Patent ID: 9222306
Filing Date: 2015-12-29
Classification: B66C,E06C

Abstract:
1. An access system for facilitating access to an elevated portion of a mobile crane, the access system comprising: a mounting bracket for coupling to the elevated portion of the mobile crane; a staircase having at least one support post defining an axis of inclination and upper and lower ends, and a plurality of ascending steps connected to the at least one support post, wherein the staircase is operable to pivotally couple the upper end of the at least one support post to the mounting bracket such that the staircase is pivotable about a longitudinal axis generally orthogonal to the axis of inclination such that the lower end of the at least one support post is induced to move in a lateral direction in response to pivotal motion of the at least one support post, and wherein the staircase is operable to decouple the upper end of the at least one support post from the mounting bracket; and a caster coupled to the lower end of the at least one support post for supporting the staircase on a ground surface when the mounting bracket is coupled to the elevated portion of the mobile crane and the upper end of the at least one support post is pivotally coupled to the mounting bracket.