Stairtread with positioning and locking mechanism

Details Stairtread with positioning and locking mechanism Stairtread with positioning and locking mechanism

1991-03-06

1992-02-18

Scherbel, David A.

Static structures (e.g., buildings)

Stepped; e.g., stair

Helical type

52183, E04F 1100

Patent

active

050882481

ABSTRACT:
A circular staircase tread (10), capable of being formed in one piece, the tread having a flexible stacking (18), positioning and locking mechanism which allows on-site adjustment of the angular positioning of the treads in relation to each other and the on site modification of the resulting staircase.

REFERENCES:
patent: 432599 (1890-07-01), Clarke
patent: 3740906 (1973-06-01), Schneider
patent: 4527367 (1985-07-01), Morellini
1985 Sweets Catalog, vol. 3, 51/29/Bo p. 7, Helix Stair.

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