US3919729A - Method for cleaning carpets - Google Patents
Method for cleaning carpets Download PDFInfo
- Publication number
- US3919729A US3919729A US493917A US49391774A US3919729A US 3919729 A US3919729 A US 3919729A US 493917 A US493917 A US 493917A US 49391774 A US49391774 A US 49391774A US 3919729 A US3919729 A US 3919729A
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- US
- United States
- Prior art keywords
- carpet
- foam
- soiled
- vacuum
- detergent
- 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.)
- Expired - Lifetime
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts 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
- A47L11/4036—Parts or details of the surface treating tools
- A47L11/4044—Vacuuming or pick-up tools; Squeegees
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/34—Machines for treating carpets in position by liquid, foam, or vapour, e.g. by steam
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts 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
- A47L11/408—Means for supplying cleaning or surface treating agents
- A47L11/4083—Liquid supply reservoirs; Preparation of the agents, e.g. mixing devices
Definitions
- the high velocity air stream is created by drawing a vacuum 2,334,914 11/1943 Enckson 134/21 X th gh an opening in the detergent application deggz gs 1 vice positioned against the soiled surface, 3:616:482 11/1971 Brycki....:::::::..:::::::l2:22: 15/321 5 Claims, 15 Drawing Figures US. Patent NOV.18, 1975 Sheet10 f4 3,919,729
- One of the methods and apparatus used by the prior art to clean carpets includes a cleaning head which includes a spray nozzle that sprays a dilute, hot (i.e. 140 F)detergent solution on the surface of a carpet and a single vacuum slot positioned in front of the spray nozzle to remove the detergent solution from the carpet. Because of the construction of the cleaning head, the head can be used to clean carpets only when the cleaning head is being pulled backwards toward the operator.
- a cleaning head which includes a spray nozzle that sprays a dilute, hot (i.e. 140 F)detergent solution on the surface of a carpet and a single vacuum slot positioned in front of the spray nozzle to remove the detergent solution from the carpet.
- This prior art apparatus is often referred to as a steam cleaning apparatus although steam, in the true sense, is not used in the process.
- These steam cleaning apparatus are extremely heavy and require two men to efficiently operate them. They apply large amounts of water (6-12 gals/100 ft to remove allthe soil from a carpet simultaneously and as a consequence, often have power requirements which exceed the normal amp circuits found in a residential home.
- large amounts of water which must be used in the cleaning operation and because the single vacuum slot cannot effectively remove all the water the carpets are typically out of service for long period of time (12-48 hours, longer in humid weather).
- Another method often used to clean carpets is the shampoo method.
- a very dense, thick, nonflowing foam of the consistency of aerosol shaving foams is generated and applied to the surface of the carpet.
- This foam is worked into the carpet by a revolving brush.
- This method is effective in removing soil at surface level but often fails to remove deep down embedded dirt at the bottom of the carpet pile.
- streaking often occurs.
- these shampoo methods using a thick foam are utilized in conjunction with an apparatus that also vacuums the carpet to take up the thick foam in addition to working the carpet with a revolving brush.
- the present invention relates to a method for cleaning a soiled surface, such as a carpet, including applying a liquid detergent to the soiled surface, contacting the soiled surface containing the detergent with a high velocity air stream to produce a unique, low stability, wet flowable foam and removing the thus produced foam and entrained soil from the surface.
- This foam has suspended in it soil removed from the soiled surface and provides a cleaned surface when the foam is removed such as by vacuum.
- the soil may be removed deeply from the base of the pile.
- the high velocity air stream is created by drawing a vacuum through an opening in a cleaning device wherein the opening is positioned against the soiled surface. The air drawn into the opening by the vacuum creates the high velocity air stream that contacts the moist detergent containing carpet to produce the described foam in the carpet.
- the air stream has a velocity of about 30 to 50 miles per hour through the carpet pile.
- the present invention relates to a new and improved suction head for a surface vacuum cleaning apparatus to clean a soiled surface such as a carpet.
- This suction head includes a surface contacting glide shoe having spaced apart slots positioned on the bottom surface contacting face of the shoe wherein one slot is positioned adjacent to the leading edge of the shoe and another slot is positioned adjacent to the trailing edge of the shoe.
- Each of these slots is in fluid communication with a vacuum conduit adapted to be connected at one end to a suitable vacuum source.
- a nozzle for discharge of a detergent containing fluid to the surface to be cleaned is positioned within the suction head between the spaced apart slots and above the bottom surface contacting face of the glide shoe.
