US20130326842A1

US20130326842A1 - Fluid Extraction Tool

Info

Publication number: US20130326842A1
Application number: US13/912,583
Authority: US
Inventors: Dan Pearson; Adam Dean Bearup; Eric Lynn Shark; Nathan Hammer; Richard J. Couch; Al Jesse Varney
Original assignee: Kaercher North America Inc
Current assignee: Kaercher North America Inc
Priority date: 2012-06-07
Filing date: 2013-06-07
Publication date: 2013-12-12

Abstract

A device for extracting fluid from a surface comprises a head assembly, a base and a plurality of nozzles arranged in a plurality of rows. The base is adapted to slide across a surface and an accelerator is in fluid communication with the base, the accelerator having a plurality of trumpets extending through the accelerator from a bottom surface of the accelerator to a top surface of the accelerator.

Description

This Non-Provisional patent application claims the benefit of priority from U.S. Provisional Patent Application No. 61/656,906, filed Jun. 7, 2012, the entire disclosure of which is hereby incorporated by reference in its entirety.

FIELD

The field of the present disclosure is directed to a fluid extraction tool for removing fluid from a surface.

BACKGROUND

Flooding, carpet cleaning and other circumstances occasionally leave fluid in and/or on carpets, hardwood floors, upholstery, or other surfaces. It is often desirable to remove such fluids as quickly as possible so as to prevent mildewing and other long-term damage, as well as to restore an affected area to full function and use. Along with fans and pumps, fluid extraction tools are often used to facilitate the removal of unwanted fluid from a floor or other surface.
Fluid extraction tools known in the art are characterized by various inefficiencies that limit the amount of fluid that can be extracted in a given amount of time, are difficult to carry when not in use and to maneuver when in use, and/or cannot be adjusted (or are difficult to adjust) to the proper size and configuration for a given operator's stature or a particular application.
The following describes a fluid extraction tool that improves over the prior art in at least these areas.

