Steel span for use in mattress foundation frames

Details Steel span for use in mattress foundation frames Steel span for use in mattress foundation frames

1995-02-02

1996-05-28

Grosz, Alexander

Beds

Bedsteads

Having bottom

5247, A47C 2302

Patent

active

055199038

ABSTRACT:
An improved steel span for use in mattress foundations has increased strength and rigidity characteristics achieved by a longitudinal ridge formed in a center section of the span between vertical legs of the span. The central location of the ridge in the cross-section of the span centers and thereby improves precise formation of symmetrical halves of the span which in turn insures accurate alignment of opposing spring-receiving slots formed in the vertical legs. Widened horizontally disposed base sections at the bottom of the vertical legs further increase rigidity and provide a greater surface area for attachment of the spans to a foundation frame.

REFERENCES:
patent: D234566 (1975-03-01), Watts
patent: 773312 (1904-10-01), D'Arcy
patent: 1095712 (1914-05-01), D'Arcy
patent: 2237585 (1941-08-01), De Fries
patent: 3506987 (1970-04-01), Bielak
patent: 3755833 (1973-09-01), Slominski
patent: 3916463 (1975-11-01), Higgins
patent: 3971081 (1976-07-01), Roe
patent: 4129908 (1978-12-01), Wagner
patent: 4163296 (1979-08-01), Kitchen et al.
patent: 4218790 (1980-08-01), Mizelle
patent: 4861002 (1989-08-01), Dabney

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