- a suitable opening is provided in the suction head so as to enable air to pass to the soiled surface being cleaned through the interior suction head.
- This opening permits air to flow past the nozzle in the direction in which the cleaning fluid is expelled from the nozzle, between the slots of the glide shoe and into said slots from both sides thereof to eliminate fuzz and grit build up in the interior of the shoe between the glide shoe slots and the nozzle.
- This glide shoe can be of a rigid non-absorptive material, such as plastic for cleaning carpets or it can be manufactured from a spongelike material for cleaning walls and floors.
- the slot on the base of the glide shoe defines a sharp right angle with the bottom surface of the glide shoe to assure that the maximum air velocity of the air entering the slot is downstream of the slot and within the carpet rather than in the slot proper.
- the base of the glide shoe can be formed in any of a number of shapes, such as rectangular, circular or triangular.
- FIGS. l-15 Particular preferred embodiments of the present invention are illustrated in FIGS. l-15 which are attached hereto.
- FIG. 1 is a perspective view of a cleaning apparatus embodying the suction head of the present invention and which may be utilized to clean carpets as well as floors according to the process of the present invention.
- FIG. 2 is a detailed side cross-sectional view of a lower portion of the cleaning apparatus illustrated in FIG. 1 taken along line 2 2 in FIG. 1.
- FIG. 3 is a detailed cross-sectional view of the suction head illustrated in FIG. 2.
- FIG. 4 is a rear, plan view of the suction head taken along line 4 4 in FIG. 3.
- FIG. 5 is a bottom, plan view of the suction head taken along line 5 5 in FIG.'4.
- FIG. 6 is a perspective view of a cleaning apparatus utilizing a hand operated suction head which embodies the principles of the present invention and which is useful for cleaning concentrated and/or isolated dirty spots on a carpet or upholsteryv
- FIG. 7 is a vertical cross-sectional view of the suction head taken along line 7 4 7 in FIG. 6.
- FIG. 8 is a bottom, plan view of the suction head taken along line 8 8 in FIG. 7.
- FIG. 9 is a bottom plan view of a triangular shaped glide plate which may be used with a suction head.
- FIG. 10 is a bottom plan view of a circular glide plate which may be used with a suction head.
- FIG. 11 is a cross-sectional view of the outer housing of the suction head shown in FIG. 6.
- FIG. 12 is an end plan view of the outer housing taken along line 12 12in FIG. 11.
- FIG. 13 is a cross-sectional view of an inner housing placed within the outer housing illustrated in FIG. 11 to provide the suction head construction illustrated in FIG. 7.
- FIG. 14 is an end plan view of the inner housing illustrated in FIG. 13 taken along line 14 14.
- FIG. 15 is a schematic, flow diagram illustrating the unique method of the present invention which is incorporated in the carpet cleaning apparatus illustrated in FIGS. 1 and 6.
- FIG. 15 there is illustrated a schematic flow diagram of the principles embodied in the method and apparatus of the present invention.
- Detergent solution 58 is withdrawn from detergent reservoir 56 by pump 60 and applied to the surface of a carpet 64 by spray nozzles 62 in predetermined amounts.
- a vacuum created by blower withdraws room air beneath the edges of the suction head 66 (see FIG. 7) to create a high velocity air stream between the fibers in the carpet pile and to produce a low stability, wet, flowable foam.
- This foam is in marked contrast to the high stability, dry, nonflowable foams heretofore used by the art in conjunction with rotating bristle carpet scrubbers that stay on the surface of the carpet and do not penetrate deeply into the carpet pile.
- the foam produced in accordance with the present invention has a low stability, i.e., it will decompose within a few minutes and is flowable, i.e., if placed on a 45 inclined plane, it will float to the bottom rather rapidly. As a consequence, the foam will penetrate deeply into the carpet pile to remove imbedded dirt.
- Two factors are important in producing a foam of this consistency. One is air velocity and the other is detergent identity and/or concentration.
- a concentrated detergent solution containing 14 weight percent sodium lauryl sulfate wherein the sodium sulfate is about 30% active when added to tap water to provide a concentration within the range of one-eighth ounce of concentrated detergent solution per gallon to about 2 ounces of concentrated detergent solution per gallon will produce a foam of the desired consistency, when contacted with a high velocity air stream, i.e. about 30-50 mph. If 4 ounces of detergent solution per gallon are utilized, the foam produced will be stable, still and non-flowing and will approximate those foams heretofore used with rotary brush scrubbers and is unsuitable to deep clean a carpet.
