US3727840A - Dispersant container and dispenser - Google Patents

Dispersant container and dispenser Download PDF

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Publication number
US3727840A
US3727840A US00173049A US3727840DA US3727840A US 3727840 A US3727840 A US 3727840A US 00173049 A US00173049 A US 00173049A US 3727840D A US3727840D A US 3727840DA US 3727840 A US3727840 A US 3727840A
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container
reservoir
wick
dispersant
conical portion
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Expired - Lifetime
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US00173049A
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L Nigro
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Gillette Co LLC
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Gillette Co LLC
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • A61L9/04—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
    • A61L9/12—Apparatus, e.g. holders, therefor
    • A61L9/127—Apparatus, e.g. holders, therefor comprising a wick

Definitions

  • Appl' 173349 Container for dispersant material comprising first and second members adapted to be movably connected [52] U.S. Cl. ..239/43, 239/47, 239/57 together, the first member having wick means [51 Int. Cl.
  • the second member having therein a 239/ 309 sealed reservoir containing fluid dispersant material, the first member further including means for opening References Cited the reservoir, whereby upon relative movement of the UNITED STATESPATENTS first and second members toward each other the reservo1r opening means operates to open the reservoir, 3,587,968 6/1971 Hennart et al ..239/309 X permitting flow of the dispersant material therefrom 2,559,09l 7/1951 Reasenberg ..239/309 X onto the wick means.
  • Dispensers of the wick type are often used to release dispersants in gaseous or vaporous form into a room or other area, usually to establish a pleasant odor or a medically advantageous environment, or to control or eliminate insects, or the like.
  • such a dispenser reaches the consumer with a major portion of a wick means submerged in the dispersant material and a smaller portion of the wick means extending from a reservoir in which the dispersant is confined.
  • the protruding portion of the wick is usually covered with a cap to prevent undue loss of dispersant through evaporation.
  • dispersant enters the surrounding atmosphere in gaseous form.
  • the wick may be covered by a grid or screen, in which case two caps are required, one comprising the grid and a second to cover the grid to inhibit evaporation.
  • a further object of the invention is to conceal the wick means by an attractive perforated cover which, because of the dryness of the wick means, need not itself be covered, but which upon activation of the dispenser serves to facilitate passage of dispersant vapors from the wick means into the surrounding atmosphere.
  • a feature of the present invention is the provision of a container for dispersant material comprising first and second members, the first member having wick means therein as well as aperture means for permitting flow of vapors from the'wick means to the surrounding atmosphere, the second member having a sealed reservoir containing fluid dispersant material, the first member further having means engageable with the reservoir and operable upon engagement to open the reservoir to permit the dispersant therein to flow therefrom onto the wick means, the first and second members being adapted to be movably connected together, so that upon relative movement of the members toward each other the reservoir opening means engages the reservoir and oper-ates to open the reservoir.
  • FIG. 1 is a perspective view of one form of dispersant container and dispenser illustrative of an embodiment of the invention
  • FIG. 2 is a side elevational view showing the two components of the container just prior to attachment to each other, and showing one of the components in centerline section;
  • FIG. 3 is similar to FIG. 2 but shows the two components attached to each other;
  • FIG. 4 is similar to FIG. 3 but shows the components in operative position
  • FIG. 5 is an enlarged sectional view of a portion of the container.
  • the container includes a top member 2 and a bottom member 4.
  • the bottom member 4 is generally cup-shaped and has support means, such as legs 6, for supporting the container on a surface.
  • the bottom member includes a cylindrical wall 8 which is threaded to receive the top member 2.
  • a wick material 10 Disposed in the bottom member 4 is a wick material 10 which is in communication with the surrounding atmosphere by way of apertures 12 in the bottom member 4.
  • the bottom member 4 also includes a generally conical portion 14 provided with a groove 16, the conical portion 14 and groove 16 serving as an opening and conduit means, as will be fully described below.
  • the top member 2 includes a cylindrical projection 20, which is threaded for engagement with the threaded cylindrical wall 8 of the bottom member 4. Referring to FIG. 3, it will be seen that the top member 2 is adapted for threaded connection to the bottom member 4.
  • the top member 2 includes an internal bottom wall'22 which completely seals a chamber 24 in the top member, the chamber 24 containing a dispersant product 25, as for example, a room freshener, a medicament for inhaling, an insecticide, or the like.
  • the bottom wall 22 of the top member 2 includes a portion 26 disposed proximate to the pointed end of the conical portion 14.
  • the bottom member-'4 may be formed of plastic in a molding operation with the wall 8, the legs 6, conical portion 14 and apertures 12 all molded as an integral unit.
  • the top member may be formed by molding all but the wall 24, filling the top member 2 with the dispersant 25 and then molding the wall 22, thereby producing an inviolate chamber 24 containing dispersant 25.
  • top member 2 and bottom member 4 are threadedly connected, as shown in FIG. 3.
  • a tape member 28, or the like may be used to inhibit further rotation of the members 2, 4 relative to each other, or at least indicate when such tampering has taken place.
  • the tape 28 is removed, as shown in FIG. 1, and the top member 2 is screwed further into the bottom member 4.
  • the portion 26 of the wall 22 engages the pointed end of the conical portion 14. Further rotation of the top member causes the conical portion 14 to pierce the wall portion 26, permitting the dispersant 25 to flow along the groove 16 and to be absorbed by the wick material 10, as shown in FIG. 4, and particularly in FIG. 5.
  • the dispersant 25 absorbed by the wick material evaporates and passes through the apertures 12 into the surrounding atmosphere in vaporous or gaseous form.
  • the wick material 10 may be any porous material compatible with the dispersant in the chamber 24.
  • a plastic or rubber sponge-like material may be used, or a fibrous material, or other material suitable for the purpose.
  • Container for dispersant material comprising a molded plastic first member, said first member providing a generally cup-shaped chamber, wick means disposed in said chamber, said first member having aperture means for placing said wick means in communication with a surrounding atmosphere, a molded plastic second member adapted for threaded connection to said first member,said second member including as an integrally molded portion thereof a sealed reservoir for containing fluid dispersant material, and a conical portion molded integral with said first member and disposed for alignment with said second member, whereby upon progressive advancement of said threaded connection, said conical portion ruptures said reservoir permitting said dispersant to flow from said reservoir into said wick material to be dissipated to said atmosphere by way of said apertures.

