EP0164218B1

EP0164218B1 - Syphon assembly

Info

Publication number: EP0164218B1
Application number: EP85303227A
Authority: EP
Inventors: Richard J. Hagan; Dennis A. Lempert
Original assignee: Individual
Current assignee: Individual
Priority date: 1984-05-10
Filing date: 1985-05-07
Publication date: 1989-12-20
Also published as: DE3574864D1; EP0164218A3; ATE48827T1; EP0291788A1; BR8502217A; MX161651A; IL75101A0; IL75101A; EP0164218A2

Abstract

A drink dispensing syphon package is disclosed having a syphon head (304) configured to fit over neck (350) of a bottle (352) in sealing relationship. A lever (340) is mounted to exterior surface (360) of body (362) by breakaway filaments and a spring strip. In use, the user pulls upward on lever (340) to rupture the filaments. The strip (230) pivots an end of lever (340) through opening (342) in body (362) and through actuating rod (348). Actuating rod (348) is attached to interior surface of the body (362) by a resilient diaphragm. The invention relates to apparatus for and a process of filling such a container which uses a permanent syphon filling head for cooperation with a valve in the necked opening of the container when the container is supported in a pivotable cradle. A source of liquid under pressure for supply to the container is connected to the filling head as is means for removing gas from within the container.

Description

Background of the Invention

This invention relates to the storage and dispensing of water or flavored beverages under gas pressure of between 90 and 150 psi (10 atmospheres). Such products are commonly known as syphon seltzer water, as distinguished from present day bottled sparkling waters or lightly carbonated flavored beverages which are charged to pressures of 5p to 60 psi (3 to 4 atmospheres). Forfurther purposes of comparison, champagne is under about 6 to 7 atmospheres of pressure. This invention further relates to a simplified syphon assembly for use to dispense liquids stored in a container under pressure and to a package incorporating the syphon assembly. This invention also relates to an improved closure especially configured for fabrication in a single molding step. More particularly, it relates to such a closure that is tamper-resistant priorto actuation by an end user. In another aspect this invention relates to a modified form of a seltzer bottle filling apparatus and to a process for filling a seltzer bottle having a detachable head with the head detached. More particularly, it relates to such an apparatus and process in which such a seltzer bottle is filled through a valve mechanism that remains on the bottle.
Although the syphon seltzer water industry was a giant at the turn of the century and reached its zenith in the 1920s, today it is remembered mostly by the classic syphon seltzer bottle which was used as a comedy prop by the Marx Brothers and The Three Stooges to squirt each other in wild water fights. The New York area alone at one time had 2,000 syphon seltzer companies. Today, there are about a dozen seltzer bottlers in the United States. There are only two syphon seltzer·bottlers west of Chicago.
The syphon seltzer industry died after World War II and remains as a nostalgic, marginally profitable local business carried on by only a handful of energetic young folk who hand fill and hand deliver the old-fashioned syphon seltzer water to a fiercely loyal group of purists who want nothing more and nothing less than thrice-filtered water and carbon dioxide. There are no salts; no flavours; no preservatives, a trio that is sweet music to the palates of the health conscious.
Syphon seltzer water, up until now, however, because of the use of high pressures in glass bottles was a victim of several factors; (1) the high cost of products liability insurance; a heavy glass bottle exploding under a pressure of 150 psi can inflict awesome damage; (2) the high cost of heavy glass bottle manufacture; (3) the high cost of tin, rubber and brass used in the manufacture of the pewter heads and valves; (4) repair and maintenance of bottles and crates; (5) theft of bottles; (6) the high cost of bottle delivery and pick-up of the heavy, fragile bottles; (7) the high cost and difficulty in sanitising the returned bottles, and especially the returned heads and valves; and ultimately (8) the switch by the mass market to lightly carbonated flavoured drinks in disposable cans and thin bottles. The syphon seltzer water industry died, not for a good product, but for the variety of reasons set forth above which related to its storage, distribution and dispensing problems.
A brief background, therefore, of the seltzer industry and the syphon seltzer container is necessary to an understanding of the dramatic change this invention brings to an industry which has essentially stood still for the last sixty years.
Mineral waters with light natural carbonation were enjoyed by earliest man; the Romans knew about them but used the water more for bathing than drinking, witness Bath. The Germans and the French considered the mineral waters to have curative powers and they live today in such industries as Vichy, and Perrier. Of course, the mineral waters from the early spas could not be transported very far, because heat and lack of pressurized vessels took its toll on the taste and effervescent quality of the water. In 1772, a British scientist, Joseph Priestly, better known for his discovery of oxygen, succeeded in producing artificially carbonated water. He made it in barrels and the race for a container was on. The British Navy mixed the carbonated water with lime juice and later the practice was adopted through the Royal Navy to prevent the sailors from getting scurvy from their vitamin-deficient diet; hence the term "Limeys". Nicholas Paul of Geneva is credited with starting to manufacture imitation spa waters in bulk in 1789 and one of his partners, Jacob Schweppe, four years later started making soda water.
The manufacture of carbonated water in the United States began in the early part of the 19th Century. A patent was granted in 1810 for saturating water with "fixed air".