- the described detergent solution is applied at the rate of two to three gallons of total solution per square feet of carpet to produce a thorough, deep cleaning of a typically soiled carpet.
- This is in contrast to the 5 to gallons of liquid applied per 100 square foot amounts used in the priorar t-steam cleaning process.
- V This difference in result occurs because in the present invention, two things occur before the use of detergent. First, the matted fibers are lifted and air passages to the base of the pile are opened by vacuum. Next, a large amount of the soil (70-95% by weight and bulk) are removed in a dry state by air vacuum alone, thus considerably reducing the amount of soil to be removed by liquid means. The removal of the loose bulkier soil leaves behind film attached soils which require liquidization to be removed. In steam cleaning the bulk soil and the film soil are removed simultaneously. This however, requires a large amount of detergent solution. Thus, since the present invention uses small amounts of water, long evaporation times, risk of mildew formation, dye damage and carpet shrinkage are avoided.
- the foam created according to the present invention penetratesdeep into the pile of carpet 64 and is withdrawn from the carpet pile in admixture with dirt contained in the carpet through vacuum conduit 68.
- a suitable anti-foam agent 70 is admixed with the foam in conduit 68 so that the foam is reduced to liquid droplets in the air and can be readily separated in the conventional cyclone separator .72.
- Such anti-foam agents are well known to those skilled in the art and include the dimethylpolysiloxanes and other modified silicones. Particularly preferred anti-foam agents are the SAG silicone anti-foams marketed by Union Carbide Corporation.
- the foam is decomposed in conduit 68 downstream from the point of addition of the anti-foam agent 70 and is passed to cyclone separator 72 wherein the greatest part of waste water containing the dirt removed from the carpet is removed through waste receptacle 74 for suitable discharge. Since the foam has low stability, large amounts of antifoam agent are not required.
- the air stream 76, with the small amount of liquid, recovered in cyclone separator 72 is passed through a conventional air filter 78 to provide a clean airstream to blower 80 driven by motor 82. The resultant clean air is then passed through muffler 84 to provide a quiet clean air exhaust stream for discharge into the room.
- FIG. 1 there is illustrated in perspective a carpet cleaning device 1 embodying a suction head 14 in accordance with the present invention.
- suction head 14 is connected to a clear plastic vacuum tube 12 which permits the operator to view the soil being removed from the carpet.
- Vacuum tube 12 in turn is connected to vacuum line 8 and service module 10 which contains the detergent reservoir, pump, cyclone, filter, blower, waste receptacle and muffler components shown schematically in FIG. 15.
- cleaning device 1 is manipulated on wheels 3 by handles 2. Wheels 3 are retracted during the cleaning operation.
- the amount of detergent solution passed to the carpet surface is controlled by liquid feed control 4.
- a suitable anti-foaming agent is added to conduit 8 in small predetermined amounts from foam control reservoir 6 to break up the foam produced on the surface of the carpet cleaning tool 1.
- Suction head 14 comprises a pair of spaced apart suction nozzles 18 and separated by an opening 19.
- a glide shoe 16 is positioned on the bottom of suction nozzles 18 and 20 to insure smooth contact between tool 1 and the carpet surface.
- Weights 24 and 26 positioned adjacent to mounting bracket 28 and wheel 3 provide pressure to insure that the air passing through carpet does not bypass the unit.
- Suction head 14 is preferably manufactured from cast metal and is provided with a non-absorptive glide shoe l6 manufactured from a suitable long wearing abrasion resistant plastic material. Although glide shoe 16 is illustrated as a replaceable separate component it could be integrally incorporated into suction head 14 during manufacture thereof. Suction head 14 is connected to extraction tube 12 by a suitable connecting pipe 22 that fits snugly on the interior of the end portions of suction head 14 and extraction tube 12.
- spaced apart suction nozzles 18 and 20 have a continuous elongated slot 18a and 20a respectively incorporated therein for withdrawal of air from the pile of the carpet.
- Suitable spray nozzles 25 are positioned at spaced apart intervals within opening 19 and above glide shoe 16 to spray the detergent solution on the carpet, as discussed in relation to FIG. 15, so as to thereby produce a low stability, wet, flowable foam when contacted by the air flowing into slots 18a and 20a.
- the foam suspends soil present in the soiled carpet. This foam, with soil contained therein, is then withdrawn up through suction nozzles 18 and 20, through extraction tube 12, vacuum line 8 and passed to service module 10.
