Abstract: A mattress is described, comprising an ergonomic layer made of foam material and a breathable layer made of three-dimensional polymeric material. The ergonomic layer and the breathable layer are mutually coupled. The breathable layer is individually wrapped in a casing made of a three-dimensional breathable fabric. The combination between the breathable layer and the respective casing, which is also manufactured with a three-dimensional breathable type of material, allows to obtain the maximum breathable characteristics for the mattress.

Abstract: A multi-needle quilting machine is provided with a tape or ribbon guide that is operated by a method by which a narrow strip is fed against a facing layer of a wide multi-layered material as it is fed into the quilting machine. In the quilting machine, series of chain stitches are sewn, at least one of which joins the tape and layers of the multi-layered material together with the same thread in a quilting process, thereby applying the tape to the quilted product in a single quilting operation without the need for a post-quilting tape application step. The tape may form a decorative strip or have unsewn sections that serve as handles for a mattress when the quilted product is formed into a mattress cover.

Abstract: A mattress structure contains: an elastic mattress. The elastic mattress includes a main body, two elongated extensions extending along two peripheral sides of the main body, and an outer segment formed on one end thereof to correspond to user's feet. The elastic mattress is made of plural first plastic wires which are solid and are irregularly winded together, a connection portion of at least two of the plural first plastic wires is melted, and a disconnection portion of the at least two of the plural first plastic wires includes plural gaps formed therein. The elastic mattress also includes two support areas arranged below the two elongated extensions, and each support areas has plural second plastic wires winded therein, wherein a density of the plural second plastic wires is greater than those of the other positions of the elastic mattress besides the two support areas.

Abstract: A mattress (22) having a core structure (8) wherein side walls (15) are compressed inward and held in place using a preferably non-woven strip of fabric (21) or similar non-elastic or non-stretchable material that is wrapped around the side walls.

Abstract: A side rail assembly for supporting an edge of a mattress includes a layer of a polyurethane foam comprising an open cellular structure, wherein the open cellular structure comprises about 10 to about 40 cells per inch, a hardness of about 35 pounds-force to about 100 pounds-force, and a density of about 1.2 pounds per cubic foot to about 2.0 pounds per cubic foot, wherein the layer is configured to be disposed about a perimeter of an inner core of the mattress and is configured to permit the flow of fluid from and to the inner core through the layer.

Abstract: A mattress (22) having a foam core (8) completely extends to the perimeter edges of the mattress wherein side walls (15) of the foam core are compressed inward and held in place using a preferably non-woven strip of fabric (21) or similar non-elastic or non-stretchable material that is wrapped around the side walls of the foam core. A method of wrapping the foam core allows corners (5) of the foam core to be formed under the inward pressure of the non-woven fabric, thereby creating a strong perimeter for the mattress that prevents outward pressure against the sidewalls created by the downward pressure of an individual lying on the mattress from flattening of the mattress by providing more upward pushback against the individual. An optional layer of micro-coil springs (2a) may be located within the foam core to provide more buoyancy and springiness in the mattress.

Abstract: An elevation structure system possesses anti-decubitus ulcer characteristics, and may cooperate with a mattress overlay also having anti-decubitus ulcer capabilities as part of a mattress overlay system, in which multiple elongate, positionally adjustable, relatively moveable risers are configured for selective placement in conditions of transverse, subposed, under engagement with the sides of an overlay to create substantially non-inclined, elevated, depth-supplemented regions at locations along the length of the overlay. The evelation structure and overlay may each include a dynamic-response core expanse formed of an open-cell, compressible viscoelastic foam coated with elastomeric, moisture- and gas-flow-managing, differential-thickness coating structure load-transmissively bonded to the entirety of the outside of said core expanse to function as a dynamically-responsive unit therewith.

Abstract: A mattress comprises an upper surface and a lower surface opposite the upper surface. The mattress further includes first and second opposing side surfaces extending between the upper surface and the lower surface and third and fourth opposing side surfaces extending between the upper surface and the lower surface and between the first and second opposing side surfaces. A core section is formed by the upper and lower surfaces and first and second opposing core section side surfaces and third and fourth opposing core section side surfaces and an extension extends outwardly from a side surface of the core section. The extension is fixedly connected to or integral with the core section and the extension provides the upper surface with a greater area than the lower surface. The extension is capable of supporting a user without a support structure being positioned below the extension.

