Coil-in coil springs and innersprings

Details Coil-in coil springs and innersprings Coil-in coil springs and innersprings

2011-03-22

2011-03-22

Conley, Fredrick (Department: 3673)

Beds

Mattress

Having innerspring-type core

C005S246000, C005S248000, C005S256000

Reexamination Certificate

active

07908693

ABSTRACT:
A mattress innerspring having coil-in-coil springs arranged in an array. Each coil-in-coil spring an outside helical coil and an inside helical coil, wherein the outside helical coil has a greater height and diameter than the inside helical coil, each coil having a dual spring rate between that of the outside helical coil and the combined spring rates of the outside and inside helical coils. The coil-in-coil springs may be pocketed or unpocketed in a mattress innerspring.

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patent: WO2008143595 (2008-11-01), None
patent: WO2009/029057 (2009-03-01), None

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