Foundation spring unit

Claim 2

A foundation spring unit for supporting a mattress, said unit comprising a plurality of longitudinally extending columns and transversely extending rows of coil springs, outer border means extending around said unit and being connected to the coil springs at the periphery of said unit, a central support member comprising a substantially rectangular peripheral element and at least one elongated connecting element, said peripheral element being disposed with its edge portions extending longitudinally and with each of its end portions extending diametrically across and being connected to coil springs of a respective one of said transverse rows at a distance inwardly from the longitudinal ends of said unit of at least one-fourth the length of said unit, said connecting element being disposed parallel to the end portions of said peripheral element and extending between and being connected to the edge portions of said peripheral element and extending diametrically across and being connected to coil springs of a respective one of said transverse rows, whereby the central portions of said foundation unit will be reinforced particularly in the transverse direction.

Claim 3

The foundation spring unit of claim 1 wherein the edge portions of said peripheral element are connected to coil springs in the respective next-to-outer columns of coil springs, and helical coil means operatively connecting said next-to-outer columns of coils to the longitudinal edge portions of said outer border means.

Claim 4

The foundation unit of claim 1 wherein the spacing between the end portions of said peripheral element and said connecting element is at least equal to the diameter of one of said coil springs.

Claim 5

The foundation unit of claim 1 wherein there are a plurality of connecting elements with the spacing between said elements being substantially equal to the spacing between each of the end portions of said peripheral elements and the next adjacent connecting element.

Claim 6

The foundation unit of claim 1 wherein said peripheral element and said connecting element are flat bands.

Claim 7

In combination with a mattress having a plurality of coil springs and a plurality of elongated support members traversing said springs at the top and bottom thereof and extending longitudinally from adjacent the terminal coils at one end of the mattress to adjacent the terminal coils at the other end; a foundation unit comprising a plurality of coil springs, bottom support means for said coil springs, and a plurality of elongated support members traversing said springs at the top thereof and extending laterally from adjacent the terminal coils at one edge of the unit to adjacent the terminal coils at the other edge of the unit, whereby when the mattress is placed in aligned overlying relationship with respect to said foundation unit the elongated support members in said foundation unit will extend substantially normal to the elongated support members in said mattress.

Claim 8

In combination with a mattress having a plurality of coil springs and a plurality of elongated support members traversing said springs at the top and bottom thereof and extending longitudinally from adjacent the terminal coils at one end of the mattress to adjacent the terminal coils at the other end; a foundation unit comprising a plurality of coil springs, bottom support means for said coil springs, and a plurality of elongated support members traversing said springs at the top thereof and extending laterally from adjacent the terminal coils at one edge of the unit to adjacent the terminal coils at the other edge of the unit, whereby when the mattress is placed in aligned overlying relationship with respect to said foundation unit the elongated support members in said foundation unit will extend substantially normal to the elongated support members in said mattress.

Claim 9

The combination of claim 6 wherein said foundation unit further includes a substantially rectangular peripheral element the ends of which are spaced inwardly from the ends of said unit at a distance at least one-fourth the length of said unit and the edges of said periphEral element are spaced at least one coil spring diameter from the edges of said unit.

Claim 10

In combination with mattress having a plurality of coil springs and a plurality of elongated support members traversing said coil springs at the top and bottom thereof and extending longitudinally from adjacent the terminal coil springs at one end of the mattress to adjacent the terminal coil springs at the other end; a foundation unit comprising a plurality of parallel, longitudinally extending columns and transversely extending rows of coil springs, bottom support means for said coil springs, a central member comprising a substantially rectangular peripheral element and at least one connecting element, said peripheral element being disposed with its edge portions extending longitudinally and with each of its end portions extending diametrically across and being connected to coils of a respective one of said transverse rows at a distance inwardly from the longitudinal ends of said unit of at least one-fourth the length of said unit, said connecting element being disposed parallel to the end portions of said peripheral element and extending between and being connected to the edge portions of said peripheral element and extending diametrically across and being connected to coils of a respective one of said transverse rows, whereby the central portion of said foundation unit will be reinforced particularly in the transverse direction.

Claim 11

In combination with mattress having a plurality of coil springs and a plurality of elongated support members traversing said coil springs at the top and bottom thereof and extending longitudinally from adjacent the terminal coil springs at one end of the mattress to adjacent the terminal coil springs at the other end; a foundation unit comprising a plurality of parallel, longitudinally extending columns and transversely extending rows of coil springs, bottom support means for said coil springs, a central member comprising a substantially rectangular peripheral element and at least one connecting element, said peripheral element being disposed with its edge portions extending longitudinally and with each of its end portions extending diametrically across and being connected to coils of a respective one of said transverse rows at a distance inwardly from the longitudinal ends of said unit of at least one-fourth the length of said unit, said connecting element being disposed parallel to the end portions of said peripheral element and extending between and being connected to the edge portions of said peripheral element and extending diametrically across and being connected to coils of a respective one of said transverse rows, whereby the central portion of said foundation unit will be reinforced particularly in the transverse direction.

Claim 12

The combination of claim 8 wherein a substantially rectangular top outer border member extends around the foundation unit in spaced surrounding, substantially coplanar relationship with said central support member and means is provided for connecting said border member rows and terminal columns of coil springs.

Claim 13

A foundation spring unit for supporting a mattress, said unit comprising a plurality of longitudinally extending columns and transversely extending rows of coil springs, outer border means extending around said unit and being connected to the coil springs at the periphery of said unit, a central support member comprising a substantially rectangular peripheral element and a plurality of elongated connecting elements, said peripheral element being disposed with its edge portions extending longitudinally and with each of its end portions extending diametrically across and being connected to coil springs of a respective one of said transverse rows at a distance inwardly from the longitudinal ends of said unit of at least one-fourth the length of said unit, said connecting elements being disposed parallel to the end portions of said peripheral element and extending between and being connected to the edge portions of said peripheral element and extending diametrically across and being connected to coil springs of a respective one of said transverse rows, the space between the connecting elements being equal, with at least two untransversed rows of coil springs being disposed between adjacent connecting elements and between each of the end portions of said peripheral element and the next adjacent connecting element, whereby the central portion of said foundation unit will be reinforced particularly in the transverse direction.

Claim 14

A foundation spring unit for supporting a mattress, said unit comprising a plurality of longitudinally extending columns and transversely extending rows of coil springs, outer border means extending around said unit and being connected to the coil springs at the periphery of said unit, a central support member comprising a substantially rectangular peripheral element and a plurality of elongated connecting elements, said peripheral element being disposed with its edge portions extending longitudinally and with each of its end portions extending diametrically across and being connected to coil springs of a respective one of said transverse rows at a distance inwardly from the longitudinal ends of said unit of at least one-fourth the length of said unit, said connecting elements being disposed parallel to the end portions of said peripheral element and extending between and being connected to the edge portions of said peripheral element and extending diametrically across and being connected to coil springs of a respective one of said transverse rows, the space between the connecting elements being equal, with at least two untransversed rows of coil springs being disposed between adjacent connecting elements and between each of the end portions of said peripheral element and the next adjacent connecting element, whereby the central portion of said foundation unit will be reinforced particularly in the transverse direction.