Abstract: Cushioning constructions for mattresses or chair cushions are given comfort features for severely immobilized patients. Otherwise, the problem is that, sit or lie still long enough and awful sores may develop. The cushioning constructions hereof are formed of plural or multiple layers of resilient materials of dissimilar softness/firmness and, moreover, these layers are partitioned into multiple zones across the layers of likewise dissimilar softness/firmness. Such features include soft sinking spots for the pelvic area in mattresses or for the counterpart ischium support zone in seat cushions. In distinction, firm and soft juxtapositions are provided for the upper thigh region in mattresses or in the counterpart femoral support zone in seat cushions. Conversely, firm lateral rails for mattresses or counterpart lateral wings for cushions of chair backs are provided where the concern is with Huntingdon's disease patients, who are largely immobile but periodically convulse at times.

Abstract: A mattress assembly having a composite encasement surrounding a coil spring unit in which the composite encasement comprises alternating layers of canvas and foam, and in which a side border assembly of quilted material is attached to the exterior walls of the composite encasement by means of multiple, spaced, lines of stitching extending through the alternating layers of canvas and foam to firmly affix the side border assembly to the encasement.

Abstract: A support surface assembly for a sleeping person that comprises a rigid frame with an upper edge for supporting an air-permeable layer and an air-permeable layer that is fixedly joined to the upper edge in a desired tension, such that the upper edge is entirely covered by the outer perimeter of the air-permeable layer. The air-permeable layer comprises a lattice grid structure such as a mesh material, a netting or a web-like material. The outer perimeter of the air-permeable layer is joined to the frame at the side wall or at the bottom wall of the frame.

Abstract: A patient support for supporting a patient includes a plurality of cushioning layers arranged such that their supporting surfaces when unloaded are generally arranged in a plane, and with each cushioning layer interlocked with each adjacent cushioning layer wherein each cushioning layer provides lateral and longitudinal support to each of its adjacent cushion layer.

Abstract: A specialty support surface for a variable width bed that can easily change its width from a wide bariatric mattress to a standard width so it can fit through a standard hospital door frame. The support surface can be placed on any bariatric bed frame that is designed to reduce its width to fit through a standard door. The support surface has the normal traverse air cells (used to reduce or relieve pressure). In addition, transverse air cells have independently controlled compartments on their ends. By inflating or deflating the controlled compartments, the length of the transverse air cells can be varied. These controllable compartments are controlled through an electronic controller by simply pressing a keypad on its touch panel. The electronic controller is used to control air pressure to the various compartments of the specialty support surface. The mattress replacement can be single or multi zone.

Abstract: A mattress core including an array of strings of pocket springs extending in parallel across the mattress core; and a fastener coupling the array of strings of pocket springs together, wherein said array of strings of pocket springs includes single strings of pocket springs and double strings of pocket springs, each double string of said double strings of pocket springs including a superior string of pocket springs and an inferior string of pocket springs.

Abstract: A mattress expander used to increase a width of a mattress, the mattress expander including a top pad having a width greater than the mattress to define overhanging portions on either side of the mattress, a pair of side members, under the overhanging portions; and, a mattress extending from one side portion and attachable to the other side portion to hold the side members under respective overhanging portions defining a mattress receiving channel there between.

Abstract: A foam support, such as a mattress or cushion, with additional edge supports. The edge supports may be in the form of a support member that may include firmer foam than the body of the mattress. The support member may include a top portion and a bottom portion. The top portion of the support member may have a larger surface area than the bottom portion of the support member.

Abstract: Stepped-edge and side-support members, systems, assemblies, and related methods for an innerspring assembly or other core are disclosed. In one embodiment, an innerspring assembly or core is provided having an interior area of a first height surrounded by one or more exterior, perimeter area(s) of shorter height(s) to provide a stepped-edge innerspring assembly or core. At least a portion of side-support members are placed onto at least a portion of the top surface of the perimeter area to provide edge-support for the innerspring assembly or core. In this manner, a greater portion of the side-support members can be disposed in the sleeping area of the innerspring assembly or core since the underlying perimeter area provides spring support to the side-support members. Further, this support can assist in retention and/or recovery of the shape of the side-support members to further prevent or reduce compression set of the side-support members.