SUMMARY

According to varying embodiments of the present disclosure, a fluid extraction tool is disclosed. In an embodiment, a fluid extraction tool for extracting fluid from a surface comprises a head assembly symmetrical about a centerline thereof. The head assembly comprises a base having a substantially flat surface and a plurality of nozzles arranged in a plurality of rows, the substantially flat surface adapted to slide across the surface; an accelerator in fluid communication with the base, the accelerator having a plurality of trumpets extending through the accelerator from a bottom surface of the accelerator to a top surface of the accelerator, a perimeter of each of the plurality of trumpets having an ovoid shape and a bottom portion of each of the plurality of trumpets configured to align with at least one of the plurality of nozzles; and a cover in fluid communication with the accelerator, the cover configured to deflect fluid emerging from at least one of the plurality of trumpets toward an aperture in a top portion of the cover.
In another embodiment, the aperture of the fluid extraction tool is configured to slidably receive a distal end of a vacuum tube, and the fluid extraction tool further comprises an adjustment mechanism that in turn comprises a substantially tubular hinge adapted to slidably receive a proximal end of the vacuum tube; and a latch configured to tighten the hinge around a portion of the vacuum tube when closed.
In another embodiment, the fluid extraction tool still further comprises a handle assembly comprising two main grips; a cross bar connecting an end of each of the two main grips; and a pair of handle extensions, each handle extension connecting one of the two main grips to the adjustment mechanism.
In another embodiment of the fluid extraction tool, a highest point on the top surface of the accelerator is substantially aligned with an axis of the aperture.
In another embodiment of the fluid extraction tool, the base further comprises a sloped surface proximal to the substantially flat surface, such as behind the substantially flat surface (i.e. between the substantially flat surface and a user).
In another embodiment of the fluid extraction tool, an edge formed by an intersection of the substantially flat surface and the sloped surface is rounded.
In another embodiment of the fluid extraction tool, a perimeter of the substantially flat surface has rounded edges, and a perimeter of each of the plurality of nozzles has rounded edges.
In another embodiment of the fluid extraction tool, a ridge extends downward from the substantially flat surface along a perimeter around the plurality of nozzles.
In another embodiment of the fluid extraction tool, a spray bar and an agitating brush are removably attached to the head assembly.
In another embodiment of the fluid extraction tool, a hard floor base attachment is removably attached to the head assembly, the hard floor base attachment comprising one or more blades extending downward from the hard floor base attachment around a perimeter of the plurality of nozzles, the one or more blades configured to substantially seal off a portion of the surface underneath the plurality of nozzles during operation of the fluid extraction tool on a surface that is a hard floor.
In another embodiment of the fluid extraction tool, one or both of the accelerator and the cover are removably attached to the base and the accelerator, respectively.
In another embodiment of the disclosure, a fluid extraction tool comprises a vacuum hose port; and a vacuum surface comprising a plurality of nozzles arranged in a plurality of rows extending across substantially an entire width of the vacuum surface, each of the plurality of nozzles connected by a fluid flow path to the vacuum hose port.
In another embodiment of the fluid extraction tool, adjacent rows of the plurality of rows are staggered and the plurality of nozzles provide unbroken coverage across substantially an entire width of the vacuum surface.
In another embodiment of the fluid extraction tool, the vacuum surface further comprises a plurality of forced air vents, each of the plurality of forced air vents connected by a forced air duct to a forced air port.
In another embodiment of the fluid extraction tool, the vacuum surface forms a bottom surface of a shoe claw comprising a binding attached to the top surface of the shoe claw, the binding configured to secure a shoe to the fluid extraction tool, the binding further configured to allow a heel portion of the shoe or a heel portion of the binding to rotate on and off of the shoe claw.
In another embodiment of the fluid extraction tool, the shoe claw further comprises a vacuum release valve connected by a fluid flow path in the shoe claw to the vacuum hose port, the vacuum release valve positioned to open when the heel portion of the shoe or the heel portion of the binding rotates off of the shoe claw.
In another embodiment of the fluid extraction tool, a bottom surface of a mat comprises the vacuum surface and a top surface of the mat comprises the vacuum hose port.
In another embodiment of the fluid extraction tool, the bottom surface of a mat comprises the vacuum surface and a top surface of the mat comprises the vacuum hose port and the forced air port.
In another embodiment of the fluid extraction tool, an outer surface of a section of continuous track on a self-propelled machine comprises the vacuum surface and an inner surface of the section of continuous track comprises the vacuum hose port, the self-propelled machine comprising a power source; and a vacuum recovery system configured to produce a vacuum in a vacuum hose connected to the vacuum hose port and comprising storage for extracted fluid.
In another embodiment of the fluid extraction tool, the self-propelled machine further comprises a seat for an operator.
In another embodiment of the fluid extraction tool, a head assembly, symmetrical about a centerline thereof, comprises a base with a bottom surface that comprises the vacuum surface; an accelerator in fluid communication with the base, the accelerator having a plurality of trumpets extending through the accelerator from a bottom surface of the accelerator to a top surface of the accelerator, a perimeter of each of the plurality of trumpets having an ovoid shape and a bottom portion of each of the plurality of trumpets configured to align with at least one of the plurality of nozzles; and a cover in fluid communication with the accelerator and configured to deflect fluid emerging from at least one of the plurality of trumpets toward an aperture in the cover.
In another embodiment of the fluid extraction tool, the aperture is configured to slidably receive a distal end of a vacuum tube, and further comprises an adjustment mechanism comprising a substantially tubular hinge adapted to slidably receive a proximal end of the vacuum tube, the proximal end of the vacuum tube comprising the vacuum hose port; and a latch, the latch configured to tighten the hinge around a portion of the vacuum tube when closed.
In another embodiment, the fluid extraction tool further comprises a handle assembly comprising two main grips; a cross bar connecting an end of each of the two main grips; and a pair of handle extensions, each handle extension connecting one of the two main grips to the adjustment mechanism.
In another embodiment of the fluid extraction tool, one or both of the accelerator and the cover are removably attached to the base and the accelerator, respectively.
In another embodiment, a method of extracting fluid from a surface comprises providing a tool having a vacuum hose port and a vacuum surface, the vacuum surface comprising a plurality of nozzles arranged in a plurality of rows, each of the plurality of nozzles connected by a fluid flow path to the vacuum hose port; connecting a vacuum hose to the vacuum hose port; applying a vacuum to the vacuum hose port through the vacuum hose; and placing the vacuum surface of the tool on the surface.
In another embodiment of the method of extracting fluid from a surface, the vacuum surface further comprises a plurality of forced air vents connected by a forced air flow path to a forced air port, the method further comprising connecting a forced air hose to the forced air port; and applying forced air to the forced air port through the forced air hose.
In another embodiment of the method of extracting fluid from a surface, adjacent rows of the plurality of rows are staggered on the vacuum surface.
These and other advantages will be apparent from the disclosure of the invention(s) contained herein. The above-described embodiments, objectives, and configurations are neither complete nor exhaustive. As will be appreciated, other embodiments of the disclosure are possible using, alone or in combination, one or more of the features set forth above or described in detail below. Further, this Summary is neither intended to be nor should it be construed as being representative of the full extent and scope of the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute part of the specification, illustrate embodiments of the invention and together with the general description of the invention given above and the detailed description of the drawings given below, serve to explain the principle of the invention.

FIG. 1 is a perspective view of an embodiment of a fluid extraction tool according to the present disclosure;

FIG. 2 is an exploded perspective view of the head assembly of the fluid extraction tool shown in FIG. 1;

FIG. 3 is a cross-section of the head assembly of the fluid extraction tool shown in FIG. 1;

FIG. 4 is a top plan view of the head assembly of the fluid extraction tool shown in FIG. 1;

FIG. 5 is a bottom plan view of the head assembly of the fluid extraction tool shown in FIG. 1;

FIG. 6 is an exploded perspective view of the latch/adjustment mechanism of the fluid extraction tool shown in FIG. 1;

FIG. 7 is a side elevation view of another embodiment of a fluid extraction tool according to the present disclosure;

FIG. 8 is a cross section of another embodiment of a fluid extraction tool according to the present disclosure;

FIG. 9 is a bottom plan view of the embodiment of a fluid extraction tool shown in FIG. 8;

FIG. 10 is a perspective view of a shoe tool for fluid extraction according to another embodiment of the present disclosure;

FIG. 11 is a cross-section of the shoe tool for fluid extraction shown in FIG. 10;

FIG. 12 is a perspective view of a mat tool for fluid extraction according to the present disclosure;

FIG. 13 is a cross-section of a mat tool for fluid extraction according to the present disclosure.