Invention of the Syphon Bottle

Charles Plinth is credited as being the first to preserve "aerated waters" in a reservoir which would deliver a portion of its contents at different times. His patent on a Regency portable fountain in 1813 was identical in construction with the fountains then commonly used in which the motive force was compressed atmospheric air. Plinth substituted carbonic acid gas for air in his apparatus. It consisted of a vessel with a tube passing from an opening in the top almost to the bottom; the upper part of the tube was furnished with a stop-cock and delivery tube, from which the water was drawn off under pressure of the carbonic acid gas.
Deleuze and Dutillet, paris jewellers, who apparently were adverse to consuming an entire bottle of champagne at one sitting were granted a patent in 1829 on a "siphon champenois" which consisted of a hollow corkscrew which was passed through the cork into the bottle. The upper part of the screw terminated in a vertical tube bearing a nearly horizontal spout. A lever operated a valve, which when opened and the bottle was tipped, gave exit to the champagne under pressure of the contained gas.
The forerunner of the present day syphon seltzer bottle was patented in 1837 by Antoine Perpigna of Paris, France. The vase was made of metal, glass, china or stoneware and the head of the syphon was hollow and contained a piston, pressed down by a spring into close contact with the upper end of the tube passing to the bottom of the vase. The method of attaching these early head mechanisms to the bottle or vessel is unknown to applicant but it appears from the articles that there was some sort of external collar mechanism, or perhaps the head mechanism which protruded above the bottle was adhesively affixed to the bottle.
The split collar mechanism which was universally adopted and is still in use today was invented in about 1855 by the Comte de Fon- tainemoreau and George Rogers. They used a bottle made with a groove around the outer wall of the neck into which was fitted a ring of metal divided into two segments which formed a shoulder for securing a screwed collar.
The problem with the Rogers mechanism and virtually every mechanism for syphon seltzer water to the present day is the fact that the head mechanism, containing the valve and spout, must be assembled on the bottle before filling. The bottle is filled through the head mechanism and the entire assembly of head and filled water bottle must be transported from the factory, through the distribution chain, to the customer and then after the contents are emptied, the bottle and head must be returned through the distribution chain, back to the factory for filling. After sanitizing, the bottle is refilled through the head. Again, the seltzer industry as it was known for one hundred years, died because of the lack of a container system, not because any superior product replaced it.
In the conventional technique for filling seltzer bottles, the head - bottle combination is inverted in a cradle, a nozzle is connected to the spout of the head, the lever of the head is depressed to open the valve disposed in the head, and the seltzer water enters the bottle through the head and the syphon tube. A sequence of fill and sniff operations is carried out by the filling apparatus in order to remove air displaced by the seltzer water as the bottle fills. In order to fill the recyclable or disposable packages disclosed in the related applications, modification of this prior art apparatus and process is required.

Summary of the Invention

The present invention recognizes and fulfills the one basic commercial fact of our day; a beverage product must meet all of the requirements for distribution and sale through our present day supermarket system. These requirements are

(1) Safety; the container must not explode even if mishandled.
(2) Inexpensive; the bottle and valve must be so inexpensive that they need not be returned and routed back through the chain of distribution to the factory.
(3) The bottle and valve must be light weight; water is already a heavy product and the container cannot add appreciably to the weight or containers of sufficient volume cannot be handled through the checkout stand and be bagged along with other grocery products.
(4) The bottle must be made of a material that can be recycled in those states which have instituted laws for the recycling of containers.
(5) The head mechanism must be simple, yet easily attached and detached from the container so that most everyone can accomplish the process without any danger or effort.

