EP0407556A1 - Procede et appareil de distribution d'un liquide - Google Patents

Procede et appareil de distribution d'un liquide

Info

Publication number
EP0407556A1
EP0407556A1 EP90902511A EP90902511A EP0407556A1 EP 0407556 A1 EP0407556 A1 EP 0407556A1 EP 90902511 A EP90902511 A EP 90902511A EP 90902511 A EP90902511 A EP 90902511A EP 0407556 A1 EP0407556 A1 EP 0407556A1
Authority
EP
European Patent Office
Prior art keywords
container
spigot
vent
closure member
sealing
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Withdrawn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
EP90902511A
Other languages
German (de)
English (en)
Other versions
EP0407556A4 (en
Inventor
William R. Scholle
Chester Savage
William A. Hardwick, Jr.
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.)
Scholle IPN Corp
Original Assignee
Scholle Corp
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
Priority claimed from US07/403,189 external-priority patent/US4976381A/en
Priority claimed from US07/417,328 external-priority patent/US5118015A/en
Application filed by Scholle Corp filed Critical Scholle Corp
Publication of EP0407556A1 publication Critical patent/EP0407556A1/fr
Publication of EP0407556A4 publication Critical patent/EP0407556A4/en
Withdrawn legal-status Critical Current

Links

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
    • B67D3/00—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
    • B67D3/04—Liquid-dispensing taps or cocks adapted to seal and open tapping holes of casks, e.g. for beer
    • B67D3/045—Liquid-dispensing taps or cocks adapted to seal and open tapping holes of casks, e.g. for beer with a closing element having a linear movement, in a direction parallel to the seat
    • B67D3/046—Liquid-dispensing taps or cocks adapted to seal and open tapping holes of casks, e.g. for beer with a closing element having a linear movement, in a direction parallel to the seat and venting means operated automatically with the tap
    • 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
    • B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
    • B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
    • B65D21/0209—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together stackable or joined together one-upon-the-other in the upright or upside-down position
    • B65D21/023—Closed containers provided with local cooperating elements in the top and bottom surfaces, e.g. projection and recess
    • B65D21/0231—Bottles, canisters or jars whereby the neck or handle project into a cooperating cavity in the bottom
    • 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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
    • B65D47/26—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with slide valves, i.e. valves that open and close a passageway by sliding over a port, e.g. formed with slidable spouts
    • B65D47/261—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with slide valves, i.e. valves that open and close a passageway by sliding over a port, e.g. formed with slidable spouts having a rotational or helicoidal movement
    • B65D47/263—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with slide valves, i.e. valves that open and close a passageway by sliding over a port, e.g. formed with slidable spouts having a rotational or helicoidal movement between tubular parts

