Hand-held deep cleaner

• US 7,225,503 B1
• Filed: 11/26/2003
• Issued: 06/05/2007
• Est. Priority Date: 11/27/2002
• Status: Active Grant

• Current Assignee: Bissell Inc.
• Original Assignee: Bissell Homecare, Inc. (Bissell Inc.)
• Inventors: Krebs, Alan J., Lenkiewicz, Kenneth M.
• Primary Examiner(s): Snider; Theresa T.
• Application Number:
  US10/707,212
• Time in Patent Office: 1,287 Days
• Field of Search: 153/20, 153/44, 153/52, 153/53, 153/83, 153/84, 153/90, 153/21
• 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 11/4008 Arrangements of switches, indicators or the like
• CPC Class Codes: A47L 11/4019 Fill level sensors; Security means to prevent overflow, e.g. float valves
• CPC Class Codes: A47L 11/4075 Handles; levers
• CPC Class Codes: A47L 11/4088 Supply pumps; Spraying devices; Supply conduits
• CPC Class Codes: A47L 5/24 Hand-supported suction cleaners
• 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 9/04 with driven brushes or agitators
• CPC Class Codes: A47L 9/22 Mountings for motor fan assemblies
• CPC Class Codes: A47L 9/322 for hand-supported suction cleaners

Abstract

A liquid extraction cleaner includes a solution dispensing system, a liquid recovery system, and an agitation brush assembly. The solution dispensing system includes a supply tank removably affixed to a housing and fluidly connected to a fluid distributor through a trigger-operated manual spray pump. The liquid recovery system includes a recovery tank removably mounted to the housing adjacent to the supply tank. An air liquid separator is provided within the recovery tank. Another assembly within the housing provides a vacuum source, where working air comes from the recovery tank to an inlet between a motor and an impeller. The agitation brush assembly is removably mounted in a lower forward portion of the housing.

Claims

1. In a liquid extraction cleaner comprising:

a housing having front and rear portions;

a dirty fluid extraction system mounted to the housing including;

a suction nozzle;

an air-liquid separator for separating air from liquid and debris;

a recovery tank in fluid communication with the suction nozzle for collecting recovered liquid and debris; and

a vacuum source in fluid communication with the suction nozzle and the recovery tank for drawing liquid and debris through the suction nozzle and for depositing them into the recovery tank;

a cleaning fluid dispensing system mounted to the housing including;

a cleaning fluid supply tank;

a fluid distributor connected to the cleaning fluid supply tank for distributing cleaning fluid onto the surface to be cleaned; and

a pocket formed in the rear portion thereof, wherein the recovery tank is removably received at least partially within the pocket;

the improvement comprising;

the housing has an integral handle between the front and rear portions thereof for carrying and operating the cleaner.

2. The liquid extraction cleaner according to claim 1 wherein the cleaning fluid supply tank and the recovery tank have interengaging releasable fasteners to removably mount the cleaning fluid supply tank to the recovery tank.

3. The liquid extraction cleaner according to claim 1 wherein the recovery tank further comprises an inlet duct and an outlet duct.

4. The liquid extraction cleaner according to claim 1 wherein the recovery tank further comprises a sealable opening that is closed with a cap to seal the opening, the cap having an outward-protrusion to facilitate removal of the cap from the opening and the cap protrusion matingly aligns with a recess in the housing when the recovery tank is properly seated within the pocket.

5. The liquid extraction cleaner according to claim 1 wherein the recovery tank further comprises at least one flange and the cleaning solution supply tank has a channel that slidably receives the flange for removably mounting the cleaning solution supply tank to the recovery tank.

6. The liquid extraction cleaner according to claim 5 wherein the at least one flange is on a top portion of the recovery tank and the cleaning solution supply tank channel is on a lower portion of the cleaning solution supply tank for removably mounting the cleaning solution tank to the recovery tank.

7. The liquid extraction cleaner according to claim 1 wherein the cleaning solution supply tank and the housing have interengaging releasable fasteners that removably mount the cleaning solution supply tank to the housing.

8. The liquid extraction cleaner according to claim 1 wherein the vacuum source further comprises a fan chamber defined in part by the housing.

9. The liquid extraction cleaner according to claim 8 wherein the vacuum source comprises an impeller to create working air flow and a motor for driving the impeller;

the impeller has an inlet opening between the motor and the impeller, and working air from the vacuum source is delivered to the impeller inlet between the motor and the impeller.

