DE1265072B - Propellant container for aerosol dispensers - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

B 05b

German class: 85 g-3

Number; 1265 072

File number: P 39369 XII / 85 g

Filing date: May 5, 1966

Opening day: March 28, 1968

The invention relates to a propellant container for aerosol dispensing devices, a valve closing off the propellant chamber and a with the movable valve body connected actuator carrying an exit ejector zone and has separate product and propellant lines leading to this, with the product line a product pipe for supplying the product from a space separate from the propellant space in Connection.

In contrast to aerosol dispensers, where the propellant and the product are in one Space are kept together, dispensing devices have separate product and propellant rooms as well as product and propellant lines that are separated from one another until shortly before the outlet have the advantage that products can also be dispensed that are no longer usable, if they are brought together with the propellant or a component added to it prior to dispensing will.

An aerosol dispensing device of the type described in the introduction is known in which the propellant container and the product container form a structural unit and closed by a common cover will. The product pipe is led out of the product container directly into the actuating member.

It is also known to provide the propellant container in the interior of the product container and with to provide an attachment that enables attachment to the product container, a valve mechanism carries and has an exit ejector zone. Here is the product pipe leading to the attachment arranged next to the propellant container. In this context, the propellant container can also be used as be designed as an independent unit, which is screwed into the attachment, with an additional device on the attachment opens the propellant container cap.

In another known dispensing device, the product container is inside the propellant container arranged and carries an attachment that firmly connects it to the propellant container. In the essay there are two valves, the hollow shafts of which in a common, the outlet ejector zone having Open actuator.

In other constructions, there are independent product containers and propellant containers next to each other arranged and are united with each other by special devices. For example be both containers inserted into a common attachment, which is in the area of the insertion point of the product propellant container

for aerosol dispensing devices

Applicant:

Precision Valve Corporation,

Yonkers, N. Y. (V.St.A.)

Representative:

Dr.-Ing. U. Knoblauch, patent attorney,

6000 Frankfurt 1, Kühhornshofweg 10

Named as inventor:

Robert Henry Abplanalp, Bronxville, N. Y .;

John Richard Focht, Yonkers, N. Y. (V. St. A.)

Claimed priority:

V. St. v. America November 2, 1965

(512 035),

dated December 3, 1965

(511537),

dated January 20, 1966 (521885)

container «an ejector outlet zone and an actuator in the area of the insertion point of the propellant container having. Instead of this, the product container itself can also have the ejector outlet zone having a head to which the propellant container can be connected from the outside. Vice versa is also an annular propellant container that can be screwed onto the mouthpiece of a product container with a head having an exit ejector zone. In the axis of the head there is a valve with an actuator. A opens into the valve transverse opening for the propellant Channel penetrating the valve stem and connected at the bottom to a product pipe.

Then it is known to pass the propellant gas through a pipe which is led through the product container, which has an outlet ejector zone at its upper end. Here, the propellant container can be below attached to the product container or inserted into it from above.

For aerosol dispensers where the product and propellant are in a container are located, it is known to attach an outlet valve to a plate closing the container at the top, whose hollow shaft with an outlet opening

809 520/207

3 4

having operating shaft is connected. At lower temperatures, the propellant has a higher temperature A pipe is attached to the valve housing, which has a higher speed up to its pressure and at the ejector Proximity to the bottom of the container is sufficient so that it is open so that a larger amount of product is sucked in N the valve, the propellant mixed with propellant or a predetermined amount of product is atomized more finely duct passes through the pipe via the valve to the outside. 5 will.

