Extraction cleaning with tank mounting

• US 7,475,712 B2
• Filed: 10/31/2007
• Issued: 01/13/2009
• Est. Priority Date: 08/13/1997
• Status: Expired due to Term

• Current Assignee: Bissell Homecare, Inc. (Bissell Inc.)
• Original Assignee: Bissell Homecare, Inc. (Bissell Inc.)
• Inventors: McDowell, David E.
• Primary Examiner(s): Wilson; Lee D
• Application Number:
  US11/931,523
• Publication Number:
  US 20080072395A1
• Time in Patent Office: 440 Days
• Field of Search: 153/20, 153/34, 153/53, 153/52, 153/21, 153/22, 153/55
• US Class Current: 15/320
• CPC Class Codes: A46B 9/026 where the surface of the brush body or carrier is not in one plane, e.g. not flat A46B9/005 takes precedence
• 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 11/4016 specially adapted for collecting fluids
• CPC Class Codes: A47L 11/4041 Roll shaped surface treating tools
• CPC Class Codes: A47L 11/4044 Vacuuming or pick-up tools; Squeegees
• CPC Class Codes: A47L 11/4075 Handles; levers
• CPC Class Codes: A47L 11/4083 Liquid supply reservoirs; Preparation of the agents, e.g. mixing devices
• CPC Class Codes: A47L 11/4086 Arrangements for steam generation
• CPC Class Codes: A47L 11/4088 Supply pumps; Spraying devices; Supply conduits
• CPC Class Codes: A47L 5/30 with driven dust-loosening tools, e.g. rotating brushes
• CPC Class Codes: A47L 5/32 with means for connecting a hose hose couplings for suction cleaners A47L9/24
• 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
• CPC Class Codes: A47L 9/0036 specially adapted for holding the suction hose
• CPC Class Codes: F16K 31/54 with pinion and rack
• CPC Class Codes: F22B 1/284 with water in reservoirs
• CPC Class Codes: H05B 3/00 Ohmic-resistance heating

Abstract

A portable extraction surface cleaner has a base housing, an upright handle pivotally mounted to the base housing, a liquid dispensing system including a cleaning fluid supply tank for holding a supply of cleaning liquid and removably mounted in a well in the base housing, a liquid recovery system that includes a recovery tank, a suction nozzle, a working air conduit extending between the recovery chamber and the suction nozzle and a vacuum source to draw soiled liquid from the suction nozzle into the recovery tank. The vacuum source is mounted in an enclosed chamber juxtaposed to the well. A detergent supply tank is removably mounted in a second well in the base.

Claims

1. A portable surface cleaning apparatus, comprising:

a base housing adapted for movement along a surface to be cleaned;

an upright handle pivotally mounted to the base housing;

a liquid dispensing system comprising;

a liquid dispenser associated with the base module for applying liquid to a surface to be cleaned;

a liquid supply tank for holding a supply of cleaning liquid;

a liquid supply conduit fluidly connected to the liquid supply tank and to the dispenser for supplying liquid to the dispenser;

a liquid recovery system comprising;

a recovery tank removably mounted on the base housing and having a liquid recovery chamber for holding recovered liquid;

a suction nozzle associated with the base housing and adapted to draw dirty liquid from the surface to be cleaned;

a working air conduit extending between the recovery chamber and the suction nozzle;

a vacuum source in fluid communication with the recovery chamber for generating a flow of working air from the nozzle through the working air conduit and through the recovery chamber to thereby draw dirty liquid from the surface to be cleaned through the nozzle and working air conduit, and into the recovery chamber to thereby recover the dirty liquid from the surface to be cleaned;

the improvement comprising;

the base housing includes a well for selectively receiving the liquid supply tank and the base housing further includes an enclosed chamber juxtaposed to the well and the vacuum source is mounted in the enclosed chamber.

2. A portable surface cleaning apparatus according to claim 1 and further comprising a detergent supply tank removably mounted in a second well in the base for holding a supply of concentrated cleaning solution and operably fluidly connected to the liquid supply conduit for supplying a mixture of concentrated cleaning solution and water to the liquid dispenser.

3. A portable surface cleaning apparatus comprising:

a base housing adapted for movement along a surface to be cleaned;

an upright handle pivotaily mounted to the base housing;

a liquid dispensing system comprising;

a liquid dispenser associated with the base module for applying liquid to a surface to be cleaned;

a liquid supply tank for holding a supply of cleaning liquid;

a liquid supply conduit fluidly connected to the liquid supply tank and to the dispenser for supplying liquid to the dispenser;

a liquid recovery system comprising;

a recovery tank removably mounted on the base housing and having a liquid recovery chamber for holding recovered liquid;

a suction nozzle associated with the base housing and adapted to draw dirty liquid from the surface to be cleaned;

a working air conduit extending between the recovery chamber and the suction nozzle;

a vacuum source in fluid communication with the recovery chamber for generating a flow of working air from the nozzle through the working air conduit and through the recovery chamber to thereby draw dirty liquid from the surface to be cleaned through the nozzle and working air conduit and into the recovery chamber to thereby recover the dirty liquid from the surface to be cleaned;

the improvement comprising;

the base housing includes a well for selectivly receiving the liquid supply tank and further and comprising a detergent supply tank removably mounted in a second well in the base for holding a supply of concentrated cleaning solution and operably fluidly connected to the liquid supply conduit for supplying a mixture of concentrated cleaning solution and water to the liquid dispenser.