Abstract: A formed wire spring assembly having upper and lower spaced decks including a border wire and a plurality of deck wires arranged in a criss-cross fashion. The deck wires of the upper deck and lower decks are paired with one another and are connected by springs disposed between the two decks to support the decks in spaced relationship and yieldable fashion relative to one another.

Abstract: A support device having a plurality of support units, each comprising a plurality of flexible, substantially vertical support columns, with the bottoms of the support columns attached at equidistant intervals to a base member and the tops of the support columns attached at equidistant intervals to a substantially perpendicular support platform. The support columns provide directional flexibility to the columns, upon compression, to provide a substantially uniform counter-force through a range of flexion of the support columns and corresponding downward deflection of said support device. Such uniform counter-force during compression simulates a fluid-like support system. The support columns may be comprised of a solid, synthetic foam such as high density polyurethane or springs made of metal or other material. The support units preferably are arranged in a matrix to provide collective support.

Abstract: A foldable bed is movable between an unfolded position, in which interconnected seat, cavity, and body sections are substantially horizontally aligned and of substantially uniform depth, and a folded position, in which the body section is horizontally disposed, the seat section is horizontally disposed and overlies said body section, the cavity section is generally upright and extends between the body and seat sections. In the folded position, the seat section of the mattress is collapsible, and the cavity section of the mattress is noncollapsible. The bed frame can include a leg that is spaced away from the frame in the folded position that compresses a mattress head section, thereby forming a space within which collapsible springs of the seat section can reside. The bed can include springs having upper, intermediate, and lower runs, wherein the upper and lower runs include offset portions extending in opposite directions that are generally orthogonal to a plane defined by the spring intermediate run.

Abstract: A foldable bed is movable between an unfolded position, in which interconnected seat, cavity, and body sections are substantially horizontally aligned and of substantially uniform depth, and a folded position, in which the body section is horizontally disposed, the seat section is horizontally disposed and overlies said body section, the cavity section is generally upright and extends between the body and seat sections. In the folded position, the seat section of the mattress is collapsible, and the cavity section of the mattress is noncollapsible. The bed frame can include a leg that is spaced away from the frame in the folded position that compresses a mattress head section, thereby forming spaced within which collapsible springs of the seat section can reside. The bed can include springs having upper, intermediate, and lower runs, wherein the upper and lower runs include offset portions extending in opposite directions that are generally orthogonal to a plane defined by the spring intermediate run.

Abstract: A foldable bed is movable between an unfolded position, in which interconnected seat, cavity, and body sections are substantially horizontally aligned and of substantially uniform depth, and a folded position, in which the body section is horizontally disposed, the seat section is horizontally disposed and overlies said body section, the cavity section is generally upright and extends between the body and seat sections. In the folded position, the seat section of the mattress is collapsible, and the cavity section of the mattress is noncollapsible. The bed frame can include a leg that is spaced away from the frame in the folded position that compresses a mattress head section, thereby forming a space within which collapsible springs of the seat section can reside. The bed can include springs having upper, intermediate, and lower runs, wherein the upper and lower runs include offset portions extending in opposite directions that are generally orthogonal to a plane defined by the spring intermediate run.

Abstract: A spring includes upper and lower runs of wire interconnected by an intermediate run of wire, all of the runs being integrally formed from spring wire. The opposite ends of the upper and lower runs respectively include hooks and coils while the intermediate run includes a coil. The hooks and coils of the upper and lower runs are used to connect the spring to an adjacent spring with the hook of one spring being received about the coil of an adjacent spring. The upper and lower runs are offset above and below the coils of the upper and lower runs respectively to accommodate a helical wire which is wrapped around the upper run for interconnecting runner wires which extend transversely of the upper run. The runner wires have offset portions which are secured to the upper runs by the helical wire. In one form the coils in the upper and lower runs are provided with a projecting recess or ear for receiving the hooks of an adjacent spring.