Definitions

  • the present invention relates to packaging and dis ⁇ pensing of liquid, and more particularly concerns pack- aging of draft beer for optimum retention of carbon dioxide and improved dispensing.
  • Draft beer sold in retail outlets is dispensed from commercial metal containers that are connected to a source of pressurized gas.
  • the commercial container has a complex spigot having internal baffling designed to control foam produced when beer is dispensed. Such spigots are expensive.
  • rela ⁇ tively small diameter baffle tube or "pigtail” extends from the spigot toward the bottom of the container to control foam.
  • the barrel is pressurized by a suitable gas, such as carbon dioxide, nitrogen or air, and dis ⁇ pensing of contents of the container is provided under the force of the internal pressure of the container.
  • Draft beer marketed for home use must be provided with similar pressurizing equipment or the beer must be con ⁇ sumed quickly from an opened container.
  • a hand pump is provided or sometimes even sold with the beer container, so that the container may be repeatedly pressurized with air from the pump to enable dispensing of the contents.
  • the beer is dispensed only by the force of the internal pressurization.
  • Such internal pressurization is the source of a number of disadvantages with regard to economy of manufacture, convenience and safety. With an internal small diameter tube attached to the spigot, it is more difficult, in the capping of the filled container, to locate the tube through the opening of the container and to attach the cap. It is inconvenient and more costly to have to use some type of pressurizing pump or gas cartridge to maintain an adequate internal pressure at all times.
  • beer dispensed under such pressurization may foam exces- sively, particularly when a nearly empty bottle is fur ⁇ ther pressurized by a hand pump to dispense the last of the beer.
  • draft beer when packaged for sale directly to the consumer, must have a shelf life of some 30 to 60 days, and yet retain a sufficient content of dissolved carbon dioxide so as not to be "flat" when opened by the con- sumer.
  • permeability of the container to carbon dioxide may cause an unacceptable loss of gas from the package during normal shelf life.
  • draft beer is packaged in a pressurized container which, immediately prior to use, is depressurized by venting pressure of the container head space through a pressure release port, so that the internal pressure of the con- tainer is substantially atmospheric and the beer is dis ⁇ claimedd under the force of gravity, while providing vent ⁇ ing to forestall the creation of a blocking vacuum.
  • Draft beer is packaged in a container by filling the container with beer having a dissolved carbon dioxide volume that is between 2.6 and 3.1 times the volume of the beer. The container is pressurized during the fill ⁇ ing operation to help contain the carbon dioxide dis ⁇ solved in the beer during handling and shelf storage.
  • a spigot fixed to the container is provided with a pour spout and a vent port, with the pour spout being positioned between the container and the vent port.
  • a slidable closure barrel is mounted to move within the spigot to (a) an inner sealing position wherein the container is sealed, (b) a pressure bleed position wherein only a small pressure release port between the pour spout and the container is opened, and (c) a dispensing position in which the pour spout and vent port are both open.
  • the closure barrel is provided with different arrangements in communication with the vent port that enable air to flow into the con- tainer, but prevent outward flow of liquid through the vent port.
  • Interengaging cam means on the closure bar ⁇ rel and spigot cause the closure barrel to move axially when it is rotated, thereby providing precise control of the closure barrel position.
  • the described arrangement has a number of ad ⁇ vantages. It provides a self-contained draft beer package needing no pump or other attachable pressuriza ⁇ tion device. It also provides a low-cost draft beer filled container and the convenience and safety of sub- stantially atmospheric pressure within the container.
  • Fig. 1 is a pictorial illustration of a pair of containers embodying principles of the present invention about to be stacked one upon the other;
  • Fig. 2 illustrates the two containers in stacked position;
  • Fig. 3 is an exploded pictorial view of a spigot embodying principles of the present invention and a neck of a container to which it is to be secured;
  • Fig. 4 is a pictorial view of the spigot with the closure barrel removed from the spigot body;
  • Fig. 5 is a cross section of the spigot in closed position, with the container upright for storage;
  • Fig. 6 is a cross section of the spigot in pressure release position, with the container upright;
  • Fig. 7 is a section taken on lines 7-7 of Fig. 6;
  • Fig. 8 is a front view of the pour spout, vent port and pressure release orifice;
  • Fig. 9 is a cross section of the spigot in open dispensing position, with the container resting on its side;
  • Fig. 10 is a section taken on lines 10-10 of Fig. 9;
  • Fig. 11 is a developed view of the exterior surface of the spigot body;
  • Fig. 12 is a section taken on lines 12-12 of Fig. 11;
  • Fig. 13 is a cross section of a modified form of spigot
  • Fig. 14 is a view of the bottom of the spigot of Fig. 13;
  • Fig. 15 is an illustration of a bottle with parts broken away showing a vent tube in the bottle connected through the spigot;
  • Figs. 16, 17 and 18 are cross sections of the spigot and closure barrel in three different positions;
  • Fig. 19 is developed view of the exterior surface of the closure barrel;
  • Fig. 20 is a section taken on lines 20-20 of Figure 19;
  • Fig. 21 is a section taken on lines 21-21 of Fig. 18;
  • Fig. 22 shows the spigot with the float secured to it after assembly of the spigot to the container
  • Fig. 23 is a section taken on line 23-23 of Fig. 22 showing the float secured to the spigot;
  • Fig. 24 is a cross sectional view of the float and closure member illustrating disengagement of the float from the float retaining pin of the spigot; and Fig. 25 shows an alternative structure for tem ⁇ porarily attaching the float to the spigot and spigot base.
  • draft beer packaged in quantities that may be purchased by an individual consumer, is stored in and dispensed from a container having a volume of one to three gallons.
  • containers of such volume are described herein, it will be readily appreciated that principles of the present invention will apply to con ⁇ tainers of other sizes.
  • a container for efficiencies and economies of manufacture and han ⁇ dling, is made of a suitable plastic, such as polyethylene terephthalate (P.E.T.).
  • P.E.T. polyethylene terephthalate
  • the beer When a container filled with beer has been allowed to sit quietly for several minutes, the beer exhibits good carbon dioxide retention properties. When the con ⁇ tainer is sealed with minimal agitation, very little carbon dioxide will migrate from the beer into the head space (e.g., the space within the container above the upper surface of the beer) . A significant increase in temperature or considerable agitation is required to stimulate marked migration of carbon dioxide from the beer into the head space.
  • the barrel is filled from beer tanks at a suitable internal pressure at 30 to 32°F, with the beer having a dissolved carbon dioxide content of about 2.4 to 2.6 volumes (e.g., a volume of dissolved carbon dioxide of 2.4 to 2.6 times the volume of the beer) .
  • a suitable internal pressure at 30 to 32°F
  • Such pressure will depend upon the nature of the filling equipment and, in some cases, for example, may be about 14 pounds per square inch.
  • a plastic bottle of between about one gallon to three gal ⁇ lons or more capacity is filled with beer containing an in ⁇ creased volume of carbon dioxide, namely a volume greater than 2.6 and not more than 3.1 times the volume of beer. If the volume of dissolved carbon dioxide is too low, the beer will taste flat. If it is too high, the beer will foam excessively when dispensed.
  • a preferred lower limit is a volume at which the beer is not flat when first dispensed by the consumer, and a preferred upper limit is a volume at which there is no excessive foaming. It is presently preferred that the volume of dissolved carbon dioxide be between 2.9 and 3.0 times the volume of beer.
  • the bottle is filled using standard industry practices to obtain a driving or filling force to achieve a most economical fill.
  • Fill ⁇ ing force may vary with different types of fill equip ⁇ ment, and, for example, may be between about 14 and 15 pounds per square inch with some fill equipment.
  • Head space pressure initially is slightly less than fill pressure. This head space pressure of carbon dioxide may vary widely with turbulence and agitation ex ⁇ perienced during shipping and handling.
  • volume of dissolved carbon dioxide is selec ⁇ tively controlled by standard procedures.
  • volume of dis ⁇ solved carbon dioxide depends on head pressure and tem ⁇ perature, as set forth in standard charts.
  • head pressure and tem ⁇ perature as set forth in standard charts.
  • pressure of car ⁇ bon dioxide in the head space is raised while slowly stirring the beer.
