CA2026827A1 - Bottle cap - Google Patents
Bottle capInfo
- Publication number
- CA2026827A1 CA2026827A1 CA 2026827 CA2026827A CA2026827A1 CA 2026827 A1 CA2026827 A1 CA 2026827A1 CA 2026827 CA2026827 CA 2026827 CA 2026827 A CA2026827 A CA 2026827A CA 2026827 A1 CA2026827 A1 CA 2026827A1
- Authority
- CA
- Canada
- Prior art keywords
- bottle
- cap member
- interior
- closure
- pressure
- 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
- 238000007789 sealing Methods 0.000 claims description 5
- 238000013022 venting Methods 0.000 claims description 5
- 239000002991 molded plastic Substances 0.000 claims 1
- 235000013361 beverage Nutrition 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 235000014171 carbonated beverage Nutrition 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 235000012174 carbonated soft drink Nutrition 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Landscapes
- Closures For Containers (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A bottle closure comprising a cap member adapted to be fitted over the open top of a bottle to seal the interior, a one-way valved passage in the cap member adapted to allow for the interior of the bottle to be pressurized, and a pressure relief valve the cap member to vent excess pressure from the bottle interior.
A bottle closure comprising a cap member adapted to be fitted over the open top of a bottle to seal the interior, a one-way valved passage in the cap member adapted to allow for the interior of the bottle to be pressurized, and a pressure relief valve the cap member to vent excess pressure from the bottle interior.
Description
48178~1 BOTTLE CAP
This invention relates to a bottle closure tha-t allow~
for pressurizing of the interior of the bottle and automatic venting of excess pressure.
Carbonated soft drinks or soda pop is commonly packaged and sold in bottle containers that are sufficiently large that the entire contents cannot be consumed in a ~ingle session. These contairler~ are provided with screw caps that allow xesealing of the bottle for storage. Howevex, ~imply resealing the bottle does not adequately preserve the carbonation of the contents. Each time the bottle contents are partially emptied there i9 a increased empty volume in the sealed container in which carbon dioxide can collect until equilibrium pressure with the fluid contents is reached. This gas is lost whenever the container is opened.
After several openings of a container, a significant portion of the oxiginal carbonation is lost and the beverage begins to taste "flat" and unappealing.
Bottle caps have been developed that allow the empty volume of the container to be pressurized with outside air to prevent loss of beverage carbonation during storage. In this manner, a carbonated beverage can be kept fully carbonated and "fresh".
Unfortunately, the prior art bottle cap~ tend to be dangerous in that they allow excessive internal pressuree to develop in the containers, particularly if a container is ~haken or hsated. The excess internal pres~ures can cause rupture of the container or the bottle cap to be explo~ively expelled.
Therefore, khexe i3 a need for a bo-ttle cap that will allow the content~ of a bottle to be preesurized and at the ~ ~ ,; r~ r,, ~ r~
same time permit venting of the bottle interior if internal pressure should exceed a safe level.
Accordingly, the present invention provide~ a bottle closure comprising:
a cap member adapted to be fitted over the open top of a bottle to seal the interior;
a one-way valved passage in said cap member adapted to allow for the interior o the bottle to be pressurized;
pressure relief mean~ in said cap member to vent excess pressure from said bottle interior.
The bottle cap of the present invention is also provided with a hand pump to allow the bottle interior to be pressurized through the passage.
Aspects of the present invention are illustrated, merely by way of example, in the accompanying drawings in which:
Figure 1 i3 a partial cross-sectional view through the bottle cap oE the present invention in place on a bottle;
and Fiyure 2 is an exploded view showiny -the various components of the bottle cap~
ReEerrlnc~ to Fi~ures 1 and 2, there is a shown a bot-tle closure 10 according to the present inventlon. The closure comprises a cap member 12 preferably moulded from plastlc.
The cap member is formed at its lower end with internal threads 1~ adap-ted to be engage with the corresponding threads Eormed on a conventional bo-ttle 16. When cap member 12 i8 tightened over the open top of a bottle ik e~Eectively seals the interior oE the bottle.
.J ~d i The cap member is formed with a passage 18 that connects the interior of the bottle with the exterior of the cap member at 20. In passage 18, there is a one-way valve 19 that allows flow into the bottle, but prevents any flow out of the bottle. A hand pump (not shown) can be connected to the passage at 20 to allow the interior and the contents of the bottle to be pressurized by pumping additional air into the bottle.
