Detachable non-conductive platforms for aerial boom trucks

Claim 1

In combination, a platform and an aerial boom having a substantially flat platform-supporting surface, said platform including a walkway resting upon the flat surface of said boom, spaced arms each pivotally connected at one end to a marginal portion of said walkway, a rail pivotally connected to each arm on one side of said walkway, and a plurality of longitudinally spaced pairs of transversely spaced gussets projecting downwardly from said walkway, said gussets being positioned at opposite sides of said boom when said platform is supported on said boom, means shiftable on an arm releasably anchoring said arm in substantially perpendicular relation to and above said walkway, said walkway including a marginal upturned flange, each of said arms being pivotally connected adjacent one end thereof to an upturned flange spaced above said walkway, said anchoring means including a socket formed in said walkway, said anchor and one end of said arm being adapted to project into said socket with a snug fit to anchor the arm in substantial perpendicular relation to and above said walkway.