Floor scrubber

• US 7,770,254 B2
• Filed: 11/21/2005
• Issued: 08/10/2010
• Est. Priority Date: 11/21/2005
• Status: Active Grant

• Current Assignee: FNA Group, Inc.
• Original Assignee: FNA IP Holdings, Inc.
• Inventors: Alexander, Gus
• Primary Examiner(s): Thomas; David B
• Application Number:
  US11/283,661
• Publication Number:
  US 20070113368A1
• Time in Patent Office: 1,723 Days
• Field of Search: 153/21, 153/22, 15/501, 15/503, 15/24, 15/29, 153/85
• US Class Current: 15/321
• CPC Class Codes: A47L 11/03 characterised by having provisions for supplying cleaning or polishing agents A47L11/065, A47L11/085, A47L11/125, A47L11/145, A47L11/161, A47L11/1625, A47L11/185, A47L11/201 take precedence
• CPC Class Codes: A47L 11/4044 Vacuuming or pick-up tools; Squeegees
• CPC Class Codes: A47L 11/4088 Supply pumps; Spraying devices; Supply conduits
• CPC Class Codes: B08B 2203/0229 Suction chambers for aspirating the sprayed liquid
• CPC Class Codes: B08B 3/024 Cleaning by means of spray elements moving over the surface to be cleaned
• CPC Class Codes: B08B 3/026 Cleaning by making use of hand-held spray guns; Fluid preparations therefor

Abstract

A floor scrubber for cleaning floor surfaces that includes a cleaning head which defines a downwardly opening cleaning zone having a plurality of spray nozzles connected to a power washer pump for directing pressurized liquid flow streams onto the floor surface during a cleaning operation. The cleaning head further defines a separate downwardly opening vacuum zone connected to a wet/dry vacuum device operable for creating a vacuum pressure within the vacuum zone for removing liquid that has been directed onto the floor surface. The wet/dry vacuum device preferably further is operable for selectively directing a positive air flow into the vacuum zone to facilitate drying of the floor surface after cleaning and vacuum removal of the liquid.

Claims

1. A floor scrubber for cleaning floor surfaces comprising:

a cleaning head having a housing defining a downwardly opening cleaning zone,

at least one spray nozzle supported within said cleaning zone,

said cleaning head having a liquid inlet connectable to a pressurized liquid supply for directing cleaning fluid to said at least one nozzle,

said liquid inlet being defined by a pivotably mounted adaptor,

said adaptor defining a liquid flow passageway for communicating liquid from said liquid inlet to said at least one spray nozzle,

a pump having a control wand connectable to said adaptor for directing pressurized liquid to said liquid inlet and through said liquid passageway and said at least one spray nozzle,

said housing further defining a vacuum zone, and said vacuum zone having a vacuum pressure inlet connectable to a vacuum pressure source.

2. The floor scrubber of claim 1 in which said vacuum zone is disposed adjacent only a section of a perimeter of the cleaning zone.

3. The floor scrubber of claim 1 including a plurality of spray nozzles mounted on a spray nozzle assembly rotatably supported within said housing, and said spray nozzle assembly being rotatable in response to the flow of liquid through said nozzles.

4. A floor scrubber for cleaning floor surfaces comprising:

a cleaning head having a housing defining a downwardly opening cleaning zone,

an adjustable spray nozzle assembly supported within said housing including a plurality of spray nozzles for directing pressurized liquid flow streams, wherein said spray assembly may be vertically adjusted within said housing,

said housing having a liquid inlet for directing pressurized liquid from a pressurized liquid supply to said spray nozzle assembly,

said plurality of spray nozzles including at least one turbo nozzle having a turbulence creating internal agitation member for agitating the flow stream, and

at least two of said plurality of nozzles being fan spray nozzles for generating fan spray patterns.

5. The floor scrubber of claim 4 in which said housing defines a separate vacuum zone disposed adjacent only a section of a perimeter of the cleaning zone, and said housing having a vacuum inlet connectable to a vacuum pressure source for creating a vacuum pressure within said vacuum zone.

6. A floor scrubber for cleaning floor surfaces comprising:

a cleaning head having a housing defining a downwardly opening cleaning zone,

at least one spray nozzle supported within said cleaning zone,

said cleaning head having a liquid inlet connectable to a pressurized liquid supply,

said housing further defining a vacuum zone, said vacuum zone having a vacuum pressure inlet connectable to a vacuum pressure source,

said vacuum inlet being defined by an adaptor connected to said housing, and said adaptor having a tapered outer surface that narrows as it extends outwardly from said housing for accommodating engagement to different sized vacuum lines selectable for use in connecting a vacuum inlet to said vacuum pressure source.

7. The floor scrubber of claim 6 in which said vacuum inlet defining adaptor has a stepped outer surface defined by a plurality of cylindrical surfaces of progressively smaller diameters as it extends outwardly from said housing.

8. The floor scrubber of claim 6 in which said adaptor has a conical configuration.

9. The floor scrubber of claim 6 wherein the outer surface of the adaptor further includes a plurality of longitudinally spaced sealing rings.

10. A floor scrubber for cleaning floor surfaces comprising:

a cleaning head having a housing defining a downwardly opening cleaning zone,

at least one spray nozzle supported within said cleaning zone,

said cleaning head having a liquid inlet connectable to a pressurized liquid supply,

said housing further having a vacuum zone separate from said cleaning zone,

said vacuum zone having a vacuum pressure inlet connectable to a vacuum pressure source,

said vacuum zone being within the housing and being disposed adjacent only a section of a perimeter of the cleaning zone; and

a plurality of rolling elements disposed within a lower perimeter of said housing and supporting said lower perimeter in a predetermined spaced relation to the floor surface, at least two of said plurality of rolling elements being disposed outside of a forward longitudinal path of said vacuum zone.

11. The floor scrubber of claim 10 further including a plurality of roller balls disposed within an underside of said housing for supporting the cleaning head in predetermined closely spaced relation from the floor surface.

12. The floor scrubber of claim 10 wherein said liquid inlet being defined by an adaptor that is configured to receive a portion of a control wand that is connected to said pressurized liquid supply;

wherein said control wand and adaptor define a handle for use in moving the floor scrubber over a floor surface.

13. A floor scrubber cleaning head for cleaning floor surfaces comprising:

a housing defining a downwardly opening cleaning zone and a vacuum zone separate from said cleaning zone, wherein said vacuum zone is within the housing and is disposed adjacent only a portion of a perimeter of said cleaning zone;

at least one spray nozzle positioned within said cleaning zone,

a liquid inlet connectable to a pressurized liquid supply for directing fluid to said at least one nozzle;

a vacuum inlet connectable to a vacuum pressure source; and

a plurality of rolling elements disposed within a lower perimeter of said housing and supporting said lower perimeter in a predetermined spaced relation to the floor surface, at least two of said plurality of rolling elements being disposed outside of a forward longitudinal path of said vacuum zone.

14. The floor scrubber cleaning head of claim 13 wherein said vacuum inlet is further defined by an adaptor connected to said housing, and said adaptor having a tapered outer surface for engaging different sized vacuum lines used to connect said vacuum inlet to said vacuum pressure source.

15. The floor scrubber cleaning head of claim 13 further including a flexible barrier medium depending from said housing surrounding said cleaning and vacuum zones.

16. The floor scrubber of claim 15 in which said barrier medium includes brush bristles supported in depending relation about a perimeter of the housing.

17. The floor scrubber of claim 15 in which said barrier medium includes a squeegee blade fixed in depending relation about a perimeter of said housing.

18. A method of cleaning a floor surface comprising the steps of:

providing a floor scrubber, comprising;

a cleaning head having;

a housing defining a downwardly opening cleaning zone and a vacuum zone separate from said cleaning zone, wherein said vacuum zone is within the housing and is disposed adjacent only a portion of a perimeter of said cleaning zone;

at least one spray nozzle positioned within said cleaning zone,

a liquid inlet;

a vacuum inlet; and

a plurality of rolling elements disposed within a lower perimeter of said housing and supporting said lower perimeter in a predetermined spaced relation to the floor surface, at least two of said plurality of rolling elements being disposed outside of a forward longitudinal path of said vacuum zone;

connecting the liquid inlet to a pressure washer to supply pressurized liquid to said at least one spray nozzle;

connecting a vacuum source with a vacuum tank to said vacuum inlet;

spraying at least a portion of said pressurized liquid into the cleaning zone; and

vacuuming at least a portion of said pressurized liquid from said floor surface, through the vacuum zone of said cleaning head and into said vacuum tank.

19. The method of claim 18 wherein the vacuum source is a wet/dry vacuum device and comprising the further step of redirecting the wet/dry vacuum device to provide positive pressure air flow into said vacuum inlet and vacuum zone for facilitating drying of the floor surface.