The cap member is also provided with pressure relief means in the form of an exhaust passage 22 and valve assembly 2~ to vent excess pressure from the bottle interior. As best shown in Figure 2, valve assembly 24 includes a plug member 23 having an upper annular sealing portion 25 rom which a shaft 26 extendsO Shaft 25 is slidably housed within exhaust passage 22 with suficient clearance to permit the escape of gases when required.
Shaft 26 extends into a central cavity 28 within the cap member. A spring 29 fits over the shaft and is retained in place between the upper shoulder 30 of cavity 28 and a pin 31 extending through an aperture 32 in the lower end o~
sha~t 26. Spring 29 within cavity 28 tends to urge guide shaft 26 downwardly such that annular sealing portion 25 is held tightly against the upper ~urface of the cap member to seal the exhaust passage. O-ring 34 i~ provided between annular portion 25 and the top o the cap member to provide a ~eal.
While ~pring 29 normally bia~e~ the plug in-to a sealing position, i excees pres~ure ~hould develop within the container, a point will be reached where the exce~s pre~ure will overcome the downward orce of -the ~pring to move the plug upwardly there~y allowing exce~s pre~ure -to vent through the exhaust passage. Spring 2~ i~ selected such that it will release at a safe pressure level. This venting po3ition o plug 23 is ~hown by dashed lines in Figure 1.
Once the excess pre~sure is r~lieved, the plug will automatically close. In this manner, the invention of the present application provides a safe and reliable device for sealing a carbonated beverage bottle.
The pressure relief valve assembly can also be used to ensure that the beverage container is initially pressurized to the correct level by employing the hand pump to pressurize the container until the pressure relief valve just begins to start venting.
Although the present invention has been described in ~ome detail by way oE example Eor purpose~ of clarity and understanding, it will be apparent that certain changes and modifications may be practised within the scope oE the appended claims.
This invention relates to a bottle closure tha-t allow~
for pressurizing of the interior of the bottle and automatic venting of excess pressure.
Carbonated soft drinks or soda pop is commonly packaged and sold in bottle containers that are sufficiently large that the entire contents cannot be consumed in a ~ingle session. These contairler~ are provided with screw caps that allow xesealing of the bottle for storage. Howevex, ~imply resealing the bottle does not adequately preserve the carbonation of the contents. Each time the bottle contents are partially emptied there i9 a increased empty volume in the sealed container in which carbon dioxide can collect until equilibrium pressure with the fluid contents is reached. This gas is lost whenever the container is opened.
After several openings of a container, a significant portion of the oxiginal carbonation is lost and the beverage begins to taste "flat" and unappealing.
Bottle caps have been developed that allow the empty volume of the container to be pressurized with outside air to prevent loss of beverage carbonation during storage. In this manner, a carbonated beverage can be kept fully carbonated and "fresh".
Unfortunately, the prior art bottle cap~ tend to be dangerous in that they allow excessive internal pressuree to develop in the containers, particularly if a container is ~haken or hsated. The excess internal pres~ures can cause rupture of the container or the bottle cap to be explo~ively expelled.
Therefore, khexe i3 a need for a bo-ttle cap that will allow the content~ of a bottle to be preesurized and at the ~ ~ ,; r~ r,, ~ r~
same time permit venting of the bottle interior if internal pressure should exceed a safe level.
Accordingly, the present invention provide~ a bottle closure comprising:
a cap member adapted to be fitted over the open top of a bottle to seal the interior;
a one-way valved passage in said cap member adapted to allow for the interior o the bottle to be pressurized;
pressure relief mean~ in said cap member to vent excess pressure from said bottle interior.
The bottle cap of the present invention is also provided with a hand pump to allow the bottle interior to be pressurized through the passage.
Aspects of the present invention are illustrated, merely by way of example, in the accompanying drawings in which:
Figure 1 i3 a partial cross-sectional view through the bottle cap oE the present invention in place on a bottle;
and Fiyure 2 is an exploded view showiny -the various components of the bottle cap~
ReEerrlnc~ to Fi~ures 1 and 2, there is a shown a bot-tle closure 10 according to the present inventlon. The closure comprises a cap member 12 preferably moulded from plastlc.