FIG. 14 is a perspective of a bag for fluid extraction according to the present disclosure.

To assist in the understanding of certain embodiments of the present disclosure, the following list of components and associated numbering found in the drawings is provided:


#	Component

10	Fluid Extraction Tool
12	Handle Assembly
14	Main Grips
18	Cross Bar
22	Handle Extensions
26	Adjustment Mechanism
30	Latch
34	Hinge
38	Outer Hinge Cover
42	Hinge Insert
46	Head Assembly
50	Vacuum Tube
54	Flange
58	Bezel
62	Cover
66	Accelerator
70	Base
74	Aperture
82	Nozzle
86	Trumpet
94	Flat Forward Portion
98	Rear Sloped Portion
102	Rounded Edge
106	Rear Extension
130	Shoe Tool
134	Shoe Claw
138	Vacuum Hose
142	Vacuum Hose Port
146	Binding
154	Mat Tool
158	Forced Air Vent
162	Forced Air Port
166	Forced Air Hose
178	Vacuum Bags
182	Zip-Like Seal
186	One-Way Vacuum Hose Port
190	Vacuum Release Valve
198	Vacuum Surface

It should be understood that the drawings are not necessarily to scale. In certain instances, details that are not necessary for an understanding of the invention or that render other details difficult to perceive may have been omitted from these drawings. It should be understood, of course, that the present disclosure is not limited to the particular embodiments illustrated in the drawings.

