US3324846A - Method and apparatus for drying fields - Google Patents

Method and apparatus for drying fields Download PDF

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US3324846A
US3324846A US409357A US40935764A US3324846A US 3324846 A US3324846 A US 3324846A US 409357 A US409357 A US 409357A US 40935764 A US40935764 A US 40935764A US 3324846 A US3324846 A US 3324846A
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covering
air
ground
moisture
beneath
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Albert A Smith
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C19/00—Design or layout of playing courts, rinks, bowling greens or areas for water-skiing; Covers therefor
    • A63C19/12—Removable protective covers for courts, rinks, or game pitches or the like
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
    • E01H1/0809—Loosening or dislodging by blowing ; Drying by means of gas streams

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  • This invention relates to the problem of maintaining large fields, such as playing fields, free from moisture during precipitation.
  • the main object of this invention is to provide a method and apparatus for maintaining large fields free from moisture due either to percipitation or to ground sweating.
  • Another object of this invention is to provide an apparatus for maintaining large fields free of moisture, employing a covering tarpaulin, during the use of which apparatus there is permitted thorough inspection of both the covering and the field, without the risk of damage to the covering.
  • FIGURE 1 is a perspective view, from above, of a playing field overlain with a covering or tarpaulin embodying the invention.
  • FIGURE 2 is a fragmentary elevational view taken on the line 22' of FIG. 1, the scale being considerably enlarged.
  • a fiexible, substantially air-impervious covering or tarpaulin 10 is placed over the area of ground that it is desired be protected from precipitation, either liquid (rain) or solid (snow, hail).
  • the covering 10 should be translucent or transparent. I perfer to use plastic polyethylene film of 6 mils thickness, at which thickness the polyethylene film has a slightly milky semitransparency which permits a high percentage of light to pass through the film. The weight of 6 mil film is approximately 28.8 pounds per 1000 square feet.
  • the covering is substantially the same size as the area to be covered and is simply spread evenly over the area without stretching.
  • a plurality of elongated sand bags 12 are arranged in spaced end-to-end relationship around the periphery 14 of the covering 10, slightly inwardly of the edge 16 so as to anchor the covering against the ground at intermittent locations around its periphery.
  • the word periphery is used herein to designate the peripheral band of covering material extending a short distance inwardly of the edge 16 of the covering 10.
  • an air-blower 18 mounted on a trailer 20 for ease of transportation.
  • a gas conduit 22 extends from the airblower 18 and runs under the edge of the covering 10 to a substantially central location 24 beneath the covering. Air is drawn through an air intake (not shown) of the airblower 18; and is blown by the air-blower 18 through the conduit 22 into the space between the covering 10 and the ground, the air being delivered centrally beneath the covering.
  • the air-blower 18 is a compressor in the broad sence of the word. Other compressors can be used in place of the air-blower 18, and any device capable of moving a gas against a backpressure is contemplated as within the ambit of this invention: engine exhausts, positive-displacement gas-pumps, various types of fans, etc.
  • the air being delivered may escape from beneath the edge 16 of the covering 10 only at the points around the periphery 14 which are intermediate of the locations at which the sand bags 12 anchor the covering against the ground.
  • the resistance to the escape of air from beneath the covering 10 at these points creates a slightly superatmospheric pressure beneath the covering. This resistance is increased by restricting, and decreased by enlarging, the size of the openings beneath the edge 16 of the covering 10 at the points intermediate the sand bags 12.
  • FIGURE 2 shows the sand bags 12 anchoring the periphery 14 of the covering 10 to the ground. Air enters the space beneath the covering via the conduit 22 and escapes via the openings 25.
  • An alternate or an auxiliary way of removing the air from beneath the covering 10 is by way of perforations in the covering itself.
  • small holes could be cut and fitted with flaps to prevent the entry of water but permit the escape of air.
  • the effect of the air passing between the covering and the ground, moving radially outwardly from the point 24 towards the peripheral openings 25, is that the air picks up the sweated moisture from the ground and conveys it to the outside atmosphere.
  • Gases other than air can of course be employed, the only requirement being that they be gases into which moistrue can evaporate, and thus capable of picking up moisture from the ground.
  • One alternative is an admixture of air and engine exhaust gases.
  • Access can be gained to the space between the covering and the ground by temporarily removing a few adjacent sand-bags from the periphery 14 of the covering 10 and crawling in beneath the edge 16. It is therefore possible, while my apparatus is operating, to inspect both the ground and the covering without walking on the covering, the light necessary for inspection being transmitted through the covering due to its semi-transparent characteristic. If a covering is employed which does not pass sufiicient light to permit a proper inspection to be made, flashlights or other artificial light sources may be taken beneath the covering.
  • Field size 100 yards X 100 yards. Area of covering 10,000 sq. yds. Weight of covering 2,590 lbs.
  • Apparatus for removing moisture from a playing field and for preventing precipitation from collecting thereon comprising a flexible, impervious covering to place on the field, a compressor for supplying compressed air to the space between the covering and the field into which air the moisture can evaporate whereby the air picks up moisture from the ground, and securing means to anchor the flexible covering against the ground at intermittent locations around the periphery of said covering and whereby the moisture-charged air may escape from beneath the covering at points intermediate of said locations.
  • a method of removing moisture from a playing field and of preventing precipitation from collecting thereon comprising the steps of placing a flexible, impervious covering on the field, securing the covering against displacement at intermittent locations around its periphery to leave unsecured spaces between the intermittent securing locations, continuously delivering to the space between the covering and the ground compressed air into which moisture can evaporate whereby the air picks up moisture from the ground, the air being delivered at such a rate and pressure as to raise the covering and space it from the ground inside the periphery of the covering, and continuously allowing the moisture-charged air to escape from the space between the covering and the ground through the unsecured spaces between the securing locations.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Drying Of Solid Materials (AREA)

