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Publication numberUS2554879 A
Publication typeGrant
Publication dateMay 29, 1951
Filing dateJul 12, 1949
Priority dateJul 12, 1949
Publication numberUS 2554879 A, US 2554879A, US-A-2554879, US2554879 A, US2554879A
InventorsJr Austin T Race
Original AssigneeRace & Race Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Dehumidifying device
US 2554879 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)


DEHUMIDIFYING DEVICE May 29, 1951 Filed July 12, i949 Patented May 29, 1951 DEHUMIDIFYING DEVICE Austin T. Race, Jr., Winter Haven, to Race &'Race, Inc., Winter corporation of Florida v v Application July 12, 1949, Serial No. 104,327

' 4 claims. (c1. 18a-'4.8)

This invention vrelates tondehumidiiers, and more particularly to small, portable dehumidii'lers particularly intended for v household `use in connection with basement recreation rooms, closets and the like, where excessive humidity vis particularly objectionable, resulting in mold and an unpleasant atmosphere.

An object of the invention is to provide a prac tical, commercial article which will be light in Weight, contain no moving parts or mechanical apparatus, and which can-be readily reconditioned by heating in an oven-at periodic intervals.

A further object of the invention is to provide animproved dehumidier of the type indicated, with an indicator positioned lin such a manner and in such relationship to theV other elements of the device as to assure lits maintaining its proper position, thus assuring the maximum eiliciency in the use of the device.

Further objects willmoreparticul'arly appear in thecourse of the following detailed descrip tion.

The invention consists in the novel construetion, arrangement and combinations of parts hereinafter more particularly described and claimed. Y

One sheet of drawings accompanies this specication as part thereof, in which like reference characters indicate like parts throughout.

In the drawings:

Figure 1 is a front elevation ofothe improved device, partly broken away to disclose its construction;

Figure 2 is a longitudinal transverse cross section taken on line 2 2 of Figure 1'; and

Figure 3 is a fragmentary longitudinal cross section illustrating a modied form of water absorbent material.

In accordance with the present invention a container I is formed preferably of woven metal wire having a natural resilience and in the preferred form illustrated this tubular container is formed from a rectangular piece of such woven Wire bent into tubular shapeland thus secured by means of spaced staples 2 embracing the overlapped margins to form a tube.

The bottom of the tube may be closed in any convenient manner, herein illustrated as compressing opposed sides of the tubes and securing them in close engagement by,.a channel-shaped clip 3 secured in position as by rivets 4.

Preferably, the bottom portion of the tubular container thus formed is lined with a sheet of aluminum or other metallic foil yI5 to prevent the sifting of powdered portions -of the water absorbent material out of the container.

Fla., assignor Haven, Fla., a

The container thus formed is filled substantially to its top with water absorbent material such as activated alumina in small particles, as indicated at 5, by reason of which the maximum surface area is. exposed and a free circulation of air permitted through the container.

A Optionally, the Water absorbent materiallmay be formed into uniform shaped pellets 5', as illustrated in Figure 3.

Adjacent the top of the container a transparent Vial IIl is positioned inverted, this vial being loaded with a suitable indicator material suchA as cobalt chloride having the characteristic of changing its color depending upon the` water content. In practice, a relatively small quantity of this material is charged into the bottomV of the vial I I and thus held by a packing of gauze, wick or other suitable material, a certain amount of the water absorbent material 5 being permissible, the idea being to permit access of moisture laden air to this indicator material. The vial is closed with a screw cap I2 having a vent I3, and aperipheral fin I4 preferably made of similar Awoven wire material as the container, is positioned on the vial II conveniently by engagement of the screw` cap I2 against the n and a shoulder Il den-ingthe neck portion of the vial.

In assembling the indicator vial II with the container I, it is inverted, as illustrated in the drawing, and the fin I4 disposed transversely of the container I being securely held by the particles of water absorbent material positioned below, above and around said fin, whereby the position of the vial is assured with relationship to the container I.

This central positioning of the vial II is further assured by the mode of closing the top or upper end of the container, which consists in compressing opposite sides 6 6 of the "tubular container I and by tucking inwardly the intermediate portions 1 'I. The overlapped edge portions of these side portions 6 6 and 'I I are clamped together by a channel-shaped clampv 8 which embraces one side of the triangular handle ID and is secured in position as by rivets 9.

