Mattress spring assembly

1. A mattress, comprising:

a first zone having springs packed in a first pattern wherein the first pattern is a cube pattern;

a second zone having the springs packed in a second pattern that is different from the first pattern, wherein the second pattern is a hexagonal pattern;

wherein the first pattern of the springs in the first zone extend for an entire width of the mattress;

wherein the second pattern of the springs in the second zone extend for the entire width of the mattress; and

wherein the springs in the entire mattress are metal coil springs that have the same stiffness, gauge, coil type, shape, size, and weight within normal engineering tolerances.

2. The mattress of claim 1 , wherein the first pattern and the second pattern are each uniform repeating patterns that extend for the entire width of the mattress.

3. A mattress, comprising:

a first zone having springs packed in a first pattern;

a second zone having the springs packed in a second pattern that is different from the first pattern;

wherein the springs in the first zone and the second zone have the same stiffness;

wherein the springs in the entire mattress are metal coil springs that are interchangeable parts; and

wherein the springs in the first zone have a packing density that is less than the packing density of the springs in the second zone.

4. The mattress of claim 3 , wherein the first pattern and the second pattern are each uniform repeating patterns.

5. The mattress of claim 3 , wherein:

the first pattern is a cube pattern; and

the second pattern is a hexagonal pattern.

6. The mattress of claim 3 , further comprising:

a third zone having the springs packed in a third pattern.

7. The mattress of claim 6 , wherein the first pattern and the third pattern are the same pattern.

8. The mattress of claim 6 , wherein:

the first pattern and the third pattern have a cube pattern; and

the second pattern is a hexagonal pattern.

9. The mattress of claim 6 , further comprising:

a fourth zone having the springs packed in a fourth pattern;

a fifth zone having the springs packing in a fifth pattern;

wherein the first pattern, the third pattern, and fifth pattern are the same; and

wherein the second pattern and the fourth pattern are the same.

10. The mattress of claim 3 , wherein the springs are pocket springs.

11. The mattress of claim 3 , wherein:

the mattress has a width; and

the first pattern of the springs in the first zone extend for the entire width of the mattress; and

the second pattern of the springs in the second zone extend for the entire width of the mattress.

12. The mattress of claim 3 , further comprising:

an upholstery layer covering the first zone and the second zone.

13. A method, comprising:

packing springs in a first pattern in a first zone of a core of a mattress;

packing the springs in a second pattern that is different from the first pattern in a second zone of the core;

wherein the first pattern and the second pattern are each uniform repeating patterns;

wherein the springs in the first zone and the second zone are metal coil springs;

wherein the springs in the first zone and the second zone are interchangeable parts; and

wherein the springs in the first zone have a packing density that is less than the packing density of the springs in the second zone.

14. The method of claim 13 , wherein:

said packing the springs in the first pattern includes packing the springs for an entire width of the mattress in the first pattern; and

said packing the springs in the second pattern includes packing the springs for the entire width of the mattress in the second pattern.

15. The method of claim 13 , further comprising:

packing the springs in a third pattern in a third zone of the core, wherein the second zone is sandwiched between the first zone and the second zone; and

wherein the first pattern and the second pattern have the same pattern.

16. The method of claim 13 , further comprising:

assembling a second core of a second mattress that has a firmness profile different from a firmness profile created by the first and second zones of the mattress.

17. A method, comprising:

packing springs in a first pattern in a first zone of a core of a mattress, wherein said packing the springs in the first pattern includes packing the springs in a cube pattern;

packing the springs in a second pattern that is different from the first pattern in a second zone of the core, wherein said packing the springs in the second pattern includes packing the springs in a hexagonal pattern;

wherein the first pattern and the second pattern are each uniform repeating patterns;

wherein the springs in the first zone and the second zone are metal coil springs; and

wherein the springs in the first zone and the second zone are interchangeable parts.

18. The method of claim 17 , wherein:

said packing the springs in the first pattern includes packing the springs for an entire width of the mattress in the first pattern; and

said packing the springs in the second pattern includes packing the springs for the entire width of the mattress in the second pattern.

19. The method of claim 17 , further comprising:

packing the springs in a third pattern in a third zone of the core, wherein the second zone is sandwiched between the first zone and the second zone; and

wherein the first pattern and the second pattern have the same pattern.

20. The method of claim 17 , further comprising:

assembling a second core of a second mattress that has a firmness profile different from a firmness profile created by the first and second zones of the mattress.

21. A mattress, comprising:

a first zone having springs packed in a first pattern;

a second zone having the springs packed in a second pattern that is different from the first pattern;

wherein the springs in the first zone and the second zone have the same stiffness;

wherein the springs in the entire mattress are metal coil springs that are interchangeable parts; and

wherein the springs in the first zone have a packing density that is greater than the packing density of the springs in the second zone.

22. The mattress of claim 21 , wherein:

the mattress has a width; and

the first pattern of the springs in the first zone extend for the entire width of the mattress;

the second pattern of the springs in the second zone extend for the entire width of the mattress.

23. The mattress of claim 21 , further comprising:

a third zone having the springs packed in a third pattern; and

wherein the first pattern and the third pattern are the same pattern.

24. The mattress of claim 21 , wherein:

the first pattern is a cube pattern; and

the second pattern is a hexagonal pattern.