Industrial suction cleaner with hand suction attachment

Claim 1

IN A MOBILE AIR-SUCTION CLEANER OF THE KIND DESCRIBED HAVING AN AIR IMPELLER, INCLUDING A CASING THEREFOR PROVIDED WITH AN INTAKE OPENING RIMMED BY AN ANNULAR FLANGE FORMING A FRUSTO-CONICAL CONSTRICTING THROAT PROJECTING TOWARDS SAID IMPELLER, A SUCTION HOOD FIXED ON SAID CASING AND HAVING A DOWNWARDLY DIRECTED INLET NOZZLE-OPENING AND COMMUNICATING WITH THE INTAKE OPENING OF SAID IMPELLER, A LENGHT OF FLEXIBLE HOSE HAVING A HAND SUCTION NOZZLE CARRIED BY AND IN COMMUNICATION WITH ONE END THEREOF, AND MEANS CARRIED ON THE OTHER END OF AND IN COMMUNICATION WITH SAID HOSE AND DETACHABLY CONNECTING AND SUPPORTING SAID OTHER END OF SAID HOSE IN COMMUNICATION WITH THE INTAKE OPENING OF SAID IMPELLER CASING, SAID MEANS INCLUDING A RIGID TUBULAR MEMBER HAVING ITS DISCHARGE END EXTENDING INTO AND SUBSTANTIALLY CONCENTRIC WITH AND SPACED FROM THE DISCHARGE END OF SAID CONSTRICTING THROAT TO FORM THEREWITH AN INJECTOR-NOZZLE SURROUNDING THE DISCHARGE END OF SAID TUBULAR MEMBER.