The key to the accomplishment of the above objectives is the separation of the head and valve actuation function from the valve and seal function and the selection of a high strength, non-frangible container. Specifically, the valve and seal mechanism are contained almost totally within the neck of the container, while the head, which contains the valve actuator, is a separate member which can be retained by the consumer and used over and over again. The container may be charged up to 150 psi. To emphasize the high capacity of the container, it is to be noted that 150 psi is the bursting pressure of standard glass bottles used for lightly carbonated beverages.
A container system for storing and dispensing a pressurised fluid is shown in US-A-2,185,290 which provides the basis for the prior art portion of claim 1. As compared therewith, the present invention, which is characterised in claim 1, provides a removable closure cap which economically and efficiently uses the same thread as is used to retain the head following removal of the closure cap and which also provides a closure function as a precaution additional to the pressure retention provided by the valve. The valve means is adherently retained, as by welding, in the interior of the neck portion to provide a reliable seal without interfering with proper operation of the closure cap or head when threaded to the exterior of the neck portion. The danger of glass breaking under high pressure is avoided by having the container of substantially non-frangible plastics material. In the preferred embodiment the invention is as characterised in claim 2 and provides the dispenser with a removable and replaceable head which is suitable for economical production and for continual reuse in the home or bar, a simple and reliable diaphragm arrangement separating the manual operating mechanism from the liquid dispensing path.
In practice, the container is filled with carbonated water to a pressure from about 90 to 150 psi. A standard aluminium screw type cap or other simple closure is placed on the bottle. The cap is under no pressure and merely serves to protect the valve from contamination and accidental discharge if the valve should break away from the neck. The container is distributed through the standard distribution channels like any other bottled or canned beverage, without any special precautions and shelved in a supermarket along with the standard lightly carbonated flavoured beverages, which are under the greatly reduced pressure of about 50 to 60 psi. The container is distributed and shelved without the head and spigot mechanism. The head and spigot may be sold separately or distributed free of charge with the sale of one or more containers. The customer refrigerates the container of seltzer water and, before using, removes the disposable cap and attaches the head mechanism to the container. The high pressure is sufficient to discharge the entire contents of the container without appreciable loss of carbonation due to the use of the syphon tube. When the entire contents of the container have been discharged, the head may be detached and placed on a freshly refrigerated container of seltzer water. The used syphon seltzer non-frangible container may be discarded or recycled by returning it to a recycling centre as desired.
When the head is tightly attached to the container, should the valve leak, the head will hold the pressure. In the unlikely event that the valve should break away from the neck of the container, the head would safely hold the damaged valve within the head.
Unlike standard syphon seltzer bottles which may be accidentally discharged while being carried by simply pressing down on the lever on the head mechanism, the present containers cannot be accidentally discharged. The head is never placed on the container until it is ready for use. The only way to discharge the container of the present invention while it is in the distribution chain is to remove the protective cap, throw it away, and then poke a small long, sharp object down through a small hole in the valve which is down inside the neck of the container. Note that the cap may be provided with a tamper proof lower skirt.
In one embodiment of the invention, the syphon assembly has a tube dimensioned to extend from the necked container opening into the liquid in the container. The valve positioned proximate to the necked opening end of the tube has a frustoconical shaped resilient sealing member having an open base engaging the tube and a top normally biased by the resilient sealing member into sealing engagement with a passageway of the valve for the liquid to flow from the container through the necked opening. The actuating member is actuable to apply force to deform the resilient sealing member to move its top out of the sealing engagement with the passageway of the valve. The resilient sealing member has a plurality of apertures spaced around the top to allow the liquid to pass from the tube to the passageway of the valve when the resilient sealing member is deformed.
The actuating member preferably incorporates, in integrated form, a rod extending downward within the body for engaging the valve when the body is attached to the necked opening, a resilient diaphragm extending substantially normal to the rod, and a ring portion surrounding the resilient diaphragm for attaching the actuating member to the body.
In a preferred embodiment of the invention, the syphon assembly incorporates both the resilient sealing member and the actuating member. In this structure, the syphon head body and actuating member may be separated from the valve without releasing pressure in the container. The container holding the liquid under pressure, with the closed valve in place, and a conventional closure provided over the necked opening, are distributed separately from the syphon head with the actuating member, which are attached to the package for dispensing pressurised beverage or other liquid.
In the preferred embodiments the head includes a lever for operative engagement of the valve actuating means which is integrally formed with the head and is attached to an exterior surface of the head by at least one break away member. The head has a first opening for insertion of one end of the lever operatively to engage the valve actuating means. The lever is configured so that its other end extends through the head opening for application of actuating force in a given direction by a user when the first lever end operatively engages the valve actuating means.
In a preferred form of the invention, the lever is further permanently attached to the exterior surface of the head by a resilient biasing member, which is configured to apply biasing force in opposition to the actuating force in the given direction. The resilient biasing member is preferably further configured to pivot the lever end into operative engagement with the valve actuating means when the break away member is broken away. The valve actuating means also preferably comprises an upwardly extending rod having a first end with a transversely extending opening configured to receive the one end of the lever. The rod has a second, valve sealing end. The rod is attached to an interior surface of the head by a resilient diaphragm, and the resilient diaphragm is configured to apply biasing force to the rod in opposition to the actuating force. The rod and diaphragm may be integrally formed with the head. In this form, the container closure of the invention is formed as one piece, including the lever attached to the exterior surface of the head, and the resilient diaphragm and rod assembly attached to the interior surface of the head.
The invention should be more readily apparent to those skilled in the art, after review of the following more detailed description of the invention, taken together with the drawings, in which:

Figure 1 is a perspective view of the container of the present invention with the valve inserted and the cap and head removed.
Figure 2 is a cross sectional view of the container of Figure 1 shown in an enlarged scale with the midsection of the container removed. Portions of the valve mechanism are not shown in section for purposes of clarity in showing their relationship with the rest of the mechanism. The preferred valve and plug apparatus is shown. One of the forms of the syphon tube is shown.
Figure 3 is a cross section of a portion of the container on an enlarged scale with the cap removed and a head member attached to the form of the valve shown in Figure 2.
Figure 4 is an exploded perspective view of the head, valve and a portion of the syphon tube shown in Figures 1-3.
Figure 5 is an enlarged side view of the container of the present invention with a portion in cross section.

The bottle is attached to a base for convenience in standing in a vertical position. This view shows the shape of the bottle prior to filling.

Figure 6 is a side view of the container of Figure 5 with portions in cross section. The container is shown filled with carbonated water and is under pressure of between 90 to 150 psi. The valve and disposable cap are shown on the sealed and filled container.
Figure 7 is a cross-section view of another syphon head assembly and package incorporating the assembly in accordance with the invention.
Figure 8 is an exploded perspective view of the syphon head assembly shown in Figure 7.
Figure 9 is a cross-section view of a portion of the package shown in Figures 7 and 8.
Figure 10 is a cross-section view similar to Figure 1, but showing the package of Figures 7-9 in use.
Figure 11 is an external perspective view of still another syphon head and package which, while not using the threaded cap and head required by the present invention, shows an alternative construction of the head.
Figure 12 is a cross section view taken along the line 4-4 in Figure 11.
Figure 13 is a cross-section view of the syphon head and package shown in Figures 11 and 12 during activation.
Figure 14 is a cross-section view of the syphon head and package shown in Figures 11 and 12-13 after activation.
Figure 15 is a cross-section view of the syphon head and package shown in Figures 11-14 during use.
Figure 16 is an exploded perspective and partial section view of a further syphon head and package embodiment in accordance with the invention.
Figure 17 is a cross-section view of a completed package incorporating the syphon head of Figure 16.

