Self-cleaning features for extraction cleaners

Patent metadata

Field	Value
Publication number	US-11992165-B2
Application number	US-202318301414-A
Country	US
Kind code	B2
Filing date	Apr 17, 2023
Priority date	Oct 6, 2017
Publication date	May 28, 2024
Grant date	May 28, 2024

Abstract

Self-cleaning features for extraction cleaners and attachments for extraction cleaners, such as accessory tools, wands, and/or hoses, are provided. The self-cleaning features are configured redirect cleaning fluid from a fluid supply system of the extraction cleaner into a working air or fluid recovery path of the extraction cleaner, including, but not limited to into the working air or fluid recovery path of a tool, wand, and/or hose of the extraction cleaner.

First claim

What is claimed is:

1. A system for cleaning a recovery path of an extraction cleaner, the extraction cleaner having a fluid delivery system comprising a supply container and a recovery system comprising a recovery container, the system comprising:
a wand fluidly coupled with the fluid delivery system and the recovery system, the wand comprising:
a fluid delivery pathway adapted for fluid communication with the supply container and having a wand fluid connector; and
an airflow pathway adapted for fluid communication with the recovery container and having a wand airflow connector; and
a wand cap configured for attachment to the wand, the wand cap being defined by a cap housing with a cap fluid connector and a cap airflow connector; and

wherein the cap housing forms a cap fluid pathway when the cap fluid connector is fluidly coupled with the wand fluid connector and the cap airflow connector is fluidly coupled with the wand airflow connector, the cap fluid pathway directing flow of a cleaning fluid between the wand fluid connector and the wand airflow connector.

2. The system of claim 1 , wherein:
the cap housing includes a first internal fluid channel in fluid communication with the cap fluid connector, and a second internal fluid channel in fluid communication with the cap airflow connector; and
the cap housing includes a wall separating the first internal fluid channel and the second internal fluid channel, the wall having at least one passage opening for guiding the cleaning fluid from the wand fluid connector into the wand airflow connector when the wand cap is installed on the wand.

3. The system of claim 1 , wherein at least a portion of the cap housing is transparent.

4. The system of claim 1 , wherein:
the cap housing includes an end wall, and a peripheral side wall extending from the end wall to an open opposite end; and
the wand cap is adapted to be attached to the wand at the open opposite end of the cap housing.

5. The system of claim 4 , wherein:
the wand airflow connector defines an inlet end of the wand; and
the end wall is spaced from the inlet end of the wand to permit working air to flow from the wand cap through the airflow pathway when the wand cap is installed on the wand.

6. The system of claim 1 , wherein the wand cap further includes at least one air vent formed in the cap housing, the at least one air vent being in fluid communication with the cap fluid pathway.

7. The system of claim 6 , wherein:
the cap housing includes an end wall, and a peripheral side wall extending from the end wall to an open opposite end; and
the at least one air vent is disposed in the peripheral side wall.

8. The system of claim 1 , wherein:
the cap housing includes a first internal fluid channel in fluid communication with the cap fluid connector, and a second internal fluid channel in fluid communication with the cap airflow connector;
the cleaning fluid is directed through the wand fluid connector into the first internal fluid channel and the second internal fluid channel; and
the cleaning fluid is directed downstream from the second internal fluid channel into the airflow pathway, through the wand airflow connector.

9. The system of claim 1 , further comprising:
a valve provided in the fluid delivery pathway for controlling the flow of cleaning fluid to the wand fluid connector, the wand having a wand housing; and
a trigger installed on the wand housing, the trigger being selectively operable to control the valve and activate delivery of the cleaning fluid into the cap fluid pathway.

10. The system of claim 1 , wherein:
the cap housing includes a detent opening; and
the wand includes a detent engageable with the detent opening of the cap housing for securing the wand cap to the wand.

11. A system for cleaning a recovery path of an extraction cleaner, the extraction cleaner having a fluid delivery system comprising a supply container and a recovery system comprising a recovery container, the system comprising:
a wand fluidly coupled with the fluid delivery system and the recovery system, the wand comprising:
a fluid delivery pathway adapted for fluid communication with the supply container and having a wand fluid connector; and
an airflow pathway adapted for fluid communication with the recovery container and having a wand airflow connector;

a wand cap configured for attachment to the wand;
wherein the wand cap is defined by a cap housing having an end wall, and a peripheral side wall extending from the end wall to an open opposite end; and
wherein the cap housing forms a cap fluid pathway when the wand cap is attached to the wand at the open opposite end of the cap housing, the cap fluid pathway directing flow of a cleaning fluid between the wand fluid connector and the wand airflow connector.

12. The system of claim 11 , wherein the cap housing includes a cap fluid connector and a cap airflow connector, the cap fluid pathway being formed when the cap fluid connector is fluidly coupled with the wand fluid connector and the cap airflow connector is fluidly coupled with the wand airflow connector.

13. The system of claim 12 , wherein:
the cap housing includes a first internal fluid channel in fluid communication with the cap fluid connector, and a second internal fluid channel in fluid communication with the cap airflow connector; and
the cap housing includes a wall separating the first internal fluid channel and the second internal fluid channel, the wall having at least one passage opening for guiding the cleaning fluid from the wand fluid connector into the wand airflow connector when the wand cap is installed on the wand.

14. The system of claim 12 , wherein:
the cap housing includes a first internal fluid channel in fluid communication with the cap fluid connector, and a second internal fluid channel in fluid communication with the cap airflow connector;
the cleaning fluid is directed through the wand fluid connector into the first internal fluid channel and the second internal fluid channel; and
the cleaning fluid is directed downstream from the second internal fluid channel into the airflow pathway, through the wand airflow connector.

15. The system of claim 11 , wherein at least a portion of the cap housing is transparent.

16. The system of claim 11 , further comprising:
a valve provided in the fluid delivery pathway for controlling the flow of cleaning fluid to the wand fluid connector, the wand having a wand housing; and
a trigger installed on the wand housing, the trigger being selectively operable to control the valve and activate delivery of the cleaning fluid into the cap fluid pathway.

17. The system of claim 11 , wherein:
the cap housing includes a detent opening; and
the wand includes a detent engageable with the detent opening of the cap housing for securing the wand cap to the wand.

18. The system of claim 11 , wherein:
the wand airflow connector defines an inlet end of the wand; and
the end wall is spaced from the inlet end of the wand to permit working air to flow from the wand cap through the airflow pathway when the wand cap is installed on the wand.

19. The system of claim 11 , wherein the wand cap further includes at least one air vent formed in the cap housing, the at least one air vent being in fluid communication with the cap fluid pathway.

20. The system of claim 19 , wherein the at least one air vent is disposed in the peripheral side wall.

Assignees

• Bissell Inc

Inventors

• Royale Victoria J
• Griffith Aaron P
• Miller David M
• Luyckx Michael
• Wolfe Brian C
• Benacquisto Justin

Classifications

• A47L11/4016 Primary

  specially adapted for collecting fluids · CPC title

• A47L11/201

  with supply of cleaning agents · CPC title

• A47L11/30

  by suction · CPC title

• A47L11/302

  having rotary tools · CPC title

• A47L11/34

  Machines for treating carpets in position by liquid, foam, or vapour, e.g. by steam · CPC title