US20040040102A1 - Foamed cleaning liquid dispensing system - Google Patents

Foamed cleaning liquid dispensing system Download PDF

Info

Publication number
US20040040102A1
US20040040102A1 US10653347 US65334703A US2004040102A1 US 20040040102 A1 US20040040102 A1 US 20040040102A1 US 10653347 US10653347 US 10653347 US 65334703 A US65334703 A US 65334703A US 2004040102 A1 US2004040102 A1 US 2004040102A1
Authority
US
Grant status
Application
Patent type
Prior art keywords
cleaning liquid
flow
floor surface
output
hard floor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10653347
Inventor
Bruce Field
Bryan Christensen
Eric Blanchard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tennant Co
Original Assignee
Tennant Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/02Floor surfacing or polishing machines
    • A47L11/03Floor surfacing or polishing machines characterised by having provisions for supplying cleaning or polishing agents
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/29Floor-scrubbing machines characterised by means for taking-up dirty liquid
    • A47L11/30Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036Parts or details of the surface treating tools
    • A47L11/4044Vacuuming or pick-up tools; Squeegees
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/408Means for supplying cleaning or surface treating agents
    • A47L11/4083Liquid supply reservoirs; Preparation of the agents, e.g. mixing devices
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/408Means for supplying cleaning or surface treating agents
    • A47L11/4088Supply pumps; Spraying devices; Supply conduits
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
    • B01F3/00Mixing, e.g. dispersing, emulsifying, according to the phases to be mixed
    • B01F3/04Mixing, e.g. dispersing, emulsifying, according to the phases to be mixed gases or vapours with liquids
    • B01F3/04985Mixing systems, i.e. flow charts or diagrams
    • B01F3/04992Mixing systems, i.e. flow charts or diagrams for obtaining foams or aerosols
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/0095Preparation of aerosols

Abstract

A foamed cleaning liquid dispensing system includes a cleaner cartridge, a flow control device, and an aerator. The cleaner cartridge includes a collapsible bag containing a supply of cleaning agent. The flow control device is configured to receive a flow of the cleaning agent from the cartridge and a flow of a primary cleaning liquid component. The flow control device combines the flows of cleaning agent and primary cleaning liquid component and produces an output flow of cleaning liquid at an output. The aerator includes a nozzle having an inlet fluidically coupled to the output of the flow control device, an outlet, a body having a bore extending between the inlet and the outlet, and a radial port. The nozzle is configured to receive the output flow of cleaning liquid at the inlet, inject air into the output flow of cleaning liquid through the radial port, and produce an output flow of foamed cleaning liquid through the outlet.

