Patent ID: 7971408
Filing Date: 2011-07-05
Classification: E04G

Abstract:
1. A transportable and erectable stairtower comprising: a plurality of elongate and coextensive column members generally parallel to one another and having distal and proximal ends; a plurality of elongate lateral members extending transversely between, and connected to, the column members to form levels, the levels of the lateral members located at vertically spaced positions relative to the column members, each of the lateral members bordering a side of the stairtower; a staircase extending between alternating levels of the lateral members; a wheel carriage arranged for connection to the stairtower along a side thereof; an installation section removably connected to the distal ends of the column members and arranged for transporting and erecting the stairtower; and wherein the wheel carriage is directly slidably connected to the stairtower at a distal end of the wheel carriage and directly pivotally connected to the stairtower at a proximal end of the wheel carriage such that wheels of the wheel carriage do not block access to an interior of the stairtower when the stairtower is in a vertical orientation.