Upright extractor

• US 8,230,549 B2
• Filed: 03/13/2009
• Issued: 07/31/2012
• Est. Priority Date: 03/14/2008
• Status: Active Grant

• Current Assignee: Bissell Inc.
• Original Assignee: Bissell Homecare, Inc. (Bissell Inc.)
• Inventors: Lenkiewicz, Kenneth M., Tran, Phong H.
• Primary Examiner(s): Wilson, Lee D
• Assistant Examiner(s): MCDONALD, SHANTESE L
• Application Number:
  US12/403,816
• Publication Number:
  US 20090229069A1
• Time in Patent Office: 1,236 Days
• Field of Search: 153/20, 153/21, 153/22, 153/55, 153/56
• US Class Current: 15/320
• CPC Class Codes: A47L 11/34 Machines for treating carpets in position by liquid, foam, or vapour, e.g. by steam
• CPC Class Codes: A47L 11/4083 Liquid supply reservoirs; Preparation of the agents, e.g. mixing devices
• CPC Class Codes: A47L 11/4088 Supply pumps; Spraying devices; Supply conduits

Abstract

An upright extractor for delivering cleaning fluid to a cleaning member, removing the cleaning fluid and entrained soil from the cleaning member, and damp wiping dirt and debris off of a surface to be cleaned. A roller assembly for wiping dirt and debris off a cleaning surface is reversible. The roller assembly and a centrifugal pump are driven simultaneously and at independent speeds necessary for preferred operation with a common motor. A vented spray tip assembly delivers cleaning fluid to the cleaning member. An improved accessory tool delivers a variety of metered cleaning chemicals while also extracting the soiled fluid and debris from a surface to be cleaned.

Claims

1. An upright extractor comprising:

a foot assembly including base housing for movement along a surface to be cleaned;

a fluid supply system mounted to the base housing and including a fluid tank, a fluid distributor for depositing fluid onto the surface to be cleaned, and a fluid conduit between the fluid tank and the fluid distributor; and

a fluid recovery system mounted to the base housing and including a suction nozzle, a recovery tank, a working air conduit between the suction nozzle and the recovery tank, and a motor/fan assembly adapted to draw liquid through the suction nozzle and deposit the liquid in the recovery tank;

wherein the distributor comprises;

a spray tip housing having an inlet opening connected to the fluid conduit; and

an outlet opening connected to a spray nozzle;

a chamber formed in the spray tip housing in communication with the inlet opening and the outlet opening;

a vent opening in communication with the atmosphere and with the chamber; and

a float valve mounted in the chamber and moveable from a sealing position in sealing relationship with the vent opening to seal the chamber from the atmosphere when fluid under pressure is delivered to the chamber from the fluid conduit and a vent position in spaced relationship with the vent opening to vent the chamber to the atmosphere when the fluid in the fluid conduit is unpressurized.

2. The upright extractor of claim 1 wherein the spray tip housing has a cap opening between the atmosphere and the chamber and a cap mounted in the cap opening, and wherein the vent opening is formed in the cap.

3. The upright extractor of claim 2 and further comprising a removable panel mounted in the base housing directly above the spray tip housing for user access to the spray tip housing.

4. The upright extractor of claim 3 wherein the cap is positioned directly adjacent the removable panel.

5. The upright extractor of claim 4 wherein the removable panel is at least translucent for user visibility to the spray tip housing.

6. The upright extractor of claim 1 and further comprising a removable panel mounted in the base housing directly above the spray tip housing for user access to the spray tip housing.

7. The upright extractor of claim 6 wherein at least a portion of the removable panel is at least translucent for user visibility to the spray tip housing.

8. The upright extractor of claim 1 and further comprising a roller having an outer layer of a soft cleaning medium mounted to the base housing for contact with a surface to be cleaned and the spray tip housing is mounted in the base housing in a position to distribute cleaning fluid from the spray nozzle onto the surface of the roller cleaning medium to apply cleaning fluid to the surface to be cleaned.

9. The upright extractor of claim 8 and further comprising a deflection wall mounted above the roller and in registry with the spray nozzle, whereby cleaning fluid sprayed from the spray nozzle impinges on the deflection wall and drips onto the soft cleaning medium of the roller.

10. The upright extractor of claim 9 wherein the suction nozzle has a suction opening positioned in contact with the soft cleaning medium of the roller to remove fluid and debris therefrom.

11. The upright extractor of claim 8 wherein the roller is adapted be removably and reversibly mounted to the base housing for contacting the surface to be cleaned.

12. The upright extractor of claim 11 wherein the roller is mounted to the base housing for selective placement in two mutually exclusive positions 180 degrees perpendicular to the axis of the roller.

13. The upright extractor of claim 12 and further comprising a drive motor operably connected to the roller, and brush gears mounting the roller to the base housing for providing slippage between the roller and the drive motor in the event that a resistance created by the roller exceeds a predetermined limit.

14. The upright extractor of claim 12 wherein the roller has brush gears at each end that interface with a drive mechanism for driving the roller about a longitudinal axis.

15. The upright extractor of claim 1, wherein the distributor is removably mounted in the base housing.

16. An upright extractor comprising:

a foot assembly including a base housing for movement along a surface to be cleaned;

a fluid supply system mounted at least in part to the base housing and including a fluid tank, a fluid distributor, and a conduit between the fluid tank and the fluid distributor for depositing fluid onto the surface to be cleaned;

a fluid recovery system mounted to the base housing and including a suction nozzle, a recovery tank, a working air conduit between the suction nozzle and the recovery tank, and a motor/fan assembly adapted to draw liquid through the suction nozzle and deposit the liquid in the recovery tank; and

a roller removably and reversibly mounted in base housing for contacting the surface to be cleaned;

wherein the roller has brush gears at each end that interface with a drive mechanism for driving the roller about a longitudinal axis.

17. The upright extractor of claim 16 wherein the roller has an outer layer of a soft cleaning medium mounted to the base housing for contact with a surface to be cleaned.