Abstract

Container for dispersant material comprising first and second members adapted to be movably connected together, the first member having wick means disposed therein in communication with a surrounding atmosphere, the second member having therein a sealed reservoir containing fluid dispersant material, the first member further including means for opening the reservoir, whereby upon relative movement of the first and second members toward each other the reservoir opening means operates to open the reservoir, permitting flow of the dispersant material therefrom onto the wick means.

Description

United States Patent 1191 Nigro Apr. 17, 1973 [5 DISPERSANT CONTAINER AND 2,219,959 10 1940 Laidley ..239 43 DISPENSER 3,538,866 1 H1970 Gaines ..239/309 [75] Inventor: Louis V. Nlgro, Saugus, Mass. Prima'y Examiner M Henson wood Jr [73] Assignee: The Gillette Company, Boston, Assistant Examiner.lohn J. Love Mass. Attorney-Philip Colman et al.
[22] F1led: Aug. 19, 1971 ABSTRACT [21] Appl' 173349 Container for dispersant material comprising first and second members adapted to be movably connected [52] U.S. Cl. ..239/43, 239/47, 239/57 together, the first member having wick means [51 Int. Cl. ..B05b 17/00 disposed therein in communication with a surrounding [58] Field of Search ..239/37, 41, 42, 43, atmosphere, the second member having therein a 239/ 309 sealed reservoir containing fluid dispersant material, the first member further including means for opening References Cited the reservoir, whereby upon relative movement of the UNITED STATESPATENTS first and second members toward each other the reservo1r opening means operates to open the reservoir, 3,587,968 6/1971 Hennart et al ..239/309 X permitting flow of the dispersant material therefrom 2,559,09l 7/1951 Reasenberg ..239/309 X onto the wick means. 1,341,525 5/ l 920 Vericel ..239/43 1,818,684 8/l93l Blechman ...239/44 X 4 Clains, 5 Drawing Figures PATENTEDAPR 1 11915 3'. 127, 840
SHEET 1 OF 2 INVENTOR Louis V Nigro A f mrney By Max PATENTEDAPR 1 H975 3.727, 840
SHEET 2 [1F 2 INVENTOR Louis V Nigro Attorney DISPERSANT CONTAINER AND DISPENSER BACKGROUND OF THE INVENTION 1. Field of the Invention v This invention relates to containers and dispensers and is directed more particularly to a container for a dispersant, which container is easily converted into a dispenser of the wick type.
2. Description of the Prior Art Dispensers of the wick type are often used to release dispersants in gaseous or vaporous form into a room or other area, usually to establish a pleasant odor or a medically advantageous environment, or to control or eliminate insects, or the like.
Generally, such a dispenser reaches the consumer with a major portion of a wick means submerged in the dispersant material and a smaller portion of the wick means extending from a reservoir in which the dispersant is confined. The protruding portion of the wick is usually covered with a cap to prevent undue loss of dispersant through evaporation. When the cap is removed, dispersant enters the surrounding atmosphere in gaseous form. Thus, whenever the dispenser is in operation the wick means is exposed and by its nature not particularly attractive.
To overcome the unattractiveness of such device the wick may be covered by a grid or screen, in which case two caps are required, one comprising the grid and a second to cover the grid to inhibit evaporation.
Aside from appearance problems, whenever the wick means is subject to saturation by the dispersant material, there is almost invariably loss of dispersant by evaporation, creatinglimitations as to the shelf life of the dispensers.
SUMMARY OF THE INVENTION It is, therefore, an object of the invention to provide a dispenser of the wick type in which the wick and dispersant are kept separately until it is desired to use the dispenser, thus eliminating entirely shelf loss of contents.
A further object of the invention is to conceal the wick means by an attractive perforated cover which, because of the dryness of the wick means, need not itself be covered, but which upon activation of the dispenser serves to facilitate passage of dispersant vapors from the wick means into the surrounding atmosphere.
With the above and other objects in view, as will hereinafter appear, a feature of the present invention is the provision of a container for dispersant material comprising first and second members, the first member having wick means therein as well as aperture means for permitting flow of vapors from the'wick means to the surrounding atmosphere, the second member having a sealed reservoir containing fluid dispersant material, the first member further having means engageable with the reservoir and operable upon engagement to open the reservoir to permit the dispersant therein to flow therefrom onto the wick means, the first and second members being adapted to be movably connected together, so that upon relative movement of the members toward each other the reservoir opening means engages the reservoir and oper-ates to open the reservoir.
The above and other features of the invention, including various novel details of construction and combinations of parts, will now be more particularly described with reference to the accompanying drawings and pointed out in the'claims. It will be understood that the particular device embodying the invention is shown by way of illustration only and not as a limitation of the invention. The principles and features of this invention may be employed in various and numerous embodiments without departing from the scope of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS Reference is made to the accompanying drawings in which is shown an illustrative embodiment of the invention from which its novel features and advantages will be apparent.