Description

    FIELD OF THE INVENTION
  • The present invention relates generally to mobile hard floor surface cleaners and, more particularly, to a foamed cleaning liquid dispensing system for use in a hard floor surface cleaner. [0001]
  • BACKGROUND OF THE INVENTION
  • Hard floor surface cleaners are widely used to clean the floors of industrial and commercial buildings. They range in size from a small model that is controlled by an operator walking behind the machine, which may clean a path ranging from 15 inches to 36 inches wide, to a large model that is controlled by an operator riding on the machine, which may clean a path as wide as 5 feet. These hard floor surface cleaners include motorized drive wheels, a solution tank to hold a cleaning solution and a recovery tank to hold soiled cleaning solution recovered from the floor being scrubbed. [0002]
  • The cleaning solution from the solution tank is applied to the hard floor surface adjacent a motorized scrub head. The cleaning solution is typically a mixture of a cleaning agent and water. The scrub head generally contains one or more scrubber brushes attached either in front of, under, or behind the vehicle. The scrubber brushes are rotated to provide the desired scrubbing engagement with the hard floor surface. The soiled cleaning solution is then recovered using a solution recovery system, which returns the soiled cleaning solution to the recovery tank. [0003]
  • Conventional hard floor surface cleaners apply the cleaning liquid to the floor at a high volume flow rate to provide complete wetting of the floor being cleaned. This wetting of the hard floor surface allows the scrub head to transfer dirt from the floor into the cleaning liquid, which is then removed from the hard floor surface and deposited in the recovery tank as soiled cleaning liquid. [0004]
  • Unfortunately, the high volume flow rate of the cleaning solution of prior art hard floor surface cleaners also results in extended operational downtime due to the numerous disposals of soiled cleaning solution and refills of cleaning solution that must be performed for a given job. Such refills typically involve manually filling the solution tank with water and mixing in a cleaning agent or chemical to form the cleaning liquid. In addition to being time-consuming, such manual mixing of the cleaning liquid invites errors in the formulation. Typically, operators add too much cleaning agent to the water, which results in an undesirable residue of the cleaning agent on the floor. The residue can be unsightly and slippery. [0005]
  • There is a continued demand for improvements to hard floor surface cleaners including increasing the cleaning efficiency, improving control of the cleaning liquid formulation, reducing residue on the hard floor surface following a cleaning operation, and other improvements. [0006]
  • SUMMARY
  • The present invention is directed to a foamed cleaning liquid dispensing system for use in a mobile hard floor surface cleaner. Embodiments of the present invention operate to increase cleaning efficiency and improve the control of the cleaning liquid formulation by automating the formulation of the cleaning liquid. Additionally, the cleaning liquid dispensing system of the present invention converts the cleaning liquid into a foamed cleaning liquid to improve the cleaning efficiency of the cleaning liquid, which allows for a reduction to the amount of cleaning agent that is used in the cleaning liquid formulation. This reduction to the amount of cleaning agent in the cleaning formulation reduces the amount of residue that remains on the hard floor surface following a cleaning operation resulting in better looking and safer floors. [0007]
  • The foamed cleaning liquid dispensing system generally includes a cleaner cartridge, a flow control device, and an aerator. The cleaner cartridge includes a collapsible bag containing a supply of cleaning agent. The flow control device is configured to receive a flow of the cleaning agent from the cartridge and a flow of a primary cleaning liquid component. The flow control device combines the flows of cleaning agent and primary cleaning liquid component and produces an output flow of cleaning liquid at an output. The aerator includes a nozzle having an inlet fluidically coupled to the output of the flow control device, an outlet, a body having a bore extending between the inlet and the outlet, and a radial port. The nozzle is configured to receive the output flow of cleaning liquid at the inlet, inject air into the output flow of cleaning liquid through the radial port, and produce an output flow of foamed cleaning liquid through the outlet. [0008]
  • Additional embodiments of the present invention are directed to a hard floor surface cleaner that includes embodiments of the above-described foamed cleaning liquid dispensing system, and a foamed cleaning liquid dispensing kit in which embodiments of the above-described foamed cleaning liquid dispensing system are packaged for installation into a hard floor surface cleaner. [0009]
  • Other features and benefits that characterize embodiments of the present invention will be apparent upon reading the following detailed description and review of the associated drawings.[0010]
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is simplified side elevation view of a hard floor surface cleaner in accordance with embodiments of the invention. [0011]
  • FIG. 2 is a cross-sectional view of a fluid recovery system and recovery tank of a hard floor surface cleaner in accordance with embodiments of the invention. [0012]
  • FIG. 3 is a schematic diagram of a foamed cleaning liquid dispensing system in accordance with embodiments of the invention. [0013]
  • FIG. 4 is a simplified front elevation view of a hard floor surface cleaner having an open front portion exposing a foamed cleaning liquid dispensing system in accordance with embodiments of the invention. [0014]
  • FIG. 5 is a front elevation view and partial cross-section of a cleaner cartridge in accordance with an embodiment of the invention. [0015]
  • FIG. 6 is a front elevation view of a cleaner cartridge illustrating various embodiments of the invention. [0016]
  • FIG. 7 is a perspective view of a housing of a cleaner cartridge in accordance with embodiments of the invention. [0017]
  • FIG. 8 is a perspective view of a cleaner cartridge installed on a cartridge receiver in accordance with an embodiment of the invention. [0018]
  • FIG. 9 is a cross-sectional view of an aerating nozzle in accordance with embodiments of the invention. [0019]
  • FIGS. 10 and 11 are schematic diagrams of a foamed cleaning liquid distributor and aerator in accordance with embodiments of the invention. [0020]
  • FIG. 12 is a side cross-sectional view of a portion of a scrub head and foamed cleaning liquid distributor in accordance with an embodiment of the invention. [0021]
  • FIG. 13 is a schematic diagram of a foamed cleaning liquid distributor and aerator in accordance with embodiments of the invention. [0022]
  • FIG. 14 is a cross-sectional view of distributing conduit shown in FIG. 13 taken generally along line [0023] 14-14.
  • FIG. 15 is a schematic diagram of a foamed cleaning liquid distributor and aerator in accordance with embodiments of the invention. [0024]
  • FIG. 16 is a schematic diagram of a foamed cleaning liquid distributor in accordance with embodiments of the invention. [0025]
  • FIGS. 17 and 18 are simplified front and side views of a leading portion of a hard floor surface cleaner in accordance with embodiments of the invention. [0026]
  • FIG. 19 is a side elevation view of a scrubber-less hard floor surface cleaner in accordance with embodiments of the invention. [0027]
  • FIGS. 20 and 21 are simplified front and side views of a leading portion of a hard floor surface cleaner in accordance with embodiments of the invention.[0028]
  • DETAILED DESCRIPTION
  • The present invention is directed to a foamed cleaning liquid dispensing system, generally designated as [0029] 100, for use with a hard floor surface cleaner, such as hard floor surface cleaner 110 shown in FIG. 1. Hard floor surface cleaner 110 is illustrated as a walk-behind cleaner used to clean hard floor surfaces 111, such as concrete, tile, vinyl, terrazzo, etc., over which cleaner 110 travels. Alternatively, cleaner 110 can be a ride-on or towed-behind cleaner performing a scrubbing operation as described herein. Cleaner 110 may include electrical motors powered through an on-board power source, such as batteries, or through an electrical cord. Alternatively, an internal combustion engine system could be used either alone, or in combination with, the electric motors.
  • Cleaner [0030] 110 generally includes a recovery tank 112, a lid 114, a cleaning liquid component tank 118, and a scrub head 120. Lid 114 is attached along one side of the recovery tank 112 by hinges (not shown) so that lid 114 can be pivoted up to provide access to the interior of tank 112. Tank 118 contains a primary cleaning liquid component (i.e. water) that is combined with a cleaning agent by the dispensing system 100 of the present invention to form a cleaning liquid that can be applied to hard floor surface 111, as will be discussed in greater detail below. Scrub head 120 includes a scrubbing member 122, shrouds 124, and a scrubbing member drive 126. Scrubbing member 122 may be one or more brushes, such as bristle brushes, pad scrubbers, or other hard floor surface scrubbing elements. Drive 126 includes one or more electric motors to rotate the scrubbing member 122. Drive 126 may also oscillate scrubbing member 122. Scrub head 120 is attached to cleaner 110 such that scrub head 120 can be moved between a lowered cleaning position and a raised traveling position. Other embodiments of cleaner 110 will be discussed below that utilize alternative scrub heads 120 and that eliminate the scrub head 120 completely.
  • A machine frame or mobile body [0031] 127 supports recovery tank 112 on wheels 128 and castors 129. Details of the frame are shown and described in U.S. Pat. No. 5,611,105, the disclosure of which is incorporated herein by reference. Wheels 128 are preferably driven by a motor and transaxle assembly shown schematically at 130.
  • The rear of the frame [0032] 127 carries a linkage 131 to which a fluid recovery device 132 is attached. In the embodiment of FIG. 1, the fluid recovery device 132 includes a vacuum squeegee 134 and a vacuum 135 communication with an inlet chamber of recovery tank 112 through a hose 136, which is illustrated in greater detail in FIG. 2. The bottom of the inlet chamber is provided with a drain 140 with a drain hose 142 connected to it. Soiled cleaning solution that is collected by squeegee 134 is sucked into recovery tank 112 by vacuum 135. A residue of cleaning liquid typically remains on the hard floor surface 111 until air dried. Alternative mechanical devices, structures, or systems may be used to convey the soiled solution from the floor surface into recovery tank 112.
  • Cleaner [0033] 110 can include a battery compartment 150 in which batteries 152 reside. Batteries 152 provide power to drive motors 126, vacuum fan 154 of vacuum 135, and other electrical components of cleaner 110. Vacuum fan 154 is mounted under lid 114. A control unit 156 mounted on the rear of the body of cleaner 110 includes steering control handles 158 and operating controls and gages for cleaner 110. Additional aspects of automatic hard floor surface cleaners are disclosed in U.S. Pat. Nos. 5,483,718, 5,515,568, and 5,566,422, each of which are incorporated herein by reference.
  • Foamed cleaning liquid dispensing system [0034] 100 of the present invention dispenses a wet foamed cleaning liquid for use by the hard floor surface cleaner 110 during surface cleaning operations. In general, dispensing system 100 combines a cleaning agent with a primary cleaning liquid component (i.e., water) to form a cleaning liquid, which is then aerated to produce a foamed cleaning liquid for use by cleaner 110 to clean a hard floor surface. As will be discussed below, the foamed cleaning liquid is a very wet foam that allows for the complete wetting of the hard floor surface. Additionally, the foamed cleaning liquid utilizes very little cleaning agent thereby reducing the amount of residue remaining on the hard floor surface, reducing chemical waste, and extending the life of the cleaning agent supply.
  • FIG. 3 is a schematic diagram of dispensing system [0035] 100 in accordance with various embodiments of the invention. FIG. 4 is a simplified front view of cleaner 110 that includes dispensing system 100. Dispensing system 100 generally includes a supply of cleaning agent 200, a flow control device 202, and an aerator 204. Flow control device 202 includes a cleaning agent input 206 that is configured to receive a flow of cleaning agent 208 from supply 200. Flow control device 202 is also configured to receive a flow of primary cleaning liquid component 210 at an input 212. Flow control device 202 is further configured to combine the flows of cleaning agent 208 and primary cleaning liquid component 210 and produce an output flow of cleaning liquid 214 at an output 216. Aerator 204 is configured to receive the output flow of cleaning liquid 214 and aerate the cleaning liquid to produce an output flow of foamed cleaning liquid 218. A foamed cleaning liquid distributor 220 can receive the output flow of foamed cleaning liquid 218 and discharge the output flow 218 for wetting of a surface 222, as illustrated in FIG. 2.
  • The primary cleaning liquid component [0036] 224 is preferably water and is contained in tank 118 or provided from another source. The flow of primary cleaning liquid component 210 is preferably driven through conduit 226 by a pump 228 at a flow rate that is desired for the cleaning operation. In accordance with one embodiment of the invention, the flow of primary cleaning liquid component 210 is driven at a substantially constant flow rate of approximately 0.5 gallons per minute. Pump 228 is generally positioned in line with fluid conduit 226 and includes an outlet 230 that is maintained at a desired high pressure. In accordance with one embodiment of the invention, the pressure at outlet 230 is held substantially constant at approximately 60 pounds per square inch (psi).
  • Cleaning agent supply [0037] 200 may include one or more surfactants, builders, solvents, or other components. In accordance with one embodiment of the invention, cleaning agent 200 includes an anionic surfactant, a non-anionic surfactant, a cationic surfactant, or a combination thereof. A particularly preferred surfactant is DeTeric CP-Na-38 manufactured by DeForest Enterprises, Inc. of Boca Raton, Fla. Cleaning agent is preferably in a concentrated form (e.g., more than 30, solids). In accordance with one embodiment of the invention, the supply of cleaning agent 200 is contained in a container such as a collapsible bag 232 of a cleaner cartridge 234 (FIG. 2), which will be discussed in greater detail below.
  • Flow control device [0038] 202 preferably combines the flow of cleaning agent 208 with the flow of primary cleaning liquid component 210 at a ratio of 1 part cleaning agent to 1000 parts primary cleaning liquid component. Accordingly, the resultant cleaning liquid 214 is formed of 0.1% cleaning agent, which is substantially less than conventional hard floor surface cleaning liquids. As a result, the present invention leaves very little cleaning agent residue on the surface 222, produces very little chemical waste, and increases the life of the cleaning agent supply 200.
  • Flow control device [0039] 202 injects the flow of cleaning agent 208 into the flow of primary cleaning liquid component using an injector 236 at a rate that is generally less than 10.0 cubic centimeters per minute and is preferably less than approximately 2.0 cubic centimeters per minute to provide the desired 0.1% concentration level of cleaning agent in the cleaning liquid 214 when the flow of primary cleaning liquid 210 is approximately 0.5 gallons per minute. Injector 236 preferably operates to siphon the cleaning agent flow 208 from the supply 200 using a venturi member 238. In operation, the flow of primary cleaning liquid through venturi member 238 creates a vacuum, preferably approximately −12.0 psi, that draws the flow of cleaning agent 208 into the flow of primary cleaning liquid component 210 at the desired rate. One such suitable flow control device 202 is the 50580 siphon produced by Spraying Systems Company of Wheaton, Ill.
  • The vacuum produced by flow control device [0040] 202 allows the supply 200 contained in collapsible bag 232 of cleaner cartridge 234 to be completely drained regardless of its position. That is, cleaner cartridge 234 can be positioned below flow control device 202 without affecting the draw of the cleaning agent 200 through conduit 240. However, it is preferred that the length of conduit 240 be kept to a minimum to avoid unnecessary resistance to the flow of cleaning agent 208 therethrough.
  • In accordance with one embodiment of the invention, the injector [0041] 236 is adjustable using, for example, a needle seat valve 242 that is configured to provide accurate adjustment to the slow output flow of cleaning agent 208. Needle seat valve 242 preferably includes a sharp needle having for example, a two degree needle tip for improved sensitivity.
  • Dispensing system [0042] 100 preferably includes a valve 244 as a component of flow control device 202 (FIG. 2) or as a separate component (FIG. 3) that is in line with supply 200. Valve 244 can also be formed as part of the injector 236. In accordance with one embodiment of the invention, valve 244 is a check valve that operates to prevent the backflow of cleaning agent and/or primary cleaning liquid component through flow control device 202 when the flow rate of the flow of primary cleaning liquid component 210 drops below a threshold value. For example, valve 244 can be a 1.0 psi check valve that terminates the flow of cleaning agent 208 when the pressure at the upstream side 246 is below 1.0 psi, as would occur when pump 228 is deactivated.
  • In accordance with one embodiment of the invention, system [0043] 100 includes one or more additional supplies of cleaning agent that can be selectively mixed with the flow of primary cleaning liquid component 210 in addition to first supply of cleaning agent 200 or in the alternative. Thus, system 100 can include a second supply of cleaning agent 250, such as a surfactant as described above for first cleaning agent supply 200. Alternatively, second cleaning agent supply 250 can be a brightener, a disinfectant, or other surface treatment chemical. Supply of second cleaning agent 250 is preferably contained in a container, such as collapsible bag 232, of a cleaner cartridge 234 as discussed above with respect to first cleaning agent supply 200.
  • In accordance with one embodiment of the invention, a second flow control device [0044] 252 is provided to control the injection of a flow 254 of the second cleaning agent from supply 250. Flow control device 252 includes valve 256 and an injector 258, which generally operate in the manner described above for the corresponding components of flow control device 202. Valves, such as valves 244 and 256, can be selectively opened and closed to control whether one or both of the first and second cleaning agent supplies 200 and 250 is added to the flow of the primary cleaning liquid component 210 to form the desired cleaning liquid 214. Alternatively, second cleaning agent supply 250 can be fed to valve 244 of flow control device 202, which can be a multi-way valve capable of selecting either flow 208 of first cleaning agent 200 or flow 254 of second cleaning agent 250 to be passed to injector 236.
