Articulating, self-supporting staircase

Details Articulating, self-supporting staircase Articulating, self-supporting staircase

1985-01-28

1986-10-28

Pate, III, William F.

Static structures (e.g., buildings)

Stepped; e.g., stair

52187, 182178, 182194, 403297, E04F 1100

Patent

active

046190848

ABSTRACT:
A stairway construction, specifically, an articulating self-supporting staircase. The staircase comprises a plurality of individual, interconnected elements, each element having a tread and a riser. A new wedge locking means to lock the interconnected elements firmly together is disclosed. This construction allows for a variety of widths, materials and layouts of the elements and is sufficiently strong to comply with building codes yet is light weight and easy to install in a variety of configurations. Modularity of assembly and ease of construction is achieved which provides an improvemenmt over the prior art.

REFERENCES:
patent: 3473275 (1969-10-01), Lappin
patent: 3908325 (1975-09-01), Kenngott
patent: 3916591 (1975-11-01), Agterhof et al.
patent: 3964222 (1976-06-01), Geleijnse et al.
patent: 4285517 (1981-08-01), Holzkampfer et al.
patent: 4296577 (1981-10-01), Schuette
patent: 4373609 (1983-02-01), De Donato
patent: 4464076 (1984-08-01), Leibhard
patent: 4481702 (1984-11-01), Mitchell

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