EP0450687A1 - Dual liquid dispensing system - Google Patents
Dual liquid dispensing system Download PDFInfo
- Publication number
- EP0450687A1 EP0450687A1 EP19910200599 EP91200599A EP0450687A1 EP 0450687 A1 EP0450687 A1 EP 0450687A1 EP 19910200599 EP19910200599 EP 19910200599 EP 91200599 A EP91200599 A EP 91200599A EP 0450687 A1 EP0450687 A1 EP 0450687A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reservoir
- dispensing system
- pump
- switch
- over
- 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/08—Details
- B67D1/12—Flow or pressure control devices or systems, e.g. valves, gas pressure control, level control in storage containers
- B67D1/1245—Change-over devices, i.e. connecting a flow line from an empty container to a full one
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K5/00—Holders or dispensers for soap, toothpaste, or the like
- A47K5/06—Dispensers for soap
- A47K5/12—Dispensers for soap for liquid or pasty soap
Definitions
- the present invention is concerned with a dispenser of the kind for delivering aliquots of a liquid product from a reservoir by means of a pump which is manually operable.
- a dispenser of the kind for delivering aliquots of a liquid product from a reservoir by means of a pump which is manually operable.
- Such dispensers are often used in washrooms, etc. for dispensing small amounts of a liquid soap product for hand washing purposes.
- the US-patent 4,256,242 discloses a liquid soap dispenser comprising a housing, a collapsible bag for holding the liquid soap product and an operating lever or handle for actuating controlled amounts of soap from the bag.
- the collapsible bag is connected to an outlet by means of a flexible conduit which comprises a pump.
- dispensers offer hygiene and ease of handling for the user.
- one problem with this kind of dispensers resides in the fact that only a small amount of liquid soap may be dispensed at a time, due to the limited capacity of the pump.
- the amount is usually not more than 0.5 to 1 ml.
- the dual dispensing system for delivering aliquots of a liquid product comprising a housing, two reservoirs for the liquid product, each reservoir being connected to a pump which can be manually operated via actuating means, whereby there are provided means to automatically switch-over from one pump to the other pump when the liquid product in the first reservoir is exhausted, and vice versa.
- the reservoirs are collapsible and the switch-over means is actuated by the vacuum which is created in a reservoir when it is fully collapsed.
- the dispensing system according to the invention preferably comprises indicating means to indicate that a switch-over has occurred. It is especially preferred that these indicating means are visual indicating means.
- the pumps may be of any suitable kind, but bellow-type pumps are preferred. They may have a capacity of from about 0.1 to 10 ml, preferably from about 1 to 5 ml.
- FIGS 1 A,B and C show three schematic cross-sectional views of the dual dispensing system of the invention.
- the dual dispenser of the invention features a housing 1 surrounding two separate collapsible reservoirs 2,3 for holding the liquid soap product. Although there are two reservoirs, only one of them is operative at a time. In the depicted situation this is reservoir 2.
- Each reservoir is connected to its own pump 4,5 which is preferably a bellow-type pump.
- the bellow-type pumps are preferred because they are very compact and they can be used for larger volumes of up to 10 ml and more.
- Each of the pumps is also provided with an outlet nozzle 11,12 through which the liquid soap is to be dispensed.
- FIGS 2 A,B and C In Figures 2 A,B and C is shown what happens upon pressing the operating lever or press bar 13 which is situated at the front of the dispenser, as indicated by the arrow.
- the press bar is mounted on a hinge 14.
- the action of the press bar 13 is transferred on to a push rod 10 which is movable in a horizontal direction and acts against a spring.
- Attached to the push rod 10 there are provided two switch bars 8,9 which can be pivoted around two vertical axes 15,16 and which are kept apart by a spring means 17.
- a notch in one of the switch bars fits into either one of two holes in the other switch bar, thus constituting a bi-stable ensemble.
- the ensemble of the switch bars is at all times preferably in one of two possible states, corresponding to the states in which either one of the reservoirs is engaged for dispensing liquid soap.
- liquid soap it is to be understood that the dispenser is in fact suitable for any liquid, gel or paste-like product, for cleaning or sanitizing purposes or even for other products like food products, for instance mayonnaise, all within the scope of the present invention.
- This process may be repeated until the liquid soap product in reservoir 3 has run out and a switch-over to reservoir 2 occurs, analogous to the way described above for the switch-over from reservoir 2 to 3. If the empty reservoir 2 has been replaced in the mean time by a new reservoir, the supply of liquid soap from the dispenser is never interrupted. Because the switch-over occurs automatically, the user does not have to draw the attention of an operator if the liquid soap in one of the reservoirs runs out.