Abstract: Disclosed is an improved innerspring unit for a mattress using a plurality of formed wire elements for support. Enhanced lateral and longitudinal stability of the improved innerspring is provided by one or more stabilizing features including dual formed wire elements, complimentary recesses to secure the intersection of longitudinal and lateral wires and formed wire elements disposed on the edges of the unit which are formed of the same wires which extend longitudinally and laterally across the unit. A variety of different formed wire elements is disclosed, each of which provide different support characteristics. By varying the type, number and location of the different formed wire elements, a particular support profile may be provided which may correspond, for example, to the weight contour of a prone human body.

Abstract: Wire spring assemblies for use in furniture items such as mattresses and seat cushions are made of two half units. The half units include spring elements extending from a generally planar deck with the spring elements containing complementary connecting structures at their distal ends which enable the half units to be assembled together by inverting one half unit relative to the other, aligning the two half units and snap-fitting the connecting structures of the spring elements together to form a double sided mattress or seat core. The assemblies are then upholstered in a normal fashion.

Abstract: A spring assembly for bedding and furniture which includes a support frame and a grid unit disposed above and in general vertical alignment with the frame, the grid unit including a border wire and cross wires arranged in a criss-cross pattern on said border wire. A plurality of upright spring modules are arranged in a predetermined pattern on the grid unit and supported on said frame, each of the modules being attached in a clipless manner at the upper end thereof to the grid unit so as to be connected to the unit in a manner such that up and down movement of the grid unit results in up and down compression and expansion of the spring modules. Each of the spring modules being a one-piece wire spring of tapered shape to enable spring modules to be arranged in nested stacks for shipping and storage.

Abstract: A bent wire spring unit having a spaced pair of foot portions and a spring member extending upwardly from each foot portion. Each spring member is formed of a series of torsion bars and connector bars interconnected by bends in the spring wire. The spring members are connected at their upper ends by a locking member or portion having first and second pairs of bends in the spring wire and two locking bars extending from the second pair of bends. The locking bars are linear segments of wire angled downwardly such that they converge into a connecting bend. The locking bars and the connecting bend lie in a single plane and the distal ends of the locking bars and the connecting bend extend significantly below an uppermost torsion member of each spring member. A spring assembly is disclosed which includes the bent wire spring unit attached to a wire grid at its upper end and a base frame at its lower end.

Abstract: A spring includes upper and lower runs of wire interconnected by an intermediate run of wire, all of the runs being integrally formed from spring wire. The opposite ends of the upper and lower runs respectively include hooks and coils while the intermediate run includes a coil. The hooks and coils of the upper and lower runs are used to connect the spring to an adjacent spring with the hook of one spring being received about the coil of an adjacent spring. The upper and lower runs are offset above and below the coils of the upper and lower runs respectively to accommodate a helical wire which is wrapped around the upper run for interconnecting runner wires which extend transversely of the upper run. The runner wires have offset portions which are secured to the upper runs by the helical wire. In one form the coils in the upper and lower runs are provided with a projecting recess or ear for receiving the hooks of an adjacent spring.

Abstract: A nestably stackable bedding foundation assembly which replaces the traditional border wire and disposed coil spring foundation assembly in a so-called box spring. The nestably stackable foundation assembly may be nestably stacked with numerous other such assemblies for transportation, thereby avoiding the need to compress and tie the assembly for shipping. A bedding foundation comprises a rectangular base, a nestably stackable bedding foundation assembly fixedly attached atop the base, and spring means disposed between and connected to the base and the nestably stackable assembly.

Abstract: A box spring assembly which having a frame, a plurality of upwardly extending wire springs mounted on the frame and a wire deck supported by the springs so that the deck and springs cooperate to yieldably resists downwardly directed bedding loads. Each of the springs has a body comprised of a pair of side-by-side yieldable portions connected at their upper ends by a mounting bar. The yieldable portions include an upper column section and a lower column section connected by a middle section. The middle section is configured to bend in a substantially vertical plane in response to the downwardly directed load. Mounting feet extend from the lower ends of the yieldable portions and enable securement of the spring to the frame. The use of bending stresses in the springs to resist the bedding load produces a spring which stimulates a non-spring system in effective firmness while improving deformation resistance under normal abuse conditions.