Abstract: A mattress is disclosed comprising a flexible frame for bearing uniaxial compressive stress from a human body pressed onto the frame. The frame traverses the breadth and length of the mattress in evenly-spaced repeating patterns which defines hollow recesses filled with materials like silicone gel, memory foam, coils, and springs. The flexible frame in some embodiments, has a higher compressive strength than does the traditional material(s) filled the recesses defined by the frame. The indentation force deflection (IFD) rating varies slightly across small, repeating regions the surface of the mattress. These regions provide lumbar, thoracic, and pelvic support to a user. A user may move about on the mattress during the night to adjust the areas of the small regions pressing most firmly against the body, selectively adjusting both the position of the body and the pressure points of the mattress to maximize comfort.

Abstract: An infant mattress fits safely in a crib without any gap between the mattress and the walls or bars of the crib. A ring of memory foam surrounds the supporting foam layers of the mattress and forms a snug fit with the vertical bars of the crib regardless of whether the dimensions of the particular crib or mattress vary from their standard sizes. The memory foam ring intentionally renders the infant mattress somewhat larger than the inner dimensions of the crib. The ring compresses when the mattress is placed in a crib in which opposing side bars are separated by a distance that is smaller than the mattress width. The ring is formed by pouring foam into a rectangular mold around the supporting foam layers. Where the mattress includes pocket coils on the supporting foam layers, the ring of memory foam conforms to the outer row of pocket coils.

Abstract: A mechanism for securing a mattress on an automated bed is provided. More particularly, the invention relates to a mattress-retention mechanism for preventing a mattress from moving towards the foot end of a bed during articulation. The mattress-retention mechanism includes a mattress-support structure adapted to support a corner of a mattress, with a portion of the mattress-support structure having a curved interior surface. The mattress-support mechanism also includes a foundation attachment surface for removably attaching the mattress-retention mechanism to the top of a mattress foundation, where the foundation attachment surface is perpendicular to the curved interior surface. The mechanism may include a bedding aperture on the side of the mattress-support structure to accommodate bedding inserted through the bedding aperture. Further, the mechanism may include a side attachment surface for removably attaching the mattress-retention mechanism to a vertical side of the mattress foundation.

Abstract: A mattress encasement with improved bed bug protection includes an encasement body configured to cover a mattress and a zipper disposed at an opening in the encasement body and movable between an open condition permitting insertion and removal of the mattress and a closed condition preventing bed bugs from traversing the zipper. The zipper has a zipper head and a zipper pull pivotable on the zipper head. A clasp is at least partly fixed to the encasement body. A hook-and-loop fastener is associated with the encasement body and the clasp for locking the zipper pull to the clasp with the zipper in the closed condition to prevent movement of the zipper head and opening of the zipper.

Abstract: A method and structure for furnishing pressure-evenized, dynamic-reaction anatomical support. The method includes (a) supporting the anatomy with a 100% open cell viscoelastic foam, and (b) within the foam, reacting to both static and dynamic, anatomically-produced foam indentations to expand and contract cell-openness size, whereby deeper/sharper indentations result in greater-size cell-openness. Such reacting includes laterally stretching and flowing regions of the foam adjacent such an indentation The overlay structure features (1) a dynamic-response core expanse formed of a 100% open-cell, compressible and flowable, polyurethane, viscoelastic foam possessing a compressed, relaxed-state volume, and (2) an elastomeric, moisture- and gas-flow-managing coating, load-transmissively, bonded to the entirety of the core expanse's outside surface to function as a dynamically-responsive unit with the expanse.

Abstract: A mattress has a frame, which is formed from an elastic material and laterally delimits an interior. Arranged in the interior are at least two elastic spacer textiles, which are each releasable from the frame and from one another. The mattress has a high degree of reclining comfort and, because of the modular construction, can be cleaned in a conventional washing machine.

Abstract: Cushioning elements having a first plurality of parallel buckling walls and a second plurality of parallel buckling walls each comprising an elastomeric material. At least some of the buckling walls of the second plurality intersect and interconnect with at least some of the buckling walls of the first plurality. The elastomeric material comprises an elastomeric polymer and a plasticizer, and a ratio of a weight of the plasticizer to a weight of the elastomeric polymer is from about 0.1 to about 2.2. A height of the cushioning element is at least about 5 inches (12.7 cm). A mattress includes a core structure including buckling walls and a flexible material formed over the core structure.

