Accessory tool for a vacuum cleaner

• US 8,230,550 B2
• Filed: 03/03/2008
• Issued: 07/31/2012
• Est. Priority Date: 03/05/2007
• Status: Active Grant

• Current Assignee: Bissell Inc.
• Original Assignee: Bissell Homecare, Inc. (Bissell Inc.)
• Inventors: Krebs, Alan J., Medema, Douglas J., Miner, Jonathan L., Nguyen, Tom Minh
• Primary Examiner(s): REDDING, DAVID A
• Application Number:
  US12/041,007
• Publication Number:
  US 20080216273A1
• Time in Patent Office: 1,611 Days
• Field of Search: 152/462, 153/44, 153/20, 153/22, 153/47, 153/53, 154/29, 15D/IG.3
• US Class Current: 15/344
• CPC Class Codes: A47L 7/0009 with means mounted on the nozzle; nozzles specially adapted for the recovery of liquid
• CPC Class Codes: A47L 7/0028 Security means, e.g. float valves or level switches for preventing overflow
• CPC Class Codes: A47L 7/0038 with means for emptying the tanks
• CPC Class Codes: A47L 7/0042 Gaskets; Sealing means
• CPC Class Codes: A47L 9/06 with fixed, e.g. adjustably fixed brushes or the like
• CPC Class Codes: A47L 9/0653 with mechanical actuation, e.g. using a lever

Abstract

An accessory tool according to the present invention comprises a recovery tank assembly for removing fluid and dirt from a surface to the cleaned and storing the recovered fluid and dirt. The recovery tank assembly comprises a suction nozzle in fluid communication with a recovery tank. The accessory tool further comprises a fan/turbine assembly including a turbine-driven suction fan for generating suction at the suction nozzle, which draws liquid and air into and through the accessory tool. The turbine-driven suction fan can be magnetically coupled with the turbine. The accessory tool can further comprise a fluid dispensing assembly for storing and distributing fluid to the surface to the cleaned. The fluid dispensing assembly can comprise a turbine-driven fluid pump. The accessory tool can further comprise an agitator assembly that can be moved from a use to a non-use orientation to allow the accessory tool to alternately be used for scrubbing the surface to the cleaned and for extracting fluid from the surface to be cleaned. The recovery tank can further comprise a rotating outlet conduit with an inlet opening that will have an upward orientation when the recovery tank is tilted.

Claims

1. An accessory tool for use in connection with a vacuum cleaner, comprising:

a housing having a suction opening adapted to be connected to a vacuum hose;

a suction nozzle;

a recovery tank in fluid communication with the suction nozzle;

a turbine rotatably mounted within a turbine chamber having an inlet opening in fluid communication with the atmosphere and an outlet opening connected to the suction opening for rotatably driving the turbine with suction from the vacuum hose;

a suction fan rotatably mounted within a suction fan chamber having an inlet opening in fluid communication with the suction nozzle through the recovery tank for depositing fluid that is drawn in through the suction nozzle into the recovery tank and an outlet opening in fluid communication with the atmosphere; and

a coupling between the turbine and the suction fan, whereby the turbine drives the suction fan when suction is applied at the suction opening.

2. The accessory tool from claim 1 and further comprising a fluid dispensing assembly for distributing cleaning fluid onto a surface to be cleaned.

3. The accessory tool from claim 2, wherein the fluid dispensing assembly comprises a fluid pump driven by the turbine.

4. The accessory tool from claim 1 and further comprising an agitator assembly associated with the suction nozzle and rotatably mounted with respect to the suction nozzle for movement between a first position in which the agitator is in contact with a surface to be cleaned and the suction nozzle is spaced from the surface to be cleaned, and a second position in which the suction nozzle is in contact with the surface to be cleaning and the agitator is spaced from the surface to be cleaned.

5. The accessory tool from claim 1, and further comprising an outlet conduit mounted for rotation within the recovery tank about an axis of rotation and having an inlet opening in fluid communication with the recovery tank and an outlet opening in fluid communication with the suction fan chamber, wherein the outlet conduit is constructed to rotate so that the inlet opening will have a upward orientation when the axis of rotation is non-vertical and so that the inlet opening will be above a level of fluid in the recovery tank.

6. The accessory tool from claim 1, wherein the coupling between the turbine and the suction fan is a magnetic coupling.

7. The accessory tool from claim 1, wherein the turbine and suction fan are oriented along a generally vertical axis.

8. The accessory tool from claim 1 and further comprising a separator plate that separates the turbine chamber from the suction fan chamber.

9. The accessory tool from claim 1, wherein the recovery tank comprises an air/liquid separator for separating air from liquid drawn into the recovery tank through the suction nozzle.

10. An accessory tool for use in connection with a vacuum cleaner, comprising:

a housing having a suction opening adapted to be connected to a source of suction;

a suction nozzle;

a recovery tank in fluid communication with the suction nozzle; and

an outlet conduit mounted for rotation within the recovery tank about an axis of rotation and having an inlet opening in fluid communication with the recovery tank and an outlet opening in fluid communication with the source of suction;

wherein the outlet conduit is constructed to rotate so that the inlet opening will have a upward orientation when the axis of rotation is non-vertical and so that the inlet opening will be above a level of fluid in the recovery tank.

11. The accessory tool from claim 10, wherein the outlet conduit comprises a weight in opposing relation to the inlet opening.

12. The accessory tool from claim 10, wherein the inlet opening is transverse to the axis of rotation.

13. The accessory tool from claim 12, wherein the outlet opening is coaxial with the axis of rotation.