Upright carpet extractor

• US 5,500,977 A
• Filed: 01/14/1994
• Issued: 03/26/1996
• Est. Priority Date: 01/14/1994
• Status: Expired due to Term

• Current Assignee: Healthy Gain Investments Limited
• Original Assignee: Hoover Company (Whirlpool Corporation)
• Inventors: Morgan, Jeffery A., McAllise, Gregg A.
• Primary Examiner(s): MOORE, CHRISTOPHER K
• Application Number:
  US08/182,760
• Time in Patent Office: 802 Days
• Field of Search: 15/320, 15/321, 15/353
• US Class Current: 15/320
• CPC Class Codes: A47L 11/20 combined with vacuum cleaning devices
• 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 11/4061 Steering means; Means for avoiding obstacles; Details related to the place where the driver is accommodated
• CPC Class Codes: A47L 11/4091 Storing or parking devices, arrangements therefor; Means allowing transport of the machine when it is not being used
• 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

Abstract

A novel upright, hot water carpet cleaning extractor is disclosed. The overall configuration and operation of the extractor is similar to that of a typical upright vacuum cleaner and may be similarly operated in both the forward and reverse direction. The herein taught extractor comprises a base frame including the floor suction nozzle, suction fan, cleaning solution distributor, and a removable combination air/liquid separator and recovery tank. A manipulative push-pull handle is pivotly attached to the base frame having a removable cleaning solution supply tank supported thereon. The herein taught upright extractor is easily stored, self contained, easy to operate and requiring minimal effort by the operator.

Claims

1. A carpet extractor comprising:

a) a base frame, said base frame including vacuum producing means, cleaning solution distribution means for applying cleaning solution upon the surface being cleaned, and vacuum nozzle means for removing at least a portion of said cleaning solution from the surface being cleaned;

b) a cleaning solution recovery tank removably supported upon said base frame, said recovery tank fluidly communicating with said vacuum nozzle means and said vacuum producing means whereby working air is caused to enter said vacuum nozzle, pass through said recovery tank and to the vacuum producing means said recovery tank surrounding at least a portion of said vacuum producing means;

c) fluid separation means, associated with said recovery tank whereby liquid carried by said working air is separated from said working air and collected in said recovery tank;

d) upright handle means pivotally connected to said base frame whereby the base frame may be manually manipulated in a forward and reverse direction, said handle means including a cleaning solution supply tank removably supported thereupon; and

e) cleaning solution supply means whereby cleaning solution is conveyed from said supply tank to said cleaning solution distribution means.

3. The carpet extractor as claimed in claim 1 wherein said cleaning solution supply means includes valve means for selectively interrupting the flow of cleaning solution from said supply tank to said distribution means.

4. The carpet extractor as claimed in claim 3 wherein said handle means includes a finger operated trigger means for remotely operating said valve means.

5. The carpet extractor as claimed in claim 1 wherein said base frame includes a forward and rearward portion, and said vacuum nozzle includes an elongated inlet extending over the full width of said forward portion.

6. The carpet extractor as claimed in claim 5 including a base frame support wheel laterally positioned each side of the rear portion of said base frame.

7. The carpet extractor as claimed in claim 6 wherein the pivotal axis of said handle means is located rearwardly of said wheel axis.

8. The carpet extractor as claimed in claim 7 wherein said handle pivotal axis is positioned above said wheel axis.

13. The extractor as claimed in claim 5 including a hood affixed to the forward portion of said base frame, said hood includes integral therewith said vacuum nozzle means.

31. The extractor as claimed in claim 1 wherein said handle has an operating position and a storage position such that movement of the handle to said storage position moves said solution and recovery tanks into at least a partially overlying position.

2. A carpet extractor comprising:

a) a base frame, said base frame including vacuum producing means, cleaning solution distribution means for applying cleaning solution upon the surface being cleaned, and vacuum nozzle means for removing at least a portion of said cleaning solution from the surface being cleaned;

b) a cleaning solution recovery tank removably supported upon said base frame, said recovery tank fluidly communicating with said vacuum nozzle means and said vacuum producing means whereby working air is caused to enter said vacuum nozzle, pass through said recovery tank and to the vacuum producing means;

c) fluid separating means, associated with said recovery tank whereby liquid carried by said working air is separated from said working air and collected in said recovery tank;

d) upright handle means pivotally connected to said base frame whereby the base frame may be manually manipulated in a forward and reverse direction, said handle means including a cleaning solution supply tank removably supported thereupon;

e) releasable latching means for locking said handle means in an upright position; and

f) cleaning solution supply means whereby cleaning solution is conveyed from said supply tank to said cleaning solution distribution means.

