Box spring assembly

Details Box spring assembly Box spring assembly

1987-05-01

1988-04-26

Kashnikow, Andres

Spring devices

Spring panel

Spring means spacing loading surface vertically from plane...

5247, 5255, 5276, F16F 300, A47C 2304

Patent

active

047399775

ABSTRACT:
An improved spring unit for a box spring assembly in which a grid assembly is supported above a frame by a plurality of such spring units. The spring units provide self-limited deflection to prevent them from taking a permanent set after being overloaded. Each unit has two separate legs which support the spring assembly grid assembly to reduce point loadings on the grid assembly. The top portion of the spring spreads out forces over a large area on the grid to further reduce point loading. The configuration of the spring units enables them to be stacked densely without interlacing or twisting. The spring units include a center base bar, a pair of torsion bars extending perpendicularly therefrom, a center torsion bar which is connected to the upper and lower portions of the spring by connecting bars, and a top portion having a torsion bar and a pair of bar members extending in the same horizontal plane.

REFERENCES:
patent: 3990121 (1976-11-01), Whitaker
patent: 4339834 (1982-07-01), Mizelle
patent: 4470584 (1984-09-01), Mizelle
patent: 4475724 (1984-10-01), Hancock
patent: 4684111 (1987-08-01), Hagemeister

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