DETAILED DESCRIPTION

Varying embodiments of the present disclosure are described herein with reference to the drawings. It is expressly understood that although FIGS. 1-14 depict several embodiments of a fluid extraction tool, the present disclosure is not limited to these specific disclosed embodiments.
As used herein, a nozzle is simply an opening through which a liquid or gas can pass; a trumpet is an elongated hole through which liquid or gas can pass; and an accelerator is a device comprising one or more trumpets.
FIG. 1 is a perspective view of one embodiment of a fluid extraction tool 10. Tool 10 comprises three main portions: handle assembly 12, adjustment mechanism 26, and head assembly 46. In an embodiment, handle assembly 12 comprises two main grips 14 that allow an operator to apply force to tool 10 using two hands, thus reducing operator fatigue and facilitating movement of tool 10 during use. Main grips 14 are positioned approximately shoulder-width apart for operator comfort. More specifically, main grips 14 are typically positioned between approximately 12 and 30 inches apart, preferably between approximately 15 and 26 inches apart, and more preferably between approximately 18 and 24 inches apart. Handle assembly 12 also comprises cross-bar 18, which connects the ends of each handle and provides an extra gripping surface for an operator of tool 10. Cross-bar 18 and/or main grips 14 can be used to hang the tool 10 on a shelf or rack, and can also be rested on a person's shoulder to reduce the effort required to carry tool 10. Preferably, main grips 14 and cross bar 18 are sufficiently strong to withstand the forces to which they will be subjected during use of tool 10, but are covered in a grip material (e.g. rubber, foam, plastic) to minimize the transmission of vibrations and other forces from tool 10 to an operator and to improve operator comfort.
In the embodiment provided in FIG. 1, handle extensions 22, which also form part of handle assembly 12, connect main grips 14 to adjustment mechanism 26. As with cross-bar 18, handle extensions 22 as shown provide an alternative gripping location to main grips 14. Adjustment mechanism 26 provides an adjustable interface with a proximal end of vacuum tube 50 on head assembly 46.
Referring to FIGS. 1 and 2, in head assembly 46, a distal end of vacuum tube 50 slides into aperture 74 adapted therefor on cover 62. The overlap between vacuum tube 50 and cover 62 strengthens the joint between those two components and transmits force therebetween. Cover 62 is configured with a fairing to provide a smooth flow path transition from cover 62 to vacuum tube 50, i.e., there is preferably no step or blunt edge at the inner interface of cover 62 and vacuum tube 50 that would interrupt fluid flow. Bezel 58 slides over vacuum tube 50 and abuts flange 54, which is located near the distal end of vacuum tube 50 and abuts cover 62. Ribs around the interface portion of cover 62, as well as flange 54 on vacuum tube 50, strengthen cover 62 and vacuum tube 50, respectively, and act as bosses to house inserts for bolting vacuum tube 50 and cover 62 together. Bolts or other fasteners are used to tighten bezel 58 and flange 54 against cover 62, thus creating a vacuum-tight seal between flange 54 and cover 62. Cover 62, in turn, is in fluid communication with accelerator 66 and base 70. In some embodiments, cover 62 is removably attached to accelerator 66, and accelerator 66 is removably attached to base 70. A proximal end of vacuum tube 50 comprises a vacuum hose port 142.
The angle between vacuum tube 50 (and therefore handle assembly 12) and cover 62 is typically between approximately thirty and seventy degrees (30°-70°), and preferably between approximately forty and sixty degrees (40°-60°), and is more preferably approximately forty-five degrees (45°). This angle keeps the operator's hands away from the operator's body and ensures that the main grips 14 are at a comfortable height for the operator.
To use fluid extraction tool 10, an operator connects a vacuum hose (not shown) to the vacuum hose port 142 on vacuum tube 50. The operator can run the vacuum hose over or under any portion of handle assembly 22, such that the vacuum hose exits away from the operator to the right or left. For example, the operator could run the vacuum hose over cross-bar 18 but under one of main grips 14, thereby keeping the vacuum hose away from the operator's feet and off to the operator's side. The operator applies a vacuum to the vacuum hose and thus to vacuum hose port 142, and places the base 70 of head assembly 46 on the surface from which fluid is to be extracted, so that nozzles 82 are proximal to the surface, allowing fluid to be extracted from the surface through nozzles 82.
During operation of fluid extraction tool 10, an operator can connect a belt harness to tool 10 to make pulling tool 10 easier. Also during operation of tool 10, head assembly 46 may impact bumps, steps, walls, or other obstructions. As shown in FIG. 6, Rubber hinge inserts 42 of adjustment mechanism 26 absorb some of the force of such impacts, thus reducing forces transmitted to the operator of tool 10. Rubber hinge inserts 42 also electrically isolate handle assembly 12, thereby protecting an operator from electric shock resulting from contact between any portion of head assembly 46 of tool 10 and a live electrical source. Notably, a preferred embodiment of tool 10 uses no electrical components or connections, such that it can be used in wet, flooded areas without increasing the risk of electrical shock.
Referring now to FIG. 2, in a preferred embodiment, cover 62 is formed of a clear material so that an operator of tool 10 can evaluate the fluid extraction performance of tool 10. Based on this evaluation, the operator can adjust the pace at which tool 10 is moved across the affected surface so as to maximize fluid extraction and thus minimize the time necessary to complete a given fluid extraction task.
As shown in FIGS. 2 and 5, the bottom surface of base 70 comprises a plurality of nozzles 82 arranged in a plurality of rows. Each of the plurality of rows extends across substantially an entire width of the vacuum surface, and each of the plurality of nozzles 82 is connected by a fluid flow path through head assembly 46 to aperture 74. In various embodiments, adjacent rows of the plurality of rows are generally staggered. This ensures that the plurality of nozzles 82 will provide unbroken coverage across substantially the entire width of the vacuum surface. In other words, if base 70 were to be moved forward or backward across a line on the surface, at least one nozzle 82 would pass over substantially every point on a length of the line extending between the nozzle(s) 82 that are most proximal to the sides of base 70.
The base 70 is designed to contact a fabric surface, and includes a series of vacuum ports or nozzles 82 through which fluid can be extracted from the surface being cleaned and which correspond to channels or trumpets 86 formed in the accelerator 66. In various embodiments, the base has a radius of curvature relative to being generally flat. The radius of curvature of the base is contemplated as being between approximately 40 and 60 inches in various embodiments. In one embodiment, the radius of curvature of the base is approximately 50.3 inches. The curvature facilitates movement of the device over the surface being cleaned. While various embodiments contemplate a flat base, and various Figures may depict a flat base, it will be expressly recognized that the present invention is not so limited.
