Box spring with wire columns and partial coils

Details Box spring with wire columns and partial coils Box spring with wire columns and partial coils

1988-09-23

1989-09-19

Reger, Duane A.

Spring devices

Spring panel

Spring means spacing loading surface vertically from plane...

5246, A47C 23043

Patent

active

048674249

ABSTRACT:
A box spring assembly that comprises a rectangular frame and a mattress support deck above the frame is supported by a plurality of deck support springs arranged between the deck and the frame. Each spring has a deck attaching portion, a yieldable portion, and a foot portion. The yieldable portion of the springs comprises a coil spring portion joining a wire column portion having one or more straight torsion bar portions thereby combining the characteristics of limited deflection columns and for torsion bars with the equalized torsional stresses of a coil spring to provide improved impact withstand capability and improved impact loading response and a soft firmness in a box spring assembly.

REFERENCES:
patent: 3657749 (1972-04-01), Norman
patent: 3852838 (1974-12-01), Slominski et al.
patent: 4662011 (1987-05-01), Duvivier
patent: 4726572 (1988-02-01), Flesher et al.

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