Abstract: A foundation assembly is disclosed in which a wire grid is supported above a support frame by a plurality of wire form members extending parallel to one another and arranged in pairs. The wire form members have leg portions extending therefrom and are rotatably mounted to the wire grid to enable a wire subassembly to be shipped with the wire form members rotated to folded positions in which the leg portions lie against the wire grid. After shipping, the wire form members are rotated to extend the leg portions away from the wire grid at an angle less than ninety degrees where the paired wire support members cooperate together forming a rigid structure to prevent collapse of the foundation assembly.

Abstract: A spring insert for a waterbed mattress includes a plurality of spring bellows units arranged in upright relation within the mattress. Each bellows unit has a top wall and pleated sidewall which is collapsible from a normal expanded height to a shortened compressed height wherein the internal volume of the bellows unit is substantially reduced. Each bellows unit furthermore has a bleeder opening through one wall so that a compression load exerted on the bellows unit through the mattress top wall is resisted by both spring action and hydraulic action of the bellows units. The bellows units may be interconnected to form upper and lower sections arranged in stacked relation. Stacked pairs of upper and lower bellows units may be arranged in fluid communication to define joint hydraulic chambers.

Abstract: A pneumatic and load-supporting spring device for use in bedding, cushions and the like. The disclosed embodiments have tubular telescoping members that are biased apart by either an elastomer located in the overlapping region, or a helical spring located within the pneumatic cylinder formed by the tubes. A conical or dish-shaped head element with clips for securely engaging a typical wire grid found in many bedding products is also disclosed, as well as a dish-shaped head element using cooperating lobe and trough pairs to hold a grid wire therebetween to fix a spring device in place. A foot element is also disclosed for use in attaching a spring device on the base frame of a typical bedding product. The foot element can straddle and snap into a metal frame rail, or be stapled to a frame rail.

Abstract: A spring and grid sub-assembly for use in furniture and box spring assemblies in which spring modules are attached to the wire grid through an attachment system in which the springs are in both an over-under relationship and a side-to-side interwoven relationship with the cross wires through plastic deformation of the cross wires whereby the springs can not be removed from the wire grid without plastic deformation of either the grid or spring modules. The resultant sub-assembly can be easily transported from a sub-assembler to a final assembler without risk of the springs being displaced or removed from the wire grid. Furthermore, spring clips are not needed for attaching the spring modules to the grid.

Abstract: A bedding spring is formed of a single piece of sinuous wire with a plurality of bars connected together by bends. A top portion of the spring includes two inboard bars and two outboard bars which connect the spring to a wire grid. The outboard bars lie below a grid wire, the inboard bars lie above the grid wire, and the inboard bars have localized bends which form downwardly facing notches for receiving the grid wire. The spring has a bottom portion formed of two spaced apart feet which are connectable to a horizontal platform, and a midportion formed of two downwardly diverging sinuous wire sections which connect the top portion to the feet. A bedding unit is made from a horizontal platform, a wire grid, and plurality of such springs which have their bottom portions connected to the platform and their top portions connected to the grid.

Abstract: A bedding foundation unit having a top planar portion defined by two pluralities of spaced parallel grid wires, and a rigid frame spaced apart from the top planar portion by a plurality of modular springs. Each modular spring is formed from one piece of wire and has a top section, two vertical legs and two foot sections, with each of the vertical legs having at least one arcuate portion. The top section of most, if not all, of the modular springs extend longitudinally of the foundation and are connected to the top planar portion in a snap-fit manner, each top section of each modular spring being held in place by three grid wires and one grid wire below the top section.

