Mattress innerspring structure having coaxial coil units

Details Mattress innerspring structure having coaxial coil units Mattress innerspring structure having coaxial coil units

1995-03-20

1996-04-23

Oberleitner, Robert J.

Spring devices

Spring panel

Spring panel comprises vertically oriented compressible coil...

5248, 5256, F16F 300

Patent

active

055096425

ABSTRACT:
An innerspring structure for a mattress comprises a plurality of outer coils extending generally parallel with each other to collectively form top and bottom face surfaces of the innerspring structure. One or more of the outer coils has an inner coil of preferably similar shape wound within and generally coaxially with the respective outer coil. Helical lacing wire wraps adjacent end turns of the inner and outer coaxially aligned coils together to form reinforced coil units in an area of the innerspring structure to increase the firmness of an area of the mattress utilizing the invention. Helical lacing wire connects the coils of the structure together and connects the end turns of peripheral coils to a border wire surrounding the periphery of the structures at the top and bottom face surfaces.

REFERENCES:
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patent: 4781360 (1988-11-01), Ramsey
patent: 4867423 (1989-09-01), Marsh
patent: 4960267 (1990-10-01), Scott

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