  • As mentioned above, the cleaning agents, such as first and second cleaning agents [0045] 200 and 250, are preferably contained in a cleaner cartridge 234, as will be discussed in greater detail with reference to FIGS. 5-8. Cleaner cartridge 234 generally includes a container 260 having an interior cavity 262 and conduit 264, as shown in FIG. 5. Conduit 264 includes a first end 266 that is fluidically coupled to interior cavity 262 and a second end 268 that is connectable to flow control device 202 through, for example, conduit 240 (FIG. 4). A volume of 2.8 liters, for example, of the supply of cleaning agent 200 can preferably be contained within interior cavity 262 for dispensing to flow control device 202 through conduit 264 and 240.
  • Container [0046] 260 is preferably a collapsible bag 232 that is completely sealed except where connected to conduit 264. Thus, container 260 shrinks as the cleaning agent 200 stored therein is depleted. In accordance with this embodiment, container 260 can be formed of vinyl or other suitable material. Alternatively, container 260 can take the form of a rigid container, such as a box, that includes a vent for replacing dispensed cleaning agent 200 with air. Container 260 can be transparent or translucent to allow the cleaning agent 200 to be viewed. Additionally, container 260 can be formed of a material that prevents the exposure of the cleaning agent contained therein from light.
  • First end [0047] 266 of conduit 264 is preferably attached to container 260 such that it is flush with the inside of outlet 270. A seal 272 is formed between first end 266 and container 260 at outlet 270 to prevent cleaning agent 200 from escaping at that junction. In accordance with one embodiment, seal 272 includes an annular neck 274 surrounding first end 266 and adjoining container 260. A weld can be formed between annular neck 274, first end 266 and container 152 to further seal the junction. Other methods for sealing the junction of first end 266 and container 260 can also be used.
  • Conduit [0048] 264 can also include a flow control member 276, shown in FIG. 6, mounted to second end 268 of conduit 264 to terminate the flow of cleaning agent 200 therethrough when conduit 264 is disconnected from flow control device 202. Flow control member 276 preferably includes a connector (quick-disconnect coupling) 278 that includes a shut-off valve that is actuated when disconnected from flow control device 202 to seal container 260 and prevent the out flow of cleaning agent 200 therethrough. Other types of flow control members 276 can also be installed at second end 268 of conduit 264 to seal interior cavity 262 of container 260 such as a valve, a metering device, a clamp, a membrane, or a cap.
  • In accordance with one embodiment of the invention, cleaner cartridge [0049] 234 includes a housing 280, shown in FIG. 7, that can enclose container 260, conduit 264, connector 278 and flow control member 276. Housing 280 provides protection and support to container 260, which is particularly useful when container 260 is in the form of a collapsible bag 232. Housing 280 is preferably made from a single piece of rigid or semi-rigid material, such as plastic, cardboard and/or metal that is folded to form a box, which is preferably glued shut at, for example, tab 282. In accordance with a preferred embodiment, housing 280 is formed of corrugated plastic or cardboard.
  • Housing [0050] 280 also includes openings 284 and 286 on at least one side wall 288 that are preferably defined by removable portions 290 and 292, respectively. Portions 290 and 292 have perforated edges 294 and 296, which facilitate their easy removal to expose openings 284 and 286. Housing 280 can also include apertures 298 and 300 to provide finger access to further simplify the removal of portions 290 and 292. Opening 284 generally provides visual access to container 260 and allows a user to asses the volume of cleaning agent 200 contained therein. Opening 286 also provides access to conduit 264, connector 278 and flow control member 276 for connection to flow control device 202. In accordance with one embodiment of the invention, opening 290 and removable portion 292 can also be formed on bottom 302 through which conduit 264 can extend for efficient dispensing of the cleaning agent 200 in container 260, as shown in FIG. 7. Other openings can also be provided in housing 280 as desired.
  • Cleaner cartridge [0051] 234 is preferably removably receivable in a cartridge receiver 304 of cleaner 110, shown in FIG. 8. Cartridge receiver 304 can be a bracket having a back plate 306, opposing side walls 308 and 310, a front wall 312, and a bottom 314. Back plate 306 is mountable to a wall of cleaner 110 to position cleaner cartridge 234 proximate flow control device 202. Bottom 314 and side wall 308 include an opening through which conduit 264 can extend for connection to flow control device 202. Cartridge 234 can be secured to cartridge receiver 304 using a strap or other suitable means. Due to the limited jostling that occurs during cleaning operations, such securing devices are typically unnecessary. Multiple cleaner cartridges 234 can be provided proximate their corresponding flow control device 202 to accommodate the multiple chemical dispenser embodiment of the invention illustrated in FIG. 3.
  • In operation, cleaner cartridge [0052] 234 is provided and a supply of cleaning agent 200 is stored in interior cavity 262 of container 260. Next, second end 268 of conduit 264 is coupled to flow control device 202 and cartridge 234 is installed in cartridge receiver 304. Flow control device 202 can then receive the supply of cleaning agent 200 through conduit 264 and provide a controlled output flow 208 of cleaning agent, as discussed above. When container 260 is a collapsible bag 232, container 260 collapses in response to the output flow of cleaning agent 208.
  • Aerator [0053] 204 preferably includes at least one aerating nozzle 320, as shown in FIG. 4 and the simplified cross-sectional view of FIG. 9. Nozzle 320 includes a nozzle body 322 having an inlet 324 fluidically coupled to the output 216 of the flow control device 202 for receiving the output flow of cleaning liquid 214. A suitable fitting 326 (FIG. 4) can connect to nozzle 320 at threaded section 328 (FIG. 9) to couple inlet 324 to conduit 330 through which cleaning liquid flow 214 travels from output 216 of flow control device 202. The output flow of cleaning liquid 214 travels through a bore 332 toward an outlet 334 of nozzle 320. The bore 332 includes a constricted throat portion 336 having a convergent upstream end 338 and a divergent downstream end 340. Nozzle 320 also includes one or more radial ports 342 extending through a side 344 of the body 322 to throat 336. Air, represented by arrows 346, is sucked through radial ports 342 in response to a vacuum generated within throat 336 by the output flow of cleaning liquid 214 for mixing therewith. The aeration of the cleaning liquid 214 by air induction through radial ports 242 produces the aerated or foamed cleaning liquid 218 that is discharged through outlet 334 of nozzle 320. One example of a suitable nozzle 320 is the “FoamJet” nozzle (also designated as FJP-20015-CE) produced by Spraying Systems Company of Wheaton, Ill.
  • A check valve, such as check valve [0054] 350 shown in FIG. 4, is preferably upstream of outlet 334 of nozzle 320 to terminate the flow of cleaning liquid 214 through nozzle 320 when pump 228 is deactivated. Preferably, the check valve 350 is integrated into nozzle 320.
  • The foamed cleaning liquid [0055] 218 from aerator 204 is a very wet foam relative to that used by carpet cleaners. Such a wet foam is necessary to provide the desired wetting of the hard floor surface. A foam's “wetness” or “dryness” may be defined in relation to this volumetric expansion ratio. A “dry” foam has a higher expansion ratio as compared to a “wet” foam. High-expansion foams are “dry” due to the high ratio of air to water and are useful in carpet cleaning to facilitate quick drying of the cleaned carpet. A “wet” foam is not used in carpet cleaning devices since they can cause excessive wetting of the carpet, which leads to long drying times and may result in mold development. In a particular embodiment of the invention, the ratio of volumes between the cleaning liquid (non-aerated) 214 and the foamed cleaning liquid 218 is approximately 1:8. For example, 0.15 gallons of cleaning liquid is aerated to occupy 1.25 gallons. Other volume ratios would yield acceptable wetting results as well.
  • Foamed cleaning liquid dispensing system [0056] 100 can also include a foamed cleaning liquid distributor 220, shown schematically in FIG. 3. Foamed cleaning liquid distributor 220 is generally configured to direct the output flow of foamed cleaning liquid 218 for wetting of a surface 222, such as surface 111 on which cleaner 110 travels; wetting the scrubbing member 122 of scrub head 120; or other surfaces as will be discussed below. In accordance with one embodiment of the invention, foamed cleaning liquid distributor 220 includes nozzle 320, which directs the output flow of foamed cleaning liquid 218 directly to the desired surface 222, such as surface 111, as illustrated in the schematic diagram of FIG. 10. One or more nozzles 320 can be fluidically coupled to the output flow of cleaning liquid 214 by conduit 330 to cover a wide section of surface 211 that extends across a width of cleaner 110. Outlet 334 of each nozzle 320 is preferably slotted to provide wide dispersion of the foamed cleaning liquid output flow 218. As mentioned above, check valves 350 can be placed upstream of outlet 334 of nozzle 320 to prevent passage of cleaning liquid 214 through conduit 330 when pump 228 (FIGS. 3 and 4) is deactivated.
  • In accordance with another embodiment of the invention, foamed cleaning liquid distributor [0057] 220 receives the output flow of foamed cleaning liquid 218 from outlet 334 of nozzle 320 and discharges the output flow of foamed cleaning liquid 218 for wetting of the desired surface 222, such as surface 111, as shown in FIG. 11. In accordance with one embodiment of the invention, foamed cleaning liquid distributor 220 includes distributing conduit 352 having a first end 354 coupled to outlet 334 of nozzle 320 that receives the foamed cleaning liquid flow 218 and discharges the flow 218 to the desired surface 222, as shown in FIGS. 1, 4 and 11. Distributing conduit 352 can include one or more sections or branches 356 that receive foamed cleaning liquid flow 218 from a second end 358 of conduit 352 and operate to spread out the discharging of the foamed cleaning liquid flow 218 directly to surface 222, such as surface 111 across the width of cleaner 110, as shown in FIG. 11. Check valves 360 can be provided in each branch 356 of distributing conduit 352, or in line with the branch 362 of distributing conduit 352 receiving the cleaning liquid flow 218 from outlet 334 of nozzle.
  • Branches [0058] 356 can also be configured to discharge the foamed cleaning liquid flow 218 onto scrubbing member 122 of scrub head 120, as shown in FIGS. 1 and 4, which in turn wets surface 111. As illustrated in FIG. 12, distributing conduit 352 can discharge foamed cleaning liquid flow 218 into an annular trough 364 in the hub 366 of the rotating scrubbing members 122. A series of holes 368 in the bottom of trough 364 pass the foamed cleaning liquid 218 down to the central region of the scrubbing member 122. During operation, the foamed cleaning liquid 218 is centrifuged out under the scrubbing member 122 in contact with the hard floor surface 111.
  • Another embodiment of distributing conduit [0059] 352 is illustrated in the front plan view of FIG. 13 and the cross-sectional view of FIG. 14 taken generally along line 14-14 of FIG. 13. Distributing conduit 352 includes one or more substantially horizontal sections or branches 356 that include a plurality of apertures 370 in a top side 372 that is opposite a floor-facing side 374. Sections 356 of distributing conduit 352 are preferably formed of rigid plastic tubing that is mounted to cleaner 110 in a desired location. Each section 356 includes an end cap 376 closing an end 378. During operation, foamed cleaning liquid flow 218 travels into closed sections 356. Once sections 356 fill with foamed cleaning liquid 218, the foamed cleaning liquid 218 is discharged through apertures 370. The discharged foamed cleaning liquid 218 flows over the exterior surface 380 of sections 356 and drops to the surface immediately below, such as surface 111. Preferably, the apertures 370 positioned closest to ends 378 have a larger diameter than those farther from ends 378 to compensate for pressure drops in sections 356. This design of foamed cleaning liquid distributor 220 prevents undesirable dripping of foamed cleaning liquid 218 to the surface following deactivation of pump 228 of dispensing system 100 by containing the foamed cleaning liquid 218 within sections 356 of distributing conduit 352.
  • In accordance with another embodiment of the invention, foamed cleaning liquid distributor [0060] 220 includes a wand member 390, shown in FIG. 15, that allows a user to direct the foamed cleaning liquid is discharged to a surface 392 that is remote from cleaner 110. Wand member 390 generally includes a rigid tubing section 394 supporting nozzle 320 of aerator 204 at a dispensing end 396. Accordingly, wand member 390 can operate in the manner described above with reference to FIG. 10. A length of flexible tubing 330 connects a receiving end 398 to output 216 of flow control device 202. During operation a user can extend the tubing 330 from cleaner 110 and apply the foamed cleaning liquid 218 to remote surface 392, such as a wall or an object, for cleaning.
  • FIG. 16 is a schematic diagram of a foamed cleaning liquid distributor [0061] 220 that includes first and second distributing components 400 and 402, respectively. The discharging of foamed cleaning liquid 218 through either first or second distributing component 400 or 402 is controlled by a valve 404. First and second distributing components 400 and 402 can comprise any of the embodiments of foamed cleaning liquid distributor 220 described above. For example, first distributing component 400 can take the form of wand member 390 and second distributing component 402 can take the form of distributing conduit 352 shown in FIG. 11. As a result, foamed cleaning liquid 218 can be easily applied to different types of surfaces, such as surfaces 406 and 408.
  • As discussed above, hard floor surface cleaner [0062] 110 can be configured to include a motorized scrub head 120 that includes a scrubbing member 122 that is configured for rotating engagement with hard floor surface 111, over which the mobile body 127 of cleaner 110 travels. FIGS. 17 and 18 show simplified front and side views of a front or leading portion of a cleaner 110 that includes a scrub head 120 in accordance with another embodiment of the invention. Scrub head 120 includes a scrubbing member 122 formed of a plurality of discs 410 mounted to a shaft 412 that is rotated by a motor (not shown). The discs 410 are preferably concentrically aligned with the axis of rotation 414 of the shaft 412 and can be positioned to engage surface 111. Discs 410 can be mounted to shaft 412 using glue or other suitable means. Discs 410 are preferably formed of a liquid absorbing material, such as material composed of approximately 70% polyester and 30% polyamide, or microfiber. Such liquid absorbing material is known to hold many times its weight in viscous liquid. Additionally, such material collects dirt, dust, mildew and other materials without a need for a large volume of foamed cleaning liquid 218, thereby eliminating a need for fluid recovery device 132 (FIG. 1). Large particles of dirt and dust that do not adhere to the discs 410 can be captured by a debris collector 416 positioned immediately behind scrub head 120. Another advantage to the vertically oriented discs 410 is that they can clean grooves that may be encountered in tile, brick, cement, and rock floors. As illustrated in FIG. 18, foamed cleaning liquid distributor 220 can discharge the foamed cleaning liquid 218 to a leading side 418 of scrub head 120 as indicated by arrow 420, on discs 410 as indicated by arrow 422, or even through the scrubbing member 122.
  • FIG. 19 is a simplified side elevation view of another embodiment of hard floor surface cleaner [0063] 110 that does not include a motorize scrub head 120. Such a scrubber-less cleaner 110 can be used on delicate floor surfaces that would be susceptible to abrasive damage from contact with rotating scrubbing members 122. Cleaner 110 relies upon the cleaning power of the foamed cleaning liquid 218 that is applied to hard floor surface 111 by system 100, as illustrated by arrow 430, to clean the surface 111. The wetting of the floor with the foamed cleaning liquid 218 traps dirt particles with the bubbles of the foam, which are then carried into the recovery tank 112 by the fluid recovery system 132. The scrubber-less cleaner 110 uses far less power than those including motorized scrub heads 120 thereby allowing for the removal of some of the batteries 152 used to power cleaner 110. Scrubber-less cleaner 110 can also be formed much lighter and smaller due to the elimination of scrub head 120 and batteries 152, or the solution and recovery tanks 118 and 112 can be formed larger to accommodate longer operational runtimes for cleaner 110. Finally, the elimination of some of the components of cleaner 110 allows scrubber-less cleaner 110 to be manufactured quicker and cheaper that those incorporating scrub heads 120.
  • In order to facilitate complete wetting of hard floor surface [0064] 111, cleaner 110 can include a non-motorized wetting component 440, shown in FIGS. 20 and 21, which are front and side views of a leading portion of cleaner 110, respectively. Wetting component 440 generally includes a plurality of liquid dispersing members 442 each having a first end 444 that is connected adjacent to a bottom side 446 of mobile body 127 of cleaner 110. A second end 448 of each liquid dispersing member 442 is positioned to engage hard floor surface 111. Liquid dispersing members 442 are preferably formed of a soft material that conforms to surface 111. Foamed cleaning liquid 218 is discharged by foamed cleaning liquid distributor 220 of dispensing system 100 either on members 442 as indicated by arrow 450, or to a leading side of members 442 as indicated by arrow 452, as shown in FIG. 21. Liquid dispersing members 442 evenly distribute the foamed cleaning liquid 218 on surface 111 as cleaner 110 moves across surface 111. Cleaner 110 may include a scrub head 120 downstream of liquid dispersing members 442 to scrub surface 111 with evenly distributed foamed cleaning liquid 218 thereon, or cleaner 110 can be scrubber-less and a portion of the foamed cleaning liquid 218 can be removed from surface 111 by fluid recovery system 132.
  • Another embodiment of the invention is directed to a foamed cleaning liquid dispensing kit that is configured to be retrofitted to a hard floor surface cleaner [0065] 110 that includes a primary cleaning liquid component dispenser (i.e., tank 218 and pump 228) that is configured to provide an output flow 210 of primary cleaning liquid component (FIG. 3). The kit includes packaging containing a supply of cleaning agent (such as supply 200), a flow control device (such as 202), and an aerator (such as 204) that are formed in accordance with the embodiments described above. The packaging can be any suitable packaging such as a bag, a shrink-fit package, a box, a canister, etc. In accordance with one embodiment of the invention, supply of cleaning agent 200 is contained in a cleaner cartridge 234. Conduit sections (such as 240 and 330) can also be contained in the packaging. Additionally, embodiments of foamed cleaning liquid distributor 220 can be included in the kit and contained in the packaging.
  • Although the present invention has been described with reference to preferred embodiments, workers skilled in the art will recognize that changes may be made in form and detail without departing from the spirit and scope of the invention. It should be understood that fittings, couplings and other conventional components have not been illustrated to simplify the figures. [0066]

