US20130180055A1 - Method of cleaning a carpet segment - Google Patents
Method of cleaning a carpet segment Download PDFInfo
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- US20130180055A1 US20130180055A1 US13/718,040 US201213718040A US2013180055A1 US 20130180055 A1 US20130180055 A1 US 20130180055A1 US 201213718040 A US201213718040 A US 201213718040A US 2013180055 A1 US2013180055 A1 US 2013180055A1
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- cleaning
- act
- narrow band
- cleaning solution
- wet
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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
- A47L11/34—Machines for treating carpets in position by liquid, foam, or vapour, e.g. by steam
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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
- A47L11/4011—Regulation of the cleaning machine by electric means; Control systems and remote control systems therefor
Abstract
The embodiments of the invention relate to methods of use of an extraction cleaning machine for cleaning a carpet segment of relatively rectangular configuration defined by a first edge, a second edge and opposite side edges comprising (a) applying a liquid cleaning solution to the carpet segment in a narrow band that extends between the side edges and moves between the first and second edges and (b) applying suction in a narrow band that extends between the side edges and moves between the first and second edges. Acts (a) and (b) can be repeated and performed in a predetermined sequence to improve the cleaning effectiveness of an extraction cleaning machine.
Description
- This application claims the benefit of U.S. Provisional Patent Application No. 61/587,934, filed Jan. 18, 2012, which is incorporated herein by reference in its entirety.
- Extraction cleaning machines are known for deep cleaning carpets and other fabric surfaces such as upholstery. Most carpet extractors comprise a fluid delivery system, a fluid recovery system, and, optionally, an agitation system. The fluid delivery system typically comprises one or more fluid supply tanks for storing cleaning fluid, a fluid distributor for applying the cleaning fluid to the surface to be cleaned, and a fluid supply conduit for supplying the fluid from the supply tank to the fluid distributor. The fluid recovery system typically comprises a recovery tank, a suction nozzle adjacent to the surface to be cleaned and in fluid communication with the recovery tank through a working air conduit, and a vacuum source in fluid communication with the working air conduit to draw cleaning fluid from the surface to be cleaned through the nozzle and working air conduit into the recovery tank. The agitation system can include an agitator element for scrubbing the surface to be cleaned, an optional drive means, and selective control means. The agitation system can include a fixed or driven agitator element that can comprise a brush, pad, sponge, cloth, and the like. The agitation system can also include driving and control means including motors, turbines, belts, gears, switches, sensors, and the like. See, for example, U.S. Pat. No. 6,131,237 to Kasper et al. and U.S. Pat. No. 7,073,226 to Lenkiewicz et al.
- According to an embodiment of the invention, a method of cleaning a carpet segment of relatively rectangular configuration defined by a first edge, a second edge and opposite side edges comprises: (a) applying a liquid cleaning solution to the carpet segment in a narrow band that extends between the side edges and moves between the first and second edges, (b) applying suction in a narrow band that extends between the side edges and moves between the first and second edges, (c) repeating act (a), and (d) repeating act (b). The acts (a), (b), (c) and (d) can be carried out successively with an end of a preceding act defining a beginning of a subsequent act.
- According to another embodiment of the invention, the movement of the cleaning solution narrow band in act (a) and the movement of the suction narrow band in act (b) are in opposite directions.
- In yet another embodiment, the method can further comprise mechanically agitating the carpet segment during movement of the suction narrow band in acts (b) and (d).
- In another embodiment, the method can further comprise heating the liquid cleaning solution prior to applying the liquid cleaning solution in acts (a) and (c).
- According to another embodiment of the invention, the acts (a) through (d) are carried out with an extraction machine.
- In yet another embodiment, a method of cleaning a carpet segment of relatively rectangular configuration defined by a first edge, a second edge and opposite side edges comprises: (a) applying a liquid cleaning solution to the carpet segment in a narrow band that extends between the side edges and moves between the first and second edges, (b) repeating act (a), (c) repeating act (a), and (d) applying suction in a narrow band that extends between the side edges and moves between the first and second edges. The acts (a), (b), (c) and (d) can be carried out successively with an end of a preceding act defining a beginning of a subsequent act.
