Aligned mattress spring core

Details Aligned mattress spring core Aligned mattress spring core

1996-05-13

1997-12-23

Oberleitner, Robert J.

Spring devices

Spring panel

Spring means spacing loading surface vertically from plane...

5256, 267 91, F16F 306, A47C 2500

Patent

active

056999992

ABSTRACT:
A mattress inner spring core comprising a plurality of coil springs arranged in longitudinally extending columns and transversely extending rows. Each coil spring has an identically configured upper and lower end turn between which are a plurality of central convolutions defining a spring axis. Each end turn comprises first and second offset legs connected by a linear base web. A portion of a first leg of one end turn overlaps a portion of a second leg of an adjacent end turn in an overlapping region. Helical lacing wires encircle the legs of adjacent end turns to connect rows of springs. Each helical lacing wire has multiple revolutions encircling the overlapped legs of adjacent end turns with the same number of revolutions of the lacing wire encircling the overlapped portions of the legs and at least one complete revolution encircling a non-overlapped portion of the first and second legs of the end turns.

REFERENCES:
patent: 3161408 (1964-12-01), Molt
patent: 3653081 (1972-04-01), Davis
patent: 3716874 (1973-02-01), Thomas, Jr.
patent: 4609186 (1986-09-01), Thoenen
patent: 4726572 (1988-02-01), Flesher et al.
patent: 4781360 (1988-11-01), Ramsey
patent: 4817924 (1989-04-01), Thoenen
patent: 5509642 (1996-04-01), Wells
patent: 5584083 (1996-12-01), Ramsey et al.

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