Description

June 13, 1967 A. A. SMiTH METHOD AND APPARATUS FOR DRYING FIELDS Filed Nov. 6. 1964 FIG.
INVENTOR ALBERT A.SMITH MW ATTORNEYS United States Patent 3,324,846 METHOD AND APPARATUS FOR DRYING FIELDS Albert A. Smith, 2 Clearview Heights, Toronto, ()ntario, (Ianada Filed Nov. 6, 1964, Ser. No. 409,357 Claims priority, application Canada, Nov. 28, 1963, 890,074 6 Claims. (Cl. 126271.1)
This invention relates to the problem of maintaining large fields, such as playing fields, free from moisture during precipitation.
Since it is desirable that playing fields, such as football fields, be substantially dry during their use, the risk of precipitation prior to a scheduled game or event has been a source of concern. Up to now, the problem of precipitation collecting upon a playing fields has been overcome by placing thereover a large covering or tarpaulin, constructed of plastic or woven material.
This solution to one problem, however, gives rise to a second problem which has not thus far been overcome satisfactorily. Although no moisture is permitted by the covering to pass downwardly through it, neither may any moisture entrapped beneath the covering pass upwardly. On large fields whose upper layers are not entirely dry, the phenomenon of ground sweating often occurs, so called because moisture seeps or sweats upwardly to the surface of the ground. Unless prevented from doing so, this moisture will evaporate. However, a covering or tarpaulin will effectively prevent any such evaporation, with the result that moisture will gradually collect beneath the covering, causing the ground surface to become muddy and slippery despite the presence of the covering.
In the past it has thus been necessary, at intervals, to remove the covering for periods of up to half an hour, to permit the collected sweated moisture to evaporate. Of course, the covering is removed only during let-ups in the precipitation. Aside from the inconvenience of having to remove and relace a covering of a size often exceeding 60,000 square feet, this expedient involves the drawback that the covering cannot be removed during precipitation. Thus, for example, such a covering could not be used to advantage in the case of prolonged rain or drizzle.
Most coverings now in use are opaque, and another of their disadvantages is that when they cover a field it cannot be inspected to determine the degree of moisture at different locations unless the covering is removed. Using a translucent or even transparent plastic covering permits such inspection but requires that the covering be walked upon, with the consequent risk of damage to the covering.
The main object of this invention is to provide a method and apparatus for maintaining large fields free from moisture due either to percipitation or to ground sweating.
Another object of this invention is to provide an apparatus for maintaining large fields free of moisture, employing a covering tarpaulin, during the use of which apparatus there is permitted thorough inspection of both the covering and the field, without the risk of damage to the covering.
The foregoing and still further objects and advantages of the invention will become apparent from a study of the following specification, taken in conjunction with the accompanying drawings, in which like reference characters indicate corresponding parts throughout the several views, and in which:
FIGURE 1 is a perspective view, from above, of a playing field overlain with a covering or tarpaulin embodying the invention; and
FIGURE 2 is a fragmentary elevational view taken on the line 22' of FIG. 1, the scale being considerably enlarged.
As shown in FIG. 1, a fiexible, substantially air-impervious covering or tarpaulin 10 is placed over the area of ground that it is desired be protected from precipitation, either liquid (rain) or solid (snow, hail). The covering 10 should be translucent or transparent. I perfer to use plastic polyethylene film of 6 mils thickness, at which thickness the polyethylene film has a slightly milky semitransparency which permits a high percentage of light to pass through the film. The weight of 6 mil film is approximately 28.8 pounds per 1000 square feet. The covering is substantially the same size as the area to be covered and is simply spread evenly over the area without stretching.
