Stairway unit

Details Stairway unit Stairway unit

1976-02-06

1977-01-25

Murtagh, John E.

Static structures (e.g., buildings)

Stepped; e.g., stair

Tread unit on horizontal tread member connected to riser

E04F 1112

Patent

active

040043843

ABSTRACT:
A stairway unit for a multi-level construction including briefly: a one-piece metal member forming both treads and risers, parallel metal stringer members each presenting a vertical planar side to the one-piece metal member; and the edges only of the one-piece metal member being connected to the stringers as by welding. No additional tread members are required and the stairway may be used as is, or with the addition of pads and carpeting to the treads and/or risers or with other suitable covers.

REFERENCES:
patent: 2193146 (1940-03-01), Skeel
patent: 2205859 (1940-06-01), O'Donnell
patent: 2377994 (1945-06-01), Cocken
patent: 3257761 (1966-06-01), Klein
patent: 3839840 (1974-10-01), Miller

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