9. A carpet extractor comprising:

a) a base frame, said frame having front and rear portions,

b) means for supporting said base frame upon the floor,

c) a suction fan affixed to said base frame,

d) suction nozzle means positioned toward the forward portion of said base frame, for vacuuming liquid from the surface being cleaned,

e) removable recovery tank means for separating liquid from the working air and collecting said liquid therein, said recovery tank means including a generally concave tank bottom, said tank bottom surrounding at least a portion of the motor of said suction fan,

f) fluid passage means fluidly connecting said suction nozzle means, said recovery tank means and said suction fan whereby working air will flow into said suction nozzle means, through said recovery tank means and to said suction fan inlet,

g) handle means pivotally attached to said base frame for manipulating said extractor forward and rearward, said handle means including a cleaning solution supply tank removably attached thereto, and

h) cleaning solution distribution means fluidly communicating with said supply tank whereby cleaning solution may be applied to the surface being cleaned.

10. The carpet extractor as claimed in claim 9 including an exhaust air discharge passageway from said suction fan directing said suction fan exhaust air toward the surface being cleaned.

11. The extractor as claimed in claim 10 wherein said exhaust passageway includes an air discharge nozzle having an elongate discharge slot whereby said discharged working air is directed towards the surface being cleaned.

12. The carpet extractor as claimed in claim 10 wherein said cleaning solution distribution means includes means for injecting cleaning solution into the flow of air passing through said exhaust air passageway.

14. A carpet extractor comprising:

a) a base frame, said base frame having forward and rearward portions, a pair of support wheels rotatingly attached to the rear portion of said base frame, said base frame including molded integral therewith an open top stepped basin comprising upper and lower portions the diameter of said upper portion being larger than the diameter of said lower portion forming a ledge therebetween;

b) a motor fan assembly positioned within said stepped basin, means associated with said motor fan assembly for separating said upper and lower portions of said stepped basin into a fan exhaust plenum and a fan inlet plenum respectively, the motor of said motor fan assembly extending above said exhaust plenum;

c) a concave motor cover affixed to said base frame and enclosing said motor therein, said motor cover having a forwardly extending exhaust nozzle top cover which cooperatingly joins with an exhaust nozzle bottom plate, integrally molded into said base frame, thereby forming an exhaust nozzle directed downwardly toward the surface being cleaned;

d) first conduit means fluidly connecting said exhaust nozzle and said exhaust plenum;

e) a hood overlying and affixed to the forward portion of said base frame, said hood having a depressed area in the top surface thereof configured to cooperate with a top cover thereby forming a suction nozzle having a nozzle inlet adjacent the surface being cleaned;

f) a removable open top recovery tank having a removable lid, the bottom of said recovery tank configured to sit atop said motor cover;

g) second conduit means for providing fluid communication between said suction nozzle and said recovery tank;

h) third conduit means for providing fluid communication between said recovery tank and said fan inlet plenum;

i) cleaning solution distribution means positioned within said exhaust nozzle whereby cleaning solution is dispensed into the exhaust air passing through and discharged from said exhaust nozzle; and

j) a manipulating handle pivotally attached to the rearward portion of said base frame;

k) a cleaning solution supply tank removably attached to said manipulating handle;

l) means for conveying cleaning solution from said cleaning solution supply tank to said cleaning solution distribution means; and

m) means for selectively interrupting the flow of cleaning solution from said supply tank to said distribution means.

15. A carpet extractor comprising:

a) a base frame, said frame having front and rear portions;

b) means for supporting said base frame upon the floor;

c) a vacuum source;

d) suction nozzle means positioned toward the forward portion of said base frame, for vacuuming an air-liquid mixture from the surface being cleaned;

e) removable recovery tank means supported upon said base frame, for separating liquid from said liquid-air mixture and collecting said liquid therein;

f) passage means fluidly connecting said suction nozzle means, said recovery tank means and said vacuum source whereby working air will flow into said suction nozzle means, through said recovery tank means and to said vacuum source;

g) handle means pivotally attached to the rear portion of said base frame for manipulating said extractor forward and rearward, said handle means including a cleaning solution supply tank removably attached thereto; and

h) cleaning solution distribution means fluidly communicating with said supply tank whereby cleaning solution may be drawn from said supply tank and applied to the surface being cleaned.

16. The carpet extractor as claimed in claim 15 wherein said vacuum nozzle includes an elongated inlet extending over the full width of the base frame.

17. The carpet extractor as claimed in claim 15 including a base frame support wheel laterally positioned each side of the rear portion of said base frame.

18. The carpet extractor as claimed in claim 15 wherein said cleaning solution supply means includes valve means for selectively interrupting the flow of cleaning solution from said supply tank to said distribution means.

19. The carpet extractor as claimed in claim 18 wherein said handle means includes a finger operated trigger means for remotely operating said valve means.

20. A carpet extractor comprising:

a) a base frame, said base frame including vacuum producing means, cleaning solution distribution means for applying cleaning solution upon the surface being cleaned, and vacuum nozzle means for removing at least a portion of said cleaning solution from the surface being cleaned;

b) a cleaning solution recovery tank supported upon said base frame, said recovery tank fluidly communicating with said vacuum nozzle means and said vacuum producing means whereby working air is caused to enter said vacuum nozzle, pass through said recovery tank and to the vacuum producing means, said recovery tank surrounding at least a portion of said vacuum producing means;

c) fluid separating means whereby liquid carried by said working air is separated from said working air and collected in said recovery tank;

d) upright handle means pivotally connected to said base frame whereby the base frame may be manually manipulated in a forward and reverse direction;

e) cleaning solution supply means including a supply tank whereby cleaning solution is conveyed from said supply tank to said cleaning solution distribution means.

21. A carpet extractor comprising:

a) a base frame, said base frame having a front and a rear portion;

b) means for supporting said base frame upon the floor;

c) a suction fan;

d) suction nozzle means positioned toward the forward portion of said base frame, for vacuuming liquid from the surface being cleaned;

e) recovery tank means for separating liquids from the working air and collecting said liquid therein, said recovery tank means surrounding at least a portion of the motor of said suction fan;

f) fluid passage means fluidly connecting said suction nozzle means, said recovery tank means and said suction fan whereby working air will flow into said suction nozzle means, through said recovery tank means and to said suction fan inlet;

g) handle means pivotally attached to said base frame for manipulating said extractor forward and rearward, said handle means including a cleaning solution supply tank attached thereto.

h) cleaning solution distribution means fluidly communicating with said supply tank whereby cleaning solution may be applied to the surface being cleaned.

22. A carpet extractor comprising:

a) a solution tank for storing cleaning liquid;

b) a recovery tank for storing liquid recovered from the surface being cleaned;

c) a nozzle base module having a suction inlet opening and providing support for one of said recovery tanks or solution tanks;

d) motor fan means for generating an air flow to convey dirt and liquid from the suction inlet opening to said recovery tank; and

e) a handle pivotally mounted to said base module, said handle having an operating position and a storage position and having the other of said recovery or solution tanks mounted and positioned thereon such that movement of the handle to said storage position moves said solution and recovery tanks into at least a partially overlying position.

23. The extractor as claimed in claim 22 wherein said solution tank is mounted on said handle.

24. The extractor as claimed in claim 23 wherein said recovery tank is removably positioned on said base module.

25. The extractor as claimed in claim 24 wherein said base module has a forward portion and a rearward portion, and said suction inlet positioned at the forward edge of said forward portion and said recovery tank is positioned upon said rear portion of said base module.

26. The extractor as claimed in claim 22 wherein said handle includes a latch to lock said handle in the storage position.

27. The extractor as claimed in claim 22 wherein said motor fan means is mounted on said base module.

28. The extractor as claimed in claim 27 wherein said recovery tank is positioned at least partially above said motor fan means on said base module.

29. The extractor as claimed in claim 22 wherein said motor fan means, said recovery tank, and said solution tank are positioned one above the other when said handle is in said storage position.

30. The extractor as claimed in claim 29 wherein said recovery tank is positioned between said motor fan means and said solution tank.