  • the beer With this increased volume of dissolved carbon dioxide, after a loss of gas through the P.E.T. bottle during a shelf life of about thirty to sixty days, the beer will reach the consumer having a dissolved carbon dioxide content of about 2.7 times the volume of beer. Generally, a shelf life of thirty days is preferable. Therefore, if agitation is kept minimal by the consumer and the beer is maintained at a temperature of about 30 to 32°F, the beer will not be flat when initially opened and poured by the consumer after a normal shelf life. At least partly because of this increased volume of dis- solved carbon dioxide, the beer may be readily dispensed with only atmospheric pressure within the container, and, therefore, according to one aspect of the present invention, pressure in the head space of the container is released prior to dispensing.
  • draft beer with a good content of dissolved carbon dioxide
  • contents of the bottle may be partially dispensed from the P.E.T. bottle by the consumer and thereafter closed, re-sealed and stored for as much as two or three days at a temperature of about 30 to 32°F with no significant loss of palatability.
  • the remaining beer will contain a dis ⁇ solved carbon dioxide volume of about 2.5 times the volume of beer remaining.
  • the beer will retain a palatable taste and will not be flat, all without the need for any external pressure source.
  • a bottle made of plastic such as 0.015 inch thick P.E.T.
  • a bottle made of plastic is of generally right circular cylindrical shape, as indicated by bottles 10 and 12 in Figs. 1 and 2, having a decreased diameter, slightly concave or recessed bottom area 14 and an upwardly projecting, par ⁇ tially circumferential rim 16 of a size to snugly receive the bottom of a second bottle for stacking one upon the other, as illustrated in Fig. 2.
  • Each bottle is provided with an integral transverse support leg in the form of an outwardly protruding cross member 18 having a rounded outermost edge 20 of which the center (of the outer surface) extends along an imaginary line 22 that is perpendicular to the bottle axis and tangent to the exterior surface of the bottle.
  • the support edge of leg 20 thus lies in a plane tangent to the exterior surface of the bottle containing an elemental, elongated vertical area or line (in the orientation of Fig. 2) ex ⁇ tending along the edge of the bottle.
  • the bottle when the bottle is tilted to rest on its side (with its lon ⁇ gitudinal axis horizontal) with the support leg 18 horizontal and resting upon a horizontal surface, the bottle will remain in a stable horizontal dispensing position.
  • a single support leg is shown, and only one of the described configuration is neces ⁇ sary, it is contemplated that more than one such support leg may be provided, formed integrally with the bottle, and suitably spaced from one another.
  • Each bottle is formed with a neck 24 that is offset to one side, that is, to a side that is at the bottom (adjacent the support leg) when the bottle rests on its side for dispensing its contents.
  • a spigot 26 which extends upwardly (in the vertical or storage orientation of the bottle illustrated in Figs. 1 and 2) for a short distance.
  • the lower end of each bottle is formed with an offset recess 28 (on a side diametrically opposite the spigot) that receives the spigot of an adjacent lower bottle when the two are stacked in vertical position (with longitudinal axes of the bottles vertical), as illustrated in Fig. 2.
  • the recess need not be diametrically op ⁇ posite the spigot, but may be in any one of a number of other positions.
  • the bottles may be stacked three, four, or more high.
  • the neck 24 of the bottle is provided with a fixed rigid rim 29 secured and sealed thereto to which is fixed and sealed a base 30 of spigot 26.
  • Rim 29 and the spigot base 30 have a relatively large diameter.
  • Spigot base 30 is formed integrally with a hollow, circular, cylindrical spigot body 32 that is provided with a generally rectangular projecting spout section 34 (see Fig. 4) configured to form a vent port 36, a partitioned pour spout 38, and a pressure release port 41. The latter is formed in an innermost (closer to the spigot base 30) wall 39 of the pour spout.
  • the bottle when used to dispense its contents, is placed on its side so that the axis of the spigot is horizontal and the pour spout, vent passage and pressure relief channel all open downwardly.
  • spigot base 30 has a radially inner, axially-projecting circumferential flange 40 concentric with and spaced from an outer. axially-projecting circumferential flange 42, with an axially outwardly facing shoulder 44 formed on flange 42.
  • Bottle neck 24 has a radially outwardly-projecting circumferential flange 46 that abuts an inner end of spigot base flange 42 and includes an integral end sec ⁇ tion 48 received in the channel between spigot base flanges 40 and 42.
  • a circumferential, radially enlarged head 50 on the outermost end of bottle neck section 48 has an axially inwardly facing shoulder that seats on the shoulder 44 of spigot base flange 42.
  • Surfaces of the end of flange 42 and the end of bottle neck section 48 are inclined to provide a camming action that can ex ⁇ pand the annular slot between the spigot flanges 40, 42 as the head 50 enters the slot for assembly.
  • the spigot is forced down upon the bottle neck, and an interference fit of the interlocking parts is provided to seal the spigot base to the bottle neck.
  • the spigot and spigot base are made of nylon.
  • the parts are made to precise tolerances and dimensioned so that the outermost end of the bottle neck is a tight force fit into the interfitting elements of the spigot base.
  • the spigot is held in a predetermined orientation with respect to the bottle, which is positioned upright upon a conveyer, and the spigot is forcibly pressed down onto the bottle neck.
  • Spigot body 32 has an inner end section 54 extend ⁇ ing inwardly (downwardly as viewed in Fig. 5) of the spigot base 30.
  • the main section of spigot body 32 ex ⁇ tends outwardly as a straight, tubular, circular cylinder (having the generally rectangular, laterally projecting spout section 34) with a smooth inner bore.
  • the outer surface of spigot body 52- is formed with a pair of spiral, closed bottom cam slots 60 and 62 (see Figs. 4 and 11) that are identical to one another, but circumferentially spaced from each other about the outer surface of the spigot body.
  • Fig. 11 illustrates the spigot body outer surface as developed, that is, as it would look if it were unwound and laid out flat on a viewing surface.
  • the slots are identical, and thus a detailed description of one will suffice to describe both.
  • the slots have closed bottoms, that is, they do not extend through the entire thickness of the spigot body, but form elongated recesses extending only par ⁇ tially into the outer surface of the spigot body.
  • Slot 60 has a relatively short inner leg 64 of relatively small inclination (inclination to a vertical as viewed in Fig. 11) , which includes a pair of latching portions in the form of outwardly (toward the right in Fig.
  • displaced sections 66 and 68 positioned at the innermost end and at a slot bend, respectively.
  • the slot bends and assumes a greater inclination to the vertical for a second and longer straight leg 70.
  • Leg 70 extends to the outermost end of the slot.
  • the outermost end of the slot is spaced slightly inwardly of the outermost end 72 (see Fig. 12) of the spigot body, which, for a length equal to about the width of the slot, is tapered, as at 74, to allow a cam pin (to be described more particularly below) to ride over the edge of the spigot body for reception into the slot and assembly of spigot closure barrel 90 to the spigot body.
  • the inner edge of tapered surface 74 defines a shoulder that acts as a stop to prevent withdrawal of the closure barrel member, to be described below.
  • the spigot body is formed with a generally rectangular, downwardly (in the dis ⁇ pensing orientation of Fig. 9) projecting pour spout 38 having a relatively thick inner wall 39 in which is formed a pressure relief port 41.
  • This port is defined by a channel 78 opening into pour spout 38 (see Figs. 7 and 8) .
  • Channel 78 has a relatively large width for a major portion of its length, as best seen in Fig. 7, and at an end where the channel connects with the interior bore of the spigot body, its width is reduced, as indi ⁇ cated at 80.
  • This pressure relief port provides a restricted gas communication passage from the interior bore of the spigot body to the exterior of the spigot.
  • Pour spout 38 is formed with a plurality of spaced partitions 84, 86 which divide the total spout area into three smaller areas for purposes to be described below.
  • vent port 36 Outwardly of the pour spout 38, in the dispensing section 34 of the spigot, is the slightly stepped back and smaller vent port 36, of generally rectangular con ⁇ figuration, but of smaller extent in the longitudinal direction of the spigot body. Vent port 36 also provides communication between the interior of the spigot body and external atmosphere.
  • the spigot body is fitted with closure barrel mem ⁇ ber 90 having a hollow tubular barrel body 92 integrally formed with a sealing inner end portion 94 at which end portion is formed a peripheral annular groove 96 seating a resilient O-ring 98.
  • the described O-ring and groove provide simple and effective sealing arrange ⁇ ment, it is contemplated that they may be replaced by continuous circumferential ribs formed integrally on the exterior surface of the closure barrel body and having a slidable sealing fit within the spigot body bore.
  • the rib has a profile that forms a part of a circle so that the profile of the integral rib and barrel body is thus the same as the profile of barrel body and O-ring. This construction will further decrease cost of manufacture and assembly.
  • the closure barrel is movable to a selected one of three positions as follows: (a) a posi ⁇ tion in which the entire spigot bore is closed; (b) a position in which only the dispensing spout and vent port are closed (leaving the pressure relief port open) ; and (c) a position in which all of the dispensing sec ⁇ tion passages are open.