Turning now to the drawings, more particularly to Figure 1, the method of the present invention for storing and dispensing fluids containered under gas pressure comprises selecting a plastic, metal, composite or other substantially non-frangible container 1 capable of safely withstanding in excess of three atmospheres of pressure and preferably a 1.8 liter bottle capable of safely carrying liquids at 150 psi (10 atmospheres). The container is formed with a neck portion 2 having an external attachment member 3. Preferably, the bottle is an 18 to 20 mil polyester terephthalate (PET) bottle. Polyester terephthalate (PET) is furnished by various manufacturers, including Eastman Chemical Products, Inc. One of the manufacturers of the bottle is Plaxicon Company in the City of Industry, California using equipment and molds manufactured by NISI ASB Machine Company, Ltd. of Japan, with offices in Torrance, California. The unusually high strength is due to the bi-axial orientation of the molecules in the plastic. Additional information on bottle manufacture is set forth in "A Layman's Guide to Pet Chemistry and Processing", Edward E. Dennison, Eastman Chemical Products Inc. and "One-Stage Processing of Pet Bottles", Eastman Kodak Company. The external attachment member on the outside wall of the neck may be the formation of screw threads 3 in the plastic.
A valve means 4 is selected which is mounted substantially within the container neck portion for maintaining gas pressure of at least three atmospheres and preferably up to about 150 psi or about 10 atmospheres. A tube 5, commonly known as a syphon tube, is connected to the valve and has a distal end 6 which extends to a point adjacent to the bottom 7. The fluid flows up through the hollow syphon tube and through the valve when opened. The container is filled with liquid 8, such as carbonated water pressurized to about 10 atmospheres.
A cap member 9 for removably covering the opening in the neck portion of the bottle is selected, which is removed prior to placing the head on the bottle and dispensing the fluid. The cap preferably is of light weight aluminum formed with internal threads, tamper proof and recyclable or disposable. The cap should have a thin flexible seal member 54 (Figure 2) for preventing the inside of the bottle and valve from becoming contaminated in the distribution system. The cap is not under pressure, unlike all caps for lightly carbonated beverages.
The last step in the method is to select a head member 10, which is removably affixed to the external attachment member on the neck portion of the container. A preferred means of attachment is by internal threads 11 formed on the inside of wall 12 of the head member. The head member has a manually engageable valve actuating member, such as a lever 13. A remote valve actuating member, such as a pin 14, is selectively operable by the valve actuating member and is positioned for engagement with the valve means. A substantially impermeable liquid and gas sealing means, such as a rubber membrane 15, separates the manually engageable valve actuating member 13 and the remote valve actuating member 14. The head is formed with a chamber 16 which receives the fluid and channels it to a channel 17 in spout 18.
In Figures 2, 3, and 4, a safety neck plug member 19 is shown which encloses the valve means and is integrally connected to the syphon tube 5. The neck plug member is preferably attached to the inside wall 20 of the container by an adhesive. A suitable adhesive is General Electric RTV Silicone Adhesive. Another method of attaching wall 49 of neck plug 19 is to use a solvent to soften the PET and weld the plug to the neck wall of the container. Spin welding may also be employed.
Continuing to refer to Figures 2, 3, and 4, the valve means includes an inner chamber 21 formed in neck plug member 19 having upper and lower portions 22 and 23. A valve seat 24 is formed in the upper portion of the valve chamber. This may simply be an annular protrusion. A valve cup 25 is positioned for registration with the valve seat in a valve closed position and is movable to a valve open position away from the valve seat. Sealing means, such as a rubber washer 26, is positioned within the cup for sealing registration with the valve seat in the valve closed position. A spring retainer member 27 is mounted in the lower portion 23 of the chamber 21 and flared portion 101 of the syphon tube and a spring member 28 is mounted in the spring retainer member and biases the valve cup to the valve closed position.
The manually operable means for selectively opening the valve for release of the contents of the container may be any member capable of depressing the valve cup 25. A suitable head member 10 is illustrated in Figures 3 and 4 for actuating the valve. A guide member 29 having threads 99 is.threadably inserted into an opening 30 formed in the head to engage head internal threads 31. Pin 14 is mounted for vertical reciprocation within opening 32 of the guide member. Lever 13 is formed with a protrusion 33 which bears on cup 34. Injection molded plastic washer 35 bears against annular protrusion 36 which surrounds cup 34. The lever pivots about end point 100.
Assembly and operation of the valve and head illustrated in Figures 2-4 is as follows. A syphon tube 5 is selected having a length which will reach to a point adjacent the bottom of the container. Since the container is plastic and will expand with increased pressure from increased temperature and shrink with the loss of pressure, it is advisable to select an end member 37 which is frictionally placed over the distal end 6 in a telescoping manner so that if the bottom of the bottle pushes up against flared end 38, the end member 37 will simply slip over the distal end 6. Note that openings 39 formed in the end member 37 permit liquid to flow into the syphon tube even though the end member is pressed tightly against the bottom wall of the bottle. Syphon tube 5 is formed with an outwardly extending flange 40. An annular rib 41 registers with a matching groove 42 in the plug member 19. Spring retainer 27 snap fits into the bottom of plug 19 and is inserted into enlarged opening 43. Spring 28 is then placed in the spring retainer so that its bottom end rests on abutment 45 and the top portion encircles protrusion 46 on valve cup 25. Rubber washer 26 is placed in valve cup 25, which in turn is placed on the spring 28. Note that washer 26 may be formed with a small opening 47 to retain the end 48 of pin 14. Safety neck plug member 19 is then adhered to flange 40 of the syphon tube thereby compressing spring 28 and forcing sealing washer 26 into sealing engagement with valve seat 24 formed in the plug member. The entire plug and syphon tube assembly is then placed into the container and the side wall 49 is adhered to the inner neck wall of the container by a suitable adhesive or by spin welding.
Filling of the container with carbonated water is as follows. A suitable filling apparatus depresses valve cup 25 and the liquid enters through opening 50 in plug member 19 and into inner chamber 21. The water is forced past openings 51 and 52 and into syphon tube 5. The water flows through end member 37 and then into the bottle. When the container is filled to the desired amount, the valve cup is released and spring 28 forces the cup and washer 26 into sealing engagement with valve seat 24. Pressure in the container also tends to force washer 26 into sealing engagement. A cap 9 is then threaded onto the container to prevent contamination of the end surface 53 and opening 50 of the plug. The cap member may be provided with a flexible sealing member 54 to further enhance the seal to prevent contamination. As previously noted, the cap is not under any pressure since the container pressure is entirely held by the sealing washer 26 within the safety plug.
Another important feature is the fact that the entire valve means and plug member is within the neck of the bottle except for a thin flange 55 which may rest on the upper rim 56 of the bottle. Flange 55 mechanically prevents the plug from slipping inside the bottle when the plug is first assembled and adhered to the inside wall of the neck of the container. It may also serve to provide an abutment when the cap is screwed onto the bottle.
The container is shipped through the distribution chain with the cap on and without any head mechanism. The container is shelved in supermarkets and other retail stores, where it is purchased directly by the ultimate consumer and carried to a home or business place. The container is chilled in the refrigerator and, when ready for consumption, the cap 9 is removed from the bottle and the head member 10 is screwed onto the container. The guide member 29 mates with conical surface 53, which is a rigid non- compressible sealing surface, at its matching concave surface 58. Pin 14 is inserted through opening 50 in the plug member and opening 47 in washer 26. Preferably there is a detent 59 into which the end 48 of pin 14 is inserted. All of the above operations are carried out without releasing any prssure from the container. Note that there are no compressible parts. All of the parts have a fixed length for accurate mass assembly of the valve and safety plug. In order to withdraw a part or all of the contents of the container, it is simply necessary to depress lever 13 inserted through opening 102 in the head 10, which causes protrusion 33 to move downwardly against cup 34, which in turn presses downwardly on the head 60 of pin 14 through sealing membrane member 15. Depression of lever 13 causes pin 14 to move downwardly and end 48 to depress valve cup 25, carrying washer 26 with it. Spring 28 is compressed against abutment 45 in the spring retainer 27. Gas pressure within the container forces the carbonated water up through syphon tube 5, through openings 52 and 51 in the spring retainer and into inner chamber 21. The liquid is forced between seal 26 and the valve seat 24 up past the flutes 61 in pin 14 and into chamber 16 in the head. Drain opening 62 permits the liquid under pressure to be propelled through channel 98 in guide member 29 and through channel 17 in the spout 18. As soon as the lever 13 is released, spring 28 forces valve cup 25 to move upwardly . and to seal washer 26 against valve seat 24. Pin 14 is forced upwardly and causes lever 13 to return to its raised position. Thus, the container remains charged with sufficient gas to completely empty the container whenever desired at a later time. There is no escape of gases while the lever is in the raised position, since the gas remains in the upper portion of the container and continues to act on the surface 63 of the water, rather than on the seal between washer 26 and seat 24.
It is standard practice in industry to provide a plastic base member for plastic bottles. The drawings illustrate such a standard base as indicated by the number 103. The base is attached to the bottle by applying adhesive at areas 94 and 95. By applying the adhesive to the base of the bottle and an upper part of the base, the base will remain affixed to the bottle in spite of the expansion and contraction of the bottle which results from the varying pressure in the bottle, as affected by varying temperature and varying fill levels of the bottle. The difference in shape of the bottle is shown in Figure 5 when the bottle is empty and in Figure 6, which shows the shape of the bottle when it is filled and pressurized. Note particularly the indentation along line 96 in Figure 5 at a point just above the top edge 97 of the base 103. In Figure 6, when the bottle is filled, indent 96 disappears and becomes a smooth curved line. Some vertical growth occurs in the bottle, but it is not as dramatic as the diameter expansion. The difference in vertical height is, however, of sufficient importance that is necessary to make provision for this dimensional change as has been described above in the various syphon tube end members and the provision for openings in the edge of the end member.
It is not intended that cap 9 be subject to pressure at any time. If, however the valve should leak, and build-up pressure, danger from the cap may be obviated by providing a plurality of vertical slots in the outer sidewall of the neck of the bottle which cross threads 3. Thus, when the cap is loosened, if there should accidently happen to be any pressure against the cap, the pressure would safely vent through the vertical slots to atmosphere, the instant the cap seal was broken. The vertical slot system is presently found on plastic bottles which are under light carbonation.
Figure 7 shows a syphon assembly 110 and a seltzer water package 112 incorporating the syphon assembly 110, in accordance with the invention. The package 112 includes a high strength polyester terephthalate (PET) bottle 114 of the type described in the above referenced application, having a wall thickness of from about 18 to 20 thousandths of an inch. The bottle 114 has a necked opening 116 with exterior threads 118. The syphon assembly 110 includes an insert assembly 120 (see also Figure 2), bonded to the inside wall 122 of the necked opening 116 and extending into the bottle 114. A head assembly 124 (see also Figure 2) is attached to the necked opening by means of threads 126 on body 128, which mate with the threads 118 on the necked opening 116. When assembled in this manner, the head assembly 124 engages the insert assembly 120 during use of the seltzer water package 112.
The insert assembly 120 includes a tube 130 which extends from the necked opening 116 into the seltzer water 132 in bottle 114 and to bottom 134 of the bottle. Openings 136 are provided at end 138 of the tube 130 to allow the seltzer water 132 to enter the tube 130.
The tube 130 has a flanged upper end 140 within the necked opening 116. A resilient, substantially frustoconical shaped valve sealing member 142 rests on end 140 of the tube 130. Insert 144 fits over the valve sealing member 142 and is bonded to edge 146 of the tube end 140. The tube end 140 and insert 144 are both bonded in sealing engagement to the interior surface 122 of necked opening 116. Valve sealing member 142 has a raised portion 148, which normally seals centrally disposed passageway 150, which extends through the insert 144. A cruciform cross-section valve guide 152 extends upward from the raised portion 148 into the passageway 150. Openings 154 are provided around the raised portion 148 through the valve sealing member 142.
Figure 9 shows the necked portion 116 of the bottle 114 and the insert assembly as the packaged seltzer water 132 is sold. A conventional aluminum twist-off cap 156 is fastened over the necked opening 116 by means of the screw threads 118. Pressure from the seltzer water 132 in bottle 114 is not applied to the cap 156 because passageway 150 is sealed by the raised portion 148 of the valve sealing member 142.
In use of the package 112, the purchaser removes the cap 156 and replaces it with the syphon head assembly 124, as shown in Figures 7 and 8. The package 112 is then ready to dispense the seltzer water 132.
The head assembly 124 includes a one-piece actuator 160, consisting of an actuating rod 162, a diaphragm 164 and a ring 166 for bonding the actuator 160 to body 128 of the head assembly 124. Bend 168 in the resilient diaphragm 164 provides spring tension in the diaphragm. Actuating rod 162 extends above the diaphragm 164 and has a curved end 170, which engages curved surface 172 of lever 174. Lever 174 extends through aperture 176 in body 128 and is pivotally connected to the body 128 at 178, on the opposite side of the body 128 from aperture 176. Actuating rod 162 has a cruciform cross-section portion 180 which extends downward from the diaphragm 164 to engage the cruciform cross-section projection 152 of the valve sealing member 142 within passageway 150. Ring 166 of the actuator 160 has an orifice 182 extending through the ring 166, to connect cavity 184, defined by the actuator 160 and the insert 144, to bore 186 within spigot 188.
Figure 10 shows the syphon assembly 110 in its open position, to discharge seltzer water 132 through spigot 188. As shown, when the lever 174 is depressed, actuating rod 162 is pushed downward, exerting force on the valve sealing member 142, deforming it away from sealing engagement with passageway 150. The seltzer water flows through apertures 154, passageway 150, cavity 184, and orifice 182 to spigot 188. When lever 174 is released, spring force from diaphragm 164 moves actuating rod 162 and lever 174 upwards, back to the position shown in Figure 7, allowing valve sealing member 142 to assume its normal position sealing passageway 150.
