Abstract: A compact package comprised of a collapsible seat and climbing aid for advantageous use with a tree stand. The climbing aid comprises a generally H-shaped frame with two hand grips projecting orthogonally out of plane of the frame. One rectangular housing is attached to each vertical upright member of the frame and locking screws engage portions of a supporting cable to adjust the size of loop for encircling an element to be climbed. A collapsible seat has an L-shaped frame sized to fit within the vertical uprights of the climbing aid and a securing nut positions a pivotable frame of the collapsible seat in either a first stored position or a second erect position. The securing nut also fastens the climbing aid to the tree stand when the seat is in the stored position.

Abstract: The inflatable clothing of the present invention includes a garment having a manually inflatable air capsule. The air capsule may be pivotally mounted to the back panel of the garment so that the air capsule may be pivoted between a raised position, wherein the capsule may be releasably secured by a fastener so as to remain in the raised position, and a lowered position disposed adjacent the buttocks of a user wearing the garment.

Abstract: A compact seat cushion built to be easily carried by a shoulder strap or built-in handle which has a padded top for sitting on and a bottom that is rugged and waterproof. The seat cushion unzips to separate the top and bottom into two separate parts. The leg-warmer/protector envelope attached to the bottom, unfolds from inside. The padded top is attached to the top of the leg-warmer/protector envelope. The leg-warmer/protector envelope has a side zipper to allow ease of ingress and egress and includes an extension zipper to lengthen the tube as desired. A built-in belt at the open end top of the leg-warmer/protector envelope allows a user to cinch it around his waist. The padded top which is fastened to the top of the open end of the envelope inserts into the envelope and is suspended at a level that allows it to be easily placed below the user's seat inside the leg-warmer/protector envelope.

Abstract: A transportable seat system that is lightweight and foldable into a compact transporting position. The transportable seat system includes a lower frame, an upper frame pivotally attached about the lower frame, a bar member extending within the frames, a cover attached to the bar member and positioned about portions of the frames, and a strap attached to the frames for allowing convenient transporting of the same. An upper portion of the lower frame is preferably angled forwardly to assist in the transfer of the weight of a user to a central position about the lower frame.

Abstract: A wearable seating system that is suitable for a sportsman's use. A body garment is provided that includes an attached, integrated seat, with support base, that may be easily deployed in the field with minimal manipulation by the user. The integrated seat, when deployed, may be easily stowed upon garment for transport, with minimal manipulation by the user, and causing minimal obstruction to the user while so stowed.

Abstract: A foldable chair generally comprising a frame, an upper body support, a lower body support, and a frame support. The frame preferably comprises a plurality of tubes that are connected to form the general outline of a rectangle. The upper body support is connected to the frame and also joins the lower body support through a central web of material. The frame support is pivotally connected to the upper tube of the frame. Further provided is a pair of adjustable shoulder straps that extend from the upper tube of the frame to the lower tube of the frame which permit the user to easily carry the folded chair on his or her back. When the chair is not needed for seating, the user can fold the frame support and lower body support inwardly toward the upper body support. Once secured in the folded configuration with a retaining strap, the chair can be carried in similar fashion as a backpack.

Abstract: A stool having an elongated post with a top and a bottom along a generally longitudinal axis. A first threaded member is disposed at the top of the post and a second threaded member is disposed intermediate the top and bottom. The second threaded member is disposed about an axis substantially transverse to the axis of the first threaded member. A seat member having a third threaded member in or on the bottom thereof is adapted to selectively mate with the first and second threaded members so that the seat member has an operative position when the third threaded is engaged with the first threaded member and a storage position when the third threaded member is engaged with the second threaded member.

Abstract: A portable stool includes a seat and a single variable length support leg supporting the seat. The support leg can be adjusted to and maintained at a selected length so that the seat is a selected height above the ground, desired by the user, when a normal crouching or seated weight is exerted on the seat by the user. The support leg also includes spring loaded telescoping sections for maintaining a lower end of the support leg in contact with the ground at a selected location when there is an upward or downward movement of the seat from the selected height caused by an upward or downward movement of the user so that the portable stool remains properly positioned beneath the user during such upward and downward movements.

Abstract: A hunting seat including a planar cushion provided with a transverse anchor pad is described. The anchor pad it substantially thicker than the cushion so that it secures the position of a user and provides leveling on hilly terrain. Preferably, the anchor pad is detachable.