  • the exterior surface of barrel body 92 is a close rotating and sliding fit within the smooth bore of the spigot body and has fixedly connected thereto at its outer end an integral knurled barrel sleeve 104 that is concentric with the barrel body and outwardly spaced therefrom to provide an annular space between the sleeve and barrel body for reception of the spigot body 32.
  • the outer end of the hollow barrel body is closed by a disc 106 that is fixedly secured to the barrel body.
  • cam pins 110, 112 projecting radially inwardly for a distance substan- tially equal to the depth of the cam slots 60 and 62.
  • Pin 112 is positioned precisely 180° around the sleeve 104, relative to pin 110, and at the same longitudinal position with respect to the innermost end of the sleeve. Pins 110 and 112 are received in cam slots 60 and 62, respectively.
  • the barrel member 90 is assembled to the spigot body by pressing it longitudinally on the outer end of the spigot body to cause both cam pins 110, 112 to ride up over tapers 74 into the cam slots.
  • the assembled spigot arrangement is such that rotation of the closure barrel member by grasping the outwardly knurled surface of sleeve 104, causes the cam pins to move along the slots, thereby axially shifting the closure barrel member relative to the spigot bore.
  • the innermost side (lower side as viewed in Fig. 5) of the inner end 94 of the closure barrel member has an axially inwardly projecting hub 114 that terminates in a vent disc 116, which has a diameter substantially equal to or slightly less than the diameter of the spigot body bore.
  • the diameter of disc 116 is equal to the outer diameter of the barrel body 92, and both are a close sliding fit in the spigot body bore.
  • the spigot and barrel body closure barrel member being molded of low friction nylon or other plastic materials, allow ready manually-manipulatable sliding and rotary motion of the closure barrel with respect to the spigot body, while providing a sufficiently close fit to block fluid flow between the sliding surfaces.
  • Vent disc 116 is provided with a series of mutually-spaced, cir ⁇ cumferentially distributed small holes 117, 119, 121, 123, 125, each of which is less than an eighth of an inch in diameter.
  • the holes are ap ⁇ proximately one-sixteenth of an inch in diameter.
  • the bottle such as bottle 10 or 12 is force- filled at an appropriate pressure with a quantity of beer containing dissolved carbon dioxide having a volume of between 2.6 to 3.1 times the volume of beer contained therein.
  • the beer at all times during handling and shelf life, will retain this increased volume of carbon dioxide, except for loss of that portion of the dis ⁇ solved gas that migrates from the beer through the bottle wall.
  • the in ⁇ ternal pressure within the head space remains to assist in retaining the carbon dioxide in solution. This pres- sure, as previously mentioned, will vary with agitation experienced during shipping and handling. Only when the beer is ready to be dispensed is this internal pressure released and the head space pressure allowed to go down to atmospheric pressure.
  • a projecting rib 120 (Fig. 4) that circumscribes the spigot and provides a circumferential lip for hold- ing an inner edge of a shrink wrap spigot cover, shown in Fig. 3, which encompasses and seals the entire spigot and openings therein.
  • the closure barrel member is twisted in a clockwise direction, as viewed from the outer end of the spigot, to axially shift the closure barrel member to its innermost or bottle sealing position.
  • the cam pins are received in the innermost ends of slots 60 and 62, and, more specifically, in the enlarged latching portion 66 thereof.
  • the barrel To move the closure barrel from this closed sealed position, the barrel must be pressed inwardly and then rotated in a counterclockwise direction to enable the pins to ride out of the latching notches 66 at the inner ends of the cam slots.
  • the latching recesses 68 provide a kind of detent action which can be felt by the operator and which will tend to resist any further rotation of the barrel sleeve relative to the spigot.
  • the closure barrel has traveled axially from the position of Fig. 5 to that illustrated in Fig. 6. If the closure barrel should accidentally be moved past the pressure release position before internal pressure is fully released, the high internal pressure tends to force the O-ring 98 from its seal. Partitions 84, 86 of the pour spout help to retain the O-ring on its seat.
  • the sealing O-ring 98 is at a lower or innermost portion of the pour spout 38 and just outwardly of (above, as seen in Fig. 6) the inner end of the pressure release channel 41.
  • the O-ring in this position partially blocks release port 41, thereby decreasing, even further, the effective area of the small channel section 80, and providing a very small relief orifice.
  • the release port 41 is above the upper surface of beer confined in the bottle and may therefore release pressurized gas from the head space. Pressurized gas from the bottle head space can now flow through the vent apertures 117 through 125 and out through the pressure release port 41, flowing through the very small port of release channel section 80 that is not blocked by the O-ring.
  • pressurized gas at the top of the still vertical bottle is released slowly through the restricted relief port until the pressure within the container is substantially equal to atmos- pheric pressure. This may require but a few seconds. Now the container is ready for dispensing of beer.
  • Beer within the space 130 will readily flow out ⁇ wardly from the space 130 through the pressure release port when the closure barrel member is in its pressure release position of Fig. 6, or may drip from space 130 when the spigot is moved toward the dispensing position.
  • only a small amount of beer from the interior of the container, together with the pressurized gas from the head space will be forced by head space pressure outwardly through the vent holes, through the space 130, and then through the pressure release port 41.
  • the spigot may be re-closed to seal the bottle contents.
  • the bottle then is placed on its side with the transverse support leg 18 resting upon a horizontal surface, and the knurled sleeve again is rotated toward open position.
  • the barrel sleeve 104 is further rotated in a counterclockwise direction, thereby forcing the cam pins to ride out of the latching notches 68 and to ride along the more steeply inclined longer slot legs 70.
  • the closure barrel member thus moves axially along the spigot as it is rotated and attains its final or open position, as illustrated in Fig. 9.
  • cam slot legs 70 cause a greater axial motion for a given amount of rotation, and provides faster opening.
  • the O-ring 98 has moved to a point just at or outwardly of the outermost side of the vent port 36, and the vent disc 116 is now positioned just inwardly of the inner end of the vent port 36 but just outwardly of the outermost side of the dispensing or pouring spout 38.
  • the vent disc as previously men ⁇ tioned, is a close but sliding fit within the bore of the spigot body and is a close enough fit to block flow of beer past the disc along the walls of the spigot bore (after release of head space pressure) .
  • the liquid content of the bottle will flow under the force of gravity through the spigot bore, which is now at the lowermost portion of the bottle, and thence from the bore through the dispensing port 38. Because the internal pressure within the bottle has been relieved, there is substantially no pressure difference across the apertures of the vent disc, and thus surface tension of beer within the container and within the bore, but inwardly of the vent disc, will prevent flow of beer through the vent apertures. However, ambient air can flow in through the vent port, through the space 130, and thence through the several vent apertures 117, 119, etc., bubbling up through the beer to the upper surface, thereby breaking any vacuum that may tend to form within the bottle as the beer flows outwardly through the dispensing spout 38.
  • FIGs. 13 through 20 Illustrated in Figs. 13 through 20 is a container with a modified spigot enclosure.
  • the embodiment of Figs. 13 through 20 is functionally and operationally similar to that of Figs. 1 through 12, in that it will be filled substantially in the same manner as the prior embodiment is filled and under the same conditions. It also may be handled, stored, and used for dispensing just as is described in connection with the earlier em ⁇ bodiment.
  • Fig. 13 need not be placed in an upright position in order to release the pressure confined within the bottle.
  • both of the operations of pressure relief and dispensing of contents may be carried out with the bottle on its side and the pour spout facing downwardly.
  • the bottle may be reclosed in such posi ⁇ tion, where it may remain until more of its contents is to be dispensed.
  • the inner portion of the closure barrel is modified, and a vent tube is connected to the closure barrel to extend upwardly to a buoyant end of the vent tube that always remains at the upper surface of the liquid contents of the container.
  • spigot 200 of the modified embodiment includes a spigot base 202 which may be substantially identical to base 30 of the earlier em ⁇ bodiment, and connected to a bottle 10, as previously described.
  • the spigot is formed integrally with a hol ⁇ low, right circular, cylindrical spigot body 204 that is provided with a projecting spout section 206 configured to form a pour opening in the form of a spout 208 and a pressure release port 210.
