Means for forming a structure of an optional curve

Details Means for forming a structure of an optional curve Means for forming a structure of an optional curve

1977-12-21

1979-01-02

Murtagh, John E.

Fences

Rail

52187, 256 65, E04B 1714

Patent

active

041323912

ABSTRACT:
The present invention relates to means for forming a structure of an optional curve such as a smooth spiral or the like, and more particularly means for forming a structure of a plane curve such as circle or ellipse or the like, or a cubic curve such as spiral ascending with a constant pitch. The structure of an optional curve is applicable to the handrails of the spiral stairs of building, or the rails of various curve in ships, flower beds and/or the like.

REFERENCES:
patent: 3332179 (1967-07-01), Toti
patent: 3357681 (1967-12-01), Souza
patent: 3733055 (1973-05-01), Hughes
patent: 3999335 (1976-12-01), Nagy

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