Multi-functional cleaning machine

• US 6,206,980 B1
• Filed: 07/01/1998
• Issued: 03/27/2001
• Est. Priority Date: 11/13/1997
• Status: Expired due to Term

• Current Assignee: Kaivac Inc.
• Original Assignee: Kaivac Inc.
• Inventors: Robinson, Robert S.
• Primary Examiner(s): Till, Terrence R.
• Application Number:
  US09/108,411
• Time in Patent Office: 1,000 Days
• Field of Search: 153/20, 153/21, 153/23, 153/26, 153/28, 134/21
• US Class Current: 134/21
• CPC Class Codes: A47L 11/30 by suction
• 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 11/4011 Regulation of the cleaning machine by electric means; Control systems and remote control systems therefor
• CPC Class Codes: A47L 11/4013 Contaminants collecting devices, i.e. hoppers, tanks or the like
• CPC Class Codes: A47L 11/4016 specially adapted for collecting fluids
• CPC Class Codes: A47L 11/4019 Fill level sensors; Security means to prevent overflow, e.g. float valves
• CPC Class Codes: A47L 11/4027 Filtering or separating contaminants or debris
• CPC Class Codes: A47L 11/4036 Parts or details of the surface treating tools
• CPC Class Codes: A47L 11/4083 Liquid supply reservoirs; Preparation of the agents, e.g. mixing devices
• CPC Class Codes: A47L 11/4088 Supply pumps; Spraying devices; Supply conduits
• 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: B08B 2203/0229 Suction chambers for aspirating the sprayed liquid
• CPC Class Codes: B08B 3/026 Cleaning by making use of hand-held spray guns; Fluid preparations therefor
• CPC Class Codes: B08B 9/0321 using pressurised, pulsating or purging fluid E04F17/126 takes precedence
• CPC Class Codes: E03C 1/304 using fluid under pressure

Abstract

A particular multi-functional cleaning machine, in accordance with the principles of the invention, includes a water-tank and a liquid delivery line extending from the water tank to a high-pressure spray gun. The liquid delivery line has an inner end, a pump, and an outer end, with the inner end connected to the water tank, and the outer end connected to the high-pressure spray gun. The machine also has a cleaning-liquid draw line which is connected to the liquid delivery line using a cleaning-liquid injector. Because the machine has a separate cleaning-liquid draw line, an operator is able to choose from among any of a number of different cleaning liquids stowed in containers on the machine, and to draw a particular liquid through the draw line, into the liquid delivery line, where it may be combined with water from the water tank and subsequently sprayed onto a surface to be cleaned. The machine also incorporates a vac tank, a vacuum connected to the vac tank, and a vac-hose assembly, thereby enabling a user to vacuum spent cleaning solution and soil into the vac tank. Other aspects of the invention include a grout cleaning tool, a plunger gun, a liquid transport device, and a method of cleaning a soiled surface.

Claims

1. A multi-functional cleaning machine, comprising:

a liquid tank;

a liquid delivery line having an inner end, a pump, and an outer end, the inner end connected to the liquid tank;

a cleaning-liquid line connected to the liquid delivery line;

an injector connecting the cleaning-liquid line and the liquid delivery line, the injector including a venturi tube;

a vac tank; and

a vacuum connected to the vac tank.

2. The machine of claim 1 wherein the cleaning-liquid line is connected to the liquid delivery line between the pump and the outer end.

3. The machine of claim 1 further including a liquid return line connecting the pump to the liquid tank.

4. The machine of claim 3 wherein the liquid return line includes an unloader.

5. The machine of claim 3 wherein the liquid return line is directly connected to the pump.

6. The machine of claim 1 wherein the cleaning-liquid line is releasably connectable to a cleaning liquid container.

7. The machine of claim 6 wherein the cleaning-liquid line includes a quick disconnect member and a corresponding quick disconnect member.

8. The machine of claim 1 wherein the cleaning-liquid line includes a chemical proportioning element.

9. The machine of claim 8 wherein the element is removable.

10. The machine of claim 1 further including a spray gun connectable to the liquid delivery line.

11. The machine of claim 10 wherein the spray gun has a low-pressure spray mode and a high-pressure spray mode.

12. The machine of claim 1 wherein the vac tank includes a stand pipe having an upper opening and a float closure capable of closing the upper opening.

