Robot vacuum cleaner with air agitation

A robot vacuum cleaner comprising:

• a cleaner body having a suction port through which contaminants can be drawn in from a cleaning surface;
• an air agitation device mounted in said cleaner body to provide an air jet to the cleaning surface to dislodge contaminants, said air agitation device comprising an air inlet equipped with a filter for filtering contaminant-laden air drawn in through said suction port, an air jet exit opening proximate said suction port, and a circulating path to jet filtered air through said air jet exit opening;
• an agitation brush operatively coupled to said suction port to provide additional agitation to the cleaning surface;
• a circulating pump in said circulating path operatively coupling said air inlet and said air jet exit opening;
• and
• a skirt sealing member of a continuous resiliently deformable material protruding from a lower surface of said cleaner body to contact the cleaning surface and surrounding both said suction port and said air jet exit opening for containing dislodged contaminants.