In this context, the propellant container can be a product gas space of the container is given a line via another filler as a separate unit Valve and a separate channel in the stem become one, with the option of it already The ejector is guided in the actuating element, so that everything that is necessary for the later function is countered Product through additional propellant gas io structural parts (valve, spray head, actuator, is atomized. Product pipe) that are critical in the hand of a customer Could be provided with the aerosol dispensing devices described. As a result of his independence occurs as a result of the pressure drop when opening the speed it can be used as a handpiece and with a Valve in the propellant line cooling the product container is only connected via a line Propellant on. This is especially true when it comes to being 15; but he can also work mechanically with the pro-preferred liquid propellant that is connected when the duct container is opened, for example a valve in it begins to evaporate and cool down. Which are set or placed on him, whereby also Cooling in the liquid phase leads to a permanent mechanical connection between Reduction of the evaporation of the liquid propellant is allowed in both containers. The product pipe is by means of; the cooling in the gaseous phase leads to at least the critical part of its length a pressure reduction of the gaseous phase. . protects and through the seal in the opening of the When the valve anchors the container wall a second time after a short time. So there is no bother or is operated for a longer period of time in succession, the product pipe running through the container is at hand therefore there is less propellant at the outlet nozzle and when it is introduced into a product container, steam available at lower pressure. Here- 25 It is possible to see the two places where the Treibunter If the spray behavior of the aerosol dispensing agent container suffers, it is most likely to leak, namely the device. This appearance is particularly borrowed from the valve and its upper peripheral edge, exceptionally embossed, if the propellant vapor is to be arranged before it leaves the product container. An eventritt is subjected to a further cooling, so the propellant does not leave any leakage for example by heat exchange with a pro 30 enter the product container and the product duct-propellant mixture in which the propellant has a harmful effect. For the production of the Sepamittel expands and / or evaporates. advise the propellant container, the filling devices are suitable known aerosol dispensers with lines and assembly devices for one-room separated Propellant container and product container dispensing devices are known, since the Treibleiden also include that they are structurally substantially 35 medium container in the area of the spray head only in the are more complex than the widespread aerosol details relating to the product supply Dispensing devices where the propellant must differ.

and the product located in a room that its Another feature of the invention that is based on the Production is difficult and that their application is based on the same principle of solution and is preferably possible are limited. 40 can be used together with the aforementioned feature. The object of the invention is primarily to be that in the case of the initially described reasons to improve the spray behavior of an aerosol dispensing propellant container, the propellant device which is separate from one another, that is to say with a predetermined medium and product lines through the shaft a larger amount of product run off, which connects the movable valve body with the add or a predetermined amount of product of the finer actuator.

or to continue atomizing. The solution principle is based in this shaft inevitably closely next to each other allow a heat exchange between the product and the running lines in turn Propellant before they meet at the outlet, a heat exchange between the product and ejector, the propellant separated from the propellant container through which the propellant velocity is held Product gives off heat to the propellant. 50 speed at the ejector can be increased. If apart from- and thus its cooling at least in part to the product pipe through the propellant container compensates. is performed, one can achieve that the off-To solve the task is kicked by the ejector a short time after opening the valve Set the propellant container described at the outset to approximately constant conditions, and this is characterized according to the invention as a result. that the propellant container is in itself a container, namely one for the incoming Procanner Way is independent and that the product product and one for the shaft through which the exit pipe through this propellant container at least up to ■ tende product and the escaping propellant passed to an opening in its wall and be there. Since the two separate lines internally opposite the propellant space is sealed. 60 are half of the cross-section of the shaft, the Betäti-Das the product pipe passing through the container have a very small radial dimension, allows a heat exchange between the pro-It can therefore already before the assembly of the valve duct and the propellant. Since whenever the load-bearing closure plate and before filling the Propellant valve is opened and a cooling propellant container can be put on without it with of the propellant takes place, also the product through the 65 needed for assembly or filling the product pipe is conveyed, the Ab-tools collide.

cooling at least partially compensating heat, it is particularly advantageous if a tube is

supply in the correct period of time. As a result of the hollow shaft to form more concentric

5 6

Extends product and propellant channels. Connected by the upper part. A locking plate 19 over-

Concentricity results in the greatest possible warmth form sits with its edge on the edge of the

exchange area. Furthermore, an actuating propellant container 20 open at the top, wherein the

member with the tabs 22 and 23 of the tray 19 and the container 20 for single-room dispensing devices

borrowed tools can be put on without a 5 rolled.

certain angular position must be taken into account. An attachment 50 comprises the plate 19, a valve. Another advantage results from the fact that for regulating the propellant delivery, a Ventilbetäti product pipe is connected to a valve in the supply member, an atomizer nozzle and a dip tube 8, in a known manner at one of the Propellant containers, all of which are described below,
the top plate is attached. This leads to the construction according to FIG. 1 with the external view for an additional safety function. If the according to FIG. 2, the closure of the product container pressure in the propellant container exceeds a predetermined 10 by the propellant container 20 and the limit value, the plate bulges after the closure of the propellant container through the attachment 50 and moves the valve attached to it with the plate 19.

housing axially outwards. Because the product tube in the 15 because the propellant container 20 with the attachment sealed opening is held, is either connected by the plate 19, the Aufdas Valve opened or the product tube from its set 50 and the propellant container 20 as a top Socket pulled out. In both cases, the dependent, portable unit, as shown in FIG. 3 shown the overpressure inside the container to the outside - for the delivery of a flowable product also from one blow without causing harm. ao container are used on which this portable

