US4523697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid dispensing package
Assignee: Mondelez UK Holdings and Services Ltd
•
Filing: 1981-10-09
•
Granted: 1985-06-18
•
Expires: 2001-10-09
Abstract
Abstract A container for dispensing a concentrate at a predetermined flow rate includes a first container part for containing a volume of the concentrate terminating in a first valve part in communication with the volume, a second container part having a second mating valve part therein and having an outlet opening, the second container part movable with respect to the first container part to selectively move the first and second valve parts together and apart by a preselected amount to control the flow of the concentrate from said first part, through the valve parts and out the outlet, tabs on the outside of the first and second parts for effecting movement of the first and second parts with respect to each other, and a tube to permit application of a controlled pressure to the volume in the container.
Inventors
- 👤 Edward L. Jeans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:33
CPC Classifications
B; B67; B67D; B67D1/00; B67D1/0042; B67D1/0057; B67D1/0069; B67D1/0071; B67D1/0072; B67D1/0015; B67D1/0021; B67D1/0043; B67D1/0051; B67D1/0052; B67D1/007; B67D1/0078; B67D1/0079; B67D1/08; B67D1/0801; B67D1/0081; B67D2001/0087; B67D2001/0812; B67D2001/0814; B67D2001/0815; B67D2210/00; B67D2210/00028; B67D2210/00031; B67D2210/00034; B67D2210/00039; B67D2210/00047; B67D2210/00049; B67D2210/00052; B67D2210/0006; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/314; Y10T137/8593; Y10T137/87917; Y10T137/87925; Y10T137/87941; Y10T137/87949; Y10T137/87957
Claims Analysis
Total Claims: 64
Claim 1
Independent Claim
333 words
A container for dispensing a concentrate through air to a receptacle at a fixed and predetermined flow rate comprising: (a) a first container part for containing a volume of the concentrate; (b) a first valve part in communication with said volume; (c) a second container part having a second mating valve part therein and having means forming an outlet opening, said second container part movable to selectively move said first and second valve parts with respect to each other to allow, while said first and second valve parts are moved apart, a continuous flow of said concentrate from said first part, through said valve parts and out said outlet opening; (d) means establishing a constricted area through which concentrate must flow when being dispensed, the cross section of said constricted area being predetermined as a function of the viscosity of said concentrate; (e) means to permit introduction of a gas from outside the container to the interior of said first container part; (f) means to maintain an essentially constant head pressure in the interior of said first container part over a range of concentrate levels in said first container part, whereby said means establishing and said means to maintain, together will result in a controlled constant flow rate from said outlet opening; (g) said first container part comprises a bottle with a neck and said second container part comprises a closure part including a cap disposed over said neck; and (h) said first valve part comprising an insert in said neck, said insert having an outer part with a large bore, and an inner part with a smaller bore in communication with said bottle, and said second valve part comprising a projecting member on said cap arranged to abut against said insert, said projection having a central bore therethrough to the outside of said cap, a tube extending from said bore through said inner part of said insert, with a clearance, for connecting a source of pressure to the inside of said container.
Claim 2
Dependent Claim
333 words
A container for dispensing a concentrate through air to a receptacle at a fixed and predetermined flow rate comprising: (a) a first container part for containing a volume of the concentrate; (b) a first valve part in communication with said volume; (c) a second container part having a second mating valve part therein and having means forming an outlet opening, said second container part movable to selectively move said first and second valve parts with respect to each other to allow, while said first and second valve parts are moved apart, a continuous flow of said concentrate from said first part, through said valve parts and out said outlet opening; (d) means establishing a constricted area through which concentrate must flow when being dispensed, the cross section of said constricted area being predetermined as a function of the viscosity of said concentrate; (e) means to permit introduction of a gas from outside the container to the interior of said first container part; (f) means to maintain an essentially constant head pressure in the interior of said first container part over a range of concentrate levels in said first container part, whereby said means establishing and said means to maintain, together will result in a controlled constant flow rate from said outlet opening; (g) said first container part comprises a bottle with a neck and said second container part comprises a closure part including a cap disposed over said neck; and (h) said first valve part comprising an insert in said neck, said insert having an outer part with a large bore, and an inner part with a smaller bore in communication with said bottle, and said second valve part comprising a projecting member on said cap arranged to abut against said insert, said projection having a central bore therethrough to the outside of said cap, a tube extending from said bore through said inner part of said insert, with a clearance, for connecting a source of pressure to the inside of said container.
