HELICAL STAIRCASE Russian patent published in 1999 - IPC

Abstract RU 2133808 C1

FIELD: construction industry. SUBSTANCE: helical staircase has separate steps made from natural stone and attached to column. Each step has reinforcing part attached with its one end to column and with its other end to step by means of tension part for prestressing reinforcing part. EFFECT: simplified manufacture and assembling of staircase. 10 cl, 3 dwg

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RU 2 133 808 C1

Authors

Vakhenfel'D Val'Ter

Dates

1999-07-27—Published

1995-04-15—Filed