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EP0086857A1 - Verteilerpackung für die selbsttätige Abgabe einer bestimmten Menge eines gelösten Wirkmittels in den Spülkasten und das Toilettenbecken - Google Patents

Verteilerpackung für die selbsttätige Abgabe einer bestimmten Menge eines gelösten Wirkmittels in den Spülkasten und das Toilettenbecken Download PDF

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Publication number
EP0086857A1
EP0086857A1 EP82101353A EP82101353A EP0086857A1 EP 0086857 A1 EP0086857 A1 EP 0086857A1 EP 82101353 A EP82101353 A EP 82101353A EP 82101353 A EP82101353 A EP 82101353A EP 0086857 A1 EP0086857 A1 EP 0086857A1
Authority
EP
European Patent Office
Prior art keywords
tablet
water
dispensing device
solution
contain
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP82101353A
Other languages
English (en)
French (fr)
Inventor
Keith Woodruff
Arturo Adan Villamarin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Cyanamid Co filed Critical American Cyanamid Co
Priority to EP82101353A priority Critical patent/EP0086857A1/de
Publication of EP0086857A1 publication Critical patent/EP0086857A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
    • E03D9/02—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing
    • E03D9/03—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing consisting of a separate container with an outlet through which the agent is introduced into the flushing water, e.g. by suction ; Devices for agents in direct contact with flushing water
    • E03D9/033—Devices placed inside or dispensing into the cistern
    • E03D9/038—Passive dispensers, i.e. without moving parts
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
    • E03D9/02—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing
    • E03D2009/024—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing using a solid substance

