pulled toward the backrest. The gear train refolds the front and rear legs. In the compact folded position, the lightweight chair can be carried with one hand in a relaxed position, similar to an attache case. The handle is contoured so that it is possible for an adult to carry two chairs back to back in each hand.

Abstract: A folding chair with wheels includes a backrest, a seat, a front leg frame and a rear leg frame pivotally connected to both sides of the seat, a plurality of wheel assemblies and a plurality of connection blocks. Each of the front leg frame and the rear leg frame comprises a groove at a side surface thereof. The wheel assembly includes a wheel, a bearing and a threaded stem screwed into the connection block. The connection block has a plurality of connection screw holes, and is screwed onto the grooves of the front leg frame and the rear leg frame by bolts. The wheel assemblies connected with the front leg frame and the rear leg frame are disposed at the external side and the internal side of the folding chair, respectively. Therefore, the wheel assemblies do not interfere with each other when the chair is folded.

Abstract: A moon chair is configured to collapse in a single movement in which a seat frame is folded while the legs approximate each other. Contemplated moon chairs particularly include those that can be collapsed without separating the seat portion form the leg portion.

Abstract: A folding chair includes front and back legs, a cushion frame, a cushion embedded in the cushion frame and has a hard board having air vents, a sound absorbing foam, and a back cushion connected with the inner edge of the front leg and includes a second hard board. The hard boards have curved surfaces form fitting with the human body. A securing hook has a bent hook to clasp with the cushion frame. An inserting section can make the cushion and a support block to be connecting together. The curved surfaces of the cushion and the back cushion are form fitting with the human body, and the sound absorbing foam can reduce the sound sent out from the air vents when sitting. When a child's center of gravity on the chair is shifted to the back of the cushion, the cushion does not tilt backwards.

Abstract: A folding linkage, especially for a folding chair, has four pivoting bars. In the open position the first bar forms one side of a triangle. The second and third bars are colinear to form a second side of the triangle and the fourth bar forms the third side of a triangle in the closed position the four bars are substantially aligned. The fourth bar is joined to the first bar by a pivot which moves along a curved path.

Abstract: This invention discloses a leisure time use easy chair, especially for use in the garden or camping. The chair includes a back, a seat, and a leg rest, with a piece of fabric stretched over the surfaces being formed by these elements, a pair of armrests, and a base with front and rear legs. The chair further includes a transverse link between the front and rear legs. This link has a sliding locking mechanism to maintain a certain incline angle of the back and the leg rest. The position of the sliding mechanism decreases the risk of harm to the user's fingers. In addition, the chair is fully collapsible. The object of the present invention is firstly to solve the problem of safety, and secondly to provide an esthetic and more comfortable easy chair.

Abstract: A furniture device includes first and second leg frames pivotally connected to a main frame, and a slide rod inserted into and movable within the second leg frame. The second leg frame includes an elongate slot having first and second ends respectively proximate to and distal from the top end of the second leg frame. A securing unit has a fastening element extending through the slot and the slide rod and fixed to the main frame, and is operable to slide the fastening element to the first and second ends of the slot in unfolded and folded states of the furniture device, respectively. A locking unit is provided to lock the slide rod against movement when the fastening element moves to the first end of the slot.

Abstract: A foldable bench includes a first leg frame having a first cross bar, a second leg frame connected pivotally to and intersecting the first leg frame and having a second cross bar, a backrest frame connected pivotally to and extending upwardly and rearwardly from a top end of the second leg frame, left and right toggle mechanisms, each being stretchable to move the leg frames to an unfolded position and being foldable to permit the leg frames to move to a folded position, an upper frame connected to a top end of the first leg frame proximate to the first cross bar and to a top end of the backrest frame, a supporting rod having a bottom insert end releasable from the second cross bar, and a flexible seat cushion assembly mounted on the upper frame and the first cross bar.