- According to another embodiment of the invention, the movement of the cleaning solution narrow band in act (a) and the movement of the cleaning solution narrow band in act (b) are in opposite directions.
- According to another embodiment of the invention, the movement of the cleaning solution narrow band in act (a) and the movement of the cleaning solution narrow band in act (c) are in the same direction.
- According to another embodiment of the invention, the movement of the cleaning solution narrow band in act (a) and the movement of the suction narrow band in act (d) are in opposite directions.
- In yet another embodiment, the method can further comprise mechanically agitating the carpet segment during movement of the suction narrow band in act (d).
- In another embodiment, the method can further comprise heating the liquid cleaning solution prior to applying the liquid cleaning solution in acts (a), (b), and (c).
- In the drawings:
-
FIG. 1 is a schematic of an extraction cleaning machine according to a first embodiment of the invention. -
FIG. 2 is a flowchart illustrating a method of use of an extraction cleaning machine according to a second embodiment of the invention -
FIG. 3 is a flowchart illustrating a method of use of an extraction cleaning machine according to a third embodiment of the invention. -
FIGS. 4-6 are charts illustrating average percent clean test results for three extraction cleaning systems according to an embodiment of the invention. -
FIGS. 7-9 are charts illustrating average Delta-E test results for three extraction cleaning systems according to an embodiment of the invention. -
FIG. 10 is a chart illustrating test results for an average amount of liquid retained by carpet cleaned with three different extraction cleaning systems according to an embodiment of the invention. -
FIGS. 11-12 are charts illustrating average percent clean test results for an extraction cleaning system using two different cleaning formulas according to an embodiment of the invention. - The embodiments of the invention relate to methods of sequencing wet and dry strokes of an extraction cleaning machine, often referred to as an extractor or deep cleaner, for cleaning carpets and other soft surfaces. The methods can be used with any suitable extractor, non-limiting examples of which include commonly assigned U.S. Pat. No. 6,131,237 to Kasper et al., U.S. Pat. No. 7,784,148 to Lenkiewicz et al., and U.S. Pat. No. 7,320,149 to Huffman et al., which are incorporated herein by reference in their entirety. While the embodiments of the invention are described in the context of cleaning carpets, it will be understood that the embodiments of the invention are also suitable for use with any suitable soft surface, non-limiting examples of which include rugs, upholstery and drapes.
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FIG. 1 is a schematic of anextractor 10 suitable for use with the embodiments of the method. Any suitable type of extractor having a fluid delivery and recovery system can be used with the embodiments of the invention described herein. The details of the extractor are not germane to the invention; only those components necessary for a complete understanding of the embodiment of the invention are described. - The
extractor 10 includes a fluid delivery system comprising a firstcleaning fluid supply 12 and a secondcleaning fluid supply 14 storing first and second cleaning fluids, respectively. The first and secondcleaning fluid supplies - The first and second
cleaning fluid supplies metering assembly 16 through respective first and second cleaningfluid supply lines fluid supply lines metering assembly 16 can be controlled by first andsecond valve mechanisms metering assembly 16 to provide a cleaning solution to aspray assembly 26 for distributing the cleaning solution onto the surface to be cleaned. Thespray assembly 26 can include one or more sprayers, such as those described in U.S. Pat. No. 7,784,148 to Lenkiewicz et al. referenced above. - The fluid delivery system also includes an
optional heater 28 and apump assembly 30. Theheater 28 can be any suitable heater configured to heat fluids, such as an in-line heater. Thepump assembly 30 has a first inlet in fluid communication with the mixing/metering assembly 16 and an outlet in fluid communication with an inlet of thespray assembly 26. Thepump assembly 30 is operatively connected to a motor/fan assembly 32 for operation of a primer stack portion thereof, as described in the aforementioned Kasper patent. Alternatively, the pump can comprise a conventional solenoid pump. - The fluid recovery system comprises a recovery chamber or