  • the latter is formed in an innermost (closer to the spigot base 202) wall 212 of the pour spout 208.
  • the pour spout 208 has a truncated circular cross section, as shown in Fig.
  • vent port 214 Positioned outwardly of the pour spout 206, in substantial lon ⁇ gitudinal alignment therewith, is a circumferentially extending vent port 214 that is spaced outwardly of the pour spout 206 by an intervening wall portion 216 of the spigot body 204.
  • the vent port 214 has a lesser extent axially of the spigot than does the pour spout, although it has substantially the same circumferential extent.
  • the bottle is at all times, except perhaps during handling and storage, positioned on its side so that the spigot is at a lower part of the container, the axis of the spigot is horizontal, and the pour spout, vent port, and pressure relief port all open downwardly.
  • the spigot has a pair of diametrically opposed short cam pins 218,220, projecting radially inwardly thereof for cooperation with spiral cam slots formed in the closure barrel.
  • the pins 218,220 and the cam slots are illustrated in Fig. 19, which will be described more particularly below.
  • the spigot body is fitted with a slidable closure barrel member 230 (Figs. 16, 17 and 18) , having a hollow tubular barrel body or cylindrical section 232 that is open at an inner end 234, in fluid communication with the interior of the container, and integrally formed with a thick sealing wall 236 intermediate its length.
  • a pour opening 238 extends through the tubular wall 232 and has a truncated circular configuration congruent with the truncated cir- cular configuration of the pour spout.
  • the flat outer side of the truncated opening 238 is substantially aligned with the inner edge 240 of the sealing wall 236.
  • vent opening 244 Formed in the sealing wall 236, outwardly of the pour opening 238 and longitudinally aligned therewith, is a vent opening 244 that opens to the bottom of the spigot (when the spigot is in dispensing position) . Opening 244 connects with a chamber 246 that extends in ⁇ wardly from the opening 244 over a major portion of the cross sectional area of the sealing wall, as illustrated in Figs. 16, 17, 18 and 21.
  • a rela- tively small diameter vent tube 248 Integrally formed with sealing wall 236 and extending axially of the cylindri ⁇ cal section 232 to the open end 234 thereof is a rela- tively small diameter vent tube 248 that communicates, via a passage 250 formed in wall 236, with vent chamber 246 and vent opening 244.
  • a flexible, thin wall vent tube 252 (see also Fig. 15) is connected at one end to the free end of vent tube 248, and extends inwardly through the container to an area adjacent the upper por ⁇ tion of the container interior to enable release of pressure from the container head space prior to dispens ⁇ ing fluid and to enable venting of air into the con ⁇ tainer during dispensing.
  • a buoyant member such as a float 254, is secured to the inner end of vent tube 252 to maintain the free end of the tube in the container head space. This arrangement facilitates release of container head space pressure while the container is on its side.
  • the body of the closure barrel extends outwardly beyond sealing wall 236, to include integral outer body section 256, to an outermost end portion having a radially outwardly projecting handle 258.
  • the handle is employed to facilitate manual turning of the barrel closure member as is required for operating the dispens ⁇ ing spigot.
  • the outer end portion of the barrel closure body 256 may be formed with a plurality of apertures of suitable dimen ⁇ sions and configuration in order to decrease material and weight of the spigot.
  • the exterior surface of the barrel body 232 is a close rotating and sliding fit within the smooth bore of the spigot body and has formed therein a pair of outwardly opening spiral, closed bottom cam slots 270,272, which are il ⁇ lustrated in detail in developed form in Fig. 19.
  • the two cam slots are identical to one another, but circu - ferentially spaced from each other about the outer sur ⁇ face of the closure barrel body.
  • the slots are substan ⁇ tially similar to the slots 60,62 illustrated in Fig. 11, but are formed on the exterior of the slidable closure member in the embodiment of Figs. 13 through 21, whereas the slots of the earlier described embodiment are formed in the exterior of the spigot body.
  • Slot 270 has a relatively short inner leg 274, of relatively small inclination to the vertical, as viewed in Fig. 19, and includes a pair of latching portions in the form of notches or laterally outwardly displaced sections 276,278 positioned at an outer end and at a slot bend respectively.
  • the slot bends at the second latching section 278 and assumes a greater inclination to the vertical for a second and longer straight leg 280.
  • Leg 280 extends to the inner end of the slot, which is spaced slightly outwardly of the innermost end 282 of the closure barrel member.
  • the end of the closure barrel is tapered, as indicated at 284 (Fig.
  • This tapered end portion 282,284 also provides a stop shoulder 286 that prevents the complete withdrawal of the barrel closure member from the spigot bore. Shoulder 286 forms a limit stop that abuts the pin 218 when the barrel closure has moved to its outermost or liquid dispensing position.
  • the closure barrel member is twisted in a clockwise direction, as viewed from the outer end of the spigot, to axially shift the closure barrel member in ⁇ wardly to its innermost or bottle sealing position.
  • the cam and cam slot arrangement cause this relative axial motion in response to rotation of the closure barrel member.
  • the cam pins 218,220 are received in the outermost ends of slots 270,272 and, more specifically, in the enlarged latching portion 276 thereof.
  • the barrel may be pressed inwardly, and then rotated in a counterclockwise direction to enable the pins to ride out of the latching notches 276 at the ends of the cam slots.
  • both of the sealing O-rings 264,266 are positioned inwardly of the spout section, inwardly of both spout 208 and vent port 210.
  • the closure barrel is held in its closed position by the cam slot latching notches 276 and the internal pressure of the container.
  • the closure barrel turns and moves axially outwardly, and the cam pins ride along the lesser inclination cam slot legs, propelled axially in part by the manual rotation and in part by the internal pressure of the container.
  • This motion of the closure barrel brings the cam pins into the deeper pressure release latching notches 278.
  • the latching action of the notches 278 resists further rotation and axial motion of the barrel closure member.
  • the outward axial force of the internal pressure of the container acts only to urge the notches 278 to more firmly latch the cam pins.
  • the cam pins have reached the latching notches 278, the closure barrel member has traveled axially outwardly and has been rotated from the position of Fig. 16 to the position of Fig. 17. This is the pressure release position.
  • seal- ing O-ring 264 is still positioned significantly in ⁇ wardly of the pour spout and vent port.
  • the outer O-ring 266 is positioned at an innermost portion of the pour spout just outwardly of the inner end of wall 212 and pressure release channel 210.
  • the axial rotational shifting of the closure barrel mem ⁇ ber has moved the closure barrel vent opening 244 and chamber 246 to a position at or nearly at the axial position of the pressure release port 210.
  • the rotation of the barrel closure member has rotated the vent opening 244 until at least one edge of it is in registration or almost in registration circum- ferentially with the pressure release port.
  • the spout or pour opening 238 of the barrel closure member is sub- stantially longitudinally aligned with the vent opening 244, and both of these are circumferentially displaced from the pour spout 208.
  • the vent opening need not be aligned with the pour opening of the closure barrel as long as it is in registry with the vent port 214 in dis- pensing position and is positioned in the pressure release position so as to permit gas flow from the vent opening to the pressure release channel 210.
  • vent opening 244 longitudinally and also rotates it toward alignment with pressure release port 210, to a position wherein an edge of vent opening 244 is close to an edge of the pressure release port.
  • Precise circumferential and longitudinal alignment of vent opening 244 with release port 210 is not required, since the two sealing O-rings are on outer and inner sides of the release port 210 and vent opening 244.
  • a very small passage for air is provided from the vent opening 244 to the pressure release port 210 between the smooth interior of the spigot body and the smooth exterior of the sealing wall 236 between the two O-rings.
  • vent tube 252 gas under pressure, confined within the head space of the bottle in its horizontal dispensing position, will escape through the vent tube 252, entering the free end of the tube at the portion of the tube adjacent the float 254 and flowing through the tube, through conduit 248 of the closure barrel, and through the chamber 246, vent opening 244 and vent port 210.
  • O-ring 264 is now positioned between the vent port and the pour spout, and thus liquid being dispensed from the container through the pour spout 208 is blocked from passing between the interior of the spigot bore and the exterior of the closure barrel by the presence of the O-ring 264.
  • the truncated circular pour opening 238 is precisely regis ⁇ tered with the similarly shaped pour spout 208, and thus liquid will flow from the interior of the container through the hollow spigot, through the cylindrical por ⁇ tion of the closure barrel, and out through the pour spout of the spigot.