Claims (61)

    What is claimed is:
  1. 1. A foamed cleaning liquid dispensing system for use in a mobile hard floor surface cleaner comprising:
    a cleaner cartridge including a collapsible bag containing a supply of cleaning agent;
    a flow control device configured to receive a flow of cleaning agent from the cartridge and a flow of a primary cleaning liquid component, combine the flows of the cleaning agent and the primary cleaning liquid component, and produce an output flow of cleaning liquid at an output; and
    an aerator including a nozzle having an inlet fluidically coupled to the output of the flow control device, an outlet, a nozzle body having a bore extending between the inlet and the outlet, and at least one radial port extending through a side of the nozzle body to the bore, the nozzle configured to receive the output flow of cleaning liquid at the inlet, inject air into the output flow of cleaning liquid through the radial port, and produce an output flow of foamed cleaning liquid through the outlet.
  2. 2. The system of claim 1 including a foamed cleaning liquid distributor configured to receive the output flow of foamed cleaning liquid and discharge the output flow of foamed cleaning liquid for wetting of a surface.
  3. 3. The system of claim 2, wherein the distributor is configured to direct the output flow of foamed cleaning liquid directly to a hard floor surface.
  4. 4. The system of claim 2, wherein the distributor is configured to direct the output flow of foamed cleaning liquid onto or through a scrubbing member of a motorized scrubber.
  5. 5. The system of claim 2, wherein the distributor includes distributing conduit having a first end coupled to the nozzle output, whereby the output flow of foamed cleaning liquid discharged through the nozzle output is received by the distributing conduit.
  6. 6. The system of claim 5, wherein the distributing conduit includes a section having a plurality of apertures.
  7. 7. The system of claim 2, wherein the distributor includes a wand member through which the output flow of foamed cleaning liquid is discharged.
  8. 8. The system of claim 7, wherein the wand member includes the nozzle and a section of tubing connecting the nozzle input to the output of the flow control device.
  9. 9. The system of claim 1, wherein the output flow of foamed cleaning liquid is approximately 0.5 gallons per minute or less.
  10. 10. The system of claim 1, wherein the output flow of cleaning agent is less than 10.0 cubic centimeters per minute.
  11. 11. The system of claim 1, wherein the flow control device includes a valve configured to terminate the output flow of cleaning agent when a flow rate of the output flow of the primary cleaning liquid component drops below a threshold value.
  12. 12. The system of claim 1, wherein the flow control device includes an injector component through which the output flow cleaning agent is discharged into the output flow of the primary cleaning liquid component.
  13. 13. The system of claim 12, wherein the output flow of cleaning agent through the injector component of the flow control device is adjustable.
  14. 14. The system of claim 1 including a valve downstream of the output of the flow control device relative to the output flow of cleaning liquid, the valve configured to selectively terminate the output flow of cleaning liquid.
  15. 15. The system of claim 5, wherein the distributing conduit includes a substantially horizontal section having a closed end and plurality of apertures in a top side, wherein the output flow of foamed cleaning liquid is routed through the apertures in the top side.
  16. 16. The system of claim 5, wherein the distributing conduit includes a substantially horizontal section having first and second closed ends and plurality of apertures in a top side, wherein the output flow of foamed cleaning liquid is routed through the apertures in the top side.
  17. 17. The system of claim 5, wherein the distributing conduit includes a second end coupled to a plurality of conduit sections.
  18. 18. The system of claim 2, wherein the foamed cleaning liquid distributor includes first and second distributing components and a valve selectively controlling the output flow of foamed cleaning liquid to the first and second distributing components.
  19. 19. The system of claim 18, wherein the first distributing component is configured to direct the output flow of foamed cleaning liquid to a hard floor surface on which the mobile body travels and the second distributing component is configured for remote distribution of the output flow of foamed cleaning liquid.
  20. 20. The system of claim 19, wherein the second distributing component is a wand member configured to receive the output flow of foamed cleaning liquid from the valve through a length of tubing.
  21. 21. The system of claim 1 including a supply of a second cleaning agent.
  22. 22 The system of claim 21 including a second flow control device configured to receive a flow of the second cleaning agent and the flow of primary cleaning liquid component, combine the flows of the second cleaning agent and the primary cleaning liquid component, and produce a second output flow of cleaning liquid at an output.
  23. 23 The system of claim 21, including a valve configured to selectively direct a flow of the first cleaning agent or a flow of the second cleaning agent through the flow control device.
  24. 24. The system of claim 1, wherein the cleaning agent includes a surfactant.
  25. 25. The system of claim 1, wherein the cleaning agent is in concentrated form.
  26. 26. The system of claim 25, wherein the cleaning agent includes at least 30% solids.
  27. 27. The system of claim 21, wherein the supply of a second cleaning agent is contained in a collapsible bag of a second cleaner cartridge.
  28. 28. The system of claim 1, wherein the bore of the nozzle includes a constricted throat portion having a convergent upstream end and a divergent downstream end, and the radial port is positioned at the constricted throat portion.
  29. 29. A hard floor surface cleaner comprising:
    a mobile body;
    a supply of primary cleaning liquid component contained in the mobile body and having an output flow of primary cleaning liquid component;
    a cleaner cartridge including a collapsible bag containing a supply of cleaning agent;
    a flow control device configured to receive a flow of cleaning agent from the cartridge and the output flow of primary cleaning liquid component, combine the flows of the cleaning agent and the primary cleaning liquid component, and produce an output flow of cleaning liquid at an output; and
    an aerator including a nozzle having an inlet fluidically coupled to the output of the flow control device, an outlet, a nozzle body having a bore extending between the inlet and the outlet, and at least one radial port extending through a side of the nozzle body to the bore, the nozzle configured to receive the output flow of cleaning liquid at the inlet, inject air into the output flow of cleaning liquid through the radial port, and produce an output flow of foamed cleaning liquid through the outlet; and
    a foamed cleaning liquid distributor configured to receive the output flow of foamed cleaning liquid from the outlet of the nozzle and discharge the output flow of foamed cleaning liquid for wetting of a surface.
  30. 30. The hard floor surface cleaner of claim 29 including a pump configured to drive the output flow of primary cleaning liquid component.
  31. 31. The hard floor surface cleaner of claim 29, wherein the foamed cleaning liquid distributor includes distributing conduit having a first end coupled to the nozzle output, whereby the output flow of foamed cleaning liquid discharged through the nozzle output is received by the distributing conduit.
  32. 32. The hard floor surface cleaner of claim 31, wherein the distributing conduit includes a section having a plurality of apertures.
  33. 33. The hard floor surface cleaner of claim 29, wherein the foamed cleaning liquid distributor includes the nozzle, wherein the nozzle is configured to direct the output flow of foamed cleaning liquid to a hard floor surface on which the mobile body travels.
  34. 34. The hard floor surface cleaner of claim 29, wherein the foamed cleaning liquid distributor includes a wand member through which the output flow of foamed cleaning liquid is discharged.
  35. 35. The hard floor surface cleaner of claim 34, wherein the wand member includes the nozzle and a section of tubing connecting the nozzle input to the output of the flow control device.
  36. 36. The hard floor surface cleaner of claim 29 including a motorized scrubber configured for rotating engagement with a hard floor surface over which the mobile body travels, wherein the foamed cleaning liquid distributor is configured to direct the output flow of foamed cleaning liquid onto or through a scrubbing member of the motorized scrubber.
  37. 37. The hard floor surface cleaner of claim 29 including a motorized scrubber configured for rotating engagement with a hard floor surface over which the mobile body travels, wherein the foamed cleaning liquid distributor is configured to direct the output flow of foamed cleaning liquid within a central region of the motorized scrubber.
  38. 38. The hard floor surface cleaner of claim 29 including a motorized scrubber configured for rotating engagement with a hard floor surface over which the mobile body travels.
  39. 39. The hard floor surface cleaner of claim 38, wherein the scrubber includes a plurality of discs mounted to a rotatable shaft, the discs concentrically aligned with an axis of rotation of the shaft and positioned to engage the hard floor surface.
  40. 40. The hard floor surface cleaner of claim 39, wherein the discs are formed of a material comprising approximately 70% polyester and 30% polyamide.
  41. 41. The hard floor surface cleaner of claim 39 including a debris collector behind the motorized scrubber and configured to collect debris that is swept from the hard floor surface by the rotating engagement of the motorized scrubber with the hard floor surface.
  42. 42. The hard floor surface cleaner of claim 39, wherein the foamed cleaning liquid distributor is configured to direct the output flow of foamed cleaning liquid onto or through a scrubbing member of the motorized scrubber.
  43. 43. The hard floor surface cleaner of claim 39, wherein the foamed cleaning liquid distributor is configured to direct the output flow of foamed cleaning liquid to a leading side of the motorized scrubber.
  44. 44. The hard floor surface cleaner of claim 29 including a non-motorized wetting component having a plurality of liquid dispersing members each having a first end connected adjacent to a bottom side of the mobile body and a second end positioned to engage a hard floor surface over which the mobile body travels.
  45. 45. The hard floor surface cleaner of claim 44, wherein the foamed cleaning liquid distributor discharges the output flow of foam cleaning liquid to a leading side of the wetting component.
  46. 46. The hard floor surface cleaner of claim 29, wherein the hard floor surface cleaner does not include a motorized scrubbing member that is configured for rotating engagement with the hard floor surface.
  47. 47. The hard floor surface cleaner of claim 46 including a fluid recovery system configured to remove cleaning liquid from the hard floor surface.
  48. 48. The hard floor surface cleaner of claim 47, wherein the fluid recovery system includes a squeegee and a vacuum.
  49. 49. The hard floor surface cleaner of claim 29, wherein the output flow of foamed cleaning liquid is approximately 0.5 gallons per minute or less.
  50. 50. The hard floor surface cleaner of claim 29, wherein the output flow of cleaning agent is less than 10.0 cubic centimeters per minute.
  51. 51. The hard floor surface cleaner of claim 29 including a fluid recovery system configured to remove foamed cleaning liquid from a hard floor surface.
  52. 52. The hard floor surface cleaner of claim 29, wherein the flow control device includes an injector component through which the flow of cleaning agent is discharged into the output flow of the primary cleaning liquid component.
  53. 53. The hard floor surface cleaner of claim 52, wherein a flow rate of the flow of cleaning agent discharged through the injector component is adjustable.
  54. 54. The hard floor surface cleaner of claim 29 including a valve between the output of the flow control device and the nozzle input, the valve configured to terminate the output flow of cleaning liquid.
  55. 55. The system of claim 29 including a supply of a second cleaning agent.
  56. 56. The system of claim 55 including a second flow control device configured to receive a flow of the second cleaning agent and the flow of primary cleaning liquid component, combine the flows of the second cleaning agent and the primary cleaning liquid component, and produce a second output flow of cleaning liquid at an output.
  57. 57. The system of claim 55, including a valve configured to selectively direct a flow of the first cleaning agent or a flow of the second cleaning agent through the flow control device.
  58. 58. The system of claim 55, wherein the supply of a second cleaning agent is contained in a collapsible bag of a second cleaner cartridge.
  59. 59. A foamed cleaning liquid dispenser kit for installation in a hard floor surface cleaner that includes a primary cleaning liquid component dispenser configured to provide an output flow of a primary cleaning liquid component, the kit comprising:
    a supply of cleaning agent;
    a flow control device couplable to the output flow of primary cleaning liquid component and configured to receive a flow of cleaning agent from the supply, combine the flows of the cleaning agent and primary cleaning liquid component, and produce an output flow of cleaning liquid at an output;
    an aerator including a nozzle having an inlet fluidically coupled to the output of the flow control device, an outlet, a nozzle body having a bore extending between the inlet and the outlet, and at least one radial port extending through a side of the nozzle body to the bore; and
    packaging containing the conduit, the flow control device and the aerator.
  60. 60. The kit of claim 59 including a cleaner cartridge having a collapsible bag containing the supply of cleaning agent, wherein the packaging contains the cleaner cartridge.
  61. 61. The kit of claim 59 including conduit contained in the packaging.
US10653347 2001-07-30 2003-09-02 Foamed cleaning liquid dispensing system Abandoned US20040040102A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US30877301 true 2001-07-30 2001-07-30
US10026411 US6585827B2 (en) 2001-07-30 2001-12-21 Apparatus and method of use for cleaning a hard floor surface utilizing an aerated cleaning liquid
US10143582 US6735811B2 (en) 2001-07-30 2002-05-09 Cleaning liquid dispensing system for a hard floor surface cleaner
US10152549 US7051399B2 (en) 2001-07-30 2002-05-21 Cleaner cartridge
US10152537 US6671925B2 (en) 2001-07-30 2002-05-21 Chemical dispenser for a hard floor surface cleaner
US10213849 US6662600B1 (en) 2002-08-07 2002-08-07 Foamed cleaning liquid dispensing system
US10328516 US6705332B2 (en) 2001-07-30 2002-12-23 Hard floor surface cleaner utilizing an aerated cleaning liquid
US10653347 US20040040102A1 (en) 2001-07-30 2003-09-02 Foamed cleaning liquid dispensing system

