Pressure washer

A pressure washer for cleaning dirt and debris out of grooves in concrete, asphalt and similar surfaces, comprising:

• a cleaning hood;
• said cleaning hood having a cover plate;
• said cover plate having a spray nozzle therein for spraying a liquid under pressure into a groove to flush dirt and debris out of the groove and suspend and/or dissolve the dirt and debris in the liquid for removal;
• said cover plate having an exhaust port therein for withdrawing the liquid containing the suspended and/or dissolved dirt and debris;
• said spray nozzle being directed in a downward direction and toward a location beneath said exhaust port;
• said spray nozzle being located in a forward portion of said cover plate and said exhaust port being located in said cover plate rearward of said spray nozzle;
• said spray nozzle and said exhaust port being substantially centered on a centerline of said cleaning hood;
• said cleaning hood having a flexible skirt extending downward from a periphery of said cover plate to form a less than air tight seal with a surface containing the groove being cleaned;
• said cleaning hood having adjustable spacing means located in said forward portion of said cover plate on either side of said centerline for spacing said flexible skirt of said cleaning hood a selected distance above the surface containing the groove being cleaned to provide a less than air tight seal between a lower peripheral edge of said flexible skirt and the surface containing the groove being cleaned;
• said cleaning hood including a guide means, extending below said spacing means, to be received within the groove to keep said spray nozzle and said exhaust port substantially centered over the groove;
• and
• handle means extending upward from and secured to said cleaning hood;
• said handle means including a liquid supply line means for connecting said spray nozzle to a source of the liquid under pressure;
• and said handle means including an exhaust conduit means for connecting said exhaust port to a wet-dry vacuum means for creating a suction under said cleaning hood to withdraw the liquid containing the suspended and/or dissolved dirt and debris from said cleaning hood.

A pressure washer for cleaning dirt and debris out of grooves in concrete, asphalt and similar surfaces, comprising:

• a cleaning hood;
• said cleaning hood having a cover plate;
• said cover plate having a spray nozzle therein which is directed in a downward direction for spraying a liquid downward, under pressure, into a groove to flush dirt and debris out of the groove and suspend and/or dissolve the dirt and debris in the liquid for removal;
• said cover plate having an exhaust port therein for withdrawing the liquid containing the suspended and/or dissolved dirt and debris;
• said cleaning hood having a skirt extending downward from a periphery of said cover plate to form a less than air tight seal with a surface containing the groove;
• liquid supply line means for connecting said spray nozzle of said cleaning hood to a source of the liquid under pressure;
• handle means extending upward from and secured to said cleaning hood for manipulating said pressure washer;
• said handle means including exhaust conduit means for connecting said exhaust port of said cleaning hood to a vacuum means for creating a suction under said cleaning hood to withdraw the liquid containing the suspended and/or dissolved dirt and debris from said cleaning hood;
• and
• spacing means for spacing said skirt of said cleaning hood a selected distance above the surface containing the groove being cleaned to provide a less than air tight seal between a lower peripheral edge of said skirt and the surface containing the groove being cleaned;
• said spacing means being adjustable whereby said selected distance may be changed.