13. The machine of claim 1 wherein the vac tank includes a reinforcing member.

14. The machine of claim 1 wherein the vacuum includes an exhaust outlet, the machine further including a muffler connectable to the exhaust outlet.

15. The machine of claim 1 further including a wet-vac floor tool having a squeegee and being connectable to the vac tank.

16. The machine of claim 1 wherein the vacuum includes an exhaust outlet, the machine further including a blow-dry assembly connectable to the exhaust outlet.

17. The machine of claim 1 wherein the vac tank includes a dirty-liquid outlet.

18. The machine of claim 17 further including a dump hose connected to the outlet.

19. The machine of claim 18 wherein the machine has a front wall including a cavity, the dump hose positioned substantially within the cavity when the dump hose is in a stowed position.

20. The machine of claim 17 wherein the vac tank has a bottom wall, with the bottom wall and the dirty-liquid outlet being sufficiently high enough above the ground that, when the vac tank contains dirty liquid, substantially all of the dirty liquid may be drained through the outlet into a toilet of standard height.

21. The machine of claim 1 wherein the vac tank includes an access port.

22. The machine of claim 21 further including a dry-vac canister mountable on the access port.

23. The machine of claim 22 further including a dry-vac tool assembly connectable to the dry-vac canister.

24. The machine of claim 1 wherein the liquid tank has a top wall, the top wall including a recessed well sized to receive a cleaning-liquid container.

25. The machine of claim 1 wherein the liquid tank has a top wall, the top wall including a fill port and a spillway extending from the fill port toward the back of the liquid tank.

26. The machine of claim 1 wherein the liquid tank has a front wall and the vac tank has a back wall oriented toward the liquid tank front wall, the liquid tank front wall and the vac tank rear wall each having a longitudinal recess, thereby creating a passageway outside the liquid tank and vac tank, the passageway containing the cleaning-liquid line and electrical wiring.

27. The machine of claim 1 further including a cleaning-tool stowing assembly, the stowing assembly comprising a strap having a first portion and a second portion, the first portion secured to the machine, the second portion releasably securable to the machine, thereby enabling a user to position a cleaning tool between a wall of the machine and the strap, and releasably secure the second portion to a wall of the machine.

28. The machine of claim 27 wherein the first portion is secured to a wall of the machine, and the second portion is releasably securable to an adjacent wall of the machine.

29. The machine of claim 28 wherein the wall and the adjacent wall have an interior angle, the interior angle being about 90 degrees or less.

30. The machine of claim 1 further including a wrap having an upper wrap projection and a corresponding lower wrap projection.

31. The machine of claim 30 wherein the wrap is constructed and arranged to accommodate a vacuum hose.

32. The machine of claim 1 further including a grout cleaning tool connectable to the liquid tank and the vac tank, the grout cleaning tool comprising:

a housing having a liquid delivery opening and a soil uptake opening; and

a flexible lip connected to the housing.

33. The machine of claim 1 further including a carpet extractor tool connectable to the liquid tank and the vac tank.

34. The machine of claim 1 further including a plunger gun connectable to the liquid tank, the plunger gun comprising:

a spray gun and a plunger bulb connected to the spray gun, the plunger bulb releasably sealable about a conduit opening of a conduit, thereby enabling water under an elevated pressure to be controllably delivered into the conduit.

35. The machine of claim 1 further including a liquid transport device, comprising:

a liquid conduit having a first end with a liquid-receiving opening and a second end with a liquid-dispensing opening, the liquid conduit further having a conduit-reinforcing member; and

a faucet fastener connected to the liquid conduit.

36. A method of cleaning a soiled surface, comprising the steps of:

providing a multi-functional cleaning machine, comprising;

a liquid tank containing a liquid;

a liquid delivery line having an inner end, a pump, and an outer end, the inner end connected to the liquid tank;

a spray gun connectable to the outer end and having a liquid passageway and a liquid outlet;

a cleaning-liquid supply containing a cleaning liquid;

a cleaning-liquid line connectable to the cleaning liquid supply and to the liquid delivery line;

an injector connecting the cleaning-liquid line and the liquid delivery line;

a vac tank;

a vacuum connected to the vac tank; and

a vacuuming assembly constructed and arranged to bring a material into the vac tank;

aiming the liquid outlet of the spray gun at the soiled surface;

spraying at least a portion of the liquid and cleaning liquid onto the soiled surface at a first pressure, the cleaning liquid being drawn from the cleaning-liquid supply, through the cleaning-liquid line, through the injector, and through the liquid delivery line and spray gun;

spraying at least a portion of the liquid onto the soiled surface at a second pressure, the second pressure inhibiting the flow of the cleaning liquid through the injector; and

vacuuming liquid, cleaning liquid, and soil from the soiled surface, through the vacuuming assembly and into the vac tank.