By reason of the natural resiliency of the woven wire screen material, of which the container I is made, these in-turned sides 6 6 and folds I 'I exert a constant permanent pressure against the adjacent particles of water absorbent material 5 directing said particles against the upper end of the vial II, and thus assuring the permanent positioning of that portion ofthe vial containing the indicator material I6 with the transparent top of the vial exposed to observation through the screening material at the top of the container.

In use these devices will be hung in cupboards or small basement rooms to be protected and the indicator material will show at a glance on periodic inspection whether the water absorbent material 5 has reached its saturation point, at which time the devices can be removed and by baking in an oven for a relatively short time the moisture content will be expelled from the water absorbent material with a result in change in color of the indicator material to show dryness, and the device can be re-used repeatedly.

Water absorbent materials other than activated alumina and indicating materials other than cobalt chloride can, of course, be used, the only essential in connection with the latter being that they be of a character to change in color dependent upon the moisture absorbed.

Having thus described my invention, I claim:

1. Dehumidifier comprising a container, a .water absorbent material in small particles substantially filling the container, and a transparent indicator vial having a vent in one end, said container formed of woven metal screen in tubular {form with opposed portions of an end bent inwardly into contact, with the intermediate portions tucked inwardly and with the edges secured together, whereby an inward resilient pressure is directed against the particles of -water absorbent material at that end, and against the indicator vial centrally positioned with respect to the container at that end and with the closed end of said vial exposed and the end having a vent positioned inwardly.

2, Dehumidifier comprising a transparent foraminous container for water absorbent material in small particles, a transparent indicator vial having a vent at one end, `and means for anchoring said vial centrally of the mass of absorbent material with its closed end exposed within and at the end of the container and its vented end imbedded centrally of the mass of material, comprising a fin of foraminous material, said fin surrounding and extending `in' a plane perpendicular to the long axis of said vial,

4 whereby the vial is stabilized in position when it withsaid 1in is embedded in the water absorbent material.

3." Dehumidier comprising a tubular woven Wire container filled with Water absorbent material in small particles, a transparent vial containing material reflecting moisture content by color change, said Vial having a vent in one end and a peripheral iin extending in a -plane perpendicular to its long axis, said vial and n embedded in the particles of water absorbent material at the top end of the container with the top closed portion of the vial exposed, and the bottom vented end imbedded in the absorbent material said container having its opposite sides at the top endY compressed together and the intermediate portions turned inwardly to exert a compressive inward and downward pressure on the water absorbent particles surrounding the vial and a metallic foil liner interposed between the Water absorbent particles and the container at the bottom/of the latter.

4. De-humidifier comprising a foraminous container substantially filled with water absorbent material, an elongated transparent vial containing material reflecting moisture content by color change,l said vial having a vent in one end only and means for positioning said vial imbedded in said water absorbent material with the vent substantially central of the mass of said material and its opposite closed end exposed for inspection from the exterior of the container.


REFERENCES CITED The following references are of record in the .file of this patent:

UNITED STATES PATENTS Number Name Date 2,341,893 Baker Feb. 13, 1944 2,469,435 Hirsch May 10, 1949 FOREIGN PATENTS Number Y, Country Date 345,672 Great Britain Mar. 23, 1931