Abstract: An inflatable portable seat cushion for use when seated at various sporting events, winter activities, summer activities, and or any other occasion that might involve being seated for an undetermined amount of time and where seating is a hard and uncomfortable surface. An inflatable portable seat cushion attached to a pouch that can be located around a persons waist use to store the seat portion when not in use. The seat cushion may have a slip cover that covers the inflatable portion of the cushion that may be used to place personalized messages or advertising. When left deflated the seat cushion may be used to protect clothing from wet seating arrangements such as ski lifts, boating, or any other seating area that might become wet or damp. Located inside the inflatable portion of the seat cushion may be flexible heating elements that are operated by the use of common batteries for use in cold weather conditions.

Abstract: A combination backpack and stool with a variable height seat and a grounding mechanism for limiting lateral movement of a sole central column. The lightweight structure has straps for carrying and an integral bag for storage.

Abstract: A portable work stool includes a seat that is secured to and carried by the user adjacent the user's posterior when standing and moving about and a single variable length support leg supporting the seat. The support leg can be adjusted to and maintained at a selected length so that the seat is a selected height above the ground, desired by the user, when a normal crouching or seated weight is exerted on the seat by the user. The support leg also includes a device, such as spring loaded telescoping sections, for maintaining a lower end of the support leg in contact with the ground at a selected location when there is an upward or downward movement of the seat from the selected height caused by an upward or downward movement of the user so that the portable stool remains properly positioned beneath the user during such upward and downward movements.

Abstract: A ground-based seat, including a back structure, a seat structure, seat structure support, a foot structure, and foot structure support is described. The back structure includes a top portion, a bottom portion, a front face, and a rear face. The seat structure includes a front portion, a rear portion, a top face and a bottom face, the rear portion of the seat structure being pivotally connected to the bottom portion of the back structure to allow relative rotation of the two structures. The seat structure support extends between the back structure and the seat structure and is positionable for preventing rotation of the seat structure downward and away from the back structure when a person is seated in the seat. The seat structure support may also be configured to allow the seat structure to be positioned substantially parallel to the back structure such that the bottom face of the seat structure lies adjacent the rear face of the back structure.

Abstract: A portable seat and includes a seat and a single adjustable length leg which can be folded against the seat. The leg, when unfolded, lies at an angle of about 135.degree. with respect to the bottom of the seat. The angle between the leg and the bottom of the seat is selected such that the top of the seat will be horizontal when the bottom of the seat is placed on the top of the bumper of a vehicle. The seat is ideally suited for golfers, hunters and other sportspersons who need to change shoes when leaving and returning to the vehicle. The seat may also be used at "tailgate" parties by persons desiring to sit during the party. When folded, the seat can be conveniently stored in the vehicle's trunk or other storage area. The leg may include a foot rest support for the user's feet to more conveniently change shoes or for comfort.

Abstract: A seat, which is rectangular shaped (1) pivots on a round plastic member (2) which is fixed to a metal tube (3). A plastic retainer tab (4) when depressed with the fingers, allows the seat to slide along the aluminum extrusion extentions, until the seat assembly is clear from the round plastic member (2). Installing the seat, on the storage platform in the form of a unitary cross-bar (5) is accomplished by engaging the platform with the end of the seat aluminum-extrusion, and sliding the seat to the middle of the seat until the plastic retainer (4) snaps into place. A large disc assembly (6) is attached to the lower end of the metal tube (3) with a retainer pin (7) which engages the disc assembly (6) to the metal tube (3) in one of several selective positions. Storage of the disc assembly (6) to the storage platform (5) is accomplished by removing the retainer pin (7) then separating it from the metal tube (3).

Abstract: A garment for use by a wearer when seated comprises a waist band with a rectangular pad depending downwardly from the rear of the waist band having a width to extend around the rear of the wearer and a depth to extend downwardly beyond the crotch of the wearer. On an inner or front surface of the pad is provided a utility pocket with a bottom edge of the pocket at the bottom edge of the pad and a pocket arranged centrally with a top edge of the pocket below the crotch of the wearer so that the pocket is presented forwardly between the legs of the wearer when the wearer is seated. On the outside of the pad is provided a transparent plastic cover defining a pocket for receiving printed information such as a sports logo with the upper edge of the pocket at the waist band so that the pocket is closed by pulling the waist band around the waist of the wearer.