Abstract: The present invention relates to a spring assembly for the seat portions or areas of upholstered furniture. The spring assembly provides a frame and a series of different spring types supported in a generally parallel arrangement within the frame. The spring assembly inlcudes a plurality of upper spaced, elongate sinuous springs extending between and above a pair of opposing front and back members. Located in the central region of the assembly is a rectangular quad coil spring mounted on two upper and lower wire stringers. The spring assembly is provided with a pair of Z-shaped sinuous springs, one located on each lateral side of the quad coil. The Z-shaped springs are mounted on lower elongate sinuous springs extending between the front and back members. The upper portions of the Z-shaped sinuous springs and the upper elongated sinuous springs are secured to the upper and lower stringers for stability and to prevent lateral movement of same.

Abstract: A box spring assembly in which the support springs are designed so as to permit spring location independent of long wire location in the support deck. The mattress support deck is suspended on support springs which are interwoven and self-secured on crosswires so as to eliminate the need of retaining clips in the assembly. The mattress support deck is inhibited in its lateral motion by support springs disposed therein in an interference relation with the long wires of the support deck. So constructed, a manufacturer is enabled to distribute the support springs as required and desired on the frame regardless of the position of the long wires.

Abstract: A spring assembly for bedding and furniture which includes a support frame and a grid unit disposed above and in general vertical alignment with the frame, the grid unit including a border wire and cross wires arranged in a criss-cross pattern on the border wire. A plurality of upright spring modules are arranged in a predetermined pattern on the grid unit and supported on the frame, each of the modules being attached in a clipless manner at the upper end thereof to the grid unit so as to be connected to the unit in a manner such that up and down movement of the grid unit results in up and down compression and expansion of the spring modules. Each of the spring modules being a one-piece wire spring of tapered shape to enable spring modules to be arranged in nested stacks for shipping and storage.

Abstract: A spring assembly for bedding and furniture which includes a rectangular support frame and a grid unit disposed above and in general vertical alignment with the frame, the grid unit including a border wire and cross wires arranged in a criss-cross pattern on said border wire. A plurality of upright formed wire springs modules are arranged in a predetermined pattern on the grid unit and supported on said frame. Some of the modules constitute main springs which are attached in a clipless manner at the upper ends thereof to the grid unit so as to be connected to the grid unit in a manner such that loads on the grid unit are yieldably resisted by the main springs. Others of the spring modules are corner springs located at the corners of the frame. The corner springs are similar to the main springs but are secured by conventional clips to the corners of the border wire in the grid unit.

Abstract: A box spring assembly in which the mattress support deck is supported by crosswires having integral, planar, sinuous end springs to provide improved peripheral support. Intermediate support springs are interwoven on the crosswires thus eliminating the need of retaining clips in assembly. The interweaving of the support springs on the crosswires allows the support springs, crosswires and integral sinuous end springs to act as a single entity. So constructed, the cost of manufacture is lowered and the ease of manufacture is increased.

Abstract: An improved spring is provided which may be used in cushions, mattresses, or box springs which includes a limiting internal member. This limiting member assist in limiting the longitudinal deflection of the springs. Also provided are snapped-fitting connections between the spring and a grid for use within a box spring. Also provided is a "floating" portion of a peripheral border wire, particularly suitable for use in a pair of box springs beneath a king-size mattress unit. Also provided is a corner guard which provided support for upholstered fabric on a box spring. Finally, an improved borderwireless mattress using a peripheral band is provided, which allows the mattress to bend more easily, without disadvantageous setting of its border wires.

Abstract: A box spring assembly includes a base frame, a top wire grid and a plurality of modular wire springs interconnecting the top wire grid and the base frame. The modular wire springs each comprises a unitary wire formed into an inverted U-shaped configuration with the closed end of each U-shaped spring having two edge connector bars and a diagonally extending central connector bar interconnected at its opposite ends to the edge connector bars by attachment segments. The closed end of the modular spring is snap-fit to the top wire grid so each of the edge connector bars supports separate portions of the top wire grid at intersections within the wire grid. The vertical legs of the modular spring include at least three torsion bars and two edge loops of differing radii. The edge loops, because of their differing radii impart differing softness or deflection characteristics to the modular springs.

