Patent ID: 6793563
Filing Date: 2004-09-21
Classification: B24C

Abstract:
A particulate blaster assembly for use as an attachment to a portable leaf blower comprising:an air directing tube having an inlet end configured for coupling to the portable leaf blower to receive air discharged therefrom and having a movable exhaust end formed for discharge of air and particulate material entrained in the air toward a target site; a vacuum generating structure fluidly coupled to the air discharge tube and formed to produce a partial vacuum as air passes in the tube beyond the vacuum generating structure; and a particulate material aspirator fluidly coupled to the vacuum structure and to the air discharge tube and responsive to the partial vacuum generated by the vacuum structure to aspirate a particulate material from a particulate material source into the air discharge tube for acceleration of the particulate material in the air discharge tube and discharge of air and entrained particulate material from the exhaust end and wherein, the particulate material source is provided as a volume of particulate material and wherein, the aspirator assembly is positioned in part below an upper surface of the volume of particulate material and wherein, the aspirator assembly includes a base movably supported on an upper surface of the particulate material, a vacuum conduit having an end coupled to the vacuum structure and an opposite open vacuum end, and the vacuum conduit being mounted to the base to extend downwardly therefrom into the particulate material for aspiration of particulate material under the partial vacuum generated by the vacuum structure.