Industrial vacuum cleaners

• US 3,177,635 A
• Filed: 06/22/1960
• Issued: 04/13/1965
• Est. Priority Date: 06/22/1960
• Status: Expired due to Term

• Current Assignee: Allen P. Cawl, Gustaf E. Lofgren, Robert C. Lampe
• Original Assignee: Allen P. Cawl, Gustaf E. Lofgren, Robert C. Lampe
• Inventors: Cawl, Allen P., Lampe, Robert C., Lofgren, Gustaf E.
• Application Number:
  US04/037,975
• Time in Patent Office: 1,756 Days
• US Class Current: 96/421
• CPC Class Codes: A47L 5/365 of the vertical type, e.g. tank or bucket type
• CPC Class Codes: A47L 9/102 Dust separators cyclones A47L9/16
• CPC Class Codes: A47L 9/1427 Means for mounting or attaching bags or filtering receptacles in suction cleaners; Adapters
• CPC Class Codes: A47L 9/1608 Cyclonic chamber constructions
• CPC Class Codes: A47L 9/1666 with filtering means
• CPC Class Codes: A47L 9/19 Means for monitoring filtering operation

Claims

1. IN A VACUUM CLEANER,A BASE MEMBER, AN OPEN-TOP CONTAINER FORMING A DIRT RECEIVING CHAMBER REMOVABLY SUPPORTED BY SAID BASE MEMBER, WALLS SECURED TO SAID BASE MEMBER AND DEFINING A DUST BAG ENCLOSURE OPEN AT THE TOP, HINGED COVER MEANS FOR CLOSING THE TOPS OF SAID CONTAINER AND SAID ENCLOSURE, CONDUIT MEANS FORMING AN INLET FOR INTRODUCING DIRT-LADENED AIR INTO SAID CONTAINER, A PLURALITY OF DUST BAGS REMOVABLY SUPPORTED IN SAID ENCLOSURE, AN EQUAL PLURALITY OF CONDUITS SUPPORTED BY SAID COVER MEANS AND EACH EXTENDING FROM SAID CONTAINER TO A SEPARATE ONE OF SAID DUST BAGS, AND MEANS FOR EXHAUSTING AIR FROM SAID ENCLOSURE TO INDUCE FLOW OF AIR FROM SAID INLET INTO SAID CONTAINER AND FROM SAID CONTAINER THROUGH SAID CONDUITS IN PARALLEL TO THE RESPECTIVE DUST BAGS.