Claim 3
Dependent Claim
53 words
A container according to claim 1 and further including means for effecting movement of said first and second valve parts with respect to each other comprising: (a) means on said bottle and cap respectively for engagement by first and second parts of a dispensing mechanism which are movable with respect to each other.
Claim 4
Dependent Claim
35 words
A container according to claim 1 and further including an O ring seal between said first and second valve parts to stop flow to the outlet opening in said cap when said valve is closed.
Claim 5
Dependent Claim
22 words
A container according to claim 1 wherein said means to permit introduction comprise means to permit introduction of air at atmospheric pressure.
Claim 6
Dependent Claim
23 words
A container according to claim 1 wherein said means to permit introduction comprise means to permit introduction of a gas at elevated pressure.
Claim 7
Dependent Claim
21 words
A container according to claim 1 and further including a valve for controlling flow through said tube in said projecting member.
Claim 8
Dependent Claim
91 words
A container according to claim 6 wherein said valve comprises a resilient valve seat inwardly spaced from said smaller bore and rigidly coupled to said first valve part and a flat end on said tube cooperating with said seat to block flow through said tube when said first and second valve parts are in sealing relationship and said means for effecting comprise cooperating surfaces on said neck and said cap for converting a relative rotation between said cap and said bottle into a linear relative movement between said cap and bottle.
Claim 9
Dependent Claim
30 words
A container according to claim 7 wherein said valve seat is supported at the center of a plurality of ribs on a circumference surrounding said smaller bore extending inwardly therefrom.
Claim 10
Dependent Claim
31 words
The container according to claim 7 and further including an O ring seal between peripheral portion, of said first and second valve parts to prevent leakage when said valve is open.
Claim 11
Dependent Claim
41 words
A container according to claim 1 wherein said means for effecting further comprise: cooperating surfaces on said neck and said cap for converting a relative rotation between said cap and bottle into a linear relative motion between said cap and bottle.
Claim 12
Dependent Claim
49 words
A container according to claim 10 wherein said cooperating surfaces comprise at least one projection on one of said surfaces and a slot on the other of said surfaces in which said projection is disposed, said slot slanted so that a rotation will be converted into a linear motion.
Claim 13
Dependent Claim
32 words
A container according to claim 11 wherein the size of said outlet is selected to establish a desired flow rate after rotation, based on the nature of the concentrate to be contained.
Claim 14
Dependent Claim
39 words
A container according to claim 11 wherein the the size of said outlet opening is sized to establish a desired flow rate after movement of said valve parts apart, based on the nature of the concentrate to be contained.
Claim 15
Dependent Claim
14 words
A container according to claim 11 wherein diametrically opposed slots and projections are provided.
Claim 16
Dependent Claim
19 words
A container according to claim 11 wherein said projections are on said neck and said slots in said cap.
Claim 17
Dependent Claim
43 words
A container according to claim 15 wherein said slot has a first portion which is horizontal thereby resulting in no linear motion due to rotation within said horizontal section and a slanted portion which does result in a linear motion with relative rotation.
Claim 18
Dependent Claim
95 words
A container according to claim 16 wherein said means on the outside comprise indexing means on said container and cap respectively, said indexing means positioned with respect to said projections and slots such that a predetermined fixed relative rotation of said indexing means from an initial position where said projection is located in the horizontal section of said slot will result in said projections moving into said slanted section, to give a proportional amount of relative linear motion, causing said first and second valve parts to separate to permit a flow through said outlet opening.
Claim 19
Dependent Claim
34 words
A container according to claim 2 in combination with a dispensing mechanism having at least first and second parts movable with respect to each other and adaptable to engage said bottle and cap respectively.
Claim 20
Dependent Claim
41 words
The combination according to claim 18 and further including means for obtaining an initial movement of said first dispensing mechanism part with respect to said second dispensing mechanism part without an opening movement of said first and second container valve part.
Claim 21
Dependent Claim
36 words
The combination according to claim 19 wherein said means for obtaining comprise means permitting an initial movement of one said dispensing mechanism parts with respect to its respective container part before positively engaging said container part.