Various embodiments of the invention unit is not attached.

will be described in more detail below with reference to the drawings. The attachment 50 shown here has already been described

explained. It has been shown, as far as it is the actual valve unit, that

F i g. 1 shows a vertical section through an actuator, the outlet and the closure plate

dispensing device in which a propellant container is concerned; however, according to the invention, it is more novel

measured the invention in a product container one way modified to an ejector atomizer, a

is part of the product line and precautions for

F i g. 2 is a side view of the upper part of the separation of the product from the propellant.

Propellant container according to F i g. 1, until they separate the outlet ejector

F i g. 3 is a perspective view of a dispensing range. Details of this paper will now be

device in which the propellant container was only written over.

a dip tube connected to a product container. The closure plate 19 has the usual, in the is the center upstanding collar 24, which is shown in the known FIG. 4 holds a valve in an enlarged section from Weise. The collar 24 comprises a run-F i g. 1 the connection of product and drive 35 of the valve housing 30 made of plastic and presses with it middle container, its retracted upper flange 31 the outer F i g. 5 shows a vertical section through a partially an annular valve seal 32 against the Part broken away dispenser showing the upper edge of the valve housing 30. The valve propellant container only partially in the product housing 30 has a central opening 33 in the bottom, the container is inserted, 40 has an open connection with the propellant container F i g. 6 is a vertical section through another 20; this soil is also used in well-known Embodiment of a propellant container according to way as a firm seat for a biasing spring 34, the of the invention, a vertically movable valve body 35 with FIG. 7 shows a vertical section through another of its upper shoulder on the underside of the inner dispenser, in which the propellant container holds part of the valve seal 32 in 45. In a central a product container is inserted, and bore in the valve body 35 is firmly seated a hollow tube F i g. 8 a vertical section through still 36, which goes up through the hollow valve stem 37 Another embodiment of a propellant protrudes and in the valve actuator 60 (the post-container. is described standing) ends at a height which In the embodiment according to FIG. 1 includes a 50 well above the top of the outer portion of the Product container 10 is a flowable product 9, usually valve stem 37.

wise a liquid to be dispensed. In which the hollow valve stem 37 is of smaller external openness Upper part of the container 10 and the free diameter than the valve body 35 and has a Occupying space, a smaller container 20 sits just above the neck portion of even smaller diameter holds a propellant under pressure, which is either a 55 of the upper shoulder of the valve body 35, the gas or advantageously, as shown, a vaporizable water neck part of smaller diameter a larger one Liquid 21 is of high volatility, for example height (on the circle that corresponds to the diameter of the a fluorinated, chlorinated hydrocarbon as described in the valve stem) than the original commonly used for aerosol atomizers. In the thickness of the valve seal 32 has. Advantageous, but If the propellant container 60 does not necessarily exist in the shape shown, the upper part is tapered made of metal and the product container made of plastic, this neck in a known manner. The hollow Ventilz. B. polyethylene. Shank 37 has a lateral outlet 39 which goes through To put the propellant container 20 on, which goes through its wall and usually from the inner upper part of the product container 10 bent inwards, surface of a central opening in the seal closed that it will have a curved shoulder 11 and one after 65 which has a smaller diameter than that Flange 12 protruding below forms, which has with the outer neck part of the valve stem in order to achieve a complete wall of the propellant container 20, for example by sealing the lateral outlet 39. It is Clamp connection, in an area below which there is also a seal, where the upper school

ter of the valve body against the underside of the seal between the inner end wall of the fitting part 66 and is pressed. the end wall 69 of the recess 65 is formed. The effect of the valve is well known. As long as the one narrowing passage 70 with decreasing Valve stem and valve body not manually diameter towards the outlet side (in the drawing against the upward force of the spring 34 to the right) connects the cup-shaped cavity 67 with are pressed down, prevents the valve seal of the inner chamber 69. This passage 70 forms 32 an exit of the propellant to the outside through the outlet opening for the propellant, wherein the the interior of the hollow valve stem and between chamber 69 from which it is dispensed with the drive stem and seal 32. If the valve stem is connected to the central line (at the annular channel 40 in the When pressed down, the inner part of the ring seal valve stem 37) bleeds through a passage 71 32 bent down until the side outlet is manure, which in an annular chamber 41 straight 39 released in the valve stem and a flow above the end of the outer part of the valve opening between the seal 32 and the upper shaft 37, but below the end of the inner tube Shoulder of the valve body is made. Then 36 opens. The chamber 41 has a smaller one ■ Propellant flows through the lateral outlet 39 in 15 diameter than the opening 38, which the valve stem the inside of the hollow valve stem and upward in receives a shoulder for abutment of the hub the annular space 40 around the pipe 36, the 63 of which is the actuating member on the valve stem 37 Task will now be explained. form.