Abstract: By providing a plurality of preformed components which are quickly and easily affixed in engagement with each other, a final construction is realized which peripherally surrounds any desired mattress configuration in cooperating association therewith. In this way, a new foam plastic product is achieved which is capable of being quickly and easily mounted to mattress constructions peripherally surrounding the mattress and providing an enhanced side support system. In this way, any desired mattress size or configuration is capable of being peripherally surrounded with a foam support assembly for enhancing the mattress construction and configuration. Furthermore, by employing the present invention, a rapid, convenient, and virtually labor free assembly is realized.

Abstract: Embodiments disclosed herein include cellular mattress assemblies and related methods. The cellular mattresses assemblies may comprise thermoplastic material and/or thermoset material to achieve appropriate comfort and support characteristics. The cellular mattress assemblies may also comprise one or more components including a cellular thermoplastic foam profile to achieve appropriate comfort and support characteristics. The cellular mattress may include a support layer, a comfort layer, and a transition layer between the support layer and the comfort layer.

Abstract: An insert for a bed facilitates use of a mattress having one cross-sectional profile with a bed frame having a different cross-sectional profile. An insert includes a base extending between sidewalls which have various contoured surfaces. The contoured sidewall surfaces enable the insert to be disposed in a bed frame in association with a mattress. Inner surfaces of the sidewalls are configured to accommodate receipt of a mattress while outer surfaces of the sidewalls are configured for the insert to be disposed in a bed frame. The surface sidewalls may further be configured to provide the insert with a safety feature which prevents or reduces the likelihood of a user falling from the side of a mattress associated with the insert.

Abstract: A one piece foam mattress core or innerspring encasement is a single contiguous piece of foam having a mattress core or base and four perimeter side supports and which fits with a mattress core or innerspring to provide an integrated mattress construction. The mattress core or base of the encasement is positioned below the mattress core or innerspring proximate to or against a bottom surface. The mattress core or base and the perimeter side supports are connected along fold lines or grooves in the single piece of foam so that the perimeter side walls can be folded to vertical positions about a perimeter of the mattress core or innerspring. The single piece of foam of the encasement is producible in different sizes to fit with different size mattress cores or innersprings.

Abstract: A side rail assembly for supporting an edge of a mattress includes a layer of a polyurethane foam comprising an open cellular structure, wherein the open cellular structure comprises about 10 to about 40 cells per inch, a hardness of about 35 pounds-force to about 100 pounds-force, and a density of about 1.2 pounds per cubic foot to about 2.0 pounds per cubic foot, wherein the layer is configured to be disposed about a perimeter of an inner core of the mattress and is configured to permit the flow of fluid from and to the inner core through the layer.

Abstract: Embodiments disclosed in the detailed description include a unitary or monolithic composite or hybrid cushioning structure(s) and profile(s) comprised of a cellular thermoplastic foam and a thermoset material. The thermoset material may also be provided as cellular foam as well. In one embodiment disclosed herein, the unitary composite cushioning structure is formed from a cellular thermoplastic foam and a thermoset material. The cellular thermoplastic foam provides support characteristics to the unitary composite cushioning structure. The thermoset material provides a resilient structure with cushioning characteristics to the cushioning structure. A stratum is disposed between at least a portion of the cellular thermoplastic foam and at least a portion of the thermoset material to secure the at least a portion of the thermoset material to the at least a portion of the cellular thermoplastic foam to provide a unitary composite cushioning structure.

Abstract: A flexible system is provided for surrounding a perimeter and covering a top surface of a mattress. The flexible system supports one or more appendage(s) of a character. The flexible system includes a textile or fabric frame for covering portions of a head side, a foot side and intermediate sides of the mattress. The textile or fabric frame forms an opening around a portion of a top surface of the mattress, where the opening has an inner peripheral edge. The flexible system further includes a cover sheet positioned over the top surface, and having an outer peripheral edge that is removably attached to the inner peripheral edge of the opening of the frame. The appendage(s) of the character are supported on the textile or fabric frame at one or more of the head side, the foot side and the intermediate sides of the mattress.

Abstract: Mattress assemblies and related methods employing elastic bands to provide at least a portion of an encasement, including for bedding and seating applications are disclosed. In one embodiment, a mattress assembly is provided. The mattress assembly may include a mattress core and an elastic foam edge-support band compressively engaged along the outer perimeter of the mattress core. The mattress core has a sleep surface and an outer perimeter width and length disposed in a corresponding width and length dimension of the sleep surface. Before assembly, the elastic foam edge-support band has a preassembled inner perimeter width and length, which are less in distance than the width and length of the mattress core. As disposed in the mattress assembly, the elastic foam edge-support band has an assembled inner perimeter width and length which are greater in distance than the preassembled inner perimeter width and length of the elastic foam edge-support band.

