CA2753764A1 - Pressurized liquid dispensing system - Google Patents
Pressurized liquid dispensing system Download PDFInfo
- Publication number
- CA2753764A1 CA2753764A1 CA 2753764 CA2753764A CA2753764A1 CA 2753764 A1 CA2753764 A1 CA 2753764A1 CA 2753764 CA2753764 CA 2753764 CA 2753764 A CA2753764 A CA 2753764A CA 2753764 A1 CA2753764 A1 CA 2753764A1
- Authority
- CA
- Canada
- Prior art keywords
- liquid
- container
- dispensing system
- liquid dispensing
- valve
- 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.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
- B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
- B05B9/0805—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material
- B05B9/0838—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material supply being effected by follower in container, e.g. membrane or floating piston, or by deformation of container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/0055—Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents
- B65D83/0077—Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents moves by a spring-like mechanism
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Description
PRESSURIZED LIQUID DISPENSING SYSTEM
This invention is in the field of liquid dispensing systems and in particular a dispensing system for dispensing liquid from a container under pressure.
BACKGROUND
A wide range of liquids, for example lubricating liquid, paint, insect repellant, personal hygiene products such as deodorant, and the like are sold in dispensing containers which include some means for expelling the liquid from the container under some pressure. A
manual pump can be provided for example, but the pump must be constantly operated by a linger to maintain a spray.
Aerosol spray cans contain a propellant gas, usually the vapor of a liquid with boiling point slightly lower than room temperature. Inside the pressurized can, the vapor can exist in equilibrium with its bulk liquid at a pressure that is higher than atmospheric pressure (and able to expel the liquid product), but not dangerously high. As gas escapes, it is immediately replaced by evaporating liquid. A valve at the top of the can is connected to a tube extending down to the bottom of the can. Pressure in the top of the can forces the liquid up through the tube when the valve is opened.
Such aerosol cans will not spray when turned upside down, the discharge is generally cold, and the propellant gases are often flammable, creating a risk of fire and injury or damage.
Alternatively, the bag-on-valve system separates the liquid product from the propellant gas inside a sealed pouch which is connected to the valve. The pressure squeezes the pouch so that only pure liquid product is dispensed. The bag-on-valve has the benefits of benefits upside down spraying, and is the discharge is quiet and non-chilling.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a liquid dispensing system that overcomes problems in the prior art.
The present invention provides a liquid dispensing system comprising a housing, and a collapsible liquid container mounted inside the housing. The container is connected to a valve and nozzle at the top of the housing, and a bias element exerts a bias force on the container that urges the container toward a collapsed configuration, such that liquid in the container is under pressure. When the valve is opened the liquid is forced out through the nozzle.
DESCRIPTION OF THE DRAWINGS
While the invention is claimed in the concluding portions hereof, preferred embodiments are provided in the accompanying detailed description which may be best understood in conjunction with the accompanying diagrams where like parts in each of the several diagrams are labeled with like numbers, and where:
Fig. I is a schematic sectional side view of an embodiment of a liquid dispensing apparatus of the present invention shown with the collapsible container full of liquid and in an expanded position;
Fig. 2 is a schematic sectional side view of the embodiment of Fig. I shown with the collapsible container with a substantially quantity of liquid expelled therefrom, and in a collapsed position.
DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENTS
This invention is in the field of liquid dispensing systems and in particular a dispensing system for dispensing liquid from a container under pressure.
BACKGROUND
A wide range of liquids, for example lubricating liquid, paint, insect repellant, personal hygiene products such as deodorant, and the like are sold in dispensing containers which include some means for expelling the liquid from the container under some pressure. A
manual pump can be provided for example, but the pump must be constantly operated by a linger to maintain a spray.
Aerosol spray cans contain a propellant gas, usually the vapor of a liquid with boiling point slightly lower than room temperature. Inside the pressurized can, the vapor can exist in equilibrium with its bulk liquid at a pressure that is higher than atmospheric pressure (and able to expel the liquid product), but not dangerously high. As gas escapes, it is immediately replaced by evaporating liquid. A valve at the top of the can is connected to a tube extending down to the bottom of the can. Pressure in the top of the can forces the liquid up through the tube when the valve is opened.
Such aerosol cans will not spray when turned upside down, the discharge is generally cold, and the propellant gases are often flammable, creating a risk of fire and injury or damage.
Alternatively, the bag-on-valve system separates the liquid product from the propellant gas inside a sealed pouch which is connected to the valve. The pressure squeezes the pouch so that only pure liquid product is dispensed. The bag-on-valve has the benefits of benefits upside down spraying, and is the discharge is quiet and non-chilling.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a liquid dispensing system that overcomes problems in the prior art.
The present invention provides a liquid dispensing system comprising a housing, and a collapsible liquid container mounted inside the housing. The container is connected to a valve and nozzle at the top of the housing, and a bias element exerts a bias force on the container that urges the container toward a collapsed configuration, such that liquid in the container is under pressure. When the valve is opened the liquid is forced out through the nozzle.
DESCRIPTION OF THE DRAWINGS
While the invention is claimed in the concluding portions hereof, preferred embodiments are provided in the accompanying detailed description which may be best understood in conjunction with the accompanying diagrams where like parts in each of the several diagrams are labeled with like numbers, and where:
Fig. I is a schematic sectional side view of an embodiment of a liquid dispensing apparatus of the present invention shown with the collapsible container full of liquid and in an expanded position;
Fig. 2 is a schematic sectional side view of the embodiment of Fig. I shown with the collapsible container with a substantially quantity of liquid expelled therefrom, and in a collapsed position.
DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENTS
2 Figs. I and 2 illustrate schematic sectional side views of an embodiment of a liquid dispensing apparatus 1 of the present invention. The apparatus I comprises a cylindrical housing 3, and a collapsible liquid container 5 mounted inside the housing 3.
The illustrated container 5 is collapsible in the vertical direction. The accordion ridges 7 move together when a force is exerted between the top and bottom ends of the container 5. The container is typically made from semi-rigid plastic and would of course be collapsible in any direction given sufficient force, but the container 5 is designed to collapse vertically as described.
The container 5 is connected to a valve 9 and nozzle I I at the top of the housing 3, substantially as is known in the prior art. A bias element, illustrated as compression spring 13, exerts a vertical bias force BF on the container 5 that urges the container 5 from the expanded position of Fig.1 toward the collapsed position of Fig. 2.
The bias force BF exerted on the collapsible container 5 puts the liquid in the container under pressure, such that when the valve 9 is opened the liquid is forced out through the nozzle 11.
It is contemplated that other configurations of collapsible container with a bias element pushing the container toward whatever the collapsed position might be, could be used as well.
The housing 3 of the illustrated apparatus 1 also has a movable circular floor IS with an outer edge engaging threads 17 in the inner surface of the vertical wall of the housing 3.
As the spring 13 extends as liquid is drawn off and the container 5 collapses, the bias force, and therefore the pressure under which the liquid is expelled, may be reduced. To maintain the pressure the floor 15 can be rotated with knob 19 to move the floor 15 up and compress the spring 13. It is further contemplated that a coil spring could be provided to automatically rotate the floor to maintain pressure for a longer time without adjusting the floor manually with the knob 19
The illustrated container 5 is collapsible in the vertical direction. The accordion ridges 7 move together when a force is exerted between the top and bottom ends of the container 5. The container is typically made from semi-rigid plastic and would of course be collapsible in any direction given sufficient force, but the container 5 is designed to collapse vertically as described.
The container 5 is connected to a valve 9 and nozzle I I at the top of the housing 3, substantially as is known in the prior art. A bias element, illustrated as compression spring 13, exerts a vertical bias force BF on the container 5 that urges the container 5 from the expanded position of Fig.1 toward the collapsed position of Fig. 2.
The bias force BF exerted on the collapsible container 5 puts the liquid in the container under pressure, such that when the valve 9 is opened the liquid is forced out through the nozzle 11.
It is contemplated that other configurations of collapsible container with a bias element pushing the container toward whatever the collapsed position might be, could be used as well.
The housing 3 of the illustrated apparatus 1 also has a movable circular floor IS with an outer edge engaging threads 17 in the inner surface of the vertical wall of the housing 3.
As the spring 13 extends as liquid is drawn off and the container 5 collapses, the bias force, and therefore the pressure under which the liquid is expelled, may be reduced. To maintain the pressure the floor 15 can be rotated with knob 19 to move the floor 15 up and compress the spring 13. It is further contemplated that a coil spring could be provided to automatically rotate the floor to maintain pressure for a longer time without adjusting the floor manually with the knob 19
3 To reduce waste and cost it is further contemplated that when the container is empty, the floor 15 could be removed and a new "refill" container which is full of the desired liquid could be inserted into a seal 21 at the top of the housing 3 at the valve 9.
The apparatus requires no gas propellant, and will dispense liquid from the container in any orientation such as upside down. Only the desired liquid is dispensed from the nozzle, and at room temperature, with no flammable gas or the like mixed with the liquid.
The foregoing is considered as illustrative only of the principles of the invention.
Further, since numerous changes and modifications will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all such suitable changes or modifications in structure or operation which may be resorted to are intended to fall within the scope of the claimed invention.
The apparatus requires no gas propellant, and will dispense liquid from the container in any orientation such as upside down. Only the desired liquid is dispensed from the nozzle, and at room temperature, with no flammable gas or the like mixed with the liquid.
The foregoing is considered as illustrative only of the principles of the invention.
Further, since numerous changes and modifications will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all such suitable changes or modifications in structure or operation which may be resorted to are intended to fall within the scope of the claimed invention.
4
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2753764 CA2753764A1 (en) | 2011-09-30 | 2011-09-30 | Pressurized liquid dispensing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2753764 CA2753764A1 (en) | 2011-09-30 | 2011-09-30 | Pressurized liquid dispensing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2753764A1 true CA2753764A1 (en) | 2013-03-30 |
Family
ID=47990355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2753764 Abandoned CA2753764A1 (en) | 2011-09-30 | 2011-09-30 | Pressurized liquid dispensing system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2753764A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107264924A (en) * | 2017-06-29 | 2017-10-20 | 天津诺塑料制品有限公司 | A kind of chemical reagent bucket of self-constriction |
| US20240067440A1 (en) * | 2013-08-05 | 2024-02-29 | Nicholas P. Johns | Method and apparatus for delivering fluid to an individual |
-
2011
- 2011-09-30 CA CA 2753764 patent/CA2753764A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20240067440A1 (en) * | 2013-08-05 | 2024-02-29 | Nicholas P. Johns | Method and apparatus for delivering fluid to an individual |
| CN107264924A (en) * | 2017-06-29 | 2017-10-20 | 天津诺塑料制品有限公司 | A kind of chemical reagent bucket of self-constriction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |
Effective date: 20140422 |