  • vent port 214 vent opening 244, vent tube 248 and conduit 252 to replace the volume of liquid that is dispensed.
  • the contents of the container are dispensed under the force of gravity and the spigot and its opening are positioned at the bottom of the container (which is on its side during pouring and pressure release operations, as previously described.
  • the bottle may be closed and resealed simply by rotating the closure barrel in the opposite direction to cause it to move axially inwardly past the pressure release position of Fig. 17 to the closed and sealed position of Fig. 16. If some small amount of pressure should build up within the bottle during storage, after dispensing part of its contents, the closed bottle may be depressurized again by initially moving the spigot closure barrel to its pressure relief position and letting it stay there for a few seconds before moving the closure barrel to the dispensing posi ⁇ tion.
  • the closure barrel of Figs. 13 through 21 is longer than that of the first embodiment, incorporating the in ⁇ ner cylindrical section 232. This provides increased stabilization and rigidity of interconnection between the barrel closure member and spigot, particularly in the outer dispensing position.
  • the vent tube of the closure member has its innermost end connected to a flexible tube 252, with a float, such as a small styrofoam body 254, fixed to the end of the tube, as by suitable adhesive, for example.
  • the float holds the end of the vent tube 252 at the head space of the container (e.g. above the surface of the liquid) .
  • the inner end of the tube 252 should be in the head space.
  • air may flow directly to the head space as liquid is dispensed, instead of having to bubble up through the body of the liquid, which can be undesirable.
  • the cap assembly includes the spigot base 202 (see also Figs. 13 and 14) , the spigot and the closure barrel.
  • This assembly is handled as a unit and is connected to the container 10 by firmly pressing the spigot base 202 down over the tapered shoulders 50 of the container neck.
  • it is necessary to control the position of the long, slender and flexible vent tube 252 and float 254 so that the cap assembly (including the vent tube and float) may be automatically moved into alignment with and then attached to the container neck without the vent tube hanging down or otherwise interfering with the in- terengagement of the spigot base and container neck.
  • the free end of the tube that end at which the float 254 is connected, is detachably secured to the in ⁇ ner end of the spigot, as particularly illustrated in Figs. 22, 23 and 24, and also as illustrated in dotted lines in Fig. 15.
  • the tube is bent in a loop 308 (Fig. 15) with one end permanently secured to closure member vent tube 248, and the other detachably secured to a rigid pin 300.
  • Pin 300 is fixed to the outer side of the inner end of spigot body 204 (Figs. 16, 17, 18, 22 and 24) and extends in a direction substantially paral ⁇ lel to the axis of the spigot and further inwardly of the innermost spigot end.
  • Pin 300 has an outer diameter that is a hand tight friction fit within the inner bore of vent tube 252, with the free end of the vent tube ex ⁇ tending to the free end 302 of float 254, as illustrated in Figs. 22 and 24.
  • vent tube 252 Before the cap and spigot subassembly are connected to the container neck, the free end of vent tube 252, together with the float, is temporarily mounted upon the inwardly projecting free end of fixed pin 300 of the spigot, with the body of the float adjacent the inner ⁇ most end of the spigot body 204, and approximately one- half of the end of the float 254 extending radially in ⁇ wardly of the bore of the spigot body, partially block ⁇ ing the bore.
  • the closure barrel member 230 In this intermediate assembly condition, the closure barrel member 230 is within the spigot body but is in its outer or dispensing position. This is the barrel member position illustrated in Figs. 18.
  • the cap then is pressed axially toward the container neck to interlock the in-nicgaging tapered shoulders that secure the cap as ⁇ sembly to the container neck.
  • the barrel closure member is moved to its innermost closed position.
  • the innermost end 304 of the barrel closure moves toward the free end 302 of the float.
  • the barrel closure member end then contacts the float end 302 and pushes the float, together with part of vent tube 252, off of pin 300.
  • pin 300 is such that one edge of the end of tube 252 is positioned radially inwardly of the spigot body 204, and is thus positioned to be contacted by the radially out- ermost edge of the inner end 306 of the barrel closure member.
  • the closure member will contact both the float and the end of the vent tube as it dislodges these from the retaining pin 300.
  • the float 254 and vent tube 252 are completely disengaged from pin 300 when the bar- rel closure member has attained its innermost fully closed position, as shown in Figs. 16 and 24.
  • the container preferably is filled (in upright position) while the cap and spigot assembly are detached from the container.
  • the cap and spigot assembly with the closure barrel member in its outermost open position and with the float attached to the retaining pin 300, are at ⁇ tached to the cap by means of the tapered shoulders 50, previously described.
  • the spigot is closed by moving the barrel closure member to its inner closed position in the same motion and at the same time as the cap and spigot assembly are moved to and connected to the con ⁇ tainer.
  • the closure barrel mem- ber is moved to closed position, and the vent tube and float are pushed off the holding pin, causing it to float to the top of the liquid and exposing the end of the tubing to the head space of the container.
  • a dispensing tube to flow liquid from a lowermost por- tion of the container to the pour spout.
  • the spout may have a different con ⁇ figuration (not shown) , and a dispensing tube connected to the pour spout itself extends to the bottom of the container.
  • a dispensing tube it is desirable to place a weight on the end of the dispensing tube so that the latter may at all times dispense liquid from the container bottom no matter what the level of liquid within the container.
  • automated assembly also requires that the long, flexible dispensing tube be folded and/or secured to the dispens ⁇ ing spigot during assembly of the spigot to the con ⁇ tainer.
  • a securing pin substan ⁇ tially the same as or identical to float securing pin 300 may be fixed to the cap, as at an inner end of the spigot, with the dispensing tube and weight having an aperture which frictionally receives and retains the weight and dispensing tube upon the pin during assembly of the spigot and cap to the container.
  • Suitable ar ⁇ rangements, such as those described above in connection with Figs. 22, 23 and 24 may be provided, and the inner end of the closure barrel member may be suitably con ⁇ figured and arranged to dislodge the weight and inner end of the dispensing tube from the retaining pin in a manner similar to that previously described, upon at ⁇ tachment of the cap and spigot assembly to the container body.
  • Illustrated in Fig. 25 is an alternate arrangement for detachably securing the end of vent tube 252 and float 254 to the spigot.
  • the end of the vent tube and float are secured directly to the spigot base 324 at a position closely adjacent the spigot 320.
  • a rigid retaining pin 326 is fixed to an inner side of the spigot base 324 and spaced from the radially outermost side of the spigot body 328 by a dis ⁇ tance that is slightly greater than the radius of float 254.
  • the float which is adhesively or otherwise secured to the end of vent tube 252, may have a cross section other than rectangular, if deemed necessary or desirable, in order to accommodate the inner concavely curved adjoining of the neck of bottle 10.
  • spigot base 324 is provided with an aper ⁇ ture 330, having a sealing O-ring 332, which slidably and sealingly receives the shank 334 of a plunger 336, having an enlarged head 338.
  • the inner end of the plunger shank 334 is longitudinally split, as indicated at 340, and includes a tapered edge 342 that facilitates assembly of the plunger to the spigot base 324 by inser ⁇ tion of the plunger end through the aperture 330 and O-ring 332.
  • the plunger When the float 254 is attached to the retaining pin 326, the plunger is in its outermost position, namely that illustrated in Fig. 25.
  • the float 254 of Fig. 25 may be dislodged from retaining pin 326 merely by pressing the plunger head 338 inwardly, toward the spigot base. The float, just as before, will then carry the end of vent tube 252 to the container head space.
  • each of the several spigot as ⁇ semblies disclosed herein may be used with containers of other configurations, whether or not stackable, and regardless of the nature and mode of support for the container in its dispensing position.
  • a significant ad ⁇ vantage of the container configuration disclosed herein is that even though it employs a spigot that projects outwardly of the container envelope (as is desirable for dispensing container contents) when the containers are stacked for storage, handling and transportation, the otherwise projecting spigot no longer projects from the combined envelope of a stack of containers.
  • the described containers are quite stable, when in upright storage position, or in horizontal dispensing position, and need no special external stabilizing sup ⁇ port.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Closures For Containers (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