FIG. 1 is a perspective view of one form of dispersant container and dispenser illustrative of an embodiment of the invention;
FIG. 2 is a side elevational view showing the two components of the container just prior to attachment to each other, and showing one of the components in centerline section;
FIG. 3 is similar to FIG. 2 but shows the two components attached to each other;
FIG. 4 is similar to FIG. 3 but shows the components in operative position; and
FIG. 5 is an enlarged sectional view of a portion of the container.
DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to FIG. 2, it will be seen that the container includes a top member 2 and a bottom member 4. The bottom member 4 is generally cup-shaped and has support means, such as legs 6, for supporting the container on a surface. The bottom member includes a cylindrical wall 8 which is threaded to receive the top member 2. Disposed in the bottom member 4 is a wick material 10 which is in communication with the surrounding atmosphere by way of apertures 12 in the bottom member 4. The bottom member 4 also includes a generally conical portion 14 provided with a groove 16, the conical portion 14 and groove 16 serving as an opening and conduit means, as will be fully described below.
The top member 2 includes a cylindrical projection 20, which is threaded for engagement with the threaded cylindrical wall 8 of the bottom member 4. Referring to FIG. 3, it will be seen that the top member 2 is adapted for threaded connection to the bottom member 4. The top member 2 includes an internal bottom wall'22 which completely seals a chamber 24 in the top member, the chamber 24 containing a dispersant product 25, as for example, a room freshener, a medicament for inhaling, an insecticide, or the like. The bottom wall 22 of the top member 2 includes a portion 26 disposed proximate to the pointed end of the conical portion 14.
The bottom member-'4 may be formed of plastic in a molding operation with the wall 8, the legs 6, conical portion 14 and apertures 12 all molded as an integral unit. The top member may be formed by molding all but the wall 24, filling the top member 2 with the dispersant 25 and then molding the wall 22, thereby producing an inviolate chamber 24 containing dispersant 25.
In assembly, the top member 2 and bottom member 4 are threadedly connected, as shown in FIG. 3. A tape member 28, or the like (FIG. 1 may be used to inhibit further rotation of the members 2, 4 relative to each other, or at least indicate when such tampering has taken place.
In operation, the tape 28 is removed, as shown in FIG. 1, and the top member 2 is screwed further into the bottom member 4. The portion 26 of the wall 22 engages the pointed end of the conical portion 14. Further rotation of the top member causes the conical portion 14 to pierce the wall portion 26, permitting the dispersant 25 to flow along the groove 16 and to be absorbed by the wick material 10, as shown in FIG. 4, and particularly in FIG. 5. The dispersant 25 absorbed by the wick material evaporates and passes through the apertures 12 into the surrounding atmosphere in vaporous or gaseous form.
The wick material 10 may be any porous material compatible with the dispersant in the chamber 24. A plastic or rubber sponge-like material may be used, or a fibrous material, or other material suitable for the purpose.
it is to be understood that the present invention is by no means limited to the particular construction herein disclosed and/or shown in the drawings, but also comprises any modifications or equivalents within the scope of the disclosure.
Having thus described my invention what I claim as new and desired to secure by Letters Patent of the United States is:
1. Container for dispersant material, said container comprising a molded plastic first member, said first member providing a generally cup-shaped chamber, wick means disposed in said chamber, said first member having aperture means for placing said wick means in communication with a surrounding atmosphere, a molded plastic second member adapted for threaded connection to said first member,said second member including as an integrally molded portion thereof a sealed reservoir for containing fluid dispersant material, and a conical portion molded integral with said first member and disposed for alignment with said second member, whereby upon progressive advancement of said threaded connection, said conical portion ruptures said reservoir permitting said dispersant to flow from said reservoir into said wick material to be dissipated to said atmosphere by way of said apertures.
2. The invention according to claim 1 in which said container includes as an integrally molded portion thereof support means for maintaining the remainder of said container removed from a surface on which said container rests.
3. The invention according to claim 1 including removable tape means attached to respective proximate edges of said first and second members when said members are threadedly connected, for inhibiting advancement of said threaded connection.
4. The invention according to claim 1 in which said conical portion is provided with a groove adapted to place the interior of said reservoir in communication with said wick means.
t r s