tank 34 which is used to store spent cleaning solution and debris that is recovered from the surface to be cleaned. Anozzle assembly 36 is in fluid communication with therecovery tank 34 for ingesting spent cleaning solution and debris for collection within therecovery tank 34. Thenozzle assembly 36 can be part of a foot assembly (not shown) configured to be positioned adjacent the surface to be cleaned during use of theextractor 10. The foot assembly can further include additional components such as an agitator assembly comprising one or more agitators, such as a brush roll, for example, for agitating and providing mechanical cleaning action to the surface to be cleaned. The motor andfan assembly 32 is fluidly coupled with thenozzle assembly 36 for providing suction to draw the spent cleaning solution and debris on the surface being cleaned through thenozzle assembly 36 and into the recoverchamber 34. Air drawn into the fluid recovery system through thenozzle assembly 36 is drawn through the motor andfan assembly 32 before being exhausted from theextractor 10. - The
extractor 10 can also include acontrol system 38 for operably controlling the various components of theextractor 10, such as the first andsecond valve mechanisms metering assembly 16, thepump 28, theheater 30 and the motor/fan assembly 32, for example. Theextractor 10 can also include anactuator 40, such as a button or trigger, which can be selectively actuated to control the delivery of cleaning solution to the surface to be cleaned. - In use, upon actuation of the
actuator 40 by a user, thecontrol system 38 can control the first andsecond valve mechanisms metering assembly 16 to generate a cleaning solution. Thecontrol system 38 can further control thepump 28 and optionally theheater 30 to provide the cleaning solution to thespray assembly 26 for application to the surface to be cleaned. Thecontrol system 38 can be configured to control the motor/fan assembly 32 such that during application of the cleaning solution, suction is not applied through thenozzle assembly 36. Alternatively, thecontrol system 38 can be configured to apply suction during the application of the cleaning solution. Upon release of theactuator 40, thecontrol system 38 can control the components of theextractor 10 to cease dispensing of the cleaning solution through thespray assembly 26. The spent cleaning solution and debris on the surface being cleaned can be removed by suction through thenozzle assembly 36 and stored in therecovery chamber 34 for later disposal by the user. Suction through thenozzle assembly 36 can be initiated automatically by thecontrol system 38 upon release of theactuator 40, manually by the user through a second actuator operably coupled with the motor/fan assembly 32, or suction can be automatically applied by thecontrol system 38. -
FIG. 2 illustrates amethod 100 of use of theextractor 10 for cleaning a surface to be cleaned, such as an area of carpet. The methods of the embodiments of the invention are described with respect to a “stroke” of theextractor 10. As used herein, a stroke refers to movement of theextractor 10 relative to the surface being cleaned in a single direction, with or without the distribution of cleaning solution, from the perspective of a user positioned behind theextractor 10. A “forward stroke” refers to movement of theextractor 10 in a forward direction, away from the user. A “reverse stroke” refers to movement of theextractor 10 in a reverse direction, back towards the user. A “wet stroke” refers to a stroke, either forward or reverse, during which the user has actuated the actuator 40 to distribute cleaning solution to the surface being cleaned. A “dry stroke” refers to a stroke, either forward or reverse, during which the motor/fan assembly 32 is actuated to provide suction to thenozzle assembly 36 to remove spent cleaning solution and/or debris on the surface being cleaned without distribution of cleaning solution to the surface. During the dry stroke, the agitator assembly can also be actuated. - The
method 100 starts with the assumption that the user has filled the first and second cleaning fluid supplies 12, 14 with the desired cleaning fluids, has positioned theextractor 10 on the surface to be cleaned and is standing behind theextractor 10. At 102 the user can push theextractor 10 in a forward direction, away from the user, while actuating theactuator 40 to distribute cleaning solution to the surface, thus completing a first wet stroke. At 104 the user can pull theextractor 10 in a reverse direction, back towards the user, over the same general area traversed during the firstwet stroke 102, without actuating theactuator 40, thus completing a first dry stroke. At 106 the user can again push theextractor 10 in a forward direction, generally traversing the same area of the surface traversed during the first wet stroke at 102 and the first dry stroke at 104, while actuating theactuator 40 to distribute the cleaning solution, thus completing a second wet stroke. At 108 the user can pull theextractor 10 in a reverse direction, generally traversing the same area of the surface traversed during the previous strokes at 102, 104 and 106, without actuating theactuator 40, thus completing a second dry stroke. - While the