Applications Claiming Priority (13)

Application Number Priority Date Filing Date Title
US10653347 US20040040102A1 (en) 2001-07-30 2003-09-02 Foamed cleaning liquid dispensing system
US10749129 US20040221407A1 (en) 2001-07-30 2003-12-30 Cleaning liquid dispensing system
PCT/US2004/027764 WO2005020780B1 (en) 2003-09-02 2004-08-26 Foamed cleaning liquid dispensing system
JP2006525366A JP2007503915A (en) 2003-09-02 2004-08-26 Cleaning fluid distribution system of the foamed
EP20040782277 EP1662962A1 (en) 2003-09-02 2004-08-26 Foamed cleaning liquid dispensing system
EP20040783002 EP1659914A1 (en) 2003-09-02 2004-09-02 Cleaning liquid dispensing system
JP2006524959T JP2007503887A (en) 2003-09-02 2004-09-02 Cleaning fluid distribution system of
PCT/US2004/028616 WO2005020778A1 (en) 2003-09-02 2004-09-02 Cleaning liquid dispensing system
US11125764 US20050217062A1 (en) 2001-07-30 2005-05-10 Air purging of a liquid dispensing system of a surface cleaner
US11211987 US7172658B2 (en) 2001-07-30 2005-08-25 Cleaning liquid dispensing in a mobile hard surface cleaner
US11331845 US8051861B2 (en) 2001-07-30 2006-01-13 Cleaning system utilizing purified water
US11371111 US8028365B2 (en) 2003-09-02 2006-03-08 Hard and soft floor cleaning tool and machine
US11637234 US20070180645A1 (en) 2001-07-30 2006-12-11 Cleaning liquid dispensing in a mobile hard surface cleaner

Related Parent Applications (5)

Application Number Title Priority Date Filing Date
US10143582 Continuation-In-Part US6735811B2 (en) 2001-07-30 2002-05-09 Cleaning liquid dispensing system for a hard floor surface cleaner
US10152549 Continuation-In-Part US7051399B2 (en) 2001-07-30 2002-05-21 Cleaner cartridge
US10152537 Continuation-In-Part US6671925B2 (en) 2001-07-30 2002-05-21 Chemical dispenser for a hard floor surface cleaner
US10213849 Continuation-In-Part US6662600B1 (en) 2002-08-07 2002-08-07 Foamed cleaning liquid dispensing system
US10328516 Continuation-In-Part US6705332B2 (en) 2001-07-30 2002-12-23 Hard floor surface cleaner utilizing an aerated cleaning liquid

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10749129 Continuation-In-Part US20040221407A1 (en) 2001-07-30 2003-12-30 Cleaning liquid dispensing system

Publications (1)

Publication Number Publication Date
US20040040102A1 true true US20040040102A1 (en) 2004-03-04

Family

ID=34273420

Family Applications (1)

Application Number Title Priority Date Filing Date
US10653347 Abandoned US20040040102A1 (en) 2001-07-30 2003-09-02 Foamed cleaning liquid dispensing system

Country Status (4)

Country Link
US (1) US20040040102A1 (en)
EP (1) EP1662962A1 (en)
JP (1) JP2007503915A (en)
WO (1) WO2005020780B1 (en)

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030019071A1 (en) * 2001-07-30 2003-01-30 Field Bruce F Cleaner cartridge
US20040221407A1 (en) * 2001-07-30 2004-11-11 Tennant Company Cleaning liquid dispensing system
US20040226584A1 (en) * 2003-05-14 2004-11-18 Michael Guest Multifunctional surface cleaning machine and method of using the same
US20040226578A1 (en) * 2003-05-14 2004-11-18 Michael Guest Priming pump for multi-functional cleaning machine
US20050022844A1 (en) * 2003-07-30 2005-02-03 Tennant Company Ultraviolet sanitation device
US20050132527A1 (en) * 2003-05-14 2005-06-23 Roger Pedlar Apparatus for floor cleaning and treatment
US20060032519A1 (en) * 2001-07-30 2006-02-16 Tennant Company Cleaning liquid dispensing in a mobile hard surface cleaner
US20060064844A1 (en) * 2003-05-14 2006-03-30 Venard Daniel C Floating deck for use with a floor cleaning apparatus
US20060137127A1 (en) * 2001-07-30 2006-06-29 Field Bruce F Cleaning system utilizing purified water
US20060150352A1 (en) * 2003-09-02 2006-07-13 Tennant Company Hard and soft floor cleaning tool and machine
WO2006076049A1 (en) * 2005-01-11 2006-07-20 Alto U.S. Inc. Orbital scrubber
US20060236494A1 (en) * 2005-04-07 2006-10-26 Tennant Company Hard and soft floor surface cleaner
US20060282965A1 (en) * 2005-05-05 2006-12-21 Tennant Company Cleaning head for use in a floor cleaning machine
US20070089251A1 (en) * 2005-10-21 2007-04-26 Tennant Company Floor cleaner scrub head having a movable disc scrub member
US20080078041A1 (en) * 2005-01-11 2008-04-03 Alto U.S. Inc. Orbital scrubber with stabilizer element
US20080271279A1 (en) * 2007-05-04 2008-11-06 Ecolab Inc. Mobile foam producing unit
US20110023248A1 (en) * 2009-07-29 2011-02-03 Karcher North America, Inc. Selectively Adjustable Steering Mechanism for Use on a Floor Cleaning Machine
USD654234S1 (en) 2010-12-08 2012-02-14 Karcher North America, Inc. Vacuum bag
WO2012054506A2 (en) * 2010-10-19 2012-04-26 Diversey, Inc. Carpet cleaning system and method
USD693529S1 (en) 2012-09-10 2013-11-12 Karcher North America, Inc. Floor cleaning device
US8595892B1 (en) * 2010-08-02 2013-12-03 Wilson E. Everette, Jr. Ultrasonic floor cleaner and scrubber
US8887340B2 (en) 2003-05-14 2014-11-18 Kärcher North America, Inc. Floor cleaning apparatus
US8978190B2 (en) 2011-06-28 2015-03-17 Karcher North America, Inc. Removable pad for interconnection to a high-speed driver system
USD762992S1 (en) 2014-10-20 2016-08-09 The Kirby Company / Scott Fetzer Company Textile with pattern
USD780390S1 (en) 2014-10-20 2017-02-28 The Kirby Company/Scott Fetzer Company Handle for a surface-treatment apparatus
USD789632S1 (en) 2014-10-20 2017-06-13 The Kirby Company/Scott Fetzer Company Surface-treatment apparatus
US9713411B2 (en) 2014-10-20 2017-07-25 The Kirby Company / Scott Fetzer Company Surface-treatment apparatus and head unit
DK201600692A1 (en) * 2016-11-08 2018-05-22 Nilfisk Food As Mixing unit and injector for foam production
DK201600690A1 (en) * 2016-11-08 2018-05-22 Nilfisk Food As Mixing unit with replaceable injector
DK201600689A1 (en) * 2016-11-08 2018-05-22 Nilfisk Food As Compact cleaning device
DK201600694A1 (en) * 2016-11-08 2018-05-28 Nilfisk Food As Injector rinsing function

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8025786B2 (en) 2006-02-10 2011-09-27 Tennant Company Method of generating sparged, electrochemically activated liquid
EP1991370B1 (en) * 2006-02-10 2012-10-24 Tennant Company Method and apparatus for generating sparged, electrochemically activated liquid
US8016996B2 (en) 2006-02-10 2011-09-13 Tennant Company Method of producing a sparged cleaning liquid onboard a mobile surface cleaner
US8046867B2 (en) 2006-02-10 2011-11-01 Tennant Company Mobile surface cleaner having a sparging device
US8156608B2 (en) 2006-02-10 2012-04-17 Tennant Company Cleaning apparatus having a functional generator for producing electrochemically activated cleaning liquid
US8007654B2 (en) 2006-02-10 2011-08-30 Tennant Company Electrochemically activated anolyte and catholyte liquid
US8012340B2 (en) 2006-02-10 2011-09-06 Tennant Company Method for generating electrochemically activated cleaning liquid
US8025787B2 (en) 2006-02-10 2011-09-27 Tennant Company Method and apparatus for generating, applying and neutralizing an electrochemically activated liquid
EP2207631A2 (en) 2007-10-04 2010-07-21 Tennant Company Method and apparatus for neutralizing electrochemically activated liquids
WO2009149327A4 (en) 2008-06-05 2010-05-27 Global Opportunities Investment Group, Llc Fuel combustion method and system
KR20110053948A (en) 2008-06-19 2011-05-24 텐난트 컴파니 Tubular electrolysis cell comprising concentric electrodes and corresponding method
JP2011527380A (en) 2008-06-19 2011-10-27 テナント カンパニー Hand-held spray bottle electrolytic cell and a DC-DC converter