In practice, tube 130, valve sealing member 142, insert 144, activator 160, head body 128 and lever 174 are preferably separately fabricated from a suitable plastic material in a molding operation. For this purpose, an injection molded co-polyester plastic is preferably employed. The valve sealing member 142 is placed on flanged end 140 of the tube 130, and insert 144 is then bonded to rim 146 of the end 140, such as by spin welding. The completed insert may then be placed into bottle 114through necked opening 116. The insert assembly 120 is then bonded at insert 144 in sealing engagement to the interior wall 122 of the necked opening 116, such as by spin welding or with a suitable adhesive. Similarly, the actuator 160 is bonded at ring 166 to head body 128, such as by spin welding.
Turning now to Figures 11 and 12, there is shown another syphon head closure 210. The head 210 includes a body 212 with tapered flanges 214 for attachment to both inside surface 213 and outside surface 215 of neck 217 of plastic bottle 219 by spin or ultrasonic welding. A spigot 216 incorporates a passageway 218 through the body 212, communicating with interior surface 220 of the body 212. An actuating lever 222 is attached to exterior surface 224 of the body 212 by first and second break away filaments 226 and 228 and by a thicker, resilient biasing ribbon 230. A top 232 is attached to the body 212 by flexible hinge 234. The top 232 is configured to fit flange 236 of the body 212 in a snap fit. An upwardly extending actuating rod 238 is centrally disposed within body 212, and is attached to interior surface 220 of the body 212 by a resilient, flexible diaphragm 240. The diaphragm 240 divides the head 212 into an upper chamber 242 and a lower chamber 244. Actuating rod 338 has an cavity 246 extending into the rod 238 and dimensioned to receive end 248 of the lever 222.
In practice, all of the parts of the head closure 210 are preferable fabricated together from a suitable plastic material in a single molding step. For this purpose, an injection molded co-polyester plastic is preferably employed. The body 212, lever 222, cap 232 and spigot 216 are formed by a one piece mold cavity, with separate cores from above into upper chamber 242, from below into lower chamber 244 and from the side to form the rod 238, flexible diaphragm 240 and the passageway 218. A slider within the core used to form spigot 216 forms the passageway 218.
Prior to attachment of the body 212 to a container, the syphon tube 216 is attached to the inside surface 220 of the body 212, by spin or ultrasonic welding the flange 258 in place. Tip 257 of rod 238 engages opening 259 of tube 256 in a sealing fit when tube 256 is in place. After the syphon tube 256 is attached in the body 212, the top 232 is snapped into position in flange 236, as shown in Figure 12. Figure 12 shows closure 210 in place on neck 217 of a plastic bottle 219, permanently attached by welding. Flange 274 extending around the neck of the bottle 217 provides support for the body 212 against lateral shearing forces, such as might occur if the bottle 219 were dropped. The bottle 219 is filled with highly carbonated water 276 through spigot 216, as is conventional in seltzer bottling, by inserting a suitable member through opening 278 in body 212 to engage rod 238 to apply force for moving end 257 or the rod away from opening 259, thus opening the valve assembly and allowing the highly carbonated water 276 to flow into the bottle 219. This procedure is explained more fully below in connection with Figures 18-22. When so filled, the bottle 219 is stored, shipped and sold in the form shown in Figure 12. Since lever 222 must be inserted through opening 278 to engage the rod 238 to discharge the highly carbonated water 276 from the bottle 219, the presence of intact break away filaments 226 and 228 on the package assures the user that the package 211 has not been tampered with prior to sale. If desired, a removable label or other sealing strip may also be placed over the opening 278 during storage and shipment of the package 211.
Figure 13 shows the syphon head closure 210 during the process of activating the syphon head closure for dispensing the seltzer 276 from bottle 219 by insertion of the lever 222 through opening 278. The user pulls upward on the lever handle 280, first rupturing the filament 226. Spring strip 230 guides the lever 222 with continued upward force on the handle 280, so that end 248 of the lever 222 enters the opening 278. The second break away filament 228 breaks during this travel. The spring strip 230 is configured so that it will guide the end 248 into cavity 246 in rod 238 to give the configuration shown in Figure 14. Nipples 281 on either side of the lever 222 engage inside surface 220 of the upper chamber 242 to keep the lever 222 in place once it has been inserted through opening 278. Edge 283 of opening 278 serves as a fulcrum for raising rod 238 when downward force is applied to handle 280.
Figure 15 shows the syphon head closure 210 actuated by a user. Downward force on the handle 280 of the lever 222 is converted to upward force on the rod 238 by fulcrum edge 283, thus moving tip 257 out of sealing engagement with opening -259 in the syphon tube 256. The seltzer water 276 is then discharged by the carbon dioxide pressure in bottle 219 through opening 259 into lower chamber 244 and out passageway 218 of spigot 216. When the user releases the downward force on handle 280 of lever 222, the downward biasing force of diaphragm 240 on rod 238 returns the head closure 210 to the position shown in Figure 14, with tip 257 sealing the opening 259. If desired, a compressed spring can be inserted between end 285 of rod 238 and top 232, and top 232 bonded in place, to provide additional downward biasing force on rod 238. When the bottle 219 is empty, it and the head closure 210 are recycled or discarded.
Figures 16 and 17 show another embodiment of a package 300 in accordance with the invention. This package 300 includes an insert assembly 302, which is inserted in the neck 350 of a bottle 352, and a head closure 304, which is screwed by threads 306 onto mating threads on the neck of the bottle. With this embodiment, the bottle 352 containing the seltzer water 356 is sold with the insert assembly 302 in place in the neck of the bottle and a conventional aluminum twist off or plastic snap on cap fastened over the neck of the bottle. The end user replaces the cap with the head closure 304.
The insert assembly 302 includes a tube 310 which extends from the neck 350 of the bottle into the seltzer water 356 and to the bottom of the bottle 352. Openings 312 areprovided at end 314 of the tube 310 to allow the seltzer water to enter the tube 310. The tube 310 has a flanged upper end 316 within the neck of the bottle. A resilient, substantially frustoconical shaped valve sealing member 318 rests on end 316 of the tube 310. Insert 320 fits over the valve sealing member 318 and is bonded to edge 322 of the tube end 316. The tube end 316 and insert 320 are both bonded in sealing engagement to interior surface 358 of the bottle neck. Valve sealing member 318 has a raised portion 324, which normally seals centrally disposed passageway 326, which extends through the insert 320. A cruciform cross section valve guide 328 extends upward from the raised portion 324 into the passageway 326. Openings 330 are provided around the raised portion 324 through the valve sealing member 318.
As in the Figures 11-15 embodiment, the head 304 has a lever 340, mounted on exterior surface 360 of head body 362. To activate the head 304, lever 340 is extended through an opening 342 to engage a vertically disposed actuating rod 344. Cruciform cross section end 346 of the rod 344 is configured to engage the valve guide 328.
The head 304 is provided separately from the seltzer water package 300 including the insert assembly 302 and a conventional aluminum twist off or plastic snap on cap. After replacing the cap with the head 304, the user separates lever 340 from body 362 of the head 304 in the same manner as in the Figures 11-15 embodiment, to insert the lever 340 through opening 342, aperture 348 extending transversely through rod 344 and into socket 364. When the seltzer package is empty, the user may remove the head 304 for use with another seltzer package. Other than as shown and described above, the construction and operation of the Figures 12-13 embodiment is the same as the Figures 11-15 embodiment.