- Air is able to enter into the slots 18a and 20a in suction members 18 and 20 along both sides of the slots, i.e., from both the interior and the exterior of the head due to the opening 19 between the suction members. This is essential to eliminate fuzz and grit build-up between the slots 18a and 20a.
- FIG. 6 there is illustrated a hand held suction head 30 for cleaning isolated or badly soiled spots on a carpet or upholstery surface.
- This hand held suction head 30 has a neck portion 48 connected with the service module via the line 8, in the same manner as illustrated in FIG. 15.
- Liquid control valve 32 controls the amount of detergent solution applied to the surface of the carpet.
- Hand held suction head 30 is illustrated in further detail in FIGS. 7 and 8.
- Suction head 30 comprises an outer housing 31 having concentrically disposed therein a smaller, spaced apart inner housing 33.
- Outer housing 31 is illustrated in further detail in FIG. 11 and 12.
- Inner housing 33 is illustrated in further detail in FIGS. 13 and 14.
- Inner housing 33 and outer housing 31 cooperate to form a forward suction conduit at nozzle 36 and a rear suction conduit on nozzle 38 in fluid communication with vacuum conduit 48 which also forms the hand held neck of the tool connected to vacuum line 8.
- the entire space between the inner and outer housing is a fluid communication with vacuum conduit or neck 48.
- Spray nozzle 40 is connected to shoulder 39 on the interior of inner wall 33.
- Liquid conduit 41 passes through opening 43 in inner housing 33 and to spray nozzle 40. Flow through conduit 41 is controlled by control valve 42 which is actuated by hand operated control valve handle 32 positioned on the bottom side of neck 48.
- Glide shoe 44 is positioned on the face of tool 30 to minimize friction between the tool and the carpet being cleaned.
- Glide shoe 44 includes a forward slot 45, a rear slot 46, and side slots 47 in fluid communication with the space between housings 31 and 33.
- Center opening 49 in glide shoe 44 is positioned immediately below spray nozzles 40 and between to permit liquid discharged therefrom to contact carpet 54.
- forward slot 45, rear slot 46, and side slot 47 form a sharp right angle with a face of glide shoe 44. This is important since the air drawn into the section 36 and 38 should have a maximum velocity outside of slots 45 and 46 to insure thorough contact with the detergent solution applied to the carpet and creation of the desired foam. If these slots had a rounded opening, the maximum velocity would occur within the slots and the full benefit of the air flow to the carpet pile to create the desired foam would not be obtained.
- FIGS. 9 and 10 Illustrated in FIGS. 9 and 10 are alternative configurations for glide shoe 44 and hand extraction tool 30.
- Triangular glide shoe 50 illustrated in FIG. 9 is particularly suited for getting into hard to reach spots on a carpet surface.
- Circular glide shoe 52 illustrated in FIG. 10 can be used instead of the rectangular configuration illustrated in FIG. 8.
- Openings 34 positioned on both side walls of inner housing 33 and outer housing 31 provide communication from the atmosphere to the interior of tool 30 when it is placed against a surface to be cleaned. As illustrated, two openings are used on head 30. However, these openings can be positioned above the entire periphery of the head. Similarly, a single opening can be utilized. The important thing is to allow air to flow down between slots 45 and 46 so that air can enter these slots from both directions, i.e., from both the exterior and the interior of the head. As discussed earlier, this opening is necessary to insure effective operation of the head and air flow into both sides of the slots in glide shoe 44. Opening 34, however, is not in direct fluid communication with conduits 36 and 38. Rather this opening is isolated from these conduits as it passes through the vacuum head. Air entering opening 34 can enter conduits 36 and 39 only through slots 45, 46, and 47.
- the vacuum imposed by service module 10 through line 8 draws air through the pile of the carpet 54 primarily via forward suction conduit 36 and rear suction conduit 38. Simultaneously, liquid detergent is expelled through spray nozzle 40 into the carpet pile.
- this detergent is contacted by the high velocity air stream moving through the carpet pile due to the vacuum imposed thereon, a low stability, wet, flowable foam is formed that reaches down to the base of the carpet pile and removes not only the dirt physically attached to the fibers in the carpet pile, but also effectively removes loose dirt contained at the base of the carpet.
- the formation of this foam is analogous to the mixing of gasoline and air in a carburetor due to the passage of air through a constricted opening.