The cap member is formed at its lower end with internal threads 1~ adap-ted to be engage with the corresponding threads Eormed on a conventional bo-ttle 16. When cap member 12 i8 tightened over the open top of a bottle ik e~Eectively seals the interior oE the bottle.
.J ~d i The cap member is formed with a passage 18 that connects the interior of the bottle with the exterior of the cap member at 20. In passage 18, there is a one-way valve 19 that allows flow into the bottle, but prevents any flow out of the bottle. A hand pump (not shown) can be connected to the passage at 20 to allow the interior and the contents of the bottle to be pressurized by pumping additional air into the bottle.
The cap member is also provided with pressure relief means in the form of an exhaust passage 22 and valve assembly 2~ to vent excess pressure from the bottle interior. As best shown in Figure 2, valve assembly 24 includes a plug member 23 having an upper annular sealing portion 25 rom which a shaft 26 extendsO Shaft 25 is slidably housed within exhaust passage 22 with suficient clearance to permit the escape of gases when required.
Shaft 26 extends into a central cavity 28 within the cap member. A spring 29 fits over the shaft and is retained in place between the upper shoulder 30 of cavity 28 and a pin 31 extending through an aperture 32 in the lower end o~
sha~t 26. Spring 29 within cavity 28 tends to urge guide shaft 26 downwardly such that annular sealing portion 25 is held tightly against the upper ~urface of the cap member to seal the exhaust passage. O-ring 34 i~ provided between annular portion 25 and the top o the cap member to provide a ~eal.
While ~pring 29 normally bia~e~ the plug in-to a sealing position, i excees pres~ure ~hould develop within the container, a point will be reached where the exce~s pre~ure will overcome the downward orce of -the ~pring to move the plug upwardly there~y allowing exce~s pre~ure -to vent through the exhaust passage. Spring 2~ i~ selected such that it will release at a safe pressure level. This venting po3ition o plug 23 is ~hown by dashed lines in Figure 1.
Once the excess pre~sure is r~lieved, the plug will automatically close. In this manner, the invention of the present application provides a safe and reliable device for sealing a carbonated beverage bottle.
The pressure relief valve assembly can also be used to ensure that the beverage container is initially pressurized to the correct level by employing the hand pump to pressurize the container until the pressure relief valve just begins to start venting.
Although the present invention has been described in ~ome detail by way oE example Eor purpose~ of clarity and understanding, it will be apparent that certain changes and modifications may be practised within the scope oE the appended claims.
Claims (6)
1. A bottle closure comprising:
a cap member adapted to be fitted over the open top of a bottle to seal the interior;
a one-way valved passage in said cap member to allow the interior of the bottle to be pressurized;
pressure relief means in said cap member to vent excess pressure from said bottle interior.
a cap member adapted to be fitted over the open top of a bottle to seal the interior;
a one-way valved passage in said cap member to allow the interior of the bottle to be pressurized;
pressure relief means in said cap member to vent excess pressure from said bottle interior.
2. A bottle closure as claimed in claim 1 in which said pressure relief means comprises an exhaust passage through said cap member that is sealable by a valve that is normally biased into a sealing position by resilient means, said valve being moved to a venting position when pressure within said container above a preselected level is reached.
3. A bottle closure as claimed in claim 2 in which said resilient means is a spring.
4. A bottle closure as claimed in claim 1 including a hand pump connectable to said valved passage in order to pressurize the bottle interior.
5. A bottle closure as claimed in claim 1 in which said cap member is formed with internal threads adapted to engage the threads of a bottle top.
6. A bottle closure as claimed in claim 1 in which said closure member is made from moulded plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2026827 CA2026827A1 (en) | 1990-10-03 | 1990-10-03 | Bottle cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2026827 CA2026827A1 (en) | 1990-10-03 | 1990-10-03 | Bottle cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2026827A1 true CA2026827A1 (en) | 1992-04-04 |
Family
ID=4146094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2026827 Abandoned CA2026827A1 (en) | 1990-10-03 | 1990-10-03 | Bottle cap |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2026827A1 (en) |
-
1990
- 1990-10-03 CA CA 2026827 patent/CA2026827A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |