Box spring assembly using modular coil springs

Details Box spring assembly using modular coil springs Box spring assembly using modular coil springs

1974-10-29

1976-03-23

Marbert, James B.

Spring devices

Spring panel

Spring means spacing loading surface vertically from plane...

F16F 302

Patent

active

039456277

ABSTRACT:
A resilient foundation assembly for furniture expecially a box spring for supporting a mattress. A frame means which defines a generally planar foundation area, a grid means overlaying and spaced in a plane above and generally parallel to the foundation area plane and a plurality of spring units resiliently connected between the frame means and grid means. The spring units are formed of a single length of wire and comprise two end segments and a plurality of dual counter reaction modular coil springs contiguous therebetween. Each dual counter reaction spring comprises two leg sections extending downwardly from the grid plane toward the planar foundation area formed by the frame means, the two leg sections are joined by a bridging segment of wire lying in the grid plane. Each leg section is formed by linear segments of wire positioned in predetermined angular relationships and joined by a coil section of wire.

REFERENCES:
patent: 1430249 (1922-09-01), Morse
patent: 2829706 (1958-04-01), Markle
patent: 3042395 (1962-07-01), Cole et al.

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