Access device

A retractable access device adapted to be moved between a first contracted configuration and a second expanded configuration, the access device comprising:

• a landing;
• at least a pair of tread steps, including at least one intermediate step, and, a final step;
• a pair of linkage assemblies, each linkage assembly being pivotally attached to a respective side edge of each step, and includes a plurality of pivotally connected links to support and effect upward and downward movement of each tread step relative to said landing;
• and,
• a pair of guide rails, each guide rail extending substantially downwardly from said landing to guide said linkage assemblies;
• and,
• a pair of guide rollers, each guide roller extending from an intermediate pivot point of an uppermost pair of links, and adapted to engage with a respective guide rail to guide said step during upward/downward movement of said device;
• wherein, each linkage assembly is adapted to move generally outwardly and inwardly relative of the sides of said access device as said device moves between the contracted and expanded configurations.