Vacuum cleaner cannister with removable bag

• US 6,178,590 B1
• Filed: 03/20/2000
• Issued: 01/30/2001
• Est. Priority Date: 03/20/2000
• Status: Expired due to Fees

• Current Assignee: Lindsey Manufacturing Co.
• Original Assignee: Lindsey Manufacturing Co.
• Inventors: Lindsay, Edward W. Jr., Lindsay, Winston S. III
• Primary Examiner(s): MOORE, CHRISTOPHER K
• Application Number:
  US09/528,932
• Time in Patent Office: 316 Days
• Field of Search: 153/47, 153/52, 153/53, 153/39, 153/271, 553/79, 554/29
• US Class Current: 15/327.1
• CPC Class Codes: A47L 9/1418 Impermeable dust collecting bags
• CPC Class Codes: A47L 9/1683 Dust collecting chambers; Dust collecting receptacles

Abstract

A vacuum cleaner has a removable bottom cannister that receives the refuse of the cleaning process. The bottom cannister is fitted with a plate forming an air channel along a portion of the interior side wall of the cannister. When air flows across the top of the air channel, as from cyclonic motion, suction occurs that is used to draw down a liner, or removable bag, against the inside of the cannister and thereby to prevent the liner from floating up and being drawn into the outlet, which would block the operation of the vacuum cleaner. The liner is positioned to receive the refuse and is desirable for reasons of convenience and hygiene during the process of emptying the cannister. In addition, the air channel can be fitted with a clip to aid in the insallation of the liner. The cannister can also be fitted with an interior hood or cone to optimize the flow of air across the top of the air channel.

Claims

1. In a vacuum cleaner consisting of a suction pump with motor, an air intake, an air exhaust, and a refuse receiving cannister with sidewalls and a bottom and located on a bottom of the cleaner, the cannister being open at the top to accommodate a flexible liner bag of sufficient size to fill the cannister, the improvement comprising a channel member extending generally from top to bottom along an interior sidewall of the cannister, the channel member being open at top and bottom and situated between the bag and the cannister sidewall, and the air intake comprising a duct angled obliquely relative to the longitudinal axis of the cannister so that incoming air swirls about the interior of the vacuum cleaner and cannister in a cyclonic pattern inducing a suction through the top of said channel member sufficient to hold the liner bag against the cannister sidewalls and bottom.

2. The improvement set forth in claim 1 wherein the channel member has side openings therealong from top to bottom, which tend to pull the bag tight thereagainst.

3. The improvement set forth in claim 1 including a cone mounted in said cleaner which extends downwardly into said cannister.

4. The improvement set forth in claim 1 wherein said channel member has a clip mounted at the top thereof to affix the bag thereto.