Citations (99)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6167587A (en) *
US2731659A (en) * 1952-12-08 1956-01-24 Coplen George Floor scrubbing machine
US3037887A (en) * 1959-05-04 1962-06-05 Dow Chemical Co Foam cleaning of surfaces
US3078190A (en) * 1958-12-12 1963-02-19 Henkel & Cie Gmbh Process for foam-cleaning metal surfaces
US3231134A (en) * 1961-09-01 1966-01-25 Lorant Joseph John Spraying liquids
US3436262A (en) * 1964-09-25 1969-04-01 Dow Chemical Co Cleaning by foam contact,and foam regeneration method
US3490948A (en) * 1966-11-17 1970-01-20 Grace W R & Co Method of applying noxious cleaning chemicals
US3655096A (en) * 1969-10-22 1972-04-11 Pillsbury Co Container for diluting and dispensing material
US3789449A (en) * 1972-06-21 1974-02-05 Scott & Fetzer Co Hard surface floor cleaner
US3862467A (en) * 1972-03-02 1975-01-28 Eli G Krickovich Roadway vacuum sweeper with slurry disposal
US3931662A (en) * 1971-05-28 1976-01-13 Nayfa James E Floor cleaning machine with vacuum pickup
US3938212A (en) * 1972-05-22 1976-02-17 Tennant Company Scrubbing machine
US3940826A (en) * 1973-10-12 1976-03-02 Clarke-Gravely Corporation Portable surface cleaner
US3942218A (en) * 1972-05-22 1976-03-09 Tennant Company Scrubbing machine
US4014808A (en) * 1973-06-04 1977-03-29 Tennant Company Detergent composition
US4032307A (en) * 1975-11-28 1977-06-28 Tennant Company Method and apparatus for cleaning filter means
US4096084A (en) * 1973-06-04 1978-06-20 Tennant Company Surface cleaning method and machine
US4133733A (en) * 1977-06-17 1979-01-09 Envirotech Corporation Electrolytic titration apparatus
US4138756A (en) * 1977-10-03 1979-02-13 Tennant Company Surface maintenance machine drive and brush
US4191590A (en) * 1977-04-25 1980-03-04 The John J. Sundheim Family Estate Method and apparatus for cleaning carpets and surfaces using cleaning fluid
US4194263A (en) * 1978-06-19 1980-03-25 Tennant Company Scrubbing machine with water regeneration
US4206530A (en) * 1978-01-30 1980-06-10 Tennant Company Surface maintenance machine having air recirculation
US4258451A (en) * 1979-07-23 1981-03-31 Tennant Company Surface sweeping machine
US4262382A (en) * 1979-08-20 1981-04-21 Tennant Company Multi-speed brush control
US4310944A (en) * 1978-01-30 1982-01-19 Tennant Company Surface maintenance machine having air recirculation
US4320556A (en) * 1980-09-12 1982-03-23 Tennant Company Surface maintenance equipment
US4334335A (en) * 1980-09-03 1982-06-15 Tennant Company Scrubber with hydraulic squeegee lift
US4369544A (en) * 1980-01-14 1983-01-25 Novum In Elettrodomestica Srl Machine to wash surfaces
US4373227A (en) * 1980-09-09 1983-02-15 Tennant Company Surface maintenance equipment
US4377017A (en) * 1978-06-19 1983-03-22 Tennant Company Scrubbing machine with water regeneration
US4378855A (en) * 1979-08-20 1983-04-05 Tennant Company Multi-speed drive with forward/reverse lockout
US4429432A (en) * 1981-05-26 1984-02-07 Servicemaster Industries, Inc. Sanitizer attachment for a mobile floor cleaner
US4511486A (en) * 1981-11-02 1985-04-16 Richardson-Vicks Inc. Method of cleaning dentures using aerated foams
US4570856A (en) * 1984-03-02 1986-02-18 Regina Corporation Liquid and detergent mixing chamber and valves
US4571771A (en) * 1984-08-27 1986-02-25 Tennant Company Sweeper with fire control
US4580313A (en) * 1983-09-12 1986-04-08 Tennant Company Walk behind floor maintenance machine
US4586208A (en) * 1984-12-17 1986-05-06 Tennant Company Floor maintenance machine and method
US4595420A (en) * 1984-10-29 1986-06-17 Williams Iii Robert C Method and apparatus for cleaning and maintaining carpet
US4634403A (en) * 1985-11-18 1987-01-06 Tennant Company Belt drive
US4667364A (en) * 1984-08-28 1987-05-26 Internationale Octrooi Maatschappij "Octropa" B.V. Floor-cleaning machine
US4675935A (en) * 1986-03-14 1987-06-30 Tennant Company Control and monitor for a floor maintenance device
US4676364A (en) * 1985-01-17 1987-06-30 Weimar N.V. Conveying device
US4676926A (en) * 1984-07-11 1987-06-30 Laboratorium Prof. Dr. Rudolf Berthold Method of regulating the quality of a foam when it exits from a foam conveyor line
US4676287A (en) * 1984-03-02 1987-06-30 The Regina Company Inc. Cartridge and docking port for a cleaning device
US4729141A (en) * 1987-01-07 1988-03-08 Tennant Company Disc brush suspension for a floor maintenance machine
US4805258A (en) * 1987-09-22 1989-02-21 Tennant Trend Inc. Battery powered walk behind floor burnisher
US4805256A (en) * 1987-10-02 1989-02-21 Tennant Company Scrubber squeegee pivoted concentric with brush drive
US4817233A (en) * 1988-04-22 1989-04-04 Tennant Company Scrubber squeegees for scrubbing forward and backward
US4819676A (en) * 1986-01-16 1989-04-11 Tennant Company Combination sweeping and scrubbing system and method
US4822431A (en) * 1985-01-03 1989-04-18 Tennant Company Machine and method for preparing a concrete surface for coating
US4838457A (en) * 1988-05-09 1989-06-13 Swahl James C Lotion blending and dispensing unit
US4903718A (en) * 1988-10-19 1990-02-27 Ipco Corporation Flexible ultrasonic cleaning bag
US4986378A (en) * 1989-03-06 1991-01-22 Tennant Company Machine configuration and method for steering a vehicle away from a wall
US4996468A (en) * 1987-09-28 1991-02-26 Tennant Company Automated guided vehicle
US5013333A (en) * 1990-04-13 1991-05-07 Tennant Company Unattended air cleaning system for surface maintenance machine
US5016310A (en) * 1989-08-21 1991-05-21 Tennant Company Floor scrubber having laterally variable scrub brush position
US5088149A (en) * 1990-08-06 1992-02-18 Tennant Company Vacuum powered scrub head
US5093955A (en) * 1990-08-29 1992-03-10 Tennant Company Combined sweeper and scrubber
US5207642A (en) * 1987-08-07 1993-05-04 Baxter International Inc. Closed multi-fluid delivery system and method
US5212848A (en) * 1992-03-13 1993-05-25 Tennant Company Squeegee blade
US5213120A (en) * 1992-04-24 1993-05-25 Dickson Michael A Method and apparatus for generating foam within a pipe
US5276933A (en) * 1992-07-02 1994-01-11 Tennant Company Damage resistant recirculation flap
US5295277A (en) * 1992-12-14 1994-03-22 Tennant Company Convertible sweeper
US5303448A (en) * 1992-07-08 1994-04-19 Tennant Company Hopper and filter chamber for direct forward throw sweeper
US5319828A (en) * 1992-11-04 1994-06-14 Tennant Company Low profile scrubber
US5383605A (en) * 1992-12-10 1995-01-24 Hydro-Chem Systems, Inc. Radio controlled spraying device
US5483718A (en) * 1994-10-03 1996-01-16 Tennant Company Floor scrubbing machine having impact energy absorption
US5509972A (en) * 1994-06-27 1996-04-23 Akazawa; Yasumasa Air-conditioner cleaning method
US5515568A (en) * 1994-10-03 1996-05-14 Tennant Company Scrubbing machine having offset cylindrical brushes
US5593091A (en) * 1994-11-07 1997-01-14 Harris Research, Inc. Dual solution application system
US5711775A (en) * 1996-04-15 1998-01-27 Tennant Company Sweeper with electromagnetic filter cleaning
US5735017A (en) * 1996-03-29 1998-04-07 Bissell Inc. Compact wet/dry vacuum cleaner with flexible bladder
US5871152A (en) * 1997-07-31 1999-02-16 Saney; Bahman B. Remote controlled carpet cleaner
US5884353A (en) * 1997-12-01 1999-03-23 Tennant Company Sweeper with hopper heat shield
US5893189A (en) * 1997-09-26 1999-04-13 Tennant Company Sweeping machine with hopper shelf
US5896617A (en) * 1995-11-06 1999-04-27 Bissell Inc. Water extraction cleaning machine with nesting tank assembly
US5901407A (en) * 1997-05-15 1999-05-11 Tennant Company Scrubbing machine with means for continuously cleaning a filter
US6018844A (en) * 1998-09-29 2000-02-01 Tennant Company Composite side skirt for powered sweeper
US6035479A (en) * 1998-05-12 2000-03-14 Tennant Company Sweeper with auxiliary brush and auxiliary lip
US6073295A (en) * 1998-08-25 2000-06-13 Tennant Company Sweeping machine with movable recirculation flap
US6167587B1 (en) * 1997-07-09 2001-01-02 Bissell Homecare, Inc. Upright extraction cleaning machine
US6192542B1 (en) * 1999-09-15 2001-02-27 Tennant Company Sweeper conveyor overflow and leakage recycling ramp
US6202243B1 (en) * 1999-05-26 2001-03-20 Tennant Company Surface cleaning machine with multiple control positions
US6209756B1 (en) * 1998-09-04 2001-04-03 Diversey Lever, Inc. Container and combination package comprising such container and a cover
US6249926B1 (en) * 1999-09-30 2001-06-26 Tennant Company Sequential actuation skirt and brush floor scrubber
US6389641B1 (en) * 1998-06-15 2002-05-21 Tennant Company Dual mode debris pickup machine
US6505379B2 (en) * 1998-03-16 2003-01-14 Kris D. Keller Heated vacuum carpet cleaning and drying apparatus
US6507968B1 (en) * 2000-09-07 2003-01-21 Tennant Company Side skirt for a surface treating apparatus
US20030029885A1 (en) * 2001-06-29 2003-02-13 Kawolics Raymond P. Bag-in-box container and faucet
US6523992B1 (en) * 1999-11-12 2003-02-25 Kettenbach Gmbh & Co. Kg Device for mixing two pasty substances, particularly for mixing a dental impression substance with catalyst substance
US6530102B1 (en) * 1999-10-20 2003-03-11 Tennant Company Scrubber head anti-vibration mounting
US6671925B2 (en) * 2001-07-30 2004-01-06 Tennant Company Chemical dispenser for a hard floor surface cleaner
US6705332B2 (en) * 2001-07-30 2004-03-16 Tennant Company Hard floor surface cleaner utilizing an aerated cleaning liquid
US6735812B2 (en) * 2002-02-22 2004-05-18 Tennant Company Dual mode carpet cleaning apparatus utilizing an extraction device and a soil transfer cleaning medium
US6735811B2 (en) * 2001-07-30 2004-05-18 Tennant Company Cleaning liquid dispensing system for a hard floor surface cleaner
US6836919B2 (en) * 2001-05-21 2005-01-04 Tennant Company Suspension device for floor maintenance appliance
US20050022844A1 (en) * 2003-07-30 2005-02-03 Tennant Company Ultraviolet sanitation device
US6877180B2 (en) * 2002-09-06 2005-04-12 Tennant Street sweeper main broom cutoff flap
US6880199B1 (en) * 2001-10-01 2005-04-19 Bissell Homecare, Inc. Extraction cleaning with collapsible tanks