Abstract: A bedding foundation unit having a top planar portion defined by two pluralities of spaced parallel grid wires, and a rigid frame spaced apart from the top planar portion by a plurality of modular springs. The modular springs are connected to the top planar portion in a snap-fit manner, each snap-fit end of each modular spring being held in place by three grid wires above and one grid wire below the snap-fit end.

Abstract: A nestably stackable bedding foundation assembly which replaces the traditional border wire and disposed coil spring foundation assembly in a so-called box spring. The nestably stackable foundation assembly may be nestably stacked with numerous other such assemblies for transportation, thereby avoiding the need to compress and tie the assembly for shipping.

Abstract: A spring element for a foundation unit and a foundation unit employing the spring element. The foundation unit is of the type having a top wire grid structure and a wooden bottom structure, with a plurality of the spring elements being disposed in space relationship between the grid structure and the bottom substructure. The spring elements include spaced support legs extending from a top portion, with the legs converging toward one another. Each leg has a series of spaced support segments, with the support segments lying generally in a single plane and extending oppositely from one another in a zig-zag fashion between the top portion and an attachment segment. Torsion segments are located between adjacent support segments, with the torsion segments extending generally perpendicular to the plane of the support legs. Suitable links are used to interconnect each torsion segment with its adjacent support segments of each support leg.

Abstract: A box spring for supporting a bedding matress. The box spring includes a rectangular base frame, a plurality of modular spring elements mounted atop the base frame, and a wire grid mounted atop the modular spring elements. Each of the modular spring elements comprises a horizontal straight center section terminating in horizontal plane curved end sections, at leat some of the curved end sections having single revolution coil springs extending vertically downwrad therefrom. The modular spring elements are arranged in parallel rows with adjacent spring elements of each row having alternatingly aligned straight center sections and adjacent modular elements within each row having a space between the curved end sections of the elements. The curved end sections of the modular spring elements are snap-fitted into upwardly open offset hooks in transverse wires of the wire grid.

Abstract: A limited deflection spring for use in a box spring assembly has a unitary wire body having a foot portion, an upright yieldable portion on the foot portion and a loading bearing portion at the upper end of the upright portion. The upright yieldable portion includes a pair of horizontally spaced upright columns which diverge relative to each other. Each of the upright columns is suspended between the load bearing portion and the foot portion by separate upper and lower torsion bar systems. Each of the torsion bar system includes a pair of generally horizontal torsion bars connected together by a central connecting bar. Suspension of the upright columns between separate torsion bar systems enhances lateral stability and impact load withstand capability of the spring elements. Spring elements having upwardly diverging upright columns may be mixed with elements having downwardly diverging upright columns in a box spring assembly so as to produce an optimum desired loading response in the assembly.

Abstract: A spring for a box assembly that is constructed to limit deflection of the spring to a position in which the spring is not overstressed. The limited deflection spring includes a wire body which has a load bearing portion, an upright yieldable portion, and a foot portion. The upright yieldable portion includes a pair of downwardly extending converging connecting bars integral at their upper ends with torsion bars at opposite ends of the load bearing portion. A pair of lower torsion bars are connected to the lower ends of the connecting bars and are spaced inward from a pair of downwardly extending converging wire columns which are connected at their upper ends to the lower torsion bars. As a downward load is applied to the load bearing portion, the wire columns move toward vertical positions in which they limit further deflection of the spring.

Abstract: A box spring assembly includes a base frame, a top wire grid and a plurality of formed wire springs interconnecting the top wire grid and the base frame. The formed wire springs each comprises a wire strip formed into an inverted U-shaped configuration with the closed end of each U-shaped spring generally Z-shaped and attached to the top wire grid by a snap-fit connection and the free ends at the bottom of the U-shaped spring being attached to the base frame.