Abstract: A foldable chair assembly includes a seat frame, a backrest pivoted to the seat frame, a rear leg pivoted to the backrest, and a front leg pivoted to the rear leg and the seat frame. When the chair assembly is folded, the seat frame, the backrest, and the front and rear legs lie substantially in the same plane in such a manner that the seat frame extends within the backrest, the backrest extends within the rear leg, and the rear leg extends within the front leg.

Abstract: A folding chair having adjustable, telescoping rear legs for use on level ground and sloping terrain. The chair is continuously adjustable by a user while in a seated position, each of the telescoping rear legs housing a biasing means to mechanically assist the user in their adjustment. Easily-deployable clamps are provided to enable a user to adjust the inclination of the seating arrangement with a single hand.

Abstract: A chair includes two armrest units and a leg assembly. The leg assembly comprises a front leg unit having a pair of front legs pivoted to each other, and a rear leg unit having a pair of rear legs pivoted to each other, and being operable to be disposed in one of a folded state and an extended state. Each armrest unit includes an armrest with two opposite ends respectively pivoted to a respective one of the front legs and a respective one of the rear legs. A seat unit is connected to the armrest units. A pair of inclination-preventing members project respectively from the armrest units and abut against the front and rear leg units, respectively, when the leg assembly is disposed at the extended state.

Abstract: A collapsible chair has a front leg, a rear leg, a cross brace, a seat support rod, and a back rest, coupled together such that the chair collapses in a single movement. In especially preferred aspects, a collapsible chair comprises a connector that is slidably coupled to a leg and that further includes a first rotatable coupling to one end of a cross brace and a second rotatable coupling to one end of a seat support rod.

Abstract: A chair assembly includes a first support stand, a second support stand, a support frame, four support tubes, four connecting members, two first mounting members, two elastic members, and two second mounting members. Thus, the chair assembly can be folded and expanded easily and conveniently. In addition, the chair assembly can be supported rigidly and stably.

Abstract: A chair with rigid armrest collapses in a single movement in which the front legs of the chair approximate each other as the front legs and the rear legs pivot towards each other, and in which the armrest slidingly moves relative to the front leg.

Abstract: A foldable chair assembly includes front and rear leg rods, sleeve members sleeved slidably and respectively on the leg rods, a fabric seat connected to the sleeve members, a fabric backrest connected to the rear leg rods, and four foldable cross-frames connected pivotally to the leg rods and the sleeve members. Each of a pair of armrest rods is connected pivotally to one of the front leg rods at one end, and is connected movably to one of the rear leg rods at the other end.

Abstract: A foldable chair frame includes pivotally connected front and rear legs. The front leg has a tubular upper end portion which confines an axial insert hole and which is formed with a radial positioning hole. An extension rod has a lower end portion extending axially into the upper end portion of the front leg, and is provided with a resilient positioning protrusion which projects radially into the positioning hole for positioning the extension rod on the front leg. A seat frame has a rear part pivoted to the upper end portion of the extension rod, and a front part pivoted to the upper end portion of the rear leg. The positioning protrusion is depressible for disengaging from the positioning hole to permit retraction of the extension rod into the front leg, thereby permitting folding of the front and rear legs toward the seat frame.

Abstract: A foldable stroller includes a pair of hollow handle tubes, a pair of front legs, a pair of plungers, and a pair of actuating members. Each handle tube has a lower end with an enlarged portion. Each front leg has an upper end with a rearward enlarged part. When the handle tubes are moved from a first folded position to a first stretched position, the enlarged portion of the respective handle tube moves from a first angular position where it does not overlap with the rearward enlarged part of the respective front leg, to a second angular position where it overlaps with the rearward enlarged part. Each locking member has a hooked portion mounted on the rearward enlarged part of the respective front leg, and a rear hooking portion mounted on the enlarged portion of the respective handle tube. Each plunger has actuated and coupling ends, and a middle portion coupled to the rear hooking portion of the respective locking member. Each actuating member has actuating and linking ends.