Claims (4)

1. Container for dispersant material, said container comprising a molded plastic first member, said first member providing a generally cup-shaped chamber, wick means disposed in said chamber, said first member having aperture means for placing said wick means in communication with a surrounding atmosphere, a molded plastic second member adapted for threaded connection to said first member,said second member including as an integrally molded portion thereof a sealed reservoir for containing fluid dispersant material, and a conical portion molded integral with said first member and disposed for alignment with said second member, whereby upon progressive advancement of said threaded connection, said conical portion ruptures said reservoir permitting said dispersant to flow from said reservoir into said wick material to be dissipated to said atmosphere by way of said apertures.
2. The invention according to claim 1 in which said container includes as an integrally molded portion thereof support means for maintaining the remainder of said container removed from a surface on which said container rests.
3. The invention according to claim 1 including removable tape means attached to respective proximate edges of said first and second members when said members are threadedly connected, for inhibiting advancement of said threaded connection.
4. The invention according to claim 1 in which said conical portion is provided with a groove adapted to place the interior of said reservoir in communication with said wick means.
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Cited By (49)

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Publication number Priority date Publication date Assignee Title
US4161284A (en) * 1978-02-09 1979-07-17 Rattan Horace E Slow diffuser-air scent
US4247042A (en) * 1978-02-22 1981-01-27 Globol-Werk Gmbh Vaporizer for insecticides and/or other volatile active substances
US4505429A (en) * 1982-03-26 1985-03-19 Airwick Industries, Inc. Dispenser for air treating material
US4526320A (en) * 1982-05-15 1985-07-02 Globol-Werk Gmbh Apparatus for vaporizing insecticides, perfumes and/or other volatile agents
US4558820A (en) * 1983-04-25 1985-12-17 S. C. Johnson & Son, Inc. Vapor-dispensing device
US4572375A (en) * 1984-11-26 1986-02-25 Baer Carl D Container for dispersant
US4630775A (en) * 1984-05-11 1986-12-23 Airwick Industries, Inc. Dispenser for releasing a volatile active substance
EP0212885A2 (en) * 1985-08-03 1987-03-04 Sterimatic Holdings Limited Tag assemblies
US4660764A (en) * 1985-04-26 1987-04-28 Reckitt And Colman Ag Device for permitting controlled emission of volatile substances
US4675504A (en) * 1986-06-20 1987-06-23 S. C. Johnson & Son, Inc. Electric fogger
US4739928A (en) * 1985-10-15 1988-04-26 The Drackett Company Air freshener dispenser
US4762275A (en) * 1985-08-09 1988-08-09 Societe International de Fabrication et de Diffusion de Produits Parfumes-I.P.P. Diffuser for volatile liquid fluids
US4917301A (en) * 1988-11-15 1990-04-17 International Flavors & Fragrances, Inc. Container with microporous membrane for dispensing vapor from volatile liquid
EP0381529A2 (en) * 1989-02-02 1990-08-08 Hercules Incorporated Air freshener
US4995555A (en) * 1988-11-14 1991-02-26 American Cyanamid Company Air treatment device and method
US5000383A (en) * 1990-03-09 1991-03-19 S. C. Johnson & Son, Inc. Vapor releasing device