method 100 is described as beginning with a forward stroke, it will be understood that themethod 100 can begin with a reverse stroke. Themethod 100 can be completed one or more times over the same general area of the surface or may be used to clean a larger area. For example, themethod 100 can be used one or more times on the same general area to clean a stain or spot on the surface being cleaned. In another example, themethod 100 can be repeated multiple times in the process of cleaning an entire room. - The
method 100 can be used to clean a carpet segment having a first edge defined by a position of theextractor 10 at the start of the first wet stroke, a second edge defined by a position of theextractor 10 at the end of the first wet stroke and opposite side edges extending between the first and second edges of the carpet segment. The width of the carpet segment between the opposite side edges can generally be defined by a width of a cleaning solution spray pattern that is dispensed by thespray assembly 26 and/or a width of thenozzle assembly 36. Alternatively, the width of the carpet segment can be defined by the width of the extractor foot assembly, with the cleaning solution spray pattern and the width of thenozzle assembly 36 extending across at least a portion of the width of the foot assembly. In this manner, movement of theextractor 10 according to the strokes of themethod 100 defines a relatively rectangular carpet segment that is cleaned according to themethod 100. - Movement between edges of the carpet segment during the
method 100 generally defines a stroke, with each stroke being carried out successively such that an end of one stroke is followed by a beginning of a second stroke within a relatively short period of time, on the order of seconds or minutes, for example. In one example, the period of time between strokes may be based on the amount of time it takes a user to actuate theactuator 40 to dispense a cleaning solution at the beginning of a wet stroke and provide momentum to move theextractor 10 and/or the amount of time it takes a user to release theactuator 40 at the end of a wet stroke and reverse the movement of theextractor 10. - A distance between the first and second edges of the carpet segment can vary depending on the user's approach to cleaning the surface to be cleaned. For example, when the user is cleaning an entire room, the distance between the first and second edges of the carpet segment may be greater than the distance between the first and second edges when the user is cleaning only a portion of a room, such as during a spot treatment.
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FIG. 3 illustrates asecond method 200 of use of theextractor 10 for cleaning a carpet segment of a surface to be cleaned, such as an area of carpet. Themethod 200 is similar to themethod 100 except for the sequence and ratio of wet and dry strokes. - The
method 200 starts with the assumption that the user has filled the first and second cleaning fluid supplies 12, 14 with the desired cleaning fluids, has positioned theextractor 10 on the surface to be cleaned and is standing behind theextractor 10. At 202 the user can push theextractor 10 in a forward direction, away from the user, while actuating theactuator 40 to distribute cleaning solution to the surface, thus completing a first wet stroke. At 204 the user can pull theextractor 10 in a reverse direction, back towards the user, over the same general area traversed during the firstwet stroke 202, while actuating theactuator 40 to distribute cleaning solution to the surface, to complete a second wet stroke. At 206 the user can again push theextractor 10 in a forward direction, generally traversing the same area of the surface traversed during the first and second wet strokes at 202 and 204, while actuating theactuator 40 to distribute the cleaning solution, to complete a third wet stroke. At 208 the user can pull theextractor 10 in a reverse direction, generally traversing the same area of the surface traversed during the previous strokes at 202, 204 and 206, without actuating theactuator 40, thus completing a first dry stroke. - Similar to the
first method 100, themethod 200 can be completed one or more times over the same general area of the surface or may be used to clean a larger area. For example, themethod 200 can be used one or more times on the same general area to clean a stain or spot on the surface being cleaned. In another example, themethod 200 can be repeated multiple times in the process of cleaning an entire room. - The
methods - Cleaning Performance Evaluation
- Methods
- ASTM International has proposed a test method for a laboratory test for determining the relative carpet cleaning effectiveness of a wet extraction cleaning system when tested under standard conditions titled “DRAFT Test Method for Measuring the Carpet Cleaning Effectiveness of Wet Extraction Cleaners,” dated Jan. 20, 2010. The cleaning system is defined as a wet extraction appliance coupled with its included or recommended chemical cleaning formula. The proposed standard determines the carpet cleaning effectiveness based on a standard cleaning method that includes two wet strokes followed by two dry strokes (“two wet/two dry strokes”).