A plurality of elongated sand bags 12 are arranged in spaced end-to-end relationship around the periphery 14 of the covering 10, slightly inwardly of the edge 16 so as to anchor the covering against the ground at intermittent locations around its periphery. The word periphery is used herein to designate the peripheral band of covering material extending a short distance inwardly of the edge 16 of the covering 10.
Situated outside of the area covered by the covering 10 is an air-blower 18 mounted on a trailer 20 for ease of transportation. A gas conduit 22 extends from the airblower 18 and runs under the edge of the covering 10 to a substantially central location 24 beneath the covering. Air is drawn through an air intake (not shown) of the airblower 18; and is blown by the air-blower 18 through the conduit 22 into the space between the covering 10 and the ground, the air being delivered centrally beneath the covering.
The air-blower 18 is a compressor in the broad sence of the word. Other compressors can be used in place of the air-blower 18, and any device capable of moving a gas against a backpressure is contemplated as within the ambit of this invention: engine exhausts, positive-displacement gas-pumps, various types of fans, etc.
The air being delivered may escape from beneath the edge 16 of the covering 10 only at the points around the periphery 14 which are intermediate of the locations at which the sand bags 12 anchor the covering against the ground. The resistance to the escape of air from beneath the covering 10 at these points creates a slightly superatmospheric pressure beneath the covering. This resistance is increased by restricting, and decreased by enlarging, the size of the openings beneath the edge 16 of the covering 10 at the points intermediate the sand bags 12.
FIGURE 2 shows the sand bags 12 anchoring the periphery 14 of the covering 10 to the ground. Air enters the space beneath the covering via the conduit 22 and escapes via the openings 25.
An alternate or an auxiliary way of removing the air from beneath the covering 10 is by way of perforations in the covering itself. In the case of initially imperforate plastic film, small holes could be cut and fitted with flaps to prevent the entry of water but permit the escape of air.
It is contemplated to set up beneath the covering 10, by adjusting the resistance to the escape of air, a pressure sufficiently super-atmospheric that the covering, except for its periphery 14, will be raised and spaced above the ground. The air beneath the covering will thus be slightly compressed.
Provided its relative humidity is less than air is a gas into which moisture can evaporate. The air that is blown through the conduit 22 into the space between the covering 15) and the ground will be of a relative humidity no higher that that of the atmosphere at the intake of the air-blower 18, and even were the relative humidity of the atmosphere to be 100%, the work done on the air as it is blown through the conduit 22 would raise the air temperature sufl'iciently to lower its relative humidity to a point below 100%.
The effect of the air passing between the covering and the ground, moving radially outwardly from the point 24 towards the peripheral openings 25, is that the air picks up the sweated moisture from the ground and conveys it to the outside atmosphere.
Gases other than air can of course be employed, the only requirement being that they be gases into which moistrue can evaporate, and thus capable of picking up moisture from the ground. One alternative is an admixture of air and engine exhaust gases.
