Spring devices – Spring panel – Multistage springs
Patent
1981-03-05
1983-08-16
Spar, Robert J.
Spring devices
Spring panel
Multistage springs
267103, 5255, 5247, F16F 300, A47C 2302
Patent
active
043987052
ABSTRACT:
A box spring assembly which includes a generally rectangular frame, a welded wire grid disposed above and aligned with the frame, a plurality of upwardly extending limited deflection wire springs which are mounted at their lower ends on the frame and at their upper ends are interlocked with the welded wire grid, and corner springs which are yieldable and are supported on the corners of the frame so as to support the corners of the grid. Each of the limited deflection springs is formed at its upper end with an attaching portion that is connected to the grid merely by moving it from an initial assembly position to an interlocked position, without the requirement of any notches in the grid. This structure enables assembly of the grid and the springs without the requirement for the usual attaching clips.
REFERENCES:
patent: 997022 (1911-07-01), Tennant et al.
patent: 3359019 (1967-12-01), Pinkney
patent: 3835485 (1974-09-01), Klicki
patent: 4101993 (1978-07-01), Yates et al.
patent: 4195376 (1980-04-01), Kitchen
patent: 4207634 (1980-06-01), Kitchen et al.
patent: 4339834 (1982-07-01), Mizelle
Hoover Universal Inc.
Oberleitner Robert
Spar Robert J.
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