US5497942A (en) * 1994-01-21 1996-03-12 W. L. Gore & Associates, Inc. Dispersant delivery system and method for producing and using same
US5875968A (en) * 1997-07-18 1999-03-02 S. C. Johnson & Son, Inc. Liquid air freshener dispenser device with nonporous capillary wicking function
USD419347S (en) * 1998-12-09 2000-01-25 S. C. Johnson & Sons, Inc. Liquid dispenser
US6029900A (en) * 1998-08-31 2000-02-29 Quinones; Jorge A. Air freshener device
USD423639S (en) * 1998-06-15 2000-04-25 S. C. Johnson & Son, Inc. Rim block dispensing device
WO2001001770A1 (en) * 1999-07-01 2001-01-11 S. C. Johnson & Son, Inc. Insecticidal liquid bait station
WO2002009778A1 (en) * 2000-07-27 2002-02-07 Globol Chemicals (Uk) Limited Apparatus for holding and dispensing an air modifying agent
US6662380B1 (en) 2002-08-29 2003-12-16 S.C. Johnson & Son, Inc. Dual action toilet rim mounted toilet bowl cleaner
US6691454B1 (en) * 2002-08-09 2004-02-17 John E. Conroy System for repelling garden slugs
US6722577B2 (en) * 2001-09-10 2004-04-20 Dobyns, Iii Simon L. Container for dispensing aromatic liquid
GB2400036A (en) * 2003-04-03 2004-10-06 Alan White Higginson Air freshener dispenser
US20050252074A1 (en) * 2004-05-11 2005-11-17 Duston Tyler D Bait stations
EP1649747A1 (en) * 2004-10-20 2006-04-26 Nimrod Israely A device for dispensing a substance to insects or mites
US20060130391A1 (en) * 2004-12-22 2006-06-22 Annette Livingston Repelling rodents
US20060191189A1 (en) * 2005-02-04 2006-08-31 Mayo Roy G Insecticidal activatable bait station
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US20070164126A1 (en) * 2003-09-02 2007-07-19 Colin Brown Volatile liquid disseminating apparatus
US20100314461A1 (en) * 2009-04-16 2010-12-16 Dana Paul Gruenbacher Volatile composition dispenser
US20110088310A1 (en) * 2008-05-08 2011-04-21 Christie Parker Crawling insect bait station with internal bait reservoir seal and simultaneously adjustable insect access port and crawlspace dimensions
US20110180621A1 (en) * 2009-04-16 2011-07-28 The Procter & Gamble Company Apparatus for delivering a volatile material
US20140034749A1 (en) * 2012-08-06 2014-02-06 Yung-Wei Ho Deodorant dispenser with an adjustable volatile area
EP2792239A1 (en) 2013-04-14 2014-10-22 Nimrod Israely Device for controlling insects
US20150102122A1 (en) * 2013-03-15 2015-04-16 Francis Ross LaRosa Apparatus and method for dispensing an animal attractant
US9205165B2 (en) 2012-10-22 2015-12-08 S.C. Johnson & Son, Inc. Volatile material dispensing system having an adjustable diffusion apparatus
US9327045B2 (en) 2013-10-22 2016-05-03 American Covers, Inc. Air freshener with porous membrane with leak pad and adjustable opening
US9468697B2 (en) 2009-04-16 2016-10-18 The Procter & Gamble Company Method for delivering a volatile material
US20170000102A1 (en) * 2015-05-18 2017-01-05 Ppg Industries Ohio, Inc. Device for Evaporative Delivery of Volatile Substance
US20180009596A1 (en) * 2016-07-11 2018-01-11 Sustained Released Technologies Inc. Liquid Release Device
US10182565B2 (en) * 2015-02-20 2019-01-22 Sterling International Inc. Insect repellent fixture and method
US10226655B2 (en) * 2016-01-30 2019-03-12 Mary M. Dwyer Fire extinguishing device
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US20230038073A1 (en) * 2020-01-30 2023-02-09 Manoj Kumar R Delivery system embedded trap device for attracting female and male fruit flies
US11911540B2 (en) 2009-04-16 2024-02-27 The Procter & Gamble Company Apparatus for delivering a volatile material