The ejector assembly that extends through the valve stem consists of the verengea valve body penetrating and with this moving a * the passage 70 and a hollow connecting piece 61 bran Pipe 36 forms part of the product line. inner diameter passing through this passage 70 The tube 36 goes through the central opening 33 in and protrudes somewhat over its edge and its Bottom of the valve housing 30 and forms a ver outside tapers so that it is the extension of a product pipe 8, which adapts through the tapering of the passage 70 or this Propellant container 20 approaches to the lower part of 25 and with it an annular flow product container 10 extends. The tube 8 has a small outlet or forms a nozzle for the propellant. Of the at least partially flexible. The product pipe 8 goes through the connecting piece 51 protrudes laterally over the central hub 63, a sealed opening 25 in the bottom of the propellant and its hollow inner bore 55 stands with the fluid container 20, which also has a mechanical duct through an upper chamber 56 in the hub niche connection between pipe and container. This chamber 56 is at yours represents. The gaseous lower end flowing through the ejector to an expanding cavity 57 Propellant causes a pressure reduction in the pro-open and which at its inner end has a large duct the diameter of the tube 8 and its requirements is greater than that of the chamber 56. The cavity tion 36 is formed, emerges with the success that 57 takes the upper end of the tube 36 and the product flows upwards. While the diving 35 it holds.

tube 8 conducts heat, it must of course be used for the propellant. When the gaseous propellant passes through an annular nozzle, the tube is made of a plastic which by nature is permeable to a concentric flow path for the product to be coated. When propellant and product are modified or treated in such a way that they become impermeable. 40 flow, the gas from the tapered outlet meets the valve actuator 60 and its internal parts, 70 escaping gas on the middle flow of the product belonging to the attachment, can form the shape and atomize it by creating a spray and size of a conventional aerosol -Press button from the cup-shaped cavity 67, which is used in the known atomizers. The two lines for the propellant and that, in which the product and the propellant in 45 product are housed by the lower end of the attachment 50 and are housed in a single container fed separately to the ejector. When the valve is open, the valve stem will be discharged from the opening together through the hollow valve stem, if the valve stem is pressed downwards by hand pressure on 33, the valve housing 30, the outlet 39, the large button. The surface-shaped channel 40 in the valve stem 37 of the ring 61 of the actuator is profiled so that it can receive a 50 chamber 41, the passage 71, the chamber 68 and fingertip. the ring nozzle 70 is formed. The product line comprises the actuating member 60 has a downward channel running through the center of the attachment, the protruding outer edge 62 and a downwardly essentially parallel and in this case flush center hub 63. The hub 63 has a lower axis running to the propellant line . In detail, opening 58 with a circular cross-section, which belongs to the product line with 55, the product pipe 8, the press fit of which the upper end of the valve stem receives the extension 36 the upper chamber 56 and the side and holds. A lateral, rib-like extension 64 surrounds this outlet 55 in the connecting piece 51. The central hub has openings that can only be described. The shape of the atomizer shown, which in the weseat-The outlet opening in the side wall of the actuator borrowed an equiaxed flow of the propellant supply member, can have any shape. 60 and the product on stiffness of the usually shown here is a laterally extending, cylindrical-facing cross-flow, the threshed recess 65 in the side rib 64 improves the ejector effect, enables an economical excavation of a recess in front, which allows a use of the Propellant and ensures a good, flanged fitting part 66 made of plastic - if not better atomization during spraying. takes, which has a cup-shaped cavity 67, which in 65 A propellant container 20 produced in this way can reach the fitting part to about two thirds of its depth. also used as a freely movable handpiece who-This fitting part 66 does not extend into the whole of the, as shown in FIG. 3 is shown, the not with iron depth of the recess 65, so that a chamber 68 product container is assembled. But it can

9 10

used to free a product from one but not another, and desirably up to

Disposable container 12 to be dispensed in which are simply kept separate for dispensing. The not

the product pipe 8 is immersed. load-bearing component 9 α is used in a product

F i g. 5 to 8 illustrate various containers IO kept in stock. The compatible com-

modified embodiments of the invention and certain 5 component 9 b is kept in the container 20 in stock

Additions. In these figures are the same parts as th, which also contains the propellant, and is added

in Fig. 1 denoted by the same reference numerals. Samxnen delivered with the propellant.

