Spring devices – Spring panel – Spring panel comprises vertically oriented compressible coil...
Patent
1981-12-21
1984-12-18
Halvosa, George E. A.
Spring devices
Spring panel
Spring panel comprises vertically oriented compressible coil...
5248, 5269, 267 93, 267 95, F16F 304, A47C 2304
Patent
active
044887124
ABSTRACT:
A spring assembly for mattresses, innersprings, and the like. The assembly comprises longitudinal rows of coils, each row comprising a continuous length of wire formed into a plurality of coils interconnected by Z-shaped wire segments alternately disposed at the top and bottom of the coils. Adjacent rows of coils are connected by longitudinally extending helical lacing wires wound through overlapping Z-shaped wire segments. By lacing the rows of coils longitudinally, the spacing between adjacent coils may be varied in selected longitudinal sections of the unit so as to vary the coil count and thus the firmness of selected areas of the assembly, as for example the center section. Furthermore, by so lacing the rows of coils, a single set-up of forming and assembly machine may be used to manufacture various widths of mattresses, as for example, twin, double or queen and king size units.
REFERENCES:
patent: 630967 (1899-08-01), Bonnell
patent: 1943067 (1934-01-01), Foster
patent: 3657749 (1972-04-01), Norman
patent: 3685062 (1972-08-01), Pearson et al.
patent: 3911511 (1975-10-01), Higgins et al.
patent: 3916464 (1975-11-01), Tyhanic
patent: 4358097 (1982-11-01), Zopletal et al.
Halvosa George E. A.
Leggett & Platt Incorporated
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