Patent ID: 7674158
Filing Date: 2010-03-09
Classification: E01H

Abstract:
1. A self-propelled mobile marking removal system comprising: a mobile vehicle assembly, said mobile vehicle assembly having a longitudinal axis along a length thereof, said mobile vehicle assembly including a chassis, a high pressure liquid pump in fluid connection with a liquid reservoir contained within said chassis, said high pressure liquid pump is further in fluid connection with a blast head, said blast head having at least one high pressure nozzle delivering liquid at high pressure to a marked surface, a waste removal hose fluidly coupled with said blast head and a sump for collection of liquid and debris, said blast head positionable along a left or a right side of said chassis, a mechanical abrasion means, said mechanical abrasion means positionable along a left or a right side of said chassis in front of said blast head, in alignment with said blast head along said longitudinal axis of said mobile vehicle, said mechanical abrasion means includes at least one cylindrical grinder, a housing substantially surrounding said at least one cylindrical rotatable grinder, a debris removal hose in fluid connection with said mechanical abrasion means and further in fluid connection with a container for collection of air and debris generated by said mechanical abrasion means, hydraulically actuated means to rotate said at least one cylindrical grinder, said hydraulically actuated means being in fluid connection with a hydraulic pump whereby said mechanical abrasion means substantially removes marking material protruding above said marked surface and said blast head substantially removes any marking material extending below said marked surface.