Spring assembly

Claim 2

The combination with a rectangular frame to which there are attached spaced pairs of transversely and longitudinally extending wires secured at their intersections to each other, said crossing wires providing rectangular coil-supporting seats, each comprising spaced parallel portions of said wires and one pair of the spaced parallel portions at each seat containing centrally located depressions, of coiled springs having circular end loops of greater diameter than the distance between the wire portions containing the depressions, said loops containing reversely bent segments, the distance between which is less than the distance between the wire portions containing the depressions, said coils being seated against the side of the frame from which the depressions extend and being sprung into said depressions.

Claim 3

A structure according to claim 1, wherein the depressions are deeper than the thickness of the wire of the loops and the bent segments are sprung into the depressions above the bottoms thereof,

Claim 4

A structure according to claim 1, wherein the depressions are substantially rectangular in configuration, having spaced parallel, vertically disposed legs and a horizontally disposed connector parallel to the undepressed portions of the wires and said segments have spaced, reversely bent portions sprung around said vertically disposed legs into said depressions.

Claim 5

A structure according to claim 1, wherein the segments are coplanar with the loops.

Claim 6

The combination with a grid comprised of a rigid rectangular frame to which are secured the ends of spaced pairs of transversely and longitudinally extending wires providing regularly spaced rectangular coil end seats defined by spaced parallel portions of said wires, of spring coils having at one end circular loops of larger diameter than the distance between one pair of the spaced parallel portions of said wires at the seats, said coils being disposed against one side of the grid against the seats with said portions of the wires containing the depressed portions extending through the loops at diametrically opposed sides of the loop and segments comprising inwardly, reversely bent portions of the loops, the inner extremities of which are spaced at a lesser distance from each other than the distance between said depressed portions of said wires situated in said depressed portions above the bottoms thereof.

Claim 7

The combination with a grid comprised of a rigid rectangular frame to which are secured the ends of spaced pairs of transversely and longitudinally extending wires providing regularly spaced rectangular coil end seats defined by spaced parallel portions of said wires, of spring coils having at one end circular loops of larger diameter than the distance between one pair of the spaced parallel portions of said wires at the seats, said coils being disposed against one side of the grid against the seats with said portions of the wires containing the depressed portions extending through the loops at diametrically opposed sides of the loop and segments comprising inwardly, reversely bent portions of the loops, the inner extremities of which are spaced at a lesser distance from each other than the distance between said depressed portions of said wires situated in said depressed portions above the bottoms thereof.

Claim 8

A structure according to claim 5, wherein said crossing wires are secured at their intersections.

Claim 9

A structure according to claim 5, wherein the depressed portions of the wire portions at the seats are substantially rectangular in configuration and of a depth greater than the thickness of the wire of the loops.

Claim 10

A structure according to claim 5, wherein the loops underlap the wires containing the depressions and the depressions in the wires at the seats are shorter than the cordal length of the underlapping portions of the loops.

Claim 11

A structure according to claim 5, wherein the loops underlap the wires containing the depressions, the depressions in the wires at the seats are shorter than the cordal length of the underlapping portions of the loops, and the distance between the reversely bent segments is shorter than the distance between the depressed portions.

Claim 12

A structure according to claim 5, wherein said reversely bent portions of the loops lie in the plane of the loops.

Claim 13

The combination with a frame comprising a rectangular border wire to which there are attached spaced pairs of transverse and longitudinally extending wires secured at their intersections to each other, and wherein the distance between the wires of the pairs of wires extending in one direction is less than the distance between the wires of the pairs of wires extending at right angles thereto such that crossing pairs of wires form rectangular coil end seAts, said wires at the lesser spacing containing depressions, of coiled springs having at one end loops containing reversely bent segments, the distance between which is less than the distance between the wires at the lesser spacing, said end coils being adapted to be seated against the side of the frame from which the depressions extend with the segments sprung into the depressions.

Claim 14

The combination with a frame comprising a rectangular border wire to which there are attached spaced pairs of transverse and longitudinally extending wires secured at their intersections to each other, and wherein the distance between the wires of the pairs of wires extending in one direction is less than the distance between the wires of the pairs of wires extending at right angles thereto such that crossing pairs of wires form rectangular coil end seAts, said wires at the lesser spacing containing depressions, of coiled springs having at one end loops containing reversely bent segments, the distance between which is less than the distance between the wires at the lesser spacing, said end coils being adapted to be seated against the side of the frame from which the depressions extend with the segments sprung into the depressions.

Claim 15

The combination according to claim 11, wherein the distance between the wires of the pairs of wires in each of the longitudinal and transverse directions is the same, and wherein the end loops engage all four of the wires at the seat.

Claim 16

The combination according to claim 11, wherein the distance between the wires of the pairs of wires in each of the longitudinal and transverse directions is the same, and all four of the wires at a seat contain depressions and there are four correspondingly located segments in the loops sprung into said depressions.