Additional or modified parts have new ones. In this case, side outlets 83 are in the

Digits. Side wall of the valve housing 30 provided by

In Fig. 5 the essay is the same as in io the gaseous propellants from the space above the

F i g. 1 with the difference that the central pro-liquid in the container 10 in the valve housing

duct line is formed by a single pipe. 30 and from there to the exit, if that

Rather, the product pipe 8 is open in a recess valve. A dip tube 84 extends

at the lower end of an inner bore 36 α close to the liquid level in the container 20 from

closed, the lower end of the valve housing 30 when the valve body 30, 15 is formed, the one with

35 and the shaft 37 is provided. The bore a beaded neck 85 of smaller

36 α itself forms the product line through the valve diameter to attach this immersion tube, valve body and the valve stem. Thus, the valve- In this approach there is a bell-shaped shaft 37 as a part with a hollow tube 42 in mouth 33 α under the opening 33, formed by the flow of the middle, which over the upper edge of the liquid from the container 20 into the Valve housing and outer sleeve 37 α of the shaft protrudes. The propulsion can get up through the ring 40 when the central line through the valve is again a ring the valve is open.

channel 40, which the product line as in F i g. 1 um- The dispensing device of FIG. 8 is not issued. The actuator (not shown) can be used as preferred and does not have the advantages of the leg F i g. 1 or in some other way, in order to comply with the written statements with regard to the corresponding Flow passages to the ejector and fan head section and the heat exchange in the to form the outlet opening. Shaft. But it enables the heat exchange between

In Fig. 5 is also another possible connection between the product to be dispensed and the propellant between the two containers 10 and 20 in the middle in the container 20 because the immersion tube 8 passes through shows. In this embodiment, the product container 3a has the propellant container passing through it. At this With an inclined shoulder 13 and an upright version, the product line bypasses the valve collar over the shoulder, with the housing, the valve body and the valve stem. The vertical The peripheral wall of the propellant container runs in FIG. 8 the product pipe from a 20 at a point below by means of a bore 87 in a lateral enlargement of the rolled bead 14 is applied. 35 hub 63 of the valve actuator 61 downwards

The execution according to FIG. 6 sees a delivery through an opening 25 with a sealed

the propellant instead of the product through the drill binding parts in a shoulder 86 at the top of the propellant

tion of the nozzle 51 and the delivery of the product medium container 20. It protrudes through another opening

through the annular passage 70 before. This is voltage 25 in the bottom of the propellant tank and from

a preferred shape. To the reverse delivery 40 there in the (not shown) product container,

To ensure the two materials, the Ven- A passage 88 is in the side enlargement

modified so that the propellant leads to the hub 63 from which the immersion tube receives

middle tube 36 a over the valve and the product menden bore 87 upwards and through the hub

is delivered to the annular channel 40. To 63 to nozzle 51.

For this purpose, the middle tube 36 α (at 80) in 45. The propellant line closes, as before, the height at which it is connected to the valve body opening 33 in the valve housing, the interior of the spirit, and there is a hollow bore 81 housing and the side opening 39 is provided in the hollow valve so that the side outlet 39 does not enter into a shaft. There is no central tube in the valve body opening into the annular channel 40, but continues via and valve stem, and the propellant line leads to the interior of the central tube 36 α . DAR above 50 passes through a central bore 40 in the lower valve α is the conduit for the product is the same as stem 37. The valve stem enters in advance in a bore 38; it is thus connected to the product pipe 8, in the hub 63 of the actuating member 61 and the one at the lower end of the central bore is held therein; is connected above this bore and to valve body 35. The connection her open is a smaller bore 41 a with one of the actuating member with the valve stem 37 and 55 lateral outlet (as before), which to the chamber 69 the middle tube 36 α is unchanged. leads, which feeds the propellant to the annular nozzle 70.