Definitions

  • the present invention relates generally to a device for dispensing additives to the tank and bowl of a flushable toilet. More particularly, the invention relates to such a device having no moving parts, but which nevertheless dispenses a predetermined quantity of additive with each flush.
  • U.S. Patent No. 3,837,017 consists of a container having a number of perforations in the top containing solid calcium hypochlorite.
  • the device rests in the bottom of the tank where water enters the perforations and dissolves calcium hypochlorite which disperses throughout the tank water, which is then passed through the bowl upon flushing.
  • Such devices suffer from the disadvantage that there is no control over the amount of dissolution of the calcium hypochlorite.
  • there is a more or less continuous evolution of gases from the reaction of the calcium hypochlorite with the water The result is that the effectiveness of the device will be greater in the initial stages of use than at a later stage.
  • U.S. Patent No. 3,618,143 Another type of device is disclosed in U.S. Patent No. 3,618,143.
  • This device contains a large compartment containing the additive and an opening for admitting water, and a second smaller compartment containing an exit for water and dissolved additive, the compartments being joined below the level of both opening and exit, the exit being below the level of the opening.
  • Such a device will dispense a pre-determined amount of liquid with each flush.
  • this type of device has a disadvantage in that the solid additive is completely covered by water at all times and thus is in a continuous state of dissolution. This will result in faster use up time.
  • This invention comprises a device which is placed in a toilet tank, which device contains a water-soluble tablet of additive material intended to be used to treat the water in the toilet tank and/or bowl.
  • water-soluble is meant that the material will provide a solution when in contact with water over a period of time.
  • additives include disinfectants, deodorizers, cleaners, fragrances, dyes, stain inhibitors and the like, as well as additives which exhibit two or more of these properties.
  • the device of the instant invention permits a predetermined amount of additive solution to be discharged into the toilet tank and/or bowl from an outlet port of the device during each flush cycle.
  • the tablet is positioned in a cavity within the device such that water has a predetermined amount of contact therewith, it being understood that there must be some contact of the tablet with the water so that additive solution may be formed. Tablet positioning such that water has only minimum contact with the tablet would, of course, prevent excessive dissolution of the tablet and prolong the life of the additive compound, a desirable situation when the tablet is relatively very water-soluble. However, when the tablet is relatively less water-soluble, it is desirable that the water remain in contact therewith. Generally, the less water-soluble the tablet, the more thereof would be in contact with the water in order to create sufficient additive solution.
  • a second cavity is also provided in the device, said second cavity communicating with the tablet cavity and holding a solution of the dissolved additive material.
  • this second cavity is large in comparison to the predetermined quantity of additive solution which is delivered to the tank and/or bowl with each flush. This is an important, but optional, feature of the device which permits substantial uniformity of additive delivery to the toilet tank and/or bowl during each of numerous, closely-spaced flushes.
  • the size of the second cavity may be adjusted accordingly.
  • a pre- determined amount of water flows into the solution cavity and this predetermined amount of water causes a corresponding amount of additive solution to be discharged from the cavity and substantially into the tank.
  • the optimum amount of the additive solution may be transferred into the tank and/or bowl during the flush, and remain therein during the quiescent period before the next flush.
  • Other variables such as, for example, the size of the predetermined amount of additive solution to be delivered to the tank and/or bowl, may also be adjusted to provide optimum functioning of the device as desired.
  • the dispensing device of the application may be made of a plastic or other suitable material which is inert to the additive material.
  • rear panel 1 and front panel 2 are secured together at contacting points and this may be done in any suitable manner depending on the materials of construction, for example, by adhesive bonding, or thermal bonding of plastic materials.
  • the device basically comprises a flat rear panel 1 and a shaped front panel 2.
  • Front panel 2 has a first cavity 3 for containing an additive tablet 4 which rests on a shelf 5 formed at the base of cavity 3.
  • a second cavity 6 is formed in front panel 2 and positioned below cavity 3. Cavities 3 and 6 are in communication with each other at opening 7 along the edge of shelf 5.
  • An inlet port 8 is provided into an inlet standpipe cavity 9 and an outlet port 10 is provided from an outlet standpipe cavity 11.
  • Port 10 will preferably be above the level of shelf 5, so thatdeliveryof additive solution to the toilet tank during quiescent periods is substantially prohibited, and port 8 will be above the level of port 10.
  • Both standpipe cavities 9 and 11 communicate with cavity 6 at openings 12 and 13 respectively.
  • the upper surface 14 of opening 12, in Figure 3, is positioned slightly below the lower surface of shelf 5, as is the corresponding upper surface of opening 13. In such a construction, the water will be relatively minimally in contact with the tablet 4. During quiescent periods, a convex meniscus of water is created by capillary forces and a portion of the lower surface of tablet 4 is contacted thereby. When the toilet is being flushed, however, this contact is broken. It is understood that the relative positioning of tablet 4, and the upper surface of either opening 12 or 13 will control the amount of contact between the water and tablet 4.