- the dispenser of the invention has a much lower probability to be empty at a particular moment in time, than the conventional liquid soap dispensers.
- the dispenser may be equipped with indicating means to indicate that a switch-over has occurred. The operator will then be able to determine whether one of the reservoirs has run out of liquid soap without having to open the dispenser.
- the indicating means preferably are visual indicating means.
- the indicating means may comprise two arms, each being connected to one of the tilting tables 6,7. As shown above, a tilting table will remain in the upward position when the corresponding reservoir is empty.
- the arms comprise a signalling part which is visible from the outside when the tilting table is in its upward position, and when one of the reservoirs is empty. When the empty reservoir is replaced by a new one, the corresponding tilting table is moved into its downward position and the signalling part will automatically disappear.
Abstract
Description
- The present invention is concerned with a dispenser of the kind for delivering aliquots of a liquid product from a reservoir by means of a pump which is manually operable. Such dispensers are often used in washrooms, etc. for dispensing small amounts of a liquid soap product for hand washing purposes.
- Various dispensers of this kind have been described in the literature. For example, the US-patent 4,256,242 (Christine) discloses a liquid soap dispenser comprising a housing, a collapsible bag for holding the liquid soap product and an operating lever or handle for actuating controlled amounts of soap from the bag. The collapsible bag is connected to an outlet by means of a flexible conduit which comprises a pump.
- These known type of dispensers offer hygiene and ease of handling for the user. However, one problem with this kind of dispensers resides in the fact that only a small amount of liquid soap may be dispensed at a time, due to the limited capacity of the pump. The amount is usually not more than 0.5 to 1 ml.
- Another problem which is commonly encountered is the fact that the dispenser may run out of soap unnoticed, which causes annoyance and hygiene risks for the user. Frequently checking by janitors will reduce the likelihood of a soap dispenser being out of soap for a long time, but this is not an economical solution.
- It has also been suggested in the European patent application 110,686 (Kimberley-Clark) to provide the soap dispenser with a window through which the reservoir level may be seen. This offers only a partial solution to the above mentioned problems, because it is not possible to determine when exactly the reservoir will run out of soap. It may even lead to a waste of liquid soap product if it becomes customary to replace the reservoirs before they are completely emptied.
- It is therefore an object of the present invention to provide a dispenser of the aforementioned kind, which does not possess these or other disadvantages.
- We have now found that these disadvantages can be overcome by the dual dispensing system for delivering aliquots of a liquid product, comprising a housing, two reservoirs for the liquid product, each reservoir being connected to a pump which can be manually operated via actuating means, whereby there are provided means to automatically switch-over from one pump to the other pump when the liquid product in the first reservoir is exhausted, and vice versa.
- Preferably, the reservoirs are collapsible and the switch-over means is actuated by the vacuum which is created in a reservoir when it is fully collapsed.
- The dispensing system according to the invention preferably comprises indicating means to indicate that a switch-over has occurred. It is especially preferred that these indicating means are visual indicating means.
- The pumps may be of any suitable kind, but bellow-type pumps are preferred. They may have a capacity of from about 0.1 to 10 ml, preferably from about 1 to 5 ml.
- The invention will now be better explained by way of the following preferred embodiment, and with reference to the accompanying drawings, in which:
- Figures 1 A,B and C show schematic cross-sectional views of a liquid soap dispenser according to the invention, as seen from the side, the front and from below, respectively;
- Figures 2 A,B and C show the same dispenser, upon pressing the operating lever;
- Figures 3 A,B and C show the same dispenser, upon releasing the operating lever;
- Figures 4 A,B and C show the same dispenser whereby the switch-over means switches from the first collapsible reservoir to the second; and
- Figures 5 A,B and C show the same dispenser after the switch-over has occurred.
- Figures 1 A,B and C show three schematic cross-sectional views of the dual dispensing system of the invention. The dual dispenser of the invention features a
housing 1 surrounding two separatecollapsible reservoirs reservoir 2. Each reservoir is connected to itsown pump - Each of the pumps is also provided with an
outlet nozzle - In Figures 2 A,B and C is shown what happens upon pressing the operating lever or
press bar 13 which is situated at the front of the dispenser, as indicated by the arrow. The press bar is mounted on ahinge 14. The action of thepress bar 13 is transferred on to apush rod 10 which is movable in a horizontal direction and acts against a spring. Attached to thepush rod 10 there are provided twoswitch bars vertical axes spring means 17. A notch in one of the switch bars fits into either one of two holes in the other switch bar, thus constituting a bi-stable ensemble. The ensemble of the switch bars is at all times preferably in one of two possible states, corresponding to the states in which either one of the reservoirs is engaged for dispensing liquid soap. - It should be mentioned here that although reference is made here to liquid soap, it is to be understood that the dispenser is in fact suitable for any liquid, gel or paste-like product, for cleaning or sanitizing purposes or even for other products like food products, for instance mayonnaise, all within the scope of the present invention.
