Sectional circular staircase

Details Sectional circular staircase Sectional circular staircase

1988-11-07

1989-09-26

Chilcot, Jr., Richard E.

Static structures (e.g., buildings)

Stepped; e.g., stair

With additional building feature

52187, 52227, E04F 1118

Patent

active

048690341

ABSTRACT:
A circular staircase in which each of the inside and outside stringers are constructed from a plurality of blocks strung together with cables. The blocks are substantially parallogram shaped with vertical ends which are bevelled to the inside. The blocks are strung end to end on tensioned cables. Shear pins inserted at the junction between adjacent blocks prevent relative vertical displacement between blocks. Spaced, horizontal treads join the inside and outside stringers together.

REFERENCES:
patent: 2471352 (1949-05-01), Safir
patent: 3021928 (1962-02-01), Blair
patent: 3418770 (1968-12-01), Allmand
Dictionarre Construction .COPYRGT.1881 by Pierre Chabat, pp. 381-382.

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