Abstract

A ladderway system for an underground raise includes an elongate tube adapted to generally conform to the shape of the raise. The tube is of circular cross-section to generally conform to the shape of a round bored raise. The tube is formed with a longitudinal slit along its entire length, whereby the diameter of the tube can be adjusted to generally conform to the shape of the raise. The ladderway system further includes a ladder adapted to be mechanically coupled to an interior of the tube. The tube is manufactured of a sufficiently rigid and strong plastics material, such as polyurethane, so that it acts as a surface membrane or liner within the raise.

IPC Classes  ?

• E06C 1/34 - Ladders attachable to structures, such as windows, cornices, poles, or the like

Abstract

A ladderway system (10) for an underground raise comprises an elongate tube (12) adapted to generally conform to the shape of the raise. The tube (12) is of circular cross-section to generally conform to the shape of a round bored raise. The tube (12) is formed with a longitudinal slit (14) along its entire length, whereby the diameter of the tube (12) can be adjusted to generally conform to the shape of the raise. The ladderway system (10) further comprises a ladder (16) adapted to be mechanically coupled to an interior of the tube (12). The tube (12) is manufactured of a sufficiently rigid and strong plastics material, such as polyurethane, so that it acts as a surface membrane or liner within the raise.

IPC Classes  ?

• E06C 1/34 - Ladders attachable to structures, such as windows, cornices, poles, or the like
• E06C 9/02 - Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes rigidly mounted
• E21D 7/00 - Shaft equipment, e.g. timbering within the shaft
• E21F 11/00 - Rescue devices or other safety devices, e.g. safety chambers or escape ways