Stairway stringers constructed of cast, readily-assembled units

Details Stairway stringers constructed of cast, readily-assembled units Stairway stringers constructed of cast, readily-assembled units

1980-12-22

1983-02-15

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Stackable

Male and female connecting means

182 93, 182194, 182228, 52187, E04F 1100

Patent

active

043736092

ABSTRACT:
A stairway is constructed of one or more stringers which are assembled from a plurality of stringer units of cast material. The stringer units are so constructed as to allow for their simple and rapid assembly on-site into stringers of any desired size and configuration, including stringers of a configuration required for the construction of spiral stairways.

REFERENCES:
patent: 3474882 (1969-10-01), Ernst
patent: 4125175 (1978-11-01), Ernst
patent: 4285178 (1981-08-01), Holzkampfer
patent: 4296577 (1981-10-01), Schuette

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