Mattress core

1. A mattress core including:

(a) an array of strings of pocket springs extending in parallel across the mattress core; and

(b) 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 mounted over an inferior string of pocket springs, wherein each double string of said double strings is arranged between a corresponding pair of said single strings of pocket springs, and wherein each superior string of pocket springs is coupled to a corresponding inferior string of pocket springs by another fastener.

2. The mattress core claimed in claim 1 , wherein springs of each of the single strings of pocket springs have a common first rate, springs of each superior string of pocket springs have a common second rate, and springs of each inferior string of pocket springs have a common third rate.

3. The mattress core claimed in claim 2 , wherein the first rate is less than the second rate, and the first rate is less than third rate.

4. The mattress core claimed in claim 2 , wherein the third rate is less than the second rate.

5. The mattress core claimed in claim 1 , wherein pairs of said double strings are arranged between corresponding pairs of said single strings of pocket springs.

6. The mattress core claimed in claim 1 , wherein the strings of pocket springs extend between a head and foot of the mattress core.

7. The mattress core claimed in claim 1 , wherein opposed articular surfaces of pocket springs in opposed strings of pocket springs are coupled together with an adhesive.

8. The mattress core claimed in claim 1 , including top and bottom rectangular peripheral bands respectively coupled to top and bottom sections of peripheral pocket springs of the array.

9. The mattress core claimed in claim 8 , wherein the top and bottom rectangular peripheral bands are respectively coupled to top and bottom sections of peripheral pocket springs with clips.

10. A mattress including the mattress core claimed in claim 1 .

11. A method of manufacturing a mattress core including the steps of:

(a) coupling a series of strings of pocket springs together with a fastener to form an array of strings of pocket springs; and

(b) coupling the array of strings of pocket springs together with a fastener, 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 mounted over an inferior string of pocket springs, wherein each double string of said double strings is arranged between a corresponding pair of said single strings of pocket springs, and wherein each superior string of pocket springs is coupled to a corresponding inferior string of pocket springs by another fastener.

12. The method claimed in claim 11 , including the step of selecting a rate of springs of each superior string of pocket springs.

13. The method claimed in claim 11 , including the step of selecting a rate of springs of each inferior string of pocket springs.

14. The method claimed in claim 11 , including the step of selecting a rate of springs of each single string of said single strings of pocket springs.

15. The method claimed in claim 11 , wherein pairs of said double strings are arranged between corresponding pairs of said single strings of pocket springs.

16. The method claimed in claim 11 , wherein the strings of pocket springs extend between a head and foot of the mattress core.

17. The method claimed in claim 11 , wherein the step of coupling include the step of coupling articular surfaces of pocket springs in opposed strings of pocket springs are coupled together with an adhesive.

18. The method claimed in claim 11 , wherein the step of coupling include the step of coupling top and bottom rectangular peripheral bands respectively to top and bottom sections of peripheral pocket springs of the array.

19. The method claimed in claim 18 , wherein the top and bottom rectangular peripheral bands are respectively coupled to top and bottom sections of peripheral pocket springs with clips.