- The carpet cleaning effectiveness of three different commercially available extraction cleaning systems was tested according to the ASTM draft standard using the two wet/two dry strokes cleaning method outlined in the proposed standard. The cleaning effectiveness was also tested using the
method FIGS. 2 and 3 according to the ASTM draft standard in place of the two wet/two dry strokes standard cleaning method to compare the cleaning effectiveness of themethods - The amount of water retained (“water retention”) by the carpet after cleaning according to the ASTM draft standard using each of the different cleaning methods was determined by weighing the carpet test sample before and after cleaning
- Extraction Cleaning Systems
- The three extraction cleaning systems tested include:
- 1) BISSELL® Lift-Off® Deep Cleaning System with the BISSELL® 2X Professional Deep Cleaning formula (“BISSELL® Lift-Off”).
- 2) BISSELL® Proheat® 2X 9200 Deep Cleaning System with the BISSELL® 2X Professional Deep Cleaning formula (“BISSELL® Proheat®”).
- 3) Hoover®
Max Extract® 60 with the Hoover® 2X Concentrate Deep Cleansing formula (“Hoover® Max Extract®”). - Test Results
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FIGS. 4-10 illustrate test data obtained for the three extraction systems listed above, BISSELL® Lift-Off®, BISSELL® Proheat®, and Hoover® Max Extract® according to the ASTM draft standard using each of the different cleaning methods, the ASTM standard cleaning method and themethods FIGS. 2 and 3 . -
Charts FIGS. 4-6 , respectively, illustrate the average percent clean test results at the 95% confidence interval for each of the three extraction cleaning systems according to the ASTM draft standard using the two wet/two dry strokes standard cleaning method, the method 100 (“1 wet 1 dry/1 wet 1 dry”) and the method 200 (“3 wet/1 dry”). For all of theFIGS. 4-9 , the horizontal striped bars correspond to the first, forward stroke traveling in the direction of the lay of the carpet test sample (with the lay of the carpet) and the white bars correspond to the first stroke traveling in the direction opposite to the lay of the carpet test sample (against the lay of the carpet). The average percent clean value and percent clean value plus and minus two standard deviations (“+2s” and “−2s”) is also shown. The percent clean values are calculated as described in the ASTM draft standard. -
Charts FIGS. 7-9 , respectively, illustrate the average Delta-E (ΔE) at the 95% confidence interval for each of the three extraction cleaning systems according to the ASTM draft standard using the two wet/two dry strokes standard cleaning method, the method 100 (“1 wet 1 dry/1 wet 1 dry”) and the method 200 (“3 wet/1 dry”). As discussed in the ASTM draft standard, ΔE is a number representing the distance in color space between two colors. ΔE is derived mathematically and is used in colorimetry to evaluate the extent of color differences and change. ΔE (s-e) is a measure of the change in ΔE between the soiled carpet sample and the carpet sample after it has been cleaned. - As can be seen in
FIGS. 4-9 , the sequencing of the wet and dry strokes used during an extraction cleaning method effects the carpet cleaning effectiveness of the BISSELL® Lift-Off®, BISSELL® Proheat®, and Hoover® Max Extract® extraction cleaning systems. Referring now toFIGS. 4-6 , in general, the average percent clean for 1 wet 1 dry/1 wet 1 dry (method 100) and 3 wet/1 dry (method 200) cleaning methods is greater than the standard 2 wet/2 dry cleaning method for all three extraction cleaning systems when starting cleaning with the lay of the carpet. As illustrated inFIGS. 7-9 , in general, ΔE(s-e) is greater for the 1 wet 1 dry/1 wet 1 dry (method 100) and 3 wet/1 dry (method 200) cleaning methods than the standard 2 wet/2 dry cleaning method for all three extraction cleaning systems both with and against the lay of the carpet. This data suggests that the 1 wet 1 dry/1 wet 1 dry (method 100) and 3 wet/1 dry (method 200) cleaning methods are on par and often better than the standard 2 wet/2 dry cleaning method for cleaning carpets. - Chart 312 of
FIG. 10 illustrates the average amount of liquid retained by the carpet when cleaned using each three extraction cleaning system for each cleaning method with and against the lay of the carpet. - As can be seen in
FIG. 10 , while each of the three cleaning methods includes four strokes, each method results in different amounts of liquid retained by the carpet. For example, while the standard 2 wet/2 dry method andmethod 100 of 1 wet 1 dry/1 wet 1 dry both comprise two wet strokes and 2 dry strokes, the sequencing effects the amount of liquid retained by the carpet, with themethod 100 resulting in an increase in the amount of retained liquid compared to the standard method. Themethod 200 of 3 wet/1 dry has four strokes total, the same as the standard method andmethod 100, however themethod 200 has 3 wet strokes and 1 dry, resulting in more liquid retained by the carpet than either the standard method ormethod 100. -