  • the tablet 4 is contained in cavity 3 in such a manner that it has minimum contact with the inner walls thereof by means of indented ribs 15 provided on the front, rear and side walls of the cavity, as formed by rear panel 1 and front panel 2.
  • the lower ends of ribs 15 are above the top surface of shelf 5 (See Figure 3).
  • the dispensing device may be positioned in the toilet tank by suspending it with a rod, wire, chain or the like at perforation 16. If necessary, ballast weight may be provided in a ballast cavity 17 such as by a metal bar 18 or the like. Alternatively, the dispensing device could be clamped to a standpipe in the toilet tank by any suitable clamp means attached to the device, not shown. It is to be understood, however, that the particular means used to suspend the device in the toilet tank do not constitute a feature of the invention.
  • FIG. 5 A modification of the device is shown in Figures 5 and 6.
  • both panels 19 and 20 are shaped to form the cavities as described above, the construction and operation of the device being otherwise essentially similar to that of Figure 1.
  • the dispensing device having, for example, a tablet of a material which upon dissolution produces hypohalite ion, is placed in the toilet tank such that the level of water in the tank will be above inlet port 8 at the highest water level during quiescent periods, and below outlet port 10 at the lowest water level during a flush cycle.
  • water enters through ports 8 and 10 and fills cavity 6, coming in contact with the exposed lower surface of additive tablet 4 which begins to dissolve and form additive solution in cavity 6.
  • the exposed lower surface of tablet 4 may also be limited to a desired degree by an adjustment in the area of shelf 5.
  • a flush cycle as the water level lowers, it will reach the level of port 8, and pass below port 8.
  • additive solution begins to dis-. charge from cavity 6 and exit the device through outlet port 10, until the tank water level passes below the level of port 10.
  • the amount of discharge from the dispenser i.e., the predetermined amount, will be equal to the volume of standpipe 9, between the levels of ports 8 and 10. This, of course, may be determined by the difference in height between ports 8 and 10 and the cross-sectional area of the standpipe 9, all of which may be adjusted according to the additive compound being used and the amount of solution desired to be discharged during each flush cycle.
  • water After the water level reaches its lowest point, and begins to rise, water will enter port 10 and continue to fill the device until the water level rises above port 8.
  • the exposure of the tablet to water may be controlled as desired.
  • the erro- sion of the tablet may be regulated, and the life of the system adjusted.
  • FIG. 7-9 an alternative embodiment of the device of the present invention is shown wherein several optional features are exemplified, the construction and operation of the device being otherwise essentially similar to that of Figure 1.
  • an optional separate chamber 21, located above exit port 10, is incorporated into the device.
  • this chamber 21 is constructed so as to cause a second additive material, in cake form, placed therein to be delivered into the toilet tank continuously and into the bowl during every flush.
  • a chamber might be used, for example, when one desires to add an additive material which is incompatible with that contained in tablet 4 to the toilet tank and/or bowl.
  • tablet 4 comprises a disinfecting material
  • the additive cake material placed in chamber 21 is a dye and/or fragrance which functions as a use-up signal for the tablet 4 and/or to mask unpleasant odors.
  • optional chamber 21 is not critical, it being important only that there be means to admit water thereto and to allow discharge of additive solution therefrom, as represented by ports 22 and 23 in Figure 7.
  • ports 22 and 23 in Figure 7.
  • Figure 7 shows another optional modificaton of the device of the present invention - cavity 3 is tapered from the bottom toward the top thereof. It has been found that certain compositions of tablet 4 swell as they become wetted by the water. When this occurs, the tablet 4 may wedge itself between the ribs 15 and as the lower portion of the tablet 4 erodes, the tablet 4 will not drop down in the cavity to contact the water and create additive solution in cavity 6. By tapering the cavity 3, the tablet 4 will be forced down as it swells, thereby maintaining itself in contact with the water, as above described. Obviously, the degree of tapering will depend, inter alia, upon the shape of the tablet 4 and its composition characteristics.
  • Still another feature of the device shown in Figure 7 is the raising of the upper surface 14 of opening 12 in relation to shelf 5 on which tablet 4 rests. It is seen, as discussed above, that the adjustment of the height of said upper surface 14 (and/or the corresponding upper surface of opening 13, not shown) in relation to the lower surface of tablet 4 will permit more or less of the tablet to be exposed to the water, as desired.
  • a further optional feature of the device illustrated in Figure 7 is the inclusion, in cavity 6, of a means whereby any water-insoluble material, which may be generated by or otherwise result from the erosion of tablet 4, or which is present in the water supply and enters the device of the present invention, and settles to the bottom of cavity 6, is prevented or inhibited from building up in opening 13, outlet standpipe 11, and/or outlet port 10, and possibly clogging the device, thereby rendering it partially or totally ineffective.
  • such means is shown as a dam 24 which is formed in the floor of cavity 6. Said dam 24 preferably extends substantially the entire depth of cavity 6 as shown in Figure 8. The height of said dam may be varied depending, inter alia, upon the anticipated quantity of insoluble material to be held in solution cavity 6 thereby.
  • Figure 7 shows yet another feature which might be incorporated into the device of the present invention, namely a funnel-like trough 25 located in shelf 5, whereby water-insoluble material in cavity 3 may be more easily passed into cavity 6.
  • shelf 5 actually comprises the upper edges of adjoining troughs (not shown).
  • dam 24 is preferably placed such that substantially all water-insoluble material passing into cavity 6 would remain on the side of dam 24 opposite opening 13.
  • shelf 5 may be positioned above the base of cavity 3 and comprise a screen or screen-like in its entirety.
  • cavities 3 and 6 be, in essence, one cavity with shelf 5 being a screen or screen-like member supporting the tablet thereon.
  • a still further optional feature of the device of the present invention which is illustrated in Figure 7 is the incorporation of a plurality of ribs 26 on the upper surface of Shelf 5.
  • These ribs 26 serve both to allow water to pass under the bottom surface of tablet 4, thereby permitting more uniform erosion of the tablet, and also to permit easier removal of water-insoluble material from shelf 5.
  • other means such as a plurality of bumps might be used to keep the tablet 4 from resting flat on shelf 5. It is also seen that when shelf 5 is as discussed in the preceding paragraph, these ribs may not be necessary.
  • solution cavity 6 may be enlarged, for example, by squaring off the bottom edge thereof. Obviously, too, the cavity may simply be extended outward from the rear panel 1, as shown, or a combination of these may be used.
  • FIG. 7 Also shown in Figure 7 is the optional lowering of opening 13 relative to cavity 6.
  • additive solution from the lower portion of cavity 6 is discharged into the tank through standpipe 11 and outlet port 10.
  • the most saturated portion of additive solution excluding that small portion which is at the contact point with the tablet
  • such a positioning of opening 13 will permit optimum usage of additive solution with each flush.
  • such a - positioning of opening 13 causes water entering the device through outlet port 10 and discharge standpipe 11 during refilling to be advantageously mixed with the additive solution remaining in cavity 6.
  • volume ratio of the solution cavity 6 to that of discharge standpipe 11 be large so that water entering exit port 10 upon refilling of the tank will be substantially completely passed into cavity 6 to form additive solution and the predetermined amount discharged during a flush cycle will be substantially all relatively saturated additive solution, it being understood that some volumetric portion of outlet standpipe 11 may at certain times contain only water or be a very dilute solution of the additive compound. Obviously, there are practical limitations on this ratio, but, for example, by decreasing the volume of outlet standpipe 11, as by reducing its cross-sectional area, the foregoing objectives are substantially met.
  • FIG. 10 a still further embodiment of the present invention's device is shown.
  • the composition of tablet 4 is such as sodium dibromoisocyanurate, so that the reaction of water therewith evolves gas bubbles
  • the spaces 27 separating the cavity 3 from the inlet and outlet standpipes, 9 and 11, respectively be sufficiently narrow, most preferably paper-thin, so that any gas bubbles generated will be more quickly passed into one of said standpipes and out of inlet port 8 or exit port 10. In this manner, gas bubbles may be substantially eliminated as a variable impacting upon the functioning of the device.
  • an additive is . used in a device of the present invention comprising a mixture of 94 to 98% sodium dibromoisocyanuratel to 3% sodium chloride, and 1 to 3% sodium sulfate compressed into a 40 gram tablet.
  • the shelf is designed to expose 10% of the base area of the tablet.
  • the ports 8 and 10 are positioned in such a manner that the device discharges 1.3 cubic centimeters of solution during the flush cycle. This provides . an average concentration of hypobromite solution in the solution cavity having a volume of 7.3 cubic centimeters of 10,000 ppm, and, after flushing, about 2 ppm remains in the toilet bowl. In such operation the effective tablet life is approximately two months.
  • a discharge of 0.4 cubic centimeters may be obtained to provide 1 ppm of hypobromite solution in the toilet bowl after flushing.
  • Tablet formulations may be used in the dispensing device.
  • the mixture of compounds is pressed into a rectangular tablet weighing 40 grams and used in the dispensing device of the invention.
  • the listed mixture is pressed into a rectangular tablet as in Example II, and used in the-inventive dispens " ing device.
  • the tablet may be such that two or more separate additives may be incorporated thereinto, such as, for example, a dye and a disinfectant; or, two or more separate tablets, each containing one or more additives, may be made and stood side by side on shelf 5 of the device, the characteristics of each tablet being such that the rate of erosion will be equal and the tablets will exhaust substantially simultaneously.
  • the compositions of the separate tablets are desirably compatible in the sense that the additive materials sought to be discharged in the toilet tank and bowl therefrom will be at least substantially impervious to attack by one another.
  • a still further option is to have one tablet which will provide the principal desired activity, i.e., disinfecting, deodorizing or the like, and a second, thinner tablet placed on top thereof in cavity 3, such as a dye, so that when the principal tablet is exhausted, the second, thinner tablet will begin to produce solution in cavity 6 and such solution will be delivered into the toilet bowl, signaling to_.the customer that the device is no longer providing the principal desired activity.
  • a second, thinner tablet placed on top thereof in cavity 3, such as a dye

