Patent ID: 7080888

Claim:
A hydro-demolition system comprising: a) a carriage reciprocably mounted for horizontal movement on a beam carried on a vertically extending boom, an elevation of said beam being linearly adjustable along said boom; b) a pair of fluid nozzles mounted on said carriage, each of said nozzles being connected to a plurality of sources of pressurized fluid, said nozzles being spaced apart substantially parallel to a direction of elongation of said beam, a manifold for each nozzle including a plurality of inlets and a single outlet, a separate conduit connected between each said single outlet of each manifold and a respective one of said nozzles, each inlet of each manifold being connected to a separate source of pressurized fluid; c) means for rotating each nozzle with respect to said carriage; d) means for adjusting elevation of said carriage with respect to a ground surface; e) said boom mounted on a robot vehicle supported on a plurality of wheels including two forward wheels, said boom extending forward of said forward wheels and said carriage extending forward of said boom; f) said boom including a bracket above said beam for attaching an upper region of said boom to an adjacent wall surface.