Abstract: A foldable chair frame includes a backrest frame, a seat frame and an armrest member pivoted to the backrest frame, a front leg frame pivoted to the seat frame and the armrest member, and a rear leg frame disposed adjacent to the seat frame and pivoted to the armrest member. A rail member is mounted on the rear leg frame and is formed with an elongated guiding groove which opens toward the seat frame and which has an upper portion with a lateral locking section. A slide member projects transversely from the seat frame and extends rotatably into the guiding groove, and is movable slidably along the guiding groove to couple pivotally the seat frame and the rear leg frame. A releasable locking unit is mounted on the rail member at the upper portion of the guiding groove. The locking unit permits movement of the slide member into the locking section when unfolding the chair frame, and arrests movement of the slide member out of the locking section so as to position the chair frame in the unfolded state.

Abstract: A stroller includes a pair of side frames, each including a main side tube comprised of upper and lower tube portions pivotally mounted to each other, a rear side tube pivotally connected to the upper tube portion, and a support rod pivotally connected to the rear side tube and to the lower tube portion; a rear articulated spreader bar mechanism for connecting together the rear side tubes of the pair of side frames, the rear articulated spreader bar mechanism including a pair of rear pivoting spreader bars, each pivotally connected at one end thereof to a respective rear side tube and at an opposite end thereof to the other rear pivoting spreader bar; a front articulated spreader bar mechanism for connecting together the lower tube portions of the pair of side frames, the front articulated spreader bar mechanism including a pair of front pivoting spreader bars, each pivotally connected at one end thereof to a respective lower tube portion and at an opposite end thereof to the other front pivoting spreader bar

Abstract: A collapsable stroller for transporting a passenger includes a frame movable between a collapsed position and an operating position. The frame includes rotatably mounted wheels for providing the stroller with mobility. A passenger seat is provided for receiving the passenger. At least a portion of the passenger seat is movably mounted on the frame between a first position and a second position. A latch is mounted on the frame and the seat. The latch releasably holds the seat in the first position. The latch, seat and frame are configured such that when the seat is in the first position and the frame is moved from the operating position to the collapsed position, the latch automatically releases the seat and the seat moves to the second position.

Abstract: This invention relates to a collapsible mechanism for a stroller and in particular to one which includes an engaging seat formed with a longitudinal passage for slidably receiving the rear wheel support and two opposite lugs and a recess at a top thereof, a coupling block connected at one end with the handle support and having at the other end an angular portion adapted to receive the rear wheel support and be received in the recess of the engaging seat, a spring disposed within the semi-cylindrical chamber of the engaging seat, a stop member engaged with the rear wheel support and enclosed by the engaging seat and in contact at a top end with a bottom end of the spring end of the spring, and a crank arm pivoted on the rear wheel support at one end and on the handle support at the other.

Abstract: This invention relates to an auxiliary safety structure for a baby stroller and in particular to one which includes a rear stay connected with an engaging member, a handle connected with a seat, a screw inserted through a tube, the engaging member and the rear stay to engage with a nut, a crank arm connecting the rear stay, the handle and the seat, a block arranged within the chamber, and a spring disposed within a chamber of the engaging member and tending to push against the block, whereby the stroller will be kept in expanded condition as long as there is a baby in the stroller thereby preventing the baby from being injured by accidental collapse of the stroller.

Abstract: A foldable infant stroller comprises a frame for supporting an infant seat, the frame comprised of three U-shaped frame members which provide a push handle, a child restraint bar and a support for the front of the seat respectively, the three members being interlinked for folding and unfolding of the frame. A safety latch is provided for locking the frame in unfolded condition. The safety latch is released to allow folding of the frame by lifting up with the foot, and is thus safe against accidental release by a child stepping on the release bar.

Abstract: The present invention provides an apparatus and method to facilitate direct eye level contact between a hospital caregiver or other support personnel and a patient confined to a bed. The invention provides a lightweight yet stable chair which rapidly folds into a substantially flat unit which can be readily removed from the bedside in a medical emergency. The design of this apparatus makes it uniquely suitable for the severe constraints of a hospital environment.