Abstract: By providing a plurality of preformed components which are quickly and easily affixed in engagement with each other, a final construction is realized which peripherally surrounds any desired mattress configuration in cooperating association therewith. In this way, a new foam plastic product is achieved which is capable of being quickly and easily mounted to mattress constructions peripherally surrounding the mattress and providing an enhanced side support system. In this way, any desired mattress size or configuration is capable of being peripherally surrounded with a foam support assembly for enhancing the mattress construction and configuration. Furthermore, by employing the present invention, a rapid, convenient, and virtually labor free assembly is realized.

Abstract: The support characteristics within a foam mattress body may be varied by inserting reinforcements into channels cut or otherwise formed within the foam.

Abstract: By providing a plurality of preformed components which are quickly and easily affixed in engagement with each other, a final construction is realized which peripherally surrounds any desired mattress configuration in cooperating association therewith. In this way, a new foam plastic product is achieved which is capable of being quickly and easily mounted to mattress constructions peripherally surrounding the mattress and providing an enhanced side support system. In this way, any desired mattress size or configuration is capable of being peripherally surrounded with a foam support assembly for enhancing the mattress construction and configuration. Furthermore, by employing the present invention, a rapid, convenient, and virtually labor free assembly is realized.

Abstract: A one piece foam mattress core or innerspring encasement is a single contiguous piece of foam having a mattress core or base and four perimeter side supports and which fits with a mattress core or innerspring to provide an integrated mattress construction. The mattress core or base of the encasement is positioned below the mattress core or innerspring proximate to or against a bottom surface. The mattress core or base and the perimeter side supports are connected along fold lines or grooves in the single piece of foam so that the perimeter side walls can be folded to vertical positions about a perimeter of the mattress core or innerspring. The single piece of foam of the encasement is producible in different sizes to fit with different size mattress cores or innersprings.

Abstract: Dew condensation-preventing mattress is constructed to have a three-dimensional netted structure by extruding a molten material containing at least a thermoplastic resin into filaments, forming an aggregation of multiple filaments looped and randomly entangled with partial thermal adhesion in a plate-like shape, and cooling down to solidify the plate-like aggregation of the multiple filaments. The three-dimensional netted structure has hard side regions of a higher bulk density formed on left and right longitudinal side faces of the three-dimensional netted structure. The dew condensation-preventing mattress of this arrangement has an effect of dew condensation prevention as well as an effect of body pressure dispersion.

Abstract: An aspect of the present invention relates to a method and system of receiving information of a user's support facility comfort requirements; using a software application to determine a proper support facility firmness configuration to match the user's requirement; selecting foam springs with the proper user required firmness as determined by the software application; and configuring the selected foam springs within the support facility to match the user's firmness requirements.

Abstract: A stiffening system for the perimeter edges of a foam core mattress comprising a coil spring (or other spring-based) structure disposed along one or more perimeter edges (e.g., one or both side edges, the foot, the head, or a combinations thereof including the foot and both side edges) of a mattress having a foam sleeping area. The perimeter spring structure is rectangular or square in cross-section and provides sufficient stiffness for comfortable seating on the edges of the mattress and is joined to the foam core by planar fabric elements that span the joint between them and are attached to both. The sleep area provides the softness and other salutary effects of a foam sleeping surface while the stiffer spring perimeter element provides the rigidity need for comfortable seating and wear resistance.

Abstract: A mattress converts from a crib mattress with side walls and end walls surrounding an infant sleeping surface on a central mattress section therebetween to a twin mattress with a substantially planar sleeping surface to support a reclining child or adult. The end walls and side walls are tethered or hingedly connected to the central mattress section and are moveable from an upright position (crib mattress) to an open position (twin mattress). Sidewall extensions are hingedly connected to the side walls and are pivotably moveable from a first position above the side walls to a second position axially aligned with the side walls when the side walls are in the open position.

Abstract: An infant mattress fits safely in a crib without any gap between the mattress and the walls or bars of the crib. A ring of memory foam surrounds the supporting foam layers of the mattress and forms a snug fit with the vertical bars of the crib regardless of whether the dimensions of the particular crib or mattress vary from their standard sizes. The memory foam ring intentionally renders the infant mattress somewhat larger than the inner dimensions of the crib. The ring compresses when the mattress is placed in a crib in which opposing side bars are separated by a distance that is smaller than the mattress width. The ring is formed by pouring foam into a rectangular mold around the supporting foam layers. Where the mattress includes pocket coils on the supporting foam layers, the ring of memory foam conforms to the outer row of pocket coils.