- In each of the two above-mentioned states, on of the
switch bars bellow pumps - In Figures 3 A,B and C the
press bar 13 is released. Thepush rod 10 which acts against a spring, is then also released and will move in the direction indicated by the arrow. Theswitch bar 8 is engaged in the tilting table 6 and the horizontal movement of thepush rod 10 is thereby transformed into a vertical movement of thebellow pump 4. Thereby new liquid soap is sucked into the bellow pump fromreservoir 2. - When the
press bar 13 is pressed again, the process is repeated and a new aliquot of liquid soap is dispensed from theoutlet 11. This may continue until the liquid soap inreservoir 2 runs out. - In Figures 4 A,B and C the situation is shown wherein the
press bar 13 is returning to its outward position, after the last aliquot of liquid soap has been dispensed fromreservoir 2. Thebellow pump 4 is now unable to suck in new liquid soap fromreservoir 2 and remains in the compressed state. The tiling table 6 which is connected to thebellow pump 4 is now retained in the upward position. - Because the
push rod 10 is acting against a spring it will tend to return to the outward position. The notch on theswitch bar 8 is thereby pushed from the hole in the tilting table 6 and is pushed towardsswitch bar 9. The tilting table 6 is now uncoupled fromswitch bar 8. - As the
push rod 10 is travelling further to its outward position, the notch on theswitch bar 9 finds the hole in the tilting table 7 and engages in therein. This is shown in Figures 5 A,B and C. The bi-stable ensemble formed by theswitch bars reservoir 2 toreservoir 3 has taken place. Bellowpump 5 andreservoir 3 are now engaged, and upon pressing thepress bar 13, liquid soap is dispensed fromreservoir 3 viaoutlet 12. - This process may be repeated until the liquid soap product in
reservoir 3 has run out and a switch-over toreservoir 2 occurs, analogous to the way described above for the switch-over fromreservoir 2 to 3. If theempty reservoir 2 has been replaced in the mean time by a new reservoir, the supply of liquid soap from the dispenser is never interrupted. Because the switch-over occurs automatically, the user does not have to draw the attention of an operator if the liquid soap in one of the reservoirs runs out. - The dispenser of the invention has a much lower probability to be empty at a particular moment in time, than the conventional liquid soap dispensers. In order to further reduce the probability, the dispenser may be equipped with indicating means to indicate that a switch-over has occurred. The operator will then be able to determine whether one of the reservoirs has run out of liquid soap without having to open the dispenser.
- The indicating means preferably are visual indicating means. The indicating means may comprise two arms, each being connected to one of the tilting tables 6,7. As shown above, a tilting table will remain in the upward position when the corresponding reservoir is empty. The arms comprise a signalling part which is visible from the outside when the tilting table is in its upward position, and when one of the reservoirs is empty. When the empty reservoir is replaced by a new one, the corresponding tilting table is moved into its downward position and the signalling part will automatically disappear.
- It is emphasized that the dispenser shown in the Figures illustrates a only preferred embodiment of the invention and that various constructional alternatives will be immediately evident to the man skilled in the art, without departing from the scope of the present invention
Claims (8)
- A dual dispensing system for delivering aliquots of a liquid product, comprising a housing (1), two reservoirs (2,3) for the liquid product, each reservoir being connected to a pump (4,5) which can be manually operated via actuating means (6,7), whereby there are provided means (8,9,10) to automatically switch-over from one pump to the other pump when the liquid product in the first reservoir is exhausted, and vice versa.
- A dispensing system according to Claim 1, whereby the reservoirs (2,3) are collapsible and the switch-over means (8,9,10) is actuated by the vacuum which is created in a reservoir when it is fully collapsed.
- A dispensing system according to either preceding Claim, comprising indicating means to indicate that a switch-over has occurred.
- A dispensing system according to Claim 3, wherein the indicating means are visual indicating means.
- A dispensing system according to either preceding Claim, wherein the pumps have a capacity of about 0.1 to 10 ml.