Cover 62, accelerator 66, and base 70 are configured to achieve and maintain a high flow velocity within head assembly 46. Specifically, fluid is extracted from the affected surface through one or more rows of nozzles 82 in base 70. Extracted fluid moves through nozzles 82 of base 70 into trumpets 86 of accelerator 66, and then into the cavity between accelerator 66 and cover 62 before final removal through vacuum tube 50. Each interface between a nozzle 82 and the corresponding trumpet 86 is configured to ensure proper alignment so that no blunt edges protrude into the flow path due to misalignment. Similarly, the shape and size of the flow path described above is configured to minimize turbulence and its attendant inefficiencies. Also, in some embodiments, surfaces of base 70, accelerator 66, and cover 62 that are exposed to a fluid flow path are polished smooth so as to further minimize flow loss and maximize efficiency.
In an embodiment, three rows of nozzles 82 are arranged in a staggered pattern in base 70 so as to cover the full or almost the full width of head assembly 46 with overlapping coverage. The rows are straight in some embodiments and arcuate in others. A small, continuous ridge extends downward from the bottom of base 70 along a perimeter around nozzles 82, creating an overall seal for the extraction area and thus improving suction. Trumpets 86 of accelerator 66 are positioned similarly to nozzles 82 of base 70, so that each nozzle 82 can align with and interface with a corresponding trumpet 86.
The shape of accelerator 66, as well as the shape and arrangement of trumpets 86 in accelerator 66 and of nozzles 82 in base 70, control the flow pattern of fluid through head assembly 46 and enhance the ability of head assembly 46 to transfer fluid from the affected surface to vacuum tube 50 for removal. Trumpets 86 are narrow near their respective interfaces with nozzles 82 but expand upward, causing the fluid moving through trumpets 86 to combine into a single stream inside cover 62 for removal through vacuum tube 50. In a preferred embodiment, at least an upper perimeter of each trumpet 86 has an ovoid shape. As can be seen, the shape of nozzles 82 and trumpets 86 mimics the natural shape of water after a drop has hit a surface. The configuration of the various elements of head assembly 46 permits a high flow velocity to be maintained within head assembly 46, and also prevents fluid from deviating from the flow path and becoming trapped somewhere in head assembly 46. This, in turn, minimizes dripping of fluid from head assembly 46 after tool 10 is used.
Head assembly 46 prevents the formation of a wave of fluid in front of head assembly 46 as fluid extraction tool 10 is pushed across a wet surface. Specifically, the rounded perimeter of the bottom surface of base 70 channels fluid underneath base 70, where it is extracted through nozzles 82. This characteristic reduces unwanted movement of water or other unwanted fluid into a previously unaffected (i.e. dry) area.
For ease of maintenance, weep holes (not shown) in accelerator 66 and base 70 allow for the drainage of any water that becomes trapped in head assembly 46. If any such water cannot drain through the weep holes, or if cleaning or any other maintenance needs to be performed on head assembly 46, head assembly 46 can be disassembled. For normal cleaning, cover 62 can be removed from head assembly 46 without disassembling accelerator 66 from base 70, while for deeper maintenance or to replace one or more parts, accelerator 66 can be disassembled from base 70. In some embodiments, disassembly and reassembly of cover 62 and accelerator 66 are facilitated by the use of ridges on accelerator 66 that create a double seal with cover 62, such that a separate gasket is unnecessary.
In addition to facilitating maintenance, the use of a separate accelerator 66 and base 70 permits base 70 to be significantly thinner than it would be if those two components were integrated into a single piece. This results in a lighter, more easily handled overall design, and the reduced weight also means that fluid extraction tool 10 causes less damage to carpets, for example, than more traditional, heavier fluid extraction tool designs.
In some embodiments, a frame for mounting a light is attached to head assembly 46. This allows fluid extraction tool 10 to be used in no-light and low-light settings, including when electricity is not available to provide light. Additionally, head assemblies 46 having different sizes are provided in various embodiments with a fluid extraction tool 10, depending on a particular application. For example, when extracting fluid from tight, restricted areas, a smaller head assembly 46 is desirable, but when extracting fluid from spacious areas, a larger head assembly 46 is desirable.
Referring now to FIG. 3, the bottom of base 70 comprises a flat forward portion 94 in which nozzles 82 are disposed, and a gently sloped rear portion 98, with a rounded edge 102 between these two portions. By resting tool 10 on rounded edge 102 or sloped rear portion 98, suction between the surface and nozzles 82 is reduced or minimized and tool 10 can be easily moved across a surface. Further, an operator can rock tool 10 forward and backward on rounded edge 102 to better extract, for example, standing water by positioning one or more rows of nozzles 82 off of the affected surface but still in the standing water. Similarly, rounded edge 102 on the bottom of base 70 allows an operator to regulate the amount of seal between nozzles 82 and the working surface by rocking tool 10 back at varying degrees. Resting tool 10 fully on flat forward portion 94 of base 70 results in the strongest seal, while resting tool 10 fully on sloped rear portion 98 of base 70 results in the weakest seal. In embodiments, all edges on the bottom of base 70—including the perimeter of base 70 and the perimeter of each nozzle 82—are rounded to prevent base 70 from snagging on a surface obstruction, and to minimize the effort required to move tool 10 across a working surface.
In some embodiments, one or more wheels are attached to the rear portion of base 70 to reduce the force required to move fluid extraction tool 10 across the floor.
Referring still to FIG. 3, in certain embodiments nozzles 82 and trumpets 86 are sufficiently wide, even at their narrowest point, to not clog with small debris. The shape of nozzles 82 and trumpets 86 prevents material such as upholstery, curtains, and rugs from being sucked up into head assembly 46 and stopping operation. Tool 10 can also be used on rock surfaces, such as in a crawl space with a rock bottom, as long as the rocks are large enough to not be sucked into head assembly 46.
FIGS. 4 and 5 provide top and bottom views of head assembly 46, respectively. Additionally, the approximately rectangular shape of the perimeter of head assembly 46 is beneficial for extracting fluid from corners and next to walls. Further, tool 10 can be dragged not just straight forward and backward, but at one or more angles. This feature is particularly useful when extracting fluid next to, for example, a wall with a handrail or other obstruction that prevents straight operation.
Rear extensions 106 are provided in various embodiments for removing standing fluid from areas that are difficult to access. These extensions can be used as squeegees to pull standing fluid from an inaccessible or inconvenient area to an area where the fluid can be extracted more easily.
FIG. 6 provides an exploded view of adjustment mechanism 26. Handle extensions 22 are bolted or otherwise detachably connected to outer hinge covers 38, which in turn are detachably connected to hinge inserts 42 through hinge 34.