Claims

1. A container apparatus for storing and dispensing a carbonated beverage comprising; a container (1) capable of safely withstanding in excess of three atmospheres of pressure, said container having a longitudinal axis and being integrally formed with a neck portion (2) having an internal annular wall (20); a normally closed valve means (4) sealingly mounted to the container neck portion and received substantially within said container neck portion for maintaining gas pressure of at least three atmospheres and having a passage (50) formed therein adapted for receiving a valve actuating member; a syphon tube (5) mounted within said container, said syphon tube having a distal end (6) adjacent the bottom of said container and an end (40) operatively connected to said valve means (4); a removable head member (10) provided with a discharge spout (18); an integrally formed thread (3) at said neck portion; the removable head member (10) having a thread (11) integral with said head to attach said removable head at said neck portion over said opening in said container to dispense the carbonated beverage from the container, and a manually operable means (13, 33) in said head for temporarily opening said normally closed valve by actuation of a valve actuating member (14) for dispensing carbonated beverage from said container; and a removable closure (9) for covering the normally closed valve means (4) in the absence of the removable head member (10), characterised in that the internal wall (20) of the neck portion has a substantial surface area generally parallel to said longitudinal axis; the removable closure comprises a threaded cap (9) directly engageable with the unit integral thread (3), the thread (11) of the removable head member is matingly engageable directly with the integral thread (3) of said neck portion upon removal of the threaded cap therefrom, the normally closed valve means is sealingly adhered to the internal wall (20) of the neck portion and in that said container is a substantially non-frangible container of plastics material.