Abstract: A non-coil spring is disclosed for use in a box spring assembly. The spring is a limited deflection spring having a lower portion for mounting to the frame of the box spring assembly, an upper attaching platform portion for attaching to a wire mattress support deck and an intermediate portion for resiliently supporting the upper attaching platfor spaced from the lower mounting portion. The intermediate portion inclues a pair of collapsible column sections having middle torsion bars which are connected to upper torsion bars in the attaching platform and lower torsion bars in the mounting portion by connecting bars which each diverge away from an end of the middle torsion bars in the column sections. During loading, these middle torsion bars in the column sections move toward each other until they engage in a cross bucking fashion to limit further deflection of the spring. At full deflection the platform is a predetermined spaced distance above the engaged middle torsion bars.

Abstract: A spring module for a mattress box spring is formed of a stiffening element made of a sinuously-shaped spring wire and an attachment clip for attaching the spring module to a frame of a box spring, the length of wire being resiliently bent into a circular form and held in the circular form by opposite end portions of the length of wire being engaged with the attachement spring clip. In accordance with the preferred embodiment, the attachment clip is formed of a plate having a pair of notches at opposite lateral sides thereof that receive a respective end portion of each of opposite ends of the circularly bent length of wire with the plate passing through terminal undulations of the sinuous shape located at these opposite end portions. Furthermore, for enabling the plate to grasp respective wires of a wire frame of a mattress box spring, each of opposite longitudinal ends of the plate is provided with a central offset tongue.

Abstract: A box spring assembly includes a base frame, a top wire grid and a plurality of sinous wire springs interconnecting the top wire grid and the base frame. The sinuous wire springs each comprises a sinuous wire strip formed into an inverted U-shaped configuration with the closed end of each U-shaped spring attached to the top wire grid by a snap-fit connection and the free ends at the bottom of the U-shaped spring being attached to the base frame.

Abstract: A box spring assembly includes a base frame, a top wire grid and a plurality of formed wire springs interconnecting the top wire grid and the base frame. The formed wire springs each comprises a wire strip formed into an inverted U-shaped configuration with the closed end of each U-shaped spring attached to the top wire grid by a snap-fit connection and the free ends at the bottom of the U-shaped spring being attached to the base frame.

Abstract: A box spring assembly includes a base frame, a top wire grid and a plurality of sinuous wire spring strips interconnecting the top wire grid and the base frame. The sinuous wire spring strips each comprises six substantially vertical legs and three spaced, substantially flat, horizontal platform sections with the flat platform sections of each spring being attached to the top wire grid and the bottom ends of each leg being attached to the base frame.

Abstract: A spring module for disposition between a supporting frame and a grid frame to yieldably support the latter relative to the supporting frame, comprising spaced, parallel top and bottom attaching elements and spaced supports disposed between and attached to the top and bottom attaching elements embodying vertically-disposed and inclined lengths of wire disposed symmetrically about the vertical axis of the module.

Abstract: A seat spring assembly for upholstered furniture incorporates an inverted torque arm adjacent the back rail of the furniture frame. The torque arm is formed upwardly out of the body of a sinuous spring band which descends from its crown closer to the front rail, in a continuous curve, to lower end of the torque arm at a point below the level of the top of the back rail. The torque arm is connected, from its upper end to the back rail, by translatory means which include a generally horizontal link.

Abstract: A foundation unit having a top bearing grid structure secured to a bottom substructure by intermediate support elements. The grid structure comprises a series of spaced longitudinal and transverse spring elements, each spring element being formed to permit elastic elongation thereof. Elastic elongation is accomplished by a series of V-shaped segments in each of the spring elements, the segments being located at the intersections of the spring elements and being joined by a clip. The support elements comprise wire elements which are L-shaped and which are composed of two planar portions connected at right angles to one another. The wire elements are located in transverse rows with the orientation of the wire elements in each row being opposite to the orientation of the wire elements in the adjacent row so that loads applied to the foundation unit are balanced.