- A dispensing system according to either preceding Claim, wherein the pumps have a capacity of 1 to 5 ml.
- A dispensing system according to either preceding Claim, wherein the pumps are bellow pumps.
- A reservoir adapted for use in the dual dispensing system according to any of the preceding claims.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB909007441A GB9007441D0 (en) | 1990-04-03 | 1990-04-03 | Dispenser for liquid product |
GB9007441 | 1990-04-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0450687A1 true EP0450687A1 (en) | 1991-10-09 |
EP0450687B1 EP0450687B1 (en) | 1993-07-28 |
Family
ID=10673759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91200599A Expired - Lifetime EP0450687B1 (en) | 1990-04-03 | 1991-03-19 | Dual liquid dispensing system |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0450687B1 (en) |
AU (1) | AU629115B2 (en) |
CA (1) | CA2038836C (en) |
DE (1) | DE69100193T2 (en) |
ES (1) | ES2043426T3 (en) |
FI (1) | FI93920C (en) |
GB (1) | GB9007441D0 (en) |
NO (1) | NO911276L (en) |
NZ (1) | NZ237623A (en) |
ZA (1) | ZA912463B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1920694A2 (en) * | 2006-11-09 | 2008-05-14 | Gotohti.Com Inc. | Vacuum switch multi reservoir dispenser |
US8091740B2 (en) | 2004-08-05 | 2012-01-10 | Stockhausen Gmbh | Dispenser, in particular, metering dispenser |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0109180A1 (en) * | 1982-11-10 | 1984-05-23 | PRODUCT RESEARCH & DEVELOPMENT | Liquid dispensing system and automatic selector therefor |
WO1989003803A1 (en) * | 1987-10-19 | 1989-05-05 | Scott Paper Company | Dual liquid cartridge dispenser |
-
1990
- 1990-04-03 GB GB909007441A patent/GB9007441D0/en active Pending
-
1991
- 1991-03-19 ES ES91200599T patent/ES2043426T3/en not_active Expired - Lifetime
- 1991-03-19 EP EP91200599A patent/EP0450687B1/en not_active Expired - Lifetime
- 1991-03-19 DE DE91200599T patent/DE69100193T2/en not_active Expired - Fee Related
- 1991-03-25 FI FI911417A patent/FI93920C/en not_active IP Right Cessation
- 1991-03-27 CA CA002038836A patent/CA2038836C/en not_active Expired - Fee Related
- 1991-03-28 NZ NZ237623A patent/NZ237623A/en unknown
- 1991-03-28 AU AU73953/91A patent/AU629115B2/en not_active Ceased
- 1991-04-02 NO NO91911276A patent/NO911276L/en unknown
- 1991-04-03 ZA ZA912463A patent/ZA912463B/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0109180A1 (en) * | 1982-11-10 | 1984-05-23 | PRODUCT RESEARCH & DEVELOPMENT | Liquid dispensing system and automatic selector therefor |
WO1989003803A1 (en) * | 1987-10-19 | 1989-05-05 | Scott Paper Company | Dual liquid cartridge dispenser |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8091740B2 (en) | 2004-08-05 | 2012-01-10 | Stockhausen Gmbh | Dispenser, in particular, metering dispenser |
EP1920694A2 (en) * | 2006-11-09 | 2008-05-14 | Gotohti.Com Inc. | Vacuum switch multi reservoir dispenser |
EP1920694A3 (en) * | 2006-11-09 | 2014-04-16 | Gotohti.Com Inc. | Vacuum switch multi reservoir dispenser |
Also Published As
Publication number | Publication date |
---|---|
NO911276D0 (en) | 1991-04-02 |
AU7395391A (en) | 1991-10-10 |
DE69100193D1 (en) | 1993-09-02 |
FI911417A (en) | 1991-10-04 |
DE69100193T2 (en) | 1993-11-11 |
EP0450687B1 (en) | 1993-07-28 |
NZ237623A (en) | 1993-07-27 |
FI93920C (en) | 1995-06-26 |
FI93920B (en) | 1995-03-15 |
ES2043426T3 (en) | 1993-12-16 |
NO911276L (en) | 1991-10-04 |
CA2038836C (en) | 1993-01-05 |
FI911417A0 (en) | 1991-03-25 |
CA2038836A1 (en) | 1991-10-04 |
AU629115B2 (en) | 1992-09-24 |
ZA912463B (en) | 1992-12-30 |
GB9007441D0 (en) | 1990-05-30 |
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