Claim 22
Dependent Claim
54 words
The combination according to claim 20 wherein opposing surfaces of said dispensing mechanism parts and bottle and cap contain cooperating slots and tabs for engagement with each other and wherein said means for obtaining comprise an elongated slot in which a cooperating tab can freely move over said initial movement before being positively engaged.
Claim 23
Dependent Claim
20 words
The combination according to claim 19 wherein said means for obtaining comprise cooperating cam surfaces on said cap and bottle.
Claim 24
Dependent Claim
22 words
A container according to claim 1, wherein said means to permit introduction comprise means to permit introduction of air at atmospheric pressure.
Claim 25
Dependent Claim
190 words
A package for use in a beverage dispensing means comprising: a body for containing a quantity of liquid to be dispensed and having a bottom, side wall means and a top; a cap closing the top of the body; a seal region defined by a first seal element in the top of the body and a second seal element on the cap which sealingly engages said first seal element to prevent in use the liquid from passing the seal region; said cap integral with said body and movable resiliently away from said body to unseat the sealing element, to enable the first and second seal elements to be displaced relatively to permit the liquid to flow past the seal region when the package is in inverted condition, first aperture means in the cap enabling the liquid to flow from the cap to be caught in a drinking vessel, second aperture means in the cap to enable the connection of the interior of the body of the package to a pressurizing fluid for driving the liquid from the first aperture means when the first and second seal elements are displaced relatively.
Claim 26
Dependent Claim
190 words
A package for use in a beverage dispensing means comprising: a body for containing a quantity of liquid to be dispensed and having a bottom, side wall means and a top; a cap closing the top of the body; a seal region defined by a first seal element in the top of the body and a second seal element on the cap which sealingly engages said first seal element to prevent in use the liquid from passing the seal region; said cap integral with said body and movable resiliently away from said body to unseat the sealing element, to enable the first and second seal elements to be displaced relatively to permit the liquid to flow past the seal region when the package is in inverted condition, first aperture means in the cap enabling the liquid to flow from the cap to be caught in a drinking vessel, second aperture means in the cap to enable the connection of the interior of the body of the package to a pressurizing fluid for driving the liquid from the first aperture means when the first and second seal elements are displaced relatively.
Claim 27
Dependent Claim
44 words
A package according to claim 24, wherein said cap is provided with bayonet pin formations wherein said cap can be displaced from said body by engaging the said bayonet pin formations is curved cam tracks of a rotatable member, and rotating said rotatable member.
Claim 28
Dependent Claim
124 words
A package for a supply of concentrate used in making a beverage comprising: (a) a container having a bottle with a neck and a cap, rotatable thereon, a valve seat disposed in said neck and a valve member disposed in said cap, said cap having a opening therein; (b) a tube attached to said opening and extending through said valve seat, with a spacing (c) cooperating camming surfaces on said cap and bottle neck for converting a rotary motion of said cap into a linear motion which will separate said valve member from said valve seat; (d) an outlet opening in the top of said cap; and (e) at least one tab on the neck of said bottle and a tab on said cap.
Claim 29
Dependent Claim
124 words
A package for a supply of concentrate used in making a beverage comprising: (a) a container having a bottle with a neck and a cap, rotatable thereon, a valve seat disposed in said neck and a valve member disposed in said cap, said cap having a opening therein; (b) a tube attached to said opening and extending through said valve seat, with a spacing (c) cooperating camming surfaces on said cap and bottle neck for converting a rotary motion of said cap into a linear motion which will separate said valve member from said valve seat; (d) an outlet opening in the top of said cap; and (e) at least one tab on the neck of said bottle and a tab on said cap.
Claim 30
Dependent Claim
17 words
A package according to claim 26 and further including a valve for controlling flow through said tube.
Claim 31
Dependent Claim
12 words
A package according to claim 27 wherein said valve comprises check valve.
Claim 32
Dependent Claim
27 words
A package according to claim 28 wherein said valve comprises a seat attached to said valve seat and inwardly spaced therefrom and the end of said tube.