10. In a liquid extraction cleaner comprising:

a housing having front and rear portions;

a dirty fluid extraction system mounted to the housing including;

a suction nozzle;

an air-liquid separator for separating air from liquid and debris;

a recovery tank in fluid communication with the suction nozzle for collecting recovered liquid and debris; and

a vacuum source in fluid communication with the suction nozzle and the recovery tank for drawing liquid and debris through the suction nozzle and for depositing them into the recovery tank;

a cleaning fluid dispensing system mounted to the housing including;

a cleaning fluid supply tank; and

a fluid distributor connected to the cleaning fluid supply tank for distributing cleaning fluid onto the surface to be cleaned; and

the housing has a rearwardly extending pocket at the rear portion thereof, wherein the recovery tank is removably received at least partially within the pocket;

the improvement comprising;

a cartridge that is removably mounted to the front portion of the housing, the removable cartridge further comprises at least one rotatable agitation brush that is driven by a drive motor and wherein the rotation direction of the at least one brush is determined by the orientation of the cartridge in the housing.

11. The liquid extraction cleaner according to claim 10 and wherein the cartridge comprises at least two rotatable agitation brushes.

12. The liquid extraction cleaner according to claim 11 wherein the at least two-rotatable agitation brushes are configured to rotate in the same direction.

13. The liquid extraction cleaner according to claim 11 wherein the at least two rotatable agitation brushes are configured to rotate in different directions.

14. The liquid extraction cleaner according to claim 10 wherein the orientation of the cartridge to the housing determines the rotational speed of the at least one brush.

15. The liquid extraction cleaner according to claim 10 and further comprising a clutch mechanism between the brush and the drive motor to disconnect the drive motor from the brush when the brush resistance exceeds a predetermined torque.

16. The liquid extraction cleaner according to claim 15 wherein the clutch mechanism comprises a plurality of resilient fingers connected to one of the drive motor and the brush and that extend generally radially and a ring mounted to the other of the drive motor and the brush and with a plurality of indentations that receive the resilient fingers.

17. In a liquid extraction cleaner comprising:

a housing having front and rear portions;

a dirty fluid extraction system including;

a suction nozzle;

an air-liquid separator for separating air from liquid and debris;

a recovery tank in fluid communication with the suction nozzle for collecting recovered liquid and debris; and

a vacuum source in fluid communication with the suction nozzle and the recovery tank for drawing liquid and debris through the suction nozzle and for depositing them into the recovery tank; and

a cleaning fluid dispensing system including;

a cleaning fluid supply tank; and

a fluid distributor connected to the cleaning fluid supply tank for distributing cleaning fluid onto the surface to be cleaned;

wherein the recovery tank further comprises at least one flange and the cleaning solution supply tank has a channel that slidably receives the flange to removably mount the cleaning solution supply tank to the recovery tank.

18. The liquid extraction cleaner according to claim 17 wherein the at least one flange is on a top portion of the recovery tank and the cleaning solution supply tank channel is on a lower portion of the cleaning solution supply tank to removably mount the cleaning solution supply tank to the recovery tank.

19. The liquid extraction cleaner according to claim 17 wherein the cleaning solution supply tank and the housing have interengaging releasable fasteners that removably mount the cleaning solution supply tank to the housing.

20. The liquid extraction cleaner according to claim 17 wherein the recovery tank can be removed from the housing with or without the cleaning solution supply tank attached thereto.

21. The liquid extraction cleaner according to claim 17 wherein the cleaning solution supply tank can be removed from the recovery tank with the recovery tank mounted to the housing.

22. In a liquid extraction cleaner comprising:

a housing having front and rear portions;

a dirty fluid extraction system including;

a suction nozzle;

an air-liquid separator for separating air from liquid and debris;

a recovery tank in fluid communication with the suction nozzle for collecting recovered liquid and debris; and

a vacuum source for drawing liquid and debris through the suction nozzle and for depositing them into the recovery tank;

a cleaning fluid dispensing system including;

a cleaning fluid supply tank; and

a fluid distributor connected to the cleaning fluid supply tank for distributing cleaning fluid onto the surface to be cleaned;

the improvement comprising;

the vacuum source comprises an impeller to create a working air flow and a motor for driving the impeller;

the impeller has an inlet opening between the motor and the impeller, and wherein working air from the vacuum source is delivered to the impeller from the inlet opening between the motor and the impeller.

23. The liquid extraction cleaner according to claim 22 wherein the impeller has an outlet opening that is positioned distal to the motor.

24. The liquid extraction cleaner according to claim 23 and further comprising a fan chamber that is formed in part by the housing.

25. The liquid extraction cleaner according to claim 24 and further comprising an exhaust conduit having a vent opening formed in part by the housing.