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Cited By (78)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4161284A (en) * 1978-02-09 1979-07-17 Rattan Horace E Slow diffuser-air scent
US4247042A (en) * 1978-02-22 1981-01-27 Globol-Werk Gmbh Vaporizer for insecticides and/or other volatile active substances
US4505429A (en) * 1982-03-26 1985-03-19 Airwick Industries, Inc. Dispenser for air treating material
US4526320A (en) * 1982-05-15 1985-07-02 Globol-Werk Gmbh Apparatus for vaporizing insecticides, perfumes and/or other volatile agents
US4558820A (en) * 1983-04-25 1985-12-17 S. C. Johnson & Son, Inc. Vapor-dispensing device
US4630775A (en) * 1984-05-11 1986-12-23 Airwick Industries, Inc. Dispenser for releasing a volatile active substance
US4572375A (en) * 1984-11-26 1986-02-25 Baer Carl D Container for dispersant
US4660764A (en) * 1985-04-26 1987-04-28 Reckitt And Colman Ag Device for permitting controlled emission of volatile substances
EP0212885A2 (en) * 1985-08-03 1987-03-04 Sterimatic Holdings Limited Tag assemblies
EP0212885A3 (en) * 1985-08-03 1987-11-11 Sterimatic Holdings Limited Tag assemblies
US4762275A (en) * 1985-08-09 1988-08-09 Societe International de Fabrication et de Diffusion de Produits Parfumes-I.P.P. Diffuser for volatile liquid fluids
US4739928A (en) * 1985-10-15 1988-04-26 The Drackett Company Air freshener dispenser
US4675504A (en) * 1986-06-20 1987-06-23 S. C. Johnson & Son, Inc. Electric fogger
US4995555A (en) * 1988-11-14 1991-02-26 American Cyanamid Company Air treatment device and method
US4917301A (en) * 1988-11-15 1990-04-17 International Flavors & Fragrances, Inc. Container with microporous membrane for dispensing vapor from volatile liquid
EP0381529A2 (en) * 1989-02-02 1990-08-08 Hercules Incorporated Air freshener
EP0381529A3 (en) * 1989-02-02 1990-10-10 Hercules Incorporated Air freshener
WO1991013637A1 (en) * 1990-03-09 1991-09-19 S.C. Johnson & Son, Inc. Vapor releasing device
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