Fixing mechanism for stair units facilitating adjustment of heig

Details Fixing mechanism for stair units facilitating adjustment of heig Fixing mechanism for stair units facilitating adjustment of heig

1983-09-12

1985-12-10

Kelly, Donald G.

Static structures (e.g., buildings)

Stepped; e.g., stair

52187, 182178, 411427, E04F 1102

Patent

active

045570850

ABSTRACT:
A fixing mechanism of stair units which are used for assembling a curved stair. Each stair unit has an upwardly projecting cylindrical member and a downwardly projecting cylindrical member at opposite ends. The upwardly projecting cylindrical member of the lower stair unit is inserted into the downwardly projecting member of the upper stair unit rotatably and slidably in the vertical direction. These two cylindrical members are fixed to each other by a screw member disposed on the axis of the upwardly projecting cylindrical member and a pair of nut members, which are engaged with the screw member with clamping an anchor member fixed to the downwardly projecting cylindrical member.

REFERENCES:
patent: 3474882 (1969-10-01), Ernst
patent: 4296577 (1981-10-01), Schuette
patent: 4373609 (1983-02-01), DeDonanto

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