37. A multi-functional cleaning machine, comprising:

a liquid tank;

a liquid delivery line having an inner end, a pump, and an outer end, the inner end connected to the liquid tank;

a spray gun connectable to the liquid delivery line;

a vac tank; and

a vacuum connected to the vac tank;

wherein the liquid tank and the vac tank exist simultaneously as elements of the multi-functional cleaning machine.

38. The machine of claim 37 wherein the spray gun has an adjustable spray pattern.

39. The machine of claim 38 wherein the adjustable spray pattern includes fan and pinpoint.

40. The machine of claim 39 wherein the spray gun has a low-pressure setting and a high-pressure setting.

41. The machine of claim 37 wherein the spray gun has a low-pressure setting and a high-pressure setting.

42. The machine of claim 37 wherein the spray gun is a liquid-driven spray gun.

43. The machine of claim 37 further including a wrap having an upper wrap projection and a corresponding lower wrap projection.

44. The machine of claim 43 wherein the wrap is constructed and arranged to accommodate a vacuum hose.

45. The machine of claim 37 wherein the vac tank includes a dirty-liquid outlet.

46. The machine of claim 45 further including a dump hose connected to dirty-liquid outlet.

47. The machine of claim 46 wherein the machine has a front wall including a cavity, the dump hose positioned substantially within the cavity when the dump hose is a stowed position.

48. The machine of claim 45 wherein the vac tank has a bottom wall, with the bottom wall and the dirty-liquid outlet being constructed and arranged such that, when the vac tank contains a dirty liquid, substantially all of the dirty liquid may be drained through the outlet into a toilet of standard height.

49. The machine of claim 37 wherein the vacuum includes an exhaust outlet, the machine further including a blow-dry assembly connectable to the exhaust outlet.

50. The machine of claim 37 further including a cleaning-tool stowing assembly, the stowing assembly comprising a strap having a first portion and a second portion, the first portion secured to the machine, the second portion releasably securable to the machine, thereby enabling a user to position a cleaning tool between a wall of the machine and the strap, and releasably secure the second portion to a wall of the machine.

51. The machine of claim 50 wherein the first portion is secured to a wall of the machine, and the second portion is releasably securable to an adjacent wall of the machine.

52. The machine of claim 51 wherein the wall and the adjacent wall have an interior angle, the interior angle being about 90 degrees or less.

53. The machine of claim 37 further including a wet-vac floor tool having a squeegee and being connectable to the vac tank.

54. The machine of claim 37 further including a grout cleaning tool connectable to the liquid tank and the vac tank, the grout cleaning tool comprising:

a housing having a liquid delivery opening and a soil uptake opening; and

a flexible lip connected to the housing.

55. The machine of claim 37 further including a carpet extractor tool connectable to the liquid tank and the vac tank.

56. The machine of claim 37 further including a plunger gun connectable to the liquid tank, the plunger gun comprising:

a spray gun; and

a plunger bulb connected to the spray gun, the plunger bulb releasably sealable about a conduit opening of a conduit, thereby enabling water under an elevated pressure to be controllably delivered into the conduit.

57. The machine of claim 37 further including a liquid transport device, comprising:

a liquid conduit having a first end with a liquid-receiving opening and a second end with a liquid-dispensing opening, the liquid conduit further having a conduit-reinforcing member; and

a faucet fastener connected to the liquid conduit.

58. A multi-functional cleaning machine, comprising:

a liquid tank;

a liquid delivery line having an inner end, a pump, and an outer end, the inner end connected to the liquid tank;

a vac tank;

a wet-vac floor tool having a squeegee and being connectable to the vac tank;

vacuum connected to the vac tank; and

a wrap having a projection.