Abstract: A vest garment with pivotable seat member is provided. The seat member is connected to the interior aspect of the dorsal member of the vest garment and is pivotable between positions for use and for stowing away. Straps support the seat member from the vest to create an effective chair when the seat member is lowered for use, and the straps are adjustable so that the angular orientation of the seat member with respect to the vest can be adjusted for comfort to the user. When not in use, the seat member is swung back inside the vest and stowed against the dorsal member. The dorsal portion of the vest fabric and the seat member are reinforced with rigid edges for seating comfort and structural support.

Abstract: An outdoor living apparatus includes: a shell having a mattress bag portion and a sleeping bag portion superimposed with each other; an inflatable mattress which may be normally embedded in the mattress bag portion of the shell to serve as a bed mattress adapted to be slept by a user sleeping in the sleeping bag portion superimposed on the mattress bag portion when the shell and the mattress are flattened, or may be removed from the mattress bag portion of the shell to serve as a swimming or beach mattress or as a life buoy in case of ship accidents; and a pair of convertible setting belts normally fastened to two opposite end portions of the shell to suspend the shell and the inflatable mattress filled in the shell between two fixtures or trees to be a hammock, or the two setting belts converted to be fastened to a right and a left side of a chair as folded from the hammock with flattened shell and mattress for seating purpose.

Abstract: A combination canoe carrier and camp chair. The carrier supports an inverted canoe on a person's back and is also capable of being converted to a folding camp chair. The chair includes two rectangular frames pivotally connected intermediate their ends. Webbing is secured to the frame to provide seat and back portions and the frames are interconnected by straps to provide a chair configuration. In the canoe carrier mode a web interconnects upper ends of the frames to support the thwart of the inverted canoe. Suitable shoulder straps and a hip belt are also attached to the carrier.

Abstract: A support apparatus having a support member; and an assembly for mounting the support member on a first work object for movement between a first attitude, in which the support member is disposed in a stored condition, and a second attitude, in which the support member is disposed in a condition for use in supporting a second work object.

Abstract: The convertible chair and load carrier device comprises a dorsal member, a harness for attaching the dorsal member to the user's back, a load support member and a peg-and-groove system for removably mounting the load support member on the dorsal member in either a first position to form a load carrier device or a second position to form a chair. In the first position, the load support member can be turned upside down to form a chair carrier device usable to transport a child. The peg-and-groove system comprises, on each side, first and second pegs formed on the load support member and first, second and third grooves formed on the dorsal member. The first and second grooves each have a bottom face provided with a generally rectangular protuberance situated centrally of the groove while the first peg is formed of two spaced apart peg elements generally half-moon shaped in cross section.

Abstract: A portable folding device for providing comfort for people engaged in outdoor activities is disclosed. The device comprises a padded cushion having a lower section, an upper section, and a middle section therebetween. Included is an elongated cord in removable communication with a plurality of eyelets disposed on an upper edge of the upper section. A plurality of ties in removable communication with the eyelets and a plurality of rings oriented on an outer face of the middle section. Further included is a belt in cooperative relationship for coupling the device to the waist of the outdoorsman. A hood is disposed on an outside surface of the upper section and has a downwardly disposed slit. A plurality of sleeves are oriented on an outer surface and an inner surface of the middle section of the cushion and the cushion has an outer skin adapted to resist water. The outer skin has camouflage markings for appearing like foliage. The cushion has a fiber material filing an interior chamber therein.

Abstract: A pair of straps that can be attached to a variety of beach chairs and are designed so that the straps need no adjusting buckles to fit people of different sizes without sliding off their shoulders. The straps are attached, and will hang, behind the chair when the chair is used for sitting. The straps cross over each other in a V-shape or an X-shape and will enable a person to carry the chair on his back, therefore leaving his hands free.

Abstract: A back rest for use in resting against a tree comprising a pad of a generally trapezoidal configuration with a front face and a rear face and formed of a resilient elastomeric material, the pad being wider at its top edge than its bottom edge, the pad having a plurality of apertures in rows and columns throughout the majority of its extent, a projection extending rearwardly from the rear face of the pad adjacent to its top edge, the projection having a concave surface adapted to be received by the convex surface of a tree against which the pad is positioned and a plurality of belt loops formed adjacent to the top edge of the device with the holes of the loops in axially alignment for being supported on the belt of a user.

