Collection devices

Details Collection devices Collection devices

A - Human Necessities

47

L

A47L 5/12 (2006.01) A47L 5/14 (2006.01) A47L 9/00 (2006.01) A47L 9/08 (2006.01)

Patent

CA 2098940

ABSTRACT In more detail the apparatus comprises a duct for transporting material entrained in a stream of pressurised primary air from a collection mouth at an upstream end of the duct to a downstream region of the duct for collection. at least one primary air inlet opening into the duct for delivering pressurised air to form a primary air stream directed generally downstream of the duct, at least one secondary air outlet for delivering pressurised air to form a secondary air stream directed onto an area of the surface confronting the collection mouth, the secondary air stream serving to dislodge material on the said confronting area for entrainment in the primary air stream and transportation from the collection mouth to the downstream region of the duct for collection.

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