Foundation unit with cushioned cross rails

Details Foundation unit with cushioned cross rails Foundation unit with cushioned cross rails

1977-11-07

1978-12-19

Nunberg, Casmir A.

Beds

Sofa bed

Unfolding seat

5247, 5260, A47C 2304

Patent

active

041299086

ABSTRACT:
An improved foundation unit for a mattress or the like is provided which is firmer in the center than conventional torsion spring-type foundation units while having sufficient flexibility under normal loads and weight distribution to comfortably support a body upon an overlying mattress. The foundation unit includes a resilient border which protects the edge of an overlying mattress from damage when subject to extraordinary weight concentration and a center region formed of a plurality of cross rails cushioned at least about their upper surfaces which immediately underlie the upper surface of the unit. The cushioning elements may be thick foam housings that cover at least the upper surface of the cross rails or sinuous wire springs that extend along the length of the cross rails. The cross rails themselves preferably have a limited degree of flexibility so as to better withstand high impact loads.

REFERENCES:
patent: 3085259 (1963-04-01), Sandor
patent: 3441961 (1969-05-01), Poerink
patent: 3546723 (1970-12-01), Cianipa et al.
patent: 3935605 (1976-02-01), Hutchinson
patent: 3992732 (1976-11-01), Cervisi
patent: 4068329 (1978-01-01), Gross et al.

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