Une cannette de distribution de boissons assure une distribution régulière de boissons gazeuses telles que de la bière. Un corps de cannette (32) est monté sur un col (24) d'un conteneur de boissons et utilise un organe de fermeture de valve en barillet (92) qui ferme hermétiquement le conteneur pressurisé à l'aide d'un joint torique (98). Le barillet est mobile via des fentes à écartement variable (60, 62) ayant une interaction avec des pointes de came (110 et 112) et un manchon (104). Lors de l'ouverture de la cannette depuis ses positions fermées, un orifice de libération de pression (41) est d'abord exposé à une libération de gaz lente dans le conteneur sans projection forcée de son contenu. Ensuite, le barillet est amené en communication avec le bec verseur (38) pour permettre la distribution de la boisson, tandis que de l'air peut entrer dans le conteneur par un évent (36) pour permettre à la boisson d'être distribuée uniformément et en douceur en évitant un vide de blocage.
EP19900902511 1989-01-18 1990-01-16 Method and apparatus for dispensing liquid Withdrawn EP0407556A4 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US29836889A 1989-01-18 1989-01-18
US298368 1989-01-18
US403189 1989-09-05
US07/403,189 US4976381A (en) 1989-01-18 1989-09-05 Method and apparatus for dispensing liquid
US07/417,328 US5118015A (en) 1989-09-05 1989-10-05 Method and apparatus for dispensing liquid
US417328 1995-04-05

