Patent ID: 8245456

Claim:
A roller assembly for use with a telescopic boom apparatus including an extensible inner boom and an outer boom, the roller assembly comprising: a housing coupled to the outer boom, the housing allowing a first set of guide rails that are secured to the outer boom to pass therethrough, the housing including a first side wall, a second side wall, a forward wall, and a rear wall, wherein the forward wall and the rear wall both include a generally rectangular opening with a recess in each corner that allow the first set of guide rails to pass therethrough and a plurality of gussets, each gusset extending longitudinally between the forward wall and the rear wall, the gussets being positioned adjacent to the first side wall and the second side wall inward from outer edges of the forward wall and the rear wall; and a roller bar coupled to the first side wall and the second side wall, the roller bar configured to engage an upper portion of a second set of guide rails that are secured to the inner boom and to relieve the pressure exerted on roller wheels attached to the inner boom when the inner boom is under load.