Claim 33
Dependent Claim
256 words
A package for use in a beverage dispensing means comprising: a body for container a quantity of liquid to be dispensed and having a bottom, side wall means and a top; a cap closing the top of the body; a seal region defined by a first seal element in the top of the body; and a second seal element on the cap which sealingly engages said first seal element to prevent the liquid from passing the seal region; means mountng the cap on the body for movement relative to the body to enable the first and second seal elements to be relatively displaced to permit the liquid flow past the seal region, when the package is in inverted condition, said cap being adapted to be provided with first aperture means in the cap enabling the liquid to flow from the cap interior to be caught in a drinking vessel; a second aperture in said cap, a passage extending from said second aperture to the inside of said body to enable the connection of the interior of the body of the package to atmosphere in a manner such as to maintain an essentially constant head pressure within said body; a valve for permitting flow into said passage adapted to open when said first and second seal elements are relatively displaced; and a compensating vessel comprising a closed inverted cup to which said passage extends, the interior of said body communicated with the interior of said compensating vessel through an aperture at the edge of said compensating vessel.
Claim 34
Dependent Claim
256 words
A package for use in a beverage dispensing means comprising: a body for container a quantity of liquid to be dispensed and having a bottom, side wall means and a top; a cap closing the top of the body; a seal region defined by a first seal element in the top of the body; and a second seal element on the cap which sealingly engages said first seal element to prevent the liquid from passing the seal region; means mountng the cap on the body for movement relative to the body to enable the first and second seal elements to be relatively displaced to permit the liquid flow past the seal region, when the package is in inverted condition, said cap being adapted to be provided with first aperture means in the cap enabling the liquid to flow from the cap interior to be caught in a drinking vessel; a second aperture in said cap, a passage extending from said second aperture to the inside of said body to enable the connection of the interior of the body of the package to atmosphere in a manner such as to maintain an essentially constant head pressure within said body; a valve for permitting flow into said passage adapted to open when said first and second seal elements are relatively displaced; and a compensating vessel comprising a closed inverted cup to which said passage extends, the interior of said body communicated with the interior of said compensating vessel through an aperture at the edge of said compensating vessel.
Claim 35
Dependent Claim
35 words
A package according to claim 30, and further including means on said body and cap, respectively, for engagement by first and second parts of a dispensing mechanism which are movable with respect to each other.
Claim 36
Dependent Claim
199 words
Apparatus for dispensing a concentrate at a predetermined flow rate comprising: (a) a container including: (1) a bottle with a neck for containing a volume of the concentrate; (2) a first valve part at said neck in communication with said volume; (3) a cap having a second mating valve part therein and having means forming an outlet opening, said cap movable with respect to said bottle to selectively move said first and second valve parts with respect to each other by a preselected amount to allow the flow of said concentrate from said first part, through said valve parts and out said outlet opening; (4) means on said bottle and cap, respectively, for engagement by first and second parts of a dispensing mechanism which are movable with respect to each other; (5) means to permit introduction of a gas to the interior of said bottle in such a manner as to maintain an essentially constant heat pressure in the interior of said bottle; and (b) a dispensing mechanism comprising first and second parts movable with respect to each other engaging said means on said bottle and cap to move said first and second valve parts to permit concentrate flow.
Claim 37
Dependent Claim
199 words
Apparatus for dispensing a concentrate at a predetermined flow rate comprising: (a) a container including: (1) a bottle with a neck for containing a volume of the concentrate; (2) a first valve part at said neck in communication with said volume; (3) a cap having a second mating valve part therein and having means forming an outlet opening, said cap movable with respect to said bottle to selectively move said first and second valve parts with respect to each other by a preselected amount to allow the flow of said concentrate from said first part, through said valve parts and out said outlet opening; (4) means on said bottle and cap, respectively, for engagement by first and second parts of a dispensing mechanism which are movable with respect to each other; (5) means to permit introduction of a gas to the interior of said bottle in such a manner as to maintain an essentially constant heat pressure in the interior of said bottle; and (b) a dispensing mechanism comprising first and second parts movable with respect to each other engaging said means on said bottle and cap to move said first and second valve parts to permit concentrate flow.
Claim 38
Dependent Claim
37 words
Apparatus according to claim 32, wherein said means to permit introduction comprise means to permit introduction of air at atmospheric pressure in a controlled manner which will maintain said essentially constant head pressure within said container part.
Claim 39
Dependent Claim
75 words
Apparatus according to claim 32, wherein said first valve part comprises an insert in said neck, and said second valve part comprises a projecting member on said cap arranged to abut against said insert, said projection having a central bore therethrough to the outside of said cap, said means to permit introduction comprising a tube extending from said bore through said insert, with a clearance, for connecting said gas to the inside of said container.