59. The machine of claim 58 wherein the projection is an upper wrap projection, the wrap further including a corresponding lower wrap projection.

60. The machine of claim 59 wherein the wrap is constructed and arranged to accommodate a vacuum hose.

61. The machine of claim 58 wherein the vac tank includes a dirty-liquid outlet.

62. The machine of claim 61 further including a dump hose connected to the dirty-liquid outlet.

63. The machine of claim 62 wherein the machine has a front wall including cavity, the dump hose positioned substantially within the cavity when the dump hose is in a stowed position.

64. The machine of claim 61 wherein the vac tank has a bottom wall, with the bottom wall and the dirty-liquid outlet being sufficiently high enough above the ground that, when the vac tank contains a dirty liquid, substantially all of the dirty liquid may be drained through the outlet into a toilet of standard height.

65. The machine of claim 58 wherein the vacuum includes an exhaust outlet, the machine further including a blow-dry assembly connectable to the exhaust outlet.

66. The machine of claim 58 further including a cleaning-tool stowing assembly, the stowing assembly comprising a strap having a first portion and a second portion, the first portion secured to the machine, the second portion releasably securable to the machine, thereby enabling a user to position a cleaning tool between a wall of the machine and the strap, and releasably secure the second portion to a wall of the machine.

67. The machine of claim 66 wherein the first portion is secured to a wall of the machine, and the second portion is releasably securable to an adjacent wall of the machine.

68. The machine of claim 67 wherein the wall and the adjacent wall have an interior angle, the interior angle being about 90 degrees or less.

69. The machine of claim 58 further including a grout cleaning tool connectable to the liquid tank and the vac tank, the grout cleaning tool comprising:

a housing having a liquid delivery opening and a soil uptake opening; and

a flexible lip connected to the housing.

70. The machine of claim 58 further including a carpet extractor tool connectable to the liquid tank and the vac tank.

71. The machine of claim 58 further including a plunger gun connectable to the liquid tank, the plunger gun comprising:

a spray gun; and

a plunger bulb connected to the spray gun, the plunger bulb releasably sealable about a conduit opening of a conduit, thereby enabling water under an elevated pressure to be controllably delivered into the conduit.

72. The machine of claim 58 further including a liquid transport device, comprising:

a liquid conduit having a first end with a liquid-receiving opening and a second end with a liquid-dispensing opening, the liquid conduit further having a conduit-reinforcing member; and

a faucet fastener connected to the liquid conduit.

73. A method of cleaning a soiled surface using a multi-functional cleaning machine:

the machine including;

a liquid tank containing a liquid;

a liquid delivery line having an inner end, a pump, and an outer end, the inner end connected to the liquid tank;

a spray gun connectable to the liquid delivery line;

a vac tank; and

a vacuum connected to the vac tank;

wherein the liquid tank and the vac tank exist simultaneously as elements of the multi-functional cleaning machine;

the method comprising the step of delivering at least a portion of the liquid onto the soiled surface.

74. The method of claim 73 further comprising the step of vacuuming into the vac tank at least some of the portion of the liquid delivered during the delivering step.

75. The method of claim 73 wherein the machine further includes a wet-vac floor tool having a squeegee and being connectable to the vac tank.

76. The method of claim 75 further comprising the step of vacuuming into the vac tank at least some of the portion of the liquid delivered during the delivering step.

77. The method of claim 76 wherein the vacuuming step includes contacting the wet-vac floor tool with a surface having at least a part of the portion of the liquid delivered during the delivering step disposed thereon.

78. A method of cleaning a soiled surface using a multi-functional cleaning machine:

the machine including;

a liquid tank containing a liquid;

a liquid delivery line having an inner end, a pump, and an outer end, the inner end connected to the liquid tank;

a cleaning-liquid supply containing a cleaning liquid;

a cleaning-liquid line connectable to the cleaning liquid supply and to the liquid delivery line;

an injector connecting the cleaning-liquid line and the liquid delivery line, the injector including a venturi tube;

a vac tank;

a vacuum connected to the vac tank; and

a vacuuming assembly constructed and arranged to bring a material into the vac tank;

the method comprising the step of delivering at least a portion of the liquid to the soiled surface.

79. The method of claim 78 wherein the delivering step includes delivering at least a portion of the cleaning liquid to the soiled surface.