Because of the super-atmospheric pressure underneath the covering 10, it balloons upwardly with its highest point near the centre. From this highest point, the covering slopes downwardly towards the edges 16 so that liquid precipitation will run off the covering at its edges 16. Most fields of the kind considered here have drainage facilities around their peripheries for disposing of this run-off. In the case of solid precipitation (snow, hail, etc.), it is contemplated to add to the air-blower 18 a heating element, for example a heating coil, for heating the air being delivered through the conduit 22 to a temperature sufliciently above that of the atmosphere that heat will be delivered to the space between the covering 10 and the ground at a rate suflicient to melt the solid precipitation collecting on the covering. The melted precipitation will then run off the covering in the same way as does rain.
Access can be gained to the space between the covering and the ground by temporarily removing a few adjacent sand-bags from the periphery 14 of the covering 10 and crawling in beneath the edge 16. It is therefore possible, while my apparatus is operating, to inspect both the ground and the covering without walking on the covering, the light necessary for inspection being transmitted through the covering due to its semi-transparent characteristic. If a covering is employed which does not pass sufiicient light to permit a proper inspection to be made, flashlights or other artificial light sources may be taken beneath the covering.
The specifications of a prototype apparatus constructed according to the invention are given below:
Field size 100 yards X 100 yards. Area of covering 10,000 sq. yds. Weight of covering 2,590 lbs.
Inside-outside pressure differential required to raise the covering Less than psi. Sandbags Approximately 225, each 6 ft. long x /2 ft. diameter. 1.2 cu. ft. of sand per bag 135 lbs. Total weight of sand tons. Air delivery rate 7800 c.f.m. for 100,000 sq.
With an ambient temperature of 30 F., under an average snow fall, pump 7800 c.f.m. per 100,000 sq. ft. at 45 F. to melt the snow.
What I claim as my invention is:
1. Apparatus for removing moisture from a playing field and for preventing precipitation from collecting thereon, comprising a flexible, impervious covering to place on the field, a compressor for supplying compressed air to the space between the covering and the field into which air the moisture can evaporate whereby the air picks up moisture from the ground, and securing means to anchor the flexible covering against the ground at intermittent locations around the periphery of said covering and whereby the moisture-charged air may escape from beneath the covering at points intermediate of said locations.
2. Apparatus as claimed in claim 1 in which a conduit extends from the compressor to a substantially central location beneath the covering thus to convey compressed air to the central location. 7
3. Apparatus as claimed in claim 1 in which the flexible covering consists of a transparent plastic material.
4. A method of removing moisture from a playing field and of preventing precipitation from collecting thereon, comprising the steps of placing a flexible, impervious covering on the field, securing the covering against displacement at intermittent locations around its periphery to leave unsecured spaces between the intermittent securing locations, continuously delivering to the space between the covering and the ground compressed air into which moisture can evaporate whereby the air picks up moisture from the ground, the air being delivered at such a rate and pressure as to raise the covering and space it from the ground inside the periphery of the covering, and continuously allowing the moisture-charged air to escape from the space between the covering and the ground through the unsecured spaces between the securing locations.
5. A method as claimed in claim 4, wherein the compressed air delivers heat to the space between the covering and the ground at a rate sufficient to melt solid precipitation collecting on the covering.
6. A method as claimed in claim 4 wherein the covering used is a transparent plastic material.
References Cited UNITED STATES PATENTS 1,131,378 3/1915 Hill 126-2711 2,910,994- 11/1959 Joy 522 3,035,590 5/1962 Helmers 522 3,159,165 12/1964 Cohen et al. 52-2 X 5 CHARLES J. MYHRE, Primary Examiner.