Charts FIGS. 11 and 12 , respectively, illustrate the test data obtained for the BISSELL® Lift-Off® extractor used with the BISSELL® 2X Professional Deep Cleaning formula and the BISSELL® 2X Fiber Cleansing formula according to the ASTM draft standard using each of the different cleaning methods, the ASTM standard cleaning method and themethods FIGS. 2 and 3 . - As can be seen in
FIGS. 11 and 12 , even when different cleaning formulas are used with the extractor, the sequencing and ratio of wet and dry strokes in the cleaning method affects the cleaning effectiveness of the extraction cleaning system. - The results shown herein illustrate the effect of the sequencing and the ratio of wet and dry strokes in the cleaning effectiveness of an extraction cleaning system. Even when the total number of strokes in the cleaning method is the same, the cleaning effectiveness and the amount of liquid retained by the carpet varies depending on the sequencing and the number of wet and dry strokes. This information can be provided to a user in the form of an instructional manual or a label on the machine such that the user can make an informed decision on how to use the extraction cleaning system to clean the carpet to meet the needs of the user.
- For example, if the user only desires a normal level of cleaning effectiveness and low liquid retention, the standard 2 wet/2 dry method can be used. Alternatively, if the user desires a higher level of cleaning effectiveness and a slightly greater amount of liquid retention is acceptable, then the user can use the
method 100 of 1 wet 1 dry/1 wet 1 dry. In a third option, if the user desires a higher level of cleaning effectiveness and is not concerned with the amount of retained liquid, the user can use themethod 200 of 3 wet/1 dry. The user can use additional dry strokes as needed following themethod 200 or any of the methods described herein to suction additional liquid from the surface to decrease the amount of liquid retained by the surface. - To the extent not already described, the different features and structures of the various embodiments may be used in combination with each other as desired. That one feature may not be illustrated in all of the embodiments is not meant to be construed that it cannot be, but is done for brevity of description. Thus, the various features of the different embodiments may be mixed and matched as desired to form new embodiments, whether or not the new embodiments are expressly described.
- While the invention has been specifically described in connection with certain specific embodiments thereof, it is to be understood that this is by way of illustration and not of limitation. Reasonable variation and modification are possible within the scope of the forgoing disclosure and drawings without departing from the spirit of the invention which is defined in the appended claims.
Claims (12)
1. A method of cleaning a carpet segment of relatively rectangular configuration defined by a first edge, a second edge and opposite side edges, the method comprising:
(a) applying a liquid cleaning solution to the carpet segment in a narrow band that extends between the side edges and moves between the first and second edges;
(b) applying suction in a narrow band that extends between the side edges and moves between the first and second edges;
(c) repeating act (a); and
(d) repeating act (b);
wherein acts (a), (b), (c) and (d) are carried out successively with an end of a preceding act defining a beginning of a subsequent act.
2. The method of claim 1 wherein the movement of the cleaning solution narrow band in act (a) and the movement of the suction narrow band in act (b) are in opposite directions.
3. The method of claim 1 , further comprising mechanically agitating the carpet segment during the movement of the suction narrow band in acts (b) and (d).
4. The method of claim 1 , further comprising heating the liquid cleaning solution prior to applying the liquid cleaning solution in acts (a) and (c).
5. The method of claim 1 wherein the acts (a) through (d) are carried out with an extraction machine.
6. A method of cleaning a carpet segment of relatively rectangular configuration defined by a first edge, a second edge and opposite side edges, the method comprising:
(a) applying a liquid cleaning solution to the carpet segment in a narrow band that extends between the side edges and moves between the first and second edges;
(b) repeating act (a);
(c) repeating act (a); and
(d) applying suction in a narrow band that extends between the side edges and moves between the first and second edges;
wherein acts (a), (b), (c) and (d) are carried out successively with an end of a preceding act defining a beginning of a subsequent act.