Abstract: An outdoor seat cushion includes a first enlarged curved cushion piece connected to a second enlarged cushion piece in such a manner that a portion of reduced thickness is formed between the first and second pieces.

Abstract: A new and improved adjustable leg chair includes a seat assembly and a leg assembly supporting the seat assembly. The leg assembly includes a seat support member supporting the seat assembly and leg members supporting the seat support member. The leg assembly also includes spike members connected to the leg members. The spike members project from the leg members in a direction opposite of the seat support member. The spike members are capable of penetrating into a sloped ground surface. The leg members may include two vertical portions connected to the seat support member and a transverse member connected between the two vertical portions. The vertical portions and the transverse member are in the form of a unified, integrated U-shaped leg member. The spike members are supported by and project from the transverse members. A swivel assembly is located between the seat assembly and the leg assembly. The swivel assembly supports the seat assembly and the swivel assembly is supported by the leg assembly.

Abstract: A waist pack adapted to be worn about the waist of a human which includes at least one interior compartment. Connecting to the waist pack by means of a connecting strap is a seat cushion. The connecting strap and the seat cushion are locatable in a stowage position within an interior compartment of the waist pack in a first embodiment. In a second embodiment, the seat cushion is rolled-up onto the connecting strap and secured. The connecting strap and the seat cushion are movable to an extended position, the seat cushion being inflatable and then to be used by being positioned under the buttocks of the human when in a sitting position.

Abstract: A portable seat is constructed of a thin, lightweight, shell of Goretex material and then lined with Thinsulate material or some similar heat retaining fabric. The waterproof seat is attachable by VELCRO fabric fasteners or a belt to the seat portion of a user's trousers, and is particularly useful on ski lifts and the like. When not being used, the seat can be folded and stored in a small pouch. A modified embodiment of the seat employs an inflatable cushion with its comfort being adjustable through the use of further inflatable coiled springs positioned within the main cushion. Both the main seat cushion and each of the inflatable springs may be independently inflated to adjust comfort.

Abstract: An automatically retractable seat cover for use by skiers and sports fans who use cold and/or wet seats is described. A plurality of foam pads are enclosed in a flexible cover and are freely interconnected by at least one elastic cord passing through opposed faces thereof which hold the pads in juxtaposition in a closed position at the user's waist and which can be extended by pulling the lowermost pad downwardly so that the pads form a lay flat seat upon which the user can sit, with his own weight holding the seat and cords in the extended position. Upon standing the cords automatically retract the seat to the folded position.

Abstract: A single-legged chair comprising a support post and a seat mounted on the support post at a predetermined position thereof so as to constitute a leg portion by a lower part of the support post below the seat, the general plane of the seat lying at an angle of 70.degree. to 85.degree. with respect to the support post at least when the chair is in use. In use, the seat lies virtually horizontally as the leg portion stands on the ground or floor in an inclined posture.

Abstract: A cushioning device which is quickly and easily attachable/detachable to backpacks of various sizes to, thusly, substantially reduce discomfort and abrasion from objects within a backpack which otherwise would rub against the back of the user of the backpack. The device is also functional as an upper and lower body cushion for use upon the ground, chairs and the like.

Abstract: A seat insert insertable within the existing seat of a vehicle for maintaining a crew member of the vehicle in a forward posture during high G acceleration. An elongated head support member is provided for supporting the crew member's head during a forward leaning posture. A back plate assembly including at least one back plate is connected to the head support member for supporting the spine in its natural curvature. Means being connected to the back plate assembly are provided for pivoting the back plate assembly forward relative to the seat of the vehicle. Means are provided for transfering any G-induced weight from the spine to the back plate assembly and ultimately to the existing seat of the vehicle. The head support member is restrained in such a manner so as to maintain the crew member's head in an "eyes up" attitude during a forward lean.

Abstract: A cushion is inflatable, and includes straps to attach the cushion to a person to cover the buttocks of the person, so the cushion stays on the person while the person is standing, and is in place for sitting. The cushion has waist straps at the upper portion of the cushion; and, the lower portion of the cushion is bifurcated with two leg portions to cover the upper portion of the thighs. The upper portion of the cushion has a slot to receive a bumpersticker that is visible while the person is wearing the cushion. The cushion is made from plastic sheet, and the sheet towards the wearer has a flocked surface for improved comfort.

