Patent ID: 7716774

Claim:
In combination: a) a supply of pressurized air; and b) an apparatus for treating an exposed surface, the apparatus comprising: an elongate support having a proximal region and a distal region, the proximal region engageable by a user to controllably reposition the elongate support and thereby situate the distal region at an exposed surface to be treated; and at least one flexible tube at the distal region of the elongate support through which air from the pressurized supply is directed, the elongate support constructed to allow a user to selectively and controllably position the at least one flexible tube at different locations on an exposed surface through manipulation of the proximal region, including with the distal region: a) above; b) below; and c) at the same height as the proximal region, the at least one flexible tube repeatedly moving at the distal region to at least one of: a) repeatedly contact an exposed surface at which the flexible tube is situated and b) discharge pressurized air from the supply at least one of i) against an exposed surface at which the tube is situated and ii) in a manner to control movement of matter separated at an exposed surface at which the flexible tube is situated as an incident of pressurized air from the supply being directed through the at least one flexible tube.