- An advantage of the foam produced in the apparatus and method of the present invention is that it requires small amounts of water to effectively clean a carpet. Since small amounts of water are required, i.e., only two to three gallons per hundred square feet of carpet, the carpet is ready for normal use in a relatively short period of time. In addition, the carpet is cleaned thoroughly since more than just the mere superficial exposed surface of the carpet is cleaned. As a consequence, the carpet stays cleaner for a longer period of time since there is no hidden dirt to migrate to the surface of the carpet and produce a soiled appearance. Further, because the foam produced has little stability, as the foam is withdrawn through conduit 8 liquid plugs or slugs will not form.
- a method for cleaning a soiled carpet which comprises:
- said detergent solution containing Va ounce-t0 2 ounces of a concentrated detergent solution per gallon of solution, said concentrated detergent comprising 14 weight sodium lauryl sulfate wherein the sulfate is 30% active;
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US493917A US3919729A (en) | 1974-08-01 | 1974-08-01 | Method for cleaning carpets |
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US493917A US3919729A (en) | 1974-08-01 | 1974-08-01 | Method for cleaning carpets |
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US493917A Expired - Lifetime US3919729A (en) | 1974-08-01 | 1974-08-01 | Method for cleaning carpets |
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Cited By (36)
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US4083077A (en) * | 1975-12-15 | 1978-04-11 | Knight Arlen M | Hand tool for cleaning fabric |
US4123818A (en) * | 1976-10-07 | 1978-11-07 | Mathew Hurwitz | Carpet and floor washing accessory for wet pick-up-vacuum cleaners |
DE2820568A1 (en) * | 1977-05-13 | 1978-11-23 | Vax Appliances Ltd | CLEANING HEAD |
US4191589A (en) * | 1977-04-25 | 1980-03-04 | The John J. Sundheim Family Estate | Method and apparatus for cleaning carpets and surfaces using cleaning fluid |
US4225991A (en) * | 1979-04-12 | 1980-10-07 | Albany International Corp. | Fabric washing system |
US4249399A (en) * | 1979-12-10 | 1981-02-10 | Albany International Corp. | Fabric washing system |
US4281066A (en) * | 1978-12-14 | 1981-07-28 | Volker Thran | Transportable apparatus for taking samples for microbiological, particularly bacteriological tests from surfaces |
US4542556A (en) * | 1984-02-06 | 1985-09-24 | Hightec Manufacturing Corporation | Carpet vacuum, cleaning, and dyeing apparatus |
US4649594A (en) * | 1985-10-18 | 1987-03-17 | Grave Dale L | Cleaning head for smooth and napped surface covering materials |
US4654925A (en) * | 1986-04-28 | 1987-04-07 | Grave Dale L | Nozzle structure for a surface covering cleaning machine |
US4897203A (en) * | 1988-02-26 | 1990-01-30 | Pure-Chem Products, Inc. | Process and apparatus for recovery and recycling conveyor lubricants |
US4897202A (en) * | 1988-01-25 | 1990-01-30 | Pure-Chem Products, Inc. | Process and apparatus for recovery and recycling conveyor lubricants |
US5224235A (en) * | 1991-06-28 | 1993-07-06 | Digital Equipment Corporation | Electronic component cleaning apparatus |
US5383972A (en) * | 1993-01-12 | 1995-01-24 | Interface Service Management, Inc. | Method of carpet cleaning and maintenance |
US5501396A (en) * | 1993-09-08 | 1996-03-26 | Cyclone Surface Cleaning, Inc. | Mobile cyclonic power wash system with water reclamation and rotary |
US5601659A (en) * | 1995-03-13 | 1997-02-11 | Cyclone Surface Cleaning, Inc. | Mobile power wash system with water reclamation and hydrocarbon removal method |
US5651830A (en) * | 1993-02-01 | 1997-07-29 | Total Service Co., Inc. | Method for cleaning surface of external wall of building |
US5729863A (en) * | 1996-01-02 | 1998-03-24 | Papesh; Thomas S. | Spray mist collector for spray guns |
USD419731S (en) * | 1998-08-24 | 2000-01-25 | Rexair, Inc. | Combined wet-dry vacuum cleaner |