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
EP82101353A 1982-02-23 1982-02-23 Verteilerpackung für die selbsttätige Abgabe einer bestimmten Menge eines gelösten Wirkmittels in den Spülkasten und das Toilettenbecken Withdrawn EP0086857A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP82101353A EP0086857A1 (de) 1982-02-23 1982-02-23 Verteilerpackung für die selbsttätige Abgabe einer bestimmten Menge eines gelösten Wirkmittels in den Spülkasten und das Toilettenbecken

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82101353A EP0086857A1 (de) 1982-02-23 1982-02-23 Verteilerpackung für die selbsttätige Abgabe einer bestimmten Menge eines gelösten Wirkmittels in den Spülkasten und das Toilettenbecken

Publications (1)

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EP0086857A1 true EP0086857A1 (de) 1983-08-31

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EP82101353A Withdrawn EP0086857A1 (de) 1982-02-23 1982-02-23 Verteilerpackung für die selbsttätige Abgabe einer bestimmten Menge eines gelösten Wirkmittels in den Spülkasten und das Toilettenbecken

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128647A (en) * 1982-10-13 1984-05-02 Gabriel Oonagh Mary Dispensing device for flushing cistern
EP0204853A1 (de) * 1985-06-11 1986-12-17 Globol-Werk GmbH Vorrichtung zum Zusetzen von Desinfektions- und/oder anderen Mitteln in das Spülwasser eines WC
EP0217595A2 (de) * 1985-09-18 1987-04-08 John Ingram Peckston Abgabevorrichtung
US4937893A (en) * 1984-06-08 1990-07-03 The Procter & Gamble Company Passive-dosing dispenser employing captive internally-generated gas bubble to provide product isolation
US4939795A (en) * 1984-06-08 1990-07-10 The Procter & Gamble Company Method of isolating a product in a passive dosing dispenser by trapping internally-generated gas bubble
US8868421B2 (en) 2005-02-04 2014-10-21 Vocollect, Inc. Methods and systems for identifying errors in a speech recognition system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1193063A (en) * 1966-05-19 1970-05-28 Secto Co Ltd Means for Dispensing a Controlled Amount of a Deodorant and/or Disinfectant into a Flushing Cistern.
US3618143A (en) * 1968-05-29 1971-11-09 Reckitt & Colmann Prod Ltd Dispensing containers
US3778849A (en) * 1972-03-08 1973-12-18 Clorox Co Automatic dispensing apparatus
US4171546A (en) * 1977-10-21 1979-10-23 The Procter & Gamble Company Passive dosing dispenser
US4307474A (en) * 1980-05-28 1981-12-29 The Procter & Gamble Company Passive dosing dispenser exhibiting improved resistance to clogging

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1193063A (en) * 1966-05-19 1970-05-28 Secto Co Ltd Means for Dispensing a Controlled Amount of a Deodorant and/or Disinfectant into a Flushing Cistern.
US3618143A (en) * 1968-05-29 1971-11-09 Reckitt & Colmann Prod Ltd Dispensing containers
US3778849A (en) * 1972-03-08 1973-12-18 Clorox Co Automatic dispensing apparatus
US4171546A (en) * 1977-10-21 1979-10-23 The Procter & Gamble Company Passive dosing dispenser
US4307474A (en) * 1980-05-28 1981-12-29 The Procter & Gamble Company Passive dosing dispenser exhibiting improved resistance to clogging

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128647A (en) * 1982-10-13 1984-05-02 Gabriel Oonagh Mary Dispensing device for flushing cistern
US4937893A (en) * 1984-06-08 1990-07-03 The Procter & Gamble Company Passive-dosing dispenser employing captive internally-generated gas bubble to provide product isolation
US4939795A (en) * 1984-06-08 1990-07-10 The Procter & Gamble Company Method of isolating a product in a passive dosing dispenser by trapping internally-generated gas bubble
EP0204853A1 (de) * 1985-06-11 1986-12-17 Globol-Werk GmbH Vorrichtung zum Zusetzen von Desinfektions- und/oder anderen Mitteln in das Spülwasser eines WC
EP0217595A2 (de) * 1985-09-18 1987-04-08 John Ingram Peckston Abgabevorrichtung
EP0217595A3 (de) * 1985-09-18 1987-06-03 John Ingram Peckston Abgabevorrichtung
US8868421B2 (en) 2005-02-04 2014-10-21 Vocollect, Inc. Methods and systems for identifying errors in a speech recognition system
US9202458B2 (en) 2005-02-04 2015-12-01 Vocollect, Inc. Methods and systems for adapting a model for a speech recognition system

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Inventor name: VILLAMARIN, ARTURO ADAN