Claim 40
Dependent Claim
32 words
Apparatus according to claim 34, and further including a seal between said first and second valve parts to stop flow to the outlet opening in said cap when said valve is closed.
Claim 41
Dependent Claim
20 words
Apparatus according to claim 34, and further including a valve for controlling flow through said tube in said projecting member.
Claim 42
Dependent Claim
86 words
Apparatus according to claim 36, wherein said valve comprises a resilient valve seat inwardly spaced from said insert and rigidly coupled to said first valve part and a flat end on said tube cooperating with said seat to block flow through said tube when said first and second valve parts are in sealing relationship and further including cooperating surfaces on said neck and said cap for converting a relative rotation between said cap and said bottle into a linear relative movement between said cap and bottle.
Claim 43
Dependent Claim
29 words
Apparatus according to claim 37, wherein said valve seat is supported at the center of a plurality of ribs on a circumference surrounding said smaller bore extending inwardly therefrom.
Claim 44
Dependent Claim
28 words
Apparatus according to claim 34, and further including a seal between peripheral portions, of said first and second valve parts to prevent leakage when said valve is open.
Claim 45
Dependent Claim
36 words
Apparatus according to claim 32, and further including: cooperating surfaces on said neck and said cap for converting a relative rotation between said cap and bottle into a linear relative motion between said cap and bottle.
Claim 46
Dependent Claim
48 words
Apparatus according to claim 40, wherein said cooperating surfaces comprise at least one projection on one of said surfaces and a slot on the other of said surfaces in which said projection is disposed, said slot slanted so that a rotation will be converted into a linear motion.
Claim 47
Dependent Claim
33 words
Apparatus according to claim 37 or 41, wherein the size of said outlet is selected to establish a desired flow rate after rotation, based on the nature of the concentrate to be contained.
Claim 48
Dependent Claim
224 words
A package for use in a beverage dispensing means comprising: a body for containing a quantity of liquid to be dispensed and having a bottom, side wall means and a top; a cap closing the top of the body; a seal region defined by a first seal element in the top of the body and a second seal element on the cap which sealingly engages said first seal element to prevent in use the liquid from passing the seal region; means mounting the cap on the body for movement relative to the body to enable the first and second seal elements to be displaced relatively to permit the liquid to flow past the seal region when the package is in inverted condition; aperture means in the cap enabling the liquid to flow from the cap to be caught in a drinking vessel; a passage in said cap between seal region and said aperture means; and means opening into the interior of the body of the package at a location spaced from said cap forming a passage separate from the passage between said seal region and said aperture means to enable the connection of the interior of the body of the package to a pressurizing fluid for driving the liquid from the first aperture means when the first and second seal elements are displaced relatively.
Claim 49
Dependent Claim
224 words
A package for use in a beverage dispensing means comprising: a body for containing a quantity of liquid to be dispensed and having a bottom, side wall means and a top; a cap closing the top of the body; a seal region defined by a first seal element in the top of the body and a second seal element on the cap which sealingly engages said first seal element to prevent in use the liquid from passing the seal region; means mounting the cap on the body for movement relative to the body to enable the first and second seal elements to be displaced relatively to permit the liquid to flow past the seal region when the package is in inverted condition; aperture means in the cap enabling the liquid to flow from the cap to be caught in a drinking vessel; a passage in said cap between seal region and said aperture means; and means opening into the interior of the body of the package at a location spaced from said cap forming a passage separate from the passage between said seal region and said aperture means to enable the connection of the interior of the body of the package to a pressurizing fluid for driving the liquid from the first aperture means when the first and second seal elements are displaced relatively.
Claim 50
Dependent Claim
64 words
A package according to claim 43, wherein said means opening comprise a tube integral with said cap extending into the interior of the body and further including a compensating vessel comprising a closed, inverted cup into which the said tube extends, the interior of said body communicated with the interior of said compensating vessel through an aperture at the edge of the compensating vessel.
Claim 51
Dependent Claim
29 words
A package according to claim 43, wherein said pressurizing gas is the atomsphere and further including a check valve in said means opening into the interior of said body.
Claim 52
Dependent Claim
35 words
A package according to claim 43, and further including means on said body and cap, respectively, for engagement by first and second parts of a dispensing mechanism which are movable with respect to each other.