Abstract: A foldable seat device having diagonal side legs for support of a flexible sheet seat along its rearward and forward portions; and although legs extending from the rearward portion of the seat are conventionally continuous to their feet, the legs extending from the forward portion of the seat are of two discrete and non-connected portions.Of those legs, the adjacent ends of the lower rearward leg portion, and of the upper forward leg portion, are pivotally connected to the other legs at spaced points therealong; and those unconnected leg portions are pivotally movable independently of one another, permitting a seat-open condition of the seat even though the rear seat-feet may be then retracted to permit a support of the seat in a partially folded condition which permits a use of the seat while the device is leaning against a tree for user comfort.

Abstract: A light-weight, low-profile seat cushion is attached to a body engaging sling. The cushion includes a foam base having a dished out central portion, and an envelope, partially filled with fluid, positioned over the dished out portion of the base. In the preferred embodiment, a self-supporting back support is attached to the rear of the seat cushion.

Abstract: Knee pads which are to be worn while a person is working on a surface in a kneeling position have a first section provided with a first portion to be attached to a lower leg and a knee seat to accommodate the knee cap and the upper portion of the tibia, a second section connected to the first section and having a seat for a buttock and the adjacent portion of the upper leg and a support engageable with the surface when the user is kneeling with body weight transferred to the surface by the knee pad rather than through the knee joint.

Abstract: A baby carrier device which is convertible to function as either a baby stroller or as a baby backpack.

Abstract: A lower back support comprising two elongated cylindrical tubular members composed of polyurethane foam and held in side-by-side relation in proper position against a user's back by an elongated flexible strap support which permits a limited rolling action of the members against the back. The strap extends loosely through one member, and then loosely through the other from opposite ends, then forming a loop of adjustable size passing under the user's arms and around the back of the neck. VELCRO-type fabric strips on the strap form a connection of adjustable length.

Abstract: A portable knockdown-type stool for use by a spectator of a sporting event features a seat and frame normally supported in elevated relation to the ground by a single, readily detachable leg or post and having a detachable, stabilizing handle or bar disposed in laterally offset relation to the seat and adjustable between relatively upwardly extended, or downwardly retracted position with respect to the seat. In its retracted position, the handle provides a convenient mean for carrying the stool from place to place and when extended it provides either a back rest or prop for a person seated on the stool.

Abstract: A supporting device for a person, said device having a posterior supporting face (2) and thigh supporting members (5,6) designed to engage a front portion of the person's respective thighs. A leg (3) depends from the posterior supporting face (2) and is suitably, through a transition member (12), connected to a leg base (13) being provided with casters (14). An anti-tilting device (15) may be provided at the rear end of the base (13). Foot engaging projection (16) may be present to contact a floor upon downward pressure thereon. The supporting device provides a stable 3-points support for a person assuming a standing-like sitting position.

Abstract: An orthopedic appliance, such as a crutch, adapted to support the body of an injured or handicapped person without the use of his arms and hands. The crutch is adapted to be readily movable with the person and comprises a principal frame assembly having a lower portion adapted to engage and rest upon a travelled surface in position of use, a seat assembly disposed at the other end of the frame and forming body support means for a person. The crutch has at least one handle extending radially outwardly from said frame and spaced downwardly apart from said seat assembly, and it is positioned relative to said frame so as to be able to be grasped by said person while said person is supported by said seat. Preferably the appliance also includes a foot support peg assembly near the bottom, a clip or the like for securing the ankle to the bottom of the frame and a height adjustment assembly.

Abstract: An insulated and waterproof seating pad for suspension from the rear part of a belt worn by the user. The pad comprises a single layer of foam material stitched along the center between the side edges to provide a fold line, covered by top and bottom layers of waterproof fabric stitched around the edges only. A first pair of flexible strips are attached to the top edge and a second pair to the bottom edge of the pad. The first pair of strips may be looped back upon themselves and the end portions secured to medial portions, preferably by making a portion of the strips from Velcro hook and another portion of Velcro pile material, providing closed loops to pass around the user's belt from which the seating pad is thus suspended. The second pair of strips are releasably attachable to portions of the first pair, also preferably by being of Velcro material, for moving the pad between folded (walking) and unfolded (seated) positions.

