Spiral staircase

Details Spiral staircase Spiral staircase

1976-12-06

1978-10-10

Perham, Alfred C.

Static structures (e.g., buildings)

Stepped; e.g., stair

With additional building feature

52187, 403 8, 403231, E04F 1102, E04F 1118

Patent

active

041189086

ABSTRACT:
A spiral staircase having at least one straight section and at least one curved section wherein the steps are supported at one end thereof on a wall and at the other end are suspended from a handrail and wherein the handrail is formed from straight sections having a substantially uniform height above the steps.

REFERENCES:
patent: 313193 (1885-03-01), Gaylord
patent: 1335554 (1920-03-01), Callahan
patent: 1346518 (1920-07-01), Waggoner
patent: 3328056 (1967-06-01), Hecken

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