In Fig. 6 there is also a modified construction. The release effect is the same,

the edges 22,23 of the closure plate and the In each of these embodiments, the

Propellant container shown. In the side wall of the heat exchange between the dispensed product

upturned edge of the plate 19 is a bead 60 and the remaining propellant are enlarged,

27 rolled, and the side wall of the container 20 is if you have a greater length of the web for the

(at 28) more sharply bent to place a larger product in the rest of the propellant, for example

to provide contact area of the edge seam. wisely by turning the pipe 8 in turns in it

F i g. 7 shows one form of the dispenser as laid or otherwise more than a straight line

that of Fig. 1, but with a modification to the passage through the propellant,

lower part of the attachment 50 to also be a product

to be able to use, which has two components, product pipe goes through the propellant container and

one of which is compatible with the propellant, the purpose of which is derived from it for the purpose of arranging it in the product container

is carried out, it turns out that this is not essential. Instead, the product pipe could be attached to the sealed End opening 25. The required length of the product pipe for laying in the product container could then be attached to the sealed opening 25 and result in an extension of the product pipe in the propellant tank.

Claims (14)

Patent claims: 1. Propellant container for aerosol dispensing devices, which closes off the propellant space Valve and an actuator connected to the movable valve body carries which an outlet ejector zone and separate product and propellant lines leading to it having, with the product line, a product pipe for supplying the product communicates with a space separate from the propellant space, characterized in that that the propellant container (20) is independent in a manner known per se and that the product pipe (8) through this propellant container (20) at least up to an opening (25) in its Wall out and is sealed there against the propellant space. 2. Propellant container for aerosol dispensing devices, which closes off the propellant space Valve and one connected to the movable valve body via a high shaft Actuator carries, which has an outlet ejector zone and separate product- and propellant lines, with the product line having a product pipe for supplying of the product is in communication from a space separate from the propellant space, in particular according to claim 1, characterized in that the propellant and product lines which are separate from one another run through the shaft (37). 3. Propellant container according to claim 2, characterized in that a tube (36, 36 a, 42) extends through the hollow shaft (37) to form concentric product and propellant channels. 4. propellant container according to claim 2 or 3, characterized in that the product pipe (8) is connected to a valve which, in a known manner, is connected to a propellant container (20) above final plate (19) is attached. 5. propellant container according to one of claims 1 to 4, characterized in that the movable valve body (35) has an opening into which the product pipe (8) is inserted and which is in communication with the product channel of the shaft (37). 6. propellant container according to claim 5, characterized in that the product pipe (8) an extension (36) which has the opening of the valve body (35) and the hollow Shaft (37) penetrates, forms the product channel of the shaft and together with the shaft of the shaft Propellant channel limited (F i g. 1, 7). 7. Propellant container according to claim 5, characterized in that the movable valve body (35) has the hollow shaft (3) and a tubular extension (36 a, 42) penetrating this, which forms one channel of the shaft and together with the shaft thereof other channel limited (Fig. 5, 6). 8. propellant container according to claim 7, characterized in that the product channel between the tubular extension (36 d) and shaft (37) is formed (F i g. 6). 9. Propellant container according to one of claims 6 to 8, characterized in that the tubular extension (36, 36 a, 42) protrudes axially over the shaft (37) for receiving the actuating member (60) (F i g. 1, 5, 6, 7, 8). 10. propellant container according to one of claims 1 to 9, characterized in that the independent propellant container (20) with its peripheral wall at the upper opening of an independent Product container (10) is in direct contact (Fig. 1,5, 6, 7). 11. Propellant container according to one of claims 1 to 10, characterized in that the opening (25) for the product pipe (8) is provided in the middle of the propellant container bottom is. 12. Propellant container according to one of claims 1 to 11, characterized in that the product pipe (8) is at least partially flexible. 13. Propellant container according to one of claims 1 to 12, characterized in that the interior of a dip tube (84) arranged in the propellant container (20) at the top of the flow path the propellant from its container (2) via connecting paths (83) to the valve (32, 35) is connected, the product pipe (8) surrounds and close to the bottom of the propellant container (20) is sufficient (Fig. 7). 14. Propellant container according to one of claims 1 to 13, characterized in that at the opening (25) of the container wall ending tube (8) in the area of this opening (25) a Extension of the tube (8) is attached. Considered publications:
German Auslegeschrift No. 1100 884;
Swiss Patent No. 365 036;
French patents No. 1 360 157, 336 229.1 216 596; U.S. Patents Nos. 3,045,925, 2,973,883,
941 696, 2,888,208, 2,631,814.1 981 446, 692 721; USA.-RE Patent No. 24,555. For this purpose 2 sheets of drawings 809 520/207 3.68 © Bundesdruckerei Berlin