Collapsible box spring

Details Collapsible box spring Collapsible box spring

1987-04-15

1988-09-20

Kashnikow, Andres

Spring devices

Spring panel

Spring means spacing loading surface vertically from plane...

5240, 5250, 5247, 267142, F16F 300, A47C 2308, A47C 2302, C21B 700

Patent

active

047719958

ABSTRACT:
A collapsible bedding foundation comprises a rectangular base frame and a rectangular wire grid. The wire grid is hingedly supported upon the frame for movement between a collapsed position and an erect position. The hinged connection between the wire grid and the base frame is achieved by a plurality of transverse spaced, parallel planar support elements pivotally connected to the base frame and the wire grid. The foundation is supported in an erect position solely by a pair of longitudinally extending, parallel planar support elements pivotally connected to the longitudinal edge of the wire grid and, when the foundation is erect, fixedly secured to the base frame.

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