Abstract: A mobility aid for use in conjunction with crutches or like, by a legless person or a person afflicted with paraplegia for step-like ambulation, the aid having a foot with a convex lower surface.

Abstract: A stool which is fully collapsible and adjustable to four different positions. It is particularly suitable for the sportsman, such as the hunter and fisherman. While spot hunting deer it will give the same high view as if standing and, at the same time, support the backside and legs and lower back of the sportsman. The fisherman can use it while "spinning" in a stream without sinking in the creek's soft bottom in view of a platform shaped base. It is also useful around the house to support the housewife while ironing, doing dishes or working around a work bench. It may be carried by a strap around the shoulder or by a belt.

Abstract: Disclosed is a standing work seat in which the support column and the base are rigidly attached together, the support column is inherently rotatable, the seat is inclinable in the seat direction. The seat exhibits a rear edge drawn up to the user's iliac crest, a rounded front edge and a slip-inhibiting configuration of the seat surface. The standing work seat permits optimum absorption of a user's body load in confined work stations.

Abstract: A horizontal completely and freely rotatable seat about a central vertical axis, which seat has a central cylindrical socket portion having a lower larger bearing and an upper smaller bearing for a correspondingly shaped hollow bell-shaped plug with depending leg means for supporting said seat for free rotation about the plug. The bearings may be of antifriction plastic and anchored to the socket in the seat. The seat may comprise a hollow torus or donut-shaped container with a correspondingly shaped cover removably held on said container by a pair of diametrically spaced slip-cords. The slip-cords also may be used for holding the removable plug and leg means and for attaching a shoulder strap and/or belt clip for carrying the seat in its knocked-down or collapsed condition. The plug and leg means may comprise collapsible tripod legs with removable, replaceable and/or telescopic feet to best fit the surface upon which they are to rest and support the seat.

Abstract: A passive seatbelt system which includes a runner piece which anchors the upper end of a passenger restraining belt which is guided by a guide rail fastened to a vehicle body and which is moved so that the belt is automatically fastened or removed from a passenger. The guide rail includes a base part which is fastened to the vehicle body and a pair of guide arms which hold the runner piece in a space between the guide arms and the base part whereby the runner piece is securely held during a vehicular emergency.

Abstract: A portable and collapsible seat which can be suspended on a flexible strap from the belt of a user including a rectangular base which ultimately constitutes the seat, a pair of spaced parallel flanges extending outwardly perpendicular to the base along the long edges of the base, a leg somewhat longer than the base itself pivotally and slidably connected to the base, the leg adapted to lie against the base in the collapsed condition of the seat and extending at right angles to the base or seat when the same is in the operable condition, a V-shaped link having a flattened portion adjacent its center and being curved at its ends, the flattened portion of the link being received in a hole in the leg between the ends of the leg, the curved ends of the link being received in openings in the flanges adjacent one end of the base, a clamp being provided at this one end of the base and formed by extensions of the flanges for holding the leg in the collapsed condition of the seat, a clip pivotally connected to the leg

Abstract: An apparatus for supporting the weight of an individual's body includes a unit for attachment to each leg. Each unit includes a lower bar having an upper section and lower section which is longitudinally extendable from the upper section. The upper section is fitted with straps to permit attachment of the lower bar to the lower leg of the individual. An upper bar is hingeably connected to the upper end of the lower bar and a brace member, pivotable from the upper bar, is selectively positionable between the upper bar and the lower section of the lower bar. As the individual crouches into a rest position, the upper leg of the individual engages the upper bar and by engaging the brace into the lower section of the lower bar extends the lower section of the lower bar to support the unit, and the weight of the individual, from the ground.

Abstract: A collapsible chair adapted to be carried by a user wherein the chair comprises a seat which is pivotally attached to a support post which, in turn, is pivotally attached to a disk-shaped base such that the seat and base may be pivoted with respect to the post from an open, usable position to a collapsed position. The post includes a first threaded member rotatably received within a threaded bore of a second member such that the height of the seat may be adjusted with respect to the base as well as permit the user, while seated on the chair, to rotate with respect to the base. Locking pins are provided to facilitate the secure engagement of the seat and base, respectively, with the opposite ends of the support post during use and when the chair is in a collapsed position.