Patent ID: 8567009

Claim:
A suction nozzle assembly comprising: a housing with a suction inlet adapted to be interconnected with a suction source, the housing further having a fixed plate mounted to an underside of the housing and having at least one inlet opening fluidly interconnected with a working air conduit; and a shuttling plate having at least one first nozzle inlet and at least one second nozzle inlet and mounted to an underside of the fixed plate for movement between a first position wherein the shuttling plate at least one first nozzle inlet is in fluid register with the fixed plate at least one inlet opening and a second position wherein the shuttling plate at least one second nozzle inlet is in fluid register with the fixed plate at least one inlet opening; wherein the shuttling plate further comprises on an underside thereof debris guides that are configured to guide debris into the at least one first nozzle inlet when the shuttling plate is in the first position and to guide debris into the at least one second nozzle inlet when the shuttling plate is in the second position.