Abstract: A box spring assembly in which the mattress support deck is formed by a plurality of components all of which are formed from spring wire to thereby achieve a support deck of increased strength and improved durability. In addition, the components are structurally interrelated and clipped together so as to restrain relative movement of the components to thereby achieve a box spring assembly of improved stability.

Abstract: A box spring assembly includes a base frame, a top wire grid and a plurality of sinuous wire springs interconnecting the top wire grid and the base frame. The sinuous wire springs each comprise a sinuous wire strip formed into an inverted U-shaped configuration with the closed end of each U-shaped spring attached to the top wire grid and the free ends at the top of the U-shaped spring attached to the base frame.

Abstract: An improved spring unit for a box spring assembly in which a grid assembly is supported above a frame by a plurality of such spring units. The spring units provide self-limited deflection to prevent them from taking a permanent set after being overloaded. Each unit has two separate legs which support the spring assembly grid assembly to reduce point loadings on the grid assembly. The top portion of the spring spreads out forces over a large area on the grid to further reduce point loading. The configuration of the spring units enables them to be stacked densely without interlacing or twisting. The spring units include a center base bar, a pair of torsion bars extending perpendicularly therefrom, a center torsion bar which is connected to the upper and lower portions of the spring by connecting bars, and a top portion having a torsion bar and a pair of bar members extending in the same horizontal plane.

Abstract: A spring module for use in a spring assembly embodying a base frame and a grid frame comprising upper and lower attaching elements for connecting the module to the base frame and grid frame and a plurality of lower and upper symmetrically-disposed, yieldable legs connecting the lower and upper attaching elements.

Abstract: A box spring assembly includes a base frame, a top wire grid and a plurality of sinuous wire springs interconnecting the top wire grid and the base frame. The sinuous wire springs each comprise a sinuous wire strip formed into a U-shaped configuration with the bottom of each U-shaped spring attached to the base frame and the free ends at the top of the U-shaped spring attached to the wire grid.

Abstract: A bedding mattress support foundation comprises a base frame, a plurality of formed wire springs mounted upon the base frame, and a wire grid mounted atop the formed wire springs. Each formed wire spring comprises a generally S-shaped horizontal load supporting portion and a pair of vertically extending yieldable end portions extending downwardly from opposite ends of the load supporting portion. Two parallel wires of the wire grid are secured to curvilinear portions of the S-shaped horizontal load supporting portion of each spring and three other parallel wires extending perpendicular to the first two parallel wires and rest atop but are unsecured to the S-shaped horizontal load supporting portion of each spring.

Abstract: A box spring assembly having modular spring elements distributed in an array beneath rectangular pockets of a wire grid top. The elements include a single piece of wire formed into a head configured to support and be contained within selected pockets of the wire grid top, a base formed of the two ends of the wire to attach to a lower base frame, and a pair of compressible arms formed into a pattern of bars and bends which give firm elastic support with economy of wire.

Abstract: A bedding unit such as a box spring has springs with lower portions mounted on the frame of the unit, upper portions connected to the wire grid of the unit, and midportions which are collapsible to support the grid resiliently on the frame. The upper portion of a corner spring includes a vertically uncompressible loop which contacts the frame when the midportion is collapsed, thereby limiting the deflection of the spring. The loop also prevents the filler material fo the unit from collapsing inwardly. The main springs of the unit have upper portions which have hooks for engaging the grid wires of the unit. These hooks are located at opposite ends of the wire which forms the spring. The upper portions have transverse bars which are connected to the hooks by connecting sections.

Abstract: A bent wire spring unit for interposition between a grid frame and base frame comprising upper and lower attaching elements and intervening spaced, parallel, oppositely-facing supports comprising vertical lengths of wire and at the upper and lower ends of the vertical lengths of wire, V-shaped lengths of wire, the legs of which are connected, respectively, to the vertical lengths of wire and to the attaching elements.