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2341893 *Feb 13, 1942Feb 15, 1944Baker John AAir drying device
US2469435 *Jan 17, 1944May 10, 1949Adler Hirsch AbrahamRegenerable desiccator
GB345672A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2649923 *Jan 4, 1951Aug 25, 1953Davison Chemical CorpHumidifier package with stitchedin suspension means and method for making same
US2732074 *Nov 10, 1952Jan 24, 1956 kuthe
US2994404 *Apr 28, 1959Aug 1, 1961Richard E SchifferlyMoisture absorbing device
US4177048 *May 26, 1978Dec 4, 1979Georgia-Pacific CorporationBearing breather desiccant device
US4684380 *Dec 13, 1985Aug 4, 1987Dragerwerk AgColorimetric indicator for the indication of the exhaustion of gas filters
US4756726 *Nov 20, 1986Jul 12, 1988Terry PeaceRegenerable dehumidifier
US6588345 *Apr 18, 2002Jul 8, 2003United States Sugar CorporationSystem for improving the flowability of hygroscopic materials from a hopper
US6716276 *Jun 25, 2002Apr 6, 2004Desiccare, Inc.Desiccant system
US6793713Jul 12, 2002Sep 21, 2004Shane A. KretsingerMethod for controlling moisture levels in cavities within buildings
US7108740Sep 1, 2004Sep 19, 2006Michael J. ArnoFlexible, inline, point-of-use air/gas filter/dryer
US7285156Sep 1, 2004Oct 23, 2007Michael J. ArnoInline, point-of-use air/gas dryness indicator
US7320725Mar 18, 2005Jan 22, 2008Illinois Tool Works Inc.Disposable cartridge air/gas dryer
US7323035 *May 1, 2003Jan 29, 2008Reckitt Benckiser (Uk) LimitedDehumidifying device
US7332013 *Sep 1, 2004Feb 19, 2008Arno Michael JCompressed air/gas-driven tool with integrated dryness indicator
US7361214Mar 18, 2005Apr 22, 2008Illinois Tool Works Inc.Disposable cartridge for air/gas dryer
US7726139 *Feb 24, 2006Jun 1, 2010Zeo-Tech Zeolith-Technolgie GmbhCooling sorption element with gas-impermeable sheeting
US7744684 *Apr 25, 2007Jun 29, 2010Chromatography Research Supplies, Inc.High capacity gas filter system with indicator
US7763104 *Sep 5, 2006Jul 27, 2010Visteon Global Technologies, Inc.Hydrocarbon trap assembly
US7857896Mar 15, 2007Dec 28, 2010Sud-Chemie Inc.Moisture absorbing product for use in containers
US8069875 *Jun 2, 2006Dec 6, 2011Nitto Denko CorporationVentilation member, ventilation member kit, and vented housing and vented tank using them
US20030205129 *Jul 12, 2002Nov 6, 2003Kretsinger Shane A.System and method for controlling moisture levels in cavities within buildings
US20050199403 *Sep 1, 2004Sep 15, 2005Arno Michael J.Compressed air/gas-driven tool with integrated dryness indicator
US20050201893 *Sep 1, 2004Sep 15, 2005Arno Michael J.Inline, point-of-use air/gas dryness indicator
US20050217486 *May 1, 2003Oct 6, 2005Reckitt Benckiser(Uk) LimitedDehumidifying device
US20050247201 *Mar 18, 2005Nov 10, 2005Arno Michael JDisposable cartridge for air/gas dryer
US20050268785 *Mar 18, 2005Dec 8, 2005Arno Michael JDisposable cartridge air/gas dryer
US20060191287 *Feb 24, 2006Aug 31, 2006Zeo-Tech Zeolith-Technologie Gmbh.Cooling sorption element with gas-impermeable sheeting
US20060222791 *Apr 1, 2005Oct 5, 2006Tsang-Hung HsuMoisture-permeable dehumidifying capsule
US20060230629 *Apr 16, 2005Oct 19, 2006Arno Michael JWearable disposable dryer with carrying strap and stowage accessory
US20070251391 *Apr 25, 2007Nov 1, 2007Chromatography Research Supplies, Inc.High capacity gas filter system with indicator
US20080053050 *Sep 5, 2006Mar 6, 2008Arruda Anthony CHydrocarbon trap assembly
US20090056361 *Mar 15, 2007Mar 5, 2009Sud-Chemie Inc.Moisture absorbing product for use in containers
US20090120949 *Jun 2, 2006May 14, 2009Nitto Denko CorporationVentilation Member, Ventilation Member Kit, and Vented Housing and Vented Tank Using Them
EP2085132A1 *Feb 1, 2008Aug 5, 2009Tsang-Hung HsuRegenerative dehumidifying bag
WO2003092860A1 *Apr 8, 2003Nov 13, 2003Kretsinger Shane AA system and method for controlling moisture levels in cavities within buildings
WO2005089223A2 *Mar 12, 2005Sep 29, 2005Arno Michael JCompressed air/gas-driven tool with integrated dryness indicator
WO2005089223A3 *Mar 12, 2005May 24, 2007Michael J ArnoCompressed air/gas-driven tool with integrated dryness indicator
WO2005092478A3 *Mar 18, 2005Nov 10, 2005Michael J ArnoDisposable cartridge for air/gas dryer
WO2007109063A3 *Mar 15, 2007Aug 14, 2008Sued Chemie IncMoisture absorbing product for use in containers
U.S. Classification96/117.5, 206/459.1, 206/204, 73/73
International ClassificationF24F3/14
Cooperative ClassificationF24F3/1411, B01D2259/455
European ClassificationF24F3/14C