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3392418A (en) * 1966-08-08 1968-07-16 Von Schrader Mfg Company Dry foam type carpet shampooing machine
US4133773A (en) * 1977-07-28 1979-01-09 The Dow Chemical Company Apparatus for making foamed cleaning solutions and method of operation
US4780243A (en) * 1986-05-19 1988-10-25 Halliburton Company Dry sand foam generator
CA2020451A1 (en) * 1990-07-04 1992-01-05 Donald A. Macdonald Foam type carpet cleaner
GB9116200D0 (en) * 1991-07-26 1991-09-11 Hoover Ltd Suction cleaner
DE4413783A1 (en) * 1993-09-01 1995-03-02 Henkel Ecolab Gmbh & Co Ohg Mobile floor cleaning device
JP3105778B2 (en) * 1995-10-23 2000-11-06 三郎 上野 Method of cleaning carpet cleaners and carpet
US6052854A (en) * 1998-12-16 2000-04-25 E. I. Du Pont De Nemours And Company Floor cleaning apparatus having a foam distributing device therein
US6276613B1 (en) * 1999-02-22 2001-08-21 Alto Us, Inc. Chemical foaming system for floor cleaning machine
DE10033339A1 (en) * 2000-07-08 2002-01-24 Henkel Ecolab Gmbh & Co Ohg Method and apparatus for cleaning and / or disinfecting hard surfaces with a foam

Patent Citations (100)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6167587A (en) *
US2731659A (en) * 1952-12-08 1956-01-24 Coplen George Floor scrubbing machine
US3078190A (en) * 1958-12-12 1963-02-19 Henkel & Cie Gmbh Process for foam-cleaning metal surfaces
US3037887A (en) * 1959-05-04 1962-06-05 Dow Chemical Co Foam cleaning of surfaces
US3231134A (en) * 1961-09-01 1966-01-25 Lorant Joseph John Spraying liquids
US3436262A (en) * 1964-09-25 1969-04-01 Dow Chemical Co Cleaning by foam contact,and foam regeneration method
US3490948A (en) * 1966-11-17 1970-01-20 Grace W R & Co Method of applying noxious cleaning chemicals
US3655096A (en) * 1969-10-22 1972-04-11 Pillsbury Co Container for diluting and dispensing material
US4000536A (en) * 1971-05-28 1977-01-04 Nayfa James E Floor cleaning machine with foam dispensing system
US3931662A (en) * 1971-05-28 1976-01-13 Nayfa James E Floor cleaning machine with vacuum pickup
US3862467A (en) * 1972-03-02 1975-01-28 Eli G Krickovich Roadway vacuum sweeper with slurry disposal
US3938212A (en) * 1972-05-22 1976-02-17 Tennant Company Scrubbing machine
US3942218A (en) * 1972-05-22 1976-03-09 Tennant Company Scrubbing machine
US3789449A (en) * 1972-06-21 1974-02-05 Scott & Fetzer Co Hard surface floor cleaner
US4096084A (en) * 1973-06-04 1978-06-20 Tennant Company Surface cleaning method and machine
US4014808A (en) * 1973-06-04 1977-03-29 Tennant Company Detergent composition
US3940826A (en) * 1973-10-12 1976-03-02 Clarke-Gravely Corporation Portable surface cleaner
US4032307A (en) * 1975-11-28 1977-06-28 Tennant Company Method and apparatus for cleaning filter means
US4191590A (en) * 1977-04-25 1980-03-04 The John J. Sundheim Family Estate Method and apparatus for cleaning carpets and surfaces using cleaning fluid
US4133733A (en) * 1977-06-17 1979-01-09 Envirotech Corporation Electrolytic titration apparatus
US4138756A (en) * 1977-10-03 1979-02-13 Tennant Company Surface maintenance machine drive and brush
US4310944A (en) * 1978-01-30 1982-01-19 Tennant Company Surface maintenance machine having air recirculation
US4206530A (en) * 1978-01-30 1980-06-10 Tennant Company Surface maintenance machine having air recirculation
US4377017A (en) * 1978-06-19 1983-03-22 Tennant Company Scrubbing machine with water regeneration
US4194263A (en) * 1978-06-19 1980-03-25 Tennant Company Scrubbing machine with water regeneration
US4258451A (en) * 1979-07-23 1981-03-31 Tennant Company Surface sweeping machine
US4262382A (en) * 1979-08-20 1981-04-21 Tennant Company Multi-speed brush control
US4378855A (en) * 1979-08-20 1983-04-05 Tennant Company Multi-speed drive with forward/reverse lockout
US4369544A (en) * 1980-01-14 1983-01-25 Novum In Elettrodomestica Srl Machine to wash surfaces
US4334335A (en) * 1980-09-03 1982-06-15 Tennant Company Scrubber with hydraulic squeegee lift
US4373227A (en) * 1980-09-09 1983-02-15 Tennant Company Surface maintenance equipment
US4320556A (en) * 1980-09-12 1982-03-23 Tennant Company Surface maintenance equipment
US4429432A (en) * 1981-05-26 1984-02-07 Servicemaster Industries, Inc. Sanitizer attachment for a mobile floor cleaner
US4511486A (en) * 1981-11-02 1985-04-16 Richardson-Vicks Inc. Method of cleaning dentures using aerated foams
US4580313A (en) * 1983-09-12 1986-04-08 Tennant Company Walk behind floor maintenance machine
US4570856A (en) * 1984-03-02 1986-02-18 Regina Corporation Liquid and detergent mixing chamber and valves
US4676287A (en) * 1984-03-02 1987-06-30 The Regina Company Inc. Cartridge and docking port for a cleaning device
US4676926A (en) * 1984-07-11 1987-06-30 Laboratorium Prof. Dr. Rudolf Berthold Method of regulating the quality of a foam when it exits from a foam conveyor line
US4571771A (en) * 1984-08-27 1986-02-25 Tennant Company Sweeper with fire control
US4667364A (en) * 1984-08-28 1987-05-26 Internationale Octrooi Maatschappij "Octropa" B.V. Floor-cleaning machine
US4595420A (en) * 1984-10-29 1986-06-17 Williams Iii Robert C Method and apparatus for cleaning and maintaining carpet
US4586208A (en) * 1984-12-17 1986-05-06 Tennant Company Floor maintenance machine and method
US4822431A (en) * 1985-01-03 1989-04-18 Tennant Company Machine and method for preparing a concrete surface for coating
US4676364A (en) * 1985-01-17 1987-06-30 Weimar N.V. Conveying device
US4634403A (en) * 1985-11-18 1987-01-06 Tennant Company Belt drive
US4819676A (en) * 1986-01-16 1989-04-11 Tennant Company Combination sweeping and scrubbing system and method
US4675935A (en) * 1986-03-14 1987-06-30 Tennant Company Control and monitor for a floor maintenance device
US4729141A (en) * 1987-01-07 1988-03-08 Tennant Company Disc brush suspension for a floor maintenance machine
US5207642A (en) * 1987-08-07 1993-05-04 Baxter International Inc. Closed multi-fluid delivery system and method
US4805258A (en) * 1987-09-22 1989-02-21 Tennant Trend Inc. Battery powered walk behind floor burnisher
US4996468A (en) * 1987-09-28 1991-02-26 Tennant Company Automated guided vehicle
US4805256A (en) * 1987-10-02 1989-02-21 Tennant Company Scrubber squeegee pivoted concentric with brush drive
US4817233A (en) * 1988-04-22 1989-04-04 Tennant Company Scrubber squeegees for scrubbing forward and backward
US4838457A (en) * 1988-05-09 1989-06-13 Swahl James C Lotion blending and dispensing unit
US4903718A (en) * 1988-10-19 1990-02-27 Ipco Corporation Flexible ultrasonic cleaning bag
US4986378A (en) * 1989-03-06 1991-01-22 Tennant Company Machine configuration and method for steering a vehicle away from a wall
US5016310A (en) * 1989-08-21 1991-05-21 Tennant Company Floor scrubber having laterally variable scrub brush position
US5013333A (en) * 1990-04-13 1991-05-07 Tennant Company Unattended air cleaning system for surface maintenance machine
US5088149A (en) * 1990-08-06 1992-02-18 Tennant Company Vacuum powered scrub head
US5093955A (en) * 1990-08-29 1992-03-10 Tennant Company Combined sweeper and scrubber
US5212848A (en) * 1992-03-13 1993-05-25 Tennant Company Squeegee blade
US5213120A (en) * 1992-04-24 1993-05-25 Dickson Michael A Method and apparatus for generating foam within a pipe
US5276933A (en) * 1992-07-02 1994-01-11 Tennant Company Damage resistant recirculation flap
US5303448A (en) * 1992-07-08 1994-04-19 Tennant Company Hopper and filter chamber for direct forward throw sweeper
US5319828A (en) * 1992-11-04 1994-06-14 Tennant Company Low profile scrubber
US5383605A (en) * 1992-12-10 1995-01-24 Hydro-Chem Systems, Inc. Radio controlled spraying device
US5295277A (en) * 1992-12-14 1994-03-22 Tennant Company Convertible sweeper
US5509972A (en) * 1994-06-27 1996-04-23 Akazawa; Yasumasa Air-conditioner cleaning method
US5483718A (en) * 1994-10-03 1996-01-16 Tennant Company Floor scrubbing machine having impact energy absorption
US5515568A (en) * 1994-10-03 1996-05-14 Tennant Company Scrubbing machine having offset cylindrical brushes
US5593091A (en) * 1994-11-07 1997-01-14 Harris Research, Inc. Dual solution application system
US5896617A (en) * 1995-11-06 1999-04-27 Bissell Inc. Water extraction cleaning machine with nesting tank assembly
US5735017A (en) * 1996-03-29 1998-04-07 Bissell Inc. Compact wet/dry vacuum cleaner with flexible bladder
US5711775A (en) * 1996-04-15 1998-01-27 Tennant Company Sweeper with electromagnetic filter cleaning
US5901407A (en) * 1997-05-15 1999-05-11 Tennant Company Scrubbing machine with means for continuously cleaning a filter
US6167587B1 (en) * 1997-07-09 2001-01-02 Bissell Homecare, Inc. Upright extraction cleaning machine
US5871152A (en) * 1997-07-31 1999-02-16 Saney; Bahman B. Remote controlled carpet cleaner
US5893189A (en) * 1997-09-26 1999-04-13 Tennant Company Sweeping machine with hopper shelf
US5884353A (en) * 1997-12-01 1999-03-23 Tennant Company Sweeper with hopper heat shield
US6505379B2 (en) * 1998-03-16 2003-01-14 Kris D. Keller Heated vacuum carpet cleaning and drying apparatus
US6035479A (en) * 1998-05-12 2000-03-14 Tennant Company Sweeper with auxiliary brush and auxiliary lip
US6389641B1 (en) * 1998-06-15 2002-05-21 Tennant Company Dual mode debris pickup machine
US6073295A (en) * 1998-08-25 2000-06-13 Tennant Company Sweeping machine with movable recirculation flap
US6209756B1 (en) * 1998-09-04 2001-04-03 Diversey Lever, Inc. Container and combination package comprising such container and a cover
US6018844A (en) * 1998-09-29 2000-02-01 Tennant Company Composite side skirt for powered sweeper
US6202243B1 (en) * 1999-05-26 2001-03-20 Tennant Company Surface cleaning machine with multiple control positions
US6192542B1 (en) * 1999-09-15 2001-02-27 Tennant Company Sweeper conveyor overflow and leakage recycling ramp
US6249926B1 (en) * 1999-09-30 2001-06-26 Tennant Company Sequential actuation skirt and brush floor scrubber
US6530102B1 (en) * 1999-10-20 2003-03-11 Tennant Company Scrubber head anti-vibration mounting
US6523992B1 (en) * 1999-11-12 2003-02-25 Kettenbach Gmbh & Co. Kg Device for mixing two pasty substances, particularly for mixing a dental impression substance with catalyst substance
US6507968B1 (en) * 2000-09-07 2003-01-21 Tennant Company Side skirt for a surface treating apparatus
US6836919B2 (en) * 2001-05-21 2005-01-04 Tennant Company Suspension device for floor maintenance appliance
US20030029885A1 (en) * 2001-06-29 2003-02-13 Kawolics Raymond P. Bag-in-box container and faucet
US6735811B2 (en) * 2001-07-30 2004-05-18 Tennant Company Cleaning liquid dispensing system for a hard floor surface cleaner
US6671925B2 (en) * 2001-07-30 2004-01-06 Tennant Company Chemical dispenser for a hard floor surface cleaner
US6705332B2 (en) * 2001-07-30 2004-03-16 Tennant Company Hard floor surface cleaner utilizing an aerated cleaning liquid
US6880199B1 (en) * 2001-10-01 2005-04-19 Bissell Homecare, Inc. Extraction cleaning with collapsible tanks
US6735812B2 (en) * 2002-02-22 2004-05-18 Tennant Company Dual mode carpet cleaning apparatus utilizing an extraction device and a soil transfer cleaning medium
US6877180B2 (en) * 2002-09-06 2005-04-12 Tennant Street sweeper main broom cutoff flap
US20050022844A1 (en) * 2003-07-30 2005-02-03 Tennant Company Ultraviolet sanitation device