Publications (2)

Publication Number Publication Date
EP0407556A1 true EP0407556A1 (fr) 1991-01-16
EP0407556A4 EP0407556A4 (en) 1991-11-13

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EP19900902511 Withdrawn EP0407556A4 (en) 1989-01-18 1990-01-16 Method and apparatus for dispensing liquid

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EP (1) EP0407556A4 (fr)
AU (1) AU620217B2 (fr)
CA (1) CA2025352A1 (fr)
WO (1) WO1990008098A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU748585B2 (en) * 1997-10-08 2002-06-06 Minnesota Mining And Manufacturing Company Gravity feed fluid dispensing valve
GB9903660D0 (en) 1998-10-16 1999-04-14 Clive John P Closure device
US6223791B1 (en) * 1999-10-21 2001-05-01 3M Innovative Properties Company Gravity feed fluid dispensing valve
WO2006038156A1 (fr) * 2004-10-01 2006-04-13 Illinois Tool Works Inc. Robinet
ES2277519B1 (es) * 2005-05-18 2008-06-01 Claudio Marcelo Fernandez Coppa Sistema de valvula integrada en envases del tipo tetrabrik, plasticos u otros.
WO2007034338A1 (fr) * 2005-09-26 2007-03-29 Illinois Tool Works Inc. Robinet
ES2430764B1 (es) * 2012-05-17 2014-09-10 Ángel María MARTÍN GARCÍA Contenedor, sistema y procedimiento para almacenar, transportar y alimentar calderas de biomasa
EP3711801B1 (fr) * 2016-07-27 2022-07-06 Aptar Radolfzell GmbH Distributeur de liquide, en particulier inhalateur
CN108379711B (zh) * 2018-04-28 2024-05-14 佘小斌 水流控制装置、冷凝水收集杯及呼吸机

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US2708058A (en) * 1950-07-14 1955-05-10 Duval Bruce Means for withdrawing liquid from a container

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US1911076A (en) * 1931-08-24 1933-05-23 Basil M Gandola Detachable spout for containers
US2405681A (en) * 1943-03-15 1946-08-13 Walter R J Woock Drum valve and faucet
US2992761A (en) * 1958-09-08 1961-07-18 Sr Edward P Sommers Vented liquid dispensing device
US3223296A (en) * 1962-06-19 1965-12-14 Waddington & Duval Ltd Liquid handling devices
GB1044517A (en) * 1962-07-25 1966-10-05 Waddington & Duval Ltd Fluid handling devices
CA1206924A (fr) * 1983-03-30 1986-07-02 Paul F. Roos Robinet
US4802610A (en) * 1987-01-05 1989-02-07 The Dow Chemical Company Pour spout

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Publication number Priority date Publication date Assignee Title
US2708058A (en) * 1950-07-14 1955-05-10 Duval Bruce Means for withdrawing liquid from a container

Non-Patent Citations (1)

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Title
See also references of WO9008098A1 *

Also Published As

Publication number Publication date
WO1990008098A1 (fr) 1990-07-26
CA2025352A1 (fr) 1990-07-19
AU620217B2 (en) 1992-02-13
AU5020390A (en) 1990-08-13
EP0407556A4 (en) 1991-11-13

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