Claims (1)

1. APPARATUS FOR REMOVING MOISTURE FROM A PLAYING FIELD AND FOR PREVENTING PRECIPITATION FROM COLLECTING THEREON, COMPRISING A FLEXIBLE, IMPERVIOUS COVERING TO PLACE ON THE FIELD, A COMPRESSOR FOR SUPPLYING COMPRESSED AIR TO THE SPACE BETWEEN THE COVERING AND THE FIELD INTO WHICH AIR THE MOISTURE CAN EVAPORATE WHEREBY THE AIR PICKS UP MOISTURE FROM THE GROUND, AND SECURING MEANS TO ANCHOR THE FLEXIBLE COVERING AGAINST THE GROUND AT INTERMITTEN LOCATIONS AROUND THE PERIPHERY OF SAID COVERING
US409357A 1963-11-28 1964-11-06 Method and apparatus for drying fields Expired - Lifetime US3324846A (en)

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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818892A (en) * 1973-09-20 1974-06-25 H Kohorn System for removing snow and ice from and for subsequently drying an athletic playing surface
US3868825A (en) * 1973-01-26 1975-03-04 Jack R Boyce Apparatus for working frozen ground
US3875996A (en) * 1973-09-20 1975-04-08 Kohorn H Von System for comfortable, year-long use as an athletic playing surface, pedestrian mall, or the like
US4145821A (en) * 1977-07-18 1979-03-27 Schantz Robert I Rug dryer
US4571849A (en) * 1983-10-22 1986-02-25 Gardner Philip D Apparatus for removing liquid from the ground
US4640021A (en) * 1985-05-16 1987-02-03 Gullickson M Roy Hay drying apparatus
US5048202A (en) * 1990-04-06 1991-09-17 Shero William K Carpet dryer
WO1992019335A1 (en) * 1991-05-02 1992-11-12 Johnson Marshall Jeremy Ground cover
US5174048A (en) * 1990-04-06 1992-12-29 Shero William K Carpet dryer
US5257467A (en) * 1992-10-26 1993-11-02 Dri-Eaz Products, Inc. Carpet drying apparatus
NL1002764C2 (en) * 1996-04-02 1997-10-03 Hajjour Nour Eddine Weatherproof cover for open-air sports-ground, etc.
FR2788228A1 (en) * 1999-01-08 2000-07-13 Christian Lasaygues Storage case for tennis court cover includes long cylinder placed on flange and turned with crank driven by user
US20040255484A1 (en) * 1999-03-08 2004-12-23 Storrer Ernest J. System and method for removing moisture from water laden structures
US20050132596A1 (en) * 1999-03-08 2005-06-23 Storrer Ernest J. Moisture removal system
US20060254072A1 (en) * 2005-05-16 2006-11-16 Bourgault Industries Ltd. Apparatus and method for drying ground
US20080241780A1 (en) * 2007-03-30 2008-10-02 Michael Dyer Surface Warming Air Blanket
US20090139046A1 (en) * 2007-12-03 2009-06-04 Paul Kappos Air induction hard surface cleaning tool with an internal baffle
US20090288685A1 (en) * 2006-09-14 2009-11-26 Wolfe Kevin A Self-propelled extraction systems and methods
US7841087B1 (en) 2007-02-23 2010-11-30 Walker Jr Mark S Connector for use with inflatable tubing
USD684737S1 (en) 2011-08-31 2013-06-18 Dri-Eaz Products, Inc. Extractor housing
US8468716B1 (en) 2007-10-23 2013-06-25 Mary A. Walker Pressurized drying system
USD701661S1 (en) 2012-09-04 2014-03-25 Dri-Eaz Products, Inc. Extractor port housing
US20140099874A1 (en) * 2012-10-05 2014-04-10 Structural Group, Inc. System and method for internal pressurized gas drying of concrete
US9195238B2 (en) 2012-06-15 2015-11-24 Sapphire Scientific, Inc. Waste water vessels with multiple valved chambers, and associated systems and methods
US9351622B2 (en) 2012-09-04 2016-05-31 Sapphire Scientific Inc. Fluid extracting device with shaped head and associated systems and methods of use and manufacture
US10060641B2 (en) 2015-02-25 2018-08-28 Dri-Eaz Products, Inc. Systems and methods for drying roofs

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1131378A (en) * 1914-06-03 1915-03-09 Horace Hill Snow-removing machine.
US2910994A (en) * 1957-05-08 1959-11-03 Kenneth E Joy Inflatable inclosure
US3035590A (en) * 1958-10-31 1962-05-22 Du Pont Air supported structure
US3159165A (en) * 1961-04-21 1964-12-01 Plastimayd Corp Air-supported structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1131378A (en) * 1914-06-03 1915-03-09 Horace Hill Snow-removing machine.
US2910994A (en) * 1957-05-08 1959-11-03 Kenneth E Joy Inflatable inclosure
US3035590A (en) * 1958-10-31 1962-05-22 Du Pont Air supported structure
US3159165A (en) * 1961-04-21 1964-12-01 Plastimayd Corp Air-supported structure