With latch 30 open, hinge 34 can accept a proximal end of vacuum tube 50. By sliding hinge 34 up or down vacuum tube 50 between the proximal end of vacuum tube 50 and bezel 58, fluid extraction tool 10 can be adjusted to an ideal height for operator comfort, or, alternatively, to an ideal height for the particular application in which tool 10 will be used. Rotational adjustment is also possible; while latch 30 is open, handle assembly 12 can be freely rotated relative to head assembly 46. For example, handle assembly 12 can be rotated ninety degrees (90°), one hundred eighty degrees (180°), or to any other angle in a clockwise or counterclockwise direction to best suit the operator's desires and the particular application at hand. For ease of adjustment, an operator can step on rear extensions 106 of head assembly 46, as shown in FIG. 2, while pulling, pushing, or rotating handle assembly 12 until tool 10 reaches the desired configuration. To reduce the space required for storing fluid extraction tool 10, hinge 34 can slide all the way down vacuum tube 50 until it contacts bezel 58. In this fully collapsed position, handle assembly 12 protects the proximal end of vacuum tube 10 from damage during transport and storage.
When latch 30 is closed, hinge 34 deflects handle extensions 22 slightly inward and exerts a compressive force around vacuum tube 50 so as to prevent any noticeable movement of vacuum tube 50 within hinge 34. In an embodiment, the inner surface of hinge 34 or hinge inserts 42 is coated in rubber to create high friction between hinge 34 of hinge inserts 42 and vacuum tube 50 when latch 30 is closed. When latch 30 is again opened, handle extensions 22 spring back to their original positions, thus pulling hinge 34 open.
Latch 30 is detachably affixed to hinge 34 such that during normal operation, latch 30 remains attached to hinge 34 in both the open and closed positions. This allows latch 30 to be easily open and closed for quick adjustments. In some embodiments, a catch (not shown) can be included in adjustment mechanism 26 to keep the latch from inadvertently becoming disconnected once closed.
A fluid extraction tool 10 as described herein can also be placed in a room or space with standing water and left unattended to extract the standing water.
Fluid extraction tool 10 can also be modified for specific applications. For example, a fluid extraction tool 10 in certain embodiments further comprises a hard floor base to maximize the effectiveness of tool 10 on hardwood floors, tile, concrete, and similar surfaces. A hard floor base uses blades to create a seal with the floor, allowing fluid extraction tool 10 to pull water from underneath a surface (i.e. underneath hardwood, for example) through cracks or spaces to the surface for extraction.
As shown in the embodiments provided in FIGS. 7, 8, and 9, a fluid extraction tool according to the present disclosure may be equipped to blow air on the wet surface so as to move fluid across or through the surface and toward the base 70, where it can be extracted through normal operation of the fluid extraction tool. Such embodiments are further advantageous in that the blowing action dries the top of the wetted surface, allowing fluid underneath the top of the surface to more easily propagate to the dry top where it can either evaporate or be extracted. In these embodiments, a fluid extraction tool according to the present disclosure comprises forced air vents 158 and a forced air port 162 adapted to receive a forced air hose 166.
In an embodiment, a fluid extraction tool according to the present invention, such as fluid extraction tool 10, can be adapted for carpet cleaning by adding a spray bar and, if desired, an agitating brush to head assembly 46. The spray bar is attached by hose to a cleaning agent source, and is used to spray cleaning agent on a carpet in advance of head assembly 46, which then extracts the cleaning agent and any dirt or dust particles picked up by the cleaning agent from the carpet. The agitating brush stimulates cleaning of the carpet after it has been sprayed with cleaning agent and before head assembly 46 extracts the cleaning agent.
In another embodiment, depicted in FIGS. 10 and 11, a fluid extraction tool according to the present disclosure is configured as a shoe tool 130 to be worn on an operator's feet. In this embodiment, a shoe claw 134 has a bottom vacuum surface 198 having a plurality of nozzles 82 arranged in a plurality of rows. In various embodiments, vacuum surface 198 includes some or all of the features of the bottom of base 70, described above. For example, in an embodiment, nozzles 82 of vacuum surface 198 are arranged in a staggered pattern on the bottom of shoe claw 134 so as to extend coverage to a significant portion of the area of vacuum surface 198. This ensures that suction will be applied to the full, or almost the full, area covered by shoe tool 130. In some embodiments, a small, continuous perimeter around this pattern of nozzles 82 on vacuum surface 198 creates an overall seal for the extraction area.
Shoe tool 130 includes a vacuum hose port 142 configured to removably receive a vacuum hose 138. Also, shoe claw 134 is sufficiently rigid and strong to support the weight of an operator. A binding 146 is disposed on the top of shoe claw 134 for securing an operator's shoe to shoe tool 130. In an embodiment, binding 146 comprises a strap under which an operator inserts the toe portion of a shoe, while in another embodiment, binding 146 comprises a full-length shoe platform rotatably attached to shoe claw 134, as shown in FIG. 11. Preferably, binding 146 allows the rear portion of an operator's shoe to rise off of the top surface of shoe claw 134 so as to facilitate walking In embodiments, shoe claw 134 includes a vacuum release valve 190 disposed underneath the heel of the operator's shoe. Vacuum release valve 190 is closed when a heel portion of the operator's shoe or of binding 146 rests on top of vacuum release valve 190, and is opened when the operator lifts the heel portion of the operator's shoe or of binding 146 off of shoe claw 134. Thus, when the operator lifts the heel portion of the shoe or of binding 146 to take a step, vacuum release valve 190 is opened and the suction between shoe tool 130 and the surface is released, allowing the operator to more easily move shoe tool 130 into a different position. Beneficially, shoe tool 130 keeps the operator's feet out of the water as long as the water is lower than the height of the top of shoe claw 134.
Shoe tool 130 is connected to a vacuum recovery system via vacuum hose 138. The vacuum recovery system is, in various embodiments, a portable, walk-behind or ride-on unit having a power source (i.e. a power cord, a battery, or a gasoline engine) and storage for extracted fluid (i.e., a fluid collection tank or trough). In other embodiments, the vacuum recovery system is a stationary unit, but still includes a power source and storage for extracted fluid. If portable, the vacuum recovery system is in certain embodiments configured to easily dock with a quick dump station to minimize down time when the extracted fluid storage is full, while in other embodiments the vacuum recovery system includes a pump unit capable of pumping collected fluid out of the extracted fluid storage through a discharge hose and into, inter alia, a sink or toilet.
