PIVOTING EXTRACTOR NOZZLE

• US 20110119861A1
• Filed: 11/19/2010
• Published: 05/26/2011
• Est. Priority Date: 11/25/2009
• Status: Active Grant

• Current Assignee: Bissell Inc.
• Original Assignee: Bissell Homecare, Inc. (Bissell Inc.)
• Inventors: Krebs, Alan J.
• Granted Patent: US 8,418,310 B2
• Time in Patent Office: Days
• 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 11/4044 Vacuuming or pick-up tools; Squeegees

Abstract

An extractor comprises a foot assembly supported by at least one wheel at a rearward portion thereof and at least one rotatable agitator at a forward portion thereof, a fluid delivery system, a fluid recovery system and an extension with a first end aligned with an inlet for an extraction path and a second end in register with a surface to be cleaned. The foot assembly can be traversed over the surface to be cleaned in alternating forward and rearward movements. Movement of the foot assembly in a rearward direction supports the forward portion of the foot assembly on the extension in a first position and the at least one agitator and movement of the foot assembly in a forward direction shifts support of the forward portion of the foot assembly off of the extension in a second position.

Claims

1. An extractor comprising:

a foot assembly supported by at least one wheel at a rearward portion thereof and at least one rotatable agitator at a forward portion thereof, wherein the foot assembly is traversed over a surface to be cleaned in alternating forward and rearward movements;

a fluid delivery system for delivering a cleaning fluid to a surface to be cleaned;

a fluid recovery system for extracting fluid and debris from the surface to be cleaned through an extraction path to a recovery tank; and

an extension with a first end aligned with an inlet for the extraction path and a second end in register with the surface to be cleaned,

wherein movement of the foot assembly in a rearward direction supports the forward portion of the foot assembly on the extension in a first position and movement of the foot assembly in a forward direction shifts support of the forward portion of the foot assembly off of the extension in a second position.

2. The extractor of claim 1 wherein, in the first position, the first end of the extension is fluidly coupled with the inlet of the extraction path, and in the second position, the first end of the extension is disengaged from the inlet.

3. The extractor of claim 1 and further comprising a sealing member positioned between the first end of the extension and the inlet of the extraction path.

4. The extractor of claim 1 wherein in the first position the extension lifts the forward portion of the foot assembly to reduce the amount of contact that at least one of the at least one rotating agitator has with the surface to be cleaned.

5. The extractor of claim 1 wherein in the second position the forward portion of the foot assembly is not lifted by the extension and the amount of contact that at least one of the at least one rotating agitator has with the surface to be cleaned is increased.

6. The extractor of claim 1 and further comprising a hinge pivotably mounting the extension to the foot assembly between at least the first and second positions.

7. The extractor of claim 6 and further comprising a position limiter associated with the hinge to prevent rotational movement of the extension beyond the second position during forward movement of the foot assembly.

8. The extractor of claim 6 and further comprising a cam located adjacent the second end of the extension for biasing the extension into the first position against the surface being cleaned during rearward movement of the foot assembly.

9. The extractor of claim 8 wherein the cam comprises an arcuate surface extending rearwardly and upwardly from the second end of the extension.

10. The extractor of claim 8 and further comprising a seal compressed between the first end of the extension and the inlet for the extraction path when the extension is in the first position.

11. The extractor of claim 1 wherein in the first position, fluid and debris are being extracted from the surface to be cleaned through the extraction path and in the second position, fluid and debris is not extracted from the surface to be cleaned through the extraction path.

12. The extractor of claim 1 wherein at least one of the at least one agitators is in contact with the surface to be cleaned during the forward and rearward movement of the foot assembly.

13. The extractor of claim 1 wherein movement of the foot assembly in the forward direction shifts support of the forward portion of the foot assembly onto the at least one rotating agitator.

14. The extractor of claim 1, wherein the extractor is an upright extractor having a handle assembly pivotally coupled to the foot assembly.