2. A container apparatus as claimed in claim 1, characterised in that said head member (10) has a housing forming an open ended chamber (30) and comprises the valve actuating member (14), and a liquid and gas substantially impermeable resilient means (15) forms a sealed top of said open ended chamber and separates said manually operable means (13, 33) from said valve actuating member (14), said sealed top resilient separating means (15) being free to move so that downward motion of said manually operable means is transmitted to said remote valve actuating member, said valve actuating member extending below said sealed top resilient separating means to open said valve in response to the downward motion of said manually operable means.

3. A container apparatus as claimed in claim 2, characterised in that said actuating member comprises, in integral form, a rod (162, 18) extending into said guide member opening, and a resilient diaphragm (164) comprising the resilient sealing means and extending substantially normal to said rod, said resilient -diaphragm being attached around the periphery to said head member housing by means of a wall (166) surrounding said resilient diaphragm.

4. A container apparatus as claimed in claim 3, characterised in that said manually operable means comprises a lever (174) extending through an opening (176) in said head member housing and pivotally mounted against an interior surface (178) spaced from the opening, an upper end of said actuating member rod (162) and said lever (174) being connected between the pivotal mounting and the opening by mating curved surfaces (170, 172).

5. A container apparatus as claimed in claim 3 or 4, characterised in that said wall (166) of said actuating member has an orifice (182) extending from beneath said resilient diaphragm (168) through said wall and said head member housing has a spigot (186) in mating relationship with the orifice in said wall.

6. A container apparatus as claimed in claim 3, characterised in that the manually operable means comprises a lever (340) permanently attached to the exterior surface of said head member by a resilient biasing member (230) which applies a biasing force in opposition to the actuating force in the given direction.

7. A container apparatus as claimed in claim 6, characterised in that said resilient biasing member (230) is adapted to pivot an end (248) of the lever end through an opening (278) in the housing into operative engagement with said valve actuating member (238) when a breakaway member (228) initially connecting the lever with the head member is broken away.

8. A container apparatus as claimed in claim 3, characterised in that said valve actuating member comprises an upwardly extending rod (344) having a first end to receive a lever (340) comprising the manually operable means and a second valve actuating end, said rod being attached between the first and second ends to said wall by said resilient diaphragm which applies biasing force to said rod in opposition to the actuating force.

9. A container apparatus as claimed in claim 8, characterised in that said rod (344) and diaphragm are integrally formed with said housing, a portion of said housing comprising the wall.

10. A container apparatus as claimed in claim 8 or 9, characterised in that the lever is received in a transversely extending opening in said rod which is comprised by a recess in the rod, the lever end engaging in said recess.

11. A container apparatus according to claim 8 or 9, characterised in that a transversely extending opening (348) in said rod extends through said rod, one end of the lever passing through said rod to be pivotally attached to the interior surface (364) of said housing.

12. A container apparatus according to any preceding claim, characterised in that a tube end member (37) has one flared end portion (38) formed with notched openings (39) therein and an opposite telescoping end dimensioned for a tight sliding fit with the distal end (6) of said syphon tube (5).

13. A container apparatus according to any preceding claim, characterised by a safety neck plug member (19) comprising said internal annular wall and integrally connected to said elongated syphon tube (5).

14. A container apparatus according to any preceding claim, characterised in that said valve means (4) comprises an inner chamber (21) having upper and lower portions open at both ends and a valve seat (24) formed in said upper portion of said chamber, a valve cup (25) positioned to engage with said valve seat in a valve closed position and movable to a valve open position away from said valve seat, sealing means (26) carried by said cup for sealing engagement with said valve seat in said valve closed position, a spring retainer member (27) connected to said lower portion of said chamber, and a spring member (28) carried by said spring retainer member and biasing said valve cup to said valve closed position.

15. A container apparatus as claimed in claims 13 and 14 taken in conjunction, characterised in that said safety neck plug member has a top wall (58) formed with a convex shape and an opening substantially at an upper part of said top wall, and said head member is provided with a guide member (29) formed with an opening for receiving said remote valve actuating member (14) therethrough, said guide member being formed with a concave surface surrounding said guide member opening formed for sealing engagement with said convex shaped top wall of said safety neck plug member.

16. A container apparatus as claimed in any preceding claim, characterised in that said valve means comprises a valve provided in an insert (144) to which the syphon tube (130) is fixedly attached, the valve being provided with a resilient, substantially frustoconical sealing member (148) having an open base contacting the insert end of the tube, a top biased into a sealing engagement with a passageway (150) extending upward within said insert, and a plurality of apertures (154) for passage of liquid from the tube (130) through said sealing member (148) for flow through said passageway when said top is moved from sealing engagement with the passageway.

17. A container apparatus according to any one of claims 1 to 15, characterised in that the end of the syphon tube (130) operatively connected with the valve means is flanged (at 140), and the valve means comprises a plastic insert (144) extending in sealed engagement along the internal annular wall of the neck portion to engage a periphery of the flange (140) of said syphon tube end, said insert having a centrally disposed passageway (184) positioned above said syphon tube end and leading out of the neck portion, and a deformable, resilient plastic sealing member (148) resting on the flange (140) and having a top in sealing engagement with the centrally disposed passageway of said insert, the top of said resilient sealing member being movable out of sealing engagement with the centrally disposed passageway of said insert in response to downward force applied through the centrally disposed passageway, whereby pressurised liquid can pass from said flanged syphon tube end through the said centrally disposed passageway when the top of said sealing member is out of sealing engagement with said centrally disposed passageway.