Abstract: A folding chair providing a lightweight, strong and sturdy chair when unfolded and providing a compact elongated structure when folded. The folding chair invention accommodating arm chair and straddle chair configurations, each of these comprising a frame assembly having a plurality of pivotally connected strut members, and a fabric sling seat supported by the frame assembly. The frame assembly including two crossing interconnected sub assemblies, each sub assembly of four or five strut members. A pivotal stop link being used to stop the unfolding of each sub assembly, each stop link including two parallel shafts pivotally connecting a side member of one sub assembly with a side member of the other sub assembly.

Abstract: A joint for use in a collapsible chair has a main component with a stub which is connectable with the seat of the chair and is integral with a housing for the flat shorter arms of first and second two-armed levers each of which is pivotally secured to the housing by a rivet. The longer arm of the first lever is connected to the back and the longer arm of the second lever is connected to the rear foot of the chair. The shorter arms of the levers are coupled to the respective end portions of a link by two pivot members whose axes are parallel to the axes of the rivets. The levers are pivotable relative to the main component between (a) operative positions in which the chair is erected and the axis of the rivet for the first or second lever is disposed in the common plane of the two pivot members, and (b) inoperative positions in which the chair is collapsed and the longer arms of the levers are adjacent and parallel to the stub of the main component.

Abstract: The folding chair (1) comprises a rack (2) of two interlocking swivel frames (3, 4), which latter are connected centrally by means of joints. The two lateral frame sections (10, 11) of the outer swivel frame (3) and a lateral frame section (14) of the inner swivel frame (4) of the folding rack (2) comprise extensions (10a, 11a, 14a) projecting upwardly past the seat panel (8). At the ends of the extensions (10a, 11a) of the frame sections (10, 11) of the outer swivel frame (3), a semiring-shaped back (17), adapted to the shape of the seat panel (8), is mounted to be pivotable into a horizontal (17') and a vertical end position. The end of the extension (14a) of the lateral frame section (14) of the inner swivel frame (4) is displaceably guided over a swivel angle of 90.degree. by means of a slide element (21) in a circular-arc guide in or at the back (20).

Abstract: A collapsible high chair includes a pair of front legs (14) pivotally connected by pivot pins (13) to a pair of backrest holding rods (6) which hold a backrest (3), whereby an upper end portion of each front leg (14) overlaps a lower end portion of the associated backrest holding rod (6). Two rear legs (16) are pivotally connected respectively to the lower ends of the backrest holding rods (6) by pivot pins (15). The backrest holding rods (6) are pivotally connected at their intermediate portions to the rear portion of a seat (2) by pivot pins (5). Two seat support rods (20) are operatively connected between the front portion of the seat (2) and the front legs (14). When the lower ends of the backrest holding rods (6) are moved away from the front legs (14), the backrest holding rods (6), seat (2), front legs (14) and rear legs (16) assume a substantially horizontal state. In this manner, the chair can be folded for reducing its dimension in the direction of its height.

Abstract: A foldable chair of the lawn chair type has ground-engaging front and rear legs, attached to and carrying a back frame and seat frame, the back frame and seat frame being pivotally attached to a spreader rod which extends beyond the back and seat frames to bear against one of the leg members when the chair is unfolded. A contact pad mounted on the extending portion of the spreader rod is formed as an externally-contoured bushing fit over the spreader rod and adapted to engage the leg member to restrict side-to-side movement of the spreader rod, with respect to the leg member, when the chair is unfolded.

Abstract: The structure includes two flat side frames connected by crosspieces, each of which has a pair of shafts pivoted together and provided with wheels; a slide is slidable on one of these by the action of rotation of a third shaft pivoted on one of the preceding ones and controls, by a connection element, the associated rotation of the two first shafts to vary their relative angular positions.