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868825A (en) * 1973-01-26 1975-03-04 Jack R Boyce Apparatus for working frozen ground
US3818892A (en) * 1973-09-20 1974-06-25 H Kohorn System for removing snow and ice from and for subsequently drying an athletic playing surface
US3875996A (en) * 1973-09-20 1975-04-08 Kohorn H Von System for comfortable, year-long use as an athletic playing surface, pedestrian mall, or the like
US4145821A (en) * 1977-07-18 1979-03-27 Schantz Robert I Rug dryer
US4571849A (en) * 1983-10-22 1986-02-25 Gardner Philip D Apparatus for removing liquid from the ground
US4640021A (en) * 1985-05-16 1987-02-03 Gullickson M Roy Hay drying apparatus
US5048202A (en) * 1990-04-06 1991-09-17 Shero William K Carpet dryer
US5174048A (en) * 1990-04-06 1992-12-29 Shero William K Carpet dryer
WO1992019335A1 (en) * 1991-05-02 1992-11-12 Johnson Marshall Jeremy Ground cover
US5257467A (en) * 1992-10-26 1993-11-02 Dri-Eaz Products, Inc. Carpet drying apparatus
NL1002764C2 (en) * 1996-04-02 1997-10-03 Hajjour Nour Eddine Weatherproof cover for open-air sports-ground, etc.
FR2788228A1 (en) * 1999-01-08 2000-07-13 Christian Lasaygues Storage case for tennis court cover includes long cylinder placed on flange and turned with crank driven by user
US20040255484A1 (en) * 1999-03-08 2004-12-23 Storrer Ernest J. System and method for removing moisture from water laden structures
US20050132596A1 (en) * 1999-03-08 2005-06-23 Storrer Ernest J. Moisture removal system
US20100192400A1 (en) * 1999-03-08 2010-08-05 Storrer Ernest J Moisture removal system
US20070204478A1 (en) * 2005-05-16 2007-09-06 Robert Myerholtz Method for Drying Ground
US7243442B2 (en) * 2005-05-16 2007-07-17 Bourgault Industries Ltd. Apparatus for drying ground
US20060254072A1 (en) * 2005-05-16 2006-11-16 Bourgault Industries Ltd. Apparatus and method for drying ground
US20090288685A1 (en) * 2006-09-14 2009-11-26 Wolfe Kevin A Self-propelled extraction systems and methods
US8132831B1 (en) 2007-02-23 2012-03-13 Walker Jr Mark S Connector for use with inflatable tubing
US7841087B1 (en) 2007-02-23 2010-11-30 Walker Jr Mark S Connector for use with inflatable tubing
US20080241780A1 (en) * 2007-03-30 2008-10-02 Michael Dyer Surface Warming Air Blanket
US8468716B1 (en) 2007-10-23 2013-06-25 Mary A. Walker Pressurized drying system
US20090139046A1 (en) * 2007-12-03 2009-06-04 Paul Kappos Air induction hard surface cleaning tool with an internal baffle
US8510902B2 (en) 2007-12-03 2013-08-20 Dri-Eaz Products, Inc. Air induction hard surface cleaning tool with an internal baffle
US9066647B2 (en) 2007-12-03 2015-06-30 Dri-Eaz Products, Inc. Air induction hard surface cleaning tools with an internal baffle
USD684737S1 (en) 2011-08-31 2013-06-18 Dri-Eaz Products, Inc. Extractor housing
US9195238B2 (en) 2012-06-15 2015-11-24 Sapphire Scientific, Inc. Waste water vessels with multiple valved chambers, and associated systems and methods
USD701661S1 (en) 2012-09-04 2014-03-25 Dri-Eaz Products, Inc. Extractor port housing
US9351622B2 (en) 2012-09-04 2016-05-31 Sapphire Scientific Inc. Fluid extracting device with shaped head and associated systems and methods of use and manufacture
US20140099874A1 (en) * 2012-10-05 2014-04-10 Structural Group, Inc. System and method for internal pressurized gas drying of concrete
US9834482B2 (en) * 2012-10-05 2017-12-05 Structural Group, Inc. System and method for internal pressurized gas drying of concrete
US10060641B2 (en) 2015-02-25 2018-08-28 Dri-Eaz Products, Inc. Systems and methods for drying roofs
US10753628B2 (en) 2015-02-25 2020-08-25 Legend Brands, Inc. Systems and methods for drying roofs
US11686482B2 (en) 2015-02-25 2023-06-27 Legend Brands, Inc. Systems and methods for drying roofs

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