Patent ID: 8719999

Claim:
A mobile surface cleaner comprising: a mobile body configured to travel over a surface and comprising a fitting; at least one wheel connected to the mobile body to move the mobile body across the surface; a source of a fluid; a sprayer hose connectable to the fitting on the mobile body; a high pressure spray gun connectable to the sprayer hose and having a spray nozzle; a flow path, from the fluid source to the fitting; a pump in the flow path; an electrolysis cell, which electrolyzes the fluid by electrolysis and comprises first and second electrically conductive electrodes, which are separated by a gap in fluid communication with the flow path, wherein the gap lacks an ion exchange membrane and wherein the flow path combines all of a first electrochemically-activated liquid produced at the first electrode chamber with all of a second electrochemically-activated liquid produced at the second electrode chamber without valving, and the flow path is configured to dispense substantially all of the first and second electrochemically-activated liquids through the fitting, upon electrochemical activation, without storing either of the first or second electrochemically-activated liquids; and a control circuit coupled to the pump and the electrolysis cell and configured to energize the pump to pump the fluid along the flow path and, while the pump is energized, to energize the electrolysis cell to electrochemically activate the liquid that is passed through the electrolysis cell.