Abstract: A support surface includes a plurality of air cylinders disposed crosswise and aligned to define the support surface. The air cylinders include a first foam therein. Adjacent cylinders are provided with varying support characteristics to define multiple support zones along a length of the support surface. At least some of the plurality of air cylinders additionally include an integrated bolster at ends thereof that is formed of a second foam, firmer than the first foam.

Abstract: Stepped-edge and side-support members, systems, assemblies, and related methods for an innerspring assembly or other core are disclosed. In one embodiment, an innerspring assembly or core is provided having an interior area of a first height surrounded by one or more exterior, perimeter area(s) of shorter height(s) to provide a stepped-edge innerspring assembly or core. At least a portion of side-support members are placed onto at least a portion of the top surface of the perimeter area to provide edge-support for the innerspring assembly or core. In this manner, a greater portion of the side-support members can be disposed in the sleeping area of the innerspring assembly or core since the underlying perimeter area provides spring support to the side-support members. Further, this support can assist in retention and/or recovery of the shape of the side-support members to further prevent or reduce compression set of the side-support members.

Abstract: An aspect of the present invention relates to a method and system of receiving information of a user's support facility comfort requirements; using a software application to determine a proper support facility firmness configuration to match the user's requirement; selecting foam springs with the proper user required firmness as determined by the software application; and configuring the selected foam springs within the support facility to match the user's firmness requirements.

Abstract: An edge support for reinforcing an edge of a spring core is provided. The edge support includes a plurality of engaging members that are movable between flat and folded positions. In the flat position, an engaging member is generally aligned with the rest of the edge support. In the folded position, the engaging member extends laterally from the rest of the edge support. With the engaging members in the flat position, the edge support has a relatively thin thickness allowing the edge support to be rolled which may be beneficial for the shipping and handling of the edge support. During the assembling of the mattress, the engaging members may be moved to the folded position such that engaging members extend inwardly into the spring core between the spring coils of the spring core.

Abstract: An aspect of the present invention relates to a method and system of receiving information of a user's support facility comfort requirements; using a software application to determine a proper support facility firmness configuration to match the user's requirement; selecting foam springs with the proper user required firmness as determined by the software application; and configuring the selected foam springs within the support facility to match the user's firmness requirements.

Abstract: A mattress includes a core portion having independently inflatable head, seat and foot zones, each of which includes at least an A bladder and a B bladder. Pressure within all the core portion A bladders is adjustable separately from pressure within all the core portion B bladders. Pressure within the A bladders of a given zone are adjustable separately from pressure within the B bladders of the given zone. Pressure within the A bladders of a given zone are separately adjustable from pressure within the A bladders of zones other than the given zone, and pressure within the B bladders of a given zone are separately adjustable from pressure within the B bladders of zones other than the given zone.

Abstract: The crib mattress forms a structure that allows an infant to breathe properly when lying face down thereon. The crib mattress is adapted to replace current mattresses made with polyvinyl chloride and the like. The mattress includes a wooden frame assembled with a toxin-free, breathable material attached thereto. A soft, absorbent, cover is positioned over the assembled frame to form the upper surface of the mattress. A liquid-impervious liner is attached to the frame to form the undersurface of the mattress.

Abstract: A mattress foundation with a perimeter structure has a frame, springs mounted upon the frame, and a grid supported by the springs, and perimeter structure at a perimeter of the frame which extends from the frame to the grid, forming an exterior wall which extends from the frame to a border wire of the grid. When the perimeter structure is made of structural and reflexive material such as closed-cell foam, it co-acts with the grid and springs and provides additional support to the perimeter region of the grid and foundation. The exterior wall of the perimeter structure forms a solid surface over which padding or upholstery is placed.

Abstract: A bed comprises a bed frame and a bed deck supported by the bed frame. The bed deck comprises a step deck, including a lower deck, an upper deck, a side wall connecting the lower deck to the upper deck, and a recess defined by the lower deck and the side wall. The side wall at least partially surrounds the recess. A mattress comprises a safety mattress extending across the lower bed deck and having air cells including air cells resting on the upper bed deck.