US6189170B1 (en) * | 1999-08-12 | 2001-02-20 | Ronald E. Sherwood | Area rug cleaning method |
US6391208B2 (en) | 2000-04-17 | 2002-05-21 | David O. Burrow | Filter for a carpet cleaning system |
US6533871B2 (en) * | 2001-01-12 | 2003-03-18 | Royal Appliance Mfg. Co. | Carpet extractor with dual nozzles for dual brushrolls |
US20060048334A1 (en) * | 2002-05-23 | 2006-03-09 | Tucker Randall L | Sand wand assembly |
US20070113528A1 (en) * | 2005-10-18 | 2007-05-24 | Knuth Steven L | Vacuum bag mounting and viewing features |
US20070240276A1 (en) * | 2006-04-17 | 2007-10-18 | Roger Pedlar | Flexible pickup lips for use with fixed vacuum shoes on self-contained and propelled carpet cleaning equipment |
US20080263812A1 (en) * | 2007-04-24 | 2008-10-30 | Usp Holding Corp. | Floor cleaning tool |
US20090260177A1 (en) * | 2008-04-21 | 2009-10-22 | Edward Richards | Hard surface cleaner |
US20100200080A1 (en) * | 2009-02-09 | 2010-08-12 | Roden Michael J | Systems and methods for transferring heat and/or sound during fluid extraction and/or cleaning processes |
US20130086954A1 (en) * | 2010-07-20 | 2013-04-11 | Yunfeng Zhang | Clothing Steam Ironing Apparatus |
USD684737S1 (en) | 2011-08-31 | 2013-06-18 | Dri-Eaz Products, Inc. | Extractor housing |
US8510902B2 (en) | 2007-12-03 | 2013-08-20 | Dri-Eaz Products, Inc. | Air induction hard surface cleaning tool with an internal baffle |
WO2014039446A1 (en) * | 2012-09-04 | 2014-03-13 | Sapphire Scientific Inc. | Fluid extracting device with shaped head and associated systems and methods of use and manufacature |
USD701661S1 (en) | 2012-09-04 | 2014-03-25 | Dri-Eaz Products, Inc. | Extractor port housing |
US9195238B2 (en) | 2012-06-15 | 2015-11-24 | Sapphire Scientific, Inc. | Waste water vessels with multiple valved chambers, and associated systems and methods |
US10060641B2 (en) | 2015-02-25 | 2018-08-28 | Dri-Eaz Products, Inc. | Systems and methods for drying roofs |
CN109402996A (en) * | 2017-08-18 | 2019-03-01 | 美的集团股份有限公司 | Laundry care perms and with its laundry care device |
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Cited By (49)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4083077A (en) * | 1975-12-15 | 1978-04-11 | Knight Arlen M | Hand tool for cleaning fabric |
US4123818A (en) * | 1976-10-07 | 1978-11-07 | Mathew Hurwitz | Carpet and floor washing accessory for wet pick-up-vacuum cleaners |
US4191589A (en) * | 1977-04-25 | 1980-03-04 | The John J. Sundheim Family Estate | Method and apparatus for cleaning carpets and surfaces using cleaning fluid |
DE2820568A1 (en) * | 1977-05-13 | 1978-11-23 | Vax Appliances Ltd | CLEANING HEAD |
FR2390145A1 (en) * | 1977-05-13 | 1978-12-08 | Vax Appliances Ltd | CLEANING HEAD |
US4281066A (en) * | 1978-12-14 | 1981-07-28 | Volker Thran | Transportable apparatus for taking samples for microbiological, particularly bacteriological tests from surfaces |
US4225991A (en) * | 1979-04-12 | 1980-10-07 | Albany International Corp. | Fabric washing system |
US4249399A (en) * | 1979-12-10 | 1981-02-10 | Albany International Corp. | Fabric washing system |
US4542556A (en) * | 1984-02-06 | 1985-09-24 | Hightec Manufacturing Corporation | Carpet vacuum, cleaning, and dyeing apparatus |
US4649594A (en) * | 1985-10-18 | 1987-03-17 | Grave Dale L | Cleaning head for smooth and napped surface covering materials |
US4654925A (en) * | 1986-04-28 | 1987-04-07 | Grave Dale L | Nozzle structure for a surface covering cleaning machine |
US4897202A (en) * | 1988-01-25 | 1990-01-30 | Pure-Chem Products, Inc. | Process and apparatus for recovery and recycling conveyor lubricants |
US4897203A (en) * | 1988-02-26 | 1990-01-30 | Pure-Chem Products, Inc. | Process and apparatus for recovery and recycling conveyor lubricants |
US5224235A (en) * | 1991-06-28 | 1993-07-06 | Digital Equipment Corporation | Electronic component cleaning apparatus |
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