Formed wire spring element for box spring assemblies

Details Formed wire spring element for box spring assemblies Formed wire spring element for box spring assemblies

1989-02-27

1990-06-12

Kashnikow, Andres

Spring devices

Spring panel

Spring means spacing loading surface vertically from plane...

5247, 5255, 5260, 5476, 267107, 267144, A47C 2304, F16F 300

Patent

active

049325353

ABSTRACT:
A limited deflection spring for use in a box spring assembly has a unitary wire body having a foot portion, an upright yieldable portion on the foot portion and a loading bearing portion at the upper end of the upright portion. The upright yieldable portion includes a pair of horizontally spaced upright columns which diverge relative to each other. Each of the upright columns is suspended between the load bearing portion and the foot portion by separate upper and lower torsion bar systems. Each of the torsion bar system includes a pair of generally horizontal torsion bars connected together by a central connecting bar. Suspension of the upright columns between separate torsion bar systems enhances lateral stability and impact load withstand capability of the spring elements. Spring elements having upwardly diverging upright columns may be mixed with elements having downwardly diverging upright columns in a box spring assembly so as to produce an optimum desired loading response in the assembly.

REFERENCES:
patent: 3561021 (1971-02-01), Slominski
patent: 3574240 (1971-04-01), Slominski
patent: 4398705 (1983-08-01), Mizelle
patent: 4470584 (1984-09-01), Mizelle
patent: 4666136 (1987-05-01), Hagemeister
patent: 4730357 (1988-03-01), Wells
patent: 4776572 (1988-10-01), Surletta
patent: 4805883 (1989-02-01), Kitchen

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