Cited By (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060032519A1 (en) * 2001-07-30 2006-02-16 Tennant Company Cleaning liquid dispensing in a mobile hard surface cleaner
US20040221407A1 (en) * 2001-07-30 2004-11-11 Tennant Company Cleaning liquid dispensing system
US20060137127A1 (en) * 2001-07-30 2006-06-29 Field Bruce F Cleaning system utilizing purified water
US20030019071A1 (en) * 2001-07-30 2003-01-30 Field Bruce F Cleaner cartridge
US8051861B2 (en) 2001-07-30 2011-11-08 Tennant Company Cleaning system utilizing purified water
US7533435B2 (en) 2003-05-14 2009-05-19 Karcher North America, Inc. Floor treatment apparatus
US20050132527A1 (en) * 2003-05-14 2005-06-23 Roger Pedlar Apparatus for floor cleaning and treatment
US20040226578A1 (en) * 2003-05-14 2004-11-18 Michael Guest Priming pump for multi-functional cleaning machine
US20060064844A1 (en) * 2003-05-14 2006-03-30 Venard Daniel C Floating deck for use with a floor cleaning apparatus
US20060124770A1 (en) * 2003-05-14 2006-06-15 Castle Rock Industries, Inc. Spray nozzle and mixing block
US20040226584A1 (en) * 2003-05-14 2004-11-18 Michael Guest Multifunctional surface cleaning machine and method of using the same
US9730566B2 (en) 2003-05-14 2017-08-15 Kärcher North America, Inc. Floor treatment apparatus
US9451861B2 (en) 2003-05-14 2016-09-27 Kärcher North America, Inc. Floor treatment apparatus
US20060156498A1 (en) * 2003-05-14 2006-07-20 Castle Rock Industries, Inc. Floor cleaning and treatment apparatus
US9015887B1 (en) 2003-05-14 2015-04-28 Kärcher North America, Inc. Floor treatment apparatus
US9192276B2 (en) 2003-05-14 2015-11-24 Karcher North America, Inc. Floor cleaning apparatus
US8438685B2 (en) 2003-05-14 2013-05-14 Karcher North America, Inc. Floor treatment apparatus
US8528142B1 (en) 2003-05-14 2013-09-10 Karcher North America, Inc. Floor treatment apparatus
US7406739B2 (en) 2003-05-14 2008-08-05 Karcher Floor Care, Inc Grout tool for use with an all surface cleaning apparatus
US9510721B2 (en) 2003-05-14 2016-12-06 Karcher North America, Inc. Floor cleaning apparatus
US8887340B2 (en) 2003-05-14 2014-11-18 Kärcher North America, Inc. Floor cleaning apparatus
US8245345B2 (en) 2003-05-14 2012-08-21 Karcher North America, Inc. Floor treatment apparatus
US9757005B2 (en) 2003-05-14 2017-09-12 Kärcher North America, Inc. Floor treatment apparatus
US20060037171A1 (en) * 2003-05-14 2006-02-23 Michael Guest Grout tool for use with an all surface cleaning apparatus
US20050022844A1 (en) * 2003-07-30 2005-02-03 Tennant Company Ultraviolet sanitation device
US8029739B2 (en) 2003-07-30 2011-10-04 Tennant Company Ultraviolet sanitation device
US20060150352A1 (en) * 2003-09-02 2006-07-13 Tennant Company Hard and soft floor cleaning tool and machine
US8028365B2 (en) 2003-09-02 2011-10-04 Tennant Company Hard and soft floor cleaning tool and machine
WO2006076049A1 (en) * 2005-01-11 2006-07-20 Alto U.S. Inc. Orbital scrubber
US20080078041A1 (en) * 2005-01-11 2008-04-03 Alto U.S. Inc. Orbital scrubber with stabilizer element
US8234749B2 (en) 2005-01-11 2012-08-07 Nilfisk-Advance, Inc. Orbital scrubber with stabilizer element
US20080271757A1 (en) * 2005-01-11 2008-11-06 Alto U.S. Inc. Orbital scrubber
US20060236494A1 (en) * 2005-04-07 2006-10-26 Tennant Company Hard and soft floor surface cleaner
US7665174B2 (en) 2005-05-05 2010-02-23 Tennant Company Cleaning head for use in a floor cleaning machine
US20060282965A1 (en) * 2005-05-05 2006-12-21 Tennant Company Cleaning head for use in a floor cleaning machine
US20070089251A1 (en) * 2005-10-21 2007-04-26 Tennant Company Floor cleaner scrub head having a movable disc scrub member
US8584294B2 (en) 2005-10-21 2013-11-19 Tennant Company Floor cleaner scrub head having a movable disc scrub member
US7516907B2 (en) 2007-05-04 2009-04-14 Ecolab Inc. Mobile foam producing unit
US20080271279A1 (en) * 2007-05-04 2008-11-06 Ecolab Inc. Mobile foam producing unit
US7959091B2 (en) 2007-05-04 2011-06-14 Ecolab Usa Inc. Mobile foam producing unit
US20090194178A1 (en) * 2007-05-04 2009-08-06 Ecolab Inc. Mobile Foam Producing Unit
US8302240B2 (en) 2009-07-29 2012-11-06 Karcher North America, Inc. Selectively adjustable steering mechanism for use on a floor cleaning machine
US20110023248A1 (en) * 2009-07-29 2011-02-03 Karcher North America, Inc. Selectively Adjustable Steering Mechanism for Use on a Floor Cleaning Machine
US8595892B1 (en) * 2010-08-02 2013-12-03 Wilson E. Everette, Jr. Ultrasonic floor cleaner and scrubber
WO2012054506A2 (en) * 2010-10-19 2012-04-26 Diversey, Inc. Carpet cleaning system and method
WO2012054506A3 (en) * 2010-10-19 2012-07-19 Diversey, Inc. Carpet cleaning system and method
USD654234S1 (en) 2010-12-08 2012-02-14 Karcher North America, Inc. Vacuum bag
US8978190B2 (en) 2011-06-28 2015-03-17 Karcher North America, Inc. Removable pad for interconnection to a high-speed driver system
USD693529S1 (en) 2012-09-10 2013-11-12 Karcher North America, Inc. Floor cleaning device
USD762992S1 (en) 2014-10-20 2016-08-09 The Kirby Company / Scott Fetzer Company Textile with pattern
USD780390S1 (en) 2014-10-20 2017-02-28 The Kirby Company/Scott Fetzer Company Handle for a surface-treatment apparatus
USD789632S1 (en) 2014-10-20 2017-06-13 The Kirby Company/Scott Fetzer Company Surface-treatment apparatus
US9713411B2 (en) 2014-10-20 2017-07-25 The Kirby Company / Scott Fetzer Company Surface-treatment apparatus and head unit
DK179414B1 (en) * 2016-11-08 2018-06-06 Nilfisk Food As Injector rinsing function
DK201600690A1 (en) * 2016-11-08 2018-05-22 Nilfisk Food As Mixing unit with replaceable injector
DK201600689A1 (en) * 2016-11-08 2018-05-22 Nilfisk Food As Compact cleaning device
DK201600694A1 (en) * 2016-11-08 2018-05-28 Nilfisk Food As Injector rinsing function
DK179378B1 (en) * 2016-11-08 2018-05-28 Nilfisk Food As Mixing unit with replaceable injector
DK179376B1 (en) * 2016-11-08 2018-05-28 Nilfisk Food As Compact cleaning device
DK179382B1 (en) * 2016-11-08 2018-05-28 Nilfisk Food As Mixing unit and injector for foam production
DK201600692A1 (en) * 2016-11-08 2018-05-22 Nilfisk Food As Mixing unit and injector for foam production

Also Published As

Publication number Publication date Type
WO2005020780A1 (en) 2005-03-10 application
WO2005020780B1 (en) 2005-04-21 application
JP2007503915A (en) 2007-03-01 application
EP1662962A1 (en) 2006-06-07 application

Similar Documents

Publication Publication Date Title
US3197798A (en) Scrubbing machine
US3540072A (en) Floor conditioner
US4194263A (en) Scrubbing machine with water regeneration
US5259557A (en) Solution proportioner and dispensing system
US5287581A (en) Cleaning device having at least one rotating cylindrical sponge
US5678593A (en) Detergent mixing apparatus
US4377017A (en) Scrubbing machine with water regeneration
US4216563A (en) Combined dry and wet carpet cleaner
US3316579A (en) Apparatus for selectively polishing, scrubbing and cleaning floors
US6658692B2 (en) Small area deep cleaner
US7533435B2 (en) Floor treatment apparatus
US5535476A (en) Mobile automatic floor cleaner
US6595437B1 (en) Packaged product
US6662600B1 (en) Foamed cleaning liquid dispensing system
US5168599A (en) Wet and/or dry vacuum cleaning unit
US5088149A (en) Vacuum powered scrub head
US5439020A (en) Detergent mixing apparatus and method
US4827562A (en) Liquid extraction surface cleaning apparatus
US5815881A (en) Universal vacuum cleaner
US5392490A (en) Extraction cleaner and drier
US2531370A (en) Liquid discharging and collecting apparatus for cleaning
US4019218A (en) Carpet soil extractor
US3207444A (en) Water spray attachment having air control and liquid additive passages connected to a mixing chamber
US7021571B1 (en) Spray device with flat fan nozzle
US20010000576A1 (en) Multi-functional cleaning machine

Legal Events

Date Code Title Description
AS Assignment

Owner name: TENNANT COMPANY, MINNESOTA

Free format text: CORRECTIVE COVERSHEET TO CORRECT THE NAME OF THE ASSIGNEE AND SERIAL NUMBER 10/653,347 THAT WAS PREVIOUSLY RECORDED ON REEL 014464, FRAME 0891.;ASSIGNORS:FIELD, BRUCE F.;CHRISTENSEN, BRYAN L.;BLANCHARD, ERIC A.;REEL/FRAME:015195/0769

Effective date: 20030902