Referring now to FIGS. 12 and 13, the present disclosure further contemplates a fluid extraction tool in the form of a mat tool 154. In this embodiment, a vacuum surface 198 forms the bottom surface of one or more large mats. As in other embodiments, vacuum surface 198 includes a plurality of nozzles 82, preferably arranged in a plurality of rows. In a preferred embodiment, nozzles 82 are staggered so as extend suction coverage to the full, or almost the full, area covered by mat tool 154. Nozzles 82 are in fluid communication with vacuum hose port 142 on the top of mat tool 154, such that fluid is extracted through nozzles 82 to vacuum hose port 142 and out through vacuum hose 138. Vacuum hose 138 is connected to a vacuum recovery source. In some embodiments, nozzles 82 are in fluid communication with multiple vacuum hose ports 142 in mat tool 154, which multiple vacuum hose ports 142 are in turn connected to multiple vacuum hoses 138. In operation, mat tool 154 is simply placed on an affected surface, after which the only operator intervention required is to relocate mat tool 154 as necessary to extract fluid from the entire target area of the affected surface.
In an embodiment such as that shown in FIG. 12, mat tool 154 includes forced air vents 158 located on the vacuum surface 198 of mat tool 154. In one embodiment, forced air vents 158 are arranged in an alternating fashion with nozzles 82, while in another embodiment they are surrounded by nozzles 82, and in still another embodiment they surround nozzles 82. Persons of ordinary skill in the art will recognize that other arrangements of forced air vents 158 are possible. Forced air vents 158 are connected by forced air ducts (not shown) to one or more forced air ports. Each of forced air ports is configured to receive a forced air hose, which provides forced air to forced air vents 158 through the forced air ports and forced air ducts. In operation, forced air blown through forced air vents 158 pushes fluid toward nozzles 82, and also dries the top of the affected surface such that fluid below the top of the affected surface will propagate upwards, where it can be more easily extracted or where it will evaporate or otherwise dissipate.
If multiple vacuum hose ports—whether from the same or different mat tools 154—are connected to the same vacuum recovery source, the vacuum recovery source applies a vacuum to each vacuum hose port 142 either simultaneously or alternately, depending on the particular embodiment. Alternating application of a vacuum to each of multiple vacuum hose ports 142 allows a stronger vacuum to be applied to each vacuum hose port 142 and also allows fluid to propagate to a recently dried area in between vacuum cycles, to be extracted on the subsequent vacuum cycle. Just as a vacuum is applied simultaneously in some embodiments or alternately in other embodiments to vacuum hose ports 142, so too is forced air applied simultaneously in some embodiments or alternately in other embodiments to forced air ports 162. Forced air vents 158 thus work together with nozzles 82 to enhance fluid extraction.
Another embodiment of the present disclosure is particularly beneficial when the affected surface must be collected and disposed. In this embodiment, the fluid extraction tool according to the present disclosure comprises a bagging machine stocked with a plastic roll. The bagging machine forms a bag by cutting a length of plastic from the plastic roll, folding it in half, and sealing (i.e. with heat) two of the three open sides. An operator then places pieces of the wet surface (i.e. wet carpet or wet carpet padding) into the bag. A vacuum hose is then inserted into the bag, which is partially sealed. After water is evacuated from the bag, the vacuum hose is removed and the bag is completely sealed. At this point, the bag is ready for disposal, and the process is repeated. This embodiment not only makes the pieces of the affected surface lighter and therefore easier to carry (i.e. to a trash receptacle), but also allows the pieces of the affected surface to be removed from their original location (i.e. a home or office) without dripping unwanted fluid as the bags are being removed, or while the bags are awaiting pickup (i.e. on a driveway, sidewalk, or street).
In another embodiment, depicted in FIG. 14, vacuum bags 178 include a zip-like seal 182 across the top, and also include a one-way vacuum hose port 186 to which a vacuum hose is attached for applying a vacuum to the inside of vacuum bag 178. The inner surfaces of vacuum bag 178 include ridges designed to channel fluid toward one-way vacuum hose port 186, which opens only when a vacuum is applied thereto. To use vacuum bags 178, pieces of the affected surface are placed inside vacuum bag 178. The top of vacuum bag 178 is then sealed using zip-like seal 182. A vacuum hose is attached to one-way vacuum hose port 186, and fluid inside vacuum bag 174 is extracted through vacuum hose 138. Once the extraction process is complete, the vacuum hose is disconnected from one-way vacuum hose port 186. Vacuum bags 178 provide the same benefits as the bags discussed above.
In still another embodiment, a fluid extraction tool according to the present disclosure, such as fluid extraction tool 10, or even just head assembly 46 of tool 10, can be attached to locomotive means, such as a ride-on machine or a walk-behind machine, to further reduce operator effort required to extract fluid from an affected surface.
In an embodiment especially adapted for covering large areas, a self-propelled tool has at least one continuous track that is used for propulsion in some embodiments but is not used for propulsion in other embodiments. The outer surface of one or more sections of continuous track comprises a vacuum surface such as the vacuum surfaces 198 described above. As in other embodiments, the vacuum surface includes a plurality of nozzles. In embodiments, the nozzles are arranged in a plurality of rows and/or in an alternating pattern so as to provide suction across the full, or almost the full, area covered by each such section. One or more vacuum hose ports are located on an inner surface of continuous track and are in fluid communication with the nozzles of the vacuum surface(s). Each vacuum hose port is connected to a vacuum hose that is, in turn, connected to a vacuum recovery system contained within the self-propelled tool. During operation of the self-propelled tool, the vacuum surface(s) on the continuous track alternately come into contact with the surface, from which fluid is extracted through the nozzles. Extracted fluid is channeled to the vacuum hose port, where it is removed through a vacuum hose to a vacuum recovery system.
In still another embodiment, a fluid extraction tool such as fluid extraction tool 10 or the self-propelled tool is adapted for robotic control, such that it can to cover a programmed path without operator intervention.
While various embodiments of the present disclosure have been described in detail, it is apparent that modifications and alterations of those embodiments will occur to those skilled in the art. However, it is to be expressly understood that such modifications and alterations are within the scope and spirit of the present disclosure, as set forth in the following claims. Further, the invention(s) described herein are capable of other embodiments and of being practiced or of being carried out in various ways. In addition, it is to be understood that the phraseology and terminology used herein is for the purposes of description and should not be regarded as limiting. The use of “including,” “comprising,” or “adding” and variations thereof herein are meant to encompass the items listed thereafter and equivalents thereof, as well as, additional items.