7. The method of claim 6 wherein the movement of the cleaning solution narrow band in act (a) and the movement of the cleaning solution narrow band in act (b) are in opposite directions.
8. The method of claim 6 wherein the movement of the cleaning solution narrow band in act (a) and the movement of the cleaning solution narrow band in act (c) are in the same direction.
9. The method of claim 6 wherein the movement of the cleaning solution narrow band in act (a) and the movement of the suction narrow band in act (d) are in opposite directions.
10. The method of claim 6 , further comprising mechanically agitating the carpet segment during the movement of the suction narrow band in act (d).
11. The method of claim 6 , further comprising heating the liquid cleaning solution prior to applying the liquid cleaning solution in acts (a), (b) and (c).
12. The method of claim 6 wherein the acts (a) through (d) are carried out with an extraction machine.
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US13/718,040 US20130180055A1 (en) | 2012-01-18 | 2012-12-18 | Method of cleaning a carpet segment |
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US201261587934P | 2012-01-18 | 2012-01-18 | |
US13/718,040 US20130180055A1 (en) | 2012-01-18 | 2012-12-18 | Method of cleaning a carpet segment |
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US13/718,040 Abandoned US20130180055A1 (en) | 2012-01-18 | 2012-12-18 | Method of cleaning a carpet segment |
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EP (1) | EP2617342A1 (en) |
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CN114289377A (en) * | 2021-12-21 | 2022-04-08 | 秦文斌 | Miscellaneous fine hair removing equipment for bath mat |
US11382477B2 (en) | 2017-12-18 | 2022-07-12 | Techtronic Floor Care Technology Limited | Surface cleaning device with automated control |
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2012
- 2012-12-07 AU AU2012261594A patent/AU2012261594A1/en not_active Abandoned
- 2012-12-18 US US13/718,040 patent/US20130180055A1/en not_active Abandoned
- 2012-12-21 CA CA2799627A patent/CA2799627A1/en not_active Abandoned
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2013
- 2013-01-02 EP EP13150021.7A patent/EP2617342A1/en not_active Withdrawn
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US11122952B2 (en) | 2017-12-18 | 2021-09-21 | Techtronic Floor Care Technology Limited | Surface cleaning device with automated suction control |
US10820770B2 (en) * | 2017-12-18 | 2020-11-03 | Techtronic Floor Care Technology Limited | Surface cleaning device with triggerless fluid distribution mechanism |
US20190343360A1 (en) * | 2017-12-18 | 2019-11-14 | Tti (Macao Commercial Offshore) Limited | Surface cleaning device with triggerless fluid distribution mechanism |
US10813519B2 (en) * | 2017-12-18 | 2020-10-27 | Techtronic Floor Care Technology Limited | Surface cleaning device with triggerless fluid distribution mechanism |
US20190343359A1 (en) * | 2017-12-18 | 2019-11-14 | Tti (Macao Commercial Offshore) Limited | Surface cleaning device with triggerless fluid distribution mechanism |
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CN114289377A (en) * | 2021-12-21 | 2022-04-08 | 秦文斌 | Miscellaneous fine hair removing equipment for bath mat |
Also Published As
Publication number | Publication date |
---|---|
AU2012261594A1 (en) | 2013-08-01 |
CA2799627A1 (en) | 2013-07-18 |
EP2617342A1 (en) | 2013-07-24 |
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Legal Events
Date | Code | Title | Description |
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AS | Assignment |
Owner name: BISSELL HOMECARE, INC., MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HALEY, KEVIN;PRUIETT, JAMES W.;WARFIELD, CYNTHIA ANNE;SIGNING DATES FROM 20121128 TO 20121129;REEL/FRAME:029489/0231 |
|
AS | Assignment |
Owner name: BISSELL HOMECARE, INC., MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HALEY, KEVIN;PRUIETT, JASON W.;WARFIELD, CYNTHIA ANNE;SIGNING DATES FROM 20130304 TO 20130319;REEL/FRAME:030925/0087 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |