Vacuum cleaner

• US 3,365,864 A
• Filed: 02/24/1964
• Issued: 01/30/1968
• Est. Priority Date: 02/23/1963
• Status: Expired due to Term

• Current Assignee: Yoshitomo Iizima
• Original Assignee: Yoshitomo Iizima
• Inventors: YOSHITOMO IIZIMA
• Application Number:
  US04/346,920
• Time in Patent Office: 1,436 Days
• US Class Current: 55/471
• CPC Class Codes: A47L 9/125 funnel-shaped
• CPC Class Codes: A47L 9/1409 Rigid filtering receptacles dust collecting receptacles for cyclones A47L9/1683
• CPC Class Codes: Y10S 55/03 Vacuum cleaner

Claims

1. A VACUUM CLEANER COMPRISING A HOUSING HAVING AN OPEN END AND A DISCHARGE PORT IN THE OTHER END AND A FRONT COVER;

AN INTAKE PORT IN SAID FRONT COVER;

A DUST FILTERING DEVICE POSITIONED IN THE HOUSING;

A FAN FOR INTRODUCING SUCTION AIR CONTAINING DUST INTO SAID DEVICE POSITIONED INTERMEDIATE THE FILTERING DEVICE AND THE DISCHARGE PORT;

AND AN ELECTRIC MOTOR DRIVING SAID FAN;

SAID DUST FILTERING DEVICE CONSISTING ESSENTIALLY OF THREE INDIVIDUAL FILTER RECEPTACLES IN NESTED POSITION, EACH HAVING AN INLET OPENING FACING SAID INTAKE PORT;

THE INNER RECEPTACLE BEING OF RELATIVELY LARGE MESH AND PROVIDED WITH A PERIMETRICAL FLANGE OF THE INLET THEREOF CLAMPED BETWEEN SAID FRONT COVER AND THE HOUSING AT THE OPEN END THEREOF;

THE INTERMEDIATE BAG BEING OF AN AIR-PERMEABLE SYNTHETIC ORGANIC RESIN FOAM FINE FILTER;

AND THE OUTER BAG BEING OF FINE MESH;

AND PERIMETRICAL PACKING MEANS PROVIDED ABOUT THE INLET OF THE OUTER RECEPTACLE INTERPOSED BETWEEN SAID FLANGE AND THE OPEN END OF THE HOUSING AND BEING CLAMPED BETWEEN THE COVER AND THE OPEN END OF THE HOUSING HOLDING ALL THREE RECEPTACLES IN CO-AXIAL NESTED RELATION.