Claims

What is claimed is:

1. A fluid extraction tool for removing fluid from a surface, comprising:

a head assembly comprising a length, a width, a top surface and a bottom surface;

the top surface comprising an upstanding central portion with a maximum height disposed approximately at a midpoint of the width;

a plurality of ports distributed along the head wherein each of the ports comprise a pathway for fluid communication between the bottom surface and the top surface;

said ports being oriented to direct fluid toward the midpoint of the upstanding central portion.

2. The tool of claim 1, wherein a portion of the head assembly comprises a fluid impermeable material such that fluid flow is directed to the plurality of ports.

3. The tool of claim 1, wherein the plurality of ports are disposed symmetrically about at least one axis of the head assembly.

4. The tool of claim 1, further comprising a vacuum in fluid communication with the head assembly.

5. The tool of claim 1, wherein the plurality of ports comprise nozzles for at least one of directing and accelerating fluid toward the upstanding central portion.

6. The tool of claim 1, further comprising a bottom cover portion interconnected to the head assembly, the bottom cover portion comprising a plurality of inlets and wherein each of said plurality inlets corresponds to one of the plurality of ports.

7. The tool of claim 1, wherein the upstanding central portion comprises a convex protrusion.

8. A fluid extraction tool for removing fluid from a surface, comprising:

the top surface comprising an upstanding central portion;

said ports being oriented to direct fluid toward the upstanding central portion;

a base portion disposed proximal the bottom surface of the head assembly, the base portion comprising a plurality of nozzles arranged in at least one of a plurality of rows and a plurality of columns; and

a cover portion provided proximal the top surface and comprising a second upstanding central portion corresponding to the upstanding central portion of the head assembly.

9. The tool of claim 8, wherein each of the plurality nozzles are aligned with at least one of the ports of the head assembly.

10. The tool of claim 8, wherein the base portion, the head assembly, and the cover portion are selectively interconnected by at least one fastener.

11. The tool of claim 8, wherein the cover portion comprises at least aperture for fluid communication with a vacuum.

12. The tool of claim 8, further comprising a vacuum in fluid communication with the tool.

13. The tool of claim 8, wherein the nozzles comprise substantially circular openings and wherein the ports comprise non-circular structures adapted to direct fluid toward the upstanding central portion.

14. A fluid extraction tool for removing fluid from a surface, comprising:

a head assembly having a base and a plurality of nozzles arranged in at least one of a plurality of rows and a plurality of columns;

a plurality of trumpets provided in fluid communication with the plurality of nozzles for directing a fluid to a top surface of the head assembly, a perimeter of each of the plurality of trumpets having an ovoid shape and a bottom portion configured to align with at least one of the plurality of nozzles; and

a cover portion comprising an upstanding central portion in fluid communication with the plurality of trumpets.

15. The tool of claim 14, wherein the cover portion comprises an aperture for conveying fluids therethrough, the aperture provided in fluid communication with a vacuum source.

16. The tool of claim 14, wherein the upstanding central portion comprises a convex protrusion.

17. The tool of claim 14, wherein head assembly, the base and the cover portion are selectively interconnected by at least one fastener.

18. The tool of claim 14, wherein the plurality of trumpets direct and accelerate fluid toward the upstanding central portion.

19. The tool of claim 14, wherein each of the plurality of nozzles are provided in alignment with one of the plurality of trumpets.

20. The tool of claim 14, wherein the head assembly comprises a removable assembly.