Claim 53
Dependent Claim
13 words
A package according to claim 43, wherein said pressurizing gas is the atmosphere.
Claim 54
Dependent Claim
30 words
A package according to claim 43, wherein said means opening include a second aperture in said cap and a tube extending from said cap into the interior of the package.
Claim 55
Dependent Claim
20 words
A package according to claim 43 and further including a tear away seal covering said first and second aperture means.
Claim 56
Dependent Claim
60 words
A package according to claim 43, wherein said means mounting comprise a neck at the top of said body on which said cap is rotatably mounted and cam projections and grooves mounting the cap on the neck, said cam projections and grooves permitting a helical movement of the cap on the neck which effects the separation of the seal elements.
Claim 57
Dependent Claim
18 words
A package according to claim 48 and further including a cap on the inner end of said tube.
Claim 58
Dependent Claim
34 words
A package according to claim 48 wherein said tube has an intermediate portion with a shoulder defining the second seal element, and an open outer end defining said first aperture means in said cap.
Claim 59
Dependent Claim
40 words
A package according to claim 43, wherein said body has a neck at the top thereof which is closed by said cap, and said first sealing element is defined internally of said neck by a reduced cross-section, conical neck portion.
Claim 60
Dependent Claim
30 words
A package according to claim 43, wherein said body has a neck at the top thereof which is defined internally of said neck by a reduced cross-section, conical neck portion.
Claim 61
Dependent Claim
66 words
A package according to claim 43, wherein said first sealing element comprises a sealing flange, located internally of a neck of the body, and said second sealing element is the outside of a tube integral with the cap, said tube having a reduced diameter portion which moves into register with the sealing flange when the cap is displaced relative to the body so opening the seal.
Claim 62
Dependent Claim
56 words
A package according to claim 55 wherein said pressurizing fluid comprises a supply of gas at a pressure above atmosphere and further including: a split flexible seal check valve in said cap to enable the connection of the interior of the body of the package to said supply by a tube engaging the split flexible seal.
Claim 63
Dependent Claim
243 words
A container for dispensing a concentrate through air to a receptacle at a fixed and predetermined flow rate comprising: (a) a first container part for containing a volume of the concentrate; (b) a first valve part in communication with said volume; (c) a second container part having a second mating valve part therein and having means forming an outlet opening, said second container part movable to selectively move said first and second valve parts with respect to each other to allow, while said first and second valve parts are moved apart, a continuous flow of said concentrate from said first part, through said valve parts and out said outlet opening; (d) means establishing a constricted area through which concentrate must flow when being dispensed, the cross section of said constricted area being predetermined as a function of the viscosity of said concentrate; (e) a tube extending through said first and second valve parts such as to be in communication with said first container part to permit introduction of gas from outside said container to the interior of said first container part and means forming a valve for controlling flow through said tube; and (f) means to maintain an essentially constant head pressure in the interior of said first container part over a range of concentrate levels in said first container part, whereby said means establishing and said means to maintain, together will result in a controlled constant flow rate from said outlet opening.
Claim 64
Dependent Claim
243 words
A container for dispensing a concentrate through air to a receptacle at a fixed and predetermined flow rate comprising: (a) a first container part for containing a volume of the concentrate; (b) a first valve part in communication with said volume; (c) a second container part having a second mating valve part therein and having means forming an outlet opening, said second container part movable to selectively move said first and second valve parts with respect to each other to allow, while said first and second valve parts are moved apart, a continuous flow of said concentrate from said first part, through said valve parts and out said outlet opening; (d) means establishing a constricted area through which concentrate must flow when being dispensed, the cross section of said constricted area being predetermined as a function of the viscosity of said concentrate; (e) a tube extending through said first and second valve parts such as to be in communication with said first container part to permit introduction of gas from outside said container to the interior of said first container part and means forming a valve for controlling flow through said tube; and (f) means to maintain an essentially constant head pressure in the interior of said first container part over a range of concentrate levels in said first container part, whereby said means establishing and said means to maintain, together will result in a controlled constant flow rate from said outlet opening.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-17 | 1988-12-17 | 1989-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-17 | 1992-12-17 | 1993-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-17 | 1996-12-17 | 1997-06-18 | $7700.00 | Window Closed / Lapsed |