Hard floor cleaner

• US 20060000050A1
• Filed: 07/01/2004
• Published: 01/05/2006
• Est. Priority Date: 07/01/2004
• Status: Active Grant

• Current Assignee: Royal Appliance Manufacturing Company (Techtronic Industries Company Limited)
• Original Assignee: Royal Appliance Manufacturing Company (Techtronic Industries Company Limited)
• Inventors: Farone, Richard C., Wright, Michael F., Cipolla, Mark E., Murphy, John S.
• Granted Patent: US 7,254,864 B2
• Time in Patent Office: Days
• US Class Current: 15/353
• 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 11/4041 Roll shaped surface treating tools
• CPC Class Codes: A47L 5/28 Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle A47L5/24 takes precedence
• 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 floor cleaning device (10) includes a housing (40) and a container (43) removably received by the housing. A suction nozzle (18, 18′, 18″) is fluidly connected with the container and with a suction source (52) when the container is received by the housing. A filter (114) is selectively fluidly connected with the container and with the suction source. A float (170) selectively closes the fluid connection of the filter with the container. The filter and the float may be removable as a unit (42) from the cleaning device. The nozzle may be removable, allowing an appropriate nozzle to be selected according to the type of floor surface to be cleaned.

Claims

1. A cleaning device comprising:

a housing;

a container removably received by the housing, the container defining an inlet tube and an outlet;

a suction source mounted on the housing and fluidly connected with the outlet of the container; and

an annular float which selectively closes the fluid flowpath, the float being located in the container and surrounding the inlet tube.

2. The cleaning device of claim 1, further comprising:

a suction nozzle fluidly communicating with the container and with the suction source via a fluid flowpath when the container is received by the housing.

3. The cleaning device of claim 2, wherein the suction nozzle is removably mounted to the housing.

4. The cleaning device of claim 2, further including a second suction nozzle interchangeable with the first suction nozzle.

5. The cleaning device of claim 1, wherein the float is vertically movable, relative to the suction tube.

6. The cleaning device of claim 2, further comprising:

a filter positioned in the flowpath between the container and the suction source.

7. The cleaning device of claim 6, further comprising:

a filter receptacle which carries the filter.

8. The cleaning device of claim 7, wherein the filter receptacle carries the float.

9. The cleaning device of claim 8, wherein the filter receptacle includes a plurality of tangs which engage the float.

10. The cleaning device of claim 9, wherein the float includes at least one aperture which receives a portion of the tangs therethrough, whereby the filter and float are removable as a unit from the container.

11. The cleaning device of claim 7, wherein the filter receptacle defines at least one aperture in fluid communication with the filter and with the container and wherein the float is configured for closing said at least one aperture when a level of recovered liquid in the container rises.

12. The cleaning device of claim.7 wherein the filter receptacle and the inlet define an annular passage therebetween which directs the recovered cleaning liquid in a direction away from the filter.

13. The cleaning device of claim 7, wherein the filter includes a plate which is moveable from a disengaged position to an engaged position in which the filter is locked to the filter receptacle.

14. The cleaning device of claim 13, wherein the filter includes a handle by which the filter, the filter receptacle, and the float are removable as a unit from the container when the plate is in the engaged position.

15. The cleaning device of claim 13, wherein the filter receptacle includes a plurality of tangs which are selectively received through apertures in the plate.

16. The cleaning device of claim 7, wherein the filter receptacle includes a seal for sealing an opening to the container.

17. The cleaning device of claim 7, wherein the filter receptacle includes a tube, the filter receptacle tube and the inlet tube defining an annular flowpath therebetween for directing recovered liquid away from the filter.

18. The cleaning device of claim 1 further comprising:

a cleaning liquid distributor; and

a source of cleaning liquid carried by the housing, the source of cleaning liquid being in fluid communication with the distributor.

19. The cleaning device of claim 1, further comprising a handle assembly, the housing being carried at least in part by the handle assembly.

20. A cleaning device comprising:

a housing;

a container removably received by the housing, the container defining an inlet and an outlet;

a suction source fluidly connected with the outlet of the container;

a suction nozzle fluidly communicating with the inlet of the container and with the suction source via a fluid flowpath when the container is received by the housing;

a float and filter assembly comprising;

a filter;

a filter receptacle which receives the filter;

a float which selectively closes the fluid flowpath, one of the float and the filter receptacle including an engagement member for engagement with the other of the float and the filter receptacle whereby the float is movable in a direction parallel to a longitudinal axis of the container between a first position and a second position.

21. The cleaning device of claim 20, wherein the engagement member includes a plurality of tangs on the filter receptacle which extend through apertures in the float.

22. A collection assembly for a surface cleaning device comprising:

a container which comprises a compartment for receiving recovered cleaning fluid, an inlet tube through which the recovered fluid and entrained air enter the compartment, and an outlet; and

a filter and float assembly carried by the container for filtering dirt from entrained air entering the container until a level of liquid in the container reaches a preselected level, the float surrounding the inlet tube.

23. The collection assembly of claim 22, wherein the filter and float assembly being removable as a unit from the container.

24. The collection assembly of claim 22, wherein the float is movable, relative to the filter.

25. The collection. assembly of claim 22, wherein the float and filter assembly includes a filter receptacle which carries a filter.

26. The collection assembly of claim 25, wherein the filter receptacle carries a float of the float and filter assembly.

27. The collection assembly of claim 26, wherein one of the filter receptacle and the float includes an engagement member which engages the other of the filter receptacle and the float whereby the float is suspended from the filter receptacle during removal of the float and filter from the container.

28. The collection assembly of claim 27, wherein the engagement member includes tangs on the filter receptacle and the float includes at least one aperture which receives a portion of each of the tangs therethrough.

29. The collection assembly of claim 25, wherein the filter receptacle defines at least one aperture in fluid communication with the filter and with the compartment and wherein the float is configured for closing said at least one aperture in response to recovered liquid in the compartment reaching the preselected level.

30. The collection assembly of claim 29, wherein the float includes a frustoconical portion which engages a frustoconical portion of the filter receptacle when the recovered liquid reaches the selected level and wherein the frustoconical portion of the filter receptacle defines the at least one aperture.

31. The collection assembly of claim 25, wherein the filter includes a plate which is moveable between a disengaged position, in which the filter is removable from the filter receptacle, and an engaged position, in which the filter is locked to the filter receptacle.

32. The collection assembly of claim 31, wherein the plate defines a handle by which the float and filter assembly can be removed as a unit from the container when the plate is in the engaged position.

33. The collection assembly of claim 31, wherein the filter receptacle includes a plurality of tangs which are selectively received through apertures in the plate.

34. The collection assembly of claim 25, wherein the filter receptacle includes a seal for sealing the outlet.

35. The collection assembly of claim 25, wherein the filter receptacle includes a tube, the filter receptacle tube and the inlet tube defining an annular flowpath therebetween for directing recovered liquid away from the filter.

36. A method for cleaning a floor comprising:

providing an upright cleaning device including a floor nozzle and an upper housing accomodating a container with a compartment for receiving recovered cleaning liquid, the container including an inlet tube, and a float and filter assembly carried by the container;

applying a cleaning liquid to the floor;

suctioning cleaning liquid from the floor into the compartment through the inlet tube;

closing a flowpath of entrained air between the compartment and the filter when a level of the dirty cleaning fluid causes the float to close, the float being guided between first and second positions in relation to the inlet tube.

37. The method of claim 36, further comprising:

removing the float and filter assembly as a unit from the container.

38. The method of claim 36, further comprising:

prior to the step of applying the cleaning fluid to the floor, inserting the float and filter assembly into the compartment such that a float is movable relative to a receptacle of a filter, as the level of liquid rises in the compartment.

39. The method of claim 38, further including:

suspending the float from the filter receptacle; and

releasably engaging the filter and the filter receptacle.

40. A cleaning device comprising:

a base;

a container carried by said base for receiving dirt from a surface to be cleaned;

a source of suction in fluid communication with the container;

a suction nozzle carried by said base, the suction nozzle including an inlet for receiving dirt from the surface to be cleaned and an outlet; and

,

an adjustment mechanism for moving the suction nozzle, relative to said base, between a first position, in which the inlet is located adjacent the surface to be cleaned and a second position, in which the inlet is spaced from the surface, wherein the suction nozzle outlet is in fluid communication with the container and with the source of suction in both the first and second positions of the suction nozzle.

41. The cleaning device of claim 40, further including at least one squeegee mounted to the suction nozzle adjacent the inlet, the squeegee contacting the surface to be cleaned when the suction nozzle is in the first position and being spaced from the surface when the suction nozzle is in the second position.

42. The cleaning device of claim 40, wherein the adjustment mechanism includes a pivoting link for pivotally connecting the suction nozzle to the base.

43. The cleaning device of claim 42, wherein the adjustment mechanism further comprises a pedal operatively connected to said pivoting link.

44. The cleaning device of claim 40, further comprising:

a handle assembly pivotally connected with the base;

wherein the container is carried by one of said base and said handle assembly; and

wherein the suction source is carried by one of said base and said handle assembly.

45. The cleaning device of claim 40, wherein the container defines an inlet tube and an outlet, the cleaning device further comprising:

an annular float which selectively closes a fluid flowpath between the container and the source of suction, the float surrounding the inlet tube.

46. The cleaning device of claim 40, further comprising a locking element for selectively securing the suction nozzle to the base.

47. The cleaning device of claim 46, wherein said locking element comprises a collar selectively rotatable in relation to a longitudinal axis of the suction nozzle.

48. The cleaning device of claim 40, wherein first and second suction nozzles can be selectively secured to the base, the first suction nozzle including a squeegee adapted for hard floor cleaning and the second suction nozzle including a lower wall adapted for carpet cleaning.

49. A cleaning device comprising:

a base;

a container carried by said base for receiving dirt from a surface to be cleaned;

a source of suction in fluid communication with the container; and

a plurality of interchangeable suction nozzles configured for selective connection with the base, each of the suction nozzles including an inlet for receiving dirt from the surface to be cleaned and an outlet for connection with the base.

50. The cleaning device of claim 49, wherein at least one of the suction nozzles, when connected to the base is movable, relative to said base, between a first position, in which the inlet is located adjacent the surface to be cleaned and a second position, in which the inlet is spaced from the surface.

51. The cleaning device of claim 50, wherein the suction nozzle outlet is in fluid communication with the container and with the source of suction in both the first and second positions of the suction nozzle.

52. The cleaning device of claim 49